KR20170006624A - Assistant bit assembly for self drill screw - Google Patents

Assistant bit assembly for self drill screw Download PDF

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Publication number
KR20170006624A
KR20170006624A KR1020150097532A KR20150097532A KR20170006624A KR 20170006624 A KR20170006624 A KR 20170006624A KR 1020150097532 A KR1020150097532 A KR 1020150097532A KR 20150097532 A KR20150097532 A KR 20150097532A KR 20170006624 A KR20170006624 A KR 20170006624A
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KR
South Korea
Prior art keywords
compression spring
outer cylinder
drill
direct
screw
Prior art date
Application number
KR1020150097532A
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Korean (ko)
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KR101771602B1 (en
Inventor
황명환
이종혁
우인성
전웅
Original Assignee
인천대학교 산학협력단
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Application filed by 인천대학교 산학협력단 filed Critical 인천대학교 산학협력단
Priority to KR1020150097532A priority Critical patent/KR101771602B1/en
Publication of KR20170006624A publication Critical patent/KR20170006624A/en
Application granted granted Critical
Publication of KR101771602B1 publication Critical patent/KR101771602B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/005—Screw guiding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

An assistant bit assembly for a direct screw is disclosed. The assistant bit assembly for a direct screw of the present invention comprises: a bit having one end at which a mount part mounted on a chuck of a drill is formed and the other end at which an insertion part inserted into a groove formed in a head of a direct screw is formed, and having a cylindrical rotation part formed between the mount part and the insertion part; an outer container having opening both ends thereof, formed to be long in a longitudinal direction of the bit, and sliding in the insertion part; and a compressed spring provided in the outer container and pressurizing the rotation part in a mount part side. Outer force except for a direction in which the direct screw is inserted into a member to be fastened of straight outer force applied to the mount part from the drill is offered by kinetic friction force between the rotation part and the outer container and static friction force between the outer container and the member to be fastened. According to the present invention, the assistant bit assembly for a direct screw can allow even a person who is unskilled at operation of a driver or a drill to screw a direct screw at a right angle to an installation surface and prevent powders generated when the direct screw is screwed from falling to the bottom or being blown.

Description

[0002] ASSISTANT BIT ASSEMBLY FOR SELF DRILL SCREW [0002]

More particularly, the present invention relates to a direct coupling and a use auxiliary bit assembly. More particularly, a person who is inexperienced in operating a screwdriver or a drill can also insert a direct coupling screw in a state of forming a right angle with a mounting surface, And to prevent the flaking of the sliced wall surface from falling to the floor or from being blown.

There are cases where nails are stuck in steel, such as when a safety gate or a door stopper is placed on a security door, or when a hinge is attached to a seat. At this time, the nail end is sharp, so use the direct screw that drills through the iron.

Direct-connection screws are drilled or pointed at the ends of the screws, so they are drilled directly into the mounting material without any additional processing. That is, the pointed end of the direct-coupling screw is strongly rotated by a screwdriver using a safety screw or an iron screwdriver which is to be inserted through a hole formed in a door stopper. The nail force is strong and can be used to fix the horseshoe in the iron gate.

However, it is practically difficult for a skilled engineer to insert the direct coupling screw so that it is exactly perpendicular to the installation surface. If the direct coupling screw is not perpendicular to the installation surface and is inclined at either side, the head of the direct- There is a problem that the door stopper or the hinge is easily shaken due to the failure to form a rigid coupling structure by fixing the door stopper or the hinge.

In addition, when a direct-coupling screw used for fixing an object easily seen from the outside such as a door stopper or a hinge is not perpendicular to the installation surface but is inclined to either side, the head of the tilted direct- .

It is an object of the present invention to provide a screwdriver capable of forming a right-handed screw in a state in which a screwdriver is formed at a right angle to the mounting surface, and that the powder of the wall surface cut off when the screw- And to provide a direct connection or use auxiliary bit assembly which is made to prevent the use.

