KR20100105020A

KR20100105020A - Electric ring hammer

Info

Publication number: KR20100105020A
Application number: KR1020090023806A
Authority: KR
Inventors: 석진
Original assignee: 석진
Priority date: 2009-03-20
Filing date: 2009-03-20
Publication date: 2010-09-29

Abstract

PURPOSE: An electric ring hammer device is provided to improve the hammering speed of the beating ring hammer due to the increased rpm of a motor. CONSTITUTION: An electric ring hammer device comprises a biaxial motor(1), a beating ring hammer driving arm(5), and a hammer drive unit(100). The beating ring hammer driving arm is connected to the shaft(2) of the biaxial motor. The beating ring hammer driving arm comprises a beating ring hammer(60), a pair of guide members(70'), a pair of horseshoe-shaped guide members(40,90), a pressure-reduction spring housing(30), and a pressure reduction end cap(9). The beating ring hammer converts the rotational motion of the beating ring hammer driving arm into the linear reciprocating motion. The guide members guide the linear reciprocating motion of the beating ring hammer. One of the horseshoe-shaped guide members are coupled with a beater(61) of the beating ring hammer via a through-hole(91). The pressure reduction spring housing is coupled with a contact member via a through hole(41) of the other horseshoe-shaped guide member. The pressure reduction end cap is connected to the pressure reduction spring housing with a pressure reduction screw(8).

Description

Electric ring hammer

The present invention relates to an electric ring hammer, and more particularly, to an electric ring hammer that can easily convert the driving force of the motor into a strike force.

The sealing device of the electric hammer drill of the Republic of Korea Publication No. 20-1999-0034616 has a built-in elastic body to maintain a constant outer diameter by tension in the decompression spring housing installed inside the chuck body, the inner diameter of the chuck body and the decompression spring An oil seal for sealing between the outer diameter of the housing is characterized in that it is inserted.

The hinge pin fixing method of the retainer for preventing the drill bit dropping of the electric hammer drill of the Republic of Korea Registration No. 10-0150708 is to connect the hinge pins to the retainer to prevent the drill bit from falling off of the electric hammer drill. A ring-shaped copper is inserted into a hinge pin that is forced into and protrudes inwardly and contacts the inner surface of the retainer. Then, the ring-shaped copper is melted in a furnace at 1094 to 1149 ° C for about 10 to 15 minutes, and the molten copper is interposed between the hinge pin and the hole of the retainer. It is characterized by cooling after forming an adhesion layer by infiltrating by the principle of osmotic pressure into a fine gap of.

Electric hammer with a separate operation switch and handle of the Republic of Korea Publication No. 20-2000-0017785 is an electric hammer that is connected to the gear case and the decompression spring housing to form a handle. The operation piece of the lever is inserted, and a fixing hole is formed on the upper side of the long hole so that the locking projection seal of the switch lever is fixed, and a toggle rib is formed on the inner side of the pressure reducing spring housing to fix the toggle switch. It is done.

The nailing structure and device of the electric hammer of the Republic of Korea Registration No. 10-0353199 is a structure that allows the separation of the holding rod and the double cylindrical strut, and the hammer core rod inserted into the separating holding rod, and the end hitting the nail at right angles. At the same time, the hammer mandrel hits the nail and the nail is inserted into the target and the double circular strut made of steel is the same as the striking principle. It is characterized by consisting of a double cylindrical strut made of steel surrounding the spring.

The hammer of the electric hammers combined with the seal of the Republic of Korea Publication No. 20-2000-0017786 is located inside the cylinder and the hammer of the electric hammers hitting the middle man by the linear reciprocating motion of the hammer A groove is formed in the periphery of the ring to tighten the O-ring, and an outer ring of the O-ring is formed of a polyether ether kenton-based resin with a sealing material made of engineering plastics in which carbon fiber, polytetraproethylene, and minerals are mixed in an appropriate amount. It is characterized by forming a close contact portion projecting by a certain height around the outer peripheral center of the seal, and forming protrusions at both ends of the seal.

