Patent ID: 6739616
Filing Date: 2004-05-25
Classification: B62B

Abstract:
A foldable three-wheel baby carriage with a shock-absorbing function, comprising a front wheel, two front frames, two push bars each having a bent upper end provided with a horizontal section, two rear wheels, two rear frames, two connecting devices each mounted between a respective one of the two front frames and a respective one of the two push bars, an operation device mounted on the horizontal section of each of the two push bars, a front shock-absorbing device mounted between the front wheel and the two front frames, two rear connecting devices each mounted between a respective one of the two rear wheels and a respective one of the two rear frames, and two rear shock-absorbing devices each mounted between a respective one of the two rear wheels and a respective one of the two rear frames, wherein:each of the two connecting devices includes a front frame mounting seat, a push bar mounting seat, a mounting rod, a movable block, and a mounting rod fixing seat; the operation device includes a lower cover, an upper cover, two driving plates, a lower press board, and a pull block; the front shock-absorbing device includes two upper seats, two shaft seats, two elastic members, a support rack, and a caliper brake, wherein: each of the two upper seats of the front shock-absorbing device is secured on the lower end of a respective one of the two front frames, each of the two upper seats of the front shock-absorbing device has an upper end provided with a support block and a lower end provided with a ring formed with a concave portion, the support block of each of the two upper seats of the front shock-absorbing device has a top provided with a lug formed with a through hole and provided with a concave face; each of the two shaft seats of the front shock-absorbing device is mounted on the lower end of a respective one of the two front frames, and has a top face provided with a ring formed with a concave portion, each of the two shaft seats of the front shock-absorbing device has a wall formed with two through holes aligning with two oblong slots of the lower end each of the two front frames for passage of two rivet members, each of the two shaft seats of the front shock-absorbing device has a lower end provided with a support plate formed with an elongated opening for mounting the wheel shaft of the front wheel, each of the two shaft seats of the front shock-absorbing device has a rear side integrally formed with a hollow sleeve having a wall formed with two through holes; each of the two elastic members of the front shock-absorbing device is mounted on the lower end of a respective one of the two front frames, and has an upper end mounted in the concave portion of the ring of the upper seat and a lower end mounted in the concave portion of the ring of the shaft seat; the support rack of the front shock-absorbing device has two vertical sections each mounted in the hollow sleeve of each of the two shaft seats and each having a wall formed with two through holes aligning with the two through holes of the hollow sleeve for passage of two rivet members, the support rack of the front shock-absorbing device has a horizontal section formed with a through hole; and the caliper brake of the front shock-absorbing device is mounted, on the support rack and is provided with a threaded rod extended through the through hole of the support rack and screwed with a nut, the caliper brake of the front shock-absorbing device is provided with two brake calipers, and a brake cable having a lower end secured on one of the two brake calipers and an upper end extended along the front frame and the push bar and secured on a brake lever mounted on the horizontal section of the push bar; each of the two rear connecting devices includes a wheel seat, an elbow, a straddle rod, and a locking block; and each of the two rear shock-absorbing devices includes two pads, four knobs, two inner rods, and two elastic members.