Portable tool

• US 9,555,537 B2
• Filed: 10/31/2013
• Issued: 01/31/2017
• Est. Priority Date: 10/31/2012
• Status: Active Grant

• Current Assignee: Koki Holdings Co., Ltd.
• Original Assignee: Hitachi KOKI Company Limited (Koki Holdings Co., Ltd.)
• Inventors: Shibata, Shogo, Iwata, Kazutaka, Shimizu, Yasutaka
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US14/069,017
• Publication Number:
  US 20140116737A1
• Time in Patent Office: 1,188 Days
• Field of Search: 173/20, 173/21, 173/170, 173/217, 173/171, 173/47, 302/28, 302/774, 303/12, 30D/IG.1, 301/65, 310/47, 310/50, 388/808, 388/937, 388/838, 408/16
• US Class Current: 1/1
• CPC Class Codes: A01G 3/053 motor-driven
• CPC Class Codes: A01G 3/06 Hand-held edge trimmers or shears for lawns
• CPC Class Codes: B24B 23/005 Auxiliary devices used in connection with portable grinding machines, e.g. holders
• CPC Class Codes: B25F 5/00 Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
• CPC Class Codes: B25F 5/001 Gearings, speed selectors, clutches or the like specially adapted for rotary tools
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: B26B 21/4056 Sensors or controlling means
• CPC Class Codes: H01H 9/06 Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner

Abstract

A casing of a hedge clipper which is a portable tool is provided with a power source housing in which an electric motor is housed and a main handle held by a worker, and blades serving as a tip tool are provided to the casing. An operation display panel is provided on the main handle, and a driving information display unit which displays a battery remaining capacity and a rotation speed of an electric motor as a plurality of pieces of driving information is provided on the operation display panel. The selection of the information to be displayed is switched by the operation of an operation switch unit provided in the operation display panel.

Claims

1. A portable tool having a casing provided with a handle unit held by a worker and a power source housing which is located on a front side of the handle unit and houses a power source and a tip tool which is located on a front side relative to the power source housing and is driven by the power source, the portable tool comprising:

an operation display panel unit provided with a driving information display unit which displays driving information including at least a set speed of the power source and a remaining capacity of a battery to supply power to an electric motor serving as the power source; and

an operation switch unit which includes a single operation switch to select different driving information displayed on the driving information display unit,

wherein the operation display panel unit is disposed at a recessed position below a virtual line, in a longitudinal cross-section, connecting top parts of the casing, and display of the driving information display unit is switched between the set speed of the power source and the remaining capacity of the battery by an operation of the single operation switch.

2. The portable tool according to claim 1,

wherein the operation display panel unit is provided on an upper surface of the casing on a front side relative to the handle unit, and a worker can operate the operation switch unit while holding the handle unit.

3. The portable tool according to claim 2,

wherein the casing has an inclined part which faces toward the handle unit and inclines upward as the inclined part goes from the handle unit to the power source housing, and

the operation display panel unit is provided on the inclined part.

4. The portable tool according to claim 1,

wherein when the display of the driving information display unit is switched from the set speed of the power source to the remaining capacity of the battery by an operation of the single operation switch, the display of the driving information display unit is returned to the set speed of the power source by turning off the operation of the single operation switch.

5. The portable tool according to claim 1,

wherein setting of the set speed can be changed by the single operation switch, and

either one of the switching of the display contents of the driving information displayed on the driving information display unit and the change of the setting of the set speed is selected and carried out in accordance with an operation status of the single operation switch.

6. A portable tool having a casing provided with a power source housing in which a power source is housed and a handle held by a worker, the portable tool comprising:

an operation display panel unit provided with a driving information display unit which displays specific driving information in a plurality of pieces of driving information including at least a set speed of the power source and a remaining capacity of a battery to supply power to an electric motor serving as the power source; and

an operation switch unit which includes a single operation switch to select specific driving information displayed on the driving information display unit from among the plurality of pieces of driving information,

wherein display of the driving information display unit is switched between the set speed of the power source and the remaining capacity of the battery by an operation of the single operation switch.

7. The portable tool according to claim 6,

wherein setting of the set speed can be changed by the operation switch unit, and

either one of the switching of the display contents of the driving information to be displayed on the driving information display unit and the change of the setting of the set speed is selected and carried out in accordance with an operation status of the operation switch unit.

8. The portable tool according to claim 6,

wherein length of time of operating the operation switch unit is employed as an operation status of the operation switch unit, and display of the driving information is switched by the operation switch unit based on the length of time of operating the operation switch unit.

9. The portable tool according to claim 6,

wherein the number of operations of the operation switch unit is employed as an operation status of the operation switch unit, and display of the driving information is switched by the operation switch unit based on the number of operations.

10. The portable tool according to claim 6,

wherein the driving information display unit displays a life of the battery.

11. The portable tool according to claim 6,

wherein the driving information display unit displays a life of the electric motor.

12. The portable tool according to claim 6,

wherein the driving information display unit has a plurality of light emitting parts, and display contents of the driving information to be displayed on the driving information display unit change depending on the number of light emitting parts whose lights are turned on.

13. The portable tool according to claim 6,

wherein when the display of the driving information display unit is switched from the set speed of the power source to the remaining capacity of the battery by an operation of the single operation switch, the display of the driving information display unit is returned to the set speed of the power source by turning off the operation of the single operation switch.

14. A portable tool having a casing provided with a power source housing in which a power source is housed and a handle held by a worker, the portable tool comprising:

an operation display panel unit provided with a driving information display unit which displays specific driving information in a plurality of pieces of driving information including at least a set speed of the power source and a remaining capacity of a battery to supply power to an electric motor serving as the power source; and

an operation switch unit which includes a single operation switch to select specific driving information displayed on the driving information display unit from among the plurality of pieces of driving information,

wherein display of the set speed of the power source and display of the remaining capacity of the battery are associated with different operation statuses of the operation switch unit, and display contents of the driving information to be displayed on the driving information display unit are switched in accordance with the different operation statuses of the operation switch unit.

15. The portable tool according to claim 14,

wherein setting of the set speed can be changed by the single operation switch, and

either one of the switching of the display contents of the driving information displayed on the driving information display unit and the change of the setting of the set speed is selected and carried out in accordance with an operation status of the single operation switch.