Patent ID: 6109325
Filing Date: 2000-08-29
Classification: B65B,Y10T

Abstract:
A portable electrical binding apparatus including:a motor disposed on the lower portion of the binding apparatus as a driving unit to drive a transmission axle and a worm gear to govern a tensioning unit and a melting unit, in cooperation with bearings on the transmission axle; and the main part of the apparatus being enclosed in a housing with a handle extending to the outside, a switch disposed on the top, and a manual melting lever pivotally attached to the housing; a base being extended beneath the tensioning unit and the melting unit; and arranged under the tensioning unit being a slant frictional board on the inner and upper side of which a micro switch being attached;the said tensioning unit including a driving board and a driven board, wherein the driving board is provided on one side with gears engaged with the transmission mechanism and the driving board is coupled with the driven board by extending a shaft of the former into a sleeve of the latter; the cross-shaped shaft of the gear being inserted with clearance fit into the openings formed on the large and the small friction wheels of the driven board; the driving board being connected at the upper and side comer with a link, which further is coupled at the other end with a driven plate;the driven plate being pivotally attached at the middle to a base and abuts against the inner end of the handle at the free end; and when handle is urged, the driven plate being moved downwardly; the driven plate being provided with a notch disposed on the upper corner near the end thereof connected to the link, which notch is configured to be locked by a stop block; the stop block being connected at one end to the base of the apparatus and a spring that biases the stop block outwardly; the stop block being equipped on the upper portion with a L-shaped seat that has an elongated opening formed on the top to receive a post disposed on the lower portion of the handle; when the handle is lifted at the end, the post urges the stop block to escape from the notch of the driven plate and to move sideways into the base by the L-shaped seat; and the driven plate can be activated by a force exerted on the outer end thereof to urge the tensioning unit to rotate;a swivel rod being pivotally arranged between the tensioning unit and the melting unit, wherein the lower end of the swivel rod is situated by the rear end of the frictional board and the upper end is in touch with a push rod inwardly extending from an adjustment block; the adjustment block being connected at the outer end with a spring adjustment knob; adjusting the spring force can change the contact pressure on the swivel rod exerted by the push rod; the swivel rod being further provided on one side with an extension rod; the extension rod being coupled at the rear end with a strut that extends into an opening on the lower end of the manual melting lever; the extension rod being furnished with a stationary block, and a ring, and a spring disposed between the stationary block and the adjustment block; a pin being extended from the stationary block and stopped on a recessed portion of the swivel rod;the said melting unit including a melting base connected at the inner end to the transmission mechanism to be driven to move to-and-fro, and being further pivotally joined at the upper end with a connection block so that when it is driven to move it acts like a suspender; the connection block being pivotally linked at the upper end with a connection bar, which is further pivotally coupled with a stationary base; the connection bar having a flat surface on the top and a slant surface under the ring of the extension rod, and being provided at the other end with an inverted U-shaped stop block, which extends to the top of a spring; the connection base being furnished on one side with a U-shaped plate; the U-shaped plate having a protrusion on two sides, each protrusion extending into the upper end of a spring; a guide block seated below the U-shaped plate and receiving a square column, which is affixed at the inner end to the stationary base of the apparatus and provided at the upper end with two cylindrical columns that pass through the guide block and extend into the lower ends of two springs; a cutter being fixedly arranged below the guide block; anda spring mounting over an upright column being disposed under the middle segment of the handle; the spring abuts at the top end against the stop block disposed near the end of the connection bar and is adjacent to a tact switch on one side; another spring being hooked at the upper end to a round hole of the driven plate and connected at the lower end to the base so that the free end of the driven plate is urged upwardly.