JP2004042237A - Machine screw connecting driver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate even work in a narrow place by allowing the connection to a machine screw, and allowing operation with one hand when inserting a driver into the machine screw though practically rotating the driver with the other hand after picking and holding the machine screw in an installing position with one hand when fastening a nonmagnetic cross machine screw (having a property of being unattractable by a magnet), and picking and removing the machine screw with the other hand after being loosened up to time just before removal when removing the machine screw. <P>SOLUTION: A slit is formed (only in one direction) toward the root from the tip vicinity in a groove from a tip groove of a cross driver shaft, and a metallic plate a little thinner than a groove width of the slip is inserted, and a side part of the metallic plate tip is projected a little from a groove part of the driver. A projected metallic plate is set in a position for striking on a corresponding part projecting inside a cross groove of the machine screw. When inserting the driver into the screw, the side part on the tip of the metallic plate is strongly strutted against the projecting part of the machine screw, so that a driver shaft and the machine screw are connected. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a screw connect driver.
[0002]
[Prior art]
Previously, many iron screws could be held with a screwdriver with a magnet, but in recent years stainless steel screws, which have increased in proportion, cannot be attracted with a magnet. It can also be used for non-magnetic screws such as stainless steel, as well as a screwdriver that holds a large number of plastic claws wrapping around the head of the screw, and three holes that divide the outer circumference of the cylinder evenly, and Insert the bearing and squeeze it with a rubber ring from the outside. When a screw is inserted into the cylinder, there is a driver who passes the head of the screw and attaches the base. In both cases, the screw could not be screwed into the material obliquely, and the diameter was quite large, so that it could not be used in a narrow place.
[0003]
[Problems to be solved by the invention]
Do not increase the size of the driver shaft (near the tip or the diameter of accessories) so that it can hold non-magnetic screws, including stainless steel.
[0004]
[Means for Solving the Problems]
(B) Insert a slit from the groove at the tip of the cross driver shaft into the groove from near the tip toward the root. (Only in one direction) The shape of the uncut part at the tip side is cut so that the central part is mountain-shaped and there are horizontal skirts on both sides.
[0005]
Two thin metal plates are inserted into this slit in a superimposed manner (by making the total thickness of the two plates slightly smaller than the width of the slit, a gap is created, so that when an external force is applied to the edge of the metal plate, it slides. ) Near the driver tip, protrude a part of each side of the tip of the metal plate in the opposite direction.
[0006]
The tip of the protruding metal plate on the driver tip side is cut at an angle or round so that it can be smoothly inserted into the screw groove. A screw / connect driver that holds two parts of the part far from the tip of the metal plate with multiple pins.
[0007]
When the width is reduced so that the core side of the middle part between the two metal plates (b) and (a) is narrowed, a portion where the two plates do not overlap is formed. Insert a pin with a circular or elliptical shape, or a square or polygonal shape into this gap. Or a screw / connect driver molded integrally with the driver with the same cross section as the pin.
[0008]
(C) Insert a slit from the groove at the tip of the cross driver into the groove from near the tip toward the root (only in one direction) and insert one slightly thin metal plate. This metal plate is divided into two legs from the base, and the screw connect driver is mounted at a position where the side parts at the tip of the two legs slightly protrude from the groove of the driver shaft.
[0009]
(D), (c) slightly increase the gap near the base between the two feet, and insert a pin with a circular, elliptical, square, or polygonal cross section into this gap, or Screw / connect driver molded integrally with the driver with the same cross section as the pin.
[0010]
Drill a hole at right angles to the slit near the tip of the screwdriver, and prepare a metal tube with the same length as the slit width and the same inner diameter as this hole. A hole which is one size larger than this metal tube corresponding to this hole is also made in the metal plate. After inserting the metal tube into the slits while inserting the metal tube into the holes of the two metal plates, the metal tube is positioned at the position corresponding to the hole of the driver shaft, and the pin is inserted. When one side of this hole hits the metal tube, it can be stopped at a certain position so that the protruding portion on the side of the front end of the metal plate does not excessively protrude. When the screwdriver is inserted into the screw, the hole does not hit the metal tube even if the protruding part slides inward when the screwdriver is inserted into the screw. The pin and the driver shaft are fixed by welding or the like.
[0011]
Insert a slit from the groove at the tip of the cross driver shaft into the groove from the tip to the root. (Only in one direction) Insert two thin metal plates in a pile (thickness of the two plates should be slightly thinner than the groove width of the slit). Attach it at the protruding position. The base of the metal plate is fixed with a plurality of rivets or the like. Drill a hole at right angles to the slit near the tip of the screwdriver to make a pin with a slightly thinner cylinder attached to both sides of the cylinder. The length of the middle cylinder is the same as the width of the slit. Drill a hole on the metal plate that is one size larger than this pin (center column). With the pin inserted in the hole of the metal plate, open both sides of this pin into the hole of the driver shaft while opening the slit portion of the driver shaft. When one side of the hole of the metal plate hits the pin, it can be stopped at a fixed position so that the protruding portion on the side of the front end of the metal plate does not excessively protrude. Because the hole is shifted to the outside of the driver shaft, when the screwdriver is inserted into the screw, it is pushed by the groove of the screw and the hole does not hit the pin even if the protruding part slides inward . The pin and the driver shaft are fixed by welding or the like.
