Split type brushless motor for electric circular saw

Abstract

The utility model relates to the related technical field of electric circular saws, and discloses a split type brushless motor for an electric circular saw, which is characterized in that an equipment cavity is arranged in a driving motor shell, a motor is arranged in the equipment cavity, a driving rotating shaft is arranged in the motor, the output end of the driving rotating shaft is connected with an air inlet device, and the output end of the driving rotating shaft is connected with an air outlet device. The air inlet device comprises an annular air inlet plate, a first-stage blade and a second-stage blade, an air inlet one-way valve is arranged on the outer side of the annular air inlet plate, the first-stage blade and the second-stage blade are installed at one end of the air inlet one-way valve, the first-stage blade is arranged on the side close to the annular air inlet plate, continuously sucked air is accumulated in the air collecting cavity, and the second-stage blade is arranged on the other side close to the annular air inlet plate. And the air is sprayed to the side surface of the cutting disc and the top of the cutting protection cavity through the air nozzle and the exhaust hole. And after encountering the rotating cutting disc, the jetted airflow diffuses outwards along the outer surface of the cutting disc, so that the surface of the cutting disc is cleaned, and dust is removed from the cutting protection cavity by virtue of centrifugal force.

Description

Technical Field

[0001] The utility model belongs to the technical field related to electric circular saws, and more specifically, relates to a split-type brushless motor for an electric circular saw. Background Art

[0002] An electric circular saw is a common power tool primarily used for cutting materials such as wood and plastic. Its main feature is a circular saw blade that rotates at high speed via an electric motor, enabling efficient and precise cutting. Electric circular saws are widely used in furniture manufacturing, construction, home renovation, and other fields. When using existing electric circular saws, wood chips can easily enter the motor or accumulate around it, affecting the motor's heat dissipation and causing it to overheat. In severe cases, this can damage the motor. Excessive wood chips can also prevent the protective cover from fully closing, exposing the saw blade and increasing the risk of accidental contact with the saw blade.

[0003] Therefore, in view of this, the existing structure and defects are studied and improved, and a split brushless motor for an electric circular saw is provided, in order to achieve the purpose of having more practical value. Utility Model Content

[0004] The utility model provides a split-type brushless motor for an electric circular saw, which is used to overcome the above-mentioned defects in the prior art.

[0005] The purpose and function of the split-type brushless motor for an electric circular saw of the present invention are achieved by the following specific technical means:

[0006] and a control panel that is located adjacent to the control panel, wherein the control panel has a control panel that is located adjacent to the control panel, and a control panel is located adjacent to the control panel.

[0007] According to a further technical solution, an air inlet cavity is provided inside the annular air inlet plate, and an air collecting cavity is provided inside the air collecting box.

[0008] According to a further technical solution, one end of the exhaust pipe is connected to the air collecting chamber, and the other end of the air collecting chamber is connected to the air inlet chamber.

[0009] According to a further technical solution, a handle housing and a cutting shield housing are installed on the outside of the driving motor housing, the handle housing is arranged on the left side of the cutting shield housing, and a circular saw chassis is installed on the bottom of the air inlet device and the cutting shield housing.

[0010] According to a further technical solution, a cutting protection cavity is provided inside the cutting protection cover shell, a cutting disk is fixedly mounted on the outside of the air collecting box, and the cutting disk is arranged inside the cutting protection cavity.

[0011] According to a further technical solution, an exhaust port is provided on the outer side of the cutting protective cover shell, an auxiliary handle is fixedly installed on the inner side of the cutting protective cover shell, and the exhaust port is communicated with the interior of the cutting protective cavity.

[0012] According to a further technical solution, the opening of the air jet is facing the side of the cutting disc, and the exhaust hole is facing the top of the cutting protective cover shell.

[0013] According to a further technical solution, an exhaust hole is provided on the top of the outer side of the air collecting box, and the exhaust hole is connected to the interior of the air collecting cavity.

