KR200160470Y1 - Dustproof device of handle for hamma drill - Google Patents

Abstract

The present invention relates to an anti-vibration device for a hammer drill handle, wherein the end of the hammer drill body forms first to third fixing pieces in which a screw hole, a long hole, and a coupling hole are integral, and a bolt rod is integrated in the screw hole of the first fixing piece. Coupling the first dustproof member to which the hard rubber buffer material is bonded between the first steel sheet and the second steel sheet in which the fixed rod is integral, wherein the first dustproof member is coupled to the first connecting piece through a long hole of the fixed rod, and The second fixing piece is embedded in the insertion groove of the second connecting piece together with the second discharge member of the soft rubber to be fastened to the long hole by bolting, and the bolt hole of the third connecting piece is bolted to the coupling hole of the third fixing piece. The stable combination ensures that large vibrations are absorbed by the first vibration isolation means and small vibrations are absorbed by the second vibration isolation means at the engaging portion of the main body and the handle of the hammer drill. The vibrations generated during use of the drill to prevent a phenomenon that directly to the workers and give relieve operator fatigue.

Description

Dustproof device for hammer drill handles

The present invention relates to an anti-vibration device of a hammer drill handle, and in particular, a phenomenon in which a large vibration generated during the use of a hammer drill is directly transmitted by placing a vibration-proof means for cushioning vibration at a coupling portion of a main body and a handle of a hammer drill It relates to a dustproof device of the hammer drill handle to prevent the.

In general, the hammer drill is a well-known fact that it is possible to use a compressed air from the electric energy to hit the back of the drill with a cylinder while drilling or breaking a hole in a solid place such as a rock or concrete wall.

In addition, the hammer drill moves forward only without reciprocating when the cylinder hits the rear of the drill and excavates a hard place, so that the vibration is much vibration to the user performing the operation while holding the handle case of the hammer drill. This tended to be delivered.

Conventionally, as shown in FIG. 1, a rubber is placed between the fixing piece 5 of the hammer drill body 4 while positioning the fixing part 3 which bends the steel plate to the connecting part 2 of the handle case 1. A dustproof layer 6 of material is formed, and the dustproof layer 6 of the fixing part 3 and the fixing piece 5 and the handle case 1 of the main body 4 are combined and used with a bolt 7 have.

However, according to the above-mentioned dustproof device of the hammer drill handle, the handle case 1, the fixing part 3, the dustproof layer 6, and the fixing piece 5 of the main body 4 are bolted to the seventh. Since the vibration generated during the operation is reduced to some extent by the dustproof layer 6 of the fixing part 3 because it is in a combined state, most of the vibration is directly transmitted to the handle case 1 so that the worker who grabs and performs the work is operated by the vibration. Of course, the smooth progression of the difficult, as well as the additional fatigue during the work was a disadvantage.

Accordingly, the present invention places the first dust-proof means for buffering large vibrations and the second dust-proofing means for buffering small vibrations at the engaging portions of the main body and the handle of the hammer drill. It is an object of the present invention to provide a vibration isolator of a handle for a hammer drill that prevents a phenomenon of being directly transmitted to an operator.

The present invention for achieving the above object is integrally formed at the end of the hammer drill body integrally with the first fixing piece integral with the screw hole, the second fixing piece integral with the long hole and the third fixing piece integral with the coupling hole, respectively, A handle is installed on the handle case to which the first to third connecting pieces are coupled to the first to third fixing pieces so as to control an operating state through the switch, and the first steel plate and the second steel plate integrally formed with a bolt rod. A hammer drill body at a position closest to a drill not shown in the drawing to form a first dustproof member by adhering the cushioning material of the cylindrical hard rubber to be integrated therebetween, and forming the bolt rod formed on the first steel plate of the first dustproof member. The first connection piece while being coupled to the screw hole of the first fixing piece of the first coupling member and being inserted into the insertion groove formed in the first connection piece of the handle case. An insertion groove of the second connecting piece into which the second fixing piece which is formed by protruding to the outside is fastened to the hammer hole main body by being fastened by bolting to the long hole of the fixing rod formed integrally with the second steel plate through the bolt hole. The bolt hole of the second connecting piece is formed so that the space portion of a predetermined size is formed so that the second dust-proof member of the soft rubber is fitted tightly, while the bolt hole is coupled to the long hole of the second fixing piece with a bolt, the coupling of the third fixing piece The ball is configured to stably couple the bolt hole of the third connecting piece with a bolt so that large vibration is absorbed by the first dustproof means and small vibration is absorbed by the second dustproof means at the engaging portion of the main body and the handle of the hammer drill. This prevents the vibration that is generated during the use of the hammer drill to be directly transmitted to the worker and reduces the worker's fatigue. will be.