According to an aspect of the present invention, there is provided an insertion portion to be inserted into a groove formed in a head of a direct-coupling screw is formed at one end of a mounting portion to be mounted on a chuck of a drill, A bit formed with a rotation part of the magnet; An outer tube having both ends opened to be elongated in the lengthwise direction of the bit, the inserting portion slidably moving in the inserting portion; And a compression spring which is provided in the outer cylinder and presses the rotary portion toward the mounting portion, wherein an external force other than a direction of the linear force exerted on the fastening screw by the fastening screw from the drill, Is canceled by the frictional force between the rotating part and the outer tube and the static friction between the outer tube and the engaged member.

The packing member elastically deformed by the linear external force applied from the drill to the mounting portion is engaged with the end portion of the outer cylinder which is brought into close contact with the engaged member by the recovery force of the compression spring, And the frictional force between the clamped member and the clamped member may be increased.

Wherein the compression spring includes a first compression spring and a second compression spring that are spaced apart from each other in the longitudinal direction of the outer cylinder and between the first compression spring and the second compression spring, And a guide member for guiding the head of the direct coupling screw to the insertion portion.

The outer tube may further include a plurality of through holes formed along the circumferential direction, respectively, openings formed at both ends of the outer tube, and a storage vinyl covering the outer tube to surround the through hole.

According to the present invention, among the linear external forces exerted from the drill to the mounting portion, external forces other than directions in which the direct-connection screw is fastened to the fastened member are canceled by the frictional force between the rotary portion and the external cylinder and the static friction between the external cylinder and the engaged member, It is possible to provide a direct connection or a use auxiliary bit assembly in which an inexperienced person in the operation of the drill can pinch the direct screw in a state in which the direct screw is formed at a right angle with the mounting surface.

The present invention further provides a direct connection or use auxiliary bit assembly for preventing the powder on the wall surface, which is cut off when the direct coupling screw is screwed on, from falling to the floor or from being blown, by further comprising the storage vinyl which is wrapped around the through- .

1 is a perspective view of a direct connection or use auxiliary bit assembly of the present invention;
FIG. 2 is a cross-sectional view showing a state of use of the direct connection or use auxiliary bit assembly of FIG. 1;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

The direct connection or the use auxiliary bit assembly of the present invention can be formed in a state in which a driver and a drill are inexperienced even in the operation of the drill and the direct coupling screw forms a right angle with the installation surface. As shown in Fig.

FIG. 1 is a perspective view of a direct connection or use auxiliary bit assembly of the present invention, and FIG. 2 is a cross-sectional view illustrating the use of a direct connection or use auxiliary bit assembly of FIG. 1;

As shown in FIGS. 1 and 2, the direct connection or use auxiliary bit assembly 1 of the present invention is designed such that even if a driver or an operator of the drill D is unfamiliar with the operation of the drill D, (10), the outer tube (20), and the compression spring (30) when the direct-coupling screw (P) is inserted into the hole .

1 and 2, the bit 10 is an intermediary for transferring the rotational force of the drill D to the direct-connection screw P, and includes a mounting portion 11, an insertion portion 12, and a rotation portion 13 .

The bit 10 is elongated in one direction and the mounting portion 11 and the inserting portion 12 are provided at both ends of the bit 10 and the rotating portion 13 is provided between the mounting portion 11 and the inserting portion 12 Respectively.

As shown in Figs. 1 and 2, the mounting portion 11 is formed in a circular or hexagonal cross section so as to be mounted on the chuck C, configured to be pushed by the chuck C of the drill D. The rotational force of the drill D is applied to the mounting portion 11 through the chuck C and the mounting portion 11, the rotation portion 13 and the insertion portion 12 rotate together when the drill D is rotated.

2, the insertion portion 12 is configured to transmit the rotational force of the drill D to the direct-connection screw P, and is inserted into a straight line, a cross or a hexagonal groove formed in the head of the direct- And has a leading edge, a cross, or a hexagonal prism.

