CN105673528B

CN105673528B - Electric tool

Info

Publication number: CN105673528B
Application number: CN201410659754.8A
Authority: CN
Inventors: 刘嘉晋
Original assignee: Create Technological Ltd Co Of Outdoor Products Of Department
Current assignee: Create Technological Ltd Co Of Outdoor Products Of Department
Priority date: 2014-11-18
Filing date: 2014-11-18
Publication date: 2020-02-04
Anticipated expiration: 2034-11-18
Also published as: CN105673528A

Abstract

The invention discloses an electric tool, comprising: a main body having a motor and a fan; at least one air duct fitting mounted on the body at a position generally forward thereof; and a battery pack configured to supply power to the motor; the battery pack is disposed at a position substantially rearward and downward on the main body. When in operation, the battery pack is configured to lower the overall center of gravity of the body and drive the air hose fitting closer to an operating surface. The electric tool has low gravity center, is beneficial to moving the electric tool when a user operates the electric tool, and avoids the air outlet/suction opening of the air pipe accessory of the electric tool from moving away from the operation surface, thereby improving the working efficiency.

Description

Electric tool

Technical Field

The present invention relates to power tools and, more particularly, to a battery-powered hand-held dual-purpose blower/suction fan.

Background

When the existing blower is used, a motor fan is used for sucking and spraying air so as to clean the air or tidy objects. For example, in the event of a garden, a user may use a blower having a long tube to blow dead leaves in one direction for easy grooming. Cordless blowers provide greater convenience to the user by eliminating the length of the cable and thereby more conveniently managing a larger space. However, the cordless blower requires a battery pack having a certain capacity to be connected to supply power to the motor, and generally, the battery pack for the power tool has a certain number of batteries and a certain weight, and in some designs, the battery pack may be connected and mounted at a position disadvantageous to the operation due to a lack of consideration of the center of gravity of the power tool as a whole, so that the user may need to spend more effort to operate the power tool, thereby greatly reducing the working efficiency.

Disclosure of Invention

Accordingly, embodiments of the present invention provide a new power tool to overcome the above technical problems.

In one aspect, the present invention provides a power tool comprising: a main body having a motor and a fan; at least one air duct fitting mounted on the body at a position generally forward thereof; and a battery pack configured to supply power to the motor; the battery pack is disposed at a position substantially rearward and downward on the main body.

Preferably, when in operation, the battery pack is configured to lower the overall centre of gravity of the body and urge the air duct fitting towards an operating surface.

Preferably, the battery pack is disposed at a position substantially below the motor.

Preferably, the battery pack is disposed adjacent to the motor.

Preferably, the battery pack is arranged in parallel to the motor.

Preferably, the battery pack is configured to be parallel to the at least one body mounted windpipe fitting.

Preferably, the main body is provided with a handle, and the handle is provided at a position substantially above the main body.

Preferably, the handle, the motor, and the battery pack form an arrangement axis substantially parallel to a direction of gravity.

Preferably, the motor and fan define an operating axis parallel to the axis of rotation of the motor, the operating axis being arranged substantially perpendicular to the arrangement axis.

Preferably, the battery pack is configured to be flush-mounted on the main body with respect to the motor.

Preferably, the battery pack is arranged in alignment with the electric motor.

Preferably, the battery pack is configured to be detachably mounted on the main body.

Preferably, a battery pack slot is provided on the main body, the battery pack slot having a battery pack locking mechanism configured to lock the battery pack.

Preferably, the battery pack slot is disposed in a generally rear lower housing portion of the main body.

Preferably, the electric tool is at least one of a blower, a suction fan, a dust collector and a dual-purpose blowing/suction fan.

The power tool of the present invention thus provides a number of advantages. One of the advantages is that the battery pack is disposed at a position substantially below the motor, and thus does not change the overall center of gravity of the main body to any other disadvantageous position such as above, behind, or left/right of the motor. The battery pack is arranged at a position approximately below the motor, so that the overall gravity center of the main body can be further lowered, a user can move the electric tool when operating the electric tool, and the air outlet/air inlet opening of the air pipe accessory of the electric tool is prevented from being moved away from the operation surface, so that the working efficiency is improved. In addition, the battery pack of the electric tool of the present invention is disposed adjacent to the motor, so that the structure of the main body and the weight distribution of the components can be made more compact, and thus the center of gravity of the whole can be further lowered, and at the same time, the battery is disposed substantially rearward and downward of the main body, so that the whole structure of the electric tool can be made more compact and more easily operated.

