TW201603941A - Direct motor-drive portable angle grinder - Google Patents

Abstract

The present invention is an original direct motor-drive portable angle grinder with a disc type motor installed in a position adjacent to the grinding wheel and an outer motor rotating part coaxially and directly driving the grinding wheel. By means of the direct drive, the present invention prevents the emission of noise made by angle type transmission devices. Moreover, an inertial body is installed on the rotating housing that is integrated with the rotating part to form a flywheel or the rotating housing and the inertial body are integrated into a single reinforced structure to enable a flywheel function in order to improve the grinding, polishing and machining or cutting abilities of the grinding wheel.

Description

Motorized straight-drive driven corner grinder

The invention is the first rotary angle hand-held grinder driven by a motor, which is disposed at a position adjacent to the grinding wheel by a disc type motor, and the grinding wheel is directly driven by the external rotating shaft, and the angle driving device can be avoided by direct driving. The noise, in addition, may be provided with an inertial body in a rotating outer casing combined with the motor rotating portion to constitute a flywheel or a reinforcing structure integrally formed by the rotating outer casing and the inertial body to constitute a flywheel function to improve the grinding cutting or cutting ability of the grinding wheel; In addition to the manual operation of the electromechanical device, the holding handle can be placed on the grip handle when the storage and discharge device is used as the power source.

The traditional motor-driven right-angle hand-held grinder is an ergonomically designed power tool. Its structural features are as follows: (1) The axial direction of the grip handle extended by the casing is 30°~150° to the axial direction of the grinding wheel. (2) The electric motor is disposed in the grip handle; (3) the grinding wheel shaft and the motor shaft disposed on the gripping hand have a corner type transmission device such as an umbrella angle gear set; since the above structure must have a corner The type of transmission that causes too much noise is missing.

The invention is the first type of rotary angle hand-held grinder driven by a motor direct knot, which is disposed at a position adjacent to the grinding wheel by a disc type motor, and the externally rotating motor is the same The shaft directly drives the grinding wheel, and the direct drive can avoid the noise of the corner transmission. In addition, the inertia body can be arranged in the rotary housing combined with the motor rotating portion to form a flywheel or a reinforcing structure formed by the rotary housing and the inertia body. The flywheel function is used to improve the grinding cutting or cutting ability of the grinding wheel; in addition to the manual operation of the electromechanical device, when the storage and discharge device is used as the power source, the storage and discharge device can be placed on the grip handle.

(100)‧‧‧Drive motor

(150)‧‧‧ commutator drive motor

(151)‧‧‧ commutator drive motor static part

(152)‧‧‧ commutator drive motor turn

(153)‧‧‧ commutator

(154)‧‧‧ brushes group

(160)‧‧‧Brushless motor

(161) ‧‧‧ brushless motor static

(162)‧‧‧ Brushless motor turn

(200) ‧‧ ‧ motor turn

(201)‧‧‧Rotary casing

(202) ‧‧ ‧ commutator motor magnetic field structure

(205)‧‧‧Motor Statics

(206)‧‧‧Motor coil winding

(210)‧‧‧Flap structure

(250) ‧ ‧ ventilation holes

(300)‧‧‧Motor shaft

(400) ‧ ‧ housing

(500)‧‧‧Hand grip

(600)‧‧‧ brushes

(700)‧‧‧Insulation

(800)‧‧‧ grinding wheel

(900)‧‧‧ blades

(1000)‧‧‧ inertial body

(1100) ‧ ‧ cover

(1200)‧‧‧Storage and discharge device

(1300)‧‧‧Control circuit

(1400) ‧‧‧Manually operated electromechanical devices

(1500)‧‧‧Power cord

FIG. 1 is a schematic view showing the main structure of the corner-type hand grinder driven by the motor.

FIG. 2 shows one embodiment of the invention for driving the grinding wheel coaxially by the rotating portion of the driving motor and the housing.

FIG. 3 shows a second schematic diagram of an embodiment of the present invention.

FIG. 4 shows a third schematic diagram of an embodiment of the present invention.

FIG. 5 shows a fourth schematic diagram of an embodiment of the present invention.

FIG. 6 is a schematic structural view of an embodiment of the embodiment of FIG. 2 with an inertia flywheel added thereto.

FIG. 7 is a schematic structural view of an embodiment of the embodiment of FIG. 3 with an inertia flywheel added thereto.

FIG. 8 is a schematic structural view of an embodiment of the embodiment of FIG. 4 with an inertia flywheel added thereto.

FIG. 9 is a schematic structural view of an embodiment of the embodiment of FIG. 5 with an inertia flywheel added thereto.

