JP2019208614A - Dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collector capable of suppressing deterioration of movement operability in a configuration that operates with electric power supplied from a battery pack. A dust collector 1 operates with power supplied from a battery pack 40. The battery pack 40 is housed in a battery housing chamber 50 provided in the head unit 20. The battery accommodating chamber 50 and the wall 51 that separates the inside and the outside of the battery accommodating chamber 50 extend below the upper opening of the filter device 15 in the vertical direction, and in the radial direction of the drive shaft of the motor 23. Located inside the upper opening of the. [Selection diagram] Figure 1

Description

  The present invention relates to a dust collector that operates with electric power of a battery pack.

  The following Patent Document 1 discloses a cordless type dust collector that operates with electric power of a battery pack that is detachably mounted. By using the battery pack as a power source, the dust collector can be driven without being restricted by the power cord, and the moving operability during work is improved.

Japanese Patent Laying-Open No. 2015-208577

  In order to ensure a long driving time of the dust collector, it is necessary to use a battery pack having a large capacity. A large-capacity battery pack is large in weight and volume, and thus has a large effect on the center of gravity and size of the dust collector. When the center of gravity of the dust collector is increased or the size is increased by the battery pack, the operability of the dust collector is deteriorated.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a dust collector capable of suppressing deterioration in movement operability in a configuration operating with power supplied from a battery pack.

One embodiment of the present invention is a dust collector. This dust collector
A motor having a drive shaft extending in the vertical direction;
A head portion for housing the motor;
A tank unit provided below the head unit, and having a suction port, a tank opening closed by the head unit, and a dust storage chamber for storing dust sucked from the intake port;
A filter unit that is provided in the dust storage chamber of the tank unit and forms a filter internal space in which a filter opening is formed on the upper side;
A battery housing chamber for housing a battery pack that is provided in the head portion and supplies electric power to the motor;
At least one of the battery housing chamber and the wall portion separating the inside and the outside of the battery housing chamber extends below the filter opening in the vertical direction, and is inside the filter opening in the radial direction of the drive shaft. To position.

The head portion includes a motor casing that houses the motor, a first terminal for connection to the first battery pack, and a second terminal for connection to the second battery pack,
The first and second terminals are arranged in a first direction perpendicular to the drive shaft, and are arranged separately on both sides of the motor casing in the first direction, and a second perpendicular to the drive shaft and the first direction. It may be arranged to at least partially overlap the motor casing in the direction.

  It should be noted that any combination of the above-described constituent elements, and those obtained by converting the expression of the present invention between methods and systems are also effective as aspects of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the dust collector which can suppress the deterioration of movement operativity can be provided in the structure which operate | moves with the electric power supplied from a battery pack.

The right sectional view of dust collector 1 concerning an embodiment of the invention. FIG. 2 is an enlarged view around the battery housing chamber 50 of FIG. 1. The top view of the dust collector.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

  1 and 3 define the front-rear, top-bottom, and left-right directions in the dust collector 1 that are orthogonal to each other. The dust collector 1 is an electric dust collector, and includes a tank unit 10 and a head unit 20 as a main body. The tank part 10 and the head part 20 are separable from each other.

  The tank portion 10 has a bottomed cylindrical shape with an open top, and has a horizontal cross section as shown in FIG. 3 that is substantially square (in the example shown, a rounded square or rectangle). The tank unit 10 has a suction port 11 on the front side surface, and a hose (not shown) can be detachably connected to the suction port 11. A cylindrical filter device 15 that separates dust (filters sucked dust) when air sucked from the suction port 11 passes is provided in the tank unit 10.

  The filter device 15 as the filter unit includes an annular elastic body 16 such as rubber and a filter 17 formed of a cloth having a fine mesh on the outer peripheral surface. The upper part of the filter 17 is sewn over the lower part of the elastic body 16 and integrated. The elastic body 16 is sandwiched between the tank portion 10 and the head portion 20 and hermetically closes the space between the tank portion 10 and the head portion 20. The filter device 15 has a substantially truncated cone side shape whose axis is substantially parallel to the vertical direction, and surrounds the dust collecting fan 25.

  Air can enter the filter inner space 14 inside the filter device 15 by passing through the outer peripheral surface of the filter 17, but dust contained in the air cannot pass through the mesh of the filter 17 and is filtered by the outer peripheral surface of the filter 17. Then, it adheres to the outer peripheral surface of the filter 17 or falls downward. The space in the tank unit 10 is a dust storage chamber 13, and the dust separated by the filter device 15 is stored in a space outside the filter device 15 in the dust storage chamber 13.

