1. An end play adjustment system for reducing axial end play in an electric motor having a housing having at least one projection or channel, said end play adjustment system comprising:
a slider body comprising a thrust wall for driving into an end of an armature of said electric motor; and
a plunger having a first angled surface for engaging said slider body in order to drive said slider body until said thrust wall engages said end of said armature, said plunger comprising at least one plunger channel or projection for cooperating with said at least one projection or channel, respectfully, to facilitate preventing the plunger from moving in a direction coaxial with an axis of said armature;
said thrust wall lying in a plane that is substantially perpendicular to said axis of said armature.
2. The end play adjustment system as recited in claim 1 wherein said slider body comprises a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said housing.
3. The end play adjustment system as recited in claim 1 wherein said housing comprising a plunger-receiving area defined by a plurality of housing walls, said slider body comprising a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said plunger-receiving area.
4. The end play adjustment system as recited in claim 3 wherein said first angled surface is situated between a first plunger wall and a second plunger wall, said plurality of housing walls defining at least a first housing wall and a second housing wall, said first and second housing walls being situated in opposed relation to said first plunger wall and said second plunger wall when said plunger is situated therebetween.
5. The end play adjustment system as recited in claim 1 wherein said slider body is generally U-shaped and comprises a first leg portion, a second leg portion and said thrust wall for joining said first and second leg portions.
6. The endplay adjustment system as recited in claim 1 wherein said plunger is secured to said housing.
7. The endplay adjustment system as recited in claim 6 wherein said plunger is ultrasonically welded to said housing to weld it thereto.
8. The endplay adjustment system as recited in claim 1 wherein said plunger is ultrasonically welded to said housing and said plunger.
9. The endplay adjustment system as recited in claim 1 wherein system further comprises:
a coupler for coupling said plunger to said slider body in a pre-deployment position.
10. The end play adjustment system as recited in claim 9 wherein said coupler comprises a plurality of attachment fingers integrally molded to and coupling said plunger and said slider body.
11. The endplay adjustment system as recited in claim 10 wherein said plunger and said slider body are fiber glass reinforced thermoplastic polyester or thermoplastic.
12. The endplay adjustment system as recited in claim 1 wherein said plunger and said slider body are fiber glass reinforced thermoplastic polyester or s thermoplastic.
13. An end play adjustment system for reducing axial end play in an electric motor having a housing, said end play adjustment system comprising:
a slider body comprising a thrust wall for driving into an end of an armature of said electric motor; and
plunger having a first angled surface for engaging said slider body in order to drive said slider body until said thrust wall engages said end of said armature;
said thrust wall lying in a plane that is substantially perpendicular to an axis of said armature;
wherein said housing comprises a plunger-receiving area defined by a plurality of housing walls, said slider body comprising a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said plunger-receiving area;
when said first angled surface is situated between a first plunger wall and a second plunger wall, said plurality of housing walls defining at least a first housing wall and a second housing wall, said first and second housing walls being situated in opposed relation to said first plunger wall and said second plunger wall when said plunger is situated therebetween; and
wherein each of said first plunger wall and said second plunger comprising an alignment channel, said first housing wall and said second housing wall each comprising a projection received in said alignment channels to facilitate preventing said plunger from moving in a direction coaxial with said axis of said armature.
14. The endplay adjustment system as recited in claim 13 wherein system further comprises:
a coupler for coupling said plunger to said slider body in a pre-deployment position.
15. The end play adjustment system as recited in claim 14 wherein said coupler comprises a plurality of attachment fingers integrally molded to and coupling said plunger and said slider body.
16. An end play adjustment system for reducing axial end play in an electric motor having a housing, said end play adjustment system comprising:
a slider body comprising a thrust wall for driving into an end of an armature of said electric motor;
a plunger having a first angled surface for engaging said slider body in order to drive said slider body until said thrust wall engages said end of said armature;
said thrust wall lying in a plane that is substantially perpendicular to an axis of said armature;
wherein said housing comprising a plunger-receiving area defined by a plurality of housing walls, said slider body comprising a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said plunger-receiving area;
wherein said slider body is generally U-shaped and comprises a first leg portion, a second leg portion and a thrust wall for joining said first and second leg portions, said housing defining a first channel and a second channel for receiving said first and second leg portions, respectively, in order to permit said U-shaped member to move towards said armature when said plunger is situated in said plunger-receiving area; and
wherein each of said first plunger wall and said second plunger wall comprise an alignment channel, said first housing wall and said second housing wall each comprising a projection for receipt in said alignment channels, respectively, for aligning said plunger in said plunger-receiving area.
17. The endplay adjustment system as recited in claim 16 wherein said plunger is secured to said housing.
18. The endplay adjustment system as recited in claim 17 wherein said plunger is ultrasonically welded to both said housing and said slider body.
