JP3188106U - Tip tool for hand-held actuator installation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an electric compaction work using the same principle as a mold hammering operation with a mallet without purchasing a dedicated electric tool for compacting concrete. Provided is a tip tool 100 for mounting a hand-held actuating device (lightweight hammer drill). SOLUTION: This is a tip tool including a striking portion 110 on the tip side, a mounting portion 130 on the rear end side, and a main body portion 120 connecting the two, and the tip surface of the striking portion 110 has a diameter of 30 to 60 mm. A circular flat striking surface 111 is provided, and an SDS-plus-shaped shank 131 that can be mounted on a hand-held operating device is provided on the mounting portion 130. [Selection diagram] Fig. 1

Description

  The present invention relates to a tip tool that can be mounted on a hand-held actuator that is a general-purpose electric device used in a construction site.

  In general construction methods of concrete buildings, in order to maintain the shape until the concrete is solidified, temporary equipment called formwork is assembled using veneer and piers, and concrete is poured into the formwork for a predetermined time. After curing, demold. At this time, the formwork is fixed by providing a plurality of vertical and horizontal laterally spaced apart at predetermined intervals so that the formwork does not swell or be damaged by the side pressure into which concrete is poured.

  It is called a junker (sometimes called a bean plate) that causes concrete to become brittle when a void is generated in the concrete pouring work in which the concrete is poured, and the mortar and coarse aggregate are separated and the concrete is not stuck. As a result of the occurrence of concrete defects, the concrete strength is significantly reduced. When a jumper is generated, water easily flows from the location and leaks. As a result, the reinforcing bars and steel frames rust, and the concrete peels off and causes a large crack (crack).

  In order to prevent the occurrence of such jumpers, for many years, workers hit the concrete formwork with a wooden mallet through a frame surrounded by vertical and horizontal planes. The compaction work was done by striking and vibrating the concrete placed on the wall.

  However, after all, the compaction work by hitting with a wooden mallet has a problem that the operator must work by manually vibrating the formwork, and the work efficiency cannot be improved.

  In addition, in order to strike a concrete formwork with a mallet, the mallet to be used must have an appropriate weight. The diameter of the hammering surface of such a mallet with a moderate weight is generally 50-60 mm. For this reason, when the vertical and horizontal gaps are narrower than the diameter of the hammering surface of the mallet, it is not possible to hit the concrete formwork directly, and there is a problem that a jumper is created at that location. It was.

  As a compaction technique that does not use a wooden mallet, for example, as shown in Patent Document 1 below, a concrete compaction mold strike that can give a uniform blow to the concrete that is driven into the mold As shown in Patent Literature 2 below, there are air hammers that are used for compacting concrete by applying vibration to a concrete formwork.

Japanese Patent Laid-Open No. 8-151796 JP 2000-271877 A

  In the case of a concrete compaction tool hitting tool disclosed in Patent Document 1 or an air hammer disclosed in Patent Document 2, instead of compacting with a wooden mallet that uses human power, an electric dedicated tool is used. It may be possible to improve work efficiency by electrifying the compaction work by hitting or pushing the formwork.

  However, the concrete compacting tool for concrete compaction disclosed in Patent Document 1 and the air hammer disclosed in Patent Document 2 are dedicated electric tools for performing compaction work. Since the dedicated electric tool has to be purchased only to perform the work, the cost required for the compacting work is increased as compared with the compaction using the mallet.

  Furthermore, the compaction using the dedicated electric tool has a problem that it is very inconvenient when the dedicated electric tool is carried to the work site because the dedicated electric tool is heavier than the wooden fence.

  Therefore, the problem to be solved by the present invention is to provide a tip tool that can be used like a mallet instead of a mallet without purchasing a dedicated electric tool for compaction work. .

The present invention is a tip tool for mounting a hand-held actuator comprising a front end impacting portion, a rear end mounting portion, and a main body portion connecting the impacting portion and the mounting portion,
The tip surface of the hitting portion is a circular flat hitting surface, the hitting surface has a diameter of 30 to 60 mm, and the mounting portion includes a shank that can be attached to a hand-held operating device. The main feature is that the shank is SDS-plus.

