Battery adapter for a cutting power tool

• US 11,179,787 B2
• Filed: 09/04/2019
• Issued: 11/23/2021
• Est. Priority Date: 10/30/2018
• Status: Active Grant

• Current Assignee: Makita Corporation
• Original Assignee: Makita Corporation
• Inventors: Yoshida, Yuto, Yamamura, Goh
• Primary Examiner(s): Alie, Ghassem
• Assistant Examiner(s): Ayala, Fernando A
• Application Number:
  US16/560,511
• Publication Number:
  US 20200130077A1
• Time in Patent Office: 811 Days
• CPC Class Codes: B23D 45/042 with the saw blade carried by a pivoted lever B23D45/028, B23D45/065 take precedence
• CPC Class Codes: B23D 45/048 the saw blade being adjustable according to angle of cut
• CPC Class Codes: B23D 45/14 for cutting otherwise than in a plane perpendicular to the axis of the stock, e.g. for making a mitred cut
• CPC Class Codes: B23D 47/00 Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts constructional features of these parts per se B23Q; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00
• CPC Class Codes: B23D 47/12 of drives for circular saw blades
• CPC Class Codes: B27B 5/29 Details; Component parts; Accessories
• CPC Class Codes: H01M 50/267 having means for adapting to batteries or cells of different types or different sizes

Abstract

A cutting machine reduces cost increase associated with production equipment and has design flexibility for different types of batteries. A cutting machine for cutting a workpiece includes a cutting machine body including a cutting blade, a motor that drives the cutting blade, and a motor housing accommodating the motor, and an adapter including a body holder attached to the cutting machine body and a battery holder in which a battery to power the motor is installable.

Claims

1. A miter saw cutting machine for cutting a workpiece, comprising:

a cutting machine body including a cutting blade, a motor configured to drive the cutting blade, and a motor housing accommodating the motor; and

an adapter having a substantially box-shape and including a body engagement surface that is adjacent to a surface of the cutting machine body that is not a surface of the motor housing, a body holder that extends from the body engagement surface and is directly attached to a part of the cutting machine body other than the motor housing, a first surface substantially perpendicular to the body engagement surface and located at a first edge of the body engagement surface, a positioning unit that extends from the first surface and positions the adapter with respect to the motor housing, a second surface substantially parallel to the first surface and located at a second edge of the body engagement surface, the second edge being opposite the first edge, and a battery holder that extends from the second surface and to which a battery to power the motor is installable, wherein the adapter is oriented substantially parallel to the motor housing and the adapter and the motor housing are oriented at an acute angle to the cutting blade.

2. The cutting machine according to claim 1, wherein

the motor housing includes a first rail parallel to a longitudinal direction of the motor housing, and

the adapter is placed along the motor housing with the first rail.

3. The cutting machine according to claim 2, wherein

the adapter includes

a controller configured to determine a voltage of the battery and control the motor, and

a terminal unit electrically connected to the motor through a lead wire.

4. The cutting machine according to claim 2, wherein

the motor housing includes a pair of first rails, and

the adapter includes a second rail to be fitted into the pair of the first rails with a clearance.

5. The cutting machine according to claim 4, wherein

the second rail has a T-shaped cross section, and

the second rail includes a standing portion arranged between the pair of the first rails.

6. The cutting machine according to claim 2, wherein

the adapter includes a pair of second rails parallel to a longitudinal direction of the adapter, and

the first rail is to be fitted into the pair of the second rails with a clearance.

7. The cutting machine according to claim 6, wherein

the first rail has a T-shaped cross section, and

the first rail includes a standing portion arranged between the pair of the second rails.

8. The cutting machine according to claim 1, wherein

the adapter includes

a controller configured to determine a voltage of the battery and control the motor, and

a terminal unit electrically connected to the motor through a lead wire.

9. The cutting machine according to claim 1, wherein

the motor housing includes

a motor fan rotatable by the motor to blow air for cooling the motor, and

a first ventilation hole through which the air blown by the motor fan passes, and the adapter has a second ventilation hole communicating with the first ventilation hole.

