Work machine

Patent metadata

Field	Value
Publication number	US-2023278119-A1
Application number	US-202118015077-A
Country	US
Kind code	A1
Filing date	Jul 9, 2021
Priority date	Jul 15, 2020
Publication date	Sep 7, 2023
Grant date	—

Abstract

A work machine according to the present invention optimally collects work chips, such as dust, produced during work. In a circular saw 10 , a sawdust discharge port 27 H and a cover opening 27 J are formed in an inner cover 27 , and a dust collecting chamber inlet 62 L 1 and a dust collecting chamber outlet 62 L 2 are formed in a dust collecting case 60 . Furthermore, at least a portion of the dust collecting chamber inlet 62 L 1 and at least a portion of the dust collecting chamber outlet 62 L 2 are arranged at the same position in the vertical direction.

First claim

1 . A work machine, comprising:
a base formed in a plate shape; a housing supported by the base on one side in a plate thickness direction of the base and accommodating a motor for driving a tip tool; and a dust collecting structure comprising a dust collecting chamber capable of collecting work chips produced by driving the tip tool, wherein the dust collecting structure is provided with an inlet serving as an entrance of the dust collecting chamber, an inflow part connected with the inlet and serving as a passage of the work chips, and an outlet for delivering air in the dust collecting chamber to a space where the tip tool is driven, and at least a part of the inlet and at least a part of the outlet are arranged at the same position in the plate thickness direction of the base.

2 . The work machine according to claim 1 , wherein
the base is formed with a through-hole for making a part of the tip tool protrude to the other side in the plate thickness direction of the base, the housing is connected to an adjustment mechanism capable of adjusting a protrusion amount of the tip tool from the through-hole, and at least a part of the inlet and at least a part of the outlet are arranged at the same position in the plate thickness direction of the base at least when the protrusion amount of the tip tool is the maximum.

3 . The work machine according to claim 1 , wherein
the tip tool is a disk-shaped circular saw blade, the dust collecting structure comprises a cover member that covers the tip tool and that is provided in the housing, and the cover member covers the circular saw blade from one side in the plate thickness direction of the base.

4 . The work machine according to claim 3 , wherein
the inlet and the outlet are arranged side by side in the plate thickness direction of the circular saw blade.

5 . The work machine according to claim 3 , wherein
the first opening is arranged upstream of the second opening in a rotational direction of the circular saw blade.

6 . (canceled)

7 . The work machine according to claim 3 , wherein
an area of the inlet is 80% to 120% of an area of the outlet.

8 . The work machine according to claim 7 , wherein
the dust collecting case is provided with a partition wall that partitions the inflow part and the outflow part.

9 . The work machine according to claim 8 , wherein
the dust collecting case is provided with a guide part that partitions the inflow part and the outflow part in a direction different from the partition wall.

10 . The work machine according to claim 9 , wherein
sawdust or air discharged from the inlet to the dust collecting chamber is guided by the guide part in a direction away from the outlet.

11 . (canceled)

12 . (canceled)

13 . A work machine that performs processing work in a forward direction, the work machine having a dust collection structure that collects dust produced by the processing work, in which the dust collection structure includes a dust collecting chamber for storing dust, a transfer part having an inflow part that delivers dust to the storage part and an outflow part that discharges air in the dust collecting chamber to the outside of the dust collection structure, a first partition part connected to a lower part of the dust collecting chamber and extending upward to partition the dust collecting chamber and the transfer part, and a communication part positioned above an upper end of the first partition part and communicating between the dust collecting chamber and the transfer part, wherein
the communication part is provided with an inlet connected to the inflow part and an outlet connected to the outflow part, and is configured such that positions of one end of the inlet and one end of the outlet in a left-and-right direction are different from each other.

14 . The work machine according to claim 13 , wherein
at least a part of the inlet and at least a part of the outlet are configured to be arranged at different positions in the left-and-right direction or at the same position in an up-and-down direction.

15 . The work machine according to claim 13 , wherein
the transfer part is provided with a second partition part that partitions the inflow part and the outflow part in a front-and-rear direction, and a third partition part that partitions the inflow part and the outflow part in the left-and-right direction.

16 . The work machine according to claim 3 , wherein
the dust collecting structure comprises a dust collecting case configured to be detachable from the housing, and the inlet and the outlet are provided on the dust collecting case.

17 . The work machine according to claim 16 , wherein
the cover member is provided with a first opening for delivering the work chips to the dust collecting chamber and a second opening for delivering air in the dust collecting chamber to the inside of the cover member, the inflow part connects the inlet and the first opening, and the dust collecting case has an outflow part connecting the outlet and the second opening, and the inflow part.

18 . A work machine, comprising:
a base formed in a plate shape; a housing supported by the base on one side in a plate thickness direction of the base and accommodating a motor for driving a tip tool; and a dust collecting structure comprising a dust collecting chamber capable of collecting work chips produced by driving the tip tool, wherein the dust collecting structure is provided with an inlet serving as an entrance of the dust collecting chamber, an inflow part connected with the inlet and serving as a passage of the work chips, and an outlet for delivering air in the dust collecting chamber to a space where the tip tool is driven, the inlet and the outlet are provided on one side of the dust collecting case in the plate thickness direction, and at least a part of the inlet and at least a part of the outlet are arranged at the same position in the plate thickness direction of the base.

Assignees

• Koki Holdings Co Ltd

Inventors

• Tagami Hiroyuki
• Ichihashi Naoto

Classifications

• B23D59/0064 Primary

  by suction · CPC title

• B25F5/02 Primary

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title

• B27B9/00

  Portable power-driven circular saws for manual operation (details or components, e.g. handles, casings, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title

• B23D59/006 Primary

  for removing or collecting chips · CPC title

• B27G3/00

  Arrangements for removing bark-zones, chips, waste, or dust, specially designed for use in connection with wood-working machine or in wood-working plants {(B23Q11/0042 takes precedence)} · CPC title