JP2011236979A - Fall prevention tool of screw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention tool of a screw which can prevent falling of the screw and a washer during operation.SOLUTION: The fall prevention tool of the screw for preventing the falling of the screw includes: a screw supporting part having a U-shaped opening with a width larger than a diameter of the screw and smaller than the screw head; and a grip supporting part integrally formed with the screw supporting part, which an operator holds with hands where a grip of a screwdriver is supported with an engaging end of the screwdriver inserted into an engaging groove formed on the supported screw head and with the U-shaped opening of the screw supporting part upward.

Description

  The present invention relates to a screw fall prevention tool for preventing a screw from dropping during a screw attaching / detaching operation.

  A semiconductor wafer formed on the surface by dividing a plurality of devices such as IC, LSI, etc. by dividing lines is ground to a predetermined thickness by a grinding machine and then divided into individual devices by a dicing machine The divided devices are used for electric devices such as mobile phones and personal computers.

  The grinding apparatus includes a chuck table for sucking and holding the wafer, a grinding means for grinding the wafer while supplying grinding water to the wafer held by the chuck table, a conveying means for conveying the wafer to the chuck table, and grinding from the chuck table. It is generally composed of unloading means for unloading a used wafer and cleaning means for supplying cleaning water to the unloaded wafer and cleaning it, and the wafer can be processed to a desired thickness.

  The dicing apparatus also includes a chuck table for sucking and holding the wafer, a cutting means for cutting the wafer while supplying cutting water to the wafer sucked and held by the chuck table, a transport means for transporting the wafer to the chuck table, and a chuck. It is generally formed from unloading means for unloading a wafer that has been cut from the table and cleaning means for supplying cleaning water to the unloaded wafer for cleaning, and the wafer can be divided into individual devices with high accuracy. .

  Such processing equipment such as grinding equipment and dicing equipment is covered with parts such as covers, air pipes, water pipes, suction pipes, wiring, and drive parts that cover the equipment, and it is necessary to perform maintenance regularly. If there is a failure, these parts must be repaired.

JP-A-1-205950 JP-A-55-112761

  When performing maintenance, repair, etc. of the processing equipment as described above, if a tool is put in a narrow place where workability is poor and disassembly or installation work is performed, screws or washers may be dropped. There is a problem that it is difficult to pick up the washer.

  This invention is made | formed in view of such a point, The place made into the objective is providing the screw fall prevention tool which can prevent the fall of a screw and a washer during an operation | work.

  According to the present invention, there is provided a screw drop prevention device for preventing a screw from falling, the screw support having a U-shaped opening having a width larger than the diameter of the screw and smaller than the head of the screw, and the screw support. The screw driver's engaging end is inserted into an engaging groove formed in the head of the screw that is integrally formed and supported with the U-shaped opening of the screw supporting portion facing upward. Provided is a screw fall prevention tool characterized by comprising a gripping body support portion that supports a gripping body and is held by an operator.

  According to the screw fall prevention device of the present invention, the engagement end portion of the screw driver is inserted into the engagement groove formed at the head of the screw so that the screw is supported by the U-shaped opening, and the screw and the washer are When the screw driver is rotated forward with the screw-shaped opening and the engagement end of the screw driver sandwiched, and the screw is screwed into the female screw, the screw is surely screwed without dropping the screw and washer. be able to.

  Further, when removing the screw, the screw driver is reversed to loosen the screw, the U-shaped opening is inserted into the gap between the female screw and the washer, and the screw driver is further reversed while supporting the screw and washer. The screw and washer can be removed without dropping.

It is a perspective view of the screw fall prevention tool and related screw and screwdriver concerning an embodiment of the present invention. It is a perspective view in the state where a screw is fastened using a screw fall prevention tool.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Referring to FIG. 1, there is shown a perspective view of the screw drop prevention device 2 and the related screw 10 and screw driver 16 according to an embodiment of the present invention.

  The screw fall prevention device 2 includes a screw support portion 4 having a U-shaped opening 6 having a width larger than the diameter of the screw 10 and smaller than the diameter of the screw head 12, and a screw support portion 4 formed integrally with the screw support portion 4. It is comprised from the holding body support part 8 extended from the part 4 in a substantially right angle direction.

  For example, a cross-shaped engagement groove 13 is formed in the head 12 of the screw 10. 14 is a washer. The screw driver 16 is formed with an engagement end 20 that engages with the engagement groove 13 of the screw 10 at the tip of the stem (handle) 18, and an operator holds the screw driver 16 on the root side of the stem 18. A gripping body 22 is integrally connected.

  As shown in FIG. 2, the gripping body support portion 8 of the screw fall prevention tool 2 has an engagement groove formed in the head 12 of the screw 10 supported with the U-shaped opening 6 of the screw support portion 4 facing upward. In the state where the engagement end portion 20 of the screw driver 16 is inserted into 13, the grip body 22 of the screw driver 16 is supported, and the operator is adapted to be gripped by a hand when attaching and detaching the screw.

  Next, with reference to FIG. 2, the attachment / detachment operation | work of the screw 10 using the screw fall prevention tool 2 is demonstrated. In order to screw the screw 10 to the female screw 26 formed on the member 24, the engagement end portion 20 of the screw driver 16 is inserted into the engagement groove 13 formed on the head 12 of the screw 10, and the screw 10 is screwed. The screw driver 16 is normally rotated in a state where the screw 10 and the washer 14 are sandwiched between the U-shaped opening 6 and the engagement end portion 20 of the screw driver 16 while being supported by the U-shaped opening 6 of the support portion 4. Then, the screw 10 is screwed into the female screw 26.

  When the U-shaped opening 6 of the support portion 4 is removed from the female screw 26 while the gap is formed between the screw 10 and the male screw 26 and the screw driver 16 is rotated forward, the screw 10 and the washer 14 are dropped. The screw 10 can be securely screwed in without being caused.

  When removing the screw 10, the screw driver 16 is reversed to loosen the screw 10, the U-shaped opening 6 of the screw support portion 4 is inserted into the gap between the female screw 26 and the washer 14, and the screw 10 and washer When the screw driver 16 is further reversed in a state where the screw 14 is supported, the screw 10 and the washer 14 can be removed without dropping.

2 Screw fall prevention tool 4 Screw support portion 6 U-shaped opening 8 Grip body support portion 10 Screw 12 Screw head 13 Engagement groove 14 Washer 16 Screw driver 20 Engagement end portion 22 Grip body 26 Female screw

Claims (1)

A screw fall prevention tool for preventing the screw from falling,
A screw support with a U-shaped opening having a width larger than the diameter of the screw and smaller than the head of the screw;
An engagement end portion of the screw driver is inserted into an engagement groove formed in the head of the screw formed integrally with the screw support portion and supported with the U-shaped opening of the screw support portion facing up. While supporting the grip body of the screw driver in the state, a grip body support portion that the operator holds with the hand,
A screw fall prevention device comprising:

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