CN214707444U - Mounting structure of built-in controller of non-inductive brushless motor - Google Patents

Abstract

The utility model discloses an installation structure of a built-in controller of a non-inductive brushless motor, which comprises a controller housing, a controller, a stator insulation framework and a motor body, wherein the controller housing is in threaded connection with the motor body through a screw rod, the controller comprises an upper circular plate, a lower circular plate and components arranged on the upper circular plate and the lower circular plate, the inner side wall of the controller housing is in a circular shape sleeved with the excircle of the two circular plates, the lower circular plate is fixed with the upper circular plate through a supporting structure, and the lower circular plate is radially clamped and axially limited at the top of the circular stator insulation framework; the supporting structure comprises an L-shaped plate, hard wires in a plurality of L shapes are fixed to the vertical plate, the lower portion of the L-shaped plate is fixed to one side of the lower circular plate, one ends of the hard wires in the plurality of L shapes are connected in a transverse inserting mode, and the other ends of the hard wires in the plurality of L shapes are welded to the upper circular plate. The diameter of the controller panel is greatly reduced, the radial area of the motor is further reduced, and the installation process is simplified.

Description

Mounting structure of built-in controller of non-inductive brushless motor

Technical Field

The utility model relates to the technical field of motors, specifically say a mounting structure of noninductive brushless motor's built-in controller.

Background

Brushless motors are generally called brushless direct current motors, and in recent years, with the technology becoming mature and perfect, brushless motors have been widely used in fields such as aeromodelling, medical equipment, household appliances, office automation and the like.

Early brushless motor's controller is all external, and the space that occupies is great, and material costs such as pencil are higher relatively. In recent years, a built-in controller of a brushless motor is gradually popularized, and compared with an external controller, the requirement on spatial layout of the built-in controller or the controller is relatively low, partial wiring harnesses and other materials and components are reduced, and the production cost of the product is relatively reduced. The non-inductive motor judges the position of the rotor to change the phase through the electrically-adjusted back electromotive force signal, and the back electromotive force detection signal from the back electromotive force detection circuit directly outputs three-phase symmetrical sine wave alternating current to the stator winding so as to ensure the normal operation of the brushless motor. Compared with an induction motor, the non-induction motor reduces Hall elements and relatively reduces the production cost of products.

However, the mounting structure of the built-in controller of the sensorless brushless motor in the prior art still has the following disadvantages: the controller is a large-diameter circular annular plate, the radial occupied area is large, the radial area of the motor is large, and the occupied equipment space is large after the motor is installed. The controller and the shell of the motor are fixed by a plurality of screws, and then the controller housing or the controller end cover is fixed with the motor shell or the motor rear cover by a plurality of screws. The controller occupies more space in positioning and fixing, reduces the installation area of controller components, namely reduces the working area of the controller panel, reduces the space utilization rate of the controller panel, further increases the size of the controller and the motor, has relatively more assembling parts, is more complicated in installation process, has relatively high production cost, namely labor cost and material cost, and influences the heat dissipation effect of the controller components.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a reduce the diameter of controller panel by a wide margin, and then reduce the radial area of motor and simplify the mounting process's noninductive brushless motor's built-in controller's mounting structure.

The technical solution of the utility model is, a mounting structure of noninductive brushless motor's built-in controller is provided, including controller housing, a controller, stator insulation skeleton and motor body, the controller housing is through screw rod and motor body spiro union, the controller includes two upper and lower ring plates and installs the components and parts on two upper and lower ring plates, the inside wall of controller housing is the circular with two ring plate excircle registrates, lower ring plate is fixed through a bearing structure and last ring plate, lower ring plate radial joint is spacing at the top of circular shape stator insulation skeleton to the axial.

After the structure above the adoption, the utility model discloses mounting structure of noninductive brushless motor's built-in controller has following advantage: the controller adopts an upper circular ring plate and a lower circular ring plate, namely the upper circular ring plate and the lower circular ring plate, the circular ring plates can also be called as controller panels, the outer diameter of each controller panel is greatly reduced, for example, the outer diameter is reduced by 1/3-1/2, the radial occupied area is greatly reduced, the radial area of the motor is also greatly reduced, and the occupied equipment space is relatively reduced after the motor is installed. The upper and lower circular ring plates are fixed by a supporting structure, the lower circular ring plate is radially clamped and axially limited at the top of the circular stator insulating framework, only the controller cover shell is sleeved and screwed by a screw rod during assembly, the mounting structure reduces the occupied area of the upper circular ring plate and the lower circular ring plate, increases the mounting area of the controller components, the working area of the circular ring-shaped plate is increased, the utilization rate of the circular ring-shaped plate is improved, particularly, a supporting structure enables a larger distance to be reserved between the two plates, the components of the upper circular ring-shaped plate and the lower circular ring-shaped plate have enough space for extending in opposite directions, the number of assembly parts is reduced, the installation process is simplified, the production cost is reduced, namely, the labor cost and the material cost are reduced, and the upper and lower circular plates and the insulating framework are firmly and reliably limited and fixed, so that the integration of the sensorless brushless motor and the controller is better.

