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CN-122008130-A - Impact tool

CN122008130ACN 122008130 ACN122008130 ACN 122008130ACN-122008130-A

Abstract

The invention provides an impact tool. The impact tool has a tool holder, a motor, a driving mechanism, a tool body, a handle, and an operating member. The tool holder extends along a drive axis. The drive mechanism is responsive to the drive of the motor for driving the tip tool in a straight line along the drive axis. The tool body houses a tool holder, a motor, and a drive mechanism. The handle is connected to the tool body and includes a grip extending in a1 st direction intersecting the drive axis. The operating member is provided on the front surface side of the grip portion and is manually operated by a user to instruct the start of the motor. The grip portion has a1 st end portion approaching the tool body and a2 nd end portion distant from the tool body in a1 st direction intersecting the drive axis. The operating member is configured to include at least a center position of the grip portion that is substantially equidistant from the 1 st end and the 2 nd end, respectively, in the 1 st direction. Accordingly, the impact tool can exhibit excellent operability in various postures.

Inventors

  • SAEKI TOMOHIRO
  • SHIMMA YASUTOSHI
  • SAKAKIBARA YUJI

Assignees

  • 株式会社牧田

Dates

Publication Date
20260512
Application Date
20251107
Priority Date
20241111

Claims (11)

  1. 1. An impact tool, characterized in that, Comprising a tool holder, a motor, a drive mechanism, a tool body, a handle and an operating member, wherein, The tool holder extends along a drive axis defining a front-rear direction of the impact tool, and includes a front end portion configured to detachably hold a tip tool selected from a plurality of tip tools of different types; the motor includes an output shaft rotatable about a1 st rotational axis; The drive mechanism is operatively connected to the output shaft and, in response to driving of the motor, drives the tip tool held by the tool holder in a straight line along the drive axis; the tool body extends along the drive axis and houses the tool holder, the motor and the drive mechanism; the handle is connected with the tool main body and comprises a holding part, and the holding part extends along the 1 st direction crossing the driving axis; the operating member is provided on the front surface side of the grip portion, is manually operated by a user to instruct the start of the motor, The grip portion has a 1 st end portion close to the tool body and a 2 nd end portion distant from the tool body in the 1 st direction, The operating member is configured to include at least a center position of the grip portion that is substantially equidistant from the 1 st end and the 2 nd end, respectively, in the 1 st direction.
  2. 2. The impact tool of claim 1, wherein the impact tool comprises a plurality of blades, The operation member is located at a position separated from the 1 st end and the 2 nd end of the grip portion in the 1 st direction.
  3. 3. The impact tool of claim 2, wherein the impact tool comprises a plurality of blades, The operating member is supported by the grip portion so as to be linearly slidable.
  4. 4. The impact tool of claim 1, wherein the impact tool comprises a plurality of blades, The operating member extends in the 1 st direction from the 1 st end or the 2 nd end of the grip portion to a position at least beyond the central position.
  5. 5. The impact tool of claim 4, wherein the impact tool comprises a plurality of blades, The operating member is rotatably supported by the grip portion at one end in the longitudinal direction of the operating member.
  6. 6. The impact tool as claimed in any one of claims 1 to 5, wherein, The drive mechanism includes (i) an intermediate shaft operatively connected to the output shaft and rotatable about a 2 nd rotation axis in response to rotation of the output shaft, (ii) a swinging member disposed on the intermediate shaft and configured to swing in the front-rear direction in response to rotation of the intermediate shaft, (iii) a piston operatively connected to the swinging member and configured to reciprocate linearly along the drive axis in response to swinging of the swinging member, The drive axis, the 1 st rotation axis and the 2 nd rotation axis are parallel to each other, The handle protrudes from the tool body in a direction from the drive axis to the 2 nd rotation axis.
  7. 7. The impact tool of claim 6, wherein the impact tool comprises a plurality of blades, The 1 st rotation axis of the output shaft is located between the drive axis and the 2 nd rotation axis of the intermediate shaft in the 1 st direction.
  8. 8. The impact tool as claimed in any one of claims 1 to 7, wherein, And a battery mounting portion to which a battery can be detachably mounted, The drive axis passes through the battery mounting portion when the impact tool is viewed in a2 nd direction orthogonal to the front-rear direction and the 1 st direction.
  9. 9. The impact tool of claim 8, wherein the impact tool comprises a plurality of blades, The battery mounting portion includes an engaging portion configured to slidably engage with the battery in a direction intersecting the drive axis.
  10. 10. The impact tool of claim 9, wherein the impact tool comprises a plurality of blades, The engaging portion is configured to slidably engage with the battery in the 1 st direction.
  11. 11. The impact tool of claim 10, wherein the impact tool comprises a plurality of blades, The battery mounting part is located at a position behind the holding part in the front-rear direction, The battery mounting portion is configured such that, in the 1 st direction, a region behind the grip portion where a hand is placed when the user grips the grip portion is located on the opposite side of the 2 nd end portion of the grip portion.

