CN219504426U - Angular electric tool - Google Patents

Abstract

An angular electric tool comprises a main body extending along the transverse direction, a brushless motor arranged in the main body, a transmission mechanism connected to the transverse front end of the brushless motor, an output shaft driven by the transmission mechanism, a switch and a control board arranged at the transverse rear end of the brushless motor, wherein the switch controls the start and stop of the brushless motor through the control board; the control board is obliquely arranged between the switch and the brushless motor along the transverse direction, a radiating opening for radiating heat of the brushless motor is formed in the main body, and the control board is positioned at the transverse rear end of the radiating opening. The control panel is obliquely arranged along the extending direction of the main body and positioned at the rear parts of the heat dissipation port and the brushless motor, so that the dimension in the height direction vertical to the longitudinal direction is reduced on one hand, and the control panel is convenient to grasp; on the other hand, the radiating port is specially used for providing radiating airflow for the brushless motor and the control panel, so that the cooling efficiency of the brushless motor and the control panel is ensured.

Description

Angular electric tool

[ technical field ]

The utility model relates to the technical field of electric tools, in particular to a miniaturized angular electric tool.

[ background Art ]

Angular power tools, such as polishers and angle grinders, include a longitudinally extending body and a head portion attached to the body at a generally substantially vertical angle, and the user must hold the body while using the angular power tool to enable the head portion to act on a work plane at a vertical angle. With the use of brushless motors, the control board required for the angular power tool increases in size, resulting in an excessively large circumferential size of the main body assembled in the conventional manner, which is inconvenient for the user to hold.

In view of the foregoing, it is desirable to provide an improved angular power tool that overcomes the shortcomings of the prior art.

[ summary of the utility model ]

The utility model aims to provide an angular electric tool, which can realize miniaturization of a main body by a simpler structure and solve the technical problem that the main body is not easy to hold due to overlarge control plate.

The technical scheme adopted for solving the problems in the prior art is as follows:

an angular electric tool comprises a main body extending along the transverse direction, a brushless motor arranged in the main body, a transmission mechanism connected to the transverse front end of the brushless motor, an output shaft driven by the transmission mechanism, a switch and a control board arranged at the transverse rear end of the brushless motor, wherein the switch controls the start and stop of the brushless motor through the control board; the control board is obliquely arranged between the switch and the brushless motor along the transverse direction, a radiating opening for radiating heat of the brushless motor is formed in the main body, and the control board is positioned at the transverse rear end of the radiating opening.

The further improvement scheme is as follows: the heat dissipation port is provided with a plurality of grids extending transversely, the control board and the grids are obliquely and alternately arranged and divide the grids into two side parts, wherein one side part close to the brushless motor is the heat dissipation port, and one side part far away from the brushless motor is closed.

The further improvement scheme is as follows: the angle electric tool further comprises a dust cover arranged on the heat dissipation opening, and the dust cover is detachably arranged on the main body.

The further improvement scheme is as follows: the control panel is obliquely arranged in the main body, and the plane where the control panel is positioned and the transverse direction form an included angle of 30-60 degrees.

The further improvement scheme is as follows: the main part is equipped with the spacing groove that is located on the inner wall, the control panel is fixed in the spacing groove, the spacing groove is located the upper and lower both ends of control panel.

The further improvement scheme is as follows: the angular electric tool further comprises a speed regulation disc arranged on the main body, and the speed regulation disc is electrically connected with the control board.

The further improvement scheme is as follows: the power tool includes a head angularly coupled to the body, the output shaft being located within the head.

The further improvement scheme is as follows: the power tool includes a battery pack removably attached to the body at a lateral end of the body remote from the head.

The further improvement scheme is as follows: the tool further includes an auxiliary handle connected to the head, the auxiliary handle being pivotally movable relative to the head about a longitudinal direction perpendicular to the lateral direction.

The further improvement scheme is as follows: the angular electric tool is a polishing machine or an angle grinder.

Compared with the prior art, the utility model has the following beneficial effects: according to the angular electric tool provided by the utility model, as the control panel is obliquely arranged along the extending direction of the main body and is positioned at the rear parts of the heat dissipation port and the brushless motor, the size of the electric tool in the height direction vertical to the longitudinal direction is reduced on the one hand, and the electric tool is convenient to grasp; on the other hand, the radiating port is specially used for providing radiating airflow for the brushless motor and the control panel, so that the cooling efficiency of the brushless motor and the control panel is ensured.

[ description of the drawings ]

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:

FIG. 1 is a perspective view of a polishing machine according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the polishing machine of FIG. 1 with half of the housing removed;

FIG. 3 is a schematic view of the left and right half shells of the polisher shown in FIG. 1;

FIG. 4 is a partially exploded view of the polisher shown in FIG. 1;

fig. 5 is an exploded view of another structure of the polishing machine shown in fig. 1.

