KR20040028049A - Driver screw guider - Google Patents

Abstract

PURPOSE: A driver screw guide device is provided to improve the manufacturing cost and productivity through simplified structure and enable use as a usual driver by automatically withdrawing a movable case backward or manually backing the movable case completely. CONSTITUTION: A driver screw guide device comprises a driver(10) forming depressed clearance grooves(10a), and a movable case(20) forming elastic fitting projections to be loosely fitted into the depressed clearance grooves. The movable case moves forward and backward to the extent of the clearance of the depressed clearance grooves from the driver. The movable case magnetically supports the head of a screw by contact with the front-end portion of the movable case and the head of the screw. A magnet(30) is installed to the front-end portion of the movable case.

Description

Driver screw guide device

The present invention relates to a driver screw guide device, and more particularly, a screw screw is automatically made when holding the screw of the driver, the grip is firm, and when the screw is not required, the screw screw back to enable use in the standby state It relates to a guide device.

In general, a screwdriver is a tool for fastening and dismantling screws, and is one of the most widely used necessities in homes as well as construction sites, machines, and structural structures.

Such drivers generally include a flat head screwdriver and a Phillips screwdriver according to the types of screws that can be tightened, and there are a magnetic driver and a nonmagnetic driver according to whether the screw contact portion of the driver is magnetic.

In addition, in recent years, a flat-blade driver is formed on one side and a cross-head screwdriver on the other side has been developed and widely used. At the end, a magnetic screwdriver is mainly used to attach a magnetized bit to facilitate gripping of the screw.

However, such a conventional driver has a tip portion surrounding the head of the screw, which is completely fixed to the driver either integrally or adhesively, and makes it possible to attach the screw only by weak magnetic force, and is not applicable to existing drivers of other standards. Only the standard screw can be applied, so the function is impossible when the screw head is deep or shallow, and it is impossible to use when the magnet or the tip fixing the screw head is unnecessary, that is, when working through the narrow hole or gap. There was a problem.

In addition, the conventional driver has a problem that the magnet could not use the multi-iron action to move in the direction of the amount of iron components or contact area acting on the magnet.

An object of the present invention for solving the above problems is to improve the gripping force of the screw mechanically and mechanically, to improve the production cost and productivity with a simple structure, when working between narrow holes or gaps, Therefore, the present invention provides a driver screw guide device that enables the use of a conventional driver by retracting the movable cylinder back or manually manually moving the movable cylinder backward.

In addition, another object of the present invention is that the front and rear movement of the magnet is free of space, and the tip of the driver is exposed in the backward state by using the property of moving the magnet in the direction of the amount of iron content or contact area acting on the magnet. In the case of holding the screw, it provides a driver screw guide device that automatically moves the magnet while adhering the screw to a magnetic force and mechanical strength firmly at any size or head depth so that the screw does not fall.

1 is a cross-sectional view showing a screw driver guide device according to an embodiment of the present invention.

2 is a cross-sectional view showing a screw gripping state of FIG.

It is sectional drawing which shows the movable cylinder standby state of FIG.

4 is a cross-sectional view showing a screw driver guide device according to another embodiment of the present invention.

5 is a cross-sectional view showing a screw driver guide device according to another embodiment of the present invention.

6 is a cross-sectional view showing a screw driver guide device according to another embodiment of the present invention.

7 is a cross-sectional view showing a screw driver guide device according to another embodiment of the present invention.

8 is a cross-sectional view showing a screw driver guide device according to another embodiment of the present invention.

9 is a cross-sectional view showing a screw driver guide device according to another embodiment of the present invention.

10 is a cross-sectional view showing a screw driver guide device according to another embodiment of the present invention.

Driver screw guide device of the present invention for achieving the above object, the driver screw guide device, comprising: a driver is formed hemispherical clearance recessed in the side; And a spring ball that is loosely engaged in the clearance groove formed in the driver, is installed to be able to move back and forth a predetermined distance by the clearance of the clearance groove based on the driver, and the front end of the magnet is in contact with the screw head to magnetically press the screw head. And a movable cylinder for supporting.

In addition, a magnet or a magnetized screw head stopper is detachably or fixedly installed at the distal end of the movable cylinder, and the magnet or magnetized screw head stopper uses a multi-ferrous action that moves in a direction in which a large amount of iron component or contact area acts on the magnet. Usually, the movable cylinder is magnetically attached in the direction of the driver with a large amount of iron, but when the screw approaches the driver's tip, the movable cylinder is not restrained by the restoring force of the spring ball so as to move in the direction of the screw with a large contact area with the iron. It is desirable to be loosely installed so that forward and backward movement is free as much as the clearance of the clearance groove.

In addition, the magnet is made of a ring-shaped, cylindrical and a plurality of circular or polyhedral pieces, the clearance of the driver, the first clearance formed in the front of the driver to maintain the forward position of the movable cylinder; And a second clearance formed in the rear of the driver so as to maintain the standby state by reversing the movable cylinder beyond the restoring force of the spring ball when the movable cylinder is not in use.