19. An electric motor assembly comprising:
a housing for receiving an electric motor having an armature, said housing having at least one projection or channel;
a gear driven by said armature and rotatably driving a drive shaft;
an endplay adjustment system for reducing axial end play in the electric motor assembly, said end play adjustment system comprising:
a slider body comprising a thrust wall for driving into an end of an armature of said electric motor; and
a plunger having a first angled surface for engaging said slider body in order to drive said slider body until said thrust wall engages said end of said armature, said plunger comprising at least one plunger channel or projection for cooperating with said at least one projection or channel, respectively, to facilitate preventing the plunger from moving in a direction coaxial with said axis and said armature;
said thrust wall lying in a plane that is substantially perpendicular to an axis of said armature.
20. The electric motor assembly as recited in claim 19 wherein said slider body comprises a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said housing.
21. The electric motor assembly as recited in claim 19 wherein housing comprising a plunger-receiving area defined by a plurality of housing walls, said slider body comprising a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said plunger-receiving area.
22. The electric motor assembly as recited in claim 21 wherein said first angled surface is situated between a first plunger wall and a second plunger wall, said plurality of housing walls defining at least a first housing wall and a second housing wall, said first and second housing walls being situated in opposed relation to said first plunger wall and said second plunger wall when said plunger is situated therebetween.
23. The electric motor assembly as recited in claim 21 wherein said slider body is generally U-shaped and comprises a first leg portion, a second leg portion and a thrust wall for joining said first and second leg portions, said housing defining a first channel and a second channel for receiving said first and second leg portions, respectively, in order to permit said U-shaped member to move towards said armature when said plunger is situated in said plunger-receiving area.
24. The electric motor assembly as recited in claim 19 wherein said slider body is generally U-shaped and comprises a first leg portion, a second leg portion and said thrust wall for joining said first and second leg portions.
25. The electric motor assembly as recited in claim 19 wherein said plunger is secured to said housing.
26. The electric motor assembly as recited in claim 25 wherein said plunger is ultrasonically welded to said housing to weld it thereto.
27. The electric motor assembly as recited in claim 19 wherein said plunger is ultrasonically welded to both said housing and said slider body.
28. The electric motor assembly as recited in claim 19 wherein said plunger is ultrasonically welded to said housing and said plunger.
29. The endplay adjustment system as recited in claim 19 wherein system further comprises:
a coupler for coupling said plunger to said slider body in a pre-deployment position.
30. The end play adjustment system as recited in claim 29 wherein said coupler comprises a plurality of attachment fingers integrally molded to and coupling said plunger and said slider body.
31. The endplay adjustment system as recited in claim 19 wherein said plunger and said slider body are fiber glass reinforced thermoplastic polyester or thermoplastic.
32. An electric motor assembly comprising:
a housing for receiving an electric motor having an armature;
a gear driven by said armature and rotatably driving a drive shaft;
an endplay adjustment system for reducing axial end play in the electric motor assembly, said end play adjustment system comprising:
a slider body comprising a thrust wall for driving into an end of an armature of said electric motor; and
a plunger having a first angled surface for engaging said slider body in order to drive said slider body until said thrust wall engages said end of said armature;
said thrust wall lying in a plane that is substantially perpendicular to an axis of said armature;
wherein said housing comprising a plunger-receiving area defined by a plurality of housing walls, said slider body comprising a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said plunger-receiving area;
wherein said first angled surface is situated between a first plunger wall and a second plunger wall, said plurality of housing walls defining at least a first housing wall and a second housing wall, said first and second housing walls being situated in opposed relation to said first plunger wall and said second plunger wall when said plunger is situated therebetween; and
wherein each of said first plunger wall and said second plunger wall comprising an alignment channel, said first housing wall and said second housing wall each comprising a projection received in said alignment channels to facilitate preventing said plunger from moving in a direction coaxial with said axis of said armature.
33. The endplay adjustment system as recited in claim 32 wherein said plunger and said slider body are fiber glass reinforced thermoplastic polyester or thermoplastic.
34. An electric motor assembly comprising:
a housing for receiving an electric motor having an armature;
a gear driven by said armature and rotatably driving a drive shaft;
an endplay adjustment system for reducing axial end play in the electric motor assembly, said end play adjustment system comprising:
a slider body comprising a thrust wall for driving into an end of an armature of said electric motor; and
a plunger having a first angled surface for engaging said slider body in order to drive said slider body until said thrust wall engages said end of said armature;
said thrust wall lying in a plane that is substantially perpendicular to an axis of said armature;
wherein said housing comprises a plunger-receiving area defined by a plurality of housing walls, said slider body comprising a second angled surface situated on a side opposite said thrust wall, said first angled surface of said plunger engaging said second angled surface of said slider body when said plunger is received in said plunger-receiving area;
wherein said slider body is generally U-shaped and comprises a first leg portion, a second leg portion and a thrust wall for joining said first and second leg portions, said housing defining a first channel and a second channel for receiving said first and second leg portions, respectively, in order to permit said U-shaped member to move towards said armature when said plunger is situated in said plunger-receiving area; and
wherein each of said first plunger wall and said second plunger wall comprise an alignment channel, said first housing wall and said second housing wall each comprising a projection for receipt in said alignment channels, respectively, for aligning said plunger in said plunger-receiving area.