Further, bearing structure includes an L font shaped plate, and the stereoplasm wire of many L fonts passes the hole on the riser and is fixed with the riser, and L font board lower part is fixed in one side of circle annular slab down, and the one end of the stereoplasm wire of many L fonts is horizontal plug joint, and the other end and the last ring annular slab welding of the stereoplasm wire of many L fonts. After the structure is adopted, the requirement of electric connection is met, the upper circular plate and the lower circular plate are fixed, and the limit fixation between the upper circular plate and the lower circular plate and the insulating framework is further ensured to be firm and reliable.

Furthermore, the top of the circular stator insulation framework is provided with a circular shelf for placing the edge of the lower circular plate, a plurality of upward buckling columns are arranged on the circular shelf at intervals, the excircle of the lower circular plate is provided with a plurality of radial rectangular grooves clamped with the buckling columns, and the inner side of the top end of each buckling column is provided with an arrow-type reverse buckle for buckling the top surface of the lower circular plate. After the structure is adopted, the lower circular ring plate and the circular stator insulating frame are stable and reliable in radial limiting, circumferential limiting and axial limiting, and the connection is firmer.

Further, ring shape shelf top interval is equipped with a plurality of ascending radial spacing posts, and the inboard of radial spacing post is the arc, and lower ring shape board excircle has a plurality of radial arc recesses with spacing post block. After the structure is adopted, the radial limit, the circumferential limit and the axial limit of the lower circular ring plate and the circular stator insulating frame are further enhanced, and the connection is firmer.

Furthermore, a plurality of gaps for ventilation and heat dissipation are arranged on the circular shelf. After the structure is adopted, the heat dissipation of the lower circular ring plate is guaranteed, and the lower stator coil is ventilated and cooled.

Furthermore, a controller plug-in port which is also used as a ventilation and heat dissipation port is arranged on a side plate of the controller housing, and the L-shaped plate fixed with the hard lead is positioned at the controller plug-in port. After adopting above structure, it is more convenient to connect electrically, and is better to the radiating effect of last annular plate and lower annular plate.

Furthermore, the center of the top plate of the controller cover shell is provided with a heat dissipation hole which is also used as a process hole. After adopting above structure, it is more convenient to install, and is better to the radiating effect of last annular plate and lower annular plate.

Further, the power element is provided on the upper circular ring plate. After the structure is adopted, the power element is far away from the stator with larger heat, so that the heat dissipation effect of the power element is good, and the working stability of the controller is further ensured.

Furthermore, the controller housing and the motor body are in a shape of a chamfered square, four corners of the controller housing are provided with first through holes, the top of each first through hole is a counter bore, four corners of a motor stator of the motor body are provided with second through holes corresponding to the first through holes, four corners of a motor end cover of the motor body are provided with threaded holes corresponding to the second through holes, the screw rods penetrate through the respective first through holes and the respective second through holes and are screwed in the respective threaded holes, and the large heads of the screw rods are accommodated in the counter bores; the bottom of the four corners of the controller housing is provided with downward extending convex blocks to form heat dissipation gaps. After the structure is adopted, the motor has relatively small appearance volume and compact structure, the installation process is further simplified, and the heat dissipation effect is better.

Furthermore, the border of going up the annular plate has a plurality of arc breachs, and the border of lower annular plate also has a plurality of arc breachs, has corresponding and be used for the spacing protruding muscle of arc of circumference on the circular inner wall of corresponding controller housing, and the protruding muscle of arc extends along circular inner wall axial. After the structure is adopted, the guide performance is better when the upper circular ring plate and the lower circular arc plate are installed, the installation is more convenient and quicker, the circumferential limiting effect is better after the upper circular ring plate and the lower circular arc plate are in place, and the connection is more stable and reliable.

Drawings

Fig. 1 is a schematic perspective view of a brushless motor using the mounting structure of the built-in controller according to the present invention.

Fig. 2 is a schematic diagram of a partially exploded structure of fig. 1 (components on the upper and lower circular plates are not shown).

