CN-122008047-A - Electric needle bundle rust remover

CN122008047ACN 122008047 ACN122008047 ACN 122008047ACN-122008047-A

Abstract

The invention provides an electric needle bundle rust remover. The needle bundle rust remover comprises a tool body, a motor, a battery mounting part, a power transmission mechanism and a rust removing mechanism, wherein at least one part of the tool body extends along a driving axis of the needle bundle rust remover in the front-rear direction, the motor is an electric motor and is accommodated in the tool body, the battery mounting part is configured to accommodate a battery in a detachable mode, the power transmission mechanism is accommodated in the tool body, and the rust removing mechanism is supported at the front end part of the tool body. The rust removing mechanism comprises a plurality of needles. The plurality of needles protrude forward in a state of being exposed to the outside from the tool body, and are supported so as to be movable in the respective axial directions. The power transmission mechanism includes a power transmission portion. The power transmission unit is operatively connected to an output shaft of the motor, reciprocates along a drive axis by rotation of the output shaft, and transmits an axial force to the plurality of needles. Accordingly, the durability and convenience of the electric needle bundle rust remover can be improved.

Inventors

SAEKI TOMOHIRO
SHIMMA YASUTOSHI
By the way
SAKAKIBARA YUJI

Assignees

株式会社牧田

Dates

Publication Date: 20260512
Application Date: 20251107
Priority Date: 20241111

Claims (13)

1. An electric needle bundle rust remover is characterized in that, Comprises a tool main body, a motor, a battery mounting part, a power transmission mechanism and a rust removing mechanism, wherein, At least a portion of the tool body extends along a drive axis defining a forward-rearward direction of the needle beam rust remover; The motor is an electric motor accommodated in the tool body and has an output shaft rotatable about a1 st rotation axis; The battery mounting part is configured to detachably house the battery; The power transmission mechanism is accommodated in the tool main body, The rust removing mechanism is supported by a front end portion of the tool body, and includes a plurality of needles that protrude forward in a state of being exposed to the outside from the tool body and are supported so as to be movable in respective axial directions, The power transmission mechanism includes a power transmission portion that is operatively connected to the output shaft of the motor and that uses rotation of the output shaft to reciprocate along the drive axis to transmit the axial force to the plurality of needles.
2. The needle beam rust remover according to claim 1, characterized in that, The power transmission mechanism includes (i) a reciprocating member that is operatively connected to the output shaft of the motor and reciprocates along the drive axis with rotation of the output shaft, and (ii) a hammer that acts as the power transmission portion, applying an impact force to the plurality of needles by the reciprocating movement of the reciprocating member.
3. The needle bundle rust remover according to claim 2, characterized in that, The power transmission mechanism includes (i) an intermediate shaft that is operatively connected to the output shaft and rotates about a2 nd rotation axis that is parallel to the 1 st rotation axis in response to rotation of the output shaft, and (ii) a swinging member that is disposed on the intermediate shaft and swings in the front-rear direction in response to rotation of the intermediate shaft, The reciprocating member is operatively connected to the oscillating member and reciprocates in a straight line along the drive axis in response to oscillation of the oscillating member.
4. A needle beam rust remover according to claim 2 or 3, characterized in that, The reciprocating member is a piston that forms an air chamber with the ram, The ram reciprocates along the drive axis in response to internal pressure variations of the air chamber generated by reciprocation of the piston.
5. The needle beam rust remover according to claim 4, characterized in that, The piston is a cylinder with a bottom, The ram is slidable along the drive axis within the piston cylinder, The air chamber is formed between the bottom of the piston cylinder and the ram.
6. A needle beam rust remover according to claim 2 or 3, characterized in that, The power transmission mechanism further has an elastic member elastically connecting the reciprocating member and the hammer, The hammer reciprocates along the drive axis in response to the elastic force of the elastic member generated by the reciprocation of the reciprocation member.
7. The needle beam rust remover according to any one of claims 1-6, characterized in that, And a sleeve disposed in the front end portion of the tool body for holding the rust removing mechanism, The front end portion of the tool body is made of synthetic resin, The sleeve is made of metal and is integrally formed with the front end portion.
8. The needle beam rust remover according to any one of claims 1-7, characterized in that, The rust removing mechanism comprises a needle housing, a supporting body and an anvil, wherein, The needle housing having an opening at a front end through which the plurality of needles pass and being fixed to the tool body; The support body movably supports the plurality of needles in the axial direction; the anvil is disposed between the power transmission portion and the support body in the front-rear direction, the anvil is impacted by the power transmission portion to apply the axial force to the plurality of needles, The support body has a bottomed tubular shape including (i) a bottom portion having a plurality of holes through which the plurality of needles are respectively inserted, and (ii) a tubular peripheral wall portion extending rearward from an outer peripheral edge of the bottom portion and slidable in the front-rear direction along the drive axis within the needle housing, The anvil includes (i) a large diameter portion slidable in the front-rear direction along the drive axis within the needle housing, and (ii) a small diameter portion protruding forward from the large diameter portion and having a smaller outer diameter than the large diameter portion, The rear end portion of the peripheral wall portion of the support body may be fitted around the small diameter portion of the anvil.
9. The needle beam rust remover according to claim 8, characterized in that, An axial end portion of each of the plurality of needles is formed between the bottom portion of the support body and the anvil in the front-rear direction, and is movable within a space surrounded by the peripheral wall portion of the support body.
10. The needle beam rust remover according to any one of claims 1-9, characterized in that, The rust removing mechanism comprises a needle housing, a supporting body and an anvil, wherein, The needle housing having an opening at a front end through which the plurality of needles pass and being fixed to the tool body; the support body movably supporting the plurality of needles in the axial direction, the support body being slidable in the front-rear direction along the drive axis within the needle housing; The anvil being disposed between the power transmission portion and the support body in the front-rear direction and slidable in the front-rear direction along the drive axis within the needle housing, the anvil being impacted by the power transmission portion to apply the axial force to the plurality of needles, And an elastic body interposed between the anvil and the rear end portion of the needle housing in the front-rear direction.
11. The needle beam rust remover according to any one of claims 1-10, characterized in that, Has a handle and an operating part, wherein, 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 the start of the motor is instructed by a manual operation by a user, The grip has a1 st end closer to the tool body and a2 nd end farther from the tool body in the 1 st direction, The operating member is configured to include at least a center position in the grip portion that is substantially equidistant from each of the 1 st end and the 2 nd end in the 1 st direction.
12. The needle beam rust remover according to any one of claims 1-11, characterized in that, There is also an illumination device configured to illuminate a forward region of the plurality of needles.
13. An electric needle bundle rust remover is characterized in that, Has a tool body, a motor, a hammer mechanism and a rust removing mechanism, wherein, At least a portion of the tool body extends along a drive axis defining a forward-rearward direction of the needle beam rust remover; The motor is an electric motor accommodated in the tool body and has an output shaft rotatable about a1 st rotation axis; the hammer mechanism is accommodated in the tool main body; The rust removing mechanism is supported by a front end portion of the tool body, and includes a plurality of pins that protrude forward in a state of being exposed to the outside from the tool body and are supported so as to be movable in respective axial directions, The hammer mechanism includes (i) a piston operatively connected to the output shaft of the motor and reciprocating along the drive axis with rotation of the output shaft, and (ii) a ram reciprocating along the drive axis in response to pressure fluctuations within a gas chamber generated by the reciprocation of the piston to apply an impact force to the plurality of needles.