35. The electric motor assembly as recited in claim 34 wherein said plunger is secured to said housing.
36. The endplay adjustment system as recited in claim 34 wherein system further comprises:
a coupler for coupling said plunger to said slider body in a pre-deployment position.
37. The end play adjustment system as recited in claim 36 wherein said coupler comprises a plurality of attachment fingers integrally molded to and coupling said plunger and said slider body.
38. A method for reducing endplay in an electric motor assembly comprising a housing, having at least one projection or channel, said method comprising the steps of:
situating a slider in operative relationship with an armature, said slider comprising a thrust wall for engaging an end of the armature;
situating a plunger in operative relationship to said slider, said plunger comprising at least one plunger channel or projection for cooperating with said at least one projection or channel, respectively, to facilitate preventing the plunger from moving in a direction coaxial with said axis and said armature; and
driving said plunger into engagement with said slider until said thrust wall engages said end of said armature.
39. The method as recited in claim 38 wherein said method further comprising the step of:
situating a generally U-shaped slider in said housing.
40. The method as recited in claim 38 wherein said housing comprises a first channel situated in opposed relation to a second channel, said method further comprising the step of:
providing a U-shaped slider comprising a first leg portion and a second leg portion joined by said thrust wall;
situating said first and second leg portions in said first and second channels, respectively.
41. The method as recited in claim 38 wherein said method further comprising the step of:
ultrasonically welding said plunger to said housing.
42. The method as recited in claim 38 wherein said method further comprising the step of:
ultrasonically welding said plunger to said housing and said slider.
43. The method as recited in claim 38 wherein said method further comprises the step of:
providing an integrally molded plunger and slider body wherein said plunger is situated in a pre-deployed position relative to said slider body.
44. The method as recited in claim 38 wherein said plunger is integrally attached to said slider body with a plurality of attachment fingers so that said plunger is situated in a pre-deployed position relative to said slider body, said method further comprising the step of:
forcing said plunger toward an open area defined by said slider body until said plurality of attachment fingers break, thereby enabling said plunger to be position in said housing.
45. A method for reducing endplay in an electric motor assembly comprising a housing, said method comprising the steps of:
situating a slider in operative relationship with an armature, said slider comprising a thrust wall for engaging an end of the armature;
situating a plunger in operative relationship to said slider; and
driving said plunger into engagement with said slider until said thrust wall engages said end of said armature;
wherein said housing comprises a plurality of wails defining a first channel situated and a second plurality of walls defining a second channel, said method further comprising the step of:
providing a U-shaped slider comprising a first leg portion and a second leg portion joined by said thrust wall;
situating said first leg portion in said first channel and said second leg portion in said second channel;
providing a plunger comprising alignment channels that cooperate with projections on said housing to facilitate preventing said plunger from moving in a direction coaxial with an axis of said armature.
46. The method as recited in claim 45 wherein said method further comprising the step of:
securing said plunger to said housing and said slider.
47. The method as recited in claim 46 wherein said method further comprising the step of:
ultrasonically welding said plunger to said housing and said slider.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A semiconductor device comprising:
a decoder that activates one first test signal in a plurality of first test signals in response to an external test code signal, the one first test signal being indicated by the external test code signal;
a first register unit electrically coupled to the decoder, the first register unit receiving in parallel the plurality of first test signals from the decoder, the first register unit outputting in series the plurality of first test signals as a plurality of second test signals;
a second register unit electrically coupled to the first register unit, the second register unit receiving in series the plurality of second test signals from the first register unit, the second register unit outputting in parallel the plurality of second test signals as a plurality of third test signals; and
a control unit electrically coupled to the second register unit, the control unit receiving in parallel the plurality of third test signals from the second register unit, the control unit controlling operation of a memory cell array in response to the plurality of third test signals.
2. The semiconductor device according to claim 1, wherein the first register unit comprises a plurality of first registers connected to each other, each of the plurality of first registers is electrically coupled to the decoder, each of the plurality of first registers receives a corresponding first test signal of the plurality of first test signals, each of the plurality of first registers except for the first register on a final stage of the first register unit transfers the corresponding first test signal as a corresponding second test signal to the first register on a next stage, the first register on the final stage of the first register unit outputs in series the plurality of second test signals.
