Split end bell for motor housing

Claim 2

A motor comprising a rotor assembly including an elongated shaft and an armature assembly mounted on said shaft intermediate its ends, stator means disposed about said armature assembly, and housing means including an axially extending cylindrical shell enclosing said stator means, the ends of said shell lying in planes generally perpendicular to the axis of said shaft, end bell means for closing each end of said shell and journal mounting said shaft, each end bell means including a peripherally extending axially inner piece and a mating peripherally extending axially outer piece, means for fastening said pieces and said shell together, each inner piece engaging the adjacent end of said shell, and each outer piece engaging its mating inner piece along a plane generally perpendicular to the axis of said shaft, and a bearing for each end of said shaft, said mating outer and inner pieces capturing and supporting therebetween one of said bearings.

Claim 3

The motor of claim 1 in which each end bell means is constructed such that one of its said pieces provides a concentric seat for one axial end of its associated bearing and the other of its said pieces provides radially inwardly extending portions for engaging the opposite end of said bearing.

Claim 4

The motor of claim 1 in which each end bell means is constructed such that one of its said pieces provides a concentric rigid seat for one axial end of its associated bearing and the other of its said pieces provides radially inwardly extending yieldable portions for engaging the axially opposite end of said bearing and urging said bearing into said seat.

Claim 5

The motor of claim 3 in which each said bearing is concentrically beveled at its axial ends, said seat being formed conformingly to receive said one end of said bearing and said yieldable portions being tapered conformingly to engage the said opposite end.

Claim 6

The motor of claim 1 in which each end bell means is constructed such that its outer piece provides an axially inwardly facing rigid seat for one axial end of its associated bearing and its inner piece provides radially inwardly extending yieldable fingers for engaging the axially opposite end of said bearing and holding said bearing into said seat.

Claim 7

The motor of claim 1 in which one of said end bell means is constructed such that one of its pieces provides a pair of generally radially inwardly extending slots and the other of its pieces provides generally radially extending covers for said slots, said armature assembly including a commutator in registry with said slots, brushes disposed respectively in said slots for generally radial reciprocation therein, and spring means urging said brushes inwardly to contact said commutator.

Claim 8

The motor Of claim 5 in which one of said end bell means is constructed such that one of its pieces provides a pair of generally radially inwardly extending slots and the other of its pieces provides generally radially extending covers for said slots, said armature assembly including a commutator in registry with said slots, brushes disposed respectively in said slots for generally radial reciprocation therein and spring means urging said brushes inwardly to contact said commutator.

Claim 9

The motor of claim 1 in which said end bell means are plastic and one of said end bell means is constructed such that its inner piece provides a pair of generally radially inwardly extending slots having generally rectangular cross sections and its outer piece provides a generally radially extending cover for each of said slots, said armature assembly including a commutator in registry with said slots, brushes having generally rectangular cross sections disposed respectively in said slots for generally radial reciprocation therein, and spring means urging said brushes inwardly to contact said commutator.

Claim 10

A motor comprising a rotor assembly including an elongated shaft and an armature assembly mounted on said shaft intermediate its ends, stator means disposed about said armature assembly, and housing means including an axially extending cylindrical shell enclosing said stator means, the ends of said shell lying in planes generally perpendicular to the axis of said shaft, and end bell means for closing each end of said shell and journal mounting said shaft, each end bell means including a peripherally extending axially inner piece and a mating peripherally extending axially outer piece, each inner piece engaging the adjacent end of said shell, and each outer piece engaging its mating inner piece along a plane generally perpendicular to the axis of said shaft, said stator means including a pair of cylindrically formed rubberlike members impregnated with magnetic material and extending about a portion of said armature assembly, said inner pieces being formed to provide axially inwardly extending portions for engaging and positioning said members in said shell.

Claim 11

A motor comprising a rotor assembly including an elongated shaft and an armature assembly mounted on said shaft intermediate its ends, stator means disposed about said armature assembly, and housing means including an axially extending cylindrical shell enclosing said stator means, the ends of said shell lying in planes generally perpendicular to the axis of said shaft, and end bell means for closing each end of said shell and journal mounting said shaft, each end bell means including a peripherally extending axially inner piece and a mating peripherally extending axially outer piece, each inner piece engaging the adjacent end of said shell, and each outer piece engaging its mating inner piece along a plane generally perpendicular to the axis of said shaft, said stator means including a pair of cylindrically formed rubberlike members impregnated with magnetic material and extending about a portion of said armature assembly, said inner pieces being formed to provide axially inwardly extending portions for engaging and positioning said members in said shell.

Claim 12

The motor of claim 9 in which the axially extending edges of said members define two radially oppositely disposed, axially extending spaces adjacent the internal wall of said shell, said inwardly extending portions of each inner piece including two radially oppositely disposed pairs of fingers extending respectively into the adjacent ends of said spaces, each pair of said fingers being peripherally spaced apart to engage respectively the opposing axially extending edges of said members.

