1. A part-holding assembly for use with a vise having a pair of jaws movable relative to one another, the part-holding assembly comprising:
a first elongated block that may be removably positioned adjacent to one of the jaws of the vise, the first block having first and second spaced-apart cavities formed therein;
a second elongated block that may be removably positioned adjacent to the other jaw of the vise, the second block having a first generally horizontally-extending through-hole aligned with the first cavity of the first block and a second generally horizontally-extending through-hole aligned with the second cavity of the first block;
a third elongated block positioned between the first block and the second block and having a first generally horizontally-extending through-hole aligned with the first cavity of the first block and a second generally horizontally-extending through-hole aligned with the second cavity of the first block;
a first elongated guide rod having one end attached within the first cavity of the first block and an opposite end extending through the first through-holes of the second and third blocks;
a second elongated guide rod having one end attached within the second cavity of the second block and an opposite end extending through the second through-holes of the second and third blocks; and
linear bearings positioned within the first and second through-holes of the second and third blocks to permit the second and third blocks to slide along the first and second guide rods toward and away from the first block so that the first, second, and third blocks may be moved away from one another and subsequently moved toward one another to hold parts therebetween when the jaws of the vise are moved toward one another.
2. The part-holding assembly of claim 1, wherein the first block includes structure for removably attaching the part-holding assembly to a stationary jaw of the vise.
3. The part-holding assembly of claim 1, wherein the second block includes structure for removably attaching the part-holding assembly to a movable jaw of the vise.
4. The part-holding assembly of claim 1, further comprising seals positioned adjacent the first and second through-holes of the second and third blocks for preventing debris from migrating between the guide rods and the linear bearings.
5. The part-holding assembly of claim 1, wherein the linear bearings are sleeve-style bearings formed of low friction materials.
6. The part-holding assembly of claim 1, wherein the linear bearings are linear ball bearings.
7. The part-holding assembly of claim 1, wherein the first and second guide rods are removably attached within the first and second cavities of the first block with set screws.
8. The part-holding assembly of claim 1, wherein the first and second guide rods have threaded ends, the first and second cavities have threaded inner walls, and the first and second guide rods are screwed into the first and second cavities.
9. A part-holding assembly for use with a vise having a pair of jaws movable relative to one another, the part-holding assembly comprising:
a first elongated block having structure for removably attaching to a stationary jaw of the vise, the first block also having first and second spaced-apart cavities formed therein;
a second elongated block having structure for removably attaching to a moveable jaw of the vise, the second block also having a first generally horizontally-extending through-hole aligned with the first cavity of the first block and a second generally horizontally-extending through-hole aligned with the second cavity of the first block;
a third elongated block positioned between the first block and the second block and having a first generally horizontally-extending through-hole aligned with the first cavity of the first block and a second generally horizontally-extending through-hole aligned with the second cavity of the first block;
a first elongated guide rod having one end attached within the first cavity of the first block and opposite end extending through the first through-holes of the second and third blocks; and
a second elongated guide rod having one end attached within the second cavity of the second block and an opposite end extending through the second through-holes of the second and third blocks.
10. The part-holding assembly of claim 9, further comprising linear bearings positioned within the first and second through-holes of the second and third blocks to permit the second and third blocks to slide along the first and second guide rods toward and away from the first block so that the first, second, and third blocks may be moved away from one another and subsequently moved toward one another to hold parts therebetween when the jaws of the vise are moved toward one another.
11. The part-holding assembly of claim 9, wherein the structure for removably attaching to the stationary jaw of the vise comprises a U-shaped slot for receiving a fastener fastened to the stationary jaw.
12. The part-holding assembly of claim 9, wherein the structure for removably attaching to the movable jaw of the vise comprises a U-shaped slot for receiving a fastener fastened to the moveable jaw.
13. The part-holding assembly of claim 9, further comprising seals positioned adjacent the first and second through-holes of the second and third blocks for preventing debris from migrating between the guide rods and the linear bearings.
14. The part-holding assembly of claim 9, wherein the linear bearings are sleeve-style bearings formed of low friction materials.
15. The part-holding assembly of claim 9, wherein the linear bearings are linear ball bearings.
16. The part-holding assembly of claim 9, wherein the first and second guide rods are removably attached within the first and second cavities of the first block with set screws.
17. The part-holding assembly of claim 9, wherein the first and second guide rods have threaded ends and the first and second cavities have internal threading so that the first and second guide rods are screwed into the first and second cavities.
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 power reception device that receives electric power in a non-contact manner from a power transmission unit including a first coil, comprising:
a case having an accommodation portion formed therein;
a core disposed in said case;
a second coil disposed in said case and provided on said core;
an electrical device disposed in said case and connected to said second coil;
an insulation member disposed between an inner surface of said case and said second coil, and between the inner surface of said case and said electrical device; and
a cooling device that causes a flow of a coolant to cool said second coil and said electrical device,
said second coil and said electrical device being attached to the inner surface of said case with said insulation member interposed therebetween,
said electrical device being disposed upstream in a flow direction of said coolant from said second coil.
2. The power reception device according to claim 1, wherein
said electrical device includes a capacitor connected to said second coil, and a rectifier that rectifies a current received by said second coil,
said rectifier is disposed upstream in the flow direction of said coolant from said capacitor, and
said capacitor is disposed upstream in the flow direction of said coolant from said second coil.
3. The power reception device according to claim 1, wherein
said electrical device includes a capacitor connected to said second coil and a rectifier that rectifies a current received by said second coil,
said capacitor is disposed upstream in the flow direction of said coolant from said rectifier, and
said rectifier is disposed upstream in the flow direction of said coolant from said second coil.
