Stamped shell sheet metal frame module for a power tool

Claim 2

A motor and transmission subframe adapted to be mounted in a main tool housing comprising: first and second plate-like frame members each having generally planar bodies formed of stampable sheet material and being substantial mirror images of one another, said planar bodies being in contiguous engagement; motor receiving means in each of said bodies for receiving a motor therein, said motor receiving means including generally complementary cut outs in said frame members; aligned stamped means in both of said frame members for receiving motor bearings, said stamped motor bearing receiving means comprising complementary struck out portions in the bodies of said frame members; means in both of said frame members for receiving a transmission for operative connection to said motor; stamped means in both of said frame members for receiving transmission bearings, said stamped transmission bearing receiving means comprising complementary struck out portions in said bodies; and means for rigidifying both of said frame members, said rigidifying means comprising elongated portions of each of said bodies extending outwardly from the plane of the respective body.

Claim 3

The subframe of claim 24 wherein at least some of said bearing receiving means are defined by complementary stamped, semi-spherically struck portions in said frame members defining spherical bearing receiving recesses between said frame members.

Claim 4

The subframe of claim 24 wherein at least some of said bearing receiving means comprise complementary stamped, semi-cylindrical struck portions in said frame members defining cylindrical bearing receiving recesses between said frame members.

Claim 5

The subframe according to claim 1 wherein said rigidifying means comprise outwardly extending flanges at the sides of said frame members; and further including means engaging adjacent flanges of said frame members for securing the frame members together.

Claim 6

The subframe of claim 1 wherein said frame members are stamped of sheet metal.

Claim 7

The subframe of claim 5 wherein said rigidifying means comprise stiffening ribs stamped in each of said frame members.

Claim 8

A sheet metal motor and transmission subframe as defined in claim 1, wherein said frame members are sheet metal and generally rectangular in configuration and together define a frame assembly, said frame assembly having parallel longitudinally extending side edges adapted to be received and mounted in a main housing.

Claim 9

A motor and transmission subframe adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means in each of said frame members for receiving a motor therein, means in both of said frame members for receiving motor bearings, means in both of said frame members for receiving a transmission for operative connection to said motor; and means in both of said members for receiving transmission bearings, one of said frame members having a greater width than the other of said frame members with the sides thereof terminating in reverse portions returned about and gripping the sides of said other frame member; said frame members otherwise being mirror images of one another.

Claim 10

A motor and transmission subframe adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means in each of said frame members for receiving a motor therein, means in both of said frame members for receiving motor bearings, means in both of said frame members for receiving a transmission for operative connection to said motor; and means in both of said members for receiving transmission bearings, one of said frame members having a greater width than the other of said frame members with the sides thereof terminating in reverse portions returned about and gripping the sides of said other frame member; said frame members otherwise being mirror images of one another.

Claim 11

A motor and transmission frame adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being formed of stampable sheet material as substantial mirror images of one another and having portions thereof in contiguous engagement, stamped means on each of said frame members for receiving a motor therein, stamped meAns in both of said frame members receiving motor bearings, stamped means in both of said frame members for receiving a transmission for operative connection to said motor; stamped means in both of said members for receiving transmission bearings, said motor receiving means including stamped cut outs in both of said frame members, one of said members further including a pair of stamped struck out portions on opposite sides of said cut out and adapted to receive motor brush mounting means.

Claim 12

A motor and transmission frame adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being formed of stampable sheet material as substantial mirror images of one another and having portions thereof in contiguous engagement, stamped means on each of said frame members for receiving a motor therein, stamped meAns in both of said frame members receiving motor bearings, stamped means in both of said frame members for receiving a transmission for operative connection to said motor; stamped means in both of said members for receiving transmission bearings, said motor receiving means including stamped cut outs in both of said frame members, one of said members further including a pair of stamped struck out portions on opposite sides of said cut out and adapted to receive motor brush mounting means.

Claim 13

A subframe according to claim 9 wherein said frame members are mirror images of one another save for said pair of struck out portions.

Claim 14

A motor and transmission subframe adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means in each of said frame members for receiving a motor therein, means in both of said frame members for receiving motor bearings, means in both of said frame members for receiving a transmission for operative connection to said motor, means in both of said members for receiving transmission bearings, and means for securing said frame members together, said securing means comprising struck eye portions in said frame members, said frame members further including cut outs for receiving the eye portions of the other frame member and securing rods extending through the eye portion of one frame member and in engagement with the other frame member adjacent the cut out thereof.

Claim 15

A motor and transmission subframe adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means in each of said frame members for receiving a motor therein, means in both of said frame members for receiving motor bearings, means in both of said frame members for receiving a transmission for operative connection to said motor, means in both of said members for receiving transmission bearings, and means for securing said frame members together, said securing means comprising struck eye portions in said frame members, said frame members further including cut outs for receiving the eye portions of the other frame member and securing rods extending through the eye portion of one frame member and in engagement with the other frame member adjacent the cut out thereof.

