CN214255957U - Motor structure and electric tool - Google Patents
Motor structure and electric tool Download PDFInfo
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- CN214255957U CN214255957U CN202023346836.7U CN202023346836U CN214255957U CN 214255957 U CN214255957 U CN 214255957U CN 202023346836 U CN202023346836 U CN 202023346836U CN 214255957 U CN214255957 U CN 214255957U
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Abstract
The utility model relates to the technical field of motors, and provides a motor structure and an electric tool, which comprises a shell, a stator, a rotor and a shunting cover structure, wherein one end of the shell is provided with an air inlet; the stator is embedded in the shell, and a first channel is formed between the shell and the stator; the rotor is embedded in the stator, and a second channel is formed between the stator and the rotor; the shunting cover structure is arranged at the air inlet in the shell, a guide structure is arranged on the outer side wall of the shunting cover structure, a third channel is arranged in the shunting cover structure, and the third channel is communicated with the second channel. The utility model discloses a reposition of redundant personnel cover structure falls into impurity air current and clean air current with the heat dissipation air current to it is leading-in with the impurity air current in the first passageway and with the leading-in second passageway of clean air current through the third channel, thereby realize cooling down stator and rotor, prevent that the impurity air current in the heat dissipation air current from blockking up the second passageway between stator and the rotor, guarantee motor structure's normal operating.
Description
Technical Field
The utility model relates to the technical field of motors, particularly, relate to a motor structure and electric tool.
Background
Electric tool includes motor and fan, the motor is used for driving the fan and rotates, the motor includes the motor casing and sets up in motor casing stator and rotor, the fan can produce the heat dissipation air current when rotating and flow through inside in order to dispel the heat to the motor casing, but can be mingled with the metal dust in the heat dissipation air current usually, these metal dusts can follow the air current and get into in the clearance between stator and the rotor and adsorb on the rotor in getting into the motor casing, thereby block up the clearance between stator and the rotor and cause motor failure, and then influence electric tool's normal use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be among the prior art motor when normal operating, the metal dust in the heat dissipation air current can block up the clearance between stator and the rotor in getting into the motor, and then influences the normal operating of motor.
In order to solve the above problem, the utility model provides a motor structure, include:
the air conditioner comprises a shell, wherein one end of the shell is provided with an air inlet;
the stator is embedded in the shell, and a first channel is formed between the shell and the stator;
the rotor is embedded in the stator, and a second channel is formed between the stator and the rotor;
the air inlet is arranged in the shell, the outer side wall of the flow dividing cover structure is provided with a guide structure, a third channel is arranged inside the flow dividing cover structure and communicated with the second channel, and the flow dividing cover structure is suitable for dividing heat dissipation airflow entering from the air inlet into impurity airflow and clean airflow and guiding the impurity airflow into the first channel and the clean airflow into the third channel.
Therefore, by arranging the guide structure on the outer side wall of the shunting cover structure, after the heat dissipation airflow enters from the air inlet of the shell, vortex flow is generated and divided into impurity airflow and clean airflow through the position between the guide structure of the shunting cover structure and the shell, at the moment, the impurity airflow with metal dust in the heat dissipation airflow directly enters the first channel between the shell and the stator because the mass and inertia of the impurity airflow move downwards along the flow direction of the heat dissipation airflow along the guide structure due to large mass and inertia so as to cool the outside of the stator, the clean airflow moves upwards along the guide structure due to no metal dust or less metal dust particles and enters the second channel between the stator and the rotor through the third channel, so that the inside of the stator and the rotor are cooled, and the impurity airflow in the heat dissipation airflow is prevented from blocking the second channel between the stator and the rotor on the basis of cooling the stator and the rotor of the motor, the normal operation of the motor structure is ensured.
Optionally, the guide structure includes at least one of an inclined surface, an arc-shaped surface, and an annular flange, and a distance between one end of the guide structure facing the air inlet and the housing is greater than a distance between one end of the guide structure facing away from the air inlet and the housing.
Optionally, the flow dividing cover structure includes a first flow dividing cover and a second flow dividing cover, an installation cavity is provided on the second flow dividing cover, the first flow dividing cover is suitable for being embedded into the installation cavity, the guide structure is provided on an outer side wall of the second flow dividing cover, and the third channel is formed between the first flow dividing cover and the second flow dividing cover.
