CN218657057U

CN218657057U - Electric tool

Info

Publication number: CN218657057U
Application number: CN202222010180.4U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Youwei Technology Suzhou Co ltd
Current assignee: Youwei Technology Suzhou Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-03-21
Anticipated expiration: 2032-08-02

Abstract

The application provides an electric tool, which comprises a shell, a motor arranged in the shell, an output shaft driven by the motor and a battery pack for supplying power to the motor, wherein the motor directly drives the output shaft and is coaxially arranged with the output shaft; the shell comprises a main case, a battery pack mounting part and a holding part for connecting the main case and the battery pack mounting part, and the holding part and the main case are in a T shape; the motor is accommodated in the host case, the output shaft protrudes out of the host case, the battery pack mounting part is provided with a sliding groove extending along a first direction, the output shaft extends along a second direction and is parallel to the first direction, and the holding part extends along a third direction and is obliquely crossed with the mounting groove; the battery pack is configured to be mounted to the chute such that a length direction of the battery pack is parallel to or coincides with the first direction. The installation direction of the battery pack and the extension direction of the output shaft are set to be oblique, so that the size of the battery pack in the vertical direction of the two directions is small, interference between the battery pack and the arms of a user is avoided, and the operation comfort is improved.

Description

Electric tool

Technical Field

The application relates to the field of tools, in particular to an electric tool.

Background

Electric tools are widely used in industry, building and people's daily life. Taking a cutting machine as an example, the cutting machine is mainly used for cutting materials such as wood, ceramic tiles, steel and the like, and a common cutting machine is large in size, high in cutting efficiency, poor in portability and not suitable for occasions with low requirements on cutting capability, such as households and the like.

Therefore, a power tool is available on the market, in which the output shaft is directly driven by the motor, so that the cutting structure (particularly the transmission mechanism) is greatly simplified, and a small-capacity battery pack (usually in a plug-in structure, most of which is located in the machine body) is adopted for supplying power. However, the small-capacity battery pack has a large influence on cruising ability and cutting power, and cannot meet the requirements of users.

As shown in fig. 1, if a large-capacity battery pack B (usually in a sliding structure and exposed outside the machine body a) is directly selected, the exposed battery pack B has a large influence on the external dimension of the cutting machine due to the small size of the machine body, and may affect the holding of the arm of the user. When the cutting work is performed, the top of the battery pack 1 is likely to interfere with the arm of the user, which affects the comfort of the operation.

SUMMERY OF THE UTILITY MODEL

The application provides an electric tool for improving operation comfort.

Specifically, the application provides an electric tool, which comprises a shell, a motor arranged in the shell, an output shaft driven by the motor and a battery pack for supplying power to the motor, wherein the motor directly drives the output shaft and is coaxially arranged with the output shaft; the shell comprises a main case, a battery pack installation part and a holding part for connecting the main case and the battery pack installation part, and the holding part and the main case are in a T shape; the motor is accommodated in the main case, the output shaft protrudes out of the main case, the battery pack mounting part is provided with a mounting groove extending along a first direction, the output shaft extends along a second direction and is parallel to the first direction, and the holding part extends along a third direction and is obliquely crossed with the mounting groove; the battery pack is configured to be mounted to the chute such that a length direction of the battery pack is parallel to or coincides with the first direction.

Further, the main chassis extends along the second direction, the holding portion extends along a third direction, and the second direction is an extending direction of the motor shaft and is perpendicular to the third direction.

Further, the size of the holding part in the third direction is not less than 80mm and not more than 100mm.

Further, the circumference of the holding part is not less than 125mm and not more than 150mm.

Further, the battery pack mounting part comprises mounting ends and non-mounting ends which are arranged along a first direction, and the battery pack is assembled to the sliding groove from the mounting ends; the distance from the mounting end to the axis of the gripping portion is less than the distance from the non-mounting end to the axis of the gripping portion.

Further, when the battery pack is assembled on the battery pack mounting part, the size of the protrusion of the battery pack mounting part in the fourth direction from the holding part is not more than 20mm; the fourth direction is perpendicular or perpendicular to the first direction.

Further, the third direction forms an acute angle with the mounting groove.

Further, the axis of the holding part passes through the battery pack mounting part.

Further, the electric tool comprises a first shield and a second shield, wherein the first shield is assembled on the main machine shell and encloses a space for accommodating the output shaft with the second shield; the second shield includes a shielding portion facing the output shaft, and the space is formed between the shielding portion and the first shield.

