CN210998536U

CN210998536U - Dust suction device

Info

Publication number: CN210998536U
Application number: CN201921533585.8U
Authority: CN
Inventors: 陆传洋
Original assignee: Nanjing Jiuchi Electromechanical Industry Co ltd
Current assignee: Nanjing Jiuchi Electromechanical Industry Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-07-14
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a dust suction device, which comprises a shell and a dust suction box, wherein the shell consists of a left half shell and a right half shell which are involutory, the dust suction box is detachably connected to the shell, and the rear part of the shell is provided with a motor chamber for accommodating a motor; the dust collection box is provided with a box body, an air inlet, an air outlet communicated with the motor chamber and a filtering device detachably connected with the air outlet, a stop piece is arranged on the box body, a blocking piece matched with the stop piece is arranged on the shell, and the stop piece is provided with a blocking position for blocking the blocking piece and a yielding position for yielding the blocking piece; when the filtering device is arranged in the box body, the stop piece is in the open position; the stop is in the blocking position when the filter device is not mounted to the cassette. Because the utility model discloses a stop part sets up on the box body of suction box, its simple structure, convenient assembling to accomplish when installing filter equipment and dodge, consequently very reliable and stable.

Description

Dust suction device

Technical Field

The utility model relates to a dust extraction, especially a dust extraction for hand-held type electric tool belongs to electric tool technical field.

Background

In electric tools such as electric hammers and impact hammers, a dust suction device is required to collect dust generated during machining of a workpiece. The dust produced by the machining operation not only affects the working environment, but also harms the health of the operators. Various dust suction devices have been proposed in the market, which can be mounted on a hand-held power tool and which avoid contamination by sucking in the dust generated.

A dust suction device for an electric tool has a housing to which a hose connected to an adapter penetrating a tool bit is connected, and a dust suction box detachably housed in the housing, the dust suction box having a first opening on an upstream side in a ventilation direction and a second opening on a downstream side, a filter being attached to the second opening, and air flowing in from the first opening is made to pass through the filter from a front surface of the filter and finally flow out from the second opening. Therefore, the dust which flows into the dust collection box together with the air is filtered and then is stored in the dust collection box. When a user neglects to install the filter, dust can enter the shell along with air, and further damage the motor; after the dust overflows the shell, the working environment is affected and the health of operators is harmed.

In response to the above problems, Milwaukee HAMMERVAC No.2715-DE has a metal stopper provided in its housing to block the dust box from being mounted on the housing of the dust extraction device when a user neglects to load the filter. Although the existing dust suction device can prevent a user from neglecting to install the filter, the structure of the existing dust suction device is too complex and inconvenient to install.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problems in the prior art, the dust suction device is simple in structure and convenient to assemble, and the problem that a user neglects to install a filter to damage the dust suction device can be effectively avoided.

In order to achieve the above purpose, the basic scheme of the dust suction device of the utility model is as follows: the dust collector comprises a shell consisting of left and right involutory half shells and a dust collection box detachably connected to the shell, wherein the rear part of the shell is provided with a motor chamber for accommodating a motor; the dust absorption box has box body, air inlet, with the gas outlet of motor room intercommunication and with the filter equipment of connection can be dismantled to the gas outlet, its characterized in that: the box body is provided with a stop piece, the shell is provided with a stop piece matched with the stop piece, and the stop piece is provided with a stop position for stopping the stop piece and an open position for opening the stop piece; when the filter device is installed in the box body, the stop piece is in the open position; the stop is in the blocking position when the filter device is not mounted to the cartridge.

Because the utility model discloses a stop part sets up on the box body of suction box, its simple structure, convenient assembling to accomplish when installing filter equipment and dodge, consequently very reliable and stable.

The utility model discloses a further perfection is, the backstop piece of stopper for having the boss, it is for blockking the piece to block the piece, works as the backstop piece is located when blockking the position, the top surface of boss with the bottom surface that blocks the piece contacts.

In a still further refinement of the present invention, the stop member is provided with a reset member therein for causing the reset member to move to the blocking position.

A further refinement of the present invention is that the restoring member is a spring or a magnet.

The utility model discloses still further perfection is, be provided with the same stop part on another lateral wall of box body, and be provided with corresponding piece that stops on another lateral wall that the shell is corresponding. .

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the three-dimensional exploded structure of the present invention.

Fig. 2 is a schematic structural view of the dust box and the right housing.

Fig. 3 is a schematic structural view of the dust suction box without the filter device.

Fig. 4 is a schematic view of the sectional structure a-a of fig. 3.

Fig. 5 is a schematic structural view of the left shell and the stopper block in the blocking position.