  According to the tip tool of the present invention, since the mounting portion includes a shank that can be mounted on a hand-held actuator, and the shank is an SDS-plus standardized by Bosch, the SDS-plus is adopted. A tip tool can be detachably mounted on a general-purpose hand-held actuator. If the concrete compaction work is performed by the hand-held actuator equipped with the tip tool of the present invention, the worker can work much more easily than the compaction work by hitting with human power.

  Further, according to the tip tool of the present invention, the tip surface of the hitting portion is a circular flat hitting surface and the hitting surface has a diameter of 30 to 60 mm. When performing the compacting operation, the striking portion can be easily inserted into the frame surrounded by the vertical and horizontal planes. In addition, using the striking surface of the striking part through the frame surrounded by the vertical and horizontal flats, as with conventional wooden mallet, it strikes and strikes the formwork. It has the advantage that electric compaction can be performed on the same principle.

  Further, in the impact mode of the hand-operated actuator equipped with the tip tool of the present invention, it is possible to perform a powerful impact operation with a much shorter cycle compared to the impact by the manpower using the mallet. This makes it possible to use a hand-held actuator equipped with the tip tool of the present invention, for example, for a concrete formwork where the vertical and horizontal gaps are narrow, which was difficult with conventional compaction of a wooden mallet. It is possible to perform compaction work by hitting even from the top of the supporting pier, and since the concrete nodule turns, it is even less likely that jumpers will be generated due to slamming.

  The hand-operated operating device itself is a general-purpose electric tool used for various purposes in a construction site. Since such a hand-held operating device that is indispensable in a construction site has been brought into the construction site conventionally, it is possible to start the compacting operation only by adding the tip tool of the present invention. For this reason, the cost required for the compacting operation can be greatly reduced as compared with the case where a dedicated electric tool set is purchased and compacted only for performing the compacting operation as in the prior art. As a result, it has the advantage that it can be made much more economical than before.

  In addition, since the tip tool of the present invention is separate from the hand-held actuator, if the hand-held actuator is already brought into the work site, the tip tool must be Since it is only necessary to carry it to the work site, it is possible to eliminate the inconvenience and troubles of the operator due to carrying compared to the case of carrying a set of dedicated electric tools to the work site.

It is a figure showing a tip tool concerning the present invention. (A): Side view, (b): Rear view It is arrow sectional drawing of the AA line shown to Fig.1 (a). It is a side view which shows the external appearance of the hand-held type operating device with which the tip tool was mounted | worn. It is a figure which shows the other aspect of the tip tool which concerns on this invention. (A): Side view, (b): Rear view

  Hereinafter, the present invention will be described with reference to the drawings. However, the present invention is not limited to the mode shown in the drawings.

(Overview of the tip tool)
The tip tool 100 referred to in the present invention refers to a tool that can be detachably attached to the tip of a hand-held actuator 200 that is a general-purpose electric tool used in various construction applications at a construction site. . Detachable means that attachment to the handheld actuator 200 or removal from the handheld actuator 200 is free. As shown in FIG. 3, the hand-held operating device 200 to which the tip tool 100 of the present invention is attached can be suitably used for compaction work applications in which concrete is struck and vibrated. Compaction refers to an operation of impacting concrete indirectly through a mold in order to prevent the occurrence of jumpers in the concrete placed in the mold.

  An outline of the tip tool 100 of the present invention is shown in FIGS. FIG. 4 shows an outline of another aspect of the tip tool 100 of the present invention. The tip tool 100 of the present invention includes a striking portion 110, a main body portion 120, and a mounting portion 130. The material of the tip tool 100 can be used without particular limitation as long as it is a metal used in a general tool such as steel or alloy steel. The main body portion 120 and the mounting portion 130 may be an integrally molded product.

(Handheld actuator)
The hand-held actuator 200 is a general-purpose electric device essential at a construction site, such as a lightweight hammer drill that adopts SDS-plus (not shown for violation of public order and morals). It is a device that can be equipped with various types of tip tools. In the hand-held operating device 200 used with the tip tool 100 of the present invention, it is preferable that it can be used at least in the impact mode for the purpose of use. The hand-held operating device 200 is a device that can deal with various work on the construction site by replacing the tip tool. For example, if a tip (not shown for violation of public order and morals) is attached to the tip as a tip tool,・ Can handle grooving and cornering, etc. (not shown for violations of public order and morals) can be used as a tip tool to handle tile stripping. Also, even in the work of drilling air holes necessary for concrete placing work, if a wooden drill is attached as a tip tool, it is not necessary to prepare a separate drill tool. If the tip tool 100 of the present invention is attached, it is possible to cope with compaction work by hitting concrete.