Further, the first cover is rotatably assembled to the main chassis, and the second cover is detachably assembled to the first cover.

In this application, set up to the skew through the installation direction with the battery package and the portion of gripping extending direction for the battery package in the protrusion in the size of the portion of gripping is less, thereby avoids battery package and user's arm to interfere, improves the operation travelling comfort.

Drawings

Fig. 1 is a schematic diagram of a user operating a conventional power tool.

Fig. 2 is a perspective view of a compact cutting machine according to an embodiment of the present application.

Fig. 3 is an exploded schematic view of the small size cutter shown in fig. 2.

Fig. 4 is a schematic top view of the small size cutting machine shown in fig. 2.

Fig. 5 is a schematic view of a user operating the compact cutting machine shown in fig. 2.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides an electric tool (taking a small-sized cutting machine as an example, the electric tool can also be used as an angle grinder), the electric tool comprises a shell, a motor arranged in the shell, an output shaft driven by the motor and a battery pack for supplying power to the motor, wherein the motor directly drives the output shaft and is coaxially arranged with the output shaft; the shell comprises a main case, a battery pack installation part and a holding part for connecting the main case and the battery pack installation part, and the holding part and the main case are in a T shape; the motor is accommodated in the main case, the output shaft protrudes out of the main case, the battery pack mounting part is provided with a mounting groove extending along a first direction, and the extending direction of the output shaft extends along a second direction and is parallel to the first direction; the battery pack is configured to be mounted to the mounting groove such that a length direction of the battery pack is parallel to or coincides with the first direction.

Referring to fig. 2 and 3, the electric tool of the present embodiment, for example, a cutting machine (as an angle grinder when a grinding sheet is mounted), includes a housing 1, a motor 2 disposed in the housing 1, an output shaft 3 driven by the motor 2, and a battery pack 4 for supplying power to the motor 2, wherein the motor 2 directly drives the output shaft 3 and is disposed coaxially with the output shaft 3, and the direct driving can avoid energy loss during a transmission process and also simplify a structure of the whole machine.

The casing 1 includes host computer shell 11, battery package installation department 13 and connects the portion of gripping 12 of host computer shell 11 and battery package installation department 13, the portion of gripping 12 with host computer shell 11 is the T shape to make the complete machine focus be close to the axis of the portion of gripping, promote and grip the feeling. The motor 2 is contained in the main case 11, the output shaft 3 protrudes out of the main case 11 and is used for driving the working head 5, and the working head 5 can be fixed on the output shaft 3 through a nut 6.

The main chassis 11, the motor shaft and the output shaft 3 extend along a second direction Y, and the holding portion 12 extends along a third direction X, where the second direction Y is perpendicular to the third direction X. The motor 2 is not arranged in the holding portion 12, which is beneficial to reducing the size of the holding portion 12, in this embodiment, the circumference of the holding portion 12 is 125-150 mm, the palm length of a chinese male is about 160-180 mm, and the palm length of a chinese female is about 150-170 mm, so that a user (whether male or female) can grasp the holding portion 12 in a relatively comfortable manner, which is beneficial to improving the comfort of operation, and the reason why the circumference of the holding portion 12 is not too small is that a certain space needs to be reserved for a circuit board (not shown); the length L of the holding portion 12 (i.e., the dimension in the third direction X) is 80-100 mm, which ensures that the user can hold the holding portion completely with his hand, and also ensures that the dimension in the third direction is small, thereby facilitating the miniaturization of the product.

The battery pack mounting portion 13 is provided with a mounting groove 131 for mounting the battery pack, and the battery pack 4 is configured to be mounted in the mounting groove 131, such that the length direction of the battery pack 4 is parallel to or coincides with the first direction O (in this embodiment, coincidence), and the extending direction (first direction O) of the mounting groove 131 is parallel to the extending direction (second direction Y) of the output shaft 3. The vertical direction of the two directions (i.e. the third direction X) intersects with the two directions and obliquely intersects with the mounting groove 131, the extending direction of the holding portion 12 and the length direction of the battery pack (i.e. the extending direction of the mounting groove) make the dimension of the battery pack protruding from the fourth direction Z (the fourth direction is perpendicular to the second direction) smaller, and the dimension of the fourth direction Z is too large and interferes with the arm of the user, so that the interference between the battery pack and the arm of the user can be avoided (refer to fig. 5), and the operation comfort is improved. The length direction is understood to mean the direction in which the element has its largest dimension. Preferably, the third direction X forms an acute angle with the mounting groove.