Meaning of reference numerals in the drawings:

100. polishing machine 1, main body 11, half shell

111. Radiating opening 12, transmission mechanism 13 and switch

14. Brushless motor 15, control board 16, grille

113. Limit groove 17, dust cover 171 and metal net

18. Speed regulation disc 19, battery pack 2 and head

21. Output shaft 23, working head 3, auxiliary handle

141. Radiator fan 112 and air outlet

Detailed description of the preferred embodiments

The terminology used in the present utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Words such as "upper", "lower", "front", "rear", etc., indicating an azimuth or a positional relationship are based on only the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus/elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

Referring to fig. 1 and 2, in a preferred embodiment, a polishing machine 100 is taken as an example of a power tool in an angular direction, however, the polishing machine 100 does not limit the power tool in an angular direction, and in other embodiments, the power tool in an angular direction may be another power tool such as an angle grinder or an angle electric wrench.

The polishing machine 100 comprises a main body 1 extending along the transverse direction, a brushless motor 14 positioned in the main body 1, a transmission mechanism 12 connected to the transverse front end of the brushless motor 14, an output shaft 21 driven by the transmission mechanism 12, a switch 13 positioned at the transverse rear end of the brushless motor 14 and a control board 15, wherein the switch 13 controls the start and stop of the brushless motor 14 through the control board 15; the control board 15 is obliquely disposed between the switch 13 and the brushless motor 14 along the transverse direction, a heat dissipation port 111 for dissipating heat from the brushless motor 14 is disposed on the main body 1, and the control board 15 is disposed at a rear end of the heat dissipation port 111 in the transverse direction.

The control board 15 is obliquely arranged in the main body 1 and is positioned at the rear parts of the heat dissipation port 111 and the brushless motor 14, so that the size of the height direction vertical to the longitudinal direction is reduced, the grasping is convenient, and the heat dissipation port 111 is specially used for providing heat dissipation airflow for the brushless motor 14, so that the cooling efficiency of the brushless motor 14 is ensured.

As shown in fig. 1 and 2, the heat dissipation port 111 is an air intake, the lateral front end of the brushless motor 14 is further provided with an air outlet 112, and the heat dissipation air flow flowing from the heat dissipation port 111 to the air outlet 112 not only dissipates heat for the brushless motor 14, but also dissipates heat for the head 2 located at the lateral front end of the main body 1 and the transmission mechanism 12 in the head 2. Of course, in other embodiments, the heat dissipation port 111 may be an air outlet.

Referring to fig. 2 and 3, the main body 1 is formed by assembling left and right half shells 11, and the two heat dissipation openings 111 are oppositely provided on the left and right half shells 11. The heat radiation port 111 enters the inside of the main body 1 from the left and right sides, flows through the brushless motor 14, and finally flows out from the air outlet 112. Wherein, a cooling fan 141 is arranged on one side of the brushless motor 14 facing the gear mechanism, and when the brushless motor 14 works, the cooling fan 141 rotates, so that negative pressure is generated on the periphery of the cooling fan 141, and air flow is sucked by the cooling opening 111 to cool the brushless motor 14.

As further shown in fig. 2 and 3, the heat dissipation opening 111 is provided with a plurality of grids 16 extending in the transverse direction, and the control board 15 and the grids 16 are disposed diagonally and crosswise and divide the grids 16 into two side portions, wherein a side portion close to the brushless motor 14 is the heat dissipation opening 111, and a side portion far away from the brushless motor 14 is a closed configuration. The grille 16 of the heat sink 111 has a substantially rectangular outline when viewed from outside the main body 1, and the grille 16 is bounded by the control board 15 when viewed from inside the main body 1, with one side being air-permeable and the other side being closed. In other words, the actually functioning heat sink 111 presents a trapezoidal outer contour.

Referring to fig. 5, the polishing machine 100 further includes a dust cap 17 mounted on the heat dissipation port 111, and the dust cap 17 is detachably connected to the main body 1. The dust cover 17 comprises a plastic frame and a metal net 171, wherein the metal net 171 and the plastic frame are integrally injection molded, namely, the metal net 171 is placed in a mold before injection molding, and the metal net 171 is naturally embedded in the plastic frame after injection molding. Of course, in other embodiments, the metal mesh 171 and the plastic frame may be formed separately, and then the metal mesh 171 may be inserted into the plastic frame.

Referring back to fig. 2, the control board 15 is obliquely disposed in the main body 1, and the plane on which the control board 15 is disposed forms an included angle of 30 ° to 60 ° with the transverse direction, so that the dimension in the height direction is smaller to facilitate gripping, and the comfort level of the user during gripping is improved.