In addition, the driver may be manufactured in a bit shape that can be switched and used to be connected to the electric driver, or the driver may include a driver bit that can be replaced and used to be connected to the bit holder; And a bit holder detachably connected to the driver bit and having the free groove formed therein.

Hereinafter, a screw driver guide device according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in Figure 1, the driver screw guide device according to an embodiment of the present invention, as a screwdriver screw guide device to secure the grip of the screw so that the screw does not fall, largely the driver 10 and the movable cylinder It consists of 20.

That is, the driver 10 is formed as a hemispherical clearance 10a recessed in the side, it is possible to configure only with one first clearance 11, preferably the clearance of the driver 10 10a consists of the 1st clearance groove 11 and the 2nd clearance groove 12. As shown in FIG.

Here, the first clearance groove 11 is formed in front of the driver 10 so that the fine forward and backward positions of the movable cylinder 20 is maintained, the second clearance groove 12 is the movable When the cylinder 20 is not in use, the movable cylinder 20 is retracted beyond the restoring force of the spring ball 21 so that the standby state can be maintained and formed at the rear of the driver 10 so that it can be used like a conventional driver. Will be.

The driver 10 is formed in a cylindrical shape to freely move forward and backward of the movable cylinder 20 from the tip to the first clearance groove 11 and reduce the thickness, and the first clearance groove 11 to the second. The clearance groove 12 is preferably manufactured in a hexagonal column shape or a circular column shape as the shape of the existing driver.

Here, the clearance groove (10a), the inner diameter radius is relatively wider than the ball 211 of the spring ball 21 to loosen the engagement of the spring ball 21 in the clearance groove (10a) to the movable cylinder 20 It is desirable to freely limit the fine forward and backward movements of the c).

That is, the movable cylinder 20, the spring ball 21 is loosely engaged in the clearance groove (10a) formed in the driver 10 is installed, the play of the clearance groove (10a) relative to the driver 10. It is installed to be able to move back and forth a predetermined distance, and the front end portion in which the magnet 30 is installed is in contact with the screw head to support the screw head magnetically and mechanically.

Here, in order to fix the magnet 30 to the movable cylinder 20, a magnet holder 31 connecting the movable cylinder 20 and the magnet 30 may be installed, and the movable cylinder 20 An inner diameter may be provided with a guide member 32 for guiding the driver 10 so that the magnet 30 does not rub against the driver 10, the spring ball 21, the clearance groove (10a) A ball 211 to be engaged and a ball groove into which the ball 211 is inserted may be formed, and the spring plate 212 may apply a restoring force to the ball 211.

Here, various spring spring 213 of FIG. 4 in place of the spring plate 212 or, although not shown, may be applied to form a rubber ring to press the ball or to form an elastic protrusion to have elasticity. Any elastic member that can be applied.

The magnet fixing method and the structure for the spring ball are known and widely commercialized, and are easily modified and changed by those skilled in the art.

Therefore, the magnet 30 or the magnetized screw head stopper is detachably or fixedly installed at the distal end of the movable cylinder 20 so that the magnet 30 or the magnetized screw head stopper acts on the magnet. As shown in FIG. 1, the movable cylinder 20 is usually moved backward in the direction of the driver 10 having a large amount of iron and attached by magnetic force, as shown in FIG. 1. As shown in the drawing, when the screw 1 approaches the tip of the driver 10, the movable cylinder 20 moves forward and attaches in the direction of the screw 1 having a large amount of iron and a contact area. 20) should be loosely installed so that forward and backward movement is free as much as the clearance of the first clearance groove 11 without being restrained by the restoring force of the spring ball 21. At this time, when the fastening of the screw is finished, the movable cylinder 20 is separated by the spring ball 21 is controlled.

This, the magnet 30 may be made of a ring-shaped, cylindrical and a plurality of circular or polyhedral pieces.

In addition, as shown in Fig. 1 and 2, the first clearance formed in the front of the driver 10 of the spring ball 21 of the movable cylinder 20 so that the forward position of the movable cylinder 20 is maintained. 3, the user loosens the groove 11, and as shown in FIG. 3, when the user does not use the movable cylinder 20, the user reverses the movable cylinder 20 by a force greater than or equal to the restoring force of the spring ball 21. When the spring ball 21 of the movable cylinder 20 is loosely caught by the second clearance 12, the standby state can be maintained as it is, and it can be used like a conventional driver.

On the other hand, as shown in Figure 4, the driver 10 is made in the shape of a two-way bit 40 that can be used to switch back and forth so as to be connected to the electric driver 2, the play of the first clearance groove (11). It may be applied to the electric screwdriver (2) to prevent the screw from entering more than a certain depth while performing the multi-ferrous action, as shown in Figure 5, it is possible to use a replacement to be connected to the bit holder (3) (4) A cross includes a driver bit 50 and a bit holder (4) detachably connected to the driver bit (50), the first holder (11) and the second holder (12) are formed. It is also possible to replace and use the driver bit 50 of various specifications such as the date, large, small.