The sealing device of the electric hammer drill published in the Republic of Korea Publication No. 20-1999-0034616 is to maintain the outer diameter in a constant shape by tension in the pressure-sensitive spring housing installed inside the chuck body, Republic of Korea Registration No. 10-0150708 The hinge pin fixing method of the retainer for preventing the drill bit dropping of the electric hammer drill disclosed in the Korean Patent No. 1 is a technique for preventing the drill bit dropping of the electric hammer drill, and the operation switch disclosed in Korean Publication No. 20-2000-0017785. The electric hammer separated from the handle is a technology that allows the toggle switch to be conveniently turned on and off by forming a pair of operating pieces at the lower side of the fixing hole.

In addition, the nailing structure and device of the electric hammer posted in the Republic of Korea Registration No. 10-0353199 is a technology that allows you to perform a large amount of work easily, conveniently and quickly wherever nailed, Republic of Korea Publication No. 20-2000 The hammers of electric hammers combined with seals published in -0017786 eliminate the tearing of the O-rings that pass through the air intake when the striker reciprocates in the cylinder.

Therefore, an object of the present invention is to provide an electric ring hammer capable of performing a linear motion on the axis of the motor by converting the striker to the linear motion in accordance with the rotational movement of the central axis of the rotor.

In order to achieve the above object, the electric ring hammer according to the present invention comprises a two-axis motor having a shaft; and. A striking ring hammer drive arm engaged with the shaft of both shaft motors; a striking ring hammer having a striking member and engaged with the striking ring hammer drive arm to convert rotational movement of the striking ring hammer drive arm into linear reciprocating motion; A pair of guide members for guiding the linear reciprocating motion of the striking ring hammer on both sides of the hammer, a pair of other guides in the form of horseshoe placed before and after the striking ring hammer, and the other pair of Among the horseshoe-shaped guide members, the other guide member engages with the striking member of the striking ring hammer through its through hole, and engages with the contact member through the through-hole of one guide member of the other pair of horseshoe-shaped guide members. Decompression spring housing; And a hammer drive device having a decompression end cap coupled to the decompression spring housing by a decompression screw, with a decompression pin and a decompression spring inserted into the hollow portion of the decompression spring housing.

In addition, the striking ring hammer drive arm includes a first striking ring hammer drive arm member having a circular space portion into which a shaft is inserted and a square space portion into which a shim is inserted, a driving arm elastic spring, and first and second inner grooves at its central portion. A second hammer ring hammer drive arm member which is continuously provided so that the drive arm friction pad of the second hammer ring hammer drive arm member and the ring hammer friction pad of the inner surface which abuts with the space portion of the hammer ring hammer are engaged with each other. do.

Furthermore, after engaging the striking ring hammer drive arm with the shaft, the striking ring hammer guide base plate is characterized by being attached to and fixed to both shaft motors through the respective shafts of the two shaft motors.

In particular, after the hammer drive device is attached and secured on the base plate, the protective cover is attached and secured to the hammer drive device by fastening members through its fastening holes.

According to the electric ring hammer according to the present invention, the structure is simple and the production cost can be produced at low cost.

Aha, the configuration of the electric ring hammer according to the present invention and the action exerted by it according to the accompanying drawings will be described in detail.

1 is an assembled cross-sectional view of an electric ring hammer according to the present invention.

As shown in FIG. 1, the electric ring hammer according to the invention comprises a biaxial motor 1. The biaxial motor 1 is a motor having two shafts 2. The biaxial motor 1 is equipped with a biaxial motor drive. The two-axis motor 1 has a rating such as a right ascension worm gear hole dimension, a declination worm gear hole dimension, a motor drive: stepping motor, a rotation speed, and the like, and this rating may be selected to be suitable for the electric ring hammer according to the present invention.

The striking ring hammer drive arm 5 is also fitted in the two shafts 2 of the biaxial motor 1 and is shim (not shown) in the space formed between the striking ring hammer drive arm 5 and the shaft 2. Is tightly adhered to the shaft (2).