With continued reference to fig. 2 and 3, the main body 1 is provided with a limiting groove 113 on the inner wall, the control board 15 is fixed in the limiting groove 113, and the limiting groove 113 is located at the upper end and the lower end of the control board 15. In this embodiment, the two ends of the control board 15 are respectively provided with a limiting groove 113, and each limiting groove 113 is defined by 3 rib plates and is used for positioning the control board 15 to avoid displacement.

As shown in fig. 1 and 2, the polishing machine 100 further includes a speed plate 18 mounted on the main body 1, and the speed plate 18 is electrically connected to the control board 15. The speed regulation plate 18 is fixed in the main body 1 through a pivot, and an opening is arranged on the main body 1 so as to expose the peripheral edge part of the speed regulation plate 18, thereby facilitating the user to dial the operation to regulate the rotating speed of the brushless motor 14. The speed regulation plate 18 is electrically connected with the control plate 15 through a cable, a user sends a control signal to the control plate 15 by operating the speed regulation plate 18, and the control plate 15 further controls the brushless motor 14 to output a corresponding rotating speed so as to better execute the task of the working head 23.

The polisher 100 comprises a head 2 angularly connected to the main body 1, the output shaft 21 being located within the head 1. The polisher 100 comprises a battery pack 19 for powering the brushless motor 14, the battery pack 19 being located at a lateral end of the main body 1 remote from the head 2, the battery pack 19 being detachably connected to the main body 1. The polishing machine 100 is provided with a mounting portion that receives the battery pack 19, a fitting structure that extends parallel to the output shaft 21 is provided between the battery pack 19 and the mounting portion, and the battery pack 19 is fitted to the mounting portion in a direction perpendicular to the lateral direction.

Referring to fig. 4 and 5, the polishing machine 100 further includes an auxiliary handle 3 connected to the head 2, the auxiliary handle 3 being pivotally movable with respect to the head 2 about a longitudinal direction perpendicular to the lateral direction. The auxiliary handle 3 is a C-shaped handle, and two end points of the C-shaped handle are respectively and rotatably connected with two ends of the pivot shaft.

In summary, the angular electric tool provided by the present utility model is convenient to hold due to the oblique placement of the control board 15 and the positional relationship with the heat dissipation opening 111, and the heat dissipation efficiency of the brushless motor 14 is high, so that the man-machine comfort and the performance of the brushless motor 14 are improved. In addition, the arrangement of the speed regulation disc 18, the auxiliary handle 3 and the battery pack 19 further improves the operability of the angular electric tool and improves the use experience of users.

The present utility model is not limited to the above-described embodiments. Those skilled in the art will readily appreciate that many alternatives to the present utility model are possible without departing from the spirit and scope of the present utility model. The protection scope of the present utility model is subject to the claims.

Claims (10)

1. An angular electric tool comprises a main body extending along the transverse direction, a brushless motor arranged in the main body, a transmission mechanism connected to the transverse front end of the brushless motor, an output shaft driven by the transmission mechanism, a switch and a control board arranged at the transverse rear end of the brushless motor, wherein the switch controls the start and stop of the brushless motor through the control board; the method is characterized in that: the control board is obliquely arranged between the switch and the brushless motor along the transverse direction, a radiating opening for radiating heat of the brushless motor is formed in the main body, and the control board is positioned at the transverse rear end of the radiating opening.

2. The angle power tool of claim 1, wherein: the heat dissipation port is provided with a plurality of grids extending transversely, the control board and the grids are obliquely and alternately arranged and divide the grids into two side parts, wherein one side part close to the brushless motor is the heat dissipation port, and one side part far away from the brushless motor is closed.

3. The angle power tool of claim 1, wherein: the angle electric tool further comprises a dust cover arranged on the heat dissipation opening, and the dust cover is detachably arranged on the main body.

4. The angle power tool of claim 1, wherein: the control panel is obliquely arranged in the main body, and the plane where the control panel is positioned and the transverse direction form an included angle of 30-60 degrees.

5. The angle power tool of claim 1, wherein: the main part is equipped with the spacing groove that is located on the inner wall, the control panel is fixed in the spacing groove, the spacing groove is located the upper and lower both ends of control panel.

6. The angle power tool of claim 1, wherein: the angular electric tool further comprises a speed regulation disc arranged on the main body, and the speed regulation disc is electrically connected with the control board.

7. The angle power tool of claim 1, wherein: the power tool includes a head angularly coupled to the body, the output shaft being located within the head.

8. The angle power tool of claim 7, wherein: the power tool includes a battery pack removably attached to the body at a lateral end of the body remote from the head.

9. The angle power tool of claim 7, wherein: the tool further includes an auxiliary handle connected to the head, the auxiliary handle being pivotally movable relative to the head about a longitudinal direction perpendicular to the lateral direction.

10. The angle power tool of claim 1, wherein: the angular electric tool is a polishing machine or an angle grinder.