KR101862092B1 - Electric drill for water supply - Google Patents

Abstract

The present invention provides an electric perforator for a water supply, in which a perforation shaft is moved in the vertical direction by the rotation of a handle provided at an upper part such that the perforation work of a water pipe can be performed with a small force and the handle can be easily controlled in a narrow space. The electric perforator for a water supply of the present invention in order to solve the above problem, includes: a perforation shaft extended in the vertical direction, having a penetration blade coupled to the lower part thereof so as to penetrate a water supply pipe, and rotationally provided inside a housing; a transmission shaft rotationally provided inside the housing so as to be in parallel to the perforation shaft, and having one end coupled to the power shaft of a motor by a first gear part and the other end coupled to the perforation shaft by a second gear part; a guide shaft having a male thread, which is formed on the outer circumferential surface thereof and extends in the vertical direction, and provided in parallel to the perforation shaft inside the housing so as to be axially rotatable; and a movement guide part screwed to the guide shaft such that the perforation shaft can be transferred by rotation of the guide shaft in the vertical direction.

Description

[0002] Electric drill for water supply [0003]

More particularly, the present invention relates to a motorized perforator for waterworks, and more particularly to a motorized perforator for perforating a water supply pipe, The present invention relates to a motorized perforator for a water service capable of easily controlling a steering wheel.

Generally, water pipes are often used because high pressure constants flow through them. In order to connect new pipes to existing water pipes, a continuous water pipe drilling is performed.

The term " continuous water hole " refers to a method of installing a branch pipe through a hole for branching in a state in which water having a predetermined pressure flows into the water supply pipe, which is mainly composed of an electric perforator.

A conventional motorized drilling machine is configured to drill a hole in the water supply pipe as the motor rotates the movable shaft while the cutting edge is engaged with the leading end of the movable shaft. As one of techniques for such an electric drilling machine, Japanese Patent Application Laid-Open No. 10-2004-0104163 (hereinafter referred to as "prior art") is disclosed.

In the conventional art, there is provided a pipe punching apparatus for punching a hole in a pipe by moving a cutting edge toward the inside of the pipe in accordance with driving of the motor in a state of being fastened to a clamp and fastened to a clamp clamped to the pipe A movable shaft rotatably disposed inside the first housing to rotate the cutting edge; And a screw shaft rotatably coupled to a rear end of the movable shaft, the screw shaft being disposed inside the second housing to pierce the pipe through the cutting edge in a state in which the movable shaft is rotatable, A movable shaft moving means having a bevel gear portion for rotating the movable shaft; The movable shaft is rotated to rotate at a low speed or at a high speed in accordance with the size of the tip of the movable shaft and the diameter of the hole to be drilled in the metal powder removing means disposed at the fixed portion so as to adsorb the metal powder generated in the drilling through the magnetic force And gear shifting means disposed at a rear end of the fixed end for rotatably supporting the shaft and for shifting the rotational speed of the uniform motor.

That is, in the related art, when the handle is rotated on the side surface of the housing while the movable shaft is rotated by operating the motor, the movable shaft is moved downward and the water pipe is perforated.

However, according to the conventional art, since the handle is formed on the side surface of the housing, there is a disadvantage that a greater amount of force is required to rotate the handle to perforate the water supply pipe, and it is difficult to handle the handle in a narrow space.

In addition, in the related art, the movable shaft for perforating the water supply pipe and the shaft for guiding the movable shaft in the up-and-down direction are arranged on one axis, that is, the equipment is elongated in the vertical direction, , It is difficult to install in a low-height space, and it is also difficult to handle equipment.

KR 10-2004-0104163 A 2004.12.10.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide a water purifier that is constructed such that a piercing shaft is moved in a vertical direction, The present invention provides a motorized perforator for waterworks, which can drill a pipe smoothly and steer the handle even in a narrow space.

In order to solve the above-described problems, the present invention provides a motor-driven perforator for waterworks, the motor-driven perforator comprising: a perforation shaft which extends vertically and has a through-hole for penetrating the water- Wherein the first gear portion is engaged with the power shaft of the driving motor and the other end is coupled with the punch shaft by the second gear portion, ; A guide shaft having a male thread formed on an outer circumferential surface thereof and extending in the vertical direction and being disposed in parallel with the perforation shaft so as to be rotatable within the housing; And a movement guide unit that is screwed with the guide shaft so that the piercing shaft is vertically transferred by rotation of the guide shaft.

