Ratchet wrench with jamming-preventing and indicating functions

Abstract

The ratchet wrench includes a main body with communicated holding slot and holding space as well as a through hole communicated to the holding slot; a clamping block held in the holding slot; a fixed part in the through hole and the clamping block to limit the clamping block in the holding slot and to form an indicating mark on one side of the main body; a ratchet wheel with several ratchets; a ratchet block with several ratchets on its one end to mesh with those in the ratchet wheel and capable of being set in the holding slot; and an elastomer between the ratchet block and the clamping block. The turning direction of the wrench can be known via the mark and the ratchet block may be made to separate from the ratchet wheel via pushing the clamping block to prevent jamming.

Description

technical field [0001] The invention relates to the field of hand tools, in particular to a ratchet wrench with anti-jamming and marking functions. Background technique [0002] As we all know, the related industries of hand tools have a long history of development, so the current development space is quite limited, and the survival of the industry is facing challenges. Therefore, only continuous development and innovation can survive, so we can continue to use various Combining forms with various appliances, new forms are produced to increase the added value of products and effectively reduce costs. In a field with limited development space, how to maintain competitiveness is an element that is desperately awaiting breakthroughs in the industry today. [0003] For the traditional ratchet wrench with one-way locking, the user generally cannot know the turning direction of the wrench, and it is easy to turn the wrench in the wrong direction during operation and use, so the wr...

AI Technical Summary

Problems solved by technology

[0003] For the traditional ratchet wrench with one-way locking, the user generally cannot know the turning direction of the wrench, and it is easy to turn the wrench in the wrong direction during operation and use, so the wrench needs to be turned over and then placed on the bolt. Turning the wrench wastes a lot of precious time. If a mark needs to be marked on the outer edge of the wrench for identification, it needs to be processed separately, which will increase the processing procedure and increase the production cost.

Please refer to the view of the existing related wrench, which is a Chinese Taiwan patent (patent announcement number 431260, titled "improved wrench structure"), and its main technical content is assembled with a clamping block in the ratchet wrench accommodation space 24 30 and a sliding top block 40, the sliding top block 40 is provided with a protruding swing fulcrum 41 on one side corresponding to the accommodating space 24, and two protrusions 42 are provided on the side corresponding to the stepped through hole, the sliding top block 40 The concave-convex tooth shape of the ratchet 52 of the sleeve ring 50 and the protrusions 42 on both sides can be used to push against each other, so that the sliding top block 40 can continuously swing without displacement, and the elastic component 44 at one end of the sliding top block 40 can be used to maintain The one-way clamping force of the ratchet 32 ​​of the clamping block 30, the protrusion 42 of the sliding top block 40 of this traditional structure is to interact with the ratchet 52 of the sleeve ring 50, which will make the ratchet of the sleeve ring 50 The tooth 52 causes wear and tear, and when the fitting ring 50 retreats and rotates counterclockwise, since there is no limit combination between the sliding top block 40 and the accommodating space 24, the force of this counterclockwise rotation will inevitably move the sliding top block 40 moves towards the upper right of the accommodating space 24, which will cause the sliding top block 40 to be stuck between the sleeve ring 50 and the accommodating space 24, and because the sliding top block 40 is in the accommodating space 24 with its swing fulcrum 41 Constantly swing, so the placement position of the sliding top block 40 will affect the angle at which it can swing. If it is placed at the upper end of the accommodating space 24, the pulling angle of the sliding top block 40 will be smaller. At the lower end of the accommodating space 24, the swing angle of the sliding top block 40 is relatively large. This design increases the difficulty of assembly. The sliding top block 40 is shifted from the original placement position due to knocking or vibration of unknown factors, which will make the sliding top block 40 unable to move smoothly. This traditional wrench structure has quite a lot of shortcomings in operation and use. It is necessary to develop and improve it

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