10. The cutting machine according to claim 9, wherein

the motor housing includes a first ventilation part having the first ventilation hole, and

the adapter includes the second ventilation hole and a second ventilation part into which the first ventilation part is fitted.

11. The cutting machine according to claim 10, wherein

the first ventilation part and the second ventilation part cooperate with each other to position the adapter with respect to the motor housing.

12. The cutting machine according to claim 1, wherein

the cutting machine body includes

a cutting blade cover covering the cutting blade, and

a handle grippable by a user and including a right handle part and a left handle part that are combinable and horizontally symmetrical, and

the left handle part, the right handle part, the motor housing, and the adapter are fastened to

the cutting blade cover with a plurality of screws placed parallel to each other.

13. The cutting machine according to claim 1, wherein

the adapter includes

a first adapter including a first battery holder in which a first battery with a first size is installable, and

a second adapter including a second battery holder in which a second battery with a second size is installable, and

the first adapter or the second adapter is selectively attachable to the cutting machine body.

14. The cutting machine according to claim 13, wherein

the first adapter includes the body holder attached to the cutting machine body, and

the second adapter includes a body holder with the same shape as the body holder of the first adapter.

15. The cutting machine according to claim 1, further comprising:

the battery.

16. The cutting machine according to claim 1, wherein

the cutting machine body includes a handle grippable by a user and including a right handle part and a left handle part that are combinable and horizontally symmetrical, and

the left handle part, the right handle part, the motor housing, and the adapter are integrated with a plurality of screws.

17. The cutting machine according to claim 16, wherein

the cutting machine body includes a cutting blade cover covering the cutting blade, and

the integrated four parts of the left handle part, the right handle part, the motor housing, and the adapter are attachable to the cutting blade cover.

18. The cutting machine according to claim 1, wherein the positioning unit is attachable to the motor housing.

19. A miter saw stationary tool placeable for use on a table or a floor, the miter saw stationary tool comprising a tool b:

a base placeable on the table or the floor;

a tool body supported on the base, the tool body including a cutting blade, the motor configured to drive the cutting blade, and a motor housing accommodating the motor; and

an adapter having a substantially box-shape and attached to the tool body, the adapter including a body engagement surface that is adjacent to a surface of the tool blade that is not a surface of the motor housing, a body holder that extends from the body engagement surface and is directly attached to a part of the tool body other than the motor housing, a first surface substantially perpendicular to the body engagement surface and located at a first edge of the body engagement surface, a positioning unit that extends from the first surface and positions the adapter with respect to the motor housing, a second surface substantially parallel to the first surface, and located at a second edge of the body engagement surface, the second edge being opposite the first edge, a battery holder that extends from the second surface and to which a battery to power a motor is installable, wherein the adapter is oriented substantially parallel to the motor housing and the adapter and the motor housing are oriented at an acute angle to the cutting blade.

20. A miter saw cutting machine for cutting a workpiece, comprising:

a cutting machine body including a cutting blade, a motor configured to drive the cutting blade, and a motor housing accommodating the motor; and

an adapter having a substantially box-shape and including a body engagement surface that is adjacent to and faces a cutting machine body surface of the cutting machine body that is not a surface of the motor housing, a body holder that extends outwardly from the body engagement surface toward the cutting machine body surface and is directly attached to a part of the cutting machine body other than the motor housing, a first surface substantially perpendicular to the body engagement surface and located at a first edge of the body engagement surface, a positioning unit that extends outwardly from the first surface and engages the cutting machine body to position the adapter with respect to the motor housing, a second surface substantially parallel to the first surface and located at a second edge of the body engagement surface, the second edge being opposite the first edge, and a battery holder that extends from the second surface and to which a battery to power the motor is installable, wherein the adapter is oriented substantially parallel to the motor housing and the adapter and the motor housing are oriented at an acute angle to the cutting blade.