Although not shown, the insertion portions 12 may be detachably coupled to the rotary portion 13 by being provided in plural numbers having different tip portions according to the groove shape of the direct-coupling screw P.

That is, the rotary section 13 is formed with a groove into which the insertion section 12 is inserted, and the insertion section 12 may be formed with a protrusion inserted into the groove of the rotary section 13 on the opposite side of the tip section. The protrusions and grooves are preferably formed in a square or hexagonal cross-section so that rotational force is smoothly transmitted.

The user can press the mounting portion 11 in the direction of the insertion portion 12 to expose the insertion portion 12 through the opening on the flange side and separate or join the insertion portion 12.

2, the rotating portion 13 is configured to slide along the longitudinal direction while rotating inside the outer cylinder 20, and is provided in a cylindrical cross-sectional shape between the mounting portion 11 and the insertion portion 12 .

As shown in Figs. 1 and 2, the outer tube 20 has a structure in which the insertion portion 12 is slid while rotating inside, and both ends are opened to be long in the longitudinal direction of the bit 10.

2, the inner circumferential surface of the outer tube 20 is formed in a cylindrical shape, and the inner circumferential surface of the outer tube 20 is formed so as to follow the circumferential direction of the cylindrical outer circumferential surface of the rotating portion 13, A small gap is formed.

2, a flange portion F forming a wide contact surface with the engaged member W is formed on one of both open ends of the outer cylinder 20, On one side, a step portion is formed around the hole to prevent the rotation part 13 from being separated by the recovery force of the compression spring 30, the rotation part 13 being in contact with the hole.

2, a cylindrical connection portion 14 having a smaller radius than the rotation portion 13 is formed between the mounting portion 11 of the bit 10 and the rotation portion 13. As shown in Fig. When the linear external force is applied to the mounting portion 11 from the drill D, the connecting portion 14 enters the inside of the outer cylinder 20 through the hole or flows out of the outer cylinder 20, As shown in FIG.

2, the compression spring 30 is provided inside the outer cylinder 20 to press the rotation portion 13 toward the mounting portion 11 with respect to the outer cylinder 20. [ The compression spring 30 is elastically compressed between the flange portion F and the rotation portion 13 and is in a state in which the rotation portion 13 is pressed toward the mounting portion 11 And the outer cylinder 20 is pressed toward the mounting surface).

The compression spring 30 may be integrally formed, but may include a first compression spring 31 and a second compression spring 32, as shown in FIG.

2, the first compression spring 31 and the second compression spring 32 are spaced apart from each other in the longitudinal direction of the outer cylinder 20, and the first compression spring 31 and the second compression spring 32 The guide member S is provided.

The first compression spring 31 is elastically compressed between the flange portion F and the guide member S and the second compression spring 32 is provided between the guide member S and the rotation portion 13 As shown in FIG.

2 (b), the guide member S has a structure for guiding the head of the direct coupling screw P to the tip portion of the insertion portion 12 in the outer cylinder 20, and has a cylindrical outer peripheral surface and a funnel And has an inner peripheral surface of a die.

The direct coupling screw P is inserted into the outer cylinder 20 through one of both open ends of the outer cylinder 20. The head of the inserted direct coupling screw P slides on the funnel- And is guided to the tip of the portion 12. It is preferable to erect the auxiliary bit assembly 1 so that the direct coupling screw P is guided toward the insertion portion 12 by gravity when the direct coupling screw P is inserted into the outer cylinder 20. [

2 (b) and 2 (c), the guide member S has a first compression spring 31 and a second compression spring 32 at the time of compression and tensioning of the first compression spring 31 and the second compression spring 32, The second compression spring 32 and the second compression spring 32 slide and move in the outer tube 20 along the compression and tensioning mode.

There are cases where nails are stuck in steel, such as when a safety gate or a door stopper is placed on a security door, or when a hinge is attached to a seat. At this time, the nail end is sharp, so use the direct screw that drills through the iron.