Description

Electric needle bundle rust remover Technical Field The invention relates to an electric needle bundle rust remover (NEEDLE SCALER). Background The needle bundle rust remover (also referred to as a needle gun rust remover: needle gun scaler, needle gun: needle gun) is a tool for removing foreign matter on the surface of a work material. The needle bundle rust remover has a plurality of needles (also referred to as pins) supported on a support body so as to be movable in the respective axial directions. When an impact force is applied to the pins, the tip of each pin collides with the work material, whereby foreign matter on the surface of the work material can be removed. For example, a needle bundle rust remover (multi-needle peeling tool) disclosed in Japanese patent application laid-open No. 63-34865 is configured such that an anvil (anvil) is impacted by a hammer head driven to reciprocate by an electric motor, and an impact force is applied to a needle (needle) by the anvil. Disclosure of Invention For the needle bundle rust remover, further improvement is desired for the purpose of improving durability and convenience. It is a non-limiting object of the present invention to provide a technique that helps to improve the durability and convenience of an electric needle bundle rust remover. One non-limiting aspect of the present invention provides an electric needle bundle rust remover having a tool body, a motor, a battery mounting portion, a power transmission mechanism, and a rust removing mechanism. At least a portion of the tool body extends along a drive axis defining a forward-rearward direction of the needle beam rust remover. The motor is an electric motor and is accommodated in the tool body. The motor has an output shaft rotatable about a1 st rotation axis. The battery mounting portion is configured to house the battery in a detachable manner. The power transmission mechanism is accommodated in the tool body. The rust removing mechanism comprises a plurality of needles. The plurality of needles protrude forward in a state of being exposed to the outside from the tool body, and are supported so as to be movable in the respective axial directions. The power transmission mechanism includes a power transmission portion. The power transmission unit is operatively connected to the output shaft of the motor and reciprocates along the drive axis by rotation of the output shaft, thereby transmitting an axial force to the plurality of needles. The needle bundle rust remover of the present embodiment has a battery mounting portion to which a battery can be mounted. Therefore, the needle bundle rust remover excellent in operability and portability and high in convenience is realized as compared with a needle bundle rust remover connectable to an external commercial power source. Another non-limiting aspect of the present invention provides an electric needle bundle rust remover having a tool body, a motor, a hammer mechanism, and a rust removing mechanism. The tool body extends along a drive axis defining a forward-rearward direction of the needle beam rust remover. The motor is an electric motor and is accommodated in the tool body. The motor has an output shaft rotatable about a 1 st rotation axis. The hammer mechanism is accommodated in the tool body. The rust removing mechanism is supported by the front end portion of the tool body. The rust removing mechanism comprises a plurality of needles. The plurality of needles protrude forward in a state of being exposed to the outside from the tool body, and are supported so as to be movable in the respective axial directions. The hammer mechanism includes a piston and a ram (plunger). The piston is operatively connected to an output shaft of the motor and is configured to reciprocate along the drive axis in response to rotation of the output shaft. The ram is configured to reciprocate along the drive axis in response to pressure fluctuations within the air chamber generated by reciprocation of the piston, thereby imparting an impact force on the plurality of needles. The needle bundle rust remover of the present embodiment has a hammer mechanism driven by the power of an electric motor. The hammer mechanism reciprocates the hammer by the pressure variation in the air chamber generated by the reciprocation of the piston, namely, the action of the air spring, and applies impact force to the plurality of needles of the rust removing mechanism. Therefore, the durability is excellent as compared with a structure in which the piston and the hammer are connected by a mechanical spring (for example, a coil compression spring) in order to apply an impact force. Drawings Fig. 1 is a left side view of the needle bundle rust remover of embodiment 1. Fig. 2 is a perspective view of the needle bundle rust remover as seen from the front. Fig. 3 is a cross-sectional view of the needle bundle rust remover. Fig. 4 is a cross-sectional view of IV-IV of fig. 1. Fig. 5 is a part