Optionally, the second reposition of redundant personnel cover is the loop configuration, just the vertical cross-section of second reposition of redundant personnel cover is from the structure of supreme convergent down, first reposition of redundant personnel cover is loudspeaker column structure, just first reposition of redundant personnel cover is from the structure of supreme convergent down, the outer wall of first reposition of redundant personnel cover with enclose between the inner wall of second reposition of redundant personnel cover and form the third passageway.
Optionally, the first flow-dividing cap and the second flow-dividing cap are integrally formed or detachably connected.
Optionally, the air conditioner further comprises a rotor shaft and a fan, wherein the rotor shaft is embedded in the rotor, and one end of the rotor shaft, which deviates from the air inlet, is connected with the fan.
Optionally, the flow dividing cover structure is provided with a through hole, and one end of the rotor shaft facing the air inlet penetrates through the through hole.
Optionally, the flow dividing cover structure is disposed between the housing and an end of the stator facing the air inlet via a mounting structure.
Optionally, the mounting structure includes at least one connecting piece, at least one of the connecting pieces is disposed on the second flow-dividing cover at intervals, and one end of the connecting piece, which is away from the second flow-dividing cover, is connected to the housing or the stator.
Optionally, one end of the second shunting cover, which faces away from the air inlet, is provided with an annular groove, the mounting structure includes the annular groove, and the second shunting cover is suitable for being adsorbed on one end of the stator, which faces the air inlet, through the annular groove.
The utility model also provides an electric tool, include the instrument body and as aforesaid motor structure, motor structure set up in on the instrument body, electric tool's beneficial effect with motor structure's beneficial effect is no longer repeated here.
Drawings
Fig. 1 is a schematic structural diagram of a motor structure in an embodiment of the present invention;
fig. 2 is an explosion structure diagram of the motor structure in the embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of a motor structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the shunt cover structure in the embodiment of the present invention.
Description of reference numerals:
1-a housing; 11-an air inlet; 2-a stator; 3-a rotor; 4-a shunt shield structure; 41-a first flow dividing hood; 42-a second flow-dividing hood; 421-an annular groove; 43-a third channel; 5-a rotor shaft; 6-a fan; 7-a second channel; 8-fan mounting seat.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the terms "an example," "one example," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example or implementation is included in at least one example or implementation of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.
In order to solve the above technical problem, as shown in fig. 1, fig. 2 and fig. 3, an embodiment of the present invention provides a motor structure, including:
the air conditioner comprises a shell 1, wherein one end of the shell 1 is provided with an air inlet 11;
the stator 2 is embedded in the shell 1, and a first channel is formed between the shell 1 and the stator 2;
the rotor 3 is embedded in the stator 2, and a second channel 7 is formed between the stator 2 and the rotor 3;
the air conditioner comprises a flow dividing cover structure 4, wherein the flow dividing cover structure 4 is arranged at the air inlet 11 in the shell 1, a guide structure is arranged on the outer side wall of the flow dividing cover structure 4, a third channel 43 is arranged inside the flow dividing cover structure 4, the third channel 43 is communicated with the second channel 7, and the flow dividing cover structure 4 is suitable for dividing heat dissipation airflow entering from the air inlet 11 into impurity airflow and clean airflow and guiding the impurity airflow into the first channel and guiding the clean airflow into the third channel 43.