Drawings

A further understanding of the nature and advantages of the present invention may be realized by reference to the remaining portions of the specification and the drawings; the same components are numbered the same throughout the several views. In some cases, a sublabel is placed after a reference numeral and hyphen to denote one of many similar components. When a reference numeral is used to refer to a particular feature, but not necessarily any particular element, it is intended to refer to that feature.

FIG. 1 illustrates a power tool according to one embodiment of the present invention;

FIG. 2 illustrates the power tool of FIG. 1, wherein the power tool is used in a suction mode;

FIG. 3 illustrates the power tool of FIG. 1, wherein the power tool is used in a blowing mode;

FIG. 4 illustrates a schematic view of a battery pack assembled to a power tool according to one embodiment of the present invention;

FIG. 5 illustrates a rear bottom view of the power tool of FIG. 1;

FIG. 6 illustrates the power tool of FIG. 5 with the battery pack removed;

FIG. 7 illustrates an enlarged view of the battery pack slot of the power tool of FIG. 1;

fig. 8 shows an enlarged view of the battery pack of the electric power tool shown in fig. 1.

Detailed Description

Various other benefits and advantages provided by various embodiments of the present invention will be readily apparent from the following description.

Referring to fig. 1, the present invention provides an electric power tool including: a main body having a motor and a fan; at least one air duct fitting mounted on the body at a position generally forward thereof; and a battery pack configured to supply power to the motor; the method is characterized in that: the battery pack is disposed at a position substantially rearward and downward on the main body.

As shown in fig. 1, the power tool may be a blower/suction fan 100 having a blower/suction fan body 102 with a motor 104, the motor 104 being connected to and powering a fan (not shown), the motor 104 and fan defining an operating axis (axis a). The blower/suction fan body 102 is also provided with a handle 106 for a user to hold, the handle 106 being disposed at a substantially upper position on the body 102 for easy operation. Preferably, the handle 106 is arranged to form an arrangement axis (axis B) substantially parallel to the direction of gravity with the motor 104 and the battery pack 108 to ensure that the overall center of gravity of the main body is located below the handle 106. The operating axis (axis a) is substantially perpendicular to the arrangement axis (axis B), and therefore, the overall center of gravity of the main body 102 can be maintained below the handle 106 during operation. Optionally, the main body 102 is provided with a secondary handle so that the user can operate the power tool 100 with both hands.

In addition, air hose fittings 110,112 are provided at a generally forward location on the body 102 to fluidly connect the air hose fittings 110,112 to the body 102. Preferably, the air duct fittings 110,112 are removable and may include at least one suction duct, blower duct or other fitting for delivering an air stream, as shown in fig. 2 and 3, the blow/suction blower 100 may be configured to operate with a removable suction duct in a suction mode 200 or a removable blower duct in a blowing mode 300. . Air is drawn into the blower/suction fan body 102 through an end of an air hose fitting, such as a suction duct 110, and passes the air to the outlet 120 and or blower pipe 112 to complete the air cycle. Optionally, the blower/suction fan body 102 is configured with a cover 114. When the blower/suction fan body 102 is not connected to any air duct accessory, the air duct accessory connection opening 122 is closed to prevent injury by a user from contacting internal components (e.g., a fan, not shown) during operation.

The blower/suction fan 100 is configured with a battery pack 108 to provide power to drive the blower/suction fan 100. The battery pack 108 is disposed substantially at the rear lower position on the main body 102. Preferably, the battery pack 108 is disposed adjacent to the motor 104, such as in a substantially downward position, for connection to the motor 104 and provides power to the motor 104 to drive the fan, which generates suction pressure to draw air through the end of the air hose fitting 110 or an opening (not shown) in the cover 114 into the interior of the body.

