Power tool with modular drive system and method of assembly of modular drive system
First Claim
1. A power tool including a modular drive system, comprising:
- a tool housing for receiving the modular drive system;
a modular drive motor contained within said tool housing and including a motor housing and a rotary drive shaft;
a modular transmission contained within said tool housing and including a transmission housing which contains a planetary gear system having a set of planetary gears and a drive gear including an aperture for slidable insertion of said drive shaft;
one or more guide members formed on and extending from one of said motor and transmission housings for slidable insertion into one or more guide holes in the other of said motor and transmission housings when said drive shaft is inserted in said aperture in said drive gear to align said motor and transmission housings with each other, each guide member being frictionally engaged in the corresponding guide hole to retain said motor and transmission together to provide the modular drive system for installation in said tool housing; and
retainer means formed on said tool housing for engaging said motor and transmission housings to retain said motor and said transmission assembled together inside said tool housing.
0 Assignments
0 Petitions
Accused Products
Abstract
A power tool (20) includes a modular drive system in which the motor (22) and transmission (24) consist of separate self-contained modular units which can be assembled together by simply sliding and rotating the motor housing (42) and the transmission housing (70) relative to each other. The motor (22) has a D-shaped rotary drive shaft (44) which is inserted into a D-shaped aperture (86) in the drive gear (84) of a planetary gear system (80) contained within the transmission housing (70). Guide pins (92) extending from the transmission housing (70) are inserted into guide holes (94) in the motor housing (42) when the D-shaped drive shaft (44) is inserted into the D-shaped aperture (86) in the drive gear (84) to align the housings (42,70) with each other. A bushing (46) at the front of the motor housing (42) is inserted into a central opening (76) at the rear of the transmission housing (70) to couple the housings (42,70) together.
-
Citations
22 Claims
-
1. A power tool including a modular drive system, comprising:
-
a tool housing for receiving the modular drive system; a modular drive motor contained within said tool housing and including a motor housing and a rotary drive shaft; a modular transmission contained within said tool housing and including a transmission housing which contains a planetary gear system having a set of planetary gears and a drive gear including an aperture for slidable insertion of said drive shaft; one or more guide members formed on and extending from one of said motor and transmission housings for slidable insertion into one or more guide holes in the other of said motor and transmission housings when said drive shaft is inserted in said aperture in said drive gear to align said motor and transmission housings with each other, each guide member being frictionally engaged in the corresponding guide hole to retain said motor and transmission together to provide the modular drive system for installation in said tool housing; and
retainer means formed on said tool housing for engaging said motor and transmission housings to retain said motor and said transmission assembled together inside said tool housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A power tool including a modular drive system, comprising:
-
a tool housing for receiving the modular drive system; a modular drive motor contained within said tool housing and including a motor housing and a rotary drive shaft, said motor housing including an annular bushing extending therefrom and surrounding said drive shaft; a modular transmission contained within said tool housing and including a transmission housing which contains a planetary gear system having a set of planetary gears and a drive gear including an aperture for slidable insertion of said drive shaft, said transmission housing having an opening formed therein for slidably receiving said annular bushing; a plurality of guide members formed on and extending from one of said motor and transmission housings for slidable insertion into a plurality of guide holes in the other of said motor and transmission housings when said drive shaft is inserted in said aperture in said drive gear to align said motor and transmission housings with each other, said guide members being frictionally engaged in said guide holes and said annular bushing being frictionally engaged in said opening to retain said motor and transmission together to provide the modular drive system for installation as a unit in said tool housing; and retainer means formed on said tool housing for engaging said motor and transmission housings to retain said motor and said transmission assembled together inside said tool housing. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A power tool including a modular drive system, comprising:
-
a tool housing for receiving the modular drive system; a modular drive motor contained within said tool housing and including a motor housing and a rotary drive shaft; a modular transmission contained within said tool housing and including a transmission housing which contains a planetary gear system having a set of planetary gears and a drive gear including an aperture for slidable insertion of said drive shaft; one or more guide members extending from one of said motor and transmission housings for insertion into one or more guide holes in the other of Said motor and transmission housings when said drive shaft is inserted in said aperture in said drive gear to align said motor and transmission housings with each other and to retain said motor and transmission together to provide the modular drive system for installation in said tool housing; and
whereinsaid modular drive motor has a flux ring surrounding said motor housing and provided with a longitudinal gap therein; and said modular transmission has an alignment tab on said transmission housing which is aligned with said longitudinal gap when said drive motor and said transmission are assembled in the proper orientation for installation in said power tool housing.
-
-
22. A power tool including a modular drive system, comprising:
-
a tool housing for receiving the modular drive system; a modular drive motor contained within said tool housing and including a motor housing and a rotary drive shaft; a modular transmission contained within said tool housing and including a transmission housing which contains a planetary gear system having a set of planetary gears and a drive gear including an aperture for slidable insertion of said drive shaft; a plurality of guide members extending from one of said motor and transmission housings for insertion into a plurality of guide holes in the other of said motor and transmission housings when said drive shaft is inserted in said aperture in said drive gear to align said motor and transmission housings with each other and to retain said motor and transmission together to provide the modular drive system for installation as a unit in said tool housing; and
whereinsaid modular drive motor has a flux ring surrounding said motor housing and provided with a longitudinal gap therein; and said modular transmission has an alignment tab on said transmission housing which is aligned with said longitudinal gap when said drive motor and said transmission are assembled in the proper orientation for installation in said power tool housing.
-
Specification