[0012]
It is also possible to insert several arc-shaped slits in the vertical direction of the metal plate.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
When the screwdriver is inserted into the screw, the metal plate stretches in two directions and hits the opposing parts (one of two sets) protruding inside the cross groove of the screw, so that the screw can be connected.
[0014]
The distance between the tips of the metal plates extending in two directions is larger than the distance of the opposing portion protruding inside the cross groove of the screw, so that when the metal plate is inserted, the metal plate retracts slightly inward. The one formed in one piece with the driver with a cross section similar to that of the pin, located in the middle of the two metal plates, can withstand a strong torque (final tightening or the like) when rotating the driver.
[0015]
This type is mounted in a slightly deformed state (in a state where stress is applied) by applying a force to the tip of the metal plate (the part in contact with the screw).
[0016]
【The invention's effect】
The screws can be connected (connected) regardless of the presence or absence of the magnetism of the screws, narrow or wide space around the screws, and regardless of the direction in which the screws are used (downward, sideways, upward, etc.). When a screw is inserted into the driver, a slight shock can grip the screw so that it does not come off the driver, so the driver's tip does not come off even if it turns upward, downward, or sideways, so it can be connected as one.
[0017]
After tightening the screw, pull it out easily. The shape of the uncut portion at the tip side of the slit is cut so that the central portion is mountain-shaped and there are horizontal skirts on both sides.
The reason for this shape is that the slit is inserted very close to the tip, so that only a small cross section remains on the tip of the shaft and the strength is reduced.
[0018]
In many cases, oil is also attached to the groove of the cross part, but as with the "wedge" driven into the hammer's head, even if there is almost no frictional force, the connection force can be sufficiently maintained.
[0019]
Since the metal plate is very thin, it may be deformed or damaged if it shifts in the rotation direction while hitting the wall surface of the screw groove, but at the time of rotation, the driver shaft bites into the screw groove The displacement in the rotation direction is almost impossible.
[0020]
Also, if the corners of the end portions of the metal plate are cut obliquely or in a round shape, the edges of the grooves (valleys) only slightly protrude, so that there is very little risk of injury due to touch with a fingertip or the like.
[0021]
In addition, when attracting iron screws with a magnet driver, the coupling force is weak, and the magnetic force also works on the screw tip, and it is not rare that it falls down, but this driver has a much stronger coupling force. If it is used for iron screws, if it is used as an iron screw, the magnetic force (this driver also has a magnet) and the coupling force of this mechanism will be added, and if the screw can never be dropped (such as working at heights) Particularly suitable.
[0022]
For example, if the base of the drill is only loosely embedded in the handle of the drill, pull the handle against the material and pull the handle off the shaft, leaving the drill Similar to Conversely, when loosening the screw, loosen it until it is completely removed from the thread of the material, and then pull the screwdriver to remove the screw while it is still connected to the screwdriver.
[0023]
In addition, the type formed integrally with the driver with a cross section similar to the pin inserted in the middle part of the two metal plates, the side portion at the tip of the metal plate protrudes inside the cross groove of the screw, the wall of the opposing portion A strong repulsive force is obtained from the “start of hit”. In addition, since it has the effect of reinforcing the weakened portion due to the slit, it can withstand a strong torque (such as final tightening) when rotating the driver.
[0024]
In addition, the metal plate tip may be slightly displaced in the direction of the driver's core due to metal fatigue caused many times. Since the collision occurs while the stress is applied, even if a force deviating in the core direction acts on the front end side of the metal plate, it can be absorbed.
[0025]
In the type where the reinforcing pin is inserted near the tip of the driver shaft, the tip of the metal plate hits the pin under stress, so when the driver is inserted into the screw groove, the screw groove Strong elasticity is obtained from the beginning of pressing the metal plate. By fixing the pin and the driver shaft by welding or the like, the strength near the tip of the driver shaft increases.
[0026]
In the type with several arc-shaped slits inserted in the vertical direction of the metal plate, the repulsion force is small, but when the metal plate is pressed, the metal plate is deformed so as to hit a wave (external force The ratio can be reduced because the width at right angles is small).
[Brief description of the drawings]
FIG. 1 is a plan view of a tip portion of a shaft of a cross driver.
FIG. 2 is a plan view in which a slit is formed in a tip portion of a shaft of the cross driver.
FIG. 3 is a sectional view of a slit portion at a tip of a shaft of a cross driver.
FIG. 4 is a cross-sectional view in which opposing portions protruding inside a cross groove of a screw are vertically divided.
FIG. 5 is a plan view of each of two metal plates inserted in a slit portion at a tip of a shaft of a cross driver in a state of being overlapped.
