MOTOR CONTROLLER AND MOTOR APPLYING SAME

DISPOSITIF DE COMMANDE DE MOTEUR ET MOTEUR L'UTILISANT

English Abstract

A motor controller (9) and a motor using same comprise a control box (1) and a
control
circuit board (2) mounted inside a cavity (11) of the control box (1); a
control chip (3) is
mounted on an outer edge of a top surface of the control circuit board (2); an
outer wall
of the control box (1) is recessed inwards to form a heat dissipation boss
(12); a gap (13)
is formed between a bottom surface of the heat dissipation boss (12) and a
bottom wall of
the cavity (11); a plurality of support bosses (14) are provided on an inner
wall at the
bottom of the cavity (11); an outer edge of the control circuit board (2)
extends into the
inside of the gap (13) and enables an outer surface of the control chip (3) to
lie close
against an inner surface of the heat dissipation boss (12); and the control
circuit board (2)
is supported on a top surface of the support boss (14). The structure is
simple, and is
convenient to mount. Whenever the motor controller is mounted, an outer
surface of the
control chip (3) can be adjusted to lie close against an inner surface of the
heat dissipation
boss (12), achieving good heat dissipation performance and high reliability.

French Abstract

L'invention concerne un dispositif de commande de moteur (9) et un moteur l'utilisant qui comprennent un boîtier de commande (1) et une carte de circuit imprimé de commande (2) montée à l'intérieur d'une cavité (11) du boîtier de commande (1) ; une puce de commande (3) est montée sur un bord extérieur d'une surface supérieure de la carte de circuit imprimé de commande (2) ; une paroi extérieure du boîtier de commande (1) est en retrait vers l'intérieur pour former un bossage de dissipation de chaleur (12) ; un espace (13) est formé entre une surface inférieure du bossage de dissipation de chaleur (12) et une paroi inférieure de la cavité (11) ; une pluralité de bossages de support (14) sont prévus sur une paroi intérieure au niveau de la partie inférieure de la cavité (11) ; un bord externe de la carte de circuit imprimé de commande (2) s'étend dans l'intérieur de l'espace (13) et permet à une surface extérieure de la puce de commande (3) de venir se placer contre une surface intérieure du bossage de dissipation de chaleur (12) ; et la carte de circuit imprimé de commande (2) est soutenue sur une surface supérieure du bossage de support (14). La structure est simple, et est pratique pour l'installation. Chaque fois que le dispositif de commande de moteur est monté, une surface extérieure de la puce de commande (3) peut être adaptée pour se situer tout contre une surface intérieure du bossage de dissipation de chaleur (12), ce qui permet d'obtenir une bonne performance de dissipation de chaleur et une fiabilité élevée.

Claims

CLAIMS
1. A motor controller, comprising a control box (1) and a control circuit
board (2)
disposed on a chamber (11) of the control box (1);
wherein
a control chip (3) is disposed on an outer edge of an upper surface of the
control circuit board (2);
an outer wall of the control box (1) is depressed inward to form a heat
dissipation boss (12);
a gap (13) is formed between a bottom of the heat dissipation boss (12)
and an inner surface of a bottom of the chamber (11);
the inner surface of the bottom of the chamber (11) is provided with a
plurality of supporting bosses (14);
one outer edge of the control circuit board (2) inserts into the gap (13),
which enables an outer side surface of the control chip (3) to cling to an
inner side
surface of the heat dissipation boss (12);
the control circuit board (2) is supported by upper surfaces of the
supporting bosses (14);
the control chip (3) is sheathed with a silicone case (31);
the inner side surface of the heat dissipation boss (12) is a flat surface;
the control chip (3) is compressed on the inner side surface of the heat
dissipation boss (12) by a compressing bar (4); and
the compressing bar (4) is adjustably mounted on the heat dissipation boss
(12) by passing a screw through the compressing bar (4) and the heat
dissipation
boss (12) along a direction substantially perpendicular to the inner side
surface of
the heat dissipation boss (12).
8