Claim 16

A motor and transmission subframe adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means in each of said frame members for receiving a motor therein, means in both of said frame members for receiving motor bearings, means in both of said frame members for receiving a transmission for operative connection to said motor; and means in both of said members for receiving transmission bearings, the sides of said frame members terminating in outwardly extending flanges and further including means comprising a plurality of C-shaped clips associated with the adjacent flanges of said frame member for securing the frame members together.

Claim 17

A motor and transmission subframe adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means in each of said frame members for receiving a motor therein, means in both of said frame members for receiving motor bearings, means in both of said frame members for receiving a transmission for operative connection to said motor; and means in both of said members for receiving transmission bearings, the sides of said frame members terminating in outwardly extending flanges and further including means comprising a plurality of C-shaped clips associated with the adjacent flanges of said frame member for securing the frame members together.

Claim 18

A motor and transmission frame adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being formed of stampable sheet material as substantial mirror images of one another and having portions thereof in contiguous engagement, stamped means on each of said frame members for receiving a motor therein, stamped means in both of said frame members receiving motor bearings, stamped means in both of said frame members for receiving a transmission for operative connection to said motor; stamped means in both of said members for receiving transmission bearings, said frame members being formed of sheet metal and in contiguous engagement throughout a substantial portion of the periphery thereof, said motor receiving means including a first stamped cut out portion in said frame members, said first cut out portion encompassing a major area of said frame members, said motor bearing receiving means including aligned portions in said sheet metal member struck from the planar configuration of the frame members.

Claim 19

A motor and transmission frame adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being formed of stampable sheet material as substantial mirror images of one another and having portions thereof in contiguous engagement, stamped means on each of said frame members for receiving a motor therein, stamped means in both of said frame members receiving motor bearings, stamped means in both of said frame members for receiving a transmission for operative connection to said motor; stamped means in both of said members for receiving transmission bearings, said frame members being formed of sheet metal and in contiguous engagement throughout a substantial portion of the periphery thereof, said motor receiving means including a first stamped cut out portion in said frame members, said first cut out portion encompassing a major area of said frame members, said motor bearing receiving means including aligned portions in said sheet metal member struck from the planar configuration of the frame members.

Claim 20

A motor and transmission frame adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being formed of stampable sheet material as substantial mirror images of one another and having portions thereof in contiguous engagement, stamped means on each of said frame members for receiving a motor therein, stamped means in both of said frame members recEiving motor bearings, stamped means in both of said frame members for receiving a transmission for operative connection to said motor; stamped means in both of the said members for receiving transmission bearings, said frame members being formed of sheet metal and in contiguous engagement throughout a substantial portion of the periphery thereof, said transmission receiving means including a stamped cut out portion in said sheet metal frame members, said transmission bearing means including aligned portions in said sheet metal member struck from the planar configuration of the frame members.

Claim 21

A motor and transmission frame adapted to be mounted in a main tool housing comprising: a first plate-like frame member, a second plate-like frame member, said first and second frame members being formed of stampable sheet material as substantial mirror images of one another and having portions thereof in contiguous engagement, stamped means on each of said frame members for receiving a motor therein, stamped means in both of said frame members recEiving motor bearings, stamped means in both of said frame members for receiving a transmission for operative connection to said motor; stamped means in both of the said members for receiving transmission bearings, said frame members being formed of sheet metal and in contiguous engagement throughout a substantial portion of the periphery thereof, said transmission receiving means including a stamped cut out portion in said sheet metal frame members, said transmission bearing means including aligned portions in said sheet metal member struck from the planar configuration of the frame members.

Claim 22

A sheet metal motor and transmission module, comprising: a pair of stamped sheet metal plates, one of said plates being a substantial mirror image of said other plate, each of said plates having relatively larger and smaller cut out portions extending therethrough with the larger cut out portions being predominantly in one end portion of respective ones of said plates, said smaller cut out portions being completely in the other end portions of respective ones of said plates, two semi-spherically shaped portions struck outwardly from each plate and each pair of said semi-spherically shaped portions being positioned in alignment with each other in opposite edges of the larger cut out portion thereof, an electric motor positioned in said larger cut out portion having an output shaft, spherically shaped bearings on the output shaft nesting in said pair of aligned semi-spherically shaped portions adjacent said larger cut out, two gears drivingly connected to said output shaft of the motor and with each other, shafts supporting said gears, spherically shaped bearing means carried by said gear shafts, two semi-spherically shaped portions struck outwardly from each plate adjacent each end of each of said gear shafts adjacent the smaller cut out portion, said bearing means nesting in the semi-spherically shaped portions of the plates adjacent said smaller cut out portion, one of said gear shafts being an output for rotatably driving a member fastened thereto, brush mounting grooves in said mating plates adjacent said motor, brush holders and brushes nested in said grooves, and means for securing said sheet metal plates together for holding said motor and gear means assembled ready for incorporation in a motor driven instrument.

