Hand-held power tool for driving wide U-shaped nails

Abstract

The invention relates to a hand-held power tool (10), in particular a nailer, for nailing a nailing device (12), in particular a wide U-shaped nail, into a material, the hand-held power tool (10) being operable with a rechargeable battery (14).

Description

Technical Field

[0001] The present invention relates to a hand-held power tool for driving wide U-shaped nails. Background Art

[0002] Wide U-shaped nails can be used