CN211296339U - Integral iron core mounting structure - Google Patents
Integral iron core mounting structure Download PDFInfo
- Publication number
- CN211296339U CN211296339U CN201921677425.0U CN201921677425U CN211296339U CN 211296339 U CN211296339 U CN 211296339U CN 201921677425 U CN201921677425 U CN 201921677425U CN 211296339 U CN211296339 U CN 211296339U
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- iron core
- mounting
- injection molding
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Abstract
The utility model discloses an integral iron core mounting structure, include: an iron core and an iron core injection molding; the iron core injection molding piece is provided with two mounting bulges used for mounting the iron core injection molding piece to the motor shell and an injection molding body used for injection molding and mounting the iron core; two ends of the mounting bulge respectively extend to two ends which protrude out of the injection molding body; one end of the mounting bulge is provided with a jack for positioning and mounting the iron core injection molding piece; the jack is provided with an arc-shaped positioning surface; one end of the mounting bulge is also provided with a positioning end face; the other end of the mounting bulge is provided with a fixing hole; a wire placing groove is formed on the outer side surface of the mounting protrusion; one end of the injection molding body is provided with two guide parts; the guide part is provided with a guide inclined plane; needle guiding openings for guiding needles to move are arranged between the two guiding parts and the other ends of the two mounting bulges respectively. The integral iron core mounting structure is high in mounting precision and good in structural stability.
Description
Technical Field
The utility model relates to an integral iron core mounting structure.
Background
The traditional iron core injection molding part is formed by splicing two parts, two plastic parts are respectively injected and then combined with two split-charging iron cores to be assembled into a complete iron core injection molding part. Working of plastics and iron core are accomplished through assembling, and the installation clearance between the interior circle of iron core and the axiality of rotor and motor shaft and iron core and rotor is difficult to guarantee. Such a structure is complicated in installation process and poor in structural stability.
SUMMERY OF THE UTILITY MODEL
The utility model provides an integral iron core mounting structure adopts following technical scheme:
a monolithic core mounting structure comprising: the iron core injection molding part is used for installing the iron core; the iron core and the iron core injection molding piece form a whole through injection molding; the iron core injection molding piece is provided with two mounting bulges used for mounting the iron core injection molding piece to the motor shell and an injection molding body used for injection molding and mounting the iron core; two ends of the mounting bulge respectively extend to two ends which protrude out of the injection molding body; one end of the mounting bulge is provided with a jack for positioning and mounting the iron core injection molding piece; the jack is provided with an arc-shaped positioning surface for positioning the radial position of the iron core injection molding piece; a positioning end face used for positioning the axial position of the iron core injection molding piece is formed at one end of the mounting protrusion; the other end of the mounting bulge is provided with a fixing hole for fixing the guide pin; a wire placing groove for containing the bridge wire of the coil winding is formed on the outer side surface of the mounting protrusion; one end of the injection molding body is provided with two guide parts for guiding the threading to realize threading; the guide part is provided with a guide inclined plane for guiding the threading to realize threading; a needle guiding port for guiding the needle to move is arranged between the two guiding parts and the other ends of the two mounting bulges respectively; the iron core includes: the coil winding device comprises a plurality of winding parts for winding coils, a plurality of tooth parts for limiting the coils and a connecting body for connecting the tooth parts; one side of the plurality of winding parts is connected with the connecting body; the plurality of tooth parts are arranged on one side of the winding part far away from the connecting body; both ends of the tooth portion respectively extend to both ends protruding from the winding portion.
Further, the distance from the plane where the end face of one end of the mounting protrusion is located to the plane where the end face of one end of the tooth portion is located is greater than or equal to 2mm and less than or equal to 4 mm.
Further, the distance from the plane where the end face of the other end of the mounting protrusion is located to the plane where the end face of the other end of the tooth portion is located is greater than or equal to 3mm and smaller than or equal to 7 mm.
Further, the distance from the plane where the end face of one end of the tooth part is located to the plane where the end face of one end of the winding part is located is greater than or equal to 1.5mm and smaller than or equal to 3.5 mm.
Further, the distance from the plane where the end face of the other end of the tooth part is located to the plane where the end face of the other end of the winding part is located is greater than or equal to 1.5mm and smaller than or equal to 3 mm.
Further, the two mounting projections are oppositely arranged.
