Impact tools

Abstract

To provide an impact tool capable of reducing the load transmitted to a user holding the tool body. [Solution] The impact tool 1 comprises a tool body 10, a tip tool 20 attached to the tip of the tool body 10 and moving back and forth to repeatedly come into contact with the workpiece W and apply an impact force, and a cylindrical support portion 30 protruding forward from the tool body 10. The tool body 10 is pressed against the workpiece W via the support portion 30, and when the tool body 10 is driven in this state and the tip tool 20 moves back and forth, the tip of the tip tool 20 moves back and forth between a position where it protrudes relative to the support tip portion 31 of the support portion 30 and a retracted position, making it possible to repeatedly apply an impact force to the workpiece W.

Description

[Technical Field]

[0001] The present invention relates to an impact tool that applies impact to a workpiece or the like to perform various operations. [Background technology]

[0002] BACKGROUND ART Conventionally, impact tools such as the impact tool disclosed in Patent Document 1 are known in which the tool body is held by hand by an operator or by a robot arm to perform work. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-151682 Summary of the Invention [Problem to be solved by the invention]

[0004] Impact tools such as those described above are used by gripping the tool body to perform work, and the vibrations emitted by the tool body during work are transmitted strongly to the worker's hands and the robot arm, posing a problem of harming the worker's health and shortening the lifespan of the robot arm.

[0005] Therefore, an object of the present invention is to provide an oscillation tool that can solve such problems. [Means for solving the problem]

[0006] The present invention relates to an impact tool comprising a tool body, a tip tool attached to the tip of the tool body and moving back and forth to repeatedly contact an impact target, and a support part protruding forward from the tool body, wherein a support tip part provided at the tip of the support part is located rearward of the tip of the tip tool at its forward-and-backward moving tip end at its forward-and-backward position in the front-and-back direction of the tip tool and forward of the tip of the tip tool at its rearmost position in the front-and-back direction of the tip tool, and the tool body is driven to move the tip tool back and forth with the support tip part of the support part pressed against the impact target, thereby applying an impact force to the impact target when the tip of the tip tool contacts the impact target in the front-and-back direction of the tip tool. The user holding the tool body may be a worker or a robot. The impact target may be a workpiece, the ground, or the like.

[0007] In this configuration, the support tip is pressed against the part to which the impact is applied to perform the work, which has the advantage that the posture of the tool body during work is stable and the tool body is easy to hold, reducing the burden on the worker, etc. In addition, by connecting the tool body and the part to which the impact is applied via the support part, it is possible to prevent the vibrations and reaction forces generated when the tool body is driven from being strongly transmitted to the user, etc.

[0008] Also, a configuration is proposed in which the support part has a cylindrical shape with the front-to-rear direction of the tip tool as the axial direction, and when the support tip part of the support part is pressed against the part to which an impact is to be applied, the part where the tip tool comes into contact with the part to which an impact is to be applied is surrounded by the cylindrical support part.

[0009] In such a configuration, noise generated when the tip of the tip tool strikes the impact target portion is surrounded by the cylindrical support portion and can be prevented from leaking to the outside, which also serves as a noise countermeasure. [Effects of the Invention]

[0010] The impact tool according to the present invention has the excellent effect of suppressing the transmission of vibrations and the like to the user holding the tool body. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic diagram showing a side view of an impact tool according to an embodiment. [Figure 2] FIG. 10 is a partially enlarged side view of the impact tool showing a state in which the processing surface portion is retracted rearward from the support tip portion. [Figure 3] FIG. 2 is a partially enlarged side view of the impact tool showing a state in which an impact force is being applied to a workpiece. DETAILED DESCRIPTION OF THE INVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes in detail an embodiment of the present invention.

[0013] The present invention is not limited to the examples shown below, and design modifications are possible as appropriate.

[0014] As shown in Fig. 1, the impact tool 1 includes a tool body 10 and a tip tool 20 attached to the tip of the tool body 10. The tool body 10 is, for example, a pneumatic tool, and is configured so that the tip tool 20 moves repeatedly back and forth relative to the tool body 10. Furthermore, a cylindrical support part 30 is disposed at the front end of the tool body 10 to which the tip tool 20 is attached so as to protrude forward. The side wall portion of the support part 30 functions as a peripheral wall that surrounds the tip tool 20.

[0015] In this embodiment, a rammer is used as the impact tool 1, and the tip of the tip tool 20 has a processing surface portion 21 that comes into contact with the workpiece W and is formed as a flat surface.

[0016] At the tip of the support portion 30, a support tip portion 31 made up of a flat surface is formed in an annular shape.

[0017] Here, the support tip portion 31 is located rearward of the position α of the machining surface portion 21 of the tip tool 20 at the most advanced position, and is located forward of the position β of the machining surface portion 21 of the tip tool 20 at the most retracted position.

[0018] The impact tool 1 is used in a state in which an operator presses the tool body 10 against the workpiece W via the support part 30, as shown in Fig. 2. Then, when the drive source of the tool body 10 is turned on and the tip tool 20 starts to move back and forth, the machining surface part 21 of the tip tool 20 repeatedly moves back and forth between a position where it is retracted from the workpiece W and the surface of the workpiece W exposed at the position of the support tip part 31, and the machining surface part 21 strikes the workpiece W, thereby applying an impact force to the workpiece W, as shown in Fig. 3.

[0019] By repeating the above state, excessive forward and backward movement of the tool body 10 can be suppressed, and excessive load can be prevented from being applied to the worker (or user such as a robot arm) holding the tool body.

[0020] In the above-described embodiment, the dimensions and shapes of each part can be freely selected as appropriate. The vibration tool 1 may be a pneumatic impact tool or an electric impact tool. The impact tool 1 may be used in the construction field, at production sites in the manufacturing industry, or by dentists, etc. The shape of the vibration tool 1 held by a worker, etc., may be a straight shape as in this embodiment, or may of course be a pistol shape. The impact tool 1 may be used by being held by a worker's hand, or may be attached to, for example, a robot arm. [Explanation of symbols]

[0021] 1 Impact tools 10 Tool body 20 Tip 21 Machining surface section 30 Support part 31 Support tip W Workpiece (impact target)

Claims

1. A tool body, a tip tool attached to a tip of the tool body and moving back and forth to repeatedly come into contact with an impact application target; a support portion protruding forward from the tool body; Equipped with a support tip portion provided at a tip of the support part is located rearward of a tip of the tip tool at a foremost position of the tip tool which moves back and forth in the front-to-back direction of the tip tool, and is located forward of a tip of the tip tool at a rearmost position of the tip tool which moves back and forth, With the support tip of the support part pressed against the impact application target part, the tool body is driven to move the tip tool back and forth, and when the tip of the tip tool comes into contact with the impact application target part in the back and forth direction of the tip tool, an impact force is applied to the impact application target part. An impact tool characterized by:

2. The support portion has a cylindrical shape with the front-rear direction of the tip tool as its axial direction, and when the support tip portion of the support portion is pressed against an impact target portion, a portion where the tip tool comes into contact with the impact target portion is surrounded by the cylindrical support portion.

2. The impact tool of claim 1.

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