JP5539793B2 - Impact tool - Google Patents

Description

  The present invention relates to a striking tool that is used as a substrate adjustment tool that repeatedly strikes the surface with a striking tip such as a chisel to remove rust and coating on a metal surface or grind the surface.

  The striking tool is used as a substrate adjusting tool that repeatedly strikes the metal surface with a striking tip (needle chisel) such as a chisel and removes rust and coating on the metal surface. For example, when the tool is repainted to prevent corrosion of steel structures such as bridges, as described above, the tip impacting part (needle chisel) is repeatedly pushed forward or impacted by the reciprocating movable part as described above. Advance the metal surface repeatedly to remove rust and deteriorated coating on the surface.

  Such a substrate adjusting tool includes an electric type in which a movable part that repeatedly presses or strikes the tip hitting part is reciprocated instead of a reciprocating movement by an electric motor, and an air type that is reciprocated by pneumatic pressure. However, when heavy ground adjustment is required like a bridge, it requires a large striking force, so in the case of an electric type, it is 3 to 5 kg. Since more labor is required, the workability is inferior.

  Moreover, although it becomes comparatively lightweight in the case of an air type, it is necessary to bring in a heavy air compressor as a drive source at the site, and there was also a problem inferior in practicality.

  Some are driven by a suction force by a solenoid, but none generate a sufficiently strong striking force, and none are easy to use and can generate a striking force efficiently to reduce the weight.

Japanese Utility Model Publication No.59-176683 Japanese Utility Model Publication No. 64-34182

  The present invention solves such a problem, and although it is powered by electricity, it has a powerful striking force that can be used even in a wide site requiring heavy work such as a bridge, and the striking force is easy to use and efficient. It is an object of the present invention to provide an innovative striking tool that can be reduced in weight.

  The gist of the present invention will be described with reference to the accompanying drawings.

  The solenoid 1 includes a reciprocating mechanism 3 that reciprocates the movable part 2 by switching the attracting direction of the attracting force generated by the solenoid 1, and a tip striking part 4 that repeatedly strikes the surface by the reciprocating movement of the movable part 2. Are arranged in parallel with each other in the reciprocating direction of the movable portion 2, and a resultant attractive force is generated by combining the repulsive force generated by one solenoid 1 and the attractive force generated by the other solenoid 1. A suction part 5 made of a permanent magnet is provided in the movable part 2, and the direction of adsorption of the resultant attractive force generated in the suction part 5 made of the permanent magnet is reversed by reversing the polarity of the solenoids 1 arranged in parallel. Thus, the reciprocating mechanism 3 is configured to reciprocate the movable part 2, and the movable part 2 is moved in a direction in which the tip impacting part 4 is struck forward by the resultant force adsorption force. Those of the impact tool, characterized in that it comprises a blow-energizing elastic section 6 to energize.

  Further, a return elastic portion 7 for returning and urging the tip hitting portion 4 is provided, and the rear end portion of the tip hitting portion 4 that has returned is pressed or hit by the movable portion 2 advanced by the reciprocating mechanism 3. As a result, the tip impacting portion 4 pushes forward or strikes against the return elastic portion 7 and strikes the surface, and the tip impacting portion 4 returns by the return elastic portion 7 by the retreat of the movable portion 2. It is comprised so that it may move, It concerns on the impact tool of Claim 1 characterized by the above-mentioned.

  The movable portion 2 is provided with a striking action portion 9 that presses or strikes the rear end portion of the front end striking portion 4 at the front end portion of the movable shaft 8 and urges the rear end portion of the movable shaft 8 in the forward direction. The striking force-increasing elastic portion 6 is provided, and the solenoid 1 is arranged on the outer periphery of the movable shaft 8 in parallel with the length of the movable shaft 8 so as to be positioned between the solenoids 1. The impact tool according to any one of claims 1 and 2, wherein an adsorption portion 5 made of the permanent magnet is provided on an outer periphery of the movable shaft 8 of the solenoid 1.