Further, the insertion hole is formed by partially recessing the positioning end surface.
Furthermore, the iron core injection molding piece is also provided with a ventilation groove for enabling the interior of the iron core to form wind pressure so as to radiate the interior of the iron core; the ventilation groove is arranged between the injection molding body and the mounting bulge; the width of the ventilation groove in the circumferential direction of the iron core injection molding piece is more than or equal to 1mm and less than or equal to 2 mm; the height of the ventilation slot in the extending direction thereof is equal to the height of the core in the extending direction thereof.
The utility model discloses an useful part lies in that the integral iron core mounting structure's that provides installation accuracy is higher, and structural stability is higher. Accomodate the gap bridge wire and can avoid the gap bridge wire protrusion and lead to the problem appearance of broken string in putting the wire casing. The efficiency of coil winding can be improved through guide portion and needle guide mouth.
Drawings
Fig. 1 is a schematic view of an iron core of the present invention;
FIG. 2 is a schematic view of the injection molding of the iron core of the present invention mounted to an iron core injection molding;
FIG. 3 is a schematic view of another angle of injection molding of the core of FIG. 2 mounted to the core injection molded part;
FIG. 4 is a bottom view of the injection molding of the core of FIG. 2 mounted to a core injection molded part;
FIG. 5 is a top view of the injection molding of the core of FIG. 2 mounted to a core injection molded part;
fig. 6 is a schematic view of a motor casing according to the present invention;
FIG. 7 is a schematic view of another angle of the motor casing of FIG. 6;
fig. 8 is a schematic view of the magnetic steel of the present invention.
The iron core 10, the winding portion 11, the connection body 12, the tooth portion 13, the installation convex portion 121, the installation locating surface 122, the iron core injection molding 20, the installation convex portion 21, the jack 211, the arc locating surface 212, the locating end surface 213, the fixing hole 214, the wire placing groove 215, the injection molding body 22, the guide portion 221, the guide inclined surface 222, the pin guiding opening 223, the ventilation groove 224, the motor casing 30, the locating groove 301, the concave portion 302, the heat dissipation rib 303, the mounting table 31, the plug pin 311, the first arc locating surface 312, the glue injection groove 313, the guide vane 32, the magnetic steel 40, and the glue groove 41.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 8, for the specific structure of the present invention, the drawings include: iron core 10, iron core injection molding 20, motor casing 30, magnet steel 40 and motor shaft. The core 10 and the core injection molded part 20 are formed as a single body by injection molding. The core injection molded part 20 is fixedly mounted to the motor case 30. The magnetic steel 40 is rotatably connected with the motor casing 30. The motor shaft is fixedly connected with the magnetic steel 40 to output driving force. The assembly of the core 10 and the core injection molded part 20 may be referred to as a stator. The magnetic steel 40 may be referred to as a rotor.
The iron core 10 includes: a plurality of winding parts 11 and a connecting body 12. The plurality of winding portions 11 are used to wind a coil. The connecting body 12 is used to connect the plurality of winding portions 11. Specifically, the connecting body 12 encloses a non-closed loop. The plurality of winding portions 11 are provided in a space surrounded by the connection body 12. One side of the winding part 11 is connected with a connecting body 12. The other side of the winding portion 11 away from the connection body 12 is formed with a tooth portion 13. The teeth 13 serve to limit the coil position to ensure stability of the coil mounting position. The end faces of the ends of the plurality of tooth parts 13 far away from the connecting body 12 are all located in the same cylindrical surface, so that gaps between the tooth parts 13 and the magnetic steel 40 are uniform. The area of the end face of one end of the tooth portion 13 is larger than the cross-sectional area of the tooth portion 13. The connecting body 12 is formed with a mounting boss 121. A mounting positioning surface 122 is formed on one side of the mounting boss 121 in the space surrounded by the connecting body 12. The mounting positioning surface 122 is used for quickly positioning the mounting core 10.
Specifically, the core 10 is an integral motor core 10, and the mounting accuracy in mounting is high, so that the coaxiality of the core 10 with a motor shaft and the mounting gap with a rotor can be ensured.
In a preferred embodiment, the number of the winding portions 11 is greater than 2 and equal to or less than 8. This ensures that the motor has a suitable drive power in different requirements. Specifically, the number of the winding portions 11 is even.
As a specific configuration, the number of the winding portions 11 is 4.