[0014] According to a further technical solution, a heat dissipation blade is provided at the other end of the driving shaft, and the heat dissipation blade is arranged on the outside of the motor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The utility model discloses a split-type brushless motor for an electric circular saw, which is provided with an air jet and an air inlet device. Then, when the motor is running, it drives the drive shaft to rotate, thereby starting the air inlet device to operate. The rotation of the primary blade and the secondary blade will generate a strong suction force to draw in air. The inhaled air will enter the air inlet chamber and then enter the air collecting chamber through the exhaust pipe. The continuously inhaled gas will accumulate in the air collecting chamber and be ejected to the side of the cutting disc and the top of the cutting protection chamber through the air jet and the exhaust hole respectively. After the ejected airflow encounters the rotating cutting disc, it will diffuse outward along its outer surface, thereby cleaning the surface of the cutting disc and removing dust from the cutting protection chamber with the help of centrifugal force. Finally, the cleaned gas is discharged to the outside through the exhaust port, and the strong suction generated by the air inlet device can effectively remove the wood chips and dust inside the cutting protection cavity to prevent them from accumulating during the long sawing process, thereby avoiding the risk of reduced working efficiency of the cutting disc and equipment damage. Moreover, discharging the cleaned gas to the outside through the exhaust port can significantly reduce the dust and wood chips in the workshop, providing a cleaner and healthier working environment and protecting the health of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall top view of the structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall side structure of the utility model;

[0020] Figure 4 It is a side sectional structural schematic diagram of the utility model;

[0021] Figure 5 It is a schematic diagram of the internal structure of the motor 20 in the present utility model;

[0022] Figure 6 This is a schematic diagram of the top view of the motor 20 in the present invention;

[0023] Figure 7 It is a side cross-sectional structural diagram of the motor 20 in the present utility model;

[0024] Figure 8 It is a schematic diagram of the appearance structure of the gas collecting box 25 in the present invention.

[0025] Description of reference numerals:

[0026] Circular saw chassis 11, drive motor housing 12, handle housing 13, cutting shield housing 14, exhaust port 15, auxiliary handle 16, cutting shield chamber 17, cutting disc 18, equipment chamber 19, motor 20, heat dissipation blade 21, drive shaft 22, air inlet device 23, exhaust pipe 24, air collecting box 25, air jet 26, air collecting chamber 27, air inlet chamber 28, first-stage blade 29, second-stage blade 30, rotating collar 31, exhaust hole 32, air inlet check valve 33, sawtooth mounting plate 34, cleaning tissue 35, annular air inlet plate 36. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances. Example

[0030] As attached Figure 1 To the attached Figure 8 As shown:

[0031] The utility model provides a split-type brushless motor for an electric circular saw.

[0032] Refer to the attached Figure 1 To the attached Figure 8, comprising: a drive motor housing 12, an equipment chamber 19 is provided inside the drive motor housing 12, a motor 20 is installed inside the equipment chamber 19, a drive shaft 22 is provided inside the motor 20, an output end of the drive shaft 22 is connected to an air inlet device 23, the air inlet device 23 comprises an annular air inlet plate 36, a first-level blade 29 and a second-level blade 30, an air inlet check valve 33 is provided on the outside of the annular air inlet plate 36, a first-level blade 29 and a second-level blade 30 are installed on one end of the air inlet check valve 33, the first-level blade 29 is provided near the annular air inlet On one side of the plate 36, the primary blade 29 and the secondary blade 30 are turbine rotating blades, and the primary blade 29 and the secondary blade 30 are staggered. The other end of the annular air inlet plate 36 is provided with a serrated mounting disk 34 and a cleaning organization 35. The serrated mounting disk 34 is arranged on one side of the air inlet device 23. The cleaning organization 35 includes an air collecting box 25 and an air jet 26. A plurality of air jets 26 are arranged in an array on the outer side of the air collecting box 25. Two rotating rings 31 are provided on the inner side of the annular air inlet plate 36. The two rotating rings 31 are rotated to provide an exhaust pipe 24.

[0033] Preferably, refer to the attached Figure 7 An air inlet cavity 28 is provided inside the annular air inlet plate 36 , and an air collecting cavity 27 is provided inside the air collecting box 25 .

[0034] Preferably, refer to the attached Figure 7 One end of the exhaust pipe 24 is connected to the air collecting chamber 27, and the other end of the air collecting chamber 27 is connected to the air inlet chamber 28.