  Further, a ring-type permanent where the intermediate point of the solenoids 1 arranged in parallel in the length direction of the non-magnetic movable shaft 8 constituting the movable part 2 coincides with the intermediate point of the movable shaft 8 in the length direction. The attracting portion 5 is constituted by a magnet, and the attracting portion 5 is fitted and fixed to the movable shaft 8 so that the repulsive force generated by the one solenoid 1 and the attracting force generated by the other solenoid 1 are generated in the same direction. Then, the resultant combined attractive force is applied to the attracting part 5 composed of the ring-type permanent magnet to move the movable part 2, and an AC voltage is applied to the solenoid 1 to change the polarity of both the solenoids 1. By reversing, the reciprocating mechanism 3 is configured to move the movable part 2 in the opposite direction and reciprocate. When the movable part 2 is retracted, the reciprocating mechanism 3 resists the impact-intensifying elastic part 6. Move, move forward The time in which according to the impact tool according to any one of claims 1 to 3, characterized by being configured so as to movable in energizing the return elastic force of the striking force increasing elastic portion 6.

  5. The cooling device 11 according to claim 1, further comprising a cooling device 11 that is driven by an alternating voltage applied to the solenoid 1 to cool the solenoid 1 and a yoke portion 10 provided on the solenoid 1. This relates to the striking device described in 1.

  Since the present invention is configured as described above, although it is powered by electricity, it has a powerful striking force that can be used even on a wide site requiring heavy work such as a bridge, and it is easy to use and generates a striking force efficiently. It becomes an epoch-making hitting tool that can also be reduced in weight.

  That is, it is not simply moved by the attracting force by the solenoid and reciprocated by reversing the polarity of the solenoid, but a pair of solenoids is provided and the attracting part that generates the attracting force between them is a permanent magnet, which is provided on the movable part. A combined force adsorbing force (attraction force) that combines the repulsive force and the adsorbing force is generated by the solenoid, and the repulsive force and adsorbing force of each solenoid combine to generate an increased combined force adsorbing force, and further this impact In some cases, elastic force is added to this increased resultant force attracting force (attraction force) to increase the force, so that it is possible to generate a powerful striking force efficiently while being lighter than conventional ones. It is an epoch-making impact tool that can work efficiently and with little effort even when adjusting the base material over a wide range of steel structures such as bridges.

  In the inventions of claims 2 and 3, the present invention can be realized with a simpler configuration, and the impact tool is more practical.

  Further, in the invention according to claim 4, a further excellent impact tool capable of generating a powerful striking force to which a strong resultant force adsorption force is generated and an elastic force is further added with a simpler structure. It becomes.

  In the invention according to the fifth aspect, the solenoid and the yoke portion can be efficiently cooled, and the impact tool is more practical.

It is schematic structure sectional drawing at the time of a hit | damage advance of a present Example. It is a schematic structure perspective view which notched a part at the time of hitting advance of a present Example. It is a schematic structure perspective view at the time of reversal of a movable part before hitting of a present Example. It is principle explanatory drawing of the reciprocation of a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  Since the attracting portion 5 that acts between the solenoids 1 arranged in parallel in the reciprocating direction of the movable portion 2 is composed of a permanent magnet, a repulsive force is exerted on the permanent magnet by one solenoid 1 and an attracting force is exerted on the other solenoid 1. An increased resultant force adsorption force (a pulling force) is generated.

  The resultant attracting force is generated (acted) on the permanent magnet (attraction part 5) provided on the movable part 2 to move the movable part 2 provided so as to be reciprocally movable. By reversing the direction, a pulling force in the reverse direction is generated, and the movable part 2 is moved in the reverse direction.

  That is, the pair of solenoids 1 simultaneously generate an attracting force (adsorption force is a repulsive force) that is sequentially reversed on the attracting portion 5 of the movable portion 2 by the magnetic force from both sides, and the movable portion 2 is reciprocated by the resultant attracting force. Thus, the surface is repeatedly hit by the tip hitting portion 4.

  Further, in order to increase this striking force, a striking force increasing elastic portion 6 is provided in the movable portion 2 and when the striking force is striking the surface by moving forward, the elastic force by the striking force increasing elastic portion 6 causes the resultant force adsorbing force (attraction force). ) To further increase the power.

  Specifically, the movable part 2 is moved backward by the resultant attractive force generated by the solenoid 1 against the impact-intensifying elastic part 6 (adsorptive force obtained by combining the attractive force by one and the repulsive force by the other), for example, by applying an AC voltage. Applied to the solenoid 1, the polarity of each solenoid 1 is automatically reversed by reversing the direction of the current periodically, and the movable part 2 is automatically retracted and then moved forward. In this case, the resultant force of both solenoids 1 In addition to the attracting force (the attracting force obtained by combining the attracting force by one and the repulsive force by the other), the return elastic force by the impact-strengthening elastic portion 6 is added to further increase the force.