Fig. 10 is a view showing an embodiment of a commutator type motor in which a casing and an internal rotation motor are co-constructed according to the present invention.

Figure 11 is a second embodiment of the embodiment of the commutator motor in which the casing and the inner-rotating motor are co-constructed.

Figure 12 is a view showing one embodiment of the present invention in which the casing and the inner-rotating brushless motor are co-constructed.

Figure 13 is a second embodiment of the present invention in which the casing and the inner-rotating brushless motor are co-constructed.

The invention is the first rotary angle hand-held grinder driven by a motor, which is arranged in a position adjacent to the grinding wheel by a disc type motor, and the grinding wheel or the circular saw is directly driven by the external rotating part of the motor, which can be avoided by direct driving. The noise of the corner transmission, in addition, the inertia body can be arranged in the rotary housing combined with the motor rotating portion to form a flywheel or a reinforcing structure formed by the rotary housing and the inertial body integrally forming a flywheel function to enhance the grinding wheel or the circular saw Those who grind cutting or cutting ability; in addition to setting the manual control electromechanical device, when the storage and discharge device is used as the power source, the storage and discharge device can be placed on the grip handle.

FIG. 1 is a schematic view showing the main structural structure of the present invention. The structure of the rotary angle hand-held grinder driven by the externally-rotating motor is shown in FIG. The grinding wheel is used as a structure for coaxial drive; its main components include:--Drive motor (100): consists of an AC or DC, brushless or brushed, synchronous or asynchronous externally-rotating electric motor, including a cylindrical type Or the motor or the motor rotating part (200) of the cone type or the disc type, and is coupled to the rotary housing (201) of the motor directly or via the insulating layer (700), so that the externally rotating motor rotating part is made high speed and high. Inertial rotary drive, in order to facilitate grinding or cutting of the workpiece by the grinding wheel (800) or circular saw, and to facilitate the motor heat sink, the rotating shaft (300) of the motor rotating part (200) is provided for coaxially setting the grinding wheel (800); - a casing (400): a structural body composed of a solid material for providing a drive motor (100), and a grip handle (500) having an integrally extended or combined configuration, characterized by a drive motor (100) setting In the casing (400), the axial direction of the rotating shaft (300) of the rotating portion (200) of the driving motor (100), The grip handle (500) is characterized by a 30°~150° angle; the grip handle (500) is a hollow body for providing one or more of the following circuit devices, including: power cord (1500), manual operation electromechanical device (1400), storage and discharge device (1200), selectively set control circuit (1300), or indicator light, display device, etc., for controlling the motor of the motor directly driving the corner type hand-held grinding wheel Operator of the machine; - Manually operated electromechanical device (1400): an interface for a corner-type hand-held grinder for direct or controlled operation of the motor directly or via a control circuit (1300), comprising an electromechanical or solid-state electronic structure, For operation as a switch and/or speed change and/or shifting of the motor; - control circuit (1300): for performing switching and/or speed switching and/or shifting operation and/or voltage on the motor , current control and protector; -- grinding wheel (800): is the shaft (300) that can be set on the motor rotating part (200), for the operator to be driven by the rotary drive for grinding or cutting the workpiece; -- Cover (1100): for one side of the grinding wheel (800) and the rotating part (200) near the hand held handle; the motor of the direct-drive driving angle of the hand-held grinder as shown in Fig. 1 can be selected according to the choice of the motor The following embodiments include: FIG. 2 is a schematic diagram of an embodiment of the present invention; FIG. 3 is a second schematic diagram of an embodiment of the present invention; 5 is a fourth schematic diagram of an embodiment of the present invention.