2. The motor controller of claim 1, wherein the control circuit board (2)
is provided
with a plurality of mounting feet (21); and the mounting feet (21) are
supported
by the upper surfaces of the supporting bosses (14).
3. The motor controller of claim 1, the outer side surface of the heat
dissipation boss
(12) is provided with a plurality of fins (121); the mounting feet (21) are
installed
on the upper surfaces of the supporting bosses (14) via the screw (5).
4. The motor controller of claim 1, 2, or 3, wherein the control box (1) is
provided
with a mounting hole (15); the control circuit board (2) is provided with a
socket
(6); the socket (6) is sheathed in a wire sheath (7); and the wire sheath (7)
is
disposed in the mounting hole (15).
5. The motor controller of claim 4, wherein the wire sheath (7) is square-
shaped; two
sides and a bottom of the wire sheath (7) are provided with slots (71), and an
inner
wall of the mounting hole (15) is sheathed in the slots (71).
6. The motor controller of claim 5, wherein the chamber (11) is filled with
potting
material which covers part of or all of the control circuit board (2).
7. A motor, comprising a motor body (8) and a motor controller (9) of any
one of
claims 1-7;
wherein
the motor body (8) comprises a rotary shaft (81), a rotor assembly (82), a
stator assembly (83) and a shell assembly;
the rotor assembly (82) is disposed on the rotary shaft (81);
the stator assembly (83) and the shell assembly are integrated and are
sleeved on the outer side of the rotor assembly (82);
9

the motor controller (9) comprises a control box (1) and a control circuit
board (2) disposed on a chamber (11) of the control box (1);
the control box (1) is disposed on a side surface of the shell assembly;
a control chip (3) is disposed on an outer edge of an upper surface of the
control circuit board (2);
an outer wall of the control box (1) is depressed inward to form a heat
dissipation boss (12);
a gap (13) is formed between a bottom of the heat dissipation boss (12)
and an inner surface of a bottom of the chamber (11);
the inner surface of the bottom of the chamber (11) is provided with a
plurality of supporting bosses (14);
one outer edge of the control circuit board (2) inserts into the gap (13) and
enables an outer side surface of the control chip (3) to cling to an inner
side
surface of the heat dissipation boss (12);
mounting feet (21) are supported by upper surfaces of the supporting
bosses (14);
the control chip (3) is sheathed with a silicone case (31);
the inner side surface of the heat dissipation boss (12) is a flat surface;
the control chip (3) is compressed on the inner side surface of the heat
dissipation boss (12) by a compressing bar (4); and
the compressing bar (4) is adjustably mounted on the heat dissipation boss
(12) by passing a screw through the compressing bar (4) and the heat
dissipation
boss (12) along a direction substantially perpendicular to the inner side
surface of
the heat dissipation boss (12).

