JP2012056031A - Screwdriver tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screwdriver tool, capable of removing dust when clogged in an engagement groove for engaging an engagement part of the screwdriver tool, which is formed on the head of a male screw, and also capable of reproducing the engagement groove if collapsed.SOLUTION: The screwdriver tool is provided with the engagement part for engaging in the engagement groove formed on the head of the male screw. The screwdriver tool includes: an operation shaft unit with the engagement part for engaging in the engagement groove; a gripper for slidably housing the operation shaft unit in an axial direction; and a pressing unit for pressing the operation shaft unit housed in the gripper toward the side of the engagement part.

Description

  The present invention relates to a driver tool used for loosening a male screw such as a screw that fastens a part.

  In the semiconductor device manufacturing process, a plurality of regions are partitioned by dividing lines called streets arranged in a lattice pattern on the surface of a substantially wafer-shaped semiconductor wafer, and devices such as ICs, LSIs, etc. are partitioned in the partitioned regions. Form. Then, the semiconductor wafer is cut along the streets to divide the region in which the device is formed to manufacture individual semiconductor devices. The wafer divided in this way is ground to a predetermined thickness by a grinding device before being cut along the street.

  Processing devices such as a cutting device and a grinding device need to be regularly maintained, and to perform operations such as repair and replacement of parts. When carrying out these operations, it is necessary to remove the male screw to which each component is attached.

  Thus, in a configuration in which the male screw to which the component is attached is provided with an engaging groove for engaging the engaging part of the driver tool with the head, the engaging groove formed in the head is clogged with dust. If the engagement groove is crushed, the engagement portion of the driver tool cannot be engaged with the engagement groove, and the male screw cannot be loosened and removed.

  The present invention has been made in view of the above-mentioned facts, and the main technical problem thereof is that when dust is clogged in the engaging groove that is formed on the head of the male screw and engages the engaging portion of the driver tool. It is an object of the present invention to provide a driver tool that can remove clogged dust and can be regenerated when an engagement groove is crushed.

In order to solve the main technical problem, according to the present invention, a driver tool including an engaging portion that engages with an engaging groove formed in a head of a male screw,
An operating shaft means having an engaging portion that engages with the engaging groove, a gripping means for slidably storing the operating shaft means in the axial direction, and the operating shaft means received in the gripping means Pressing means for pressing toward the engaging portion side,
The operating shaft means includes an action portion having the engagement portion at the tip, a guided portion formed continuously at the rear end of the action portion, and a flange portion that partitions the action portion and the guided portion. An operating shaft, a first spring inserted into the guided portion and disposed on the flange portion, and a moving ring inserted into the guided portion and disposed on the first spring. Equipped,
The gripping means is provided with a cylindrical member having a guide hole for slidably receiving the operating shaft means in the axial direction and having a closed wall and an opening, and attached to the opening end of the cylindrical member. A cap having an insertion hole through which the action part is inserted;
The pressing means is slidably disposed in the guide hole of the cylindrical member, and is between the free end portion of the guided portion constituting the operating shaft of the operating shaft means and the blocking wall of the cylindrical member. An impact piston in which a free end portion of the guided portion is slidably entered and an open end side of the accommodation chamber is disposed in contact with the moving ring, the impact piston, A second spring disposed between the closed wall of the cylindrical member and having a spring constant greater than that of the first spring;
Stopper means for restricting the free end from entering the storage chamber of the impact piston is disposed at the free end of the guided portion constituting the operating shaft of the operating shaft means,
The guide hole of the cylindrical member has release means for releasing the restriction by the stopper means when the cylindrical member is moved by a predetermined amount relative to the operating shaft means against the spring force of the second spring. Provided,
A driver tool is provided.

  The guide hole provided in the cylindrical member constituting the gripping means has a polygonal cross section, the impact piston has a polygonal cross section, and the accommodating chamber has a polygonal cross section. The free end portion of the guided portion constituting the operating shaft of the operating shaft means has a polygonal cross section.

  Since the screwdriver tool according to the present invention is configured as described above, the engagement portion formed at the tip of the operation shaft constituting the operation shaft means is engaged with the engagement groove formed in the head of the male screw. When the gripping means is pushed downward, the second spring is compressed and the gripping means moves downward. When the cylindrical member constituting the gripping means moves relative to the operating shaft means by a predetermined amount against the spring force of the second spring, the restriction by the stopper means is released, and the impact piston is moved to the second spring. It is pushed down suddenly by the spring force. As a result, the free end portion of the guided portion constituting the operating shaft of the operating shaft means enters the storage chamber of the impact piston, and the head of the impact piston suddenly contacts the free end of the guided portion so that the operating shaft means Shock is applied to the operating shaft. By repeating this operation several times, the dust clogged in the engaging groove formed in the head of the male screw is removed, and when the engaging groove is crushed, it is regenerated.