2 is an embodiment of the invention for driving the grinding wheel coaxially by the rotating portion of the driving motor and the casing, and is an embodiment in which the brushless external power motor is powered by the commercial power, and the main components thereof include: --Drive motor (100): It is composed of AC or DC, brushless synchronous or asynchronous external electric motor, including motor static part and motor rotating part with cylindrical or cone type or disc type ( 200), and directly or through the insulating layer (700) is coupled to the rotating casing (201) of the motor, so that the external rotating motor rotating portion is driven by high-speed and high-inertial rotation to facilitate the grinding wheel (800) or the circular saw For grinding or cutting operations and for facilitating heat dissipation of the motor, the rotating shaft (300) of the motor rotating portion (200) is for coaxially setting the grinding wheel (800); the casing (400) is a structural body composed of solid materials. For setting a driving motor (100), and a grip handle (500) integrally formed or combined, characterized in that the driving motor (100) is disposed on the casing (400), and the rotating shaft of the rotating portion (200) of the driving motor (100) The axial direction of (300) is characterized by a 30° to 150° angle with the axial direction of the grip handle (500); -- grip handle (500): a hollow body for setting one or more of the following: The circuit device comprises: a power line (1500), a manually operated electromechanical device (1400), a selectively set control circuit (1300), or an indicator light, a display device, etc., for controlling the motor of the motor to directly drive the corner handheld The operator of the grinder;--manually operated electromechanical device (1400): for the direct or controlled circuit (1300) as the operator to operate the motor directly connected to the corner of the hand-held grinder interface, including electromechanical or solid state The electronic structure is configured to function as a switch and/or a speed change and/or a shifting operation of the motor; a control circuit (1300): for performing switching and/or speed switching and/or shifting of the motor Operation and / or voltage and current control and protection; -- grinding wheel (800): The operator is provided for the rotating shaft (300) of the motor rotating portion (200) for grinding or cutting the workpiece; - cover (1100): for setting on the grinding wheel (800) and rotating The part (200) is adjacent to one side of the handle; wherein: the motor rotating part (200) is attached to the inner side of the driven rotating casing (201), so that the external rotating motor rotating part is driven by high speed and high inertia. In order to facilitate the grinding or cutting operation of the grinding wheel and to facilitate the heat dissipation of the motor, the rotating shaft (300) of the motor rotating portion (200) is provided for coaxially setting the grinding wheel (800); and the coil winding (206) of the motor is insulated. (700) is provided in the motor stationary part (205).

FIG. 3 is a second schematic view of the embodiment of the present invention. In FIG. 3, the commutator externally-converted motor is configured as a driving motor in the embodiment shown in FIG. 1; and the motor rotating portion (200) is powered. The pivot is formed by the electric energy input by the brush (600); the main components thereof include: --Drive motor (100): It consists of an AC or DC commutator brushed external electric motor, including a permanent magnet or wound excitation with a cylindrical or tapered or disc type a motor magnetic field structure (202) and a motor rotating portion (200) composed of an armature and inputting electric energy by a brush (600), and the motor rotating portion (200) is coupled to the motor by direct or via an insulating layer (700) The outer casing (201) is used for rotating the outer rotating motor to rotate at a high speed and high inertia, so as to facilitate the grinding or cutting operation of the grinding wheel (800) or the circular saw, and to facilitate the heat dissipation of the motor, the motor rotating portion (200) The rotating shaft (300) is for coaxially setting the grinding wheel (800); the casing (400) is a structural body composed of a solid material for providing a driving motor (100), and having an integral extension or a combined configuration The handle (500) is characterized in that the driving motor (100) is disposed on the casing (400), the axial direction of the rotating shaft (300) of the rotating portion (200) of the driving motor (100), and the shaft of the holding handle (500) It is characterized by a folding angle of 30°~150°;--handle handle (500): is a hollow body for providing one or more of the following circuit devices, including: a power cord (1500), a manually operated electromechanical device (1400), an optional control circuit (1300), or an indicator light, a display device, etc., for operating the motor of the corner-type hand-held grinder driven by the motor; - Manually operated electromechanical device (1400): an interface for a corner-type hand-held grinder for direct or controlled operation of the motor directly or via a control circuit (1300), comprising an electromechanical or solid-state electronic structure, For operation as a switch and/or speed change and/or shifting of the motor; - control circuit (1300): for performing switching and/or speed switching and/or shifting operation and/or voltage on the motor , current control and protector; -- grinding wheel (800): is the shaft (300) that can be set on the motor rotating part (200), for the operator to be driven by the rotary drive for grinding or cutting the workpiece; -- Cover (1100): disposed on one side of the grinding wheel (800) and the rotating part (200) near the handle; wherein: the motor rotating part (200) is attached directly or via the insulating layer (700) The inner side of the rotating outer casing (201) is driven to rotate the outer rotating motor to perform high-speed and high-inertia rotation to facilitate the grinding or cutting operation of the grinding wheel and the shaft of the motor rotating part (200). (300) For the coaxial setting of the grinding wheel (800).

