Multi-stage transmission vehicle safety tensioning device

Abstract

The invention relates to an automobile safety tension device which comprises a base assembly and a handle assembly, and the two assemblies are connected by a multi-stage transmission assembly; the multi-stage transmission assembly comprises a transmission shaft and a main rotary shaft, wherein the transmission shaft is used for pivoting a base of the base assembly with a handle of the handle assembly, and the main rotary shaft is used for winding a long binding tape and is fixed on the base; the transmission shaft is fixedly provided with a transmission wheel; and the transmission wheel achieves the rotating state required by winding, the non-rotating state required by locking and the idling state required by releasing under the action of the base assembly and the handle assembly. Becauseof adopting multi-stage transmission, after a small force exerted on the handle is converted a plurality of times, a large binding force can be obtained on the binding tape finally; and through increasing or reducing the number of transmission stages and changing the transmission ratio of each-stage transmission, under the condition of applying a same handle holding force, different sizes of binding forces can be obtained.

Description

technical field [0001] The invention relates to an automobile safety tensioning device which is used on various automobiles, trucks, trailers and motorcycles and can conveniently bind and fix goods. Background technique [0002] The car safety tensioning device is usually composed of the main body of the tensioning device, a long strap and a short strap. The main body part adopts the principle of an anti-reverse ratchet mechanism, and the handle directly drives the active pawl, the active pawl pushes the ratchet, and the ratchet directly drives the main body. shaft, thereby tensioning the straps wrapped around the main shaft. The stop ratchet prevents the ratchet from reversing, so that a certain tension can be maintained on the strap, and the goods are bundled and fixed. [0003] According to the relevant principles of mechanics, when the human hand exerts a certain force on the handle, a large binding force can be obtained on the binding belt. This binding force is relati...

AI Technical Summary

Problems solved by technology

[0003] According to the relevant principles of mechanics, when the human hand exerts a certain force on the handle, a large binding force can be obtained on the binding belt. This binding force is relatively fixed and mainly depends on the length of the handle. If the binding force is too small, it is not enough to tighten Cargo will cause hidden dangers to driving safety. Therefore, increasing the binding force is the direction of joint efforts in the industry

[0004] If the force exerted on the handle is the same, when it is necessary to increase the binding force, the general method is to increase the length of the handle, that is, lengthen the force arm, so that the entire device will be very long in size, high in cost, and inconvenient to carry, transport and operate

There are also tensioning devices designed as folding handles or telescopic handles. Although short handles can be used for carrying and transportation, and long handles are used for operation, the structure is complicated, the operation is inconvenient, and the cost is high.

Images