  Furthermore, in the relatively small hand-held operating device 200 adopting SDS-plus, there is a battery charging type device that does not require direct 100 V power supply, such as (not shown for public order and moral violation). To do. If the tip tool 100 of the present invention is attached to such a battery-charged hand-held actuator 200, work can be performed without stress even in places where the extension cord is difficult to route due to, for example, a post or a support work. The work efficiency can be greatly improved. Of course, in the field where the working time greatly exceeds the operation time of the battery, it may be used in combination with the conventional hand-held operation device 200 of the type that directly supplies 100V power.

(Striking part)
The striking portion 110 is a portion of the tip tool 100 on the tip side of the tip tool 100. The striking surface 111 is a surface that actually participates in the striking on the concrete mold, and is a surface on which concrete can be bumped indirectly through the mold. A concrete formwork means a formwork in which concrete is cast. The formwork that comes into contact with the striking face 111 receives the striking force of the hand-held actuator 200 via the striking face 111, so that the formwork vibrates and the concrete concrete inside starts to fill the gap. .

  The striking surface 111 has a circular planar shape. By adopting the circular flat shape, the impact of the impact is easily applied to the mold that is in contact with the impact surface 111, so that it is easy to rotate the concrete. Furthermore, in the tip tool 100 of the present invention that repeats a powerful impact with a short cycle, there is less risk of damage compared to a case where the impact surface is a polygon or the like, and the impact portion 110 is formed at the end of the compacting operation. When separated from the frame, there is little risk of getting caught in the vertical or horizontal plane.

  The diameter of the striking face 111 in the tip tool 100 of the present invention is 30 to 60 mm. If the diameter is less than 30 mm, the area for hitting the formwork is too small, and efficient compacting work cannot be performed. On the other hand, when the diameter exceeds 60 mm, the vertical and horizontal sides are obstructed, and the number of cases in which the concrete formwork cannot be directly impacted increases, and the impact force is widely dispersed, so that a strong impact cannot be achieved. Compared to the embodiment of FIG. 1 according to the present invention, the embodiment of FIG. 4 can increase the diameter of the striking face 111. In the state of FIG. 4, even when the interval between the vertical and horizontal planes is somewhat narrower than the diameter of the striking face 111, the vicinity of the outer periphery of the disk portion 112, which will be described later, is placed behind the vertical and horizontal planes. This is because the formwork can be directly struck by turning around.

  The striking portion 110 preferably further includes a disc portion 112 and a tapered portion 113. That is, in the tip tool 100 of the present invention, it is preferable that the disc portion 112 and the main body portion 120 are connected through the tapered portion 113. This is because the diameter of the taper portion 113 is ensured to be larger toward the tip end side, and the diameter of the taper portion 113 is made smaller toward the rear end side, so that the impact applied to the concrete mold is particularly large. Thus, sufficient shock absorption is possible, so that the taper portion 113 itself can be made less susceptible to breakage and the like, and in addition, repeated impacts caused by the impact on the concrete formwork can pass through the taper portion 113. This is because transmission to the main body 120 can be prevented.

(Disc part)
The disc part 112 is a part having a cylindrical thickness T (see FIG. 1A) extending from the striking face 111 to the rear end side while maintaining the same diameter. Maintaining the same diameter means that the outer diameter of the disc portion 112 is the same as the outer diameter of the striking surface 111 at any position in the axial direction of the disc portion 112. The cylindrical thickness T of the disc part 112 is preferably 5.8 to 6.2 mm. When the thickness T is less than 5.8 mm, it is not possible to secure a sufficient thickness at the disc portion 112 to withstand the impact caused by the impact on the concrete formwork. This is because breakage such as cracking is likely to occur. On the other hand, if the thickness exceeds 6.2 mm, the tip tool 100 of the present invention becomes unnecessarily heavy.

