JP2007181901A - Screwdriver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screwdriver, surely holding a small screw in simple constitution and preventing dropping of the small screw when attaching and detaching the small screw. <P>SOLUTION: In this screwdriver, a cylindrical holding member 3 for storing and holding the small screws 20 is mounted on a screwdriver shaft 1, a male screw 1b is formed on the screwdriver shaft 1, and a mounting part 4 where a female screw 4b engaging with the male screw 1b is formed is provided on the cylindrical holding member 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a driver including a holding member that holds a screw.

  Conventionally, a screw mounting operation using a screwdriver is generally performed by adhering the screw to the tip of a magnetized driver shaft. If the screw is not fully attracted by the magnet action of the screwdriver shaft, you can damage it by inserting your hand in a narrow space or turning it in the terminal area to support the screw with one hand and turn the screwdriver with the other hand. There was a risk of electric shock from contact. On the other hand, various drivers having a cylindrical holding member that holds a screw on a driver shaft are known (see, for example, Patent Documents 1 to 6).

JP 2000-141239 A JP 2005-46953 A Japanese Patent Laid-Open No. 10-202549 JP 9-174450 A JP-A-8-25241 Japanese Utility Model Publication No. 7-17473

  However, the driver described in Patent Document 1 has difficulty in maintaining the cylindrical holding member at a desired position because the cylindrical holding member slides freely on the driver shaft. Further, the drivers described in Patent Documents 2 to 6 are configured to slide the cylindrical holding member with respect to the driver shaft by the elastic force of the spring. For this reason, when turning the screw, it is necessary to press the screwdriver against the screw head against the elastic force of the spring. There is a problem that the engagement between the tip of the screw and the head of the screw becomes unstable.

  Therefore, the present invention provides a screwdriver that can reliably hold a screw with a simple configuration and can prevent the screw from dropping when the screw is attached or detached.

  In order to solve the above-mentioned problems, the present invention provides a driver in which a cylindrical holding member that accommodates and holds a screw is attached to a driver shaft, and a male screw is formed on the driver shaft, and the male screw is screwed. The present invention provides a driver in which a mounting portion formed with a mating female screw is provided on the cylindrical holding member.

  The present invention provides the driver according to claim 1, wherein the male screw and the female screw are right-handed screws.

  The present invention also provides the driver according to claim 2, wherein the screw pitch of the male screw and the female screw is formed substantially the same as the screw pitch of the screw.

  Moreover, this invention provides the driver in any one of the Claims 1 thru | or 3 which formed the non-slip | skid part in the outer peripheral surface of the said cylindrical holding member.

  According to the driver of the present invention, a screwdriver is provided with a cylindrical holding member that accommodates and holds a screw on a driver shaft, and a female screw is formed on the driver shaft and screwed into the male screw. By having a configuration in which a mounting portion in which a screw is formed is provided on the cylindrical holding member, the feeding amount can be adjusted by rotating the cylindrical holding member with respect to the driver shaft, and screws having different lengths can be adjusted. There is an effect that the cylindrical holding member can be reliably held and the screw can be prevented from falling by maintaining the cylindrical holding member at a desired feeding position.

  In addition, according to the present invention, the male screw and the female screw are right-handed screws. Therefore, when the right-hand screw that is generally used is attached and detached, the screw is held while holding the cylindrical holding member. When the driver shaft is rotated in the tightening direction, the cylindrical holding member is retracted with respect to the driver shaft, and the screw can be automatically fed out from the cylindrical holding member. Further, when the screwdriver shaft is rotated in the direction of loosening the screw while gripping the cylindrical holding member, the cylindrical holding member moves forward with respect to the driver shaft and the screw is automatically accommodated in the cylindrical holding member. There is an effect that can be held.

  According to the present invention, the screw pitch of the male screw and the female screw is formed to be substantially the same as the screw pitch of the screw, thereby rotating the driver shaft while gripping the cylindrical holding member. Since the screwing amount of the screw and the sliding amount of the cylindrical holding member are substantially the same, the screw can be attached and detached in a stable state in which the tip of the cylindrical holding member is in contact with the screw mounting location. effective.

  Moreover, this invention can hold | grip a cylindrical holding member reliably by having the structure in any one of the Claims 1 thru | or 3 which formed the slip prevention part in the outer peripheral surface of the said cylindrical holding member. effective.

Embodiments of the present invention will be described based on examples shown in the drawings.
A screwdriver 10 according to the present invention has a cylindrical holding member 3 for receiving and holding a screw 20 mounted on a driver shaft 1. A male screw 1 b is formed on the driver shaft 1, and a screw is screwed on the male screw 1 b. A mounting portion 4 formed with a mating female screw 4 b is provided on the cylindrical holding member 3.

  In the illustrated embodiment, the driver 10 includes a driver shaft 1 and a grip portion 2. As shown in FIG. 1, the middle portion of the driver shaft 1 is formed with a larger diameter than the tip portion 1a to form a male screw 1b. The shape of the tip portion 1a of the driver shaft 1 is not limited to a plus or minus shape, and can be formed in various shapes that can be engaged with the head portion 21 of the screw 20. Further, the driver shaft 1 is not limited to the one fixed to the grip portion 2 as in the illustrated embodiment, but can be detachably provided on the grip portion or the automatic rotating device.