Description

Impact tool Technical Field The present invention relates to an impact tool. Background The impact tool performs a machining operation on a workpiece by impacting the tip tool and driving the tip tool in a straight line along a driving axis. The impact tool is capable of selectively mounting a plurality of tip tools suitable for various machining operations. Relatively small-sized impact tools that are easy to use in various machining operations include so-called pistol grips, and those in which a part of a handle and a tool body are formed in a ring shape (refer to japanese patent laid-open publication No. 2019-038093 and japanese patent laid-open publication No. 2022-036600, respectively). Disclosure of Invention In any of the above-described types of impact tools, the shape of the handle is designed so that a user can easily grasp the grip portion and easily press the tip tool toward the workpiece along the drive axis. Further, an operating member for starting the motor provided to the grip portion is configured to be easy to operate when the grip portion is in a posture arranged below the drive axis in the vertical direction. However, in the case of using the impact tool in a different posture from that, there is room for improvement in operability thereof. A non-limiting object of the present invention is to provide an impact tool that can exhibit good operability in various postures. A non-limiting embodiment of the present invention provides an impact tool having a tool holder, a motor, a driving mechanism, a tool body, a handle, and an operating member. The tool holder extends along a drive axis defining a front-rear direction of the impact tool. The tip end portion of the tool holder is configured to detachably hold a tip tool selected from a plurality of tip tools of different types. The motor includes an output shaft rotatable about a 1 st rotational axis. The drive mechanism is operatively connected to the output shaft. In addition, the driving mechanism linearly drives the tip tool held by the tool holder along the driving axis in response to the driving of the motor. The tool body extends along a drive axis. In addition, the tool body houses the tool holder, the motor, and the driving mechanism. The handle is connected with the tool body and comprises a holding part. The grip portion extends in the 1 st direction intersecting the drive axis. The operating member is provided on the front surface side of the grip portion and is manually operated by a user to instruct the start of the motor. The grip portion has a 1 st end portion approaching the tool body and a 2 nd end portion distant from the tool body in the 1 st direction. The operating member is configured to include at least a center position of the grip portion that is substantially equidistant from the 1 st end and the 2 nd end, respectively, in the 1 st direction. The handle of the impact tool of this embodiment has a grip portion extending in the 1 st direction intersecting the drive axis. The operation member manually operated to instruct the start of the motor is configured to include a center position in the 1 st direction (i.e., the long axis direction of the grip). Therefore, the user can easily operate the operation member with one or more fingers, both when the user grips the grip portion with the thumb in the direction of the 1 st end side of the grip portion (hereinafter referred to as the forward direction) and when the user grips the grip portion with the thumb in the direction of the 2 nd end side of the grip portion (hereinafter referred to as the reverse direction). In addition, since the impact tool can be used in various postures, the direction of gripping the grip portion does not substantially affect the operability of the operating member, and therefore the impact tool can exhibit excellent operability in various postures. Drawings Fig. 1 is a left side view of an impact tool with a battery mounted thereto. Fig. 2 is a perspective view of the impact tool with the battery mounted, as seen from the rear. Fig. 3 is a perspective view of the needle bundle rust remover. Fig. 4 is a partial cross-sectional view of the needle bundle rust remover. Fig. 5 is a cross-sectional view of the impact tool with the tip tool pressed against the workpiece. Fig. 6 is a VI-VI cross-sectional view of fig. 5. Fig. 7 is a partial enlarged view of fig. 5. Fig. 8 is a sectional view of VIII-VIII of fig. 5, and is an explanatory view of a load state. Fig. 9 is a cross-sectional view corresponding to fig. 7, showing the impact tool in an unloaded state with the needle beam rust remover installed. Fig. 10 is a cross-sectional view corresponding to fig. 7, showing the impact tool in an unloaded state with the tip tool other than the needle beam rust remover attached. Fig. 11 is an explanatory view of a mode of use of the impact tool with the bucket attached. Fig. 12 is a cross-sectional view of another embodiment impact tool. Description of the