(Taper part)
The tapered portion 113 connects the disc portion 112 and the main body portion 120 and contracts toward the rear end side within a range that does not become smaller than the diameter D1 (see FIG. 1A) of the main body portion 120 (first main body portion 121). It is a part to be diameter. Reduced diameter means that the outer diameter gradually decreases along the axial direction (broken line in FIG. 1A) toward the rear end side. FIG. 1A shows a state in which the tapered surface 114 of the tapered portion 113 is linearly reduced in diameter. The reduced diameter may be linear as shown in FIG. 1, or may be a quadratic curve or an exponential function. When the diameter of the tapered surface 114 is linear, the angle θ formed by the tapered surface 114 and the axial direction (broken line in FIG. 1A) is preferably 45 to 50 °. Within this range, troubles such as breaking at the boundary between the striking portion 110 and the main body portion 120 hardly occur even if there is repeated impact due to the striking on the concrete mold.

(Main body)
The main body 120 is a part that connects the hitting part 110 and the mounting part 130 among the parts of the tip tool 100. The main body 120 can be formed of a first main body 121 and a second main body 122, for example, as shown in FIGS. In this case, the first main body 121 is a round bar-like portion provided on the side close to the striking protrusion 110. The second main body portion 122 is provided on the side close to the mounting portion 130. The outer diameter D2 of the second main body 122 is preferably smaller than the outer diameter D1 of the first main body 121, and both the first main body 121 and the second main body 122 are preferably round bars. Furthermore, it is preferable that the 1st main-body part 121 and the 2nd main-body part 122 are provided coaxially. In order to fix the main body 120 and the mounting portion 130 to the hitting projection 110, for example, as shown in the cross-sectional view of FIG. 2, the front end 123 of the first main body 121 is opened to the rear end side of the hitting projection 110. It can be inserted into the recess 115 and fixed. If it fixes by such a method, the 1st main-body part 121 and the 2nd main-body part 12 can be fixed in the state without a clearance gap.

(Mounting part)
The mounting portion 130 is a portion of the tip tool 100 that is provided on the rear end side of the tip tool 100 and that includes a shank 131 that can be attached to the hand-held actuator 200.

(shank)
In the tip tool 100 of the present invention, the shank 131 of the mounting portion 130 is SDS-plus. SDS-plus is a shank standardized by Bosch. By providing a general-purpose standardized shank in the mounting portion 130 with the tip tool 100 of the present invention, the tip tool 100 can be detachably attached to a general-purpose hand-held actuator 200. Detachable means that attachment to the handheld actuator 200 or removal from the handheld actuator 200 is free. With this attachment, the tip tool 100 of the present invention can be used as a mallet instead of a mallet.

  Here, there are two types of shanks that are suitable for a small actuator having a main body mass of up to 3 kg, and three types that are suitable for a large actuator having a main body mass of 5 kg or more. Specifically, the ones suitable for large actuators are hexagonal shanks (17mm hexagonal shanks adopted by many domestic large hammer drills) and SDS-max (bosch standardized). There are three types: special shape shanks) and spline shanks (which are rarely used in spline shanks). On the other hand, there are two types of products suitable for small actuators, the round shank manufactured by Hitachi Koki Co., Ltd. and the above-mentioned SDS-plus (special shape shank standardized by Bosch).

  Among the general-purpose standardized shanks, the hexagonal shanks, the SDS-max, and the spline shanks are shanks that are suitable for large-sized actuators having a main body mass of 5 kg or more. On the other hand, SDS-plus is a shank suitable for small actuators with a body mass of up to 3 kg.

  Among the many general-purpose standardized shanks as described above, the reason for adopting SDS-plus in the tip tool 100 of the present invention is that the body mass of the hand-held actuator 200 can be reduced by at least 2 kg, Thereby, the inconvenience and trouble of the operator accompanying carrying of the hand-held actuator 200 can be reduced.

  In the following, the present invention will be described in more detail using examples. Here, the experimental result which examined the usefulness of this invention regarding prevention of generation | occurrence | production of a jumper is demonstrated. In addition, this invention is not limited only to the aspect of the following Examples.

Example 1
The striking surface shown in FIG. 1 is a circular flat surface with a diameter of 40 mm, the cylindrical portion T has a cylindrical thickness T of 5.8 mm, the taper portion has a taper angle θ of 45 °, and the first body portion has a diameter D1 of 11. A steel tip tool having a 5 mm diameter, SDS-plus shank formed on the mounting portion was mounted on Makita's hammer drill HR2611F (trade name). The concrete was compacted by repeatedly striking the mold in a 52 × 52 mm frame surrounded by vertical and horizontal sides in the hammer drill impact mode. As a result, it was found that the concrete nodule was sufficiently rotated and good compaction work was possible, and that high-quality concrete was formed without generating any jumpers.