Description

CA 02931049 2016-05-18
MOTOR CONTROLLER AND MOTOR APPLYING SAME
TECHNICAL FIELD
[0001] The invention relates to a motor controller and a motor comprising the
same,
which belongs to the field of motor technology.
DESCRIPTION OF RELATED ART
[0002] Typically, a motor controller includes a control box and a control
circuit board
disposed inside the control box. A control chip is disposed on the upper
surface of the
control circuit board. The outer wall of the control box is depressed inward
to form a heat
dissipation boss. The control circuit board is disposed on the control box,
and the control
chip is clung to the heat dissipation boss. However, because conventional
control circuit
boards have various sizes and limited adjusting space, and the control chip of
the control
circuit boards cannot be absolutely clung to the heat dissipation boss. As a
result, the heat
dissipation of the control chip is adversely affected and the work efficiency
of the control
chip is reduced. Worse yet, problems with heat dissipation often lead to a
burnout of the
control circuit board.
SUMMARY OF THE INVENTION
[0003] In view of the above-described problems, it is one objective of the
invention to
provide a motor controller and a motor comprising the same, which feature
simple
structure and convenient installation. The outer side surface of the control
chip of the
motor controller is clung to the inner side surface of the heat dissipation
boss, so that the
motor controller and the motor have good heat dissipation performance and high
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reliability.
[0004] The objectives of the invention are achieved according to the following
technical
solutions.
[0005] To achieve the above objective, in accordance with one embodiment of
the
invention, there is provided with a motor controller, comprising a control box
and a
control circuit board disposed on a chamber of the control box. A control chip
is disposed
on an outer edge of an upper surface of the control circuit board. An outer
wall of the
control box is depressed inward to form a heat dissipation boss. A gap is
formed between
a bottom of the heat dissipation boss and an inner surface of a bottom of the
chamber. The
inner surface of the bottom of the chamber is provided with a plurality of
supporting
bosses. One outer edge of the control circuit board inserts into the gap and
enables an
outer side surface of the control chip to cling to an inner side surface of
the heat
dissipation boss. The control circuit board is supported by upper surfaces of
the
supporting bosses.
[0006] In a class of this embodiment, the control chip is sheathed with a
silicone case.
The control circuit board is provided with a plurality of mounting feet. The
mounting feet
are supported by the upper surfaces of the supporting bosses.
[0007] In a class of this embodiment, one side of the control chip is provided
with a
compressing bar to tightly compress the control chip on the inner side surface
of the heat
dissipation boss. A screw passes through an outer side surface of the heat
dissipation boss
and is screwed up in the compressing bar to mount the compressing bar on the
heat
dissipation boss.
[0008] In a class of this embodiment, the outer side surface of the heat
dissipation boss is
provided with a plurality of fins. The mounting feet are installed on the
upper surfaces of
the supporting bosses via the screw.
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[0009] In a class of this embodiment, the control box is provided with a
mounting hole.
The control circuit board is provided with a socket. The socket is sheathed in
a wire
sheath. The wire sheath is disposed in the mounting hole.
[0010] In a class of this embodiment, the wire sheath is square-shaped. Two
sides and a
bottom of the wire sheath are provided with slots so that an inner wall of the
mounting
hole is sheathed in the slots.
[00111 In a class of this embodiment, the chamber is filled with potting
material which
covers part of or all of the control circuit board.
[0012] A motor comprises a motor body and a motor controller. The motor body
comprises a rotary shaft, a rotor assembly, a stator assembly and a shell
assembly. The
rotor assembly is disposed on the rotary shaft. The stator assembly is
integrated with the
shell assembly, and is sleeved on the outer side of the rotor assembly. The
control box is
disposed on a side surface of the shell assembly. A control chip is disposed
on an outer
edge of an upper surface of the control circuit board. An outer wall of the
control box is
depressed inward to form a heat dissipation boss. A gap is formed between a
bottom of
the heat dissipation boss and an inner surface of a bottom of the chamber. The
inner
surface of the bottom of the chamber is provided with a plurality of
supporting bosses.
One outer edge of the control circuit board inserts into the gap and enables
an outer side
surface of the control chip to cling to an inner side surface of the heat
dissipation boss.
The control circuit board is supported by upper surfaces of the supporting
bosses.
[0013] In a class of this embodiment, the control chip is sheathed with a
silicone case.
[0014] In a class of this embodiment, one side of the control chip is provided
with a
compressing bar to tightly compress the control chip on the inner side surface
of the heat
dissipation boss. A screw passes through an outer side surface of the heat
dissipation boss
and is screwed up in the compressing bar to mount the compressing bar on the
heat
dissipation boss.
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[0015] Compared with existing technologies, advantages of the motor controller
and the
motor comprising the same are summarized as follows: 1) The motor controller
features
simple structure, and convenient installation. An outer side surface of the
control chip is
guaranteed to cling to an inner side surface of a heat dissipation boss to
endow the motor
controller with good heat dissipation performance. 2) The control chip is
sleeved with a
silicone case, so as to improve the heat dissipation performance of the
control chip, and
endow the control chip with insulation property and high reliability. 3) The
screw passes
through an outer side surface of the heat dissipation boss and is screwed up
in the
compressing bar to mount the compressing bar on the heat dissipation boss, and
the
installation is reliable. 4) The outer side surface of the heat dissipation
boss is provided
with a plurality of fins, and heat dissipation performance is thereby
improved; the
mounting feet are installed on the upper surfaces of the supporting bosses via
screws, and
the installation is reliable. 5) Potting material covers part of or all of the
control circuit
board, preventing dust or water from electronic components of the control
circuit board. 6)
The motor features simple structure, convenient installation, good heat
dissipation
performance, and high reliability.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG 1 is a stereogram of a motor controller in accordance with one
embodiment
of the invention;
[0017] FIG 2 is an exploded view of a motor controller in accordance with one
embodiment of the invention;
[0018] FIG 3 is a top view of a motor controller in accordance with one
embodiment of
the invention;
[0019] FIG 4 is a cross-sectional view taken from line A-A in FIG. 3 in
accordance with
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one embodiment of the invention;
[0020] FIG. 5 is a front view of a motor controller in accordance with one
embodiment of
the invention;
[0021] FIG 6 is a cross-sectional view taken from line B-B in FIG 5 in
accordance with
one embodiment of the invention;
[0022] FIG 7 is a stereogram of a motor in accordance with one embodiment of
the
invention; and
[0023] FIG 8 is an exploded view of a motor in accordance with one embodiment
of the
invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] For further illustrating the invention, experiments detailing a motor
controller and
a motor comprising the same are described below. It should be noted that the
following
examples are intended to describe and not to limit the invention.
Example 1
[0025] As shown in FIGS. 1-6, a motor controller comprises a control box 1 and
a control
circuit board 2 disposed on a chamber 11 of the control box 1. A control chip
3 is
disposed on an outer edge of an upper surface of the control circuit board 2.
An outer wall
of the control box 1 is depressed inward to form a heat dissipation boss 12. A
gap 13 is
formed between a bottom of the heat dissipation boss 12 and an inner surface
of a bottom
of the chamber 11. The inner surface of the bottom of the chamber 11 is
provided with a
plurality of supporting bosses 14. One outer edge of the control circuit board
2 inserts
into the gap 13 and enables an outer side surface of the control chip 3 to
cling to an inner

