Miter saw

Abstract

The application provides a miter saw, which comprises a workbench for placing a workpiece and a saw mechanism supported by the workbench, the saw mechanism comprising a machine shell, a saw blade, an electric control assembly and a motor installed on the machine shell, the machine shell comprising a handle shell, a shroud, a cylindrical shell installed on the shroud and a rear cover installed on the cylindrical shell, the shroud covering the saw blade, the cylindrical shell and the rear cover being assembled to form a first mounting cavity, the motor being installed in the first mounting cavity, the motor driving the saw blade, the handle shell being fixedly connected with the cylindrical shell, the motor comprising a stator, the electric control assembly being connected with the stator through an electric wire to form an assembly, the assembly being integrally installed on the machine shell, the electric control assembly comprising a controller, an electrode seat and a switch, the switch and the electrode seat being installed on the handle shell, the stator and the controller being installed in the first mounting cavity, the rear cover being provided with a ventilation opening, the controller being arranged close to the ventilation opening and located in the passage of the cooling air flow.

Description

Technical Field

[0001] This application relates to the field of power tools, and more particularly to a bevel saw. Background Technology

[0002] Currently, a miter saw consists of a housing and an electrical control assembly and motor mounted on the housing. The electrical control assembly includes a controller, electrode holder, and switch. The motor includes a stator and a rotor. Typically, the stator, controller, electrode holder, and switch are separately mounted on the housing and then welded together to form an assembly. This assembly method is cumbersome and results in inconsistent welding quality.

[0003] Therefore, it is necessary to provide a new type of bevel saw. Utility Model Content

[0004] This application provides a simple, reliable, and long-lasting miter saw.

[0005] Specifically, this application provides a miter saw, which includes a workbench for placing a workpiece and a saw mechanism supported by the workbench. The saw mechanism includes a housing and a saw blade, an electrical control assembly, and a motor mounted on the housing. The housing includes a handle housing, a protective cover, a cylindrical housing mounted on the protective cover, and a rear cover mounted on the cylindrical housing. The protective cover covers the saw blade. The cylindrical housing and the rear cover are assembled to form a first mounting cavity. The motor is mounted in the first mounting cavity and drives the saw blade. The handle housing is fixedly connected to the cylindrical housing. The motor includes a stator. The electrical control assembly is connected to the stator via wires to form an assembly. The assembly is integrally mounted on the housing. The electrical control assembly includes a controller, an electrode holder, and a switch. The switch and the electrode holder are both mounted on the handle housing. The stator and the controller are both mounted in the first mounting cavity. The rear cover has a vent. The controller is located near the vent and is situated within a cooling airflow channel.

[0006] Furthermore, the handle housing includes a first handle half-shell and a second handle half-shell, which are assembled to form a second mounting cavity; the cylindrical housing is provided with a first mounting port, and the first handle half-shell is provided with a second mounting port, which are arranged opposite to each other; the switch and the electrode seat are mounted in the second mounting cavity through the first mounting port and the second mounting port.

[0007] Furthermore, the first handle half-shell is also provided with a positioning hole, which is adjacent to the second mounting port; the cylindrical shell is also provided with a positioning post, which is adjacent to the first mounting port and cooperates with the positioning hole.

[0008] Furthermore, the first handle half-shell is provided with a first mounting surface, which surrounds the second mounting opening; the cylindrical shell is provided with a second mounting surface, which is adjacent to the first mounting opening, and the first mounting surface and the second mounting surface are in contact.

[0009] Furthermore, the first mounting port includes a first part, a second part, and a third part. The first part is disposed opposite to the second mounting port, the second part is covered by the first handle half-shell, and the third part is covered by the rear cover.

[0010] Furthermore, the handle housing includes a base and a handle portion and a battery pack mounting portion extending from the base. The switch is mounted on the handle portion, the electrode holder is mounted on the battery pack mounting portion, and the second mounting port is disposed on the base.

[0011] Furthermore, the rear cover surrounds the controller.

[0012] Furthermore, the cylindrical housing includes a main body and a plurality of positioning portions extending from the main body, the stator is mounted on the main body, and the controller is positioned by the plurality of positioning portions.

[0013] Furthermore, the cylindrical housing and the rear cover are arranged along a first direction, and the cylindrical housing and the handle housing are arranged along a second direction, wherein the first direction is perpendicular to the second direction; the first mounting opening extends along the first direction.

[0014] Furthermore, the electronic control component also includes a warning light, which is installed on the cylindrical housing and controlled by the controller.

[0015] In this application, the electronic control component and the stator are connected by wires to form an assembly assembly, which can be installed as a whole in the housing. The electronic control component includes a controller, an electrode holder, and a switch. The electrode holder and the switch are installed in the handle housing. The stator and the controller are both installed in the first mounting cavity formed by assembling the cylindrical housing and the rear cover. The rear cover is provided with a vent. The controller is located near the vent and is located in the channel of cooling airflow. This design makes assembly simple, reliable, and provides better heat dissipation. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the oblique cutting saw of this application.