Claim 13

The motor of claim 9 in which one of said end bell means is constructed such that one of its pieces provides a pair of generally radially inwardly extending slots and the other of its pieces provides generally radially extending covers for said slots, said armature assembly including a commutator in registry with said slots, brushes disposed respectively in said slots for generally radial reciprocation therein, and spring means urging said brushes inwardly to contact said commutator.

Claim 14

The motor of claim 11 in which each said bell means is constructed such that one of its said pieces provides a concentric rigid seat for one axial end of its associated bearing and the other of its said pieces provides radially inwardly extending yieldable portions for engaging the axially opposite end of said bearing and urging said bearing into said seat.

Claim 15

A motor comprising a rotor assembly including an elongated shaft and an armature assembly mounted on said shaft intermediate its ends, stator means disposed about said armature assembly, and housing means including an axially extending cylindrical shell enclosing said stator means, the ends of said shell lying in planes generally perpendicular to the axis of said shaft, end bell means for closing each end of said shell and journal mounting said shaft, at least one of said end bell means incluDing a peripherally extending axially inner piece and a mating peripherally extending axially outer piece, means for fastening said pieces and said shell together, said inner piece engaging the adjacent end of said shell, and said outer piece engaging its mating inner piece along a plane generally perpendicular to the axis of said shaft, and bearings for said shaft, said mating outer and inner pieces captured and supporting therebetween one of said bearings.

Claim 16

A motor comprising a rotor assembly including an elongated shaft and an armature assembly mounted on said shaft intermediate its ends, stator means disposed about said armature assembly, and housing means including an axially extending cylindrical shell enclosing said stator means, the ends of said shell lying in planes generally perpendicular to the axis of said shaft, end bell means for closing each end of said shell and journal mounting said shaft, at least one of said end bell means incluDing a peripherally extending axially inner piece and a mating peripherally extending axially outer piece, means for fastening said pieces and said shell together, said inner piece engaging the adjacent end of said shell, and said outer piece engaging its mating inner piece along a plane generally perpendicular to the axis of said shaft, and bearings for said shaft, said mating outer and inner pieces captured and supporting therebetween one of said bearings.

Claim 17

The motor of claim 13 in which said end bell means is constructed such that one of its said pieces provides a concentric seat for one axial end of its associated bearing and the other of its said pieces provides radially inwardly extending portions for engaging the opposite end of said bearing.

Claim 18

A motor comprising a rotor assembly including an elongated shaft and an armature assembly mounted on said shaft intermediate its ends, stator means disposed about said armature assembly, and housing means including an axially extending cylindrical shell enclosing said stator means, the ends of said shell lying in planes generally perpendicular to the axis of said shaft, and end bell means for closing each end of said shell and journal mounting said shaft, at least one of said end bell means including a peripherally extending axially inner piece and a mating peripherally extending axially outer piece, said inner piece engaging the adjacent end of said shell, and said outer piece engaging its mating inner piece along a plane generally perpendicular to the axis of said shaft, said end bell means being constructed such that one of its pieces provides a pair of generally radially inwardly extending slots and the other of its pieces provides generally radially extending covers for said slots, said armature assembly including a commutator in registry with said slots, brushes disposed respectively in said slots for generally radial reciprocation therein, and spring means urging said brushes inwardly to contact said commutator.

Claim 19

A motor comprising a rotor assembly including an elongated shaft and an armature assembly mounted on said shaft intermediate its ends, stator means disposed about said armature assembly, and housing means including an axially extending cylindrical shell enclosing said stator means, the ends of said shell lying in planes generally perpendicular to the axis of said shaft, and end bell means for closing each end of said shell and journal mounting said shaft, at least one of said end bell means including a peripherally extending axially inner piece and a mating peripherally extending axially outer piece, said inner piece engaging the adjacent end of said shell, and said outer piece engaging its mating inner piece along a plane generally perpendicular to the axis of said shaft, said end bell means being constructed such that one of its pieces provides a pair of generally radially inwardly extending slots and the other of its pieces provides generally radially extending covers for said slots, said armature assembly including a commutator in registry with said slots, brushes disposed respectively in said slots for generally radial reciprocation therein, and spring means urging said brushes inwardly to contact said commutator.

Claim 20

The motor of claim 13 in which said end bell means is plastic and formed such that its inner piece provides a pair of generally radially inwardly extending slots having generally rectangular cross sections and its outer piece provides a generally radially extending cover for each of said slots, said armature assembly including a commutator in registry with said slots, brushes having generally rectangular cross sections disposed respectively in said slots for generally radial reciprocation therein, and spring means urging said brushes inwardly to contact said commutator.

Claim 21

The motor of claim 13 in which said stator means includes a pair of cylindrically formed members extending about a portion of said armature assembly, said inner piece being formed to provide axially inwardly extending portions for engaging and positioning said members in said shell.