The battery pack 108 is disposed adjacent the motor 104 to provide a more compact weight distribution of the various components disposed on the body 102, thereby lowering the overall center of gravity of the body 102 and urging the air duct fittings 110,112 toward the operating surface. As shown in FIG. 1, the battery pack 108 can be configured to be parallel to at least one air duct fitting 110,112 mounted to the body 102, the battery pack 108 and the air duct fitting 110,112 being configured to be parallel to each other about an axis A. Thus, because the handle 106 is configured to form an axis of configuration (axis B) with the motor 104 and battery pack 108 that is generally parallel to the direction of gravity, when the user lifts the handle 106, the ends of the air hose fittings 110,112 naturally face toward the ground for pumping work so that no additional effort is expended to balance the position of the air hose fittings. Optionally, the battery pack 108 may also be configured parallel to the motor 104.

It will be appreciated that when the battery pack 108 is disposed away from the disposition axis (axis B), the weight of the battery pack 108 may cause operational difficulties in order to offset the overall center of gravity of the main body 102 to increase the swinging or offset of the air duct fittings 110,112 from the object of suction during operation, and the user may need to expend additional effort to adjust the position of the suction/blowing ports of the air duct fittings 110,112 to align the object of suction or the direction of blowing air.

Preferably, the battery pack 108 is removably disposed on the main body 102, and the main body 102 is provided with a battery pack slot 116 for mounting the battery pack 108, the battery pack slot 116 being disposed in a substantially rear-lower housing portion of the main body 102. As shown in fig. 1 and 4 to 7, a battery pack slot 116 is provided at the bottom of the motor at the rear lower side of the main body, and the battery pack slot 116 has a battery pack locking mechanism configured to lock the battery pack. The battery locking mechanism may include notches 702 that mate with the battery housing, snap strips 704, and/or fasteners 706 (shown in fig. 7) to lock the position of the battery 108 in a snap, engagement, or the like. Optionally, other types of locking members may be employed in embodiments of the present invention, such as button snaps, sliding switches, and the like. Optionally, the battery card slot 116 may also be a component with a cavity to receive the battery therein, or a cover to cover the battery card slot 116 to prevent the battery pack 108 from being dislodged or loosened. As shown in fig. 4, the battery pack 108 is slidably inserted or secured in the battery pack slot 116 and locked under the motor 104 by a battery pack locking mechanism to prevent the battery pack 108 from being displaced or released during operation, resulting in an interruption of power supply. When the power in the battery pack 108 is depleted, the user may unlock the locking mechanism to remove the battery pack 108 for replacement or charging, or to charge using a charging module provided with the body of the power tool.

Alternatively, the battery pack 108 may be non-removable or integrally mounted to the structure on the main body.

Alternatively, the battery pack 108 may be configured to be flush mounted to the body 102 relative to the motor 104, i.e., at least one surface of the battery pack 108 is flush with at least one surface of the motor 104, or the battery pack 108 may be disposed in alignment with the motor 104. This design further maintains the center of gravity of the body 102 in a position on the axis B, or below the handle 106.

Preferably, the battery pack 108 may be of the rechargeable, disposable, removable, stationary, etc. type, and additional equivalents may be used without departing from the essence of the invention.

Referring to fig. 1, when a user operates the electric power tool 100, for example, for use as a hair dryer, the user may hold the handle 106 and simultaneously place the roller 118 connected to the blower pipe on an operating surface such as the floor, and move the electric power tool 100 with the aid of the roller 118 to facilitate a sweeping operation. Because the motor in the body 102 of the power tool 100 is heavier than the other components, the overall center of gravity of the body 102 is located at the position of the motor 104, and the battery pack 108 attached to the body 102 at a position below the motor 104 also has a certain weight, thereby lowering the overall center of gravity of the body 102 and urging the roller 118 against the ground during operation, so that the barrel 110 can approach the ground without moving the barrel 110 away from the ground due to movement of the body 102.