It should be noted that, because the housing 1 is a cylindrical structure, the stator 2 and the rotor 3 are both cylindrical structures with cavities inside, the flow dividing cover structure 4 is disposed between the air inlet 11 of the housing 1 and one end of the stator 2 facing the air inlet 11, the outer side wall of the flow dividing cover structure 4 is provided with a guide structure, and a space enclosed between one end of the guide structure facing the air inlet 11 and one end of the guide structure facing away from the air inlet 11 and the inner side wall of the housing 1 is the air inlet 11, the first channel and the second channel 7 are all cylindrical annular channels, the air inlet 11 is communicated with the first channel and is located on the same central axis, and the air inlet 11 is communicated with the third channel 43 of the flow dividing cover structure 4; the upper end face and the lower end face of the shunting cover are both circular rings, and the guide structure is arranged on the outer side wall of the shunting cover structure 4, so that after heat dissipation airflow enters from the air inlet 11 of the shell 1, vortex flow is generated at a position between the guide structure of the shunting cover structure 4 and the shell 1 and is divided into impurity airflow and clean airflow, at the moment, the impurity airflow with metal dust in the heat dissipation airflow directly enters a first channel between the shell 1 and the stator 2 along the guide structure and along the original flowing direction of the heat dissipation airflow due to large mass and inertia, so as to cool the outside of the stator 2, the clean airflow turns upwards along the guide structure due to no metal dust or less metal dust particles due to small mass and light vortex flow, and enters a second channel 7 between the stator 2 and the rotor 3 through a third channel 43, so as to cool the inside of the stator 2 and the rotor 3, the normal operation of the motor structure is ensured by preventing the impurity airflow in the heat dissipation airflow from blocking the second channel 7 between the stator 2 and the rotor 3 on the basis of cooling the stator 2 and the rotor 3 of the motor.
In this embodiment, the motor structure further includes an installation rib integrally or detachably arranged on the outer side wall of the stator 2, the inner side wall of the housing 1 is provided with installation clamping positions, the number and the size of the installation rib are matched with those of the installation clamping positions, and when the stator 2 is embedded and arranged in the housing 1, the installation rib is embedded in the installation clamping positions, so that the stator 2 is positioned and arranged, and the stator 2 is prevented from rotating relative to the housing 1 in the housing 1; when the outside installation muscle of stator 2 inlays and locates in the installation screens of shell 1, fix through the bolt, further play the fixed mounting of stator 2, prevent that stator 2 from rocking. The rotor 3 is embedded in the stator 2, and its specific installation structure is the prior art and will not be described in detail here.
In this embodiment, as shown in fig. 3, the third channel 43 is a pointed channel, that is, one end of the pointed channel is communicated with the air inlet 11, and the other end is communicated with the second channel 7, the heat dissipation air flow enters from the air inlet 11 and flows to a position between the bottom end of the guiding structure and the housing 1 to generate a vortex, at this time, the clean air without metal dust or with a small amount of metal dust moves upward along the guiding structure, first enters from one end of the pointed channel close to the housing 1 and moves upward to the top end of the pointed structure, then continues to flow along the pointed channel and continues to flow from one end of the pointed channel away from the housing 1, and finally enters into the second channel 7 between the stator 2 and the rotor 3, so as to cool and dissipate heat of the interior of the stator 2 and the rotor 3.
In an embodiment of the present invention, the guiding structure includes at least one of an inclined plane, an arc-shaped surface and an annular flange, and the guiding structure faces towards one end of the air inlet 11 and a distance between the shells 1 is greater than the guiding structure deviates from one end of the air inlet 11 and a distance between the shells 1.
It should be noted that, the distance between one end of the guide structure of the flow dividing cover structure 4 facing the air inlet 11 and the inner side wall of the housing 1 is greater than the distance between one end of the guide structure facing away from the air inlet 11 and the inner side wall of the housing 1; when the guide structure is an inclined plane, the flow dividing cover structure 4 is a circular truncated cone structure with a third channel 43 arranged inside, the inclined plane is a circumferential side wall of the circular truncated cone structure, and the distance between one end of the inclined plane facing the air inlet 11 and one end of the inclined plane departing from the air inlet 11 and the inner side wall of the shell 1 is gradually reduced; for another example, when the guiding structure is an arc surface, the arc surface is a circumferential side wall of the circular truncated cone structure, the arc surface is bent towards the vertical central axis of the housing 1 or is bent away from the vertical central axis of the housing 1, and at this time, the distance between one end of the arc surface facing the air inlet 11 and one end of the arc surface departing from the air inlet 11 and the inner side wall of the housing 1 respectively decreases; when the guide structure is an arc-shaped flanging, namely an annular flanging is arranged at the circumferential lower end of the outer side wall of the shunting cover structure 4, the outer side wall of the shunting cover structure 4 can be an inclined surface or an arc surface, the annular flanging is arranged at the lower end of the inclined surface or the arc surface, and the annular flanging is gradually bent upwards from the lower end of the outer side wall of the shunting cover structure 4; the guide structure comprises at least one of an inclined plane, an arc-shaped surface and an annular flanging, so that after entering from the air inlet 11 of the shell 1, the heat dissipation airflow can flow to a position between the guide structure and the inner side wall of the shell 1 along the outer side wall of the flow dividing cover structure 4 to generate a vortex due to the fact that the size or the channel is reduced, a gap is reserved between the bottom end of the guide structure and the shell 1, so that the impurity airflow with metal dust particles in the heat dissipation airflow directly enters the first channel along the original flowing direction of the heat dissipation airflow due to large mass and inertia, the stator 2 of the motor is cooled, the clean airflow with little or no metal dust turns to move upwards along the guide structure at the position between the guide structure and the inner side wall of the shell due to light mass and enters the third channel 43 along the vortex, and enters the second channel 7 between the stator 2 and the rotor 3 along the third channel 43, thereby cool down the inside of stator 2 and the outside of rotor 3, prevent simultaneously that the metal dust from adsorbing on the surface of rotor 3 and blockking up second passageway 7 between stator 2 and the rotor 3, and then guarantee motor structure normal operating.
