Screw with knob

Abstract

To provide a screw with a knob that can has the knob protruded from and retracted into the screw and enables the knob to be gripped and rotated to rotate the screw.SOLUTION: The present invention relates to a screw 1 with a knob that has the knob 3 at the head 21 of a screw 2, and the screw with the knob is so constituted that the knob 3 can be moved in parallel with the axis of the screw 2 to be drawn out of or shortened into the screw 2 and the knob 3 is locked to the screw 2 with the knob 3 drawn out or shortened, so the knob 3 can be shortened when not used to reduce exposure and also pulled out of the head 21 of the screw 2 when used to be easily picked up in fingers and rotated.SELECTED DRAWING: Figure 1

Claims

1. A screw with a knob, having a knob on the head of the screw, The knob is configured to be moved in a direction parallel to the axis of the screw, allowing it to be extended or retracted. The knob is configured to be locked to the screw in both the extended and retracted states. A screw with a knob, characterized by the following features.

2. The knob is formed in a substantially U-shape, consisting of two parallel sections extending in a direction parallel to the axis and a connecting section connecting one end of the parallel sections, and the opening of the knob has a claw portion facing inward at the other end of the parallel section. The head of the screw is provided with a knob guide that guides the parallel portion and a claw guide that guides the claw portion of the knob. The claw guide portion has a locking portion that locks the claw portion in the extended and retracted states of the knob. A screw with a knob as described in feature 1.

3. While the knob is being pulled out or retracted relative to the screw, The knob is configured to limit the tilt of the screw by having the claw portion guided by the outer surface of the claw portion guide portion. A screw with a knob as described in feature 2.

4. The aforementioned knob-equipped screw has the head at one end and a threaded portion at the other end, and the space between the head and the threaded portion serves as a device holding portion for the device to hold the knob-equipped screw. Between the screw portion and the equipment holding portion, there is a fixing member mounting portion for attaching a fixing member to the equipment for rotatably holding the knob-equipped screw. A screw with a knob as described in feature 3.

5. The aforementioned claw guide portion is made of resin. A screw with a knob as described in feature 2.

6. The claw guide portion is formed with a groove that guides the claw portion to move in a direction parallel to the axis. A screw with a knob as described in feature 3.

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