1 is a cross-sectional view of a driver tool constructed in accordance with the present invention. FIG. 2 is an exploded perspective view showing the driver tool shown in FIG. FIG. 3 is an assembly diagram of an operating shaft means constituting the driver tool shown in FIGS. 1 and 2. Sectional drawing of the stopper which comprises the driver tool shown in FIG. 1 and FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG. Explanatory drawing of the operation | work which loosens a male screw using the driver tool shown in FIG. 1 and FIG.

Hereinafter, a preferred embodiment of a driver tool constructed according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a sectional view of a driver tool constructed according to the present invention, and FIG. 2 shows an exploded perspective view of the driver tool shown in FIG. FIG. 3 shows an assembly diagram of the operating shaft means constituting the driver tool shown in FIGS. 1 and 2.
The driver tool shown in FIGS. 1 and 2 includes an operating shaft means 2 having an engaging portion that engages with an engaging groove formed in the head of a male screw, and the operating shaft means 2 slides in the axial direction. A gripping means 4 that can be accommodated and a pressing means 6 that presses the operating shaft means 2 accommodated in the gripping means 4 toward the engaging portion side are provided.

  The operating shaft means 2 includes an operating shaft 21, a first spring 22, and a moving ring 23. The operating shaft 21 is formed in a columnar shape, and has a working portion 211 provided with an engaging portion 211a that engages with an engaging groove formed in a head of a male screw described later at a tip (lower end in FIGS. 1 and 2). The rectangular column-shaped guided portion 212 formed continuously from the rear end (the upper end in FIGS. 1 and 2) of the acting portion 211 and the disc-shaped collar portion that partitions the acting portion 211 and the guided portion 212 213. In addition, the stopper means 3 is arrange | positioned in the free end part (upper end part in FIG. 1 and FIG. 2) of the to-be-guided part 212 which comprises the operating shaft 21. FIG. The guided portion 212 is not limited to a quadrangular cross-sectional shape, and may be a polygonal cross-sectional shape. The stopper means 3 will be described with reference to FIG. The stopper means 3 shown in FIG. 4 is an inclined surface that is accommodated in a stopper accommodating chamber 121 that opens on one surface of the free end portion of the guided portion 212, and that the upper surface of the distal end portion is inclined downward toward the distal end (left end in the figure) A stopper 31 provided with 311, and a spring 32 disposed between the rear surface (right end surface in the drawing) of the stopper 31 and the wall surface of the stopper accommodating chamber 121 to press the stopper 31 in a direction protruding from the stopper accommodating chamber 121. It is made up of.

  1 and FIG. 2, the first spring 22 is a coil spring having a relatively small spring constant, and is inserted into the guided portion 212 and disposed on the flange portion 213. . The moving ring 23 includes a rectangular fitting insertion hole 231 through which the guided portion 212 is inserted. The moving ring 23 is fitted on the free end (upper end) of the guided portion 212 and disposed on the first spring 22. Yes. The operating shaft means 2 including the operating shaft 21, the first spring 22 and the moving ring 23 is assembled as shown in FIG. 3, and is configured such that the upper surface of the moving ring 23 is locked by a stopper 31. .

Next, the gripping means 4 that accommodates the above-described operating shaft means 2 will be described with reference to FIGS.
The gripping means 4 in the illustrated embodiment includes a cylindrical member 41 that accommodates the operating shaft means so as to be slidable in the axial direction, and a cap 42 that is attached to the lower end of the cylindrical member 41 in FIGS. 1 and 2. Yes. As shown in FIGS. 1 and 5, the cylindrical member 41 is formed with a guide hole 411 having a quadrangular cross section that opens at the lower end in the axial direction. A closed wall 411a is formed at the upper end of the cylindrical member 41 in FIG. Is formed. The guide hole 411 formed in the cylindrical member 41 is not limited to a quadrangular cross-sectional shape, and may be a polygonal cross-sectional shape. Further, the cylindrical member 41 is formed with a guide groove 411b that allows the stopper 31 to move in the lower half region in FIG. An inclined surface 411c that is inclined upward is provided at the upper end of the guide groove 411b.