Further, the 4 winding portions 11 are evenly distributed along the circumferential direction of the non-closed ring shape around the connecting body 12.
Further, one of the 4 winding portions 11 is located at one end of the connection body 12. The other of the 4 winding portions 11 is located at the other end of the connecting body 12. Two of the 4 winding portions 11 are symmetrical with the other two of the four winding portions 11 with respect to the mounting positioning surface 122.
The ratio of the length of the end face of one end of the tooth portion 13 in the circumferential direction of the cylindrical surface on which the end face of one end of the tooth portion 13 is located to the circumferential length of the cylindrical surface is 0.1 or more and 0.15 or less. The arrangement can ensure that a certain wind pressure exists between the iron core 10 and the magnetic steel 40, thereby improving the heat dissipation effect.
Specifically, the value of the ratio of the length of the end face of one end of the tooth portion 13 in the circumferential direction of the cylindrical surface on which the end face of one end of the tooth portion 13 is located to the circumferential length of the cylindrical surface is equal to 0.125.
The core injection-molded part 20 is formed with two mounting protrusions 21 and an injection-molded body 22. The mounting protrusion 21 is used to mount the core injection molded part 20 to the motor case 30. The injection-molded body 22 is used for injection-molding the iron core 10. The both ends of installation arch 21 extend to the both ends of protrusion in the body 22 of moulding plastics respectively to keep certain distance between the both ends of messenger's iron core 10 and the motor casing 30, thereby guarantee to keep certain electric distance between the tip of coil after the coil wire winding and the motor casing 30.
Specifically, one end of the mounting projection 21 is formed with an insertion hole 211. The insertion holes 211 are used for positioning and installing the core injection molding piece 20. The insertion hole 211 is formed with an arc-shaped positioning surface 212. The arcuate locating surface 212 may be used to locate the radial position of the core injection molded part 20 when the core injection molded part 20 is installed. One end of the mounting projection 21 is also formed with a positioning end surface 213. The positioning end surface 213 is used to position the axial position of the core injection molded part 20 when the core injection molded part 20 is mounted. The other end of the mounting projection 21 is formed with a fixing hole 214. The fixing hole 214 is used for fixing the guide pin. The outer side surface of the mounting protrusion 21 is formed with a wire-placing groove 215. The routing slots 215 are used to accommodate the bridge money of the coil windings. One end of the injection-molded body 22 is provided with two guide portions 221. The guide part 221 is used to guide the wire to enable threading, i.e., coil winding. The guide part 221 is formed with a guide slope 222. Guide ramps 222 are used to guide the wire through the threading. A needle port 223 is provided between the two guide portions 221 and the other ends of the two mounting projections 21, respectively. The needle port 223 is used for guiding the needle. Both ends of the tooth portion 13 of the core 10 extend to protrude from both ends of the winding portion 11, respectively. This makes it possible to limit the height of the package formed by the coil winding, thereby positioning the end position of the package.
Specifically, the problem that the gap bridge wire is protruded to cause wire breakage can be avoided by accommodating the gap bridge wire in the wire accommodating groove 215. The efficiency of winding the coil can be improved by the guide part 221 and the needle guide port 223. The integral iron core 10 installation structure formed by the iron core injection molding part 20 and the iron core 10 is high in installation precision and structural stability.
In a preferred embodiment, the distance from the plane where the end face of one end of the mounting projection 21 is located to the plane where the end face of one end of the tooth portion 13 is located is 2mm or more and 4mm or less.
In a preferred embodiment, the distance from the plane where the end face of the other end of the mounting projection 21 is located to the plane where the end face of the other end of the tooth portion 13 is located is 3mm or more and 7mm or less.
In a preferred embodiment, the distance from the plane of the end face of one end of the tooth portion 13 to the plane of the end face of one end of the winding portion 11 is 1.5mm or more and 3.5mm or less.
In a preferred embodiment, the distance from the plane of the end face of the other end of the tooth portion 13 to the plane of the end face of the other end of the winding portion 11 is 1.5mm or more and 3.5mm or less.
As a specific embodiment, two mounting protrusions 21 are oppositely arranged to ensure the mounting symmetry of the structure, thereby ensuring the structural stability.
As a specific embodiment, the insertion hole 211 is formed by partially recessing the positioning end surface 213.