FIG. 4 is a third schematic view of the embodiment of the present invention. In FIG. 4, the storage and discharge device (1200) and the manually operated electromechanical device (1400) are disposed in the grip handle (500) in the embodiment of FIG. 2; Its main components include:--Drive motor (100): It is composed of AC or DC, brushless synchronous or asynchronous external electric motor, including motor static part with cylindrical or cone or disc type. And the motor rotating portion (200), the motor rotating portion (200) is directly or through the insulating layer (700) is coupled to the rotating casing (201) of the motor, so that the external rotating motor rotating portion is driven by the high-speed and high-inertial rotation to facilitate the rotation. Grinding wheel (800) or circular saw for grinding or cutting workpieces and for motor heat dissipation, motor shaft (200) shaft (300) for coaxial setting of grinding wheel (800); --- casing (400) a structure consisting of a solid material for providing a drive motor (100), and a grip handle (500) having an integrally extended or combined configuration, characterized in that the drive motor (100) is disposed on the casing (400). The axial direction of the rotating shaft (300) of the rotating portion (200) of the driving motor (100) is a 30-150° angle to the axial direction of the grip handle (500). Applicator;--handle handle (500): is a hollow body for providing one or more of the following circuit devices, including: power line (1500), manual operation electromechanical device (1400), storage and discharge device (1200) Selective control circuit (1300), or indicator light, display device, etc., for the operator of the rotary angle hand-held grinder for controlling the direct drive of the motor; - manual operation electromechanical device (1400): for direct Or the control circuit (1300) is used as an operator to operate the interface of the motorized direct-drive driving corner grinder, including an electromechanical or solid-state electronic structure, as a switch and/or speed switching of the motor and/or Or variable speed operation function; --- control circuit (1300): for the execution of the motor switch and / or speed Switching and / or shifting operation and / or voltage and current control and protection; - grinding wheel (800): for the shaft (300) can be set on the motor rotating part (200) for the rotary drive The operator who grinds or cuts the workpiece; --- cover (1100): is disposed on one side of the grinding wheel (800) and the rotating part (200) near the handle; wherein: the motor rotating part (200) is attached to The inner side of the driven rotary casing (201) is used for the high-speed and high-inertial rotation of the externally-rotating motor to facilitate the grinding or cutting operation of the grinding wheel and the heat dissipation of the motor, and the motor rotating portion (200) The rotating shaft (300) is for coaxially setting the grinding wheel (800).

FIG. 5 is a fourth schematic diagram of an embodiment of the present invention, and FIG. 5 is a diagram showing an embodiment of the embodiment of FIG. 3 in which a storage and discharge device (1200) and a manually operated electromechanical device (1400) are disposed in a grip handle (500); The main components include:--Drive motor (100): It is composed of AC or DC commutator brush-type rotary electric motor, including permanent magnet or winding type with cylindrical or tapered or disc type. The excitation commutator motor magnetic field structure (202) and the motor rotating portion (200), and the motor rotating portion (200) is coupled to the motor's rotating housing (201) directly or via an insulating layer (700) to allow external rotation The motor rotating part is used for high-speed and high-inertia rotary driving to facilitate the grinding or cutting of the workpiece by the grinding wheel (800) or the circular saw, and to facilitate the motor heat dissipation. The rotating shaft (300) of the motor rotating part (200) is coaxially arranged. A grinding wheel (800); a casing (400): a structural body composed of a solid material for providing a driving motor (100), and a gripping handle (500) having an integrally extended or combined configuration, characterized by The driving motor (100) is disposed on the casing (400), drives the axial direction of the rotating shaft (300) of the rotating portion (200) of the motor (100), and holds the hand (500) The axial direction is characterized by a 30°~150° angle; ---Handle handle (500): is a hollow body for providing one or more of the following circuit devices, including: power cord (1500) , manual operation of electromechanical devices (1400), storage a discharge device (1200), and a selectively provided control circuit (1300), or an indicator light, a display device, etc., for controlling the operator of the motor-type direct-drive driving of the angle-type hand-held grinder;--manually operating the electromechanical device ( 1400): an interface for a corner-type hand-held grinder for direct or controlled operation of the motor directly or via a control circuit (1300), comprising an electromechanical or solid-state electronic structure as a switch to the motor and / / Speed switching and / or shifting operation function; -- Control circuit (1300): for the implementation of the motor switch and / or speed switching and / or shift operation and / or voltage, current control and protection ;--Wheel wheel (800): It is a rotating shaft (300) that can be set on the motor rotating part (200) for the operator to be driven to rotate or cut the workpiece; -- Cover (1100): It is disposed on the side of the grinding wheel (800) and the rotating part (200) near the handle; the motor of the motor is directly driven to drive the angle grinder to further improve the grinding wheel's ability to grind or cut the workpiece, and further in the motor rotation (200) Driven case with drive motor (100) Motor rotation portion is made of (200) with a drive motor (100) integral to the inertial mass by an increase.

