Tool starter head torsion releasing and on-off structure

Abstract

The invention provides a torque force releasing and clutching structure for an opener head. A clutch structure is arranged on an extension rod body; the clutch structure is provided with a spring; an internal top ball is arranged at one side of the spring, and is fixed with an internal gasket; due to the internal gasket, the spring and the internal top ball can be limited in a slot of the clutch structure so as to ensure conformability of back and forth tracks of the clutch structure; therefore, when a screw is locked to a set depth, at the moment that the opener head of a hand tool is retracted from a locking slot by a user, the clutch structure is about to push the opener head forward, and leads a torque force release steel ball to release the opener head in time, here, even the hand tool still has remained torque force, the extension rod body can present idling condition so as to maintain standing condition for the opener head. Therefore, the structure can prevent the body or life of the user from being hurt by the remained torque force which returns to the user holding the hand tool through the locked screw, besides ensuring that the remained torque force of the hand tool is prevented from causing improper damage or crash to the locking slot of the screw.

Description

technical field [0001] The present invention relates to a tool screwdriver head torque release and clutch structure, especially a clutch structure on the extension rod body, so that the torque release steel ball can release the screwdriver head in a timely manner, even if the hand tool still has remaining torque, it can only allow the extension rod body In the idling state, the screwdriver head will not rotate. In addition to ensuring that the remaining torque of the hand tool will not cause undue damage and impact to the locking groove of the locked screw, it will also prevent the remaining torque from passing through the fixed screw. Going back to the user who holds the hand tool, the torque release and clutch structure of the tool driver head that causes harm to the user's body or life. Background technique [0002] Known tool bit clamping structures, such as U.S. Patent No. 4,287,923 and No. 4,753,142 shown in Figures 1 to 3, in this known structure, a connecting rod por...

AI Technical Summary

Problems solved by technology

[0003] However, in the aforementioned known structure, when the screw is locked in the state shown in Figure 1, the protruding length of the screwdriver head cannot be adjusted according to the needs. Lock to the required depth, for example, the spinning head screw may have to leave a long head on the workpiece, resulting in poor locking effect

Furthermore, the elastic buckle 141 is used to fix the screwdriver head 17 and the joint groove 14 of the extension rod body 1. Although the elastic buckle 141 can fully position the screwdriver head, it is also extremely difficult to replace, and most of them need to be replaced. Only with a pair of pliers can the bit of the screwdriver be clamped out, causing inconvenience to the user

[0004] As shown in Figures 4 and 5, the second known structure is the patent right of Taiwan New Patent No. M247354. The second known structure is that a spring 80 is arranged inside the post body 8, Although the spring 80 can push the screwdriver bit 81 forward, because the screwdriver bit coupling groove 82 of the post body 8 is hexagonal for matching the shape of the rear part of the screwdriver bit, even if the screwdriver bit can be pushed, it cannot The function of clutching the screwdriver head to release the torque

[0005] The common disadvantage of the aforementioned first and second known structures is that after the user locks the screw to a predetermined depth with the screwdriver head of the clamping mechanism, the user releases the hand tool switch before the screwdriver head completely stops rotating. , that is, it will be eager to pull the screwdriver head away from the locking groove of the screw. At this time, in addition to the remaining torque from the power motor in the hand tool, the screwdriver head will directly destroy the locking groove of the screw, and the remaining torque will also It may cause danger to the user. The most common one is the user who locks the metal plate on the roof, because these users often pull out the power tool immediately after the screw is locked to a certain depth in order to complete the work as soon as possible. And prepare to move the body to the locked position of the next screw, that is, the user’s body is in the most unbalanced standing state at this time. Therefore, in the process of pulling out the hand tool, the aforementioned residual torque will be generated by the fixed screw. A certain amount of backtracking stress, which will be directly transmitted to the user holding the hand tool, when the user lacks balance in order to move the body, the backtracking stress will cause the user’s body to shake, causing the user to be caught danger of falling to the ground

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