Handheld electric tool

Abstract

The utility model relates to the technical field of electric tools, and discloses a handheld electric tool which comprises a machine shell assembly, a switch assembly, a motor and a transmission assembly, the motor and the transmission assembly are arranged in the machine shell assembly, the transmission assembly is connected with a power output assembly, and a PCB control unit and a battery unit are further arranged in the machine shell assembly. The PCB control unit comprises a PCB, and the battery unit comprises a battery cell; the battery cell is located on one side of the PCB, and the axis of the battery cell is parallel to the PCB; the battery cell is located on one side of the axial direction of the motor, and the axis of the battery cell is parallel to the output shaft of the motor, or the axis of the battery cell and the output shaft of the motor are collinear. The tool has the advantages of being light in weight, convenient to hold and capable of saving labor when the tool is used for operation.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a handheld electric tool. Background Art

[0002] Currently, there are roughly two structural forms of handheld power tools. One is that a detachable battery pack is installed at the bottom of the power tool body, and the other is that the battery pack is built into the power tool housing. Regardless of which structural form is adopted, for handheld power tools, the defect is that the battery pack part at the bottom is large in size and heavy, which makes the overall center of gravity of the power tool relatively backward, resulting in a poor experience when holding, and it is more laborious to use the tool, which does not meet the requirements of lightweight operation. Utility Model Content

[0003] The utility model aims to provide a handheld electric tool which has the advantages of being lightweight, easy to hold, and labor-saving when using the tool.

[0004] The technical solution of the utility model is as follows: a handheld electric tool comprises a housing assembly, a switch assembly, and a motor and a transmission assembly arranged in the housing assembly, wherein the transmission assembly is connected to a power output assembly, and a PCB control unit and a battery unit are also arranged in the housing assembly, wherein the PCB control unit comprises a PCB board, and the battery unit comprises a battery cell;

[0005] The battery cell is located on one side of the PCB board, and the axis of the battery cell is parallel to the PCB board;

[0006] The battery core is located on one side of the motor's axial direction, and the axis of the battery core is parallel to the output shaft of the motor, or the axis of the battery core is colinear with the output shaft of the motor.

[0007] Compared with the prior art, the beneficial effects of the present invention are embodied in that: the present invention integrates the PCB control unit and the battery unit into the casing assembly to increase the integrity of the power tool, and arranges the battery cells on one side of the motor axis and parallel to the PCB board. At the same time, the axis of the battery cells is also parallel to the output shaft of the motor or the axis of the battery cells is colinear with the output shaft of the motor, so that the PCB control unit and the battery unit as a whole can be compactly arranged along a straight line inside the casing assembly with the motor, the transmission assembly, and the power output assembly, so that the center of gravity of the power tool as a whole is not biased toward the end, and the overall shape is more convenient for the user to hold, which is more labor-saving when using the tool and can meet the lightweight operation requirements.

[0008] In the aforementioned handheld electric tool, the PCB board is located on one side of the motor axis.

[0009] In the aforementioned handheld power tool, the projection of the battery cell in the axial direction overlaps with the projection of the motor in the axial direction.

[0010] In the aforementioned handheld power tool, the number of the battery cells is one, the axis of the battery cell is collinear with the output shaft of the motor, and one end face of the battery cell is arranged adjacent to the end face of the motor away from the output shaft.

[0011] In the aforementioned handheld power tool, the number of the battery cells is two, the two battery cells are arranged adjacent to each other in parallel, and the distances between the axes of the two battery cells and the PCB board are equal.

[0012] In the aforementioned handheld power tool, the number of the battery cells is more than two, and all the battery cells are evenly distributed circumferentially along the extension line of the output shaft of the motor.

[0013] In the aforementioned handheld power tool, the PCB board is arranged adjacent to the battery unit, and the projection of the battery cell in the direction perpendicular to the PCB board completely falls on the PCB board.

[0014] In the aforementioned handheld power tool, the motor is connected with a first plug-in part through a wire, the PCB board is connected with a second plug-in part, and the first plug-in part and the second plug-in part are electrically connected in a pluggable manner.