Fig. 3 is a schematic diagram of a still further partial explosion structure in fig. 2 (components on the upper and lower circular plates are not shown).

Fig. 4 is a schematic diagram of a further partial explosion structure shown in fig. 2 (components on the upper and lower circular plates are not shown).

Fig. 5 is a schematic bottom view of the controller housing according to the present invention.

Shown in the figure: 1. stator insulation skeleton, 2, the louvre, 3, the counter bore, 4, first through-hole, 5, the controller housing, 6, motor body, 7, the breach of ventilation cooling usefulness, 8, controller plug-in components mouth, 9, go up the annular plate, 10, lower annular plate, 11, L font board, 12, the annular shelf, 13, the stereoplasm wire, 14, the controller, 15, the other end of stereoplasm wire, 16, the one end of stereoplasm wire, 17, radial rectangle recess, 18, the second through-hole, 19, the post of buckleing, 20, arrow point formula back-off, 21, radial spacing post, 22, the arc breach, 23, the motor end cover, 24, motor stator, 25, the heat dissipation gap, 26, the lug, 27, radial arc recess, 28, circular inner wall.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, 2, 3, 4 and 5.

The utility model discloses mounting structure of noninductive brushless motor's built-in controller, including controller housing 5, controller 14, the insulating skeleton 1 of stator and motor body 6. The controller case 5 is screwed to the motor body 6 via a screw (not shown in the drawings, the same applies hereinafter). It is understood that the above the name of the present invention includes two layers: a built-in controller of a non-inductive brushless motor, and a mounting structure of the built-in controller of the non-inductive brushless motor.

The controller housing 5 and the motor body 6 can be in the shape of a chamfered square, the four corners of the controller housing 5 are provided with first through holes 4, the top of each first through hole 4 is a counter bore 3, the four corners of the motor stator 24 of the motor body 6 are provided with second through holes 18 corresponding to the first through holes 4, the four corners of the motor end cover 23 of the motor body 6 are provided with threaded holes (not shown in the figure of the threaded hole, the same applies hereinafter) corresponding to the second through holes 18, the screw rods penetrate through the respective first through holes 4 and the respective second through holes 18 and are screwed in the respective threaded holes, and the large ends of the screw rods are accommodated in the counter bores 3. The center of the top plate of the controller housing 5 is provided with a heat dissipation hole 2 which is also used as a process hole. The bottom ends of the four corners of the controller case 5 have downward extending projections 26 to form heat dissipating slits 25.

The controller 14 comprises an upper circular ring plate, a lower circular ring plate and components (not shown in the component figure, the same applies below) arranged on the upper circular ring plate and the lower circular ring plate, the inner side wall of the controller housing 5 is circular and is sleeved with the outer circles of the two circular ring plates, the lower circular ring plate 10 is fixed with the upper circular ring plate 9 through a supporting structure, and the lower circular ring plate 10 is radially clamped and axially limited at the top of the circular stator insulation framework 1. The power element is provided on the upper circular ring plate 9. The border of going up ring shape board 9 has a plurality of arc breachs 22, and the border of lower ring shape board 10 also has a plurality of arc breachs 22, has corresponding and be used for the spacing arc protruding muscle of circumference (arc protruding muscle is not shown in the figure) on the circular inner wall 28 of corresponding controller housing 5, and the arc protruding muscle is along circular inner wall 28 axial extension.

The supporting structure preferably comprises an L-shaped plate 11, a plurality of L-shaped hard wires 13 penetrate through holes in a vertical plate of the L-shaped plate 11 and are fixed to be adhered to the vertical plate as glue if the hard wires 13 used as signal lines pass through the holes in the vertical plate, the lower portion of the L-shaped plate 11 is fixed to be adhered to one side of the lower circular plate 10 as glue, one ends 16 of the plurality of L-shaped hard wires are transverse plug-in connectors, the other ends 15 of the plurality of L-shaped hard wires are welded to the upper circular plate 9 as wave soldering, see figure 4, four through holes in the welding position of the upper circular plate 9 are shown in the figure, the other ends 15 of the four hard wires are correspondingly plugged into the four through holes one by one, but the wave soldering welding heads are not shown in the figure. The L-shaped plate 11 may be made of an insulating material. The upper and lower annular plates 9, 10 may both be referred to as controller panels.

A controller plug-in port 8 which is also used as a ventilation and heat dissipation port is arranged on a side plate of the controller housing 5, and an L-shaped plate 11 fixed with a hard lead 13 is positioned at the controller plug-in port 8.

