KR102673373B1 - Multi-purpose screw holder for electric driver - Google Patents

Abstract

The disclosed content is a driver shaft that is normally used as a dust collector to accommodate cutting chips and dust separated from the base material when screwing to the base material, and is rotatably driven with a screw holder detachably coupled to the front end when necessary. As the circumference of the screw is gripped so that the screw is aligned on the same line, the screw can be stably fixed to the base material without being thrown out, increasing convenience of use and satisfying the various needs of users. It's about.
A multi-purpose cover for an electric screwdriver according to an embodiment of the disclosed content includes a coupling ring coupled to the front side of the electric screwdriver, a rear end connected to the coupling ring and extending forward, and a dust collector surrounding the driver shaft of the electric screwdriver. , a base material contact ring connected to the front end of the dust collector, and a screw holder that is detachably coupled to the base material contact ring and is provided at the center with a plurality of screw support protrusions that surround and support the circumference of the screw.

Description

Multipurpose cover for electric screwdriver {MULTI-PURPOSE SCREW HOLDER FOR ELECTRIC DRIVER}

The disclosed content relates to a screw holder for an electric driver that is coupled to the front side of the electric screwdriver and surrounds and supports the circumference of the screw.

Unless otherwise indicated herein, the material described in this section is not prior art to the claims of this application, and is not admitted to be prior art by inclusion in this section.

In general, a screw includes a screw shaft portion formed with a thread and a screw head portion formed with a cross (+) or straight (-) groove.

In addition, the electric driver for fixing the screw to the base material by rotating the screw has an electric driver body with a built-in electric motor, etc., and the end that protrudes forward of the electric driver body is engaged with the groove of the screw head and is rotated by the electric motor. It includes a driver shaft that automatically rotates the screw.

Therefore, in order to fix the screw to the base material, an electric driver is often used. When the driver shaft is rotated while the end of the driver shaft is coupled to the groove of the screw head, the screw rotates and is inserted and fixed into the base material.

To fix the base material of the screw, the operator holds the handle of the electric screwdriver body with one hand and holds the screw with the other hand, inserts the end of the driver shaft into the groove of the screw head, and inserts the front end of the screw into the base material. After attaching it to a specific position, the electric driver body is operated to rotate the driver shaft and at the same time apply force in the vertical direction of the base material.

At this time, since the area where the groove of the screw head and the protruding end of the driver shaft are in contact with each other are relatively small, if the alignment of the screw is misaligned or the direction of applying force through the electric screwdriver body is even slightly different, the screw will bounce out, making it difficult to fix the screw to the base material. Not only is there a problem, but there is also the problem of workers being injured due to screws flying out or the driver shaft of an electric screwdriver, and especially if the place where the screw base material is fixed is at a high place, they have to leave the work area to pick up the screws that have bounced off and fallen to the floor. There was a problem of hassle.

As an example of a solution to this problem, a screw holder that is attached to the front side of an electric driver and stably surrounds and supports the circumference of the screw is widely used.

As an example of such a screw holder, Korean Patent Publication No. 10-2011-0058197 (published on June 1, 2011) includes a cylindrical body with one end open and a driver insertion hole formed at the other end, and a cylindrical body arranged in a circle from the opening of the body. A screw holder is disclosed that includes a plurality of elastic bands and a support protrusion that protrudes toward the center inside the distal end of the elastic band and surrounds the shaft portion of the inserted screw.

In addition, Republic of Korea Patent Publication No. 10-2020-0053124 (published on May 18, 2020) includes a main body with a motor mounted inside and a handle integrally formed at the bottom, a drill chuck installed in conjunction with the motor, and various shapes of the drill chuck. In the electric drill to which the bit is fixed, a connecting ring installed and fixed to the front outer periphery of the main body; a fixed housing whose rear end is coupled to the outer periphery of the connecting ring, where a predetermined space is formed so that the drill chuck and bit can be inserted therein, and where the front end is penetrated to a predetermined diameter to form a support jaw; It is inserted into the interior of the fixing housing so that the front end protrudes by a certain length, and a locking protrusion is formed at the rear to prevent it from being caught by the supporting protrusion, and a through hole of a predetermined diameter is formed at the front to allow the bit to pass through, and the through hole is formed at the front. A coupling groove of a predetermined depth is formed vertically on the outer periphery of the ball, an axial hole is formed horizontally through the coupling groove, a bending groove is formed at a predetermined depth on the front outer periphery of the coupling groove, and the bending groove A floating housing with a guide portion integrally protruding forward; a spring that is inserted into the fixed housing and supports the movable housing to move forward and backward within the fixed housing by its elasticity; The rear, which has an axial hole formed in the same manner as the axial hole of the movable housing, is inserted into the upper and lower parts of the coupling groove, and the axial holes are aligned and rotatably coupled to each other by a separately provided pin shaft, and a screw is inserted and positioned between them. A pair of mouthpieces; and a ring-shaped bending spring that is coupled to the bending groove of the movable housing and supports the pair of mouthpieces by its own elasticity to prevent the screw from shaking. A jig for an electric drill having a screw fixing and shaking prevention function is disclosed. .