In this case, the movement guide unit may include: a first coupling unit including a transmission shaft coupling hole formed on the movement guide unit so as to be concentric with the transmission shaft, and a first bearing provided in the transmission shaft coupling hole; A second coupling part including a piercing shaft coupling hole formed on the movement guide part so as to be concentric with the piercing shaft and a second bearing provided on the piercing shaft coupling hole; And a guide nut portion passing through the movement guide portion so as to be concentric with the guide shaft.

The second gear portion may include a third gear coupled to the lower shift shaft of the movement guide portion; And a fourth gear engaged with the lower punching shaft of the movement guide unit to engage with the third gear.

Further, on the upper portion of the housing, a handle coupled to the upper portion of the guide shaft for rotating the guide shaft is exposed to the outside of the housing.

According to the present invention, when the handle is rotated in a state in which the perforation shaft and the guide shaft are arranged side by side in the width direction, the movement guide portion is moved downward and the perforation shaft is also moved downward, It has the advantage of reducing the weight of the equipment.

In addition, since the drill can be easily punched with a small force and can be easily handled, various workers such as unskilled or aged workers can easily perform drilling work.

According to the present invention, since the drilling operation can be performed in a state where the handle is located on the upper side of the housing, there is an effect that the user can smoothly handle the handle even in a narrow space.

1 is a perspective view of a motorized perforator for waterworks according to the present invention.
2 is a sectional view taken along the line AA 'of FIG. 1;
Figure 3 is an exploded cross-sectional view of the motorized perforator of Figure 2;
FIG. 4 is a perspective view showing a coupled state of the movement guide unit according to the present invention. FIG.
5 is a cross-sectional view illustrating an embodiment of using a motorized perforator for waterworks according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0001] The present invention relates to a motorized perforator for waterworks, and more particularly to a motorized perforator for waterworks, which is constructed such that a perforated shaft 200 is moved in a vertical direction by rotation of a handle 430 formed at an upper portion, The present invention relates to an electric drilling machine for a water supply that can handle the handle 430 easily in a narrow space.

FIG. 1 is a perspective view of a motorized perforator according to the present invention, FIG. 2 is a sectional view taken along the line AA 'of FIG. 1, FIG. 3 is an exploded cross- 5 is a cross-sectional view showing an embodiment of using the electric drill for waterworks according to the present invention, wherein (a) is a view showing a state in which a perforation axis is located above, (b) is a perspective view showing a perforation axis And FIG.

Referring to FIG. 2, the present invention includes a drilling shaft 200, a transmission shaft 300, a transmission gear unit, a guide shaft 400, and a movement guide unit 500.

The perforation shaft 200 is a shaft for perforating the water pipe. The perforation shaft 200 is vertically extended, and a through-hole for perforating the water pipe is connected to the perforation shaft 200 and is rotatably installed inside the housing 100.

In addition, a first through hole 110 through which a lower portion of the perforation shaft 200 is disposed is formed in a lower portion of the housing 100, and a pipe (not shown) is fixed to the first through hole 110, So that the coupling unit 130 is provided. At this time, the pipe coupling unit 130 is configured such that one side thereof is coupled to the first through hole 110, and the other side is coupled to a coupling member disposed on the water supply pipe observation side, Thereby forming a passage through which the gas is moved.

The perforation shaft 200 is formed as a long rod-shaped shaft having a coupling part 210 to which the through-hole is coupled at the lower part. The upper part is disposed inside the housing 100, and the coupling part 210 And is disposed in the passage of the pipe coupling unit 130 through the first through hole 110.

At this time, when the perforation shaft 200 is disposed on the uppermost side, the engaging portion 210 is placed in the passage.

The transmission shaft 300 transmits the power transmitted from the drive motor M to the punch shaft 200 and is disposed inside the housing 100 in parallel to the punch shaft 200 so as to be rotatable. And is connected to the power shaft PS of the drive motor M by a first gear portion G10 provided at one end and coupled to the power transmission shaft PS by the second gear portion G20 provided at the other end. .

The first gear G10 includes a first gear G1 coupled to an end of the power shaft PS and a second gear G1 coupled to one end of the transmission shaft 300 to be engaged with the first gear G1. And the first gear portion G10 is positioned on the lower side of the housing 100. [

At this time, the first gear G1 is completely fixed to the power shaft PS by the shaft key, and the second gear G2 is fixed to the transmission shaft 300 by the shaft key State.