In an embodiment of the present invention, as shown in fig. 2, fig. 3 and fig. 4, the shunt cover structure 4 includes a first shunt cover 41 and a second shunt cover 42, an installation cavity is provided on the second shunt cover 42, the first shunt cover 41 is suitable for being embedded into the installation cavity, a guiding structure is provided on the outer sidewall of the second shunt cover 42, the first shunt cover 41 and the second shunt cover 42 form the third channel 43 therebetween.
It should be noted that, the first flow dividing cover 41 is a funnel-shaped structure, the second flow dividing cover 42 is provided with an installation cavity, and the installation cavity is matched with the structure of the first flow dividing cover 41, when in installation, the first flow dividing cover 41 is suitable for being embedded into the installation cavity of the second flow dividing cover 42, at this time, the outer side wall of the first flow dividing cover 41 is not completely contacted with the inner side wall of the second flow dividing cover 42, and a third channel 43 is formed between the two; when the first shunting cover 41 is embedded and installed in the installation cavity of the second shunting cover 42, the upper end surface of the first shunting cover 41 is tightly attached to the upper end surface of the second shunting cover 42, so that the height and the volume of the shunting cover structure 4 are reduced, and the volume and the occupied space of the motor structure are further reduced.
In the present embodiment, the flow dividing cover structure 4 is disposed inside the housing 1 between the air inlet 11 and the end of the stator 2 facing the air inlet 11, so as to fully utilize the space between the housing 1 and the end of the stator 2 facing the air inlet 11; shunt shield structure 4 adopts non-magnetic conduction and high temperature resistant material to make, if can adopt materials such as rubber, plastics, copper or pottery, thereby effectual shunt shield structure 4 of avoiding magnetic conduction material to make causes the interference to motor structure's stator 2 and rotor 3's operation, also prevent simultaneously that motor structure's stator 2 and rotor 3 from transmitting the high temperature that produces when the operation for shunt shield structure 4 and shunt shield structure 4's ageing with higher speed, and then guaranteed shunt shield structure 4's life.
In an embodiment of the present invention, the second shunt cover 42 is an annular structure, and the vertical cross section of the second shunt cover 42 is a structure tapered from bottom to top, the first shunt cover 41 is a horn-shaped structure, and the first shunt cover 41 is a structure tapered from top to bottom, the outer wall of the first shunt cover 41 and the inner wall of the second shunt cover 42 surround and form the third channel 43.
It should be noted that, as shown in fig. 3, the vertical cross section of the second flow dividing cover 42 is a structure that decreases from bottom to top, wherein the vertical cross section of the second flow dividing cover 42 corresponding to the Z axis of the coordinate system in fig. 3 is the vertical cross section of the second flow dividing cover 42, the second flow dividing cover 42 is provided with an installation cavity, the installation cavity is used for installing the first flow dividing cover 42, and the installation cavity is matched with the first flow dividing cover 41 in shape and size; the first shunting cover 41 is arranged to be of a horn-shaped structure, and the first shunting cover 41 is of a structure which is gradually reduced from top to bottom, so that when the first shunting cover 41 is installed at the installation cavity of the second shunting cover 42, a third channel is formed between the outer side wall of the first shunting cover 41 and the inner side wall of the second shunting cover 42 in a surrounding mode, the third channel 43 is provided with two ends, the two ends of the third channel 43 are respectively communicated with the air inlet 11 and the second channel, the clean air flow in the heat dissipation air flow entering from the air inlet 11 turns to move upwards along the guide structure between the guide structure and the shell 1 due to the turbine, enters from one end of the third channel 43 and enters the second channel between the stator 2 and the rotor 3 from the other end, and the interior of the stator 2 and the interior of the rotor 3 are cooled by the clean air flow.