  The head unit 20 is detachably fixed to the upper portion of the tank unit 10 by, for example, a clamp mechanism (not shown). The head portion 20 closes the upper opening of the tank portion 10, that is, the tank opening. A handle 27 for carrying the dust collector 1 is provided on the upper surface of the head unit 20. The head unit 20 includes a motor 23, a motor cooling fan 24, and a dust collection fan 25 inside the head housing 21.

  The motor 23 is disposed in the head portion 20 so that its drive shaft extends in the vertical direction. Here, the motor 23 is a brushless motor, and a switching element substrate 26 on which a switching element for supplying a drive current to the motor 23 is mounted is provided on the upper portion of the motor 23 substantially perpendicularly to the vertical direction. The motor cooling fan 24 and the dust collecting fan 25 are attached to the drive shaft of the motor 23 and are rotationally driven by the motor 23. The motor cooling fan 24 is an axial fan located directly under the motor 23 and generates a downward airflow. The dust collection fan 25 is a centrifugal fan provided below the motor cooling fan 24.

  As shown in FIG. 3, an operation panel 30 for switching the operation of the dust collector 1 by the user is provided on the front surface of the head unit 20. The operation panel 30 includes a main power switch 31, a strength switching switch 32, a single action / linkage switching switch 33, a battery remaining amount display switch 34, and a battery remaining amount display unit 35. The single action is a mode in which the dust collector 1 operates alone, and the interlock is a power supply by connecting another electric tool (not shown) to the dust collector 1 with a power cable. This is a mode (function) in which the dust collector 1 is driven when power supply to another power tool is detected, that is, when another power tool is driven. As shown in FIG. 3, the dust collector 1 is a cordless type that uses two battery packs 40 that are detachably mounted. When the battery remaining amount display switch 34 is pressed, each battery pack is displayed on the remaining battery amount display portion 35. The remaining amount of 40 is displayed in a plurality of stages by LEDs or the like.

  As shown in FIGS. 1 and 3, a motor casing 29 that houses a motor 23 is provided in the head portion 20. As shown in FIG. 3, a terminal holding plate 56 and a predetermined number of terminals 57 are provided on the left and right sides of the motor casing 29, respectively. The left and right terminal holding plates 56 and the predetermined number of terminals 57 as viewed from the motor casing 29 are the first terminal holding plate and the first terminal, and the other terminal holding plate 56 and the predetermined number of terminals 57 are the second terminal holding plate. And a second terminal. The left and right terminal holding plates 56 are parallel to each other. The terminal 57 is a terminal for electrical connection with the terminal of the battery pack 40 and is held by the terminal holding plate 56. The battery pack 40 is slidably mounted from above by the engagement of its own rail portion 41 and the rail receiving portion 55 provided on the head portion 20, whereby the terminal 57 on the dust collector 1 side and the terminal of the battery pack 40 are mounted. Are in contact with each other and are electrically connected to each other. The battery pack 40 can be removed by pulling upward while operating the latch operation portion 42.

  The battery pack 40 is housed and held in a battery housing chamber 50 provided in the head unit 20. The two battery packs 40 are mounted so that they are aligned in the left-right direction, and the front-rear and vertical positions are equal and parallel to each other. The battery housing chamber 50 is a space separated from the outside by the wall portion 51 and the lid body 52. The lid 52 is swingably supported by the head housing 21 and can open and close the battery housing chamber 50. The lid body 52 can be locked in a closed state by a hook 53 as a locking member.

  The battery housing chamber 50 extends below the upper opening (hereinafter also referred to as “filter opening”) of the filter device 15 in the vertical direction, and is located inside the filter opening in the radial direction of the drive shaft of the motor 23. . 3, a two-dot chain line indicating the filter device 15 indicates an inner edge of the upper surface of the elastic body 16, that is, an inner edge of the filter opening. In the present embodiment, both the outer surface and the inner surface of the wall portion 51 that separates the inside and the outside of the battery storage chamber 50 extend below the filter opening in the vertical direction. As shown in FIG. 3, when viewed from the motor casing 29, one of the left and right terminal holding plates 56 and the predetermined number of terminals 57 and the other terminal holding plate 56 and the predetermined number of terminals 57 are the left and right directions as the first direction. And arranged so as to at least partially overlap the motor casing 29 in the front-rear direction as the second direction. Further, the front-rear direction position of the battery pack 40 and the front-rear direction position of the motor casing 29 partially overlap each other.