1 is a schematic view showing a part of the dustproof structure of a conventional hammer drill.

Figure 2 is an exploded perspective view of the main part of the present invention.

3 is a cross-sectional view of the coupling state of the present invention.

<Description of the symbols for the main parts of the drawings>

11: hammer drill body 12, 14, 16: fixed piece

13: screw hole 18: handle case

20: first connecting piece 21: second connecting piece

24: bolt rod 26: fixed rod

A: 1st dustproof member B: 2nd dustproof member

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

At the end of the hammer drill main body 11, the first fixing piece 12 in which the screw hole 13 is integral, the second fixing piece 14 in which the long hole 15 is integrated, and the third fixing piece 17 in which the coupling hole 17 is integrated. A handle case in which the fixing pieces 16 are integrally formed, and the first to third connecting pieces 20, 21 and 22 are coupled to the first to third fixing pieces 12, 14 and 16, respectively. 18, the switch 19 is installed to control the operation state, and the cylindrical hard between the first steel plate 23 and the second steel plate 25 in which the bolt rod 24 is integrally formed. The bolt hole 24 formed in the 1st steel plate 23 of the said 1st dustproof member A was formed by adhering the rubber cushioning material 27 so that it may be integrated, and the 1st dustproof member A is shown in figure. The first dustproof member A is coupled to the screw hole 13 of the first fixing piece 12 of the hammer drill main body 11 which is the position closest to the drill not being engaged. Of the insertion groove 20a formed in the connecting piece 20. As a bolt 30 to the long hole 28 of the fixing rod 26 formed to be integrally projected to the second steel plate 25 through the bolt hole 29 of the first connecting piece 20 while being inserted into the portion. A space portion 32 having a predetermined size is inserted into the insertion groove 31 of the second connecting piece 21 into which the second fixing piece 14 is inserted into and coupled to the hammer drill main body 11. ) Is formed so that the second dustproof member B of the soft rubber is fitted in close contact, and the bolt hole 33 of the second connection piece 21 is bolted to the long hole 15 of the second fixing piece 14. The coupling is coupled to (34), and the coupling hole 17 of the third fixing piece 16 is configured by stably coupling the bolt hole 35 of the third connecting piece 22 with the bolt 36.

The vibration isolator of the handle for hammer drill of the present invention configured as described above has the first fixing piece 12 having the screw hole 13 integrally with the second fixing piece having the long hole 15 integrally at the end of the hammer drill main body 11. The handle case 18 is connected to the first to third fixing pieces 12, 14 and 16 while the third fixing pieces 16 are integrally formed with the 14 and the coupling holes 17, respectively. The first to third connecting pieces 20, 21, 22 are to be coupled to each other, and the switch 19 is installed on the part of the handle case 18 in contact with the palm of the worker to easily turn on / While off, the power from the outside can be selectively supplied to control the operating state.

When the worker proceeds to crush or drill a rock or concrete wall while turning on the switch 19 of the handle case 18, the cylinder which is moved forward and backward by the compressed air in the hammer drill body 11 is drilled. Vibration occurs when the grille that hits the rear and moves only forward in a fixed position breaks or drills a hard place.

Since the vibration is most generated in the first fixing piece 12 of the hammer drill body 11, and then in the second fixing piece 14, and the least occurs in the third fixing piece 16, the handle case ( While the most vibration is transmitted to the first connecting piece 20 of 18), some vibration is transmitted to the second connecting piece 21 and vibration is hardly transmitted to the third connecting piece 22.