At this time, it is possible to install the magnet 30 inside the bit holder 4 to fix the bit 50 and the bit holder 3, 4 by magnetic force.

In addition, as shown in FIG. 6, a separate connecting cylinder 6 is formed between the existing bits 100 and the driver 5 so that the existing bits 100 can be used as they are, and the connection It is also possible to form the first clearance groove 11 and the second clearance groove 12 in the cylinder 6.

Therefore, since the existing bits 100 of various shapes can be used as they are, the compatibility can be greatly improved since there is no need to purchase a separate bit.

In addition, as shown in FIG. 7, a spring is formed in the bit 60 in which the first clearance groove 11 is formed so as to be used as a dry wall that can be screwed to a predetermined depth from the target surface. The bit holder 70 which can use the movable cylinder 20 in which the ball 21 was formed can also be provided.

In addition, as shown in FIG. 8, the present invention is not necessarily formed with a spring ball in the movable cylinder 20, but a locking projection having elasticity in the inner diameter of the movable cylinder 20 so as to act as a spring ball. 80 is formed in a shape corresponding to the first clearance groove 11 and the second clearance groove 12, it is also possible to finely move forward and backward and grip the screw.

In addition, as shown in Fig. 9, the two-way bit 40 can be switched back and forth by making a two-way bit 40 that can be used by being coupled to the electric driver 2 in the bit.

On the other hand, the clearance groove 10a of the present invention, as shown in Figure 10, not only the shape of the hemispherical recessed groove is allowed, it is also possible to be manufactured in the form of the neck 90 is reduced in diameter, The shape of the spring ball is not necessarily allowed only the ball shape, but may be applied to the various types of locking projections 80 to enable the fine forward and backward movement by being caught by the neck (90).

Such, the type and shape of the driver, the shape of the locking projection (spring ball), the shape of the bit and the shape of the clearance groove, and the like are modified by those skilled in the art within the scope without departing from the technical spirit of the present invention. And changes are possible.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

For example, in the embodiment of the present invention is limited to a screwdriver guide device applied to a Phillips screwdriver, but not necessarily a Phillips screwdriver, but may be applied to a flathead screwdriver, spanner, wrench or drill nib.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and the technical spirit thereof.

As described above, according to the driver screw guide device of the present invention, the gripping force of the screw can be improved, the manufacturing cost and productivity can be improved with a simple structure, and the movable cylinder is automatically opened when the work is carried out between narrow holes or gaps. It is possible to use it like a conventional screwdriver by retreating backwards or manually moving the movable cylinder backwards completely, and by using the property that the magnet moves in a direction with a large amount of iron or contact area acting on the magnet due to the free space forward and backward. In general, when the tip of the driver is exposed while being retracted and the screw is gripped, the magnet automatically moves forward and the screw is completely firmly attached to the screw at any size or head depth, thereby preventing the screw from falling over.

Claims (6)

In configuring the driver screw guide device, A driver having a recess recessed in a side surface thereof; And An elastic locking projection (spring ball, etc.) loosely engaged in the clearance groove formed in the driver is installed, and installed to allow the driver to move back and forth a predetermined distance by the clearance of the clearance groove based on the driver. A movable cylinder which comes into contact with the magnetic head to support the screw head; Driver screw guide device, characterized in that comprises a. The method of claim 1, A magnet or a magnetized screw head stopper is detachably or fixedly installed at the distal end of the movable cylinder, and the magnet or magnetized screw head stopper is normally used by using a ferrous action that moves in a direction in which a large amount of iron component or contact area acts on the magnet. The magnetic cylinder is magnetically attached in the direction of the driver with a lot of iron, and when the screw approaches the driver's tip, the movable cylinder is attached to the restoring force of the locking projection (spring ball) so that the iron component and the contact area move and attach in the direction of the screw with the large amount of contact area. Driver screw guide device, characterized in that loosely installed so as to freely move forward and backward as much as the clearance of the free groove without being constrained. The method of claim 1, The magnet is made of a ring-shaped, cylindrical and a plurality of circular or polyhedral pieces, the screw driver, characterized in that the guide member for guiding the driver so that the magnet does not rub against the driver in the movable cylinder or the inner diameter of the magnet Guide device. The method of claim 1, The clearance groove of the driver, A first clearance groove formed in front of the driver to maintain a fine forward and backward position of the movable cylinder; And A second clearance formed in the rear of the driver so as to maintain the standby state by reversing the movable cylinder above the restoring force of the spring ball when the movable cylinder is not in use; Driver screw guide device, characterized in that comprises a. The method of claim 4, wherein The driver is a screw driver guide device, characterized in that the production from the tip of the driver to the first clearance groove in a cylindrical shape, a two-way bit shape that can be used to switch so as to be connected to the electric driver. The method of claim 1, The driver includes: a driver bit replaceable to be connected to the bit holder; And A bit holder detachably connected to the driver bit and having the free groove formed therein; Driver screw guide device, characterized in that comprises a.