6 is a schematic structural view of an embodiment of the embodiment of FIG. 2 with an inertia flywheel added; FIG. 6 is similar to the structure of FIG. 2, and is characterized by a ring between the motor rotating portion (200) and the grinding wheel (800). The inertial body (1000) is provided, and the rotating portion of the rotating motor portion with high inertia is used for high-speed and high-inertial rotation to facilitate the grinding or cutting of the workpiece and the heat dissipation of the motor. The shaft (300) is for coaxially setting the grinding wheel (800).

7 is a schematic structural view of an embodiment of the embodiment of FIG. 3 with an inertia flywheel added; FIG. 7 is characterized by the structure of FIG. (200) The inertia body (1000) is arranged between the grinding wheel and the grinding wheel (800), so that the rotating motor of the rotating motor with a high inertia amount is driven by the high speed and high inertia to facilitate grinding of the grinding wheel (800) or the circular saw. Or the work of cutting off the workpiece and the heat dissipation of the motor, the rotating shaft (300) of the motor rotating portion (200) is provided for coaxially setting the grinding wheel (800).

FIG. 8 is a schematic structural view of an embodiment of the embodiment of FIG. 4 with an inertia flywheel; FIG. 8 is similar to the structure of FIG. 4, and is characterized by a ring between the motor rotating portion (200) and the grinding wheel (800). The inertial body (1000) is provided, so that the rotary motor of the high-inertia external rotation motor is driven by the high-speed and high-inertial rotation to facilitate the grinding or cutting of the workpiece by the grinding wheel (800) or the circular saw, and the heat dissipation of the motor is facilitated. The rotating shaft (300) of the motor rotating portion (200) is for coaxially setting the grinding wheel (800).

9 is a schematic structural view of an embodiment of the embodiment of FIG. 5 with an inertia flywheel added; FIG. 9 is similar to the structure of FIG. 5, and is characterized by a ring between the motor rotating portion (200) and the grinding wheel (800). The inertia body (1000) is provided; further, the high-inertia amount of the rotary motor rotating portion is used for high-speed and high-inertial rotary driving to facilitate grinding or cutting of the workpiece by the grinding wheel (800) or the circular saw and to facilitate heat dissipation of the motor. The rotating shaft (300) of the motor rotating portion (200) is provided for coaxially setting the grinding wheel (800); in the rotary angle hand-held grinding machine driven by the motor, the rotating outer casing (201) or the inertial body of the external rotating motor ( 1000), may further be formed with a fin structure (210) to enhance the heat dissipation effect in the rotation.

The invention may further be composed of an inner-rotating flat type, a disc type or a short cylindrical type AC or DC commutator motor, which is an inner-rotating flat type, a disc type or a shorter cylinder. Type of electric motor to reduce the interference in the work space, and make the drive motor have better heat dissipation environment; its structure is as follows: FIG. 10 is a schematic diagram showing an embodiment of a commutator motor in which the casing and the inner-rotating motor are co-constructed; the composition is as follows: - a commutator drive motor (150): for alternating current or The DC commutator motor is a flat-type, disc-type or short cylindrical commutator drive motor (150) having an internal rotation type, comprising a static portion (151) and having a commutator ( 153) a motor rotating portion (152) and a brush group (154), wherein the rotating portion (300) of the stationary portion (151) and the motor rotating portion (152) and one end of the bearing are directly disposed in the casing (400), and the inner turn The other exposed end of the rotating shaft (300) of the rotating portion (152) of the commutator drive motor (150) is provided for coaxially setting the grinding wheel (800) or the circular saw for the internal rotating motor rotating portion (152). a driven grinding wheel (800) or a circular saw for grinding or cutting a workpiece; - a casing (400): a structural body composed of a solid material for providing a commutator drive motor (150), and The grip handle (500) integrally formed or combined, the static part (151) of the commutator drive motor (150) and the rotating shaft (300) of the rotating part (152) and one end of the bearing are coupled to the casing (40) 0), the axial direction of the rotating shaft (300) of the rotating portion (152) of the commutator driving motor (150) is characterized by a folding angle of 30° to 150° with respect to the axial direction of the grip handle (500); Grip handle (500): is a hollow body for providing one or more of the following circuit devices, including: power line (1500), manual operation electromechanical device (1400), storage and discharge device (1200), selective setting Control circuit (1300), or indicator light, display device, etc., for controlling the operator of the angle-type hand-held grinder driven by the commutator drive motor (150); - Manually operated electromechanical device (1400): for direct Or through the control circuit (1300) as an operator operating the commutator drive motor (150) directly connected to the corner of the hand-held grinder interface, including an electromechanical or solid-state electronic structure, as a switch to the motor and / Or the operation function of the speed switching and/or shifting; -- Control circuit (1300): for the operation and/or voltage and current control and protection of the commutator drive motor (150) for switching and / or speed switching and / or shifting; - grinding wheel (800 ): is a shaft (300) that can be placed on the motor rotating portion (152) for being driven by a rotary drive for grinding or cutting the workpiece; -- blade (900): for setting on the grinding wheel (800) Between the outer casing of the commutator drive motor (150) to facilitate the heat dissipation of the motor; - the cover (1100): is disposed on the side of the grinding wheel (800) and the motor rotating portion (152) near the handle; The utility model is characterized in that the casing (400) is coupled to the static portion of the commutator drive motor (150), and the other supporting side of the bearing as the rotating shaft (300) for driving the inner rotation type motor rotating portion (152), and the commutator is The inside of the drive motor (150) is open-connected to the inside of the casing (400), and the internal heat accumulated by the commutator drive motor (150) can flow smoothly to the casing (400). Between the inner part of the motor and the inner side of the motor, and between the grinding wheel (800) and the outer casing of the commutator drive motor (150), the leaves are arranged on the rotating shaft (300) (900), for pumping the gas flow to facilitate cooling by outside motors.