Claim 23

A sheet metal motor and transmission module, comprising: a pair of stamped sheet metal plates, one of said plates being a substantial mirror image of said other plate, each of said plates having relatively larger and smaller cut out portions extending therethrough with the larger cut out portions being predominantly in one end portion of respective ones of said plates, said smaller cut out portions being completely in the other end portions of respective ones of said plates, two semi-spherically shaped portions struck outwardly from each plate and each pair of said semi-spherically shaped portions being positioned in alignment with each other in opposite edges of the larger cut out portion thereof, an electric motor positioned in said larger cut out portion having an output shaft, spherically shaped bearings on the output shaft nesting in said pair of aligned semi-spherically shaped portions adjacent said larger cut out, two gears drivingly connected to said output shaft of the motor and with each other, shafts supporting said gears, spherically shaped bearing means carried by said gear shafts, two semi-spherically shaped portions struck outwardly from each plate adjacent each end of each of said gear shafts adjacent the smaller cut out portion, said bearing means nesting in the semi-spherically shaped portions of the plates adjacent said smaller cut out portion, one of said gear shafts being an output for rotatably driving a member fastened thereto, brush mounting grooves in said mating plates adjacent said motor, brush holders and brushes nested in said grooves, and means for securing said sheet metal plates together for holding said motor and gear means assembled ready for incorporation in a motor driven instrument.

Claim 24

A motor and transmission subframe assembly to be mounted in a main tool housing, comprising: a first plate-like frame member of generally planar configuration, a second plate-like frame member of generally planar configuration, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means for receiving a motor in said frame members, motor bearing receiving means in said frame members, transmission receiving means in said frame members, transmission bearing receiving means in said frame members, and flanges on each of said frame members and extending longitudinally along opposed sides of respective ones of said frame members to rigidify the same, each of said flanges being directed outwardly from its respective frame member and in a direction away from the other of the frame members.

Claim 25

A motor and transmission subframe assembly to be mounted in a main tool housing, comprising: a first plate-like frame member of generally planar configuration, a second plate-like frame member of generally planar configuration, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means for receiving a motor in said frame members, motor bearing receiving means in said frame members, transmission receiving means in said frame members, transmission bearing receiving means in said frame members, and flanges on each of said frame members and extending longitudinally along opposed sides of respective ones of said frame members to rigidify the same, each of said flanges being directed outwardly from its respective frame member and in a direction away from the other of the frame members.

Claim 26

A motor and transmission subframe assembly to be mounted in a main tool housing comprising: a first plate-like frame member of generally planar configuration, a second plate-like frame member of generally planar configuration, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means for receiving a motor in said frame members, motor bearing receiving means in said frame members, transmission receiving means in said frame members, transmission bearing receiving means in said frame members, flanges extending longitudinally along the sides of said frame members to rigidify the same, said motor receiving means comprising complementary cut outs in said frame members defining an opening for receiving a motor, one of said frame members Further including a pair of struck out portions confronting said opening and being located oppositely thereabout, said struck out portions in conjunction with the other frame member defining a pair of brush holder receiving spaces; said bearing receiving means comprising bearing receiving recesses defined by complementary aligned struck out portions in said frame members.

Claim 27

A motor and transmission subframe assembly to be mounted in a main tool housing comprising: a first plate-like frame member of generally planar configuration, a second plate-like frame member of generally planar configuration, said first and second frame members being substantial mirror images of one another and having portions thereof in contiguous engagement, means for receiving a motor in said frame members, motor bearing receiving means in said frame members, transmission receiving means in said frame members, transmission bearing receiving means in said frame members, flanges extending longitudinally along the sides of said frame members to rigidify the same, said motor receiving means comprising complementary cut outs in said frame members defining an opening for receiving a motor, one of said frame members Further including a pair of struck out portions confronting said opening and being located oppositely thereabout, said struck out portions in conjunction with the other frame member defining a pair of brush holder receiving spaces; said bearing receiving means comprising bearing receiving recesses defined by complementary aligned struck out portions in said frame members.

Claim 28

A tool employing the subframe of claim 17 and further including, a motor rotor received in said opening and having a commutator aligned with said brush holder receiving spaces, brush holders in said brush holder receiving spaces, brushes held by said brush holder and in electrical engagement with said commutator, bearings in said bearing receiving recesses, at least one of said bearings mounting said rotor for rotation within said subframe, transmission means mechanically connected to said rotor and mounted for rotation within said subframe by other bearings received in said recesses, and means defining a tool housing, said tool housing having T-shaped notches therein for receiving the flanges of said frame members.

Claim 29

A tool according to claim 18 and further including means securing said frame members together.

Claim 30

A tool according to claim 19 wherein said securing means comprise rivets extending between the frame members.

Claim 31

A tool according to claim 19 wherein said securing means comprise C-shaped clips located about adjacent ones of said flanges on said frame members.