After the shaft 2 and the striking ring hammer drive arm 5 are engaged with each other, the striking ring hammer guide base plate 3 passes through the two shafts 2 of the two-axis motor 1 and attaches to the two-axis motor 1, respectively. And fixed to both shaft motors 1 by fastening members (not shown) through their fastening holes (not shown). After the striking ring hammer guide base plate 3 is attached and fixed to the biaxial motor 1, the hammer drive device (to be described later in FIG. 2) is fastened to the fastening member (not shown) through their fastening holes (not shown). ), The striking ring hammer guide base plate 3 is attached and fixed. After the hammer drive device is attached to the striking ring hammer guide base plate 3, the protective cover 4 is attached to the hammer drive device by a fastening member (not shown) through its fastening holes (not shown). It is fixed.

2 is an exploded plan view of the electric ring hammer according to the invention.

3 is an exploded perspective view of a hammer driving device of the electric ring hammer according to the present invention.

2 and 3, the hammer drive device 100 is positioned between the striking ring hammer guide base plate 3 and the protective cover 4, respectively.

The hammer drive device 100 includes a pressure reducing pin 10. The decompression pin 10 consists of a decompression part 11, a spring coupling part 13, and a locking step 12 positioned between the decompression part 11 and the spring coupling part 13.

As the spring coupling part 13 of the decompression pin 10 is wrapped, it is inserted into the spring coupling part 13 of the decompression pin 10 until the decompression spring 20 is caught by the latching jaw 12 of the decompression pin 10. The decompression pin 10 and the decompression spring 20 are combined. Then, the spring coupling portion 13 of the decompression spring 20 and the decompression pin 10 is inserted into the hollow portion 31 of the decompression spring housing 30 in a state where the decompression pin 10 and the decompression spring 20 are coupled to each other. . The hollow part 31 of the pressure reduction spring housing 30 is formed in the center part of the pressure reduction spring housing 30. With the decompression pin 10 and the decompression spring 20 inserted into the hollow portion 31 of the decompression spring housing 30, the decompression end cap 9 is inserted into the hollow portion 31 of the decompression spring housing 30. The upper portion of the decompression spring housing 30 with the decompression end cap 9 and the decompression end cap 9 and the decompression end cap 9 and the decompression spring housing 30. The decompression pin 10 and the decompression spring 20 are confined between the hollow portions 31.

In addition, the pressure-sensitive spring housing 30 is provided with a stepped fitting portion 32.

The hammer drive device 100 includes a first guide member 40 in the form of a horseshoe. The first guide member 40 has a first through hole 41. The fitting portion 32 of the decompression spring housing 30 is formed by the first guide member 40 while the decompression pin 10 and the decompression spring 20 are received into the hollow portion 31 of the decompression spring housing 30. It is inserted into and fitted into the first through hole 41. A female screw (not shown) is formed inside the fitting portion 32 of the pressure-sensitive spring housing 30.

The contact member 50 is composed of a head portion 51 having a diameter larger than the diameter of the first through hole 41 of the first guide member 40 and a screw portion 52 integrated with the head portion 51.

Therefore, when the threaded portion 52 of the contact member 50 is engaged with the female screw of the fitting portion 32, the pressure-sensitive spring housing 30, the first guide member 40, and the contact member 50 are coupled to each other.

As a result, in the state where the pressure-sensitive spring housing 30, the first guide member 40, and the contact member 50 are coupled to each other, the pressure-sensitive spring housing 30 is formed in the first through hole 41 of the first guide member 40. It is possible to move by the length of its fitting portion 32 in the). In other words, the decompression spring housing 30 can move by the length of its fitting 32.

The hammer drive device 100 has an elliptical strike ring hammer 60. An inner central portion of the striking ring hammer 60 is formed with a space portion 63 of the long hole. And the striking ring hammer 60 is provided with the striking body 61 integrated in the center of the rounding part.

Furthermore, the striking ring hammer 60 has a ring hammer friction pad 62 at the straight portion of the inner side which is in contact with the space 63 thereof.