Figure 11 is a second embodiment of the commutator motor constructed by the casing and the inner-rotating motor of the present invention; the structure is as follows: - the commutator drive motor (150): is an alternating current or direct current commutator The motor is composed of a flat type, a disc type or a short cylindrical type commutator motor, and includes a static portion (151) and a motor having a commutator (153). a portion (152) and a brush set (154), wherein the static portion (151) is directly disposed on the casing (400), and the exposed end of one of the rotating shafts (300) of the inner rotating motor rotating portion (152) is provided with a coaxially disposed grinding wheel ( 800) or a circular saw, for grinding or cutting the workpiece by a grinding wheel (800) or a circular saw driven by the inner motor type rotating portion (152); - Case (400): a structure composed of a solid material for providing a commutator drive motor (150), and a grip handle (500) having an integrally extended or combined configuration, a commutator drive motor ( 150) The static portion is coupled to the casing (400), and the axial direction of the rotating shaft (300) of the rotating portion (152) of the commutator drive motor (150) is 30° to the axial direction of the grip handle (500). The folding angle of 150° is characteristic;--handle handle (500): is a hollow body for providing one or more of the following circuit devices, including: power line (1500), manual operation electromechanical device (1400), storage A discharge device (1200), a selectively arranged control circuit (1300), or an indicator light, a display device, etc., for operating a rotary angle type hand-held grinder driven by a commutator drive motor (150); Operating electromechanical device (1400): for the direct or controlled circuit (1300) as an operator operating the commutator drive motor (150) direct junction driven corner hand grinder interface, including electromechanical or solid state electronic structure Constructed as a function of switching the motor and/or switching the speed and/or shifting speed -- Control circuit (1300): for the operation and/or voltage and current control and protection of the commutator drive motor (150) for switching and / or speed switching and / or shifting; - grinding wheel (800 ): is a shaft (300) that can be placed on the motor rotating portion (152) for being driven by a rotary drive for grinding or cutting the workpiece; -- blade (900): for setting on the grinding wheel (800) Between the outer casing of the commutator drive motor (150) to facilitate the heat dissipation of the motor; - the cover (1100): is disposed on the side of the grinding wheel (800) and the motor rotating portion (152) near the handle; The utility model is characterized in that a static part of the commutator drive motor (150) is combined by the casing (400), and a blade is arranged on the rotating shaft (300) between the grinding wheel (800) and the casing outside the commutator drive motor (150). (900), for pumping airflow to facilitate the external heat dissipation of the motor.

The commutator motor (150) described in FIG. 11 further can provide a venting hole (250) in the casing of the commutator drive motor (150) disposed inside the casing (400) to facilitate the commutator drive motor. (150) The internal heat accumulation is convected by the space of the casing (400), and then the heat is radiated by the casing (400).