[0017] Figure 2 yes Figure 1 The diagram shows a structural schematic of the oblique cutting saw from another perspective.

[0018] Figure 3 yes Figure 2The diagram shows the structure of the oblique cutting saw from another perspective.

[0019] Figure 4 yes Figure 3 The diagram shows an exploded 3D view of the oblique cutting saw.

[0020] Figure 5 yes Figure 4 The diagram shows the structural structure of the assembly component.

[0021] Figure 6 yes Figure 4 The diagram shows a partial structure of the oblique cutting saw.

[0022] Figure 7 yes Figure 6 An exploded 3D diagram of the structure shown.

[0023] Figure 8 yes Figure 7 A further exploded three-dimensional view of the structure shown.

[0024] Figure 9 yes Figure 4 The diagram shows a partial structure of the oblique cutting saw.

[0025] Figure 10 yes Figure 9 An exploded 3D diagram of the structure shown.

[0026] Figure 11 yes Figure 9 A schematic diagram of part of the structure shown.

[0027] Figure 12 yes Figure 11 A schematic diagram of the structure from another perspective.

[0028] Figure 13 yes Figure 12 The diagram shown is a structural schematic from another perspective.

[0029] Figure 14 yes Figure 13 An exploded three-dimensional view of the structure.

[0030] Figure 15 yes Figure 14 The diagram shows the structure of the cylindrical shell.

[0031] Figure 16 yes Figure 10 The diagram shows the structure of the handle housing. Detailed Implementation

[0032] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0033] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0034] Please combine Figures 1 to 16This application provides a miter saw 100, including a worktable 60 for placing a workpiece and a sawing mechanism supported by the worktable 60. The sawing mechanism includes a housing 10 and a saw blade 80 mounted on the housing 10, an electrical control assembly 20, and a motor (not labeled). The housing 10 includes a handle housing 13, a protective cover 70, a cylindrical housing 11 mounted on the protective cover 70, and a rear cover 12 mounted on the cylindrical housing 11. The handle housing 13 is fixedly connected to the cylindrical housing 11. The protective cover 70 covers the saw blade 80. The cylindrical housing 11 and the rear cover 12 are assembled to form a first mounting cavity 14. The motor is mounted in the first mounting cavity 14 and drives the saw blade 80. The electrical control assembly 20 includes a controller 21, a warning light 22, an electrode holder 23, and a switch 24. The motor includes a stator 31 and a rotor (not shown). The controller 21, warning light 22, electrode holder 23, switch 24, and stator 31 are connected by wires 40 to form an assembly 50, which can be installed as a whole on the housing 10. The switch 24 and electrode holder 23 are both installed on the handle housing 13. The cylindrical housing 11 and the rear cover 12 are assembled to form a first mounting cavity 14. The stator 31 and the controller 21 are both installed in the first mounting cavity 14. The rear cover 12 is provided with a vent 16. The controller 21 is located near the vent 16 and is located in the channel of cooling airflow. The warning light 22 is installed on the cylindrical housing 11 and is controlled by the controller 21. The warning light 22 has the following two functions: (1) illumination, (2) when an abnormal situation occurs, the warning light 22 will flash a different number of times according to different abnormal situations, so that the user can quickly find the cause. The cylindrical housing 11 and the rear cover 12 are arranged along the first direction X, and the cylindrical housing 11 and the handle housing 13 are arranged along the second direction Y, wherein the first direction X is perpendicular to the second direction Y. Specifically, the cylindrical housing 11 includes a main body 111 and multiple positioning parts 112 extending from the main body 111. The stator 31 is mounted on the main body 111, and the controller 21 is positioned by the multiple positioning parts 112. The rear cover 12 surrounds the controller 21. This design facilitates heat dissipation from the controller 21, resulting in good cooling performance and extending the lifespan of the controller 21. The stator 31 has a continuous ring structure without breaks, ensuring the installation accuracy between the stator 31 and the main body 111.