[0035] Preferably, refer to the attached Figure 1 A handle housing 13 and a cutting shield housing 14 are installed on the outside of the driving motor housing 12. The handle housing 13 is arranged on the left side of the cutting shield housing 14. The circular saw chassis 11 is installed at the bottom of the air inlet device 23 and the cutting shield housing 14.

[0036] Preferably, refer to the attached Figure 4 A cutting protection chamber 17 is provided inside the cutting protection cover shell 14 , and a cutting disc 18 is fixedly mounted on the outside of the air collecting box 25 , and the cutting disc 18 is arranged inside the cutting protection chamber 17 .

[0037] Preferably, refer to the attached Figure 3 To the attached Figure 4 An air outlet 15 is provided on the outside of the cutting protective cover shell 14 , and an auxiliary handle 16 is fixedly installed on the inside of the cutting protective cover shell 14 . The air outlet 15 is communicated with the inside of the cutting protective cavity 17 .

[0038] Preferably, refer to the attached Figure 4 To the attached Figure 6 The opening of the air jet 26 faces the side of the cutting disc 18 , and the exhaust hole 32 faces the top of the cutting protective cover shell 14 .

[0039] Preferably, refer to the attached Figure 8 An exhaust hole 32 is provided on the top of the outer side of the air collecting box 25 , and the exhaust hole 32 is connected to the interior of the air collecting cavity 27 .

[0040] Preferably, refer to the attached Figure 6 The other end of the driving shaft 22 is provided with a heat dissipation blade 21, and the heat dissipation blade 21 is arranged on the outside of the motor 20.

[0041] Specific usage of this utility model:

[0042] When using the utility model, first connect the power supply of the utility model. After the power supply is connected, adjust the cutting depth of the saw blade according to the thickness of the material to be cut. Then use a pencil or other marking tool to accurately mark the position where the cutting will be performed on the material to be processed. Then, firmly fix the object to be cut on a stable workbench or clamp to prevent it from moving during operation.

[0043] When the utility model is in operation, the cutting disc 18 first saws the processing material. During this process, the cutting disc 18 contacts the wood and produces a large amount of wood chips. These wood chips will rotate inside the cutting protection chamber 17. After a long period of sawing, wood chips are likely to clog the cutting protection chamber 17. However, the air intake device 23 provided on the other side of the motor 20 can effectively remove the accumulated wood chips in the cutting protection chamber 17. Then, when the motor 20 is running, it will drive the drive shaft 22 to rotate, thereby starting the air intake device 23 to operate. The rotation of the primary blades 29 and the secondary blades 30 will generate a strong suction force to inhale air. The inhaled air will enter the air intake chamber 28, and then enter the air collecting chamber 27 through the exhaust pipe 24. The continuously inhaled gas will accumulate in the air collecting chamber 27, and will be sprayed to the side of the cutting disc 18 and the top of the cutting protection chamber 17 through the air jet 26 and the exhaust hole 32 respectively. When the ejected airflow encounters the rotating cutting disc 18, it diffuses outward along its outer surface, thereby cleaning the surface of the cutting disc 18 and removing dust from the cutting protection chamber 17 with the help of centrifugal force. Finally, the cleaned air is discharged to the outside through the exhaust port 15. The strong suction force generated by the air inlet device 23 can effectively remove wood chips and dust inside the cutting protection chamber 17, preventing them from accumulating during long-term sawing, thereby avoiding the risk of reduced working efficiency of the cutting disc 18 and damage to the equipment. In addition, discharging the cleaned air to the outside through the exhaust port 15 can significantly reduce dust and wood chips in the workshop, providing a cleaner and healthier working environment and protecting the health of operators.

[0044] The utility model discloses a split-type brushless motor for an electric circular saw, which is provided with an air jet 26 and an air inlet device 23. Then, when the motor 20 is running, it drives the drive shaft 22 to rotate, thereby starting the air inlet device 23 to operate. The rotation of the primary blade 29 and the secondary blade 30 will generate a strong suction force to draw in air. The inhaled air will enter the air inlet chamber 28, and then enter the air collecting chamber 27 through the exhaust pipe 24. The continuously inhaled gas will accumulate in the air collecting chamber 27, and will be ejected to the side of the cutting disc 18 and the top of the cutting protection chamber 17 through the air jet 26 and the exhaust hole 32 respectively. After the ejected airflow encounters the rotating cutting disc 18, it will diffuse outward along its outer surface, thereby cleaning the surface of the cutting disc 18 and removing dust from the cutting protection chamber 17 with the help of centrifugal force. Finally, the cleaned gas is discharged to the outside through the exhaust port 15, and the strong suction force generated by the air inlet device 23 can effectively remove the wood chips and dust inside the cutting protection chamber 17 to prevent them from accumulating during a long period of sawing, thereby avoiding the risk of reduced working efficiency of the cutting disc 18 and equipment damage. Moreover, by discharging the cleaned gas to the outside through the exhaust port 15, the dust and wood chips in the workshop can be significantly reduced, providing a cleaner and healthier working environment and protecting the health of the operators.