In an embodiment of the present invention, the first shunt shield 41 and the second shunt shield 42 are integrally formed or detachably connected.
It should be noted that, when the first flow dividing cover 41 and the second flow dividing cover 42 are integrally formed and connected, for example, the first flow dividing cover 41 and the second flow dividing cover 42 are connected by a plurality of connecting ribs, so that interference to the third channel 43 is not caused, that is, the first flow dividing cover 41 and the second flow dividing cover 42 are integrally formed during manufacturing, so as to ensure the mechanical strength of the flow dividing cover structure 4 and prevent the flow of the heat dissipating air from being blown for a long time to damage or deform; when first reposition of redundant personnel cover 41 and second reposition of redundant personnel cover 42 are for dismantling the connection, if the lateral wall of first reposition of redundant personnel cover 41 sets up first plug connector, the inside wall of second reposition of redundant personnel cover 42 is equipped with the second plug connector, thereby first reposition of redundant personnel cover 41 is pegged graft through first plug connector and second plug connector and is realized demountable installation in the installation cavity of second reposition of redundant personnel cover 42, the quantity and the shape phase-match of first plug connector and second plug connector, when first plug connector is for inserting the post, the second plug connector is the slot, when first plug connector is the slot, the second plug connector is for inserting the post, can dismantle the connection through first reposition of redundant personnel cover 41 and second reposition of redundant personnel cover 42, thereby not only realize the quick assembly disassembly of first reposition of redundant personnel cover 41 and second reposition of redundant personnel cover 42, and can change in time when first reposition of redundant personnel cover 41 or second reposition of redundant personnel cover 42 use impaired back for a long time, in order to save cost.
In an embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the motor structure further includes a rotor shaft 5 and a fan 6, the rotor shaft 5 is embedded in the rotor 3, and the rotor shaft 5 deviates from one end of the air inlet 11 and is connected to the fan 6.
It should be noted that an air outlet is arranged at the other end of the housing 1, the air inlet 11 and the air outlet are arranged oppositely, and the first channel and the second channel 7 are also communicated with the air outlet; the motor structure comprises a rotor shaft 5 and a fan 6, the rotor shaft 5 is embedded in a stator 2, the fan 6 is sleeved at one end of the rotor shaft 5, which is far away from an air inlet 11, the rotor 3 is suitable for driving the rotor 3 and driving the fan 6 to rotate when working, when the fan 6 rotates, negative pressure is generated in a shell 1 of the motor structure, further, heat dissipation air flow outside the shell 1 enters from the air inlet 11 of the shell 1, when the heat dissipation air flow passes through a position between a guide structure of a flow dividing cover structure 4 and the shell 1, vortex is generated and is divided into impurity air flow and clean air flow, at the moment, the impurity air flow with metal dust in the heat dissipation air flow directly enters a first channel between the shell 1 and the stator 2 due to large mass and inertia and is discharged from an air outlet, so as to cool the outside of the stator 2, the clean air flow moves upwards along the guide structure and firstly enters a third channel 43 and flows into a second channel 7 between the stator 2 and the rotor 3, thereby carry out cooling treatment to the inside of stator 2 and the outside of rotor 3, clean air current will be discharged from the air outlet at last.
In this embodiment, the motor structure further includes a fan mounting base 8, wherein the fan mounting base 8 covers the outside of the fan 6 and is mounted on the inner side wall of the housing 1; the fan mounting base 8 is used for mounting the fan 6 and provides a mounting base for mounting the fan 6.
In an embodiment of the present invention, the flow dividing cover structure 4 is provided with a through hole, and the through hole is penetrated by the end of the rotor shaft 5 facing the air inlet 11.
