A kind of knob type needle lock head

Abstract

The invention relates to a knob-type needle lock head, which includes a slider body, a movable part, an elastic part and a rotating part. The slider body includes an upper wing, a lower wing and a connecting column, and a guide column is arranged on the upper wing. It also includes a movable part that can move axially along the guide post, the lock pin is arranged on the movable part, the movable part is sleeved outside the guide post, the rotating part is sleeved outside the movable part, and a limit part is set on the guide post. An elastic component is arranged between the part and the movable part, and a control mechanism for driving the movable part to move up and down is included, and the control mechanism is a concave part and a raised part that cooperate with each other. In this way, the unlocking of the zipper can be realized only by turning at a small angle, and the operation is very convenient. Moreover, when the raised part is separated from the concave part, the lock pin is always in a position separated from the zipper, which can ensure the smooth and stable sliding of the slider on the zipper. When the slider slides to a predetermined position, the rotating part is rotated again, so that the protrusion falls into the recessed part, the movable part returns to its position under the action of the elastic part, and the lock pin realizes braking of the zipper.

Description

technical field [0001] The invention belongs to the technical field of sliders, and in particular relates to a knob type needle lock head. Background technique [0002] Sliders and zippers are widely used in daily life. Traditional self-locking sliders generally include a slider body, a horse hook, elastic parts, a cap and a pull tab. When using the pull tab, the pull tab overcomes the tension of the elastic part. The elastic force lifts the hook from the chain teeth of the zipper to unlock the zipper. After the slider slides to the predetermined position on the zipper, release the pull piece, and the hook returns to its position under the action of the elastic part to realize the unlocking of the zipper. brake. With this structure, during the sliding process of the slider, the user always needs to exert a certain force on the hook through the pull tab to make the hook completely leave the zipper teeth. If the hook does not leave the zipper teeth, the slider will slide on t...

AI Technical Summary

Problems solved by technology

[0004] In the use of this kind of rotary slider, the cap is threaded on the threaded column. Usually, the cap needs to be turned several times to completely lift the horse hook from the zipper. Similarly, when braking, the cap needs to be turned It takes multiple turns to make the horse hook stably embedded between the chain teeth of the zipper, so the operation is relatively time-consuming

At the same time, by setting the fixing part, the self-locking and unlocking of the slider cannot be realized without removing the locking of the fixing part. This setting will affect the convenience of the entire slider.

Furthermore, since the hook is set separately in this solution, the hook may rotate or deviate from the axis of the hook during use, which affects the braking effect of the hook

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