[0045] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A split-type brushless motor for an electric circular saw, comprising a drive motor housing (12), characterized in that: An equipment chamber (19) is provided inside the driving motor housing (12), a motor (20) is installed inside the equipment chamber (19), a driving shaft (22) is provided inside the motor (20), an output end of the driving shaft (22) is connected to an air intake device (23), the air intake device (23) comprises an annular air intake plate (36), a primary blade (29) and a secondary blade (30), an air intake check valve (33) is provided outside the annular air intake plate (36), a primary blade (29) and a secondary blade (30) are installed at one end of the air intake check valve (33), the primary blade (29) is provided on one side close to the annular air intake plate (36), and the primary blade (29) and the secondary blade (30) are installed at one end of the air intake check valve (33), and the primary blade (29) is provided on one side close to the annular air intake plate (36). The first-stage blade (29) and the second-stage blade (30) are turbine rotating blades. The first-stage blade (29) and the second-stage blade (30) are staggered. The other end of the annular air inlet plate (36) is provided with a serrated mounting disk (34) and a cleaning organization (35). The serrated mounting disk (34) is arranged on one side of the air inlet device (23). The cleaning organization (35) includes an air collecting box (25) and an air jet (26). A plurality of air jets (26) are arranged in an array on the outer side of the air collecting box (25). Two rotating rings (31) are provided on the inner side of the annular air inlet plate (36). The two rotating rings (31) are provided with an exhaust pipe (24) when rotating.

2. The split-type brushless motor for an electric circular saw according to claim 1, characterized in that: An air inlet cavity (28) is provided inside the annular air inlet plate (36), and an air collecting cavity (27) is provided inside the air collecting box (25).

3. The split-type brushless motor for an electric circular saw according to claim 2, characterized in that: One end of the exhaust pipe (24) is in communication with the air collecting chamber (27), and the other end of the air collecting chamber (27) is in communication with the air inlet chamber (28).

4. The split-type brushless motor for an electric circular saw according to claim 3, characterized in that: The invention comprises a handle housing (13) and a cutting shield housing (14) installed on the outside of the driving motor housing (12); the handle housing (13) is arranged on the left side of the cutting shield housing (14); and a circular saw chassis (11) is installed on the bottom of the air inlet device (23) and the cutting shield housing (14).

5. The split-type brushless motor for an electric circular saw according to claim 4, characterized in that: A cutting protection cavity (17) is provided inside the cutting protection cover housing (14), and a cutting disc (18) is fixedly installed outside the air collecting box (25), and the cutting disc (18) is arranged inside the cutting protection cavity (17).

6. The split-type brushless motor for an electric circular saw according to claim 5, characterized in that: An air outlet (15) is provided on the outside of the cutting protective cover shell (14), an auxiliary handle (16) is fixedly installed on the inside of the cutting protective cover shell (14), and the air outlet (15) is communicated with the inside of the cutting protective cavity (17).

7. The split-type brushless motor for an electric circular saw according to claim 6, characterized in that: An exhaust hole (32) is provided on the top of the outer side of the air collecting box (25), and the exhaust hole (32) is communicated with the interior of the air collecting cavity (27).

8. The split-type brushless motor for an electric circular saw according to claim 7, characterized in that: The opening of the air jet (26) faces the side of the cutting disc (18), and the exhaust hole (32) faces the top of the cutting protective cover shell (14).

9. The split-type brushless motor for an electric circular saw according to claim 1, characterized in that: The other end of the driving shaft (22) is provided with a heat dissipation blade (21), and the heat dissipation blade (21) is arranged outside the motor (20).

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