It should be noted that a through hole is formed in the center of the first flow dividing cover 41 and the second flow dividing cover 42 in the flow dividing cover structure 4, and one end of the rotor shaft 5 facing the air inlet 11 passes through the through hole, so as to prevent the flow dividing cover structure 4 from interfering with the installation and rotation of the rotor shaft 5.
In an embodiment of the present invention, the shunting cover structure 4 is arranged by a mounting structure between the housing 1 and the end of the stator 2 facing the air inlet 11.
It should be noted that, the motor structure further includes a mounting structure, wherein, the shunting cover structure 4 is disposed between one end of the housing 1 facing the air inlet 11 and one end of the stator 2 facing the air inlet 11 through the mounting structure, and compared with the prior art that the heat dissipation airflow with metal dust enters the stator 2 and blocks the passage between the stator 2 and the rotor 3, when the heat dissipation airflow enters the housing 1 from the air inlet 11, the heat dissipation airflow will be firstly shunted into the impurity airflow and the clean airflow through the guiding structure of the shunting cover structure 4 and respectively enters the first passage and the second passage 7, at this time, because the shunting cover structure 4 is mounted in one end of the housing 1 facing the air inlet 11 through the mounting structure, the shunting cover structure 4 is prevented from shaking, and the cooling effect on the stator 2 and the rotor 3 can also be achieved.
In an embodiment of the present invention, the mounting structure comprises at least one connecting member (not shown in the figure), at least one of the connecting members is arranged on the second shunt cover 42 at intervals, and one end of the connecting member departing from the second shunt cover 42 is connected with the housing 1 or the stator 2.
It should be noted that, when the number of the connecting members is one, the connecting members are in a cylindrical structure, the cylindrical structure may be disposed on the circumferential outer sidewall or the bottom end of the second shunting cover 42, when the cylindrical structure is disposed on the outer sidewall of the second shunting cover 42, an end of the cylindrical structure departing from the second shunting cover 42 is connected to the inner sidewall of the housing 1, and when the cylindrical structure is disposed at the bottom end of the second shunting cover 42, an end of the cylindrical structure departing from the second shunting cover 42 is connected to an end of the stator 2 facing the air inlet 11; when the quantity of connecting piece is more than two, the connecting piece is spliced pole or connecting rod this moment, a plurality of connecting piece intervals set up in the circumference lateral wall and/or the bottom of second reposition of redundant personnel cover 42, set up when a plurality of connecting piece intervals are on the circumference lateral wall of second reposition of redundant personnel cover 42, the connecting piece deviates from the one end of second reposition of redundant personnel cover 42 and is connected with the inside wall of shell 1, set up when the bottom of second reposition of redundant personnel cover 42 when a plurality of connecting piece intervals, the connecting piece deviates from the one end and the stator 2 of second reposition of redundant personnel cover 42 and is connected, thereby realize reposition of redundant personnel cover structure 4 and install steadily on shell 1 or stator 2 through mounting structure.
In an embodiment of the present invention, as shown in fig. 4, the one end of the second shunting cover 42 departing from the air inlet 11 is provided with an annular groove 421, the mounting structure includes the annular groove 421, and the second shunting cover 42 is adapted to pass through the annular groove 421 and be adsorbed on the one end of the stator 2 facing the air inlet 11.
It should be noted that the second shunting cover 42 is a hollow structure, that is, an annular groove 421 is formed in one end of the second shunting cover 42 away from the air inlet 11 as the bottom end of the second shunting cover 42, so that a cavity is formed in the bottom end of the second shunting cover 42, when the shunting cover structure 4 is made of a flexible and high-temperature-resistant material, when the second shunting cover 42 is mounted on the stator 2, the second shunting cover 42 is pressed to extrude air in the annular groove 421, so that the second shunting cover 42 is adsorbed on one end of the stator 2 facing the air inlet 11 through the annular groove 421, and thus the second shunting cover 42 is rapidly mounted or dismounted.
Another embodiment of the present invention provides an electric tool, which includes a tool body and a motor structure as described in the above embodiments, wherein the motor structure is disposed on the tool body.