3. The semiconductor device according to claim 2, wherein the second register unit comprises a plurality of second registers connected to each other, the second register on a first stage is electrically coupled to an output of the first register on the final stage of the first register unit, each of the plurality of second registers except for the second register on a final stage of the second register unit transfers sequentially the corresponding second test signal as a corresponding third test signal to the second register on a next stage.
4. The semiconductor device according to claim 3, wherein the number of the plurality of first registers is the same as the number of the plurality of second registers.
5. The semiconductor device according to claim 3, further comprising:
a data output terminal coupled to the second register on the final stage of the second register unit,
wherein the second register on the final stage sequentially transfers the third test signals to the data output terminal.
6. The semiconductor device according to claim 2, wherein the first register on a first stage of the first register unit receives a fixed potential.
7. The semiconductor device according to claim 2, wherein the first register on a first stage of the first register unit receives a first stage input signal having a fixed pattern.
8. The semiconductor device according to claim 2, wherein the second register on the final stage of the second register unit is electrically coupled to the first register on a first stage of the first register unit.
9. The semiconductor device according to claim 2, wherein the control unit comprises a plurality of control circuits, each of the plurality of control circuits is electrically coupled to a corresponding one of the plurality of the second registers, and each of the plurality of control circuits receives a corresponding one of the plurality of third test signals from the corresponding one of the plurality of the second registers.
10. The semiconductor device according to claim 9, wherein the plurality of control circuits are disposed in a peripheral circuit area that is adjacent to the memory cell array, the plurality of second registers are disposed, which have correspondences with the plurality of control circuits.
11. The semiconductor device according to claim 1, wherein the decoder generates first and second register control signals in response to the test code signal,
the decoder supplies the first register control signal to the first register control unit, and
the decoder supplies the first and second register control signals to the second register control unit.
12. The semiconductor device according to claim 11, wherein the first register unit outputs in series the plurality of first test signals as the plurality of second test signals in response to the first register control signal, and
the second register unit receives in series the plurality of second test signals from the first register unit in response to the first register control signal, the second register unit outputs in parallel the plurality of second test signals as the plurality of third test signals in response to the second register control signal.
13. A semiconductor device comprising:
a decoder that generates first and second register control signals in response to an external test code signal;
a first register unit coupled to the decoder, the first register unit receiving the first register control signal from the decoder, the first register unit outputting in series a plurality of test signals in response to the first register control signal; and
a second register unit coupled to the first register unit, the second register unit receiving the first and second register control signals from the decoder, the second register unit receiving in series the plurality of test signals from the first register unit in response to the first register control signal, the second register unit outputting in parallel the plurality of test signals in response to the second register control signal.
14. The semiconductor device according to claim 13, further comprising:
a control unit coupled to the second register unit, the control unit receiving in parallel the plurality of test signals from the second register unit.
15. The semiconductor device according to claim 14, further comprising:
a memory cell array coupled to the control unit, the control unit controlling operations of the memory cell array in response to the plurality of test signals.
16. The semiconductor device according to claim 15, wherein the second register unit is disposed closer to the memory cell array than the first register unit.
17. The semiconductor device according to claim 14, wherein
the first register unit comprises:
a plurality of first registers connected in series to each other, the plurality of first registers being connected in parallel to the decoder, a first register of the plurality of first registers receiving the test signal activated by the decoder, and the plurality of first registers allowing the test signal to be sequentially transferred through the series connection of the plurality of first registers,
the second register unit comprises:
a plurality of second registers connected in series to each other, the plurality of second registers being connected in series to the plurality of first registers, the plurality of second registers allowing the first test signal to be sequentially transferred through the series connection of the plurality of second registers, and
the control unit comprises:
a plurality of control circuits connected in parallel to the plurality of second registers.
18. The semiconductor device according to claim 13, further comprising:
a data output terminal coupled to the second register on the final stage of the second register unit,
wherein the second register on the final stage sequentially transfers the third test signals to the data output terminal.
19. A semiconductor device comprising:
a decoder that activates a test signal of a plurality of test signals;
a plurality of first registers connected in series to each other, the plurality of first registers being connected in parallel to the decoder, a first register of the plurality of first registers receiving the test signal activated by the decoder, and the plurality of first registers allowing the test signal to be sequentially transferred through the series connection of the plurality of first registers;
a plurality of second registers connected in series to each other, the plurality of second registers being connected in series to the plurality of first registers, the plurality of second registers allowing the first test signal to be sequentially transferred through the series connection of the plurality of second registers; and
a plurality of control circuits connected in parallel to the plurality of second registers, the plurality of control circuits receiving in parallel the plurality of test signals from the plurality of second registers.
20. The semiconductor device according to claim 19, further comprising:
a memory cell array coupled to the control unit, the control unit controlling operations of the memory cell array in response to the plurality of test signals.