Fig. 6 is a schematic structural view of the left shell and the stop block at the yielding position.

Detailed Description

Example one

As shown in fig. 1 to 6, the vacuum cleaner of the present embodiment includes a housing formed by assembling right and left half-

section cases

11 and 12, a hose (not shown) connected to an adaptor penetrating a tool at the tip of an electric power tool is formed at an upper front portion of the housing, and a connection base 15 connected to a mounting portion of the electric power tool is formed at a lower rear portion of the housing. The suction fan is fixedly attached to an output shaft of the motor 13, has an unillustrated exhaust port on a side surface of the left case 11, and rotates together with the output shaft to form an air flow that is drawn from the intake port into the case and flows in the direction of the exhaust port.

Dust generated by the machining operation is sucked together with air from the air inlet by the suction force generated by the dust suction fan, flows into the dust box 2 through the air inlet 26, and is separated from the air in the dust box 2 by the filter device 22 and is stored therein. The air after the dust is separated enters the motor chamber 16 formed by the left and

right cases

11 and 12 and accommodating the motor 13 through the air outlet 27, and is discharged from the air outlet.

As shown in fig. 3 to 6, the filtering device 22 is installed at the air outlet 27 of the box body 21, a stop block 23 is arranged below the left side wall of the box body 21 of the dust collection box 2, and the stop block 23 can slide between a blocking position and a releasing position; as shown in fig. 2, when the filter device 22 is attached to the air outlet 27 of the dust box, the housing of the filter device is urged in a direction in which the stopper 23 is moved to the spaced position. When the filter 22 is fixed to the dust box 2 and the stop block 23 moves to the receding position, the stop block 14 on the inner wall of the left shell 11 and the boss of the stop block 23 are in the receding position (as shown in fig. 6), and at this time, the dust box 2 can be fixed to the housing by the locking button 25.

When the filter 22 is not mounted to the dust box, as shown in fig. 4, the stop block 23 moves to the blocking position under the elastic action of the spring 24 of the internal reset member, and the bottom surface of the stop block 14 on the inner wall of the left shell 11 contacts with the top surface of the boss of the stop block 23, so that the stop block 14 and the stop block 23 are in a position of relative interference (as shown in fig. 5), and at this time, the dust box 2 cannot completely enter the housing. The return element can be, in addition to a spring, a magnet or another return element with a force directed in the direction of the filter device.

If the user inserts the dust suction box 2 into the housing of the dust suction device without installing the filter device 22 in the dust suction box 2, the dust suction box 2 cannot be installed on the housing due to the interaction of the stop block 23 and the stop block 14, so that the motor room is effectively prevented from being polluted by dust without installing the filter device, and the motor is prevented from being damaged and cannot work.

Similarly, a stop block can be arranged below the right side wall of the box body 21 of the dust collection box 2, and the inner wall of the right shell 12 is provided with a stop block corresponding to the right side wall, so that the stop blocks are arranged on the left side wall and the right side wall of the dust collection box 2, and the force application is more uniform when a user installs the filter device 22.

In addition to the above embodiments, the present invention may have other embodiments. For example: the box body of the dust collection box can be composed of a main box body and a box cover with an air outlet; the following steps are repeated: the filtering device and the stopping structure are both arranged on the box cover; and so on. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. A dust extraction for a hand-held power tool comprises a housing consisting of right and left involutive half-shells (11, 12) and a dust box (2) detachably connected to the housing, the rear part of the housing having a motor chamber (16) accommodating a motor (13); the dust collection box is provided with a box body (21), an air inlet (26), an air outlet (27) communicated with the motor chamber and a filtering device (22) detachably connected with the air outlet, and is characterized in that: the box body is provided with a stop piece, the shell is provided with a stop piece matched with the stop piece, and the stop piece is provided with a stop position for stopping the stop piece and an open position for opening the stop piece; when the filter device is installed in the box body, the stop piece is in the open position; the stop is in the blocking position when the filter device is not mounted to the cartridge.

2. The suction device of claim 1, wherein: the stop piece is a stop block (23) with a boss, the stop piece is a stop block (14), and when the stop block is located at a stop position, the top surface of the boss is in contact with the bottom surface of the stop block.

3. The suction device of claim 2, wherein: the stop element is provided with a return element (24) which is arranged in such a way that it is brought into the blocking position.

4. The suction device of claim 3, wherein: the reset piece is a spring.

5. The suction device of claim 3, wherein: the reset piece is a magnet.

6. The dust extraction device of any one of claims 1-5, wherein: the other side wall of the box body is provided with the same stop piece, and the other side wall corresponding to the shell is provided with a corresponding stop piece.