The electric tool includes, but is not limited to, an electric pruning shears, an electric drill, an electric wrench, an electric screwdriver, an electric hammer, an electric impact drill, an electric planer, an electric grinder, etc., and the tool body is a main structure of the electric tool, and the motor structure is disposed on the tool body.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.
Claims (10)
1. An electric machine construction, comprising:
the air conditioner comprises a shell (1), wherein one end of the shell (1) is provided with an air inlet (11);
the stator (2) is embedded in the shell (1), and a first channel is formed between the shell (1) and the stator (2);
the rotor (3) is embedded in the stator (2), and a second channel (7) is formed between the stator (2) and the rotor (3);
reposition of redundant personnel cover structure (4), reposition of redundant personnel cover structure (4) set up in shell (1) air intake (11) department, the lateral wall of reposition of redundant personnel cover structure (4) is equipped with guide structure, the inside of reposition of redundant personnel cover structure (4) is equipped with third passageway (43), third passageway (43) with second passageway (7) intercommunication, reposition of redundant personnel cover structure (4) are suitable for will follow the heat dissipation air current that air intake (11) got into divides into impurity air current and clean air current, and will the impurity air current is leading-in first passageway and with clean air current is leading-in the third passageway (43).
2. The motor structure according to claim 1, characterized in that the guiding structure comprises at least one of a slope, an arc and an annular flange, and the distance between the end of the guiding structure facing the air inlet (11) and the housing (1) is greater than the distance between the end of the guiding structure facing away from the air inlet (11) and the housing (1).
3. The machine structure according to claim 1 or 2, characterized in that the shunt shield structure (4) comprises a first shunt shield (41) and a second shunt shield (42), a mounting cavity is provided on the second shunt shield (42), the first shunt shield (41) is adapted to be embedded in the mounting cavity, the guiding structure is provided on an outer side wall of the second shunt shield (42), and the third channel (43) is formed between the first shunt shield (41) and the second shunt shield (42).
4. The motor structure according to claim 3, characterized in that the second shunting cover (42) is an annular structure, the vertical cross section of the second shunting cover (42) is a structure which is tapered from bottom to top, the first shunting cover (41) is a trumpet-shaped structure, the first shunting cover (41) is a structure which is tapered from top to bottom, and the third channel (43) is formed by surrounding the outer wall of the first shunting cover (41) and the inner wall of the second shunting cover (42).
5. The motor structure according to claim 1, further comprising a rotor shaft (5) and a fan (6), wherein the rotor shaft (5) is embedded in the rotor (3), and one end of the rotor shaft (5) facing away from the air inlet (11) is connected with the fan (6).
6. A motor arrangement according to claim 5, characterised in that the flow dividing hood arrangement (4) is provided with a through hole through which the end of the rotor shaft (5) facing the air inlet opening (11) passes.
7. A motor arrangement according to claim 4, characterised in that the flow dividing hood arrangement (4) is arranged by means of a mounting arrangement between the housing (1) and the end of the stator (2) facing the air intake (11).
8. The electric machine arrangement according to claim 7, characterized in that the mounting arrangement comprises at least one connection piece, at least one of which is arranged at intervals on the second shunt shield (42), the end of the connection piece facing away from the second shunt shield (42) being connected to the housing (1) or the stator (2).
9. The electric machine arrangement according to claim 7, characterized in that an end of the second split flow cover (42) facing away from the air inlet (11) is provided with an annular groove (421), and the mounting arrangement comprises the annular groove (421), and the second split flow cover (42) is adapted to be sucked to an end of the stator (2) facing the air inlet (11) via the annular groove (421).
10. A power tool comprising a tool body and a motor structure according to any one of claims 1 to 9, the motor structure being provided on the tool body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023346836.7U CN214255957U (en) | 2020-12-31 | 2020-12-31 | Motor structure and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023346836.7U CN214255957U (en) | 2020-12-31 | 2020-12-31 | Motor structure and electric tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023087493A1 (en) * | 2021-11-19 | 2023-05-25 | 佛山市顺德区雷泰电器制造有限公司 | Air duct assembly and electric hair drier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023087493A1 (en) * | 2021-11-19 | 2023-05-25 | 佛山市顺德区雷泰电器制造有限公司 | Air duct assembly and electric hair drier |
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