Referring to fig. 4, in a fourth direction Z perpendicular to the first direction O and perpendicular to the opposite surface of the first direction, a protruding dimension d of the battery pack mounting portion 131 from the holding portion 12 is not greater than 20mm, so as to reduce the possibility of interference between the battery pack 4 and the arm of the user. Preferably, the battery pack mounting portion 131 does not protrude from the grip portion 12 in the fourth direction Z, so that interference between the battery pack and the arm of the user is fundamentally prevented.

The battery pack mounting portion 13 includes a mounting end 132 and a non-mounting end 133 arranged in the first direction O, and the battery pack 4 is assembled from the mounting end 132 to the mounting groove 131. The mounting end 132 is spaced from the axis of the grip portion 12 a distance less than the non-mounting end 133. In other words, the battery pack 4 is assembled from the end closer to the axis of the grip portion 12 to the end farther from the axis of the grip portion 12, which is more suitable for the general habit of the user.

The axis of the holding part 12 is oblique to the mounting groove 131 (i.e. the battery pack), so that the battery pack mounting part 13 is prevented from being too protruded in a certain direction, and the overall dimension of the whole machine is further reduced.

The electric power tool further includes a first cover 61 and a second cover 62, the first cover 61 is assembled to the main housing 11, the second cover 62 is assembled to the first cover 12, and a space 60 for accommodating the output shaft 4 is defined by the first cover 61 and the second cover 62. The first shield 61 is similar to a shield of an existing angle grinder, the second shield 62 covers the first shield 61 and includes a blocking portion 621 facing the output shaft, and the space 60 is formed between the blocking portion 621 and the first shield 61.

Preferably, the first cover 61 is rotatably assembled to the main chassis 11, the second cover 62 is detachably assembled to the first cover 61, and the second cover 62 is detachably assembled to the first cover 61 through a locking portion 622 in this embodiment. When only the first shield 61 is mounted, the power tool is mainly used as an angle grinder; after the first shield 61 and the second shield are mounted, the power tool is used as a cutter, and the shielding portion is used to block chips so as not to injure a user.

In this application, set up to the skew through the mounting groove direction with the battery package and the portion extending direction that grips to avoid battery package and user's arm to interfere, improve the operation travelling comfort.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. An electric tool is characterized in that the electric tool is provided with a power supply unit,

the electric tool comprises a shell, a motor arranged in the shell, an output shaft driven by the motor and a battery pack for supplying power to the motor, wherein the motor directly drives the output shaft and is coaxially arranged with the output shaft;

the shell comprises a main case, a battery pack mounting part and a holding part for connecting the main case and the battery pack mounting part, and the holding part and the main case are in a T shape;

the motor is accommodated in the host case, the output shaft protrudes out of the host case, the battery pack mounting part is provided with a mounting groove extending along a first direction, the output shaft extends along a second direction and is parallel to the first direction, and the holding part extends along a third direction and is obliquely crossed with the mounting groove;

the battery pack is configured to be detachably mounted to the mounting groove such that a length direction of the battery pack is parallel to or coincides with the first direction.

2. The power tool of claim 1, wherein the second direction is perpendicular to the third direction.

3. The power tool of claim 2, wherein: the size of the holding part in the third direction is not less than 80mm and not more than 100mm.

4. The power tool according to claim 3, wherein a circumference of the grip portion is not less than 125mm and not more than 150mm.

5. The power tool of claim 2, wherein the battery pack mounting portion includes a mounting end and a non-mounting end arranged in a first direction, the battery pack being assembled from the mounting end to the mounting groove;

the distance from the mounting end to the axis of the gripping portion is less than the distance from the non-mounting end to the axis of the gripping portion.

6. The electric power tool according to claim 5, wherein a dimension of the battery pack mounting portion protruding from the grip portion in the fourth direction is not more than 20mm when the battery pack is assembled to the battery pack mounting portion;

the fourth direction is perpendicular or perpendicular to the first direction.

7. The power tool of claim 2, wherein the third direction is at an acute angle to the mounting slot.

8. The power tool of claim 1, wherein an axis of the grip portion passes through the battery pack mounting portion.

9. The power tool of claim 1, wherein the power tool includes a first shield and a second shield, the first shield being assembled to the main housing and enclosing a space accommodating the output shaft with the second shield;

the second shield includes a shielding portion facing the output shaft, and the space is formed between the shielding portion and the first shield.

10. The power tool of claim 9, wherein the first guard is rotatably assembled to the main housing, and the second guard is detachably assembled to the first guard.