Therefore, the first dustproof member A is bonded between the first steel plate 23 and the second steel plate 25 in which the bolt rod 24 is integrally formed so as to be integral with the cushioning material 27 of the cylindrical hard rubber. A first fixing piece of the hammer drill body 11 formed at the position closest to the drill through which the vibration is most transmitted to the bolt rod 24 formed on the first steel plate 23 of the first dustproof member A. By fastening to the screw hole 13 of (12), it is made to absorb a vibration, acting as a buffer against big vibration, by the buffer material 28 of the hard rubber of the 1st dustproof member A. FIG.

In addition, the bolt hole 29 of the first connecting piece 20 in which the first dustproof member A is built is coupled to the long hole 28 of the fixing rod 26 by a bolt 30 to allow for some reciprocating movement. This acts as a buffer for the overall vibration.

On the other hand, the internal vibration portion 32 of the insertion groove 31 formed on the way of the second connecting piece 21 to which some vibration is transmitted is embedded so as to be fitted in close contact with the second vibration-proof member (B) of soft rubber To absorb the vibration transmitted through the second fixing piece 14 of.

The second connection piece 21 having the second vibration-proof member B of hard rubber is coupled to the long hole 15 of the second fixing piece 14 by a bolt 34 so as to be vibrated by reciprocating movement. It acts as a buffer.

Therefore, according to the vibration isolator of the hammer drill handle of the present invention, the end of the hammer drill body forms first to third fixing pieces in which a screw hole, a long hole, and a coupling hole are integral, and a bolt rod is integrated in the screw hole of the first fixing piece. Coupling a first discharge member to which a hard rubber buffer material is bonded between the first steel plate and the second steel plate in which the fixed rod is integrated, wherein the first dustproof member is coupled to the first connecting piece through a long hole of the fixed rod, and The second fixing piece is embedded in the insertion groove of the second connecting piece together with the second anti-vibration member made of soft rubber and is coupled to the long hole by bolting. The coupling hole of the third fixing piece bolts the bolt hole of the third connecting piece to the bolt. The stable combination ensures that large vibrations are absorbed by the first dust-proof means and operating vibrations are absorbed by the second dust-proof means at the engaging portion of the main body and the handle of the hammer drill. The vibration generated during the use of the hammer drill is prevented from being transmitted directly to the worker and reduces the worker's fatigue.

Claims (1)

At the end of the hammer drill main body 11, a third fixing piece 16 is formed in which first and second fixing pieces 12 and 14 and a coupling hole 17 are integral, respectively, and the first to third fixing pieces are fixed. Anti-vibration device of a hammer drill handle for engaging the first to third connecting pieces 20, 21, 22 of the handle case 18 in which the switch 19 is installed on the pieces 12, 14, 16. In the first steel plate 23 and the second steel plate 25 in which the bolt rods 24 are integrally bonded to each other so that the cushioning material 27 of the cylindrical hard rubber is integrally formed so as to be the first dustproof member A. And bolts 24 formed in the first steel plate 23 of the first dustproof member A to the screw holes 13 of the first fixing piece 12 of the hammer drill body 11. And the first dustproof member A is inserted into the insertion groove 20a formed in the first connecting piece 20 of the handle case 18 while being inserted into the bolt hole of the first connecting piece 20. To integrally protrude to the second steel plate 25 through a 29 The second connecting piece into which the second fixing piece 14 formed to protrude outwardly is coupled to the long hole 28 of the fixed rod 26 by a bolt 30 and is protruded to the outside of the hammer drill body 11. The insertion groove 31 of the 21 is formed so that the space portion 32 of a predetermined size is formed so that the second dustproof member B of the soft rubber is fitted in close contact, and the bolt hole of the second connection piece 21 33) is a dustproof device of the hammer drill handle, characterized in that the coupling is configured while fastening with a bolt (34) to the long hole (15) of the second fixing piece (14).