(Example 2)
The striking surface shown in FIG. 4 is a circular flat surface with a diameter of 55 mm, a cylindrical thickness T of the disk portion is 5 mm, an outer diameter D1 of the first main body portion is 11.2 mm, and an SDS-plus shank is attached to the mounting portion. The formed steel tip tool was mounted on a Makita hammer drill HR2611F (trade name). The vicinity of the outer periphery of the disc portion was wrapped around the 52 × 52 mm vertical and horizontal enclosures, and the disc surface was directly touched to the mold in the frame. In this state, the concrete was compacted by repeatedly striking the formwork. As a result, it was found that the concrete nodule was sufficiently rotated and good compaction work was possible, and that high-quality concrete was formed without generating any jumpers.

  The present invention has been specifically described above with reference to the drawings. However, the present invention is not limited to the illustrated example, and the present invention is implemented with appropriate modifications within a range that can meet the spirit of the present invention. These are all possible and are included in the technical scope of the present invention. For example, in the embodiment shown in FIG. 1 and FIG. 2, the taper portion 113 is provided with the linear surface 114 (see FIG. 1A). However, as shown in the embodiment of FIG. A curved surface 114 may be provided on the portion 113 (see FIG. 4A).

  The tip tool of the present invention is attached to a hand-operated actuator that can set the hammering mode, so that the work of compacting the concrete placed in the formwork, which has been done manually with a wooden mallet, can be done easily and electrically. Therefore, the quality of concrete is improved and it can be used industrially.

DESCRIPTION OF SYMBOLS 100 Tip tool 110 Impacting part 111 Impacting surface 112 Disk part 113 Tapered part 114 Tapered surface 115 Recessed part 120 Body part 121 1st main body part 122 2nd main body part 123 Front end 130 Mounting part 131 Shank 200 Hand-held actuator D1, D2 Outer diameter T Cylindrical thickness

(Handheld actuator)
The hand-held operating device 200 is a general-purpose electric device that is essential at a construction site, such as a lightweight hammer drill, and is a device that can be attached with various shapes of tip tools. In the hand-held operating device 200 used with the tip tool 100 of the present invention, it is preferable that it can be used at least in the impact mode for the purpose of use. Handheld actuator 200, by replacing the tip tool, a device that can accommodate a variety of work in the construction site, for example, if mounting the hula Ttochizeru to its destination end as a tip tool, chipping-Mizokiri-corner compatible der to the work of such issues is, if fitted with Thailand Ruchizeru as the tip tool, it is possible to correspond to the work such as peeling off the tiles. Also, even in the work of drilling air holes necessary for concrete placing work, if a wooden drill is attached as a tip tool, it is not necessary to prepare a separate drill tool. If the tip tool 100 of the present invention is attached, it is possible to cope with compaction work by hitting concrete.

The relatively small handheld actuator 200 further employs a SDS-plus, does not require a power supply direct 100 V, would also be present battery charge type. If the tip tool 100 of the present invention is attached to such a battery-charged hand-held actuator 200, work can be performed without stress even in places where the extension cord is difficult to route due to, for example, a post or a support work. The work efficiency can be greatly improved. Of course, in the field where the working time greatly exceeds the operation time of the battery, it may be used in combination with the conventional hand-held operation device 200 of the type that directly supplies 100V power.

Claims (3)

A tip tool for mounting a hand-held actuator, comprising a tip-side striking portion, a rear-end-side mounting portion, and a main body portion that connects the striking projection portion and the mounting portion,
The front end surface of the hitting portion is a circular flat hitting surface, and the diameter of the hitting surface is 30 to 60 mm,
The mounting tool includes a shank that can be mounted on a hand-held actuator, and the shank is SDS-plus. The hitting portion is
A disc portion having a cylindrical thickness extending from the striking surface to the rear end side while maintaining the same diameter;
The tip tool according to claim 1, further comprising: a tapered portion that connects the disc portion and the main body portion and that decreases in diameter toward the rear end side within a range that does not become smaller than the diameter of the main body portion.   The tip tool according to claim 2, wherein the cylindrical thickness of the disc portion is 5.8 mm to 6.2 mm.

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