  The tip impacting portion 4 may be provided directly on the reciprocating movable portion 2. For example, the rear end portion of the tip impacting portion 4 (needle chisel) at the tip portion (striking element) of the movable portion 2 that moves forward by increasing force. The base hitch 4 is repeatedly pressed or hit to repeatedly hit the tip hitting portion 4 against the work surface.

  Further, for example, if the return hitting portion 4 is provided with the return elastic portion 7, the tip hitting portion 4 also moves back every time the movable portion 2 moves backward, and the movable portion 2 moves forward again and the rear end of the tip hitting portion 4. Each time the portion is pressed or hit, the tip hitting portion 4 can advance forward or hit and hit the surface to adjust the surface.

  Further, by forming the attracting portion 5 of the movable portion 2 that generates this resultant attracting force with a strong permanent magnet, a more powerful impact force can be efficiently generated. In addition, as described above, for example, an AC voltage is applied to the solenoid 1 to automatically reverse the polarity, the yoke portion 10 is provided, and other structural designs for increasing the magnetic force can reduce the weight with a simple configuration. It is possible to generate a powerful striking force through efficient adsorption and repulsion with a strong magnetic force, and in particular, sufficient labor savings can be achieved and the work efficiency can be improved in the base preparation in the pretreatment for repainting repair of steel structures such as bridges. It will be a revolutionary striking tool that will improve.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, a yoke portion 10 is provided in which a coil (solenoid 1) wound via a bobbin is disposed in a wound state at the center of a main body case portion 12 serving as a gripping portion. A non-magnetic movable shaft 8 as the movable portion 2 is provided so as to be reciprocally movable, and the solenoid 1 is disposed on the outer periphery of the yoke portion 10 covering the movable shaft 8.

  In this embodiment, the solenoid 1 is provided on the outer periphery of the yoke portion 10, and the yoke 1 is connected to the yoke 1 so as to cover the outer periphery of the solenoid 1 through the cooling air gap 13 on the outer periphery of the solenoid 1. A main body case portion 12 is formed by forming an outer peripheral yoke portion 20 also serving as an outer peripheral portion.

  That is, the solenoid case 1 is covered with the outer yoke portion integrally with the central yoke portion 10 to form the main body case portion 12 serving as a gripping portion, and the outer yoke portion serving as the central yoke portion 10 and the outer peripheral portion of the case. A pair of solenoid housing portions surrounded by 20 and a continuous yoke portion 21 connected thereto and an intermediate yoke portion 15 to be described later are formed, and each solenoid 1 is disposed on the solenoid housing portion. A cooling device 11 that blows air to the solenoid 1 and cools it is provided in the end cap 18 at the end.

  This cooling device 11 drives the fan device 17 with a DC motor 16 that converts the AC voltage applied to the solenoid 1 into a DC voltage by a rectifier circuit and supplies power, and for example, takes outside air taken in from the rear through the cooling air gap 13. The air is sent to the solenoid 1 and the yoke portion 10 through the air and cooled, and the air is discharged from the discharge hole 14 provided in the outer peripheral portion of the case. Conversely, outside air may be introduced from an intake hole provided in the outer peripheral portion of the case and exhausted from behind.

  Further, a tool cap 19 is provided at the distal end portion of the main body case portion 12, and a distal end striking portion 4 made of a plurality of needle-shaped chisels is provided in the tool cap 19 so as to be reciprocally movable.

  In this embodiment, the resultant attractive force generated by the solenoid 1 (the pulling force including the pulling force and the like) is shown. In this embodiment, the proximity side has the same polarity as the polarity of the attracting portion 5 formed of a permanent magnet. The non-magnetic movable shaft by sequentially switching the adsorption direction of the repulsive force generated by the solenoid 1 and the attractive force generated by the solenoid 1 having a different polarity (which means a combined attractive force) by sequentially applying an AC voltage. The reciprocating mechanism 3 for reciprocating the movable part 2 constituted by 8 and the tip striking part 4 constituted by the needle-shaped chisel that repeatedly strikes the surface by the reciprocating movement of the movable part 2, and this movable shaft 8 The solenoid 1 wound around the yoke portion 10 covering the coil is provided in a state of being arranged in parallel with the movable portion 2 being separated in the reciprocating direction. Then, an adsorbing portion 5 made of a permanent magnet on which the resultant attractive force, which is a combination of the repulsive force and the adsorbing force due to the magnetic force of each solenoid 1, is provided on the outer periphery of the movable portion 2, and the polarity of the solenoids 1 arranged in parallel is set. The reciprocating mechanism 3 is configured to reciprocate the movable part 2 by reversing the suction direction of the resultant attractive force generated in the suction part 5 by periodically reversing it by applying an AC voltage.