Direct-connection screws are drilled or pointed at the ends of the screws, so they are drilled directly into the mounting material without any additional processing. That is, the pointed end of the direct-coupling screw is strongly rotated by a screwdriver using a safety screw or an iron screwdriver which is to be inserted through a hole formed in a door stopper. The nail force is strong and can be used to fix the horseshoe in the iron gate.

However, it is practically difficult for a skilled engineer to insert the direct coupling screw so that it is exactly perpendicular to the installation surface. If the direct coupling screw is not perpendicular to the installation surface and is inclined at either side, the head of the direct- There is a problem that the door stopper or the hinge is easily shaken due to the failure to form a rigid coupling structure by fixing the door stopper or the hinge.

In addition, when a direct-coupling screw used for fixing an object easily seen from the outside such as a door stopper or a hinge is not perpendicular to the installation surface but is inclined to either side, the head of the tilted direct- .

2C, a direct connection or use auxiliary bit assembly 1 according to the present invention is characterized in that the direct-connection external force Ft applied from the drill D to the mounting portion 11 is a straight- The external force Fh other than the direction of being struck by the member W is canceled by the dynamic frictional force between the rotary portion 13 and the outer cylinder 20 and the static frictional force between the outer cylinder 20 and the engaged member W, .

That is, when the direct coupling screw or the use auxiliary bit assembly 1 of the present invention is inserted into the chuck C of the drill D and then the direct coupling screw P is inserted into the fastened member W, The flange portion F is provided on the mounting surface of the member to be clamped W in a state shown in the figure so that a right angle is formed between the direct connection screw P and the mounting surface by the plane of the flange portion F. [

Then, as shown in Fig. 2 (c), the linear force of the worker pushing the direct coupling screw P in the direction of the fastening member W together with the rotational force of the drill D The rotational force and the vertical force Fv of the drill D are transmitted from the drill D chuck C only through the bit 10 to the direct coupling screw P but the linear external force The horizontal force Fh parallel to the mounting surface Ft is canceled by the frictional force between the rotating portion 13 and the outer cylinder 20 and the frictional force between the outer cylinder 20 and the engaged member W. [ The static friction force between the outer cylinder 20 and the clamped member W is proportional to the resilience of the compression spring 30 compressed by the movement of the rotary part 13. [

If the linear external force Ft applied to the mounting portion 11 from the drill D is all the normal force Fv then the dynamic frictional force between the rotary portion 13 and the outer cylinder 20 and the frictional force between the outer cylinder 20 and the engaged member W When the horizontal force component Fh is included in the linear external force Ft applied to the mounting portion 11 from the drill D, the flange portion F is moved to the mounting face The horizontal force Fh is transmitted to the mounting face via the outer cylinder 20 via the rotary portion 13. The dynamic friction force between the rotary portion 13 and the outer cylinder 20 due to the horizontal force Fh is transmitted to the drill D And the horizontal force Fh transmitted to the outer cylinder 20 is smaller than the static frictional force between the flange portion F and the engaged member W so that the perpendicular angle between the direct coupling screw P and the mounting surface is easily maintained do.

As shown in FIG. 2, it is preferable that a packing member 21 is coupled to an end of the outer cylinder 20. [ The packing member 21 is made of rubber or silicone or the like and is supported by a linear external force Ft applied to the mounting portion 11 from the drill D when the direct- And is elastically deformed between the support portion (F) and the mounting surface.

The recovery force of the compression spring 30 is increased as the direct coupling screw P is inserted into the clamped member W when the direct coupling screw P is inserted and the recovery force of the packing member 21 increased in proportion thereto increases The static friction force between the outer cylinder 20 and the engaged member W is increased.

1, a plurality of through holes 22 are formed in the outer cylinder 20 along the circumferential direction so as to discharge the debris of the engaged member W cut by the direct coupling screw P, and the outer cylinder 20 The storage vinyl 40 containing the debris of the clamped member W can be covered.