  A male screw 412 is formed on the outer periphery of the lower end portion of the cylindrical member 41 configured as described above, and a cap 42 is screwed into the male screw 412. The cap 42 is provided with an insertion hole 421 through which the action portion 211 of the operating shaft 21 constituting the operating shaft means 2 is inserted. The insertion hole 421 has an inner diameter that is smaller than the diameter of the disk-shaped flange 213 provided in the operating shaft 21. Therefore, the cap 42 has a function as a stopper that restricts the downward movement of the operating shaft 21 in FIG.

Next, the pressing means 6 that presses the operating shaft means 2 accommodated in the gripping means 4 toward the engaging portion 211a will be described with reference to FIGS.
The pressing means 6 in the illustrated embodiment includes an impact piston 61 disposed between the operating shaft means 2 accommodated in the cylindrical member 41 of the gripping means 4 and the blocking wall 411 a of the cylindrical member 41, and the impact piston 61. And a second spring 62 disposed between the closed wall 411a. The impact piston 61 is formed in a quadrangular prism shape, and is slidably disposed in a guide hole 411 provided in the cylindrical member 41. The impact piston 61 is formed in a polygonal shape corresponding to the cross-sectional shape of the guide hole 411 formed in the cylindrical member 41 of the gripping means 4 and is slidably disposed in the guide hole 411. The impact piston 61 is formed with an accommodating chamber 611 having a quadrangular cross section opening at the lower end in FIG. 1 in the axial direction, and a guided portion constituting the operating shaft 21 of the operating shaft means 2 in the accommodating chamber 611. The free end portion (upper end portion) 212 is configured to be able to enter. Note that the cross-sectional shape of the storage chamber 611 is formed in a shape corresponding to the cross-sectional shape of the guided portion 212 that constitutes the operating shaft 21. The impact piston 61 configured in this way has an open end side on the moving ring 23 in a state where a part of a free end portion (upper end portion) of the guided portion 212 constituting the operating shaft 21 is fitted in the accommodation chamber 611. Arranged in contact. In addition, a notch recess 612 that allows the stopper 31 to advance and retreat is provided on one side wall of the impact piston 61 that forms the storage chamber 611.

  The second spring 62 disposed between the impact piston 61 configured in this way and the closing wall 411 a of the cylindrical member 41 constituting the gripping means 4 is a spring larger than the spring constant of the first spring 22. It is set to a constant. Accordingly, the second spring 62 presses the impact piston 61 and the operating shaft means 2 toward the engaging portion 211a (lower side in FIG. 1), and the flange portion 213 contacts the cap 42. Further, in the assembled state shown in FIG. 1, the stopper 31 of the stopper means 3 protrudes from the notch recess 612 to the guide groove 411b side, and restricts the downward movement of the impact piston 61 in FIG. Therefore, the stopper 31 of the stopper means 3 restricts the free end portion (upper end portion) of the guided portion 212 constituting the operating shaft 21 of the operating shaft means 2 from entering the accommodation chamber 611 of the impact piston 61. .

  The driver tool configured as described above has an impact piston 61 formed in a quadrangular prism shape (polygonal shape) in a guide hole 411 having a square cross section (polygonal shape) formed in the cylindrical member 41 constituting the gripping means 4. Are slidably fitted, and the impact piston 61 has a quadrangular (polygonal) cross section formed in the square (polygonal) containing chamber 611. Since the free end portion (upper end portion) of the guide portion 212 is slidably fitted, the operation shaft of the operation shaft means 2 is rotated by rotating the cylindrical member 41 constituting the grip means 4. Rotational torque can be transmitted to 21.