In the case of the conventional screw holder for an electric driver as described above, there was a problem in that it was difficult to use for purposes other than stably surrounding and supporting the screw so that the rotationally driven driver shaft and the screw were aligned on the same line.

Republic of Korea Patent Publication No. 10-2011-0058197 (published on June 1, 2011) Republic of Korea Patent Publication No. 10-2020-0053124 (published on May 18, 2020)

Normally, it is used as a dust collector to contain cutting chips and dust separated from the base material when fixing the screw to the base material, but when necessary, a screw holder is detachably attached to the front end, and the screw is aligned with the driver shaft that is rotated. As the circumference of the screw is gripped so that it is aligned on the surface, the screw can be stably fixed to the base material without being thrown out, thereby increasing convenience of use and providing a multi-purpose cover for an electric screwdriver that can meet a variety of user needs. .

In addition, it is not limited to the technical challenges described above, and it is obvious that other technical challenges may be derived from the description below.

The disclosed content includes a coupling ring coupled to the front side of an electric driver, a dust catcher whose rear end is connected to the coupling ring and extends forward and surrounds the driver shaft of the electric driver, and a base material connected to the front end of the dust catcher. A multipurpose cover for an electric screwdriver including a face ring and a screw holder that is detachably coupled to the base material face ring and is provided at the center with a plurality of screw support protrusions that surround and support the circumference of the screw is presented as an embodiment.

According to a preferred feature of the disclosed content, the dust catcher may be formed of a transparent or translucent cylindrical bellows capable of multi-stage folding and internal transparency.

According to a preferred feature of the disclosed content, an elastic coil spring may be built into the dust catcher.

According to a preferred feature of the disclosed content, a plurality of coupling grooves are formed at regular angular intervals in the base material face ring, and a plurality of coupling protrusions that are simultaneously detachably coupled to the plurality of coupling grooves correspond to the coupling grooves in the screw holder. It can be very protruding.

According to a preferred feature of the disclosed content, the screw holder can be detachably coupled to the base material face ring by a fastening screw or a magnet.

According to the multi-purpose cover for an electric driver as described above, the rear end is normally coupled to the front side of the electric driver, and the front end is spaced apart from the circumference of the screw and faces the base material, so that when fixing the screw to the base material, it is separated from the base material. It is used as a dust collector to accommodate separated cutting chips and dust, and when necessary, a screw holder is attached to the front end so that the rotationally driven driver shaft and the screw are aligned on the same line. As the circumference of the screw is gripped, the screw bounces. It has the advantage of increasing convenience of use as it can be stably fixed to the base material without going out, and at the same time satisfying various user needs.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a multi-purpose cover for an electric screwdriver according to an embodiment of the disclosed content.
Figure 2 is an exploded perspective view of a multi-purpose cover for an electric screwdriver according to an embodiment of the disclosed content.
Figures 3 and 4 are cross-sectional views of the multi-purpose cover for an electric screwdriver in use according to an embodiment of the disclosed content.

Hereinafter, the configuration and effects of the preferred embodiment will be examined with reference to the attached drawings. For reference, in the drawings below, each component is omitted or schematically shown for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals refer to the same components throughout the specification, and reference numerals for the same components in individual drawings will be omitted.

The multi-purpose cover 1 for an electric screwdriver according to an embodiment of the disclosed content is normally used as a dust collector to contain cutting chips and dust separated from the base material when fixing a screw to the base material, and is used to grip the circumference of the screw when necessary. To enable screw alignment, as shown in FIGS. 1 to 4, there is a coupling ring 10 coupled to the front side 2a of the electric driver 2, and a rear end of the coupling ring 10. A dust collector (20) that is connected and extends forward and surrounds the driver shaft of the electric driver (2), a base material contact ring (30) connected to the front end of the dust receiver (20), and a base material contact ring (30). It includes a screw holder 40 that can be coupled and is provided at the center with a plurality of screw support protrusions 40a that surround and support the circumference of the screw 3.

Here, the coupling ring 10 not only corresponds to a fastener that allows the multi-purpose cover 1 for an electric screwdriver according to an embodiment of the disclosed content to be coupled to the front side 2a of the electric screwdriver 2, but also removes dust. It serves as an end fixture for the dust collector to which one end of the receiver 20 is fixed.

This coupling ring 10 may be fixedly coupled to the front side 2a of the electric driver 2, but is preferably detachably coupled to the front side 2a of the electric driver 2. In the latter case, the coupling ring 10 may be press-fitted around the outer circumference of the front side 2a of the electric driver 2, and may have an inner diameter larger than the outer circumference of the front side 2a of the electric driver 2. However, a plurality of fastening bolts may penetrate inward in the radial direction and be connected to the front side (2a) of the electric driver (2).

The rear end of the dust collector 20 is connected to the above-described coupling ring 10 and extends forward. For example, the dust collector 20 serves to accommodate foreign substances such as chips that come out of the wall when a screw is coupled to a base material such as a wall, from scattering to the outside, and at the same time surrounds the driver shaft of the electric driver 2. Accordingly, it serves to protect the driver shaft of the electric driver (2) from the outside.