The second gear portion G20 includes a third gear G3 coupled to the other end of the transmission shaft 300 and a fourth gear coupled to the punch shaft 200 to be engaged with the third gear G3. G4, and the second gear portion G20 is positioned on the upper side of the housing 100.

In this case, the third gear G3 is coupled to the other end of the transmission shaft 300 in a simple fit state, that is, to be movable in the axial direction of the transmission shaft 300, And the gear G4 is in a state of being completely fixed to the perforation shaft 200 by a shaft key.

The power generated from the drive motor M is transmitted to the transmission shaft 300 by the first gear unit G10 and the transmitted power is transmitted to the second gear unit G20 The power shaft PS, the transmission shaft 300, and the punch shaft 200 are coupled to each other so as to be transmitted to the punch shaft 200. [

The guide shaft 400 is a shaft for vertically moving the movement guide unit 500. The guide shaft 400 has a male thread formed on the outer circumferential surface thereof and extends in the vertical direction, (200).

The guide shaft 400 is formed in the form of a long bar having a handle coupling part 410 which is vertically extended and has a handle 430 coupled to the upper part thereof, And a second through hole 120 through which the coupling part 410 is disposed. At this time, the handle coupling part 410 is coupled to the handle 430 while passing through the second through hole 120 and exposed to the outside of the housing 100.

The power shaft PS, the transmission shaft 300, the punch shaft 200, and the guide shaft 400 are configured to be arranged in parallel in the width direction.

The movement guide unit 500 is configured to move the piercing shaft 200 in the vertical direction by the rotation of the guide shaft 400. The movement guide unit 500 is disposed in the housing 100 so that the transmission shaft 300, A second coupling part 520 and a guide nut part 530 so as to be organically coupled to the guide shaft 400 and the upper part of the guide shaft 400. The first coupling part 510,

The first coupling part 510 includes a transmission shaft coupling hole 511 through which the transmission shaft 300 is coupled and formed on the movement guide part 500 so as to be concentric with the transmission shaft 300, And a first bearing 512 provided in the transmission shaft coupling hole 511.

The third gear G3 is provided at a lower portion of the transmission shaft coupling hole 511 so that the upper portion of the third gear G3 is inserted into the transmission shaft coupling hole 511, . ≪ / RTI >

The second fastening part 520 includes a punch shaft fastening hole 521 formed on the movement guide part 500 so as to be concentric with the punch shaft 200 and fastened to the punch shaft 200, And a second bearing 522 provided in the perforation shaft fastening hole 521.

At this time, the fourth gear G4 is provided at the lower portion of the drilling shaft fastening hole 521, and the upper portion is inserted into the drilling shaft fastening hole 521, Is moved upward and downward, it can be moved in a state of being engaged with the third gear G3.

The guide nut portion 530 is engaged with the guide shaft 400 and is provided on the movement guide portion 500 so as to be concentric with the guide shaft 400. At this time, the inner circumferential surface of the guide nut part 530 is formed with a female screw thread corresponding to the male thread of the guide shaft 400.

That is, when the guide shaft 400 is rotated while the drive motor M is operated, the movement guide unit 500 is moved upward or downward along the guide shaft 400, The pipe is punctured.

In detail, the drilling shaft 200 is coupled to a cutting blade below the drilling shaft 200 so that the drilling shaft 200 is positioned at the uppermost position, and then the drilling machine is stably fixed to the water line.

When the drive motor M is operated, the power of the drive motor M is transmitted to the speed change shaft 300 by the first gear G10, and the power transmitted to the speed change shaft 300 The power shaft PS, the speed change shaft 300, and the perforation shaft 200 are simultaneously rotated by the second gear portion G20.

At this time, when the handle 430 is rotated in one direction, the guide shaft 400 is also rotated in one direction, and a guide nut portion 530 screwed with the guide shaft 400 is rotated along the guide shaft 400 And is moved downward.

At the same time, the third gear G3 and the fourth gear G4 respectively fastened to the lower portion of the transmission shaft fastening hole 511 and the lower shaft fastening hole 521 are pressed downward by the movement guide portion 500 .

At this time, the third gear G3 is slid along the outer circumferential surface of the transmission shaft 300 by the pushing of the movement guide unit 500, and the shaft rotation is continued, and the transmission shaft 300 is held in place The shaft is rotated in a fixed state.