The top of circular shape stator insulation skeleton 1 has one to shelve the ring shape shelf 12 at lower circular ring shape board 10 border, and the interval is equipped with a plurality of ascending knot posts 19 on the ring shape shelf 12, and lower circular ring shape board 10 excircle has a plurality of radial rectangle recesses 17 with detaining the 19 block of post, detains the arrow point formula back-off 20 that 19 top surfaces of post inboard have the lower circular ring shape board of lock 10. The radial rectangular grooves 17 may also be referred to as transverse Contraband-shaped grooves that open outward.

The top of the circular ring-shaped shelf 12 is provided with a plurality of upward radial limiting columns 21 at intervals, the inner sides of the radial limiting columns 21 are arc-shaped, and the outer circle of the lower circular ring-shaped plate 10 is provided with a plurality of radial arc-shaped grooves 27 clamped with the radial limiting columns 21. The circular shelf 12 is provided with a plurality of notches 7 for ventilation and heat dissipation.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a mounting structure of built-in controller of noninductive brushless motor, includes controller housing, controller, the insulating skeleton of stator and motor body, and the controller housing is through screw rod and motor body spiro union, its characterized in that: the controller comprises an upper circular ring plate, a lower circular ring plate and components mounted on the upper circular ring plate and the lower circular ring plate, the inner side wall of the controller housing is circular and is sleeved with the outer circles of the two circular ring plates, the lower circular ring plate is fixed with the upper circular ring plate through a supporting structure, and the lower circular ring plate is radially clamped and axially limited at the top of the circular stator insulation framework.

2. The structure of mounting a built-in controller of a sensorless brushless motor according to claim 1, wherein: the supporting structure comprises an L-shaped plate, a plurality of L-shaped hard wires penetrate through holes in the vertical plate to be fixed to the vertical plate, the lower portion of the L-shaped plate is fixed to one side of the lower circular plate, one ends of the L-shaped hard wires are connected in a transverse inserting mode, and the other ends of the L-shaped hard wires are welded to the upper circular plate.

3. The mounting structure of the built-in controller of the sensorless brushless motor according to claim 1 or 2, characterized in that: the top of the circular stator insulation framework is provided with a circular ring-shaped shelf for placing the edge of the lower circular ring-shaped plate, a plurality of upward buckling columns are arranged on the circular ring-shaped shelf at intervals, a plurality of radial rectangular grooves for clamping the buckling columns are arranged on the excircle of the lower circular ring-shaped plate, and the inner side of the top end of each buckling column is provided with an arrow-type back-off for buckling the top surface of the lower circular ring-shaped plate.

4. The structure of claim 3, wherein: the top of the circular ring-shaped shelf is provided with a plurality of upward radial limiting columns at intervals, the inner sides of the radial limiting columns are arc-shaped, and the outer circle of the lower circular ring-shaped shelf is provided with a plurality of radial arc-shaped grooves clamped with the limiting columns.

5. The structure of claim 3, wherein: the circular shelf is provided with a plurality of notches for ventilation and heat dissipation.

6. The structure of mounting a built-in controller of a sensorless brushless motor according to claim 2, wherein: the side plate of the controller housing is provided with a controller plug-in port which is also used as a ventilation and heat dissipation port, and the L-shaped plate fixed with the hard lead is positioned at the controller plug-in port.

7. The structure of mounting a built-in controller of a sensorless brushless motor according to claim 1, wherein: the center of the top plate of the controller cover shell is provided with a heat dissipation hole which is also used as a fabrication hole.

8. The structure of claim 7, wherein: the power element is arranged on the upper circular ring plate.

9. The structure of mounting a built-in controller of a sensorless brushless motor according to claim 1, wherein: the controller housing and the motor body are in a chamfered square shape, first through holes are formed in four corners of the controller housing, counter bores are formed in the tops of the first through holes, second through holes corresponding to the first through holes are formed in four corners of a motor stator of the motor body, threaded holes corresponding to the second through holes are formed in four corners of a motor end cover of the motor body, screw rods penetrate through the respective first through holes and the respective second through holes and are screwed in the respective threaded holes, and large heads of the screw rods are accommodated in the counter bores; the bottom of the four corners of the controller housing is provided with downward extending convex blocks to form heat dissipation gaps.

10. The structure of mounting a built-in controller of a sensorless brushless motor according to claim 1, wherein: go up the border of circular annular plate and have a plurality of arc breachs, the border of lower circular annular plate also has a plurality of arc breachs, has corresponding and is used for the spacing arc protruding muscle of circumference on the circular inner wall of corresponding controller housing, and the arc protruding muscle extends along circular inner wall axial.

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