Ratchet wrench

Abstract

The invention provides a ratchet wrench, comprising a body, a driving body, a clamping and pulling block, a changeover switch and a control element, wherein the control element is sleeved on a pivot column of the driving body; a locating element is arranged between the control element and the changeover switch, thus effectively lowering the production cost; the control element is directly linked with the changeover switch, thus effectively improving the operation sensitivity and reducing errors; the locating element is provided with two locating slots which have selective locating relations of two locations with the linkage end of the changeover switch; and the locating effect of the control element is achieved by the linkage end of the changeover switch; therefore, the locating structure is unnecessary to be additionally processed on the wrench body, thus effectively lowering the production cost.

Description

technical field [0001] The invention relates to a wrench tool, especially a ratchet wrench with direct linkage and positioning effects between a control part and a reversing switch. Background technique [0002] Please refer to the "Reversible Ratchet Wrench" patent case of US Patent No. 7,278,339, which is a reversible ratchet wrench. This ratchet wrench uses a ring to drive a switching member to produce position changes in two directions, and the front end of the switching member is equipped with a pressing member and an elastic element to elastically push the trigger A pawl allows the pawl to be controlled to move between two positions and engages a drive member. [0003] Firstly, it can be noticed that the reversing ratchet wrench uses a reversing plate to perform the reversing action, and the reversing plate is pivoted on the rotating assembly and can be operated by the user. [0004] In many workplaces, it is necessary for the user to work with his head up, and the s...

AI Technical Summary

Problems solved by technology

[0004] In many workplaces, it is necessary for the user to work with his head up, and the square head end of the rotating assembly of the ratchet wrench is facing upwards (against the gravity), and then a sleeve or sleeve extension is connected above the square end of the rotating assembly In this case, the rotating assembly bears the weight of the sleeve or the extension rod of the sleeve, and sometimes includes the weight of the work object itself. At this time, if the user wants to switch the ratcheting direction and operate When turning the piece, you will find it difficult to switch the piece. In this case, you must remove the sleeve or the sleeve extension rod from the square end of the rotating assembly, so that the square end of the rotating assembly is facing downwards. Properly switch the direction of the toggle piece, it is not convenient to use

[0005] Moreover, when the user operates the toggle piece, the ring will move with the toggle piece, causing friction between the ring and the end face of the rotating assembly. Under long-term repeated operations, such friction will cause the wear of the ring, and then generate iron filings to form the operation Unsmooth problem

[0006] In order to make the toggle piece have a good positioning effect, usually the positioning structure is processed on the wrench, such as the pin (pin) and the pin hole (pin hole), and then the positioning device on the toggle piece is used to generate positioning with the pin relationship, but the design of processing the positioning structure on the wrench usually increases the cost of the entire reversing ratchet wrench, and the market demand is not easy to expand, forming an obstacle to sales

[0007] Moreover, there are quite a lot of related parts connected between the toggle piece and the conversion assembly, and there will be gaps between each part, so when the user operates the toggle piece, it will cause sluggish operation between the various parts, resulting in The problem of insensitivity of the conversion components. If the wrench is insensitive, it will not be able to upgrade the wrench to a high-end product, and it will not stimulate consumers' desire to buy.

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