  In this embodiment, the tool cap 19 is provided with a return elastic portion 7 for returning and urging the tip impacting portion 4, and the rear end portion of the tip impacting portion 4 that has moved back (a base provided with a needle-shaped chisel). Part) is struck or pressed by a striking action part 9 serving as a striking element at the tip of the movable part 2 advanced by the reciprocating mechanism 3 via a striking protection material, thereby resisting the return elastic part 7. Then, the tip impacting portion 4 strikes forward or presses forward to strike the surface, and the tip impacting portion 4 moves back by the return elastic portion 7 when the movable portion 2 moves backward.

  Specifically, the tip striking portion 4 is provided with the tip projecting into the tool cap 19 at the tip of the main body case portion 12, and the return elastic portion 7 adopting a coil spring in the tool cap 19 is provided. And the base end portion (base portion of the rear end portion) of the tip impact portion 4 is always urged in the backward direction, and the base end portion of the tip impact portion 4 returned by the return elastic portion 7 is The tip end portion (blow action portion 9) of the movable shaft 8 is configured to be pressed or hit through a hit protection material to advance the tip hit portion 4 (if the tip hit portion 4 follows smoothly). If you do not follow, you will hit.

  Further, as described above, the solenoid 1 is arranged on the outer periphery of the movable shaft 8 of the movable portion 2 in parallel with the length of the movable shaft 8 via the yoke portion 10, and the movable shaft 8 is reciprocated. In this embodiment, the yoke portion 10 through which the movable shaft 8 reciprocates is separated from the center of the main body case portion 12. At the same time, the solenoids 1 are wound around the separated yoke portions 10 so that the solenoids 1 are separated, and the permanent magnets are arranged so as to be located inside the solenoids 1. A portion 5 is provided on the outer periphery of the movable shaft 8 of the solenoid 1, and an intermediate yoke portion 15 provided with a ventilation hole is interposed between the solenoids 1 on the outer periphery of the adsorption portion 5.

  That is, in this embodiment, the attracting portion 5 provided on the outer periphery of the movable portion 2 is composed of a permanent magnet, and the resultant attracting force combining the repulsive force generated by the one solenoid 1 and the attracting force generated by the other solenoid 1 is combined. The movable part 2 is moved by acting on the suction part 5 composed of this permanent magnet, and the polarity of both solenoids 1 is reversed to move the movable part 2 in the opposite direction so as to reciprocate. The reciprocating mechanism 3 is configured. Specifically, the non-magnetic movable shaft is configured such that the attracting portion 5 is a ring-shaped permanent magnet, and one side of the reciprocating direction is an N pole and the opposite side is an S pole. 8 so that a movable force can be obtained from both the solenoids 1 arranged on the left and right sides of the permanent magnet.

  In other words, an alternating voltage is applied to the solenoids 1 arranged on the left and right so that the magnetic poles generated by changing the winding direction and the voltage direction are different, and the side of each solenoid 1 that is close to the permanent magnet. The repulsive force is generated by the solenoid 1 having the same polarity as that of the permanent magnet, and the attracting force is generated by the solenoid 1 having the opposite polarity, so that the movable force is obtained from both solenoids 1 at the same time. The increased resultant force adsorption force is always generated, and the polarity is automatically inverted by an AC voltage to control the adsorption force inversion.

  Thus, by making the attracting part 5 provided on the movable part 2 a permanent magnet that can simultaneously obtain a movable force (repulsive force or attracting force) from each solenoid 1, a strong resultant force attracting force is efficiently generated. It can be easily strengthened by adopting a strong one.

  In order to increase efficiency, the permanent magnet is ring-shaped, and is disposed inside the middle so that the middle point of the left and right solenoids 1 coincides with the middle point of the permanent magnet.

  Further, as described above, each solenoid 1 is surrounded by the yoke portion 10, the outer peripheral yoke portion 20 connected to the yoke portion 10, and the continuous yoke portion 21 connecting the same and the intermediate yoke portion 15, that is, each solenoid 1 is surrounded by them. The yoke is configured to be housed and disposed so that a strong resultant attractive force is generated efficiently while restricting the lines of magnetic force by the yoke portions.

