초록 ▼

A synchronizing device includes a pair of longitudinal guiding units each having a rack member and a movement damper connected to the rack member, and a rotating mechanism including a pair of pinion gears to be meshed respectively with the guiding units. When the pinion gears move respectively from

A synchronizing device includes a pair of longitudinal guiding units each having a rack member and a movement damper connected to the rack member, and a rotating mechanism including a pair of pinion gears to be meshed respectively with the guiding units. When the pinion gears move respectively from the rack members for rotation respectively on the movement dampers, an increased pressure is produced between the guiding units and the rotating mechanism, thereby slowing down and damping the rotation of the rotating mechanism.

대표청구항 ▼

1. A guiding unit of a synchronizing device to guide a rotating mechanism to rotate thereon, the rotating mechanism having a pinion shaft disposed through a journal hole defined in part by a stop plate, the guiding unit comprising a longitudinal rack member formed with a plurality of rack teeth, and

1. A guiding unit of a synchronizing device to guide a rotating mechanism to rotate thereon, the rotating mechanism having a pinion shaft disposed through a journal hole defined in part by a stop plate, the guiding unit comprising a longitudinal rack member formed with a plurality of rack teeth, and at least one movement damper disposed at one end of said rack member for applying pressure to the pinion shaft of the rotating mechanism, wherein said pressure gradually moves the pinion shaft toward and against the stop plate. 2. The guiding unit as claimed in claim 1, wherein said rack teeth have substantially equal height, said rack member further having a plurality of rack grooves formed between said rack teeth, said movement damper having a toothed portion integrally connected to and aligned longitudinally with said rack member, said toothed portion having at least one press tooth higher than said rack teeth. 3. The guiding unit as claimed in claim 1, wherein said rack teeth have substantially equal height, said rack member further having a plurality of rack grooves formed among said rack teeth, said movement damper having a toothed portion integrally connected to and aligned longitudinally with said rack member, said toothed portion having a plurality of press teeth, and press grooves among said press teeth, said press grooves having a depth that is smaller than that of said rack grooves. 4. The guiding unit as claimed in claim 1, wherein said rack member further has a pair of longitudinal and parallel retaining walls, said rack teeth being longitudinally disposed between said retaining walls, said movement damper having a toothed portion integrally connected to and aligned longitudinally with said rack member, said toothed portion having a pair of supporting walls respectively and integrally connected to said retaining walls, each of said supporting walls having a height greater than that of each of said retaining walls. 5. The guiding unit as claimed in claim 1, wherein said rack teeth have substantially equal height, said rack member further having a longitudinal sliding groove that intersects said rack teeth and that is indented downwardly from tip ends of said rack teeth, said movement damper having a toothed portion integrally connected to and aligned longitudinally with said rack member, said toothed portion having a plurality of press teeth, and an inclined groove that intersects said press teeth, that is indented downwardly from tip ends of said press teeth and that is connected longitudinally and continuously to said sliding groove, said inclined groove having a depth that is smaller than that of said sliding groove and that decreases gradually from said sliding groove in a direction away from said sliding groove. 6. The guiding unit as claimed in claim 1, wherein said rack teeth have substantially equal height, said rack member further having a longitudinal base wall formed with said rack teeth, a sliding wall that is connected transversely to said base wall and that extends substantially vertically at one side of said rack teeth, and a longitudinal sliding hole formed in said sliding wall, said movement damper having a toothed portion integrally connected to and aligned longitudinally with said rack member, said toothed portion having a plurality of press teeth connected integrally to and aligned longitudinally with said rack teeth, a guiding wall that is connected longitudinally to and that extends continuously from said sliding wall, and an inclined hole connected longitudinally and continuously to said sliding hole, said inclined hole having a width smaller than that of said sliding hole, a lower edge that bounds said inclined hole being gradually increased in height from said sliding hole in a direction away from said sliding hole. 7. The guiding unit as claimed in claim 1, further comprising a channel member to receive said rack member and said movement damper, said channel member having a longitudinal top wall extending above said rack member and said movement damper, a bottom wall extending below said rack member and said movement damper, a connecting wall extending downwardly from one end of said top wall and at one side of said rack member and said movement damper to connect to said bottom wall, a channel opening formed at another side of said rack member and said movement damper oppositely of said connecting wall, and a limit wall extending downwardly from another end of said top wall to said channel opening. 8. The guiding unit as claimed in claim 1, wherein said rack teeth have substantially equal height, said rack member further having a pair of retaining walls, said rack teeth being disposed between said retaining walls, said movement damper having a pair of supporting walls respectively and integrally connected to said retaining walls, and a plurality of press teeth connected integrally to and aligned longitudinally with said rack teeth and disposed between said supporting walls, said supporting walls having a width therebetween, which is gradually narrowed from said retaining walls in a direction away from said retaining walls. 9. The guiding unit as claimed in claim 1, the pinion shaft having a journal section, the journal section having a tubular part and an outer cover, the outer cover surrounding the tubular part and made of a flexible material softer than the tubular part. 10. The guiding unit as claimed in claim 9, the rotating mechanism further including at least one movement-transmitting connector, the movement-transmitting connector including a lubricant body positioned to lubricate the journal section. 11. The guiding unit as claimed in claim 10, the movement-transmitting connector including at least one shaft support body for journaling the pinion shaft, the lubricant body disposed in the shaft support body for abutting against the pinion shaft. 12. The guiding unit as claimed in claim 11, the shaft support body having a lubricant supply portion disposed at one side of the pinion shaft and movable upward and downward, the lubricant body being received in the lubricant supply portion. 13. The guiding unit as claimed in claim 11, the movement transmitting connector further including a connecting plate that has a mounting opening, the shaft support body being mounted in the mounting opening. 14. The guiding unit as claimed in claim 9, the pinion shaft further including a spindle-connecting section extending coaxially inside the tubular part, the tubular part and the spindle-connecting section cooperatively defining an annular insert space.