The invention may further comprise an inner-rotating flat type, a disc type or a short cylindrical AC or DC synchronous or asynchronous brushless motor, which is a flat type, a disc type or a shorter type which is internally rotated. The cylindrical electric motor is used to reduce the interference in the working space and to make the driving motor have better heat dissipation environment; as shown in FIG. 12, the invention is implemented by the common structure of the casing and the inner rotating brushless motor. One of the examples is as follows: - Brushless motor (160): It is composed of an AC or DC synchronous or special brushless motor, which is a flat type, a disc type or a shorter one. The cylindrical brushless motor includes a static portion (161) and a motor rotating portion (162), wherein the rotating portion (300) of the stationary portion (161) and the motor rotating portion (162) and one end of the bearing are directly disposed in the casing (400), the other end of the rotating shaft (300) of the rotating part (162) of the inner-rotating brushless motor is provided for coaxially setting the grinding wheel (800) or the circular saw for the inner-turning motor rotating part (162) The driven grinding wheel (800) or the circular saw is used as an operator for grinding or cutting the workpiece; - the casing (400): a structure composed of solid materials for A brushless motor (160), and a grip handle (500) integrally formed or combined, a static portion (161) of the brushless motor (160), a rotating shaft (300) of the rotating portion (162), and one end of the bearing Combined with the casing (400), the axial direction of the rotating shaft (300) of the rotating portion (162) of the brushless motor (160) is characterized by a 30° to 150° angle with the axial direction of the holding handle (500). ;--handle handle (500): is a hollow body for providing one or more of the following circuit devices, including: power line (1500), manual operation electromechanical device (1400), storage and discharge device (1200), selection Control circuit (1300), or indicator light, display device Etc., for the operation of a rotary hand-held grinder for driving a brushless motor (160) with a direct knot drive; - Manually operated electromechanical device (1400): for operating the brushless motor as an operator directly or via a control circuit (1300) (160) The interface of the direct-drive driven corner grinder, consisting of an electromechanical or solid-state electronic structure, as a function of switching and/or speed switching and/or shifting of the motor;--control circuit (1300): for the control and protection of the brushless motor (160) for switching and / or speed switching and / or shifting operation and / or voltage, current; - grinding wheel (800): for the set The rotating shaft (300) of the rotating portion (162) of the brushless motor (160) for the operator who is driven to rotate or cut the workpiece; - blade (900): for the grinding wheel (800) Between the outer casing of the brushless motor (160) and the heat sink of the motor; the cover (1100): is disposed on the side of the grinding wheel (800) and the motor rotating portion (162) near the handle; The housing (400) is coupled to the static portion of the brushless motor (160), and the rotating shaft (300) of the rotating portion (162) that drives the internal rotary brushless motor The other supporting side of the bearing, and the inside of the brushless motor (160) and the inside of the casing (400) are open-connected, and the internal heat accumulated by the brushless motor (160) can be operated. Smoothly flowing between the casing (400) and the inside of the motor to facilitate heat dissipation, and between the grinding wheel (800) and the casing outside the motor (160), the blade (900) is disposed on the rotating shaft (300) for the pump The moving airflow is beneficial to the external heat sink of the motor.

Figure 13 is a second embodiment of the present invention in which the casing and the inner-rotating brushless motor are co-constructed; the structure is as follows: - a brushless motor (160): a brushless motor synchronized or asynchronous by alternating current or direct current The utility model is composed of a flat type, a disk type or a short cylindrical type brushless motor, which comprises a static part (161) and a motor rotating part (162), wherein the static part (161) straight Connected to the casing (400), one of the rotating shafts (300) of the rotating part (162) of the inner-rotating brushless motor (160) is provided with a grinding wheel (800) or a circular saw for coaxial rotation. A grinding wheel (800) driven by a motor rotating portion (162) or a circular saw for grinding or cutting a workpiece; - a casing (400): a structural body composed of a solid material for providing a brushless a motor (160), and a grip handle (500) integrally formed or combined, the static portion of the brushless motor (160) is coupled to the casing (400), and the rotating portion (162) of the brushless motor (160) The axial direction of the rotating shaft (300) is characterized by a 30°~150° angle with the axial direction of the grip handle (500); the grip handle (500) is a hollow body for setting one or the other The above circuit device includes: a power line (1500), a manually operated electromechanical device (1400), a storage and discharge device (1200), a selectively set control circuit (1300), or an indicator light, a display device, etc., for control The brush motor (160) is a driver of a corner-type hand-held grinder driven by a straight knot; a manually operated electromechanical device (1400): a brushless motor for direct or controlled circuit (1300) as an operator (160) The interface of the direct-drive driven corner grinder, consisting of an electromechanical or solid-state electronic structure, as a function of switching and/or speed switching and/or shifting of the motor;--control circuit (1300): for the control and protection of the brushless motor (160) for switching and / or speed switching and / or shifting operation and / or voltage, current; - grinding wheel (800): for the set The rotating shaft (300) of the rotating portion (162) of the brushless motor (160) for the operator who is driven to rotate or cut the workpiece; - blade (900): for the grinding wheel (800) Between the outer casing of the brushless motor (160) and the heat sink of the motor; the cover (1100): is disposed on the side of the grinding wheel (800) and the motor rotating portion (162) near the handle; The casing (400) is combined with the static portion of the brushless motor (160), and between the grinding wheel (800) and the casing outside the brushless motor (160), the blade (900) is disposed on the rotating shaft (300) for Pumping airflow to help the motor dissipate heat.