4. The power reception device according to claim 1, wherein
said second coil is formed to surround a first winding axis,
said core includes a first stem portion having said second coil wound therearound, a first magnetic pole portion formed at a first end portion of said first stem portion and extending in a first intersecting direction that intersects a direction in which said first winding axis extends, and a second magnetic pole portion formed at a second end portion of said first stem portion and extending in said first intersecting direction,
a width of said first stem portion in said first intersecting direction is smaller than a length of said first magnetic pole portion and a length of said second magnetic pole portion in said first intersecting direction,
a first central portion positioned at a center of said first magnetic pole portion in said first intersecting direction and a second central portion positioned at a center of said second magnetic pole portion in said first intersecting direction are displaced in said first intersecting direction from a third central portion positioned at a center of said first stem portion in said first intersecting direction, and
said electrical device is disposed so as to be displaced from said first stem portion in said first intersecting direction, and is disposed between said first magnetic pole portion and said second magnetic pole portion.
5. The power reception device according to claim 1, wherein
said cooling device supplies the coolant into said case.
6. The power reception device according to claim 5, wherein
said second coil is formed to surround a first winding axis, and
said cooling device supplies said coolant in a first intersecting direction that intersects a direction in which said first winding axis extends.
7. The power reception device according to claim 1, wherein
said case is sealed.
8. The power reception device according to claim 1, wherein
said second coil and a capacitor connected to said second coil form a power reception unit that receives electric power in a non-contact manner from said power transmission unit; and
a difference between a natural frequency of said power transmission unit and a natural frequency of said power reception unit is 10% or less of the natural frequency of said power reception unit.
9. The power reception device according to claim 1, wherein
said second coil and a capacitor connected to said second coil orm a power reception unit that receives electric power in a non-contact manner from said power transmission unit, and
a coupling coefficient between said power reception unit and said power transmission unit is 0.1 or less.
10. The power reception device according to claim 1, wherein
said second coil and a capacitor connected to said second coil form a power reception unit that receives electric power in a non-contact manner from said power transmission unit, and
said power reception unit receives electric power from said power transmission unit through at least one of a magnetic field and an electric field, said magnetic field being formed between said power reception unit and said power transmission unit and oscillating at a specific frequency, said electric field being formed between said power reception unit and said power transmission unit and oscillating at the specific frequency.
11. A power transmission device that transmits electric power in a non-contact manner to a power reception unit including a second coil, comprising:
a case having an accommodation portion formed externally;
a core disposed in said case;
a first coil disposed in said case and provided on said core;
a second electrical device disposed in said case and connected to said first coil;
an insulation member disposed between an inner surface of said case and said first coil, and between the inner surface of said case and said second electrical device; and
a cooling device that causes a flow of a coolant to cool said first coil and said second electrical device,
said first coil and said second electrical device being attached to the inner surface of said case with said insulation member interposed therebetween,
said second electrical device being disposed upstream in a flow direction of said coolant from said first coil.
12. The power transmission device according to claim 11, wherein
said second electrical device includes a capacitor connected to said first coil.
13. The power transmission device according to claim 11, wherein
said first coil is formed to surround a second winding axis,
said core includes a second stem portion having said first coil wound therearound, a third magnetic pole portion formed at a third end portion of said second stem portion and extending in a second intersecting direction that intersects a direction in which said second winding axis extends, and a fourth magnetic pole portion formed at a fourth end portion of said second stem portion and extending in said second intersecting direction,
a width of said second stem portion in said second intersecting direction is smaller than a length of said third magnetic pole portion and a length of said fourth magnetic pole portion in said second intersecting direction,
a fourth central portion positioned at a center of said third magnetic pole portion in said second intersecting direction and a fifth central portion positioned at a center of said fourth magnetic pole portion in said second intersecting direction are displaced in said second intersecting direction from a sixth central portion positioned at a center of said second stem portion in said second intersecting direction, and
said second electrical device is disposed so as to be displaced from said second stem portion in said second intersecting direction, and is disposed between said third magnetic pole portion and said fourth magnetic pole portion.
14. The power transmission device according to claim 11, wherein
said cooling device supplies the coolant into said case.
15. The power transmission device according to claim 14, wherein
said first coil is formed to surround a second winding axis, and
said cooling device supplies said coolant in a second intersecting direction that intersects a direction in which said second winding axis extends.
16. The power transmission device according to claim 11, wherein
said case is sealed.
17. The power transmission device according to claim 11, wherein
said first coil and a capacitor connected to said first coil form a power transmission unit that transmits electric power in a non-contact manner to said power reception unit, and
a difference between a natural frequency of said power transmission unit and a natural frequency of said power reception unit is 10% or less of the natural frequency of said power reception unit.
18. The power transmission device according to claim 11, wherein
said first coil and a capacitor connected to said first coil form a power transmission unit that transmits electric power in a non-contact manner to said power reception unit, and
a coupling coefficient between said power reception unit and said power transmission unit is 0.1 or less.
19. The power transmission device according to claim 11, wherein
said first coil and a capacitor connected to said first coil form a power transmission unit that transmits electric power in a non-contact manner to said power reception unit, and
said power transmission unit transmits electric power to said power reception unit through at least one of a magnetic field and an electric field, said magnetic field being formed between said power reception unit and said power transmission unit and oscillating at a specific frequency, said electric field being formed between said power reception unit and said power transmission unit and oscillating at the specific frequency.