Pulling device of brake cable of cart

Abstract

The invention discloses a pulling device of a brake cable of a cart. The pulling device of the brake cable of the cart comprises a pressing block (1), a lever bar (2) and a casing pipe (3), wherein the lever bar (2) is arranged inside the inner cavity (41) of a push rod (4), the casing pipe (3) can move up and down to wrap the upper portion of the push rod (4), an opening (42) is formed in the top of the push rod (4), the lower portion of the pressing block (1) stretches into the inner cavity (41) of the push rod (4) through the opening (42) to be connected with one end of the lever bar (2) in a supporting mode, the other end of the lever bar (2) is connected with the brake cable (5), the lever bar (2) is movably connected with the push rod (4) through a rotary shaft (6), and the upper portion of the pressing block (1) is supported on the inner wall of the top surface of the casing pipe (3). The pulling device of the brake cable of the cart has the advantages that when the casing pipe on the push rod is held by the hand and is pressed downward automatically under the action of the gravity, the casing pipe moves downwards to drive the pressing block to be pressed downward, a brake core is pulled upward, and the cart can be moved front and back normally; when the push rod is disengaged from the hand, one end of the lever bar tilts upward due to the self-weight of the lever bar and the casing pipe is driven move upward to return to the original position, namely the brake part is automatically locked by the brake core.

Description

technical field [0001] The invention relates to the technical field of manufacturing a brake device for a cart, in particular to a pulling device for a brake line of a cart. Background technique [0002] An existing Chinese invention patent No. 201110194869.0 titled "A Baby Stroller Automatic Braking Device" discloses a structure, which includes a left side and a right side independently present at the rear end of the stroller, each independent The brake device includes a moving sleeve, a positioning sleeve, a wheel seat, a compression spring, a brake shaft, and a brake line with a horizontal head on the upper end. The brake line is directly connected to the brake shaft or indirectly connected through a double-layer kit. The thrust on the handle lifts the brake line and the brake shaft between the adjacent brake teeth of the wheel to unlock the brake; when the manual thrust on the handle is removed, the spring tension in the wheel seat pushes the brake shaft to quickly cut i...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this brake device is that the design structure is unreasonable. Because the extension of the brake line in the brake device requires the handle to be pressed down to pull the brake line, the pulling structure is easily damaged. It is not good, that is, the brakes cannot stop the baby stroller in time and cause an accident

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