The driver tool in the illustrated embodiment is configured as described above, and the operation thereof will be described below with reference to FIG.
6 (a), (b), (c), and (d) show working states for loosening the male screw 12 that fastens the component 11 to the component 10. FIG. FIG. 6A shows an engaging portion 211a formed at the tip of the operating shaft 21 constituting the operating shaft means 2 of the driver tool described above in the engaging groove 122 formed in the head 121 of the male screw 12. The engaged state is shown. When the gripping means 4 is pushed downward from the state shown in FIG. 6 (a), the second spring 62 is compressed and the gripping means 4 moves downward, and the cylindrical member 41 is moved as shown in FIG. 6 (b). An inclined surface 411 c provided at the upper end of the guide groove 411 b formed in the bottom reaches the stopper 31. When the gripping means 4 moves further downward from the state shown in FIG. 6B, the stopper 31 moves back to the right in the drawing along the inclined surface 411c as shown in FIG. An inclined surface 311 formed on the top surface of the tip reaches the notch recess 612 of the impact piston 61. In this way, when the inclined surface 311 formed on the upper surface of the tip of the stopper 31 reaches the notch recess 612 of the impact piston 61, the inclined surface 311 is pushed by the edge of the notch recess 612. In the figure, it is further retracted to the right. Then, as shown in FIG. 6 (d), when the tip of the stopper 31 (the left end in the figure) moves into the stopper accommodating chamber 121, the stopper function of the impact piston 61 by the stopper 31 is released. The second spring 62 is suddenly pushed down by the spring force. Therefore, the inclined surface 411c provided at the upper end of the guide groove 411b and the inclined surface 311 formed on the top surface of the tip of the stopper 31 actuate the cylindrical member 41 against the spring force of the second spring 62 to actuate shaft means. 2 functions as a releasing means for releasing the restriction by the stopper 31 when it moves relative to the predetermined amount. At this time, the moving ring 23 in contact with the lower end of the impact piston 61 moves downward against the spring force of the first spring 22 having a spring constant smaller than that of the second spring 62. In this way, the impact piston 61 is suddenly pushed down by the spring force of the second spring 62. As a result, the free end portion (upper end portion) of the guided portion 212 constituting the operating shaft 21 of the operating shaft means 2 enters the storage chamber 611 of the impact piston 61, and the head of the impact piston 61 is in the guided portion 212. Abruptly contacting the free end (upper end), an impact is given to the operating shaft 21 of the operating shaft means 2.

  When the operation described above is repeated several times, the dust clogged in the engagement groove 122 formed in the head 121 of the male screw 12 is removed, and the engagement groove 122 is crushed. Played. Further, the male screw 12 is loosened with respect to the component 10. In this way, if the dust clogged in the engaging groove 122 formed in the head 121 of the male screw 12 is removed and the engaging groove 122 is regenerated, the operating shaft means 2 is inserted into the engaging groove 122. The male screw 12 can be loosened by rotating the gripping means 4 in a state where the engaging portion 211a formed at the tip of the operating shaft 21 constituting the engaging portion is engaged. As described above, if the dust clogged in the engagement groove 122 formed in the head 121 of the male screw 12 is removed and the engagement groove 122 is regenerated using the driver tool according to the present invention, You may implement the operation | work which loosens and removes the external thread 12 using the screw driver generally used.

2: Actuating shaft means 21: Acting shaft 211: Action portion 212: Guided portion 213: Gutter portion 22: First spring 3: Stopper means 4: Gripping means 41: Cylindrical member 411: Guide hole 42: Cap 6: Pressing Means 61: Impact piston 62: Second spring

Claims (2)

A driver tool having an engaging portion that engages with an engaging groove formed in a head of a male screw,
An operating shaft means having an engaging portion that engages with the engaging groove, a gripping means for slidably storing the operating shaft means in the axial direction, and the operating shaft means received in the gripping means Pressing means for pressing toward the engaging portion side,
The operating shaft means includes an action portion having the engagement portion at the tip, a guided portion formed continuously at the rear end of the action portion, and a flange portion that partitions the action portion and the guided portion. An operating shaft, a first spring inserted into the guided portion and disposed on the flange portion, and a moving ring inserted into the guided portion and disposed on the first spring. Equipped,
The gripping means is provided with a cylindrical member having a guide hole for slidably receiving the operating shaft means in the axial direction and having a closed wall and an opening, and attached to the opening end of the cylindrical member. A cap having an insertion hole through which the action part is inserted;
The pressing means is slidably disposed in the guide hole of the cylindrical member, and is between the free end portion of the guided portion constituting the operating shaft of the operating shaft means and the blocking wall of the cylindrical member. A pressure piston disposed at the open end of the storage chamber in contact with the moving ring, a pressure piston, and a pressure piston, A second spring disposed between the closed wall of the cylindrical member and having a spring constant greater than that of the first spring;
Stopper means for restricting the free end from entering the storage chamber of the pressing piston is disposed at the free end of the guided portion constituting the operating shaft of the operating shaft means,
A release means for releasing the restriction by the stopper means when the cylindrical member is moved by a predetermined amount relative to the operating shaft means against the spring force of the second spring;
Driver tool characterized by that.   The guide hole provided in the cylindrical member constituting the gripping means has a polygonal cross section, the pressing piston has a polygonal cross section, and the accommodating chamber has a polygonal cross section. The driver tool according to claim 1, wherein the free end portion of the guided portion constituting the operating shaft of the operating shaft means has a polygonal cross section.

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