In one embodiment, the core injection molded part 20 is further provided with ventilation slots 224. The ventilation groove 224 serves to make wind pressure inside the core 10 to dissipate heat inside the core 10. Specifically, the vent groove 224 is provided between the injection-molded body 22 and the mounting projection 21; the width of the ventilation groove 224 in the circumferential direction of the core injection molded part 20 is greater than or equal to 1mm and less than or equal to 2 mm; the height of the ventilation slots 224 in the extending direction thereof is equal to the height of the iron core 10 in the extending direction thereof.
A mounting table 31 is provided in the motor case 30. The mounting table 31 is used for positioning and mounting the core injection molded part 20. The mount 31 is formed with two latches 311. The latch 311 is formed with a first arcuate locating surface 312. The first arcuate locating surface 312 is adapted to engage the arcuate locating surface 212 to locate the radial position of the core injection molded part 20. A plurality of positioning grooves 301 are formed at the outer side of the motor case 30. Constant head tank 301 is used for fixing a position the installation fast in order to install the motor fast to suitable position and drive output mechanical energy, has improved production efficiency. One end of the motor case 30 is formed with two recesses 302. The recess 302 is used to facilitate the user's installation of the core injection molded part 20. Specifically, the two recesses 302 are recessed downward to form an operation space. The user can conveniently install the core injection molding 20 through the operation space. The two recesses 302 are oppositely disposed. The plane of the end face of one end of the motor casing 30 coincides with the plane of the end face of one end of the iron core injection molding 20. The air pressure between the motor shell 30 and the iron core injection molding part 20 can be increased by the arrangement, so that the heat dissipation performance of the motor is improved.
Preferably, the depth value of the insertion hole 211 in the extending direction thereof is 9mm or more and 11mm or less. The length of the latch 311 in the extending direction is 1mm or more and 2mm or less. This arrangement ensures the stability of the installation of the core injection molded part 20.
Specifically, the depth value of the insertion hole 211 in the extending direction thereof is 10 mm.
Preferably, the extending direction of the positioning groove 301 is parallel to the central axis of the motor case 30. The number of the positioning grooves 301 is 1 or more and 4 or less. This arrangement can ensure the stability of the mounting structure of the motor case 30.
Specifically, the number of the positioning grooves 301 is 2.
In a preferred embodiment, a plurality of heat dissipating ribs 303 are further formed on the outer side of the motor casing 30. The heat dissipation ribs 303 are used to improve heat dissipation efficiency. Specifically, the extending direction of the heat dissipating ribs 303 is parallel to the extending direction of the latch 311.
In a preferred embodiment, the motor housing 30 is further formed with a plurality of guide vanes 32. The guide vanes 32 serve to guide air to be discharged from the inside of the motor case 30. Specifically, the guide vanes 32 are connected to the mounting platform 31 and uniformly distributed on the periphery of the mounting platform 31.
In a preferred embodiment, a glue injection groove 313 is formed on one side of the latch 311 away from the first arc-shaped positioning surface 312. The glue groove 313 is used for filling glue to fix the core injection molded part 20. This arrangement can further ensure the stability of the mounting structure of the core injection molded part 20. Specifically, the extending direction of the glue injection groove 313 is parallel to the extending direction of the plug pin 311.
The magnetic steel 40 is fixedly mounted to the outer periphery of the motor shaft. A plurality of glue grooves 41 are formed on the inner wall surface of the magnetic steel 40. The glue groove 41 is used for filling glue to fix the relative position of the magnetic steel 40 and the motor shaft, and the stability of the mounting structure between the magnetic steel 40 and the motor shaft is ensured. The inner diameter of the magnetic steel 40 is larger than the outer diameter of the motor shaft, and the difference between the inner diameter value of the magnetic steel 40 and the outer diameter value of the motor shaft is less than or equal to 0.01 mm. The arrangement ensures that the gap between the magnetic steel 40 and the motor shaft is moderate in size, so that the magnetic steel 40 is not stressed in the installation process, and the magnetic steel 40 is prevented from being damaged due to the brittle characteristic. Meanwhile, the coaxiality of installation between the magnetic steel 40 and the motor shaft is guaranteed due to the arrangement, and the installation precision of the motor is effectively improved.
As a specific embodiment, the number of glue grooves 41 is 4. 4 glue groove 41 can guarantee the stability of the mounting structure of magnet steel 40 and motor shaft.