  The cylindrical holding member 3 includes a cylindrical storage portion 6 that stores and holds the screw 20 and a mounting portion 4 that is mounted on the driver shaft 1. The cylindrical holding member 3 is formed of a flexible insulating material such as synthetic resin or rubber. When the cylindrical holding member 3 is gripped and the driver shaft 1 is inadvertently brought into contact with a terminal portion or the like, Electric shock can be prevented. Further, the cylindrical holding member 3 is made of a transparent or translucent synthetic resin so that the engagement state of the head portion 21 of the screw 20 accommodated in the accommodating portion 6 and the tip end portion 1a of the driver shaft 1 can be confirmed. Preferably it is formed. The cylindrical holding member 3 is not limited to a cylindrical shape as in the illustrated embodiment, and can be formed in a shape that can accommodate and hold screws 20 such as a polygonal column shape.

  As shown in FIG. 1, the mounting portion 4 is formed with a female screw 4 b that is screwed with a male screw 1 b formed on the driver shaft 1. In the illustrated embodiment, the male screw 1b and the female screw 4b are formed as right screws. With this configuration, when the screwdriver shaft 1 is rotated in the direction of tightening the right-hand screw 20 while gripping the cylindrical holding member 3, the cylindrical holding member 3 moves backward with respect to the driver shaft 1 to move the screw 20. It can be automatically fed out from the accommodating part 6. Further, when the screwdriver shaft 1 is rotated in the direction of loosening the right-hand screw 20 while gripping the cylindrical holding member 3, the cylindrical holding member 3 moves forward with respect to the driver shaft 1 to store the screw 20. 6 can be automatically accommodated and held. At this time, the screwing amount of the screw 20 into the mounting portion 22 and the sliding amount of the cylindrical holding member 3 are made substantially the same, and the screw 20 is fixed in a stable state where the tip of the cylindrical holding member 3 is in contact with the mounting portion 22. It is preferable that the screw pitch of the male screw 1b and the female screw 4b is formed substantially the same as the screw pitch of the screw 20 so that it can be attached and detached.

  Further, in the illustrated embodiment, an anti-slip portion 5 is formed on the outer peripheral surface of the mounting portion 4, and the driver shaft 1 is rotated while gripping the outer peripheral surface of the mounting portion 4 of the cylindrical holding member 3. Sometimes, the cylindrical holding member 3 is configured not to rotate with the driver shaft 1.

Next, a procedure for removing the screw 20 attached to the attachment portion 22 using the screwdriver according to the present invention will be described.
As shown in FIG. 2, the tip end portion 1 a of the driver shaft 1 is engaged with the head portion 21 of the screw 20. The cylindrical holding member 3 is rotated so as to be aligned with the position where the tip of the accommodating portion 6 contacts the attachment portion 22.
Then, while holding the outer peripheral surface of the mounting portion 4 of the cylindrical holding member 3 with one hand, the screw 10 is loosened by turning the driver 10 with the other hand. When the screwdriver shaft 1 is rotated in the direction of loosening the right-hand screw 20, the cylindrical holding member 3 moves forward with respect to the screwdriver shaft 1 as shown in FIG. In addition, the driver 10 can be rotated in a stable posture while maintaining the state where the tip of the accommodating portion 6 is in contact with the mounting portion 22. When the screw 10 is further removed from the mounting portion 22 by turning the screwdriver 10, the screw 20 is recovered with the tip 1a of the driver shaft 1 facing upward as shown in FIG.

A procedure for attaching the screw 20 to the attachment portion 22 using the screwdriver according to the present invention will be described.
As shown in FIG. 4, the cylindrical holding member 3 is rotated so that the tip end portion 1 a of the driver shaft 1 is positioned in the housing portion 6. The screw 20 is housed in the housing 6 and the head 21 of the screw 20 and the tip 1a of the driver shaft 1 are engaged. The cylindrical holding member 3 is rotated and adjusted to a position where the tip of the screw 20 slightly protrudes from the accommodating portion 6.
As shown in FIG. 3, the driver 10 is turned with the other hand while the tip of the accommodating part 6 is brought into contact with the mounting part 22 and the outer surface of the mounting part 4 of the cylindrical holding member 3 is held with one hand. Then tighten the screw 20. When the driver shaft 1 is rotated in the direction in which the right screw 20 is tightened, as shown in FIG. 2, the cylindrical holding member 3 moves backward with respect to the driver shaft 1 and automatically feeds the screw 20 from the housing portion 6. The screw 20 can be screwed into the mounting portion 22.

Sectional drawing which shows one Example of the cable holding device which concerns on this invention. The perspective view which shows the use condition of the one Example. The perspective view which shows the use condition of the one Example. The perspective view which shows the use condition of the one Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Driver shaft 1a Tip part 1b Male screw 2 Grip part 3 Cylindrical holding member 4 Mounting part 4b Female screw 5 Non-slip part 6 Storage part 10 Driver 20 Screw 21 Head part 22 Attachment part

Claims (4)

  A driver in which a cylindrical holding member that accommodates and holds a screw is mounted on a driver shaft, and a mounting portion in which a male screw is formed on the driver shaft and a female screw that is screwed to the male screw is formed on the cylinder Screwdriver provided on the holding member.   The driver according to claim 1, wherein the male screw and the female screw are right-hand screws.   The screwdriver according to claim 2, wherein the screw pitch of the male screw and the female screw is formed substantially the same as the screw pitch of the screw. The driver according to any one of claims 1 to 3, wherein an anti-slip portion is formed on an outer peripheral surface of the cylindrical holding member.

Images