Similarly to the first guide member 40, the second guide member 90 includes a second through hole 91 in the center thereof.

The striking member 61 of the striking ring hammer 60 is inserted into and penetrated into the second through hole 91 of the second guide member 90. Accordingly, the striking member 61 of the striking ring hammer 60 penetrates through the second through hole 91 of the second guide member 90 to protrude outward.

On the other hand, the striking ring hammer drive arm 5 as shown in FIG. 4 is inserted into the shaft 2 of the biaxial motor 1, respectively, through a through hole (no reference number) formed at the center thereof, The shim 102 is embedded in the space formed between the shaft 5 and the shaft 2 so as to be tightly attached to and fixed to the shaft 2. Thus, the striking ring hammer drive arm 5 also rotates in accordance with the rotation of the shaft 2 of the double shaft motor 1. At this time the rotation of the striking ring hammer drive arm 5 takes place in the space 63 of the striking ring hammer 60.

The striking ring hammer drive arm 5 comprises first and second striking ring hammer drive arm members 102 and 103 of semi-circular shape as shown in FIG. 4. The central portion of the first striking ring hammer drive arm member 102 has a circular space portion (no reference number) into which the shaft 2 is to be inserted and a rectangular space portion (no reference number) into which the shim 102 is to be inserted. . And the 2nd hitting ring hammer drive arm member 103 is provided with the 1st and 2nd inner grooves 106 and 107 continuously. Thus, the first inner groove 106 of the second striking ring hammer drive arm member 103 accommodates the driving arm elastic spring 105 and the first striking ring hammer drive arm member 102 so as to receive the first striking ring hammer drive arm member. 102 and the second strike ring hammer drive arm member 103 are engaged.

The second striking ring hammer drive arm member 103 also has a drive arm friction pad 104 at its rounded portion. Therefore, when the driving ring hammer drive arm 5 rotates, the driving ring hammer drive arm 5 because the driving arm friction pad 104 and the ring hammer friction pad 62 of the hitting ring hammer 60 are brought into contact with each other. In accordance with the rotation of the hammer ring hammer 60 is moved in a straight direction which is a direction orthogonal to the axis (2). Thus, the striking member 61 of the striking ring hammer 60 strikes a predetermined object while reciprocating outside of the second through hole 91 of the second guide member 90.

The hammer drive device 100 has third and fourth guide members 70 and 70 '.

The third and fourth guide members 70 and 70 'are provided with corresponding third and fourth stepped portions 71 and 71', respectively. That is, the third guide member 70 includes a third stepped portion 71 and the fourth guide member 70 'includes a fourth stepped portion 71'.

The bottom surface of the straight portion of the striking ring hammer 60 is placed on the third stepped portion 71 'of the third guide member 70 and the fourth stepped portion 71' of the fourth guide member 70 'so that the striking ring The bottom surface of the straight portion of the hammer 60 is moved on the third stepped portion 71 'of the third guide member 70 and the fourth stepped portion 71' of the fourth guide member 70 '. As a result, the third and fourth guide members 70 and 70 'guide the linear motion of the striking ring hammer 60.

If power is supplied to both shaft motors 1 and both shaft motors 1 rotate, the impact ring hammer drive arm 5 coupled with the shaft 2 of the two shaft motors 1 rotates. The ring hammer friction pad 62 of the striking ring hammer 60 through the drive arm friction pad 104 of its second striking ring hammer drive arm member 103 as described above while the striking ring hammer drive arm 5 rotates. In contact with the driving arm friction pad 104 of the second hitting ring hammer drive arm member 103 and the ring hammer friction pad 62 of the hitting ring hammer 60 are engaged with each other, so that the hitting ring hammer drive arm 5 Rotational motion is converted into a linear reciprocating motion by the striking ring hammer 60. Thus, the striking member 61 of the striking ring hammer 60 strikes a predetermined object. In the case of striking the striking hammer and the striking ring hammer 60 moves backward, the striking ring hammer 60 is a pressure reducing spring housing 30. It hits while contacting the contact member 50 coupled with the fitting portion 32 of the. As a result, the decompression spring housing 30 performs the backward movement. However, since the decompression spring housing 30 can move by the length of its fitting portion 32, the decompression spring housing 30 rebounds by the restoring force of the decompression spring 20, and moves forward again. Thus, the contact member 50 engaged with the fitting portion 32 of the spring housing 30 is pushed forward again to come into contact with the striking member 61 of the striking ring hammer 60 so as to rotate the ring hammer drive arm 5. Regardless, the striking ring hammer 60 is moving forward. As a result, the striking force 61 of the striking ring hammer 60 can strike a predetermined object by the restoring force of the decompression spring 20.