The brushless motor (160) described in FIG. 13 further can provide a venting hole (250) in the casing of the brushless motor (160) disposed inside the casing (400) to facilitate the internal product of the brushless motor (160). The heat is convected by the space of the casing (400), and then the heat is radiated by the casing (400).

(150)‧‧‧ commutator drive motor

(151)‧‧‧ commutator drive motor static part

(152)‧‧‧ commutator drive motor turn

(153)‧‧‧ commutator

(154)‧‧‧ brushes group

(300)‧‧‧Motor shaft

(400) ‧ ‧ housing

(500)‧‧‧Hand grip

(800)‧‧‧ grinding wheel

(900)‧‧‧ blades

(1100) ‧ ‧ cover

(1200)‧‧‧Storage and discharge device

(1300)‧‧‧Control circuit

(1400) ‧‧‧Manually operated electromechanical devices

Claims (15)

A motorized direct-drive driven corner grinder includes: a drive motor (100) having an inner casing portion, a motor rotating portion and a rotating outer casing portion around the inner casing portion, and a motor shaft (300) coupling To the rotating outer casing portion 201; a holding handle (500) is fixed to the extension of the inner casing portion, the axial direction of the holding handle (500) is a 30-150° angle to the axial direction of the casing; and the grinding wheel ( 800) and the circular saw is fixed to the motor shaft (300) for rotating the rotary housing 201 and directly driven by the driving motor (100). When the motor is operated, the rotating outer casing portion 201 of the driving motor (100) can be used as a flywheel. Grinding wheel (800) or circular saw rotates. The motorized direct-drive driven corner grinder of the first aspect of the invention, further comprising a cover (1100), which is disposed on the grinding wheel (800) or the circular saw and the rotating outer casing portion 201. Side. The motor-type electromechanical device (1400) of the motor-operated electromechanical device (1400) is a control function of one or more of the following: a switch of a motor and a controller of a motor speed. The motor of the direct-drive type of the hand-held grinder according to the first aspect of the invention, wherein the rotor of the motor is disposed in the rotating outer casing portion 201 of the motor. A motor-type direct-drive driven corner grinder according to the first aspect of the invention, wherein the inner casing portion supports a stator winding. The motor of the direct-drive type of the hand-held grinder according to the first aspect of the invention, wherein the rotor of the motor is integrally co-constructed with the rotary outer casing portion 201 of the motor. A motorized straight-drive driven corner grinding wheel as described in claim 1 The machine wherein the swing housing portion 201 is at a high inertia amount. The motor of the direct-drive type of the hand-held grinder according to the first aspect of the invention, wherein the rotary outer casing portion 201 is co-constructed with the high inertia body. The motor of the direct-drive type of the hand-held grinder according to the first aspect of the invention, wherein the grip handle (500) is a hollow body. A motorized direct drive driven corner grinder according to claim 9 wherein the grip handle (500) includes a manually operated electromechanical device 1400 for driving the motor (100) and supplies electrical energy to the drive motor (100). The storage/discharge device (1200) rotates the motor shaft (300) through a power supply line (1500). A motorized direct drive driven corner grinder as described in claim 10, wherein the grip handle (500) further includes a control circuit (1300) for performing one or more motor control functions including motor on and off, Control and protection of speed change, voltage and current. The motor of the direct-drive type of the hand-held grinder according to claim 11, wherein the motor control function comprises at least one of the following functions: switching, rotating or shifting the motor, controlling voltage and current, and protecting the motor. By. The motor-driven electromechanical device (1400) is a motor-operated electromechanical device (1400) for direct or controlled circuit (1300) as an operator to operate the motor direct-drive driving corner type according to claim 10. The interface of the hand grinder allows the operator to switch the motor and/or switch the speed or shift. The motor of a direct-drive type of a hand-held grinder as described in claim 1, wherein the electric power of the drive motor (100) is supplied by a power cord connected to an external power source. The motor of a direct-drive type of a hand-held grinder as described in claim 1, wherein the power source comprises a storage and discharge device (1200).