  Further, as described above, a DC motor 16 that applies an AC voltage from the outside to the solenoid 1 via a cable and outputs a DC voltage via the rectifier circuit using the AC voltage, and a fan driven thereby. A cooling device 11 comprising a device 17 is provided in an end cap 18 at the rear end of the main body case portion 12 so as to blow air through the solenoid 1 and the yoke portion 10 provided thereon.

  Further, in the present embodiment, a striking force increasing elastic portion 6 is provided that biases the movable portion 2 in a direction in which the tip striking portion 4 is struck forward or pressed forward by a resultant suction force generated in the suction portion 5.

  In other words, the impact-strengthening elastic portion 6 that is urged in the forward direction is provided at the rear end portion of the movable shaft 8. When the movable portion 2 is retracted, the striking-strength elastic portion 6 is resisted. When it is moved and moved forward, it is configured to be further increased and moved by the return elastic force of the hitting force increasing elastic portion 6.

  Specifically, a space is provided in the central yoke portion 10 on the rear side to house a coil spring as the impact-increasing elastic portion 6, and the rear end portion of the movable shaft 8 reciprocates in this space. In this space, a coil spring that constantly urges the rear end portion of the movable shaft 8 forward is provided.

  Note that the present invention is not limited to the embodiments, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Solenoid 2 Movable part 3 Reciprocating mechanism 4 Tip impact part 5 Adsorption part 6 Elastic part for impact-intensification 7 Return elastic part 8 Movable shaft 9 Impact action part
10 Yoke part
11 Cooling device

Claims (5)

  A reciprocating mechanism that reciprocates the movable part by switching the adsorption direction of the adsorption force generated by the solenoid, and a tip striking part that repeatedly strikes the surface by the reciprocating movement of the movable part. An adsorbing part made up of a permanent magnet that is provided in parallel in the moving direction and generates a resultant adsorbing force, which is located between the solenoids and combines the repulsive force generated by one solenoid and the adsorbing force generated by the other solenoid, is movable. The reciprocating motion is performed so as to reverse the attracting direction of the resultant attracting force generated in the attracting portion constituted by the permanent magnet by reversing the polarity of the solenoids arranged in parallel and reciprocating the movable portion. A mechanism is provided, and a striking force-improving elastic portion that biases the movable portion in a direction of striking and advancing the tip striking portion by the resultant force adsorption force is provided. Impact tool which is characterized.   The return elastic portion is provided with a return elastic portion for returning and urging the tip hitting portion, and the return elastic portion is pressed or hit by the movable portion advanced by the reciprocating mechanism on the rear end portion of the tip hitting portion that has returned. The tip striking portion is configured to be configured so that the tip striking portion hits the surface by advancing or striking forward against the surface, and the tip striking portion is moved back by the return elastic portion by retreating the movable portion. Item 1. The impact tool according to item 1.   The movable portion is provided with a striking action portion that presses or strikes the rear end portion of the front end striking portion at the front end portion of the movable shaft, and the elastic portion for striking force that urges the rear end portion of the movable shaft in the forward direction. The solenoid is arranged on the outer periphery of the movable shaft in parallel with the length of the movable shaft, and the adsorbing portion composed of the permanent magnet is positioned between the solenoids. The impact tool according to claim 1, wherein the impact tool is provided on an outer periphery of the movable shaft.   The attracting portion is made of a ring-type permanent magnet in which an intermediate point of the solenoids arranged in parallel in the length direction of the non-magnetic movable shaft constituting the movable portion coincides with an intermediate point in the length direction of the movable shaft. The adsorbing portion is fitted and fixed to the movable shaft, and a repulsive force generated by the one solenoid and an adsorbing force generated by the other solenoid are generated in the same direction, and the resultant combined adsorbing force is combined with the ring. The movable part is moved by acting on an attracting part composed of a permanent magnet, and the movable part is moved in the opposite direction by reversing the polarity of both solenoids by applying an AC voltage to the solenoid. The reciprocating mechanism is configured to drive, and when the movable portion is moved backward, it is moved against the impact-intensifying elastic portion, and when it is advanced, the return elasticity by the impact-intensifying elastic portion. The impact tool according to any one of claims 1 to 3, energizing to be characterized by being configured so as to movable by.   The striking device according to any one of claims 1 to 4, further comprising a cooling device that is driven by using an alternating voltage applied to the solenoid to cool the solenoid and a yoke portion provided on the solenoid.

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