Nail gun

Patent metadata

Field	Value
Publication number	US-12290907-B2
Application number	US-202318208215-A
Country	US
Kind code	B2
Filing date	Jun 9, 2023
Priority date	Nov 4, 2021
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

A driving tool, including a driver assembly and a lifting assembly. The driver assembly includes a drivable driver member and a base arranged on the driver member, where the driver member extends longitudinally in a first axis, and a plurality of engagement holes arranged in the first axis are provided on the driver member. The lifting assembly includes a driving wheel that is driven by a power output portion to rotate and a plurality of fitting portions arranged on a periphery of the driving wheel at intervals, where the plurality of fitting portions can be alternately engaged with the corresponding engagement holes, to drive the driver member to move along the first axis, so as to drive the base to move from a starting position to a driven position.

First claim

What is claimed is:

1. A nail gun comprising:
a housing;
a power output portion arranged in the housing;
a magazine configured to provide a fastener for the nail gun;
a muzzle configured to receive a driven fastener;
a driver assembly comprising a driver member and a base that is in mechanical communication with the driver member, wherein the driver member extends along a first axis in a longitudinal direction; and
a lifting assembly configured to drive the driver member to move to drive the base to move from a starting position to a driven position,
wherein:
the lifting assembly comprises a driving wheel that is driven by the power output portion and rotates around a second axis, and a plurality of fitting units are arranged on a periphery of the driving wheel at intervals;
a plurality of engagement holes are arranged on the driver member along a direction of the first axis;
the plurality of fitting units are configured to alternately engage with respective corresponding engagement holes under an action of the driving wheel; and
the driver member comprises a plurality of engagement units that are formed on a side of each engagement hole close to the base, and the plurality of fitting units are configured to engage with the plurality of engagement units to drive the driver member to move in the direction of the first axis.

2. The nail gun according to claim 1 , further comprising a cylinder at least partially arranged in the housing, wherein when the base moves from the starting position to the driven position, gas stored in the cylinder is compressed to implement energy storage.

3. The nail gun according to claim 1 , wherein:
the driver member is provided with a driver portion for driving the fastener, a clamping portion, and a connecting portion that is engaged with the base along the direction of the first axis in sequence;
the plurality of engagement holes are provided on the clamping portion; wherein the driver member has a width extending in a direction of the second axis; and
a width of the clamping portion is greater than the width of the driver portion.

4. The nail gun according to claim 1 , wherein;
the driver member is provided with a plurality of portions along the direction of the first axis in sequence, each of which has a first side surface and a second side surface;
the plurality of portions comprises a driver portion for driving the fastener, a clamping portion, and a connecting portion that is engaged with the base;
the plurality of engagement holes are provided on the clamping portion; and
the first side surface of the clamping portion is flush with the first side surface of the driver portion, and the second side surface of the clamping portion protrudes from the second side surface of the driver portion.

5. The nail gun according to claim 1 , wherein:
a quantity of the plurality of fitting units is defined as n, which are sequentially a first fitting unit to an n th fitting unit according to an order of being engaged with the plurality of engagement holes;
when the base moves from the starting position to near the driven position, the n th fitting unit is disengaged from a corresponding engagement hole; and
an angle between the n th fitting unit and the first fitting unit is greater than an angle between other adjacent fitting units.

6. The nail gun according to claim 5 , wherein the plurality of fitting units are respectively rotatably supported on the driving wheel through roller sleeves, and a diameter of a roller sleeve of the n th fitting unit is greater than a diameter of a roller sleeve of the first fitting unit.

7. The nail gun according to claim 1 , wherein:
at least one of the plurality of fitting units is a rolling portion,
the rolling portion rotates around an axis thereof on the driving wheel, and
the rolling portion is rollably engaged with a corresponding engagement hole.

8. The nail gun according to claim 1 , wherein:
the power output portion comprises a motor and a transmission mechanism;
the transmission mechanism comprises:
an output wheel, which is arranged coaxial with a motor output shaft; and
a transmission member, which meshes with the output wheel and is arranged coaxial with the driving wheel;

a rotation axis of the output wheel is perpendicular to a rotation axis of the transmission member; and
both the driver member and the output wheel are located on a side of a meshing surface on the transmission member, and a rotation axis of the driving wheel is located on a same side of the driver member close to the motor.

9. The nail gun according to claim 1 , wherein: a direction perpendicular to the first axis and perpendicular to the second axis is defined as a thickness direction of the driver member,
each of the plurality of engagement units is provided with an abutting portion close to a side of the driving wheel and a root portion away from the side of the driving wheel in the thickness direction,
each of the plurality of engagement units further comprises a meshing surface and a crossing surface, the meshing surface and the crossing surface are respectively located on two sides of the abutting portion along the direction of the first axis, and
the plurality of engagement units are engaged with the plurality of fitting units through a meshing surfaces.

10. The nail gun according to claim 9 , wherein for at least one of the plurality of engagement units, on a plane perpendicular to the thickness direction, a length of a projection of the root portion along the direction of the first axis-is greater than a length of a projection of the abutting portion along the direction of the first axis.

11. The nail gun according to claim 9 , wherein a length of at least one of abutting portions in the direction of the first axis ranges from 0 mm to 1 mm.

12. The nail gun according to claim 9 , wherein for at least one of the plurality of engagement units, in the thickness direction, the crossing surface is gradually close to the meshing surface in a direction toward the driving wheel.

13. The nail gun according to claim 12 , wherein the meshing surface is perpendicular to the first axis, and an angle between the crossing surface and the meshing surface is greater than 15 degrees and less than 75 degrees.

14. The nail gun according to claim 9 , wherein for at least one of the plurality of engagement units, the abutting portion connects the meshing surface and the crossing surface to form an arc.

15. The nail gun according to claim 9 , wherein for at least one of the plurality of engagement units, the crossing surface is a concave arc surface or a bevel.

16. The nail gun according to claim 15 , wherein the driving wheel is provided with a first fitting unit engaged with a first engagement unit adjacent to the base, and a distance between an outer edge of the first fitting unit and a rotation center of the driving wheel is not greater than a curvature radius of the crossing surface of the first engagement unit.

17. The nail gun according to claim 9 , wherein a minimum distance between a last engagement unit away from the base of the driver member and an axis of the driving wheel in the thickness direction is less than a minimum distance between other engagement units and the axis of the driving wheel in the thickness direction.

18. The nail gun according to claim 9 , wherein:
at least one of the plurality of fitting units is a rolling portion, the rolling portion is capable of rotating around an axis of the rolling portion on the driving wheel, the rolling portion is rollably e

Assignees

• Positec Power Tools Suzhou Co Ltd

Inventors

• Wang Zhiwei
• Zhang Xiangliang
• Wu Hongbing
• Ji Shaoshan

Classifications

• B25C1/047 Primary

  Mechanical details · CPC title

• B25C1/041 Primary

  with fixed main cylinder · CPC title

• B25C1/18

  Details and accessories, e.g. splinter guards, spall minimisers · CPC title

• B25C1/06

  operated by electric power · CPC title

• B25C1/04 Primary

  operated by fluid pressure {, e.g. by air pressure} · CPC title