Power tool (makita) gas news uk

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The present application claims priority to Japanese patent application serial numbers 2016-215421 filed on Nov. 2, 2016 and 2017-078387 filed on Apr. 11, 2017, the contents of both of which are incorporated fully herein by reference. TECHNICAL FIELD

In some power tools, such as the rechargeable grinders disclosed in Japanese Laid-open Patent Publication 2015-174214 and US 2015/0263592, a grip part is formed on a housing, a battery pack is mounted on a battery-mount part, which is provided rearward of the grip part, and drive power is supplied by the battery pack. This housing comprises a pair of half housing mating parts (housing halves), which have been divided in the left and right direction and are assembled (joined) to one another by screws that are inserted and extend in the left-right direction. SUMMARY

To enable, e.g., continuous use over a longer period of time, power tools have been developed in recent years that have two battery-mount parts on the housing for two battery packs to be respectively mounted thereon, so that the energy from both battery packs may be simultaneously used to operate the power tool, thereby increasing the power capacity and/or power output of the power tool. In such power tools, if the housing having the battery-mount parts is formed as a left-right divided structure, then it is necessary to provide an intermediate structure between the left and right half housings, which intermediate structure forms a part between the left and right battery-mount parts, in order to dispose the two battery-mount parts side-by-side in the left-right direction. Thereby, the mold structure for forming the left and right half housings becomes complex and, moreover, the part count also increases, which leads to an increase in cost. In addition, when electrical components are installed, assembly becomes very difficult.

Accordingly, in one aspect of the present teachings, a power tool has two battery-mount parts disposed side-by-side in the left-right direction of the power tool. The housing can be manufactured at a relatively low cost and without a complicated housing shape.

In another aspect of the present teachings, a power tool includes: a motor housing that houses a motor; a grip housing coupled to the motor housing in the front-rear direction and having a grip part; and battery-mount parts formed on the grip housing and on which battery packs is mountable. The grip housing is formed by assembling (joining) two housing halves, which are divided in the up-down direction of the power tool.

In another aspect of the present teachings, the housing halves, which are divided in the up-down direction, may be assembled by inserting, and then fastening, one or more screws from a first one of the housing halves, either an upper housing half or a lower housing half, into a second one of the housing halves.

In another aspect of the present teachings, a power tool includes: a motor; a head part disposed on a front side of the motor; a grip part disposed on a rear side of the motor and comprising a switch lever; and a battery-mount part disposed on a rear side of the grip part and on which a battery pack is mountable. When the battery pack is mounted on the battery-pack mount part, the overall center of gravity of the power tool is located within a range that extends 30 mm forward of a front end of the switch lever to 30 mm rearward of the front end of the switch lever.

In another aspect of the present teachings, the power tool has two battery-mount parts disposed on the rear side of the grip part and two battery packs are respectively mounted on the two battery-mount parts. In such an embodiment, the overall center of gravity of the power tool is preferably set to a location 15 mm forward of the front end of the switch lever.

In another aspect of the present teachings if the grip housing is formed by assembling (joining) the two housing halves, which are divided in the up-down direction of the power tool, the two battery-mount parts can be disposed side-by-side in the left-right direction while simplifying assembly and without complicating the mold shape for forming the grip housing.

In another aspect of the present teachings, if the housing halves, which are divided in the up-down direction, are assembled by screwing one or more screws from a first one of the housings into a second one of the housings, the upper and lower housings can be assembled easily.

In another aspect of the present teachings, if the switch lever for manipulating the switch ON and OFF is provided on the first one of the housings, the switch lever can be easily assembled in the first one of the housings, which becomes the upper side at the time of assembly.

In another aspect of the present teachings, if the holding part that holds the controller is provided in the second one of the housings, the controller can be easily assembled in the second one of the housings, which becomes the lower side at the time of assembly.

FIGS. 7A-7F are explanatory diagrams of the vibration-isolating rubber ring, in which FIG. 7A is a front view, FIG. 7B is a rear view, FIG. 7C is a top view, FIG. 7D is a bottom view, FIG. 7E is a side view, and FIG. 7F is a center cross-sectional view.