  When the motor 23 is driven in the dust collector 1, the motor cooling fan 24 and the dust collection fan 25 are rotationally driven. Due to the rotation of the dust collection fan 25, the inside of the tank unit 10 becomes negative pressure, and a suction force is generated at the suction port 11. Then, dust is sucked into the tank unit 10 from the suction port 11 together with air. Thereafter, dust and air are separated by the filter 17, and the dust is stored in a space outside the filter 17 in the dust chamber 13. On the other hand, air passes through the outer peripheral surface of the filter 17 and enters the filter inner space 14, and passes through an opening (not shown) on the lower surface of the fan cover 28 constituting a part of the head housing 21 from below to the dust collecting fan 25. The air is sucked in and exhausted through a space separated from the motor 23. Dust is collected on the outer peripheral surface of the filter 17 and stored in the dust storage chamber 13.

  According to the present embodiment, the following operational effects can be achieved.

(1) Since the battery pack 40 and the battery storage chamber 50 extend below the filter opening, the battery pack 40 increases the center of gravity of the dust collector 1 and increases the size of the dust collector 1 in the height direction. It can suppress and the deterioration of the movement operativity of the dust collector 1 can be suppressed.

(2) Since the battery pack 40 and the battery housing chamber 50 are located inside the filter opening in the radial direction of the drive shaft of the motor 23, the battery pack 40 can suppress the size of the dust collector 1 from increasing in the radial direction, and the dust collector The deterioration of the movement operability of 1 can be suppressed.

(3) A set of the terminal holding plate 56 and a predetermined number of terminals 57 is arranged in the left-right direction, arranged separately on both sides of the motor casing 29 in the left-right direction, and at least partially overlaps the motor casing 29 in the front-rear direction. Therefore, as compared with the case where the set of the terminal holding plate 56 and the predetermined number of terminals 57 does not overlap the motor casing 29 in the front-rear direction, the size increase in the front-rear direction of the dust collector 1 can be suppressed, and the left and right battery packs can be suppressed. The distance in the left-right direction of 40 increases, and it is easy to put the finger into the latch operation unit 42.

  The present invention has been described above by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way.

1 dust collector,
DESCRIPTION OF SYMBOLS 10 Tank part, 11 Suction port (hose attachment port), 13 Dust storage chamber, 14 Filter inner space, 15 Filter apparatus, 16 Elastic body, 17 Filter,
20 head (main body), 21 head housing, 23 motor (brushless motor), 24 motor cooling fan, 25 dust collecting fan, 26 switching element substrate, 27 handle, 28 fan cover, 29 motor casing,
30 operation panel, 31 main power switch, 32 strength change switch (tactile switch), 33 single action / interlocking change switch, 34 battery remaining amount display switch, 35 battery remaining amount display section,
40 battery pack, 41 rail section, 42 latch operation section,
50 battery compartment, 51 wall, 52 lid, 53 hook, 55 rail receiving part, 56 terminal holding plate, 57 terminal

Claims (2)

A motor having a drive shaft extending in the vertical direction;
A head portion for housing the motor;
A tank unit provided below the head unit, and having a suction port, a tank opening closed by the head unit, and a dust storage chamber for storing dust sucked from the intake port;
A filter unit that is provided in the dust storage chamber of the tank unit and forms a filter internal space in which a filter opening is formed on the upper side;
A battery housing chamber for housing a battery pack that is provided in the head portion and supplies electric power to the motor;
At least one of the battery housing chamber and the wall portion separating the inside and the outside of the battery housing chamber extends below the filter opening in the vertical direction, and is inside the filter opening in the radial direction of the drive shaft. Located in the dust collector. The head portion includes a motor casing that houses the motor, a first terminal for connection to the first battery pack, and a second terminal for connection to the second battery pack,
The first and second terminals are arranged in a first direction perpendicular to the drive shaft, and are arranged separately on both sides of the motor casing in the first direction, and a second perpendicular to the drive shaft and the first direction. The dust collector according to claim 1, wherein the dust collector is disposed so as to at least partially overlap the motor casing in a direction.

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