[0035] The handle housing 13 includes a base 133, a handle portion 134 extending from the base 133, and a battery pack mounting portion 135. A switch 24 is mounted on the handle portion 134, and an electrode holder 23 is mounted on the battery pack mounting portion 135. The handle housing 13 includes a first handle half-shell 131 and a second handle half-shell 132, which, when assembled, form a second mounting cavity 15. The base 133 includes a first base 137 of the first handle half-shell 131 and a second base 138 of the second handle half-shell 132. The cylindrical housing 11 has a first mounting opening 110 extending along a first direction X. The first base 137 of the first handle half-shell 131 has a second mounting opening 130, which is positioned opposite to the first mounting opening 110 along a second direction Y. The switch 24 and the electrode holder 23 are mounted in the second mounting cavity 15 through the first mounting opening 110 and the second mounting opening 130. The wire 40 passes through the first mounting port 110 and the second mounting port 130. The first base 137 of the first handle half-shell 131 is provided with a first mounting surface 136, which surrounds the second mounting port 130; the cylindrical shell 11 is provided with a second mounting surface 116, which is adjacent to the first mounting port 110, and the first mounting surface 136 and the second mounting surface 116 are in contact. The first base 137 of the first handle half-shell 131 is also provided with a positioning hole 139, which is adjacent to the second mounting port 130; the cylindrical shell 11 is also provided with a positioning post 119, which is adjacent to the first mounting port 110, and the positioning post 119 cooperates with the positioning hole 139. The first mounting port 110 includes a first part 113, a second part 114 and a third part 115. The second part 114 is located between the first part 113 and the third part 115. The first part 113 and the second mounting port 130 are arranged opposite each other along the second direction Y. The second part 114 is covered by the first base 137 of the first handle half shell 131, and the third part 115 is covered by the rear cover 12.

[0036] In this application, the electronic control component 20 and the stator 31 are connected by wires 40 to form an assembly component 50, which can be installed as a whole on the housing 10. The electronic control component 20 includes a controller 21, an electrode holder 23 and a switch 24. The stator 31 and the controller 21 are both installed in the first mounting cavity 14 formed by assembling the cylindrical housing 11 and the rear cover 12. The rear cover 12 is provided with a vent 16. The controller 21 is located near the vent 16 and is located in the channel of cooling airflow. This design makes assembly simple, reliable and has a better heat dissipation effect.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A miter saw, comprising a worktable for placing a workpiece and a sawing mechanism supported by the worktable, the sawing mechanism comprising a housing and a saw blade, an electrical control assembly, and a motor mounted on the housing, the housing comprising a handle housing, a protective cover, a cylindrical housing mounted on the protective cover, and a rear cover mounted on the cylindrical housing, the protective cover covering the saw blade, the cylindrical housing and the rear cover being assembled to form a first mounting cavity, the motor being mounted in the first mounting cavity, the motor driving the saw blade, the handle housing being fixedly connected to the cylindrical housing, the motor comprising a stator, the electrical control assembly being connected to the stator via wires to form an assembly, the assembly being integrally mounted on the housing, characterized in that... The electronic control assembly includes a controller, an electrode holder, and a switch. The switch and the electrode holder are both installed in the handle housing. The stator and the controller are both installed in the first mounting cavity. The rear cover has a vent. The controller is located near the vent and is situated within the cooling airflow channel.

2. The bevel saw according to claim 1, characterized in that, The handle housing includes a first handle half-shell and a second handle half-shell. The first handle half-shell and the second handle half-shell are assembled to form a second mounting cavity. The cylindrical housing is provided with a first mounting port, and the first handle half-shell is provided with a second mounting port. The first mounting port and the second mounting port are arranged opposite to each other. The switch and the electrode seat are mounted in the second mounting cavity through the first mounting port and the second mounting port.

3. The bevel saw according to claim 2, characterized in that, The first handle half-shell is also provided with a positioning hole, which is adjacent to the second mounting port; the cylindrical shell is also provided with a positioning post, which is adjacent to the first mounting port and cooperates with the positioning hole.

4. The bevel saw according to claim 2, characterized in that, The first handle half-shell has a first mounting surface, which surrounds the second mounting opening; the cylindrical shell has a second mounting surface, which is adjacent to the first mounting opening, and the first mounting surface is in contact with the second mounting surface.

5. The bevel saw according to claim 2, characterized in that, The first mounting port includes a first part, a second part, and a third part. The first part is disposed opposite to the second mounting port, the second part is covered by the first handle half shell, and the third part is covered by the rear cover.

6. The bevel saw according to claim 2, characterized in that, The handle housing includes a base and a handle portion and a battery pack mounting portion extending from the base. The switch is mounted on the handle portion, the electrode holder is mounted on the battery pack mounting portion, and the second mounting port is disposed on the base.

7. The bevel saw according to claim 1, characterized in that, The back cover surrounds the controller.

8. The bevel saw according to claim 7, characterized in that, The cylindrical housing includes a main body and a plurality of positioning parts extending from the main body. The stator is mounted on the main body, and the controller is positioned by the plurality of positioning parts.

9. The bevel saw according to claim 2, characterized in that, The cylindrical housing and the rear cover are arranged along a first direction, and the cylindrical housing and the handle housing are arranged along a second direction, wherein the first direction is perpendicular to the second direction; the first mounting opening extends along the first direction.

10. The bevel saw according to claim 1, characterized in that, The electronic control assembly also includes a warning light, which is installed on the cylindrical housing and controlled by the controller.

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