[0015] In the aforementioned handheld power tool, both the first plug-in part and the second plug-in part are located on one side in the radial direction of the battery cell, and the PCB board is located on the other side in the radial direction of the battery cell.

[0016] In the aforementioned handheld power tool, the handheld power tool is an electric scissors. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 a partial enlarged view at A.

[0019] Reference numerals: 1, switch assembly; 2, motor; 3, transmission assembly; 4, power output assembly; 5, PCB control unit; 51, PCB board; 6, battery unit; 61, battery cell; 7, wire; 8, first plug-in part; 9, second plug-in part. Detailed Embodiments

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0021] An embodiment of the present utility model provides a handheld power tool, the structure of which is as Figure 1 and Figure 2 shown, including a housing assembly, a switch assembly 1, and a motor 2 and a transmission assembly 3 disposed within the housing assembly. Among them, the housing assembly is not shown in the figure. The transmission assembly 3 is connected to a power output assembly 4. A PCB control unit 5 and a battery unit 6 are also provided within the housing assembly. The PCB control unit 5 and the battery unit 6 are both built into the housing assembly, making the power tool more integrated. Among them, the PCB control unit 5 includes a PCB board 51, and the battery unit 6 includes battery cells 61; the battery cells 61 are located on one side of the PCB board 51, and the axis of the battery cells 61 is parallel to the PCB board 51; the battery cells 61 are located on one side of the axis of the motor 2, the axis of the battery cells 61 is parallel to the output shaft of the motor 2, or the axis of the battery cells 61 is collinear with the output shaft of the motor 2.

[0022] In this embodiment, the PCB control unit 5 and the battery unit 6 as a whole can be compactly arranged in a straight line with the motor 2, the transmission assembly 3, and the power output assembly 4 inside the housing assembly, so that the overall center of gravity of the power tool does not deviate towards the end, and the overall shape is more convenient for the user to hold, and it is more labor-saving when using the tool for operation, meeting the lightweight operation requirements.

[0023] Optionally, the PCB board 51 is located on one side of the axis of the motor 2.

[0024] In this embodiment, the PCB control unit 5 and the battery unit 6 are both completely arranged on one side of the axis of the motor 2, without occupying the radial or circumferential space of the motor 2, making the arrangement of the components inside the housing assembly more compact, and the outer diameter of the corresponding part of the housing assembly can be made smaller, which is more convenient for holding.

[0025] Optionally, the projection of the battery cells 61 in the axial direction overlaps with the projection of the motor 2 in the axial direction.

[0026] In this embodiment, the overlapping projection size of the battery cells 61 and the motor 2 in the axial direction mainly depends on the number of the battery cells 61. For example, when the number of the battery cells 61 is one, the projection of the battery cells 61 completely falls on the projection of the motor 2. When the number of the battery cells 61 is multiple, the projections of the multiple battery cells 61 and the projection of the motor 2 partially overlap.

[0027] Optionally, the number of the battery cells 61 is one, the axis of the battery cells 61 is collinear with the output shaft of the motor 2, and one end face of the battery cells 61 is closely arranged adjacent to the end face of the motor 2 away from the output shaft.

[0028] In this embodiment, a single battery cell 61 is coaxially arranged with the motor 2, and the end face of the battery cell 61 is close to the end face of the motor 2, with a compact arrangement.

[0029] Optionally, the number of the battery cells 61 is two. The two battery cells 61 are arranged closely and in parallel, and the distances between the axes of the two battery cells 61 and the PCB board 51 are equal.

[0030] In this embodiment, the two battery cells 61 are close to each other and the distances between them and the PCB board 51 are equal, making the overall structure composed of the PCB control unit 5 and the battery unit 6 compact, so that the outer diameter of the corresponding part of the housing assembly can be made smaller and it is more convenient to hold.

[0031] Optionally, the number of the battery cells 61 is greater than two, and all the battery cells 61 are evenly distributed circumferentially along the extension line of the output shaft of the motor 2.

[0032] In this embodiment, multiple battery cells 61 are evenly distributed circumferentially and adjacent battery cells 61 are close to each other, with a compact structure.

[0033] Optionally, the PCB board 51 and the battery unit 6 are arranged closely, and the projection of the battery cell 61 in the direction perpendicular to the PCB board 51 completely falls on the PCB board 51.