The storage vinyl 40 has openings at both ends thereof. The opening portion has a large entrance and a small exit. When the mounting portion 11 comes out through the entrance of the storage vinyl 40 to the exit, the outer tube 20 is received inside the storage vinyl 40.

In this state, when the direct-connection screw P is put on the clamped member W, the debris of the clamped member W falls into the storage vinyl 40 through the through hole 22, The debris is prevented from blowing into the air or falling to the floor.

According to the present invention, among the linear external force applied from the drill D to the mounting portion 11, an external force other than the direction in which the direct coupling screw P is fastened to the fastened member W is transmitted between the rotary portion 13 and the outer cylinder 20 The motion friction force and the inertia force between the outer cylinder 20 and the clamped member W are canceled by the static friction force between the outer cylinder 20 and the clamped member W. Therefore, It is possible to provide a direct connection or a use auxiliary bit assembly 1 which can be formed into a thin film.

The present invention further includes the storage vinyl 40 that covers the outer cylinder 20 so as to surround the periphery of the through hole 22 so that the powder of the wall surface cut off when the direct coupling screw P is put down It is possible to provide a direct connection or use auxiliary bit assembly 1 that is prevented from being blown.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

1: Auxiliary bit assembly D: Drill
10: bit C: chuck
11: Mounting part P: Direct screw
12: insertion portion W: engaged member
13: rotation part 30: compression spring
20: outer tube 31: first compression spring
21: packing member 32: second compression spring
22: through hole S: guide member
F: flange portion 40: storage vinyl

Claims (4)

A bit formed at one end of the drill to be mounted on a chuck and an insert formed at the other end to be inserted into a groove formed in a head of a direct coupling screw and having a cylindrical rotating part formed between the mounting part and the insertion part;
An outer tube having both ends opened to be elongated in the lengthwise direction of the bit, the inserting portion slidably moving in the inserting portion; And
And a compression spring provided in the outer cylinder and pressing the rotation part toward the mounting part,
The external force in a direction other than the direction in which the direct coupling screw is fastened to the engaged member out of the linear external force applied to the mounting portion from the drill is canceled by the frictional force between the rotating portion and the external cylinder and the static friction between the external cylinder and the engaged member Features direct coupling or use auxiliary bit assembly. The method according to claim 1,
A packing member elastically deformed by a linear external force applied from the drill to the mounting portion is engaged with an end portion of the outer cylinder which is in close contact with the engaged member due to the recovery force of the compression spring,
And the static friction between the outer cylinder and the engaged member is increased by the recovery force of the packing member. The method according to claim 1,
Wherein the compression spring includes a first compression spring and a second compression spring spaced from each other in the longitudinal direction of the outer cylinder,
Wherein a guide member is provided between the first compression spring and the second compression spring so as to be slidable along the longitudinal direction of the outer cylinder and guides the head of the direct coupling screw to the insertion portion. Bit assembly. The method according to claim 1,
A plurality of through holes are formed in the outer cylinder along the circumferential direction,
Further comprising a storage vinyl formed at both ends thereof with an opening and covering the outer tube so as to surround the perimeter of the through hole.
KR1020150097532A 2015-07-09 2015-07-09 Assistant bit assembly for self drill screw KR101771602B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150097532A KR101771602B1 (en) 2015-07-09 2015-07-09 Assistant bit assembly for self drill screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150097532A KR101771602B1 (en) 2015-07-09 2015-07-09 Assistant bit assembly for self drill screw

Publications (2)

Publication Number Publication Date
KR20170006624A true KR20170006624A (en) 2017-01-18
KR101771602B1 KR101771602B1 (en) 2017-08-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150097532A KR101771602B1 (en) 2015-07-09 2015-07-09 Assistant bit assembly for self drill screw

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3285823B2 (en) * 1998-07-09 2002-05-27 株式会社ベッセル工業 Screwdriver for screwdriver bit
KR100926891B1 (en) * 2009-03-03 2009-11-16 상 호 최 Screwdriver and screwdriver bit including a means of supporting a screw

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KR101771602B1 (en) 2017-08-25

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