This is related to the rotational speed of the biaxial motor 1. In other words, the faster the rotational speed of the two-axis motor 1 is, the faster the linear reciprocating motion of the striking ring hammer 60 is, so that the speed of striking applied to a predetermined object is also faster.

4 is an exploded cross-sectional view of the striking ring hammer drive arm of the electric ring hammer according to the invention.

&Lt; Brief Description of Drawings &

3: hammering ring hammer guide base plate 4: protective cover

5: blow ring hammer drive arm 8: decompression screw

9: decompression end cap 10: decompression pin

20: decompression spring 30: decompression spring housing

31: hollow part 32: fitting part

40: first guide member 41: first through hole

50: contact member 60: blow ring hammer

61: hitter 62: ring hammer friction pad

70, 70 ': Third and fourth guide members 71, 71': Second and third stepped portions

90: second guide member 91: second through hole

100 hammer drive device 101 first blow ring hammer drive arm member

103: second hitting ring hammer drive arm member 104: drive arm friction pad

105: Driving Arm Elastic Coil Spring

Claims

Both shaft motors (1) having a shaft (2); and

A striking ring hammer drive arm 5 engaged with the shaft 2 of both shaft motors 1; and

A striking ring hammer 60 having a striking member 61 and engaged with the striking ring hammer drive arm 5 to convert the rotational movement of the striking ring hammer drive arm 5 into a linear reciprocating motion, and a striking ring hammer 60 A pair of guide members 70, 70 'for guiding the linear reciprocating motion of the striking ring hammer 60 on both sides of the pair and another pair of horseshoe placed before and after the striking ring hammer 60 The guide members 40, 90 in the form, and here, among the other pair of horseshoe-shaped guide members 40, 90, the other guide member 90 strikes through its through hole 91. The contact member is engaged with the striking member 61 of the ring hammer 60 and through the through-hole 41 of one of the guide member 40, 90 of the other pair of horseshoe-shaped guide member 40, 90 A pressure-sensitive spring housing 30 that engages with 50; A pressure reducing end cap coupled to the pressure reducing spring housing 30 by the pressure reducing screw 8 while the pressure reducing pin 10 and the pressure reducing spring 20 are inserted into the hollow portion 31 of the pressure reducing spring housing 30 ( Hammer drive with 9)

Electric ring hammer, characterized in that it comprises (100).

The method of claim 1,

The striking ring hammer drive arm 5 has a first striking ring hammer drive arm member 102 having a circular space portion into which its shaft 2 is to be inserted and a rectangular space portion into which the shim 102 is to be inserted; The 2nd striking ring hammer drive arm member 103 which consists of the arm elastic spring 105 and the 2nd striking ring hammer drive arm member 103 provided with the 1st and 2nd inner grooves 106 and 107 continuously. And the ring hammer friction pad (62) on the inner side which abuts the drive arm friction pad (104) and the space portion (63) of the striking ring hammer (60).

The method of claim 1,

After engaging the striking ring hammer drive arm (5) with the shaft (2), the striking ring hammer guide base plate (3) passes through both shafts (2) of the two-axis motor (1), respectively, and is attached to the two-axis motor (1). An electric ring hammer, characterized in that fixed.

The method of claim 1,

After attaching and fixing the hammer drive device 100 on the base plate 3, the protective cover 4 is attached to the hammer drive device by means of fastening members through its fastening holes. hammer.