FIG. 6 is a plan view of each of two metal plates that are inserted in a stack after inserting a pillar-shaped pin or the like in the middle of the slit portion at the tip of the shaft of the cross driver.
FIG. 7 is a plan view of one metal plate inserted into a slit portion at a tip of a shaft of a cross driver.
FIG. 8 is a plan view of one metal plate inserted after inserting a pillar-shaped pin or the like in the middle of a slit portion at the tip of the shaft of the cross driver.
FIG. 9 is a view in which a reinforcing pin is inserted near a tip of a shaft of a cross driver, and a slit is cut off near the tip. FIG. 3 is a plan view of a metal plate, in which a metal plate is cut in the longitudinal direction (slit) and two sheets are inserted into a slit portion of a driver shaft, and a perspective view of a pin and a metal tube (sleeve).
FIG. 10 shows a plan view of a metal plate to be inserted near the tip of the cross driver shaft near the tip of the shaft of the cross driver, cutting off the slit to the tip, and inserting two sheets into the slit part with the pins (pins with small diameters on both sides of the pin). FIG.

Claims (6)

Insert the slit from the groove at the tip of the cross driver shaft into the groove from near the tip to the root (only in one direction), the shape of the uncut part at the tip side, the central part is mountain-shaped, both sides are horizontal bases Cut as there is. Two thin metal plates are inserted one on top of the other, and the two side plates are mounted so that the sides of the two ends protrude slightly from the groove of the driver in the opposite direction. A screw-connect driver that holds a screw by inserting a screwdriver into a screw and a metal plate stretches in two directions. The width in the middle between the root and the tip of the two metal plates according to claim 1 is set to a size that allows a gap between the two stacked metal plates. A screw / connect driver in which a pin with a circular, elliptical, square, or polygonal cross section is inserted into this non-overlapping gap, or is formed integrally with the driver shaft with a cross section similar to the pin. Insert a slit from the groove at the tip of the cross driver shaft into the groove from near the tip to the root (only in one direction), and insert one slightly thin metal plate. This metal plate is divided into two legs from the base, and becomes thinner toward the tip, and there is a gap between the two legs from the base to the tip. Attach it so that the side parts at the tip of the two feet slightly protrude from the groove of the driver shaft outward from the center. A screw connect driver that connects the screw by inserting the screwdriver into the screw and the metal plate stretches in two directions. A pin having a cross section of a circle, an ellipse, a quadrangle, or a polygon is inserted into the center part of the middle of the two legs according to claim 3, or the pin is formed integrally with the driver shaft with a cross section similar to the pin. Screw connect driver. Insert a slit from the groove at the tip of the cross driver shaft into the groove from near the tip toward the root (only in one direction), leaving the tip side uncut. The shape of the uncut portion is processed to be straight or mountain-shaped. Several arc-shaped slits are provided in the vertical direction of the metal plate so that the metal plate can be deformed flexibly. Two metal plates are inserted one on top of the other, and the two side plates are mounted in such a manner that the side ends of the two plates slightly protrude from the groove of the driver in the opposite direction. The base of the metal plate is fixed with a plurality of rivets or the like. A hole is made near the tip of the screwdriver in a direction perpendicular to the slit. A metal tube (sleeve) with the same length as the slit width and the same inside diameter as the hole is inserted into the slit so that the pin can be inserted. In the metal plate, make a hole corresponding to this hole and one size larger than this metal tube. When one side of this hole hits the metal tube, it can be stopped at a certain position so that the protruding portion on the side of the front end of the metal plate does not excessively protrude. Since the hole is shifted to the outside of the driver shaft, when the screwdriver is inserted into the screw, it is pushed by the groove of the screw, and even if the protruding part slides inward, the hole will not hit the metal tube. Absent. The pin and the driver shaft are fixed by welding or the like. A screw-connect driver that holds a screw by inserting a screwdriver into a screw and a metal plate stretches in two directions. Insert a slit from the tip of the cross driver shaft into the groove from the tip to the root (cut off to the tip) (only in one direction) Insert two thin metal plates on top of each other and insert the two metal sheets in opposite directions At the position protruding from the groove of the screwdriver. The base of the metal plate is fixed with a plurality of rivets or the like. Drill a hole in the direction perpendicular to the slit near the tip of the screwdriver, and prepare a pin with a slightly thinner cylinder attached to both sides of the cylinder. The length of the middle cylinder is the same as the width of the slit. Drill a hole on the metal plate that is one size larger than this pin (center column). With the pin inserted in the hole of the metal plate, open both sides of this pin into the hole of the driver shaft while opening the slit portion of the driver shaft. When one side of the hole of the metal plate hits the pin, it can be stopped at a fixed position so that the protruding portion on the side of the front end of the metal plate does not excessively protrude. Since the hole is shifted to the outside of the driver shaft, when the screwdriver is inserted into the screw, it is pushed by the groove of the screw and the hole does not hit the pin even if the protruding part slides inward . The pin and the driver shaft are fixed by welding or the like. A screw-connect driver that holds the screw by inserting a screwdriver into the screw and the metal plate stretches in two directions.

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