초록 ▼

A tying device including a seat body, a ratchet wheel, a driving member, a shaft and a detent member. A shaft is passed through the seat body and connected with the ratchet wheel. The driving member is pivotally connected with the shaft. The driving member can be wrenched to engage the detent member

A tying device including a seat body, a ratchet wheel, a driving member, a shaft and a detent member. A shaft is passed through the seat body and connected with the ratchet wheel. The driving member is pivotally connected with the shaft. The driving member can be wrenched to engage the detent member with different ratchets of the ratchet wheel so as to wind or release a tying belt connected with the shaft.

대표청구항 ▼

What is claimed is: 1. A tying device comprising: a seat body having two opposite sidewalls each of which is formed with a shaft hole for a shaft to pass therethrough, the shaft being formed with a slot for a tying belt to pass through, one end of the shaft being formed with a flange on an outer si

What is claimed is: 1. A tying device comprising: a seat body having two opposite sidewalls each of which is formed with a shaft hole for a shaft to pass therethrough, the shaft being formed with a slot for a tying belt to pass through, one end of the shaft being formed with a flange on an outer side of one sidewall of the seat body; a driving member pivotally connected with the end of the shaft; a ratchet wheel fixed with the shaft between the driving member and the one sidewall of the seat body, a rock arm radially extending outward from the driving member, a free end of the rock arm being pivotally connected with an engaging block, a cam section radially projecting from the driving member opposite to the rock arm, the cam section being slightly larger than the outer diameter of the ratchet wheel, the cam section having an outwardly projecting stopper block; and a detent member pivotally disposed on the sidewall of the seat body above the ratchet wheel, the detent member being engageable with the ratchet wheel, the detent member having a thickness larger than the thickness of the ratchet wheel, whereby an edge of the cam section can push the detent member to swing upward. 2. The tying device as claimed in claim 1, wherein a stopper section outwardly projects from a bottom end of the sidewall, whereby when the edge of the cam section pushes the detent member, the stopper section stops the engaging block to restrict the pivoting angle of a driving member. 3. The tying device as claimed in claim 2, wherein the driving member has a cylindrical driving section, a circumference of the driving section being formed with several circular holes at intervals. 4. The tying device as claimed in claim 3, wherein a torque spring is disposed between the rock arm of the driving member and the engaging block. 5. The tying device as claimed in claim 4, wherein via a pin, the engaging block is pivotally connected with a free end of the rock arm, a shift arm extending from one side of the engaging block, the shift arm and the engaging block containing a certain angle. 6. The tying device as claimed in claim 1, wherein a surface of the shaft is formed with two symmetrical grooves axially extending from one end of the shaft, to the other end of the shaft, bottoms of the grooves being formed with two slots, a center of the ratchet wheel being formed with a mounting hole having a diameter approximately equal to the diameter of the shaft, the mounting hole having teeth corresponding to the grooves and for inserting into the grooves. 7. The tying device as claimed in claim 6, wherein a stopper section outwardly projects from bottom end of the one sidewall, whereby when the edge of the cam section pushes the detent member, the stopper section stops the engaging block to restrict a pivoting angle of the driving member. 8. The tying device as claimed in claim 7, wherein the driving member has a cylindrical driving section, a circumference of the driving section being formed with several circular holes at intervals. 9. The tying device as claimed in claim 8, wherein a torque spring is disposed between the rock arm of the driving member and the engaging block. 10. The tying device as claimed in claim 9, wherein via a pin, the engaging block is pivotally connected with the free end of the rock arm, a shift arm extending from one side of the engaging block, the shift arm and the engaging block containing a certain angle. 11. The tying device as claimed in claim 1, wherein the driving member has a polygonal column-shaped driving section. 12. The tying device as claimed in claim 1, wherein a cross-face of the ratchet wheel is formed with two semicircular holes, two opposite semicircular slats which form a circular shaft being fitted through the two semicircular holes of the ratchet wheel, an L-shaped bar being inserted between the semicircular slats and fixedly welded therewith, the semicircular slats defining therebetween a gap as a slot.