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side surface of the heat dissipation boss 12. The control circuit board 2 is
supported by
upper surfaces of the supporting bosses 14. The control chip 3 is sheathed
with a silicone
case 31. The control circuit board 2 is provided with a plurality of mounting
feet 21. The
mounting feet 21 are supported by the upper surfaces of the supporting bosses
14. One
side of the control chip 3 is provided with a compressing bar 4 to tightly
compress the
control chip 3 on the inner side surface of the heat dissipation boss 12. A
screw 5 passes
through an outer side surface of the heat dissipation boss 12 and is screwed
up in the
compressing bar 4 to mount the compressing bar 4 on the heat dissipation boss
12. The
outer side surface of the heat dissipation boss 12 is provided with a
plurality of fins 121.
The mounting feet 21 are installed on the upper surfaces of the supporting
bosses 14 via
the screw 5. The control box 1 is provided with a mounting hole 15. The
control circuit
board 2 is provided with a socket 6. The socket 6 is sheathed in a wire sheath
7. The wire
sheath 7 is disposed in the mounting hole 15. The wire sheath 7 is square-
shaped. Two
sides and a bottom of the wire sheath 7 are provided with slots 71 so that an
inner wall of
the mounting hole 15 is sheathed in the slots 71. The chamber 11 is filled
with potting
material which covers part of or all of the control circuit board 2.
Example 2
[0026] As shown in FIGS. 1-8, a motor comprises a motor body 8 and a motor
controller
9. The motor body 8 comprises a rotary shaft 81, a rotor assembly 82, a stator
assembly
83 and a shell assembly. The rotor assembly 82 is disposed on the rotary shaft
81. The
stator assembly 83 is integrated with the shell assembly, and is sleeved on
the outer side
of the rotor assembly 82. The shell assembly comprises a shell 84, a front
cover 85, and a
rear cover 86. The motor controller 9 comprises a. control box 1 and a control
circuit
board 2 disposed on a chamber 11 of the control box 1. The control box 1 is
disposed on
the rear cover 86. A control chip 3 is disposed on an outer edge of an upper
surface of the
6

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control circuit board 2. An outer wall of the control box 1 is depressed
inward to form a
heat dissipation boss 12. A gap 13 is formed between a bottom of the heat
dissipation
boss 12 and an inner surface of a bottom of the chamber 11. The inner surface
of the
bottom of the chamber 11 is provided with a plurality of supporting bosses 14.
One outer
edge of the control circuit board 2 inserts into the gap 13 and enables an
outer side
surface of the control chip 3 to cling to an inner side surface of the heat
dissipation boss
12. The mounting feet 21 are supported by upper surfaces of the supporting
bosses 14.
The control chip 3 is sheathed with a silicone case 31. One side of the
control chip 3 is
provided with a compressing bar 4 to tightly compress the control chip 3 on
the inner side
surface of the heat dissipation boss 12. A screw 5 passes through an outer
side surface of
the heat dissipation boss 12 and is screwed up in the compressing bar 4 to
mount the
compressing bar 4 on the heat dissipation boss 12.
[0027] While particular embodiments of the invention have been shown and
described, it
will be obvious to those skilled in the art that changes and modifications may
be made
without departing from the invention in its broader aspects, and therefore,
the aim in the
appended claims is to cover all such changes and modifications as fall within
the true
spirit and scope of the invention.
7

Representative Drawing