[0034] In this embodiment, although the PCB control unit 5 and the battery unit 6 are two different units, through their close arrangement, they not only occupy less space in the circumferential direction of the motor 2 shaft, but also occupy less space in the length direction of the motor 2 shaft.

[0035] Optionally, the motor 2 is connected with a first plug-in part 8 through a wire 7, the PCB board 51 is connected with a second plug-in part, and the first plug-in part 8 and the second plug-in part are electrically connected in a pluggable manner.

[0036] In this embodiment, the motor 2 and the PCB board 51 are electrically connected through the first plug-in part 8 and the second plug-in part, which is convenient for disassembly and assembly, facilitates the quick detachment between the motor 2 and the PCB board 51, and is convenient for after-sales maintenance.

[0037] Optionally, both the first plug-in part 8 and the second plug-in part are located on one side in the radial direction of the battery cell 61, and the PCB board 51 is located on the other side in the radial direction of the battery cell 61.

[0038] In this embodiment, the overall structure composed of the plug-in part, the battery cell 61 and the PCB board 51 is compact and occupies less space in the circumferential direction of the motor 2 shaft.

[0039] Optionally, part of the power output assembly 4 is exposed outside the housing assembly to facilitate the output of power.

[0040] Optionally, the hand-held electric tool is an electric scissors.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0042] The above is only the preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the idea of the present utility model belong to the protection scope of the present utility model.

[0043] It should be noted that for those of ordinary skill in the art in the technical field of the present application, several improvements and retouches made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A handheld electric tool, comprising a housing assembly, a switch assembly (1), and a motor (2) and a transmission assembly (3) arranged in the housing assembly, wherein the transmission assembly (3) is connected to a power output assembly (4), characterized in that: A PCB control unit (5) and a battery unit (6) are also provided in the housing assembly, wherein the PCB control unit (5) comprises a PCB board (51), and the battery unit (6) comprises a battery cell (61); The battery cell (61) is located on one side of the PCB board (51), and the axis of the battery cell (61) is parallel to the PCB board (51); The battery core (61) is located on one side of the axial direction of the motor (2), and the axis of the battery core (61) is parallel to the output shaft of the motor (2), or the axis of the battery core (61) is colinear with the output shaft of the motor (2).

2. The handheld power tool according to claim 1, characterized in that: The PCB board (51) is located on one side of the axial direction of the motor (2).

3. The handheld power tool according to claim 1, characterized in that: The projection of the battery core (61) in the axial direction and the projection of the motor (2) in the axial direction have overlapping portions.

4. The handheld power tool according to claim 1, characterized in that: The number of the battery core (61) is one, the axis of the battery core (61) is colinear with the output shaft of the motor (2), and one of the end faces of the battery core (61) is arranged closely adjacent to the end face of the motor (2) away from the output shaft.

5. The handheld power tool according to claim 1, characterized in that: The number of the battery cells (61) is two, the two battery cells (61) are arranged closely and in parallel, and the distances between the axes of the two battery cells (61) and the PCB board (51) are equal.

6. The handheld power tool according to claim 1, characterized in that: The number of the battery cells (61) is greater than two, and all the battery cells (61) are evenly distributed along the circumference of the extension line of the output shaft of the motor (2).

7. The handheld power tool according to claim 1, characterized in that: The PCB board (51) and the battery unit (6) are arranged closely together, and the projection of the battery cell (61) in a direction perpendicular to the PCB board (51) completely falls on the PCB board (51).

8. The handheld power tool according to claim 1, characterized in that: The motor (2) is connected to a first plug-in portion (8) via a wire (7), and the PCB board (51) is connected to a second plug-in portion, and the first plug-in portion (8) and the second plug-in portion are electrically connected in a pluggable manner.

9. The handheld electric tool according to claim 8, characterized in that: The first plug-in portion (8) and the second plug-in portion are both located on one radial side of the battery core (61), and the PCB board (51) is located on the other radial side of the battery core (61).

10. The handheld electric tool according to any one of claims 1 to 9, characterized in that: The handheld electric tool is an electric scissors.

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