If the user uses the power tool 110 as a suction fan or a dust collector 200, the blow pipe 112 may be removed, only the suction pipe 110 may be attached to the main body 102, and a collection bag may be attached to the outlet 120 of the main body 102 for collecting the sucked dust and/or debris. Similarly, because the heavier components of the main body 102, such as the motor 104 within the main body and the battery pack 108 attached to the main body 102 at a location below the motor 104, are located below the handle 106 held by the user, the user can access the suction duct 110 to the ground by virtue of the center of gravity of the main body 102 without moving the suction duct 110 away from the ground due to movement of the main body 102.

It can be understood that if the battery pack is disposed on the main body at a position different from the most preferable position provided by the embodiment of the present invention, such as behind the motor, when the user holds and operates the power tool, the battery pack with a certain weight will move the overall center of gravity of the main body of the power tool backward, which is easy to make the air outlet/inlet of the blowing/sucking pipe of the air pipe fitting of the power tool raise and move away from the ground due to the overall rotation of the power tool caused by the partial downward falling of the battery, so that the user needs to apply an additional force to overcome the backward movement of the overall center of gravity of the main body to prevent the air outlet/inlet from moving away from the ground due to the overall rotation of the power tool. If the battery pack is disposed on either the left or right side of the motor, the center of gravity of the main body of the power tool is shifted to one side, and the power tool is liable to rotate left or right to move the air inlet/outlet from the ground, which is also disadvantageous to the user. Therefore, the battery pack is arranged at a position approximately at the rear lower part of the main body or approximately at the lower part of the motor, so that the gravity center of the main body can be kept at the position of the motor or below the position of the motor, and unnecessary rotation of the electric tool during operation is effectively avoided.

Those skilled in the art will recognize that the power tool of the present invention may be other types of power tools besides the blowing/sucking fan mentioned in the embodiments of the present invention, including but not limited to dual-purpose blowing and sucking fans, blowers, suction cleaners, suction devices, blowers, suction fans, leaf blowers, electric drills, grinders, cutters, hammers, electric saws, etc.

Thus, having described several embodiments, it will be recognized by those of skill in the art that various modifications, additional structures, and equivalents may be used without departing from the spirit of the invention. Accordingly, the above description should not be taken as limiting the scope of the invention, which is defined by the claims of the present application.

Claims

1. A power tool, comprising:

a main body having a motor and a fan, the main body being provided with a handle, the handle being disposed at an upper position on the main body;

the first air pipe accessory is detachably arranged at the front position on the main body and is an air suction pipe;

a second air hose attachment removably mounted to said body at a forward location thereon, said second air hose attachment being a blowpipe, wherein said second air hose attachment is removably mounted to said body adjacent said first air hose attachment, said second air hose attachment being adjacent an operative surface when said power tool is operated;

a roller arrangement connected to the second air duct fitting, the roller arrangement being arranged to rest on an operating surface when the power tool is in operation; and

a battery pack configured to supply power to the motor;

wherein the battery pack is disposed at a position above and below the main body and is disposed in alignment with the electric motor and flush-mounted to the main body with respect to the electric motor, whereby the handle forms an arrangement axis parallel to the direction of gravity with the electric motor and the battery pack to ensure that the center of gravity of the main body is located at a position below the handle and to maintain the center of gravity on the arrangement axis; and

wherein, when the power tool is operated in a blow-through mode, the body is configured to be disconnected from the first air duct fitting and the cover on the body is configured to close the air duct fitting connection opening on the body, preventing a user from contacting components inside the body during operation.

2. The power tool of claim 1, wherein the battery pack is configured to be parallel to the motor.

3. The power tool of claim 1, wherein the battery pack is configured to be parallel to the first and second air duct fittings mounted to the body.

4. The power tool of claim 1, wherein the motor and fan define an operational axis parallel to a rotational axis of the motor, the operational axis being configured to be substantially perpendicular to the configuration axis.

5. The power tool of claim 1, wherein the battery pack is configured to be removably mounted to the body.

6. The power tool of claim 5, wherein the body defines a battery pack slot having a battery pack locking mechanism configured to lock the battery pack.

7. The power tool of claim 6, wherein the battery pack slot is disposed in a generally rear and lower housing portion of the body.

8. The power tool of any one of claims 1 to 7, wherein the power tool is a dual-purpose blower/suction fan.