For example, the dust collector 20 is preferably formed as a cylindrical bellows capable of being folded in multiple stages so that the length can be changed to correspond to the length of the screw inserted into the base material, such as a wall. In addition, the dust collector 20 can be made of a translucent material, but it is preferably made of a transparent or translucent material so that the alignment of the screws, etc. can be visually confirmed through internal viewing.

In addition, since the elastic coil spring 21 is built into the dust collector 20, which is formed in the form of a cylindrical bellows so that it can be folded in multiple stages, the front end of the dust collector 20 always has a screw in the base material such as a wall. It is preferable that it is formed to be elastically biased around the point being inserted.

A base material contact ring 30 is connected to the front end of the dust collector 20 described above. The base material contact ring 30 serves to interview a base material, such as a wall, by the elastic deflection force of the elastic coil spring 21, and is in the form of an end ring to which the front end of the dust collector 20 is fixed. is formed

The base material contact ring 30 is preferably made of synthetic resin, but can also be made of various materials such as metal. However, it is preferable that a sealing layer made of an elastic material such as rubber, silicone, urethane, etc. is laminated on the front surface of the base material contact ring 30 that is in contact with the base material to prevent a gap from being formed between the base material and the base material. Depending on the embodiment, the base material contact ring 30 itself may be made of an elastic material such as rubber, silicone, urethane, etc.

A screw holder 40 is detachably coupled to the base material contact ring 30 described above. The screw holder 40 serves to rotatably support a screw inserted into a base material such as a wall, and is provided at the center with a plurality of screw support protrusions 40a that surround and support the circumference of the screw 3. It is desirable to be

The plurality of screw support protrusions (40a) are formed in a structure that elastically holds the circumference of the screw (3) by spreading outward in the radial direction so that the head of the screw (3) can be inserted and then returning to the original position in the radial direction. It is desirable.

In order to detachably couple the screw holder 40 to the base material face ring 30, a plurality of coupling grooves 31 are formed in the base metal face ring 30 at regular angular intervals, and the screw holder has a plurality of coupling grooves ( A plurality of coupling protrusions 41 that are simultaneously detachably coupled to 31 may be formed to protrude corresponding to the coupling groove 31.

At this time, when the coupling groove 31 formed in the base material contact ring 30 is formed as an angle-shaped groove that extends straight from the front to the rear and then bends laterally, the screw holder 40 is connected to the base material contact ring 30. After being inserted from the front, it is rotated at a certain angle and coupled to the base material face ring 30, and then rotated in the opposite direction with respect to the base face ring 30 and then separated to the front.

In addition, the screw holder 30 may be detachably coupled to the base material face ring 40, especially the inner peripheral surface, using a fastening screw or a magnet.

As described above, in the case of the multi-purpose cover 1 for an electric screwdriver according to an embodiment of the disclosed content, the rear end is normally coupled to the front side of the electric screwdriver 2 and the front end is spaced apart from the periphery of the screw. It is used as a dust collector to contain cutting chips and dust that are separated from the base material when screwing to the base material as it is interviewed on the base material, and when necessary, a ring-shaped screw is attached to the front end, especially to the base material face ring (30). As the holder (40) is combined, it becomes possible to grip the circumference of the screw, so when a relatively long screw is to be coupled to the base material, the screw can be stably coupled to the base material without being separated from the electric driver (2). Convenience is increased and at the same time, various user preferences can be satisfied.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments described in this specification and the configuration shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention. Since this is not the case, it should be understood that there may be various equivalents and modifications that can replace them at the time of filing this application. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from the equivalent concept should be construed as falling within the scope of the present invention.

1: Multipurpose cover for electric screwdriver
2: Electric screwdriver
2a: anterior side
3: screw
4: Base material
10: coupling ring
20: Dust collector
21: Elastic coil spring
30: Base material interview ring
31: Combining groove
40: screw holder
40a: Screw support protrusion
41: combining protrusion

Claims (5)

A coupling ring coupled to the front side of the electric driver;
a dust collector whose rear end is connected to the coupling ring and extends forward and surrounds the driver shaft of the electric driver;
A base material contact ring connected to the front end of the dust collector; and
A multi-purpose cover for an electric screwdriver including a screw holder that is detachably coupled to the base material face ring and has a plurality of screw support protrusions in the center that surround and support the circumference of the screw. In claim 1,
The dust collector is a multi-purpose cover for an electric screwdriver, characterized in that it is formed of a transparent or translucent cylindrical bellows capable of multi-stage folding and internal transparency. In claim 2,
A multi-purpose cover for an electric screwdriver, characterized in that an elastic coil spring is built into the dust collector. The method of any one of claims 1 to 3,
A plurality of coupling grooves are formed at regular angular intervals in the base material face ring, and a plurality of coupling protrusions that are simultaneously detachably coupled to the plurality of coupling grooves are formed to protrude corresponding to the coupling grooves in the screw holder. Multipurpose cover for electric screwdriver. The method of any one of claims 1 to 3,
A multi-purpose cover for an electric screwdriver, wherein the screw holder is detachably coupled to the base material contact ring by a fastening screw or a magnet.

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