KR20170031492A - spindle structure of electric powered tool - Google Patents

spindle structure of electric powered tool Download PDF

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Publication number
KR20170031492A
KR20170031492A KR1020150129120A KR20150129120A KR20170031492A KR 20170031492 A KR20170031492 A KR 20170031492A KR 1020150129120 A KR1020150129120 A KR 1020150129120A KR 20150129120 A KR20150129120 A KR 20150129120A KR 20170031492 A KR20170031492 A KR 20170031492A
Authority
KR
South Korea
Prior art keywords
spindle
connection
connection male
adapter
power tool
Prior art date
Application number
KR1020150129120A
Other languages
Korean (ko)
Inventor
민경철
Original Assignee
이에스산업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이에스산업 주식회사 filed Critical 이에스산업 주식회사
Priority to KR1020150129120A priority Critical patent/KR20170031492A/en
Publication of KR20170031492A publication Critical patent/KR20170031492A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/003—Attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/12—Adapters for drills or chucks; Tapered sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

A spindle structure of a power tool according to the present invention is a power tool having a spindle which is rotatably installed inside and combines or separates a drill bit, wherein a connecting female thread is formed at a predetermined depth in a front face of the spindle, Since the adapter having the first connection male threaded portion to be coupled to the connection female threaded portion and the second connection male threaded portion to fasten the other end to the drillet can be coupled or detachably installed, The drill bit can be selectively fixed and the drill bit can be replaced easily.

Figure P1020150129120

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a spindle structure of an electric powered tool,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle structure of a power tool, and more particularly, to a spindle structure of a power tool, which improves the structure so that various types of drill bits can be coupled or separated via adapters and drill chucks, To a spindle structure of a power tool.

1 and 2, a taper hole 3a is formed in the spindle 3 of the conventional electric power tool 1 so that a drill bit 5 having a tapered bag portion conforming to the standard is engaged or disengaged .

That is, the spindle 3 is pressed and fixed by the taper angle corresponding to each other when the drill bit 5 is engaged. When the drill bit 5 is detached, a drift pin is attached to the drift hole of the spindle 3 So that the drill bit 5 is pulled out.

However, since the conventional taper hole 3a of the spindle 3 has a structure in which only one kind of drill bit 5 having a tapered bag portion conforming to the standard can be fitted to fit the taper angle, There is a problem in that it is not possible to use drill bits of various sizes that do not meet the standard.

In addition, there is a problem that a drill bit having a taperless bag portion can not be used in the taper hole 3a of the spindle 3. [

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power tool that can be conveniently used by fixing various kinds of drill bits regardless of size and taper, To provide a spindle structure.

According to an aspect of the present invention, there is provided a spindle structure for a power tool, the spindle structure including a spindle for coupling or separating a drill bit while being installed inside the spindle, And an adapter having a second connection male threaded portion is coupled or detachably installed on the spindle so that a first connection male thread portion is formed on one end of the spindle and the second connection male thread portion is fastened on the other end of the spindle, .

According to another embodiment of the present invention, a screw thread hole is formed on one side of the tip of the spindle of the present invention so as to penetrate through the threaded screw thread portion at right angles to the threaded screw threads. The first threaded screw portion of the adapter, And the lock bolt is coupled so as not to be caught.

In another embodiment, the adapter of the present invention is characterized in that a hexagonal body is formed between the first connection male thread portion and the second connection male thread portion, and between the first connection male thread portion and the hexagonal body, And a connection female screw portion is formed on the front surface of the second connection male thread portion so that a left screw of the drill is fastened to a predetermined depth.

Since the spindle structure of the power tool of the present invention has a structure in which a female thread is formed on a spindle of a power tool and a drill bit is connected to the tool through an adapter, various types of drill bits can be fixed and used conveniently with or without a taper And the replacement of the drill bit is convenient.

1 is an exploded perspective view showing a conventional electric power tool and a drill bit,
2 is a perspective view showing a drill bit coupled to a spindle of a conventional power tool,
3 is a perspective view showing a state where an adapter is coupled to a spindle of a power tool according to the present invention,
4 is a perspective view showing a drill bit coupled to a spindle of a power tool according to the present invention through an adapter,
5 is a sectional view showing a spindle, an adapter, and a drilled structure of a power tool according to the present invention,
6 is an assembled cross-sectional view illustrating a spindle, an adapter, and a drilling structure of a power tool according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6. FIG.

A spindle structure of a power tool according to the present invention is a power tool 1 having a spindle 30 which is rotatably installed inside and engages or disengages a drill bit 5, A first connection male thread portion 52 is formed in the spindle 30 so that one end thereof is fastened to the connection female threaded portion 32 and a second connection threaded portion 52 is formed in the other end of the spindle 30, And an adapter 50 having a second connection male thread portion 54 formed therein so as to be coupled thereto.

A locking screw hole 34 is formed at one side of the front end of the spindle 30 so as to penetrate through the coupling female screw portion 32 at a right angle with the locking screw hole 34, The lock bolt 36 is engaged so that the first connection male thread portion 52 of the adapter 50 is held so as not to be separated.

The adapter 50 has a hexagonal body 56 formed between the first connection male thread portion 52 and the second connection male thread portion 54 and has a first connection male thread portion 52 and a hexagonal body 56 of the drill chuck 40 is formed with a non-slant surface 58 having a diameter smaller than the outer diameter of the first connection male thread portion 52. The left and right sides of the drill chuck 40 are fixed to the front surface of the second connection male thread portion 54 by a predetermined depth. And a connection female threaded portion 60 is formed so that the screw 42 is fastened.

Reference numeral 44 denotes a connecting female threaded portion in which the drill chuck 40 is fastened to the second connecting male thread portion 54 of the adapter 50; And a reference numeral 48 denotes a jaw of the drill chuck 40. As shown in FIG.

Next, the operation and effect of the spindle structure of the power tool of the present invention constructed as described above will be described.

The drill bit 5 of various sizes is attached to the spindle 30 of the power tool 1 of the present invention by first inserting the adapter 50 into the connecting female threaded portion 32 formed on the front surface of the spindle 30, The first connection male thread portion 52 is engaged and tightened by inserting a tool such as a spanner or a wrench into the intermediate hexagonal body 56 of the adapter 50. [

Thereafter, the locking bolt 36 screwed to the one-side locking screw hole 34 of the spindle 30 is tightened so that the tip of the locking bolt 36 is pressed against the non-beveled surface 58 of the adapter 50 So that the first connecting male threaded portion 52 of the adapter 50 is not separated from the connecting female threaded portion 32 of the spindle 30 by the rotational force of the spindle 30. [

The connecting screw portion 44 of the drill chuck 40 is aligned with the second connecting male screw portion 54 of the adapter 50 and the left screw 42 is screwed into the through hole 46 to the connecting female threaded portion 60 of the adapter 50 and fastened.

Since the spindle 30 and the drill bit 40 of the power tool 1 are coupled through the adapter 50 and the left screw 42 as shown in Fig. 6, (48) of the handle (40) and tightening the handle in the fastening direction.

In other words, the drill chuck 40 can be arbitrarily adjusted so that the jaws 48 are radially expanded and expanded along the direction of rotation of the handle. Therefore, the drill bit 40 is not limited to various kinds of drill bits 5, Various tools such as a screwdriver can be inserted and used.

It is also possible to eliminate the adapter 50 and directly couple the male thread portion of the mixer blade to the threaded portion of the mixer blade so as to correspond to the connection female threaded portion 32 formed on the spindle 30 of the power tool 1. [

Therefore, since the spindle 30 of the power tool 1 has the connecting female threaded portion 32 formed therein to connect the drill chuck 40 via the adapter 50, The drill bit 5 can be conveniently used as well as being easily fixed by fixing various kinds of drill bits 5.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. You must see.

1: Power tool 5: Drill bit
30: spindle 32: connecting female thread portion
34: Locking screw hole 36: Locking bolt
40: Drill screw 42: Left screw
50: adapter 52: first connection male thread portion
54: second connection male thread portion 56: hexagonal body
58: non-slope surface 60: connecting female thread portion

Claims (3)

A power tool (1) having a spindle (30) which is rotatably installed inside and engages or disengages a drill bit (5)
A connecting female threaded portion 32 is formed at a predetermined depth on the front surface of the spindle 30,
The spindle 30 is formed with a first connection male screw portion 52 so that one end thereof is fastened to the connection female screw portion 32 and a second connection male screw portion 54 is formed such that the other end thereof is fastened to the drill Characterized in that the adapter (50) is installed in a detachable or attachable manner. The method according to claim 1,
A locking screw hole (34) is formed at one end of the spindle (30) so as to penetrate through the coupling female threaded portion (32)
Wherein the lock bolt is coupled to the lock screw hole so that the first connection male screw portion of the adapter connected to the connection female screw portion is not separated. Spindle structure of tool. The method according to claim 1,
The adapter (50)
A hexagonal body 56 is formed between the first connection male thread portion 52 and the second connection male thread portion 54,
A ratio or slope 58 having a diameter smaller than the outer diameter of the first connection male thread portion 52 is formed between the first connection male thread portion 52 and the hexagonal body 56,
Wherein a connection female threaded portion (60) is formed on the front surface of the second connection male threaded portion (54) so that a left screw (42) of the drillet (40) is fastened to a certain depth.
KR1020150129120A 2015-09-11 2015-09-11 spindle structure of electric powered tool KR20170031492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150129120A KR20170031492A (en) 2015-09-11 2015-09-11 spindle structure of electric powered tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150129120A KR20170031492A (en) 2015-09-11 2015-09-11 spindle structure of electric powered tool

Publications (1)

Publication Number Publication Date
KR20170031492A true KR20170031492A (en) 2017-03-21

Family

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Family Applications (1)

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KR1020150129120A KR20170031492A (en) 2015-09-11 2015-09-11 spindle structure of electric powered tool

Country Status (1)

Country Link
KR (1) KR20170031492A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190091999A (en) 2018-01-30 2019-08-07 한국전력공사 Suction Type Drilling Machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190091999A (en) 2018-01-30 2019-08-07 한국전력공사 Suction Type Drilling Machine

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