Since the fourth gear G4 and the drilling shaft 200 are completely fixed to each other, when the fourth gear G4 is moved downward, the drilling shaft 200 also moves downward And the water pipe is pierced while being moved.

The movement guide unit 500 is moved from the uppermost position to the lowermost position of the guide shaft 400. At the lower end of the guide shaft 400, (420).

The stopper 420 is formed in the shape of a tube having a larger diameter than the guide shaft 400 and inserted into the lowest end of the guide shaft 400. Accordingly, the movement guide unit 500 stops moving downward by the stopper 420 before the second gear unit G20 collides with the bottom surface of the housing 100. [

The transmission shaft 300 serves to transmit the power of the driving motor M to the punch shaft 200. The transmission shaft 300 has a plurality of splines radially arranged on the outer circumferential surface thereof And a spline corresponding to the outer circumferential surface of the transmission shaft 300 is formed on the inner circumferential surface of the third gear G3.

Accordingly, the third gear G3 is slidable in the vertical direction along the transmission shaft 300 while being axially rotated in a state of being completely engaged with the transmission shaft 300, So that the transmission of power can be performed more reliably.

Meanwhile, the handle 430 is formed to be capable of folding the handle 431. The handle 431 is turned upward and the handle 431 is folded toward the housing 100 when not in use so that the usability is further improved .

In the meantime, according to the present invention, when the handle 430 is rotated, the movement guide unit 500 is moved downward so that the perforation shaft 200 is moved downward. Therefore, even if a small force is used, It is also advantageous for non-experts to easily perforate.

In addition, according to the present invention, since the drilling operation can be performed while the handle 430 is positioned on the upper side of the housing 100, the user can smoothly handle the handle 430 in a narrow space It is effective.

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 exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: housing 110: first through hole
120: second through hole 130: pipe coupling unit
200: Perforation shaft 210:
300: Shifting axis
400: guide shaft 410: handle fastening part
420: Starter 430: Handle
431: Handle
500: moving guide part 510: first fastening part
511: Transmission shaft fastening hole 512: First bearing
520: second fastening part 521: punch shaft fastening hole
522: second bearing 530: guide nut part
G10: First gear portion G20: Second gear portion
G1: first gear G2: second gear
G3: Third gear G4: Fourth gear
M: Drive motor PS: Power shaft

Claims (4)

A perforation shaft 200 extending in the vertical direction and coupled to a through-hole for perforating the water supply pipe at a lower portion thereof and rotatably installed inside the housing 100;
And is disposed inside the housing 100 so as to be rotatable along the perforation shaft 200 and has one end coupled to the power axis PS of the drive motor M by a first gear G10, A transmission shaft 300 coupled to the punch shaft 200 by the second gear portion G20;
A guide shaft 400 extending in the vertical direction and having a male thread on an outer circumferential surface thereof and being disposed in parallel with the perforation shaft 200 so as to be rotatable within the housing 100; And
A movement guide part 500 screwed with the guide shaft 400 so that the piercing shaft 200 is vertically transferred by rotation of the guide shaft 400;
Wherein the electric perforator for waterworks comprises:
The method according to claim 1,
The movement guide unit 500 includes:
A transmission shaft coupling hole 511 formed on the movement guide portion 500 so as to be concentric with the transmission shaft 300 and a first bearing 512 provided in the transmission shaft coupling hole 511, A first fastening part 510 configured to be fastened;
A drilling shaft fastening hole 521 formed on the movement guide unit 500 so as to be concentric with the drilling shaft 200 and a second bearing 522 provided on the drilling shaft fastening hole 521, A second fastening part 520 configured to be connected to the first fastening part 520; And
A guide nut portion 530 provided on the movement guide portion 500 so as to be concentric with the guide shaft 400;
Wherein the electric perforator for waterworks comprises:
The method according to claim 1,
The second gear portion G20 includes:
A third gear G3 coupled to the lower transmission shaft 300 of the movement guide unit 500; And
A fourth gear G4 coupled to the lower punch shaft 200 of the movement guide unit 500 to be engaged with the third gear G3;
Wherein the electric perforator for waterworks comprises:
The method according to claim 1,
On the upper portion of the housing 100,
Wherein a handle (430) coupled to an upper portion of the guide shaft (400) for rotating the guide shaft (400) is exposed to the outside of the housing (100).

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