Further, 4 glue grooves 41 are uniformly distributed on the inner periphery of the magnetic steel 40, and the extending direction of the glue grooves 41 is parallel to the central axis of the magnetic steel 40.
In a preferred embodiment, the depth of the glue groove 41 is 0.05mm or more and 0.1mm or less.
In particular, the depth of the glue groove 41 is equal to 0.8 mm.
In a preferred embodiment, the width of the glue groove 41 is 0.3mm or more and 0.5mm or less.
In particular, the width of the glue groove 41 is equal to 0.4 mm.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (8)
1. An integral core mounting structure, comprising: the iron core injection molding part is used for installing the iron core; the iron core and the iron core injection molding piece form a whole through injection molding; the iron core injection molding piece is provided with two mounting bulges used for mounting the iron core injection molding piece to a motor shell and an injection molding body used for injection molding and mounting the iron core; two ends of the mounting bulge respectively extend to two ends protruding out of the injection molding body; one end of the mounting protrusion is provided with a jack for positioning and mounting the iron core injection molding piece; the jack is provided with an arc-shaped positioning surface for positioning the radial position of the iron core injection molding piece; a positioning end face used for positioning the axial position of the iron core injection molding piece is further formed at one end of the mounting protrusion; the other end of the mounting bulge is provided with a fixing hole for fixing a guide pin; a wire placing groove for containing the bridge wire of the coil winding is formed on the outer side surface of the mounting protrusion; one end of the injection molding body is provided with two guide parts for guiding the threading to realize threading; the guide part is provided with a guide inclined plane for guiding the threading to realize threading; a needle guiding port for guiding a needle to move is arranged between the two guiding parts and the other ends of the two mounting bulges respectively; the iron core includes: the coil winding device comprises a plurality of winding parts for winding coils, a plurality of tooth parts for limiting the coils and a connecting body for connecting the tooth parts; one side of the winding parts is connected with the connecting body; the plurality of tooth parts are arranged on one side of the winding part far away from the connecting body; both ends of the tooth portion respectively extend to both ends protruding from the winding portion.
2. The monolithic core mounting structure according to claim 1,
the distance between the plane where the end face of one end of the mounting protrusion is located and the plane where the end face of one end of the tooth portion is located is larger than or equal to 2mm and smaller than or equal to 4 mm.
3. The monolithic core mounting structure according to claim 2,
the distance between the plane where the end face of the other end of the mounting protrusion is located and the plane where the end face of the other end of the tooth portion is located is larger than or equal to 3mm and smaller than or equal to 7 mm.
4. The monolithic core mounting structure according to claim 3,
the distance between the plane where the end face of one end of the tooth part is located and the plane where the end face of one end of the winding part is located is larger than or equal to 1.5mm and smaller than or equal to 3.5 mm.
5. The monolithic core mounting structure according to claim 4,
the distance between the plane where the end face of the other end of the tooth part is located and the plane where the end face of the other end of the winding part is located is larger than or equal to 1.5mm and smaller than or equal to 3.5 mm.
6. The monolithic core mounting structure according to claim 1,
the two mounting protrusions are oppositely arranged.
7. The monolithic core mounting structure according to claim 1,
the insertion hole is formed by partially recessing the positioning end face.
8. The monolithic core mounting structure according to claim 1,
the iron core injection molding piece is also provided with a ventilation groove for enabling the interior of the iron core to form wind pressure so as to radiate the interior of the iron core; the ventilation groove is arranged between the injection molding body and the mounting protrusion; the width of the ventilation groove in the circumferential direction of the iron core injection molding piece is more than or equal to 1mm and less than or equal to 2 mm; the height of the ventilation slot in the extending direction of the ventilation slot is equal to the height of the iron core in the extending direction of the iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921677425.0U CN211296339U (en) | 2019-10-09 | 2019-10-09 | Integral iron core mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921677425.0U CN211296339U (en) | 2019-10-09 | 2019-10-09 | Integral iron core mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211296339U true CN211296339U (en) | 2020-08-18 |
Family
ID=72018357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921677425.0U Expired - Fee Related CN211296339U (en) | 2019-10-09 | 2019-10-09 | Integral iron core mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211296339U (en) |
-
2019
- 2019-10-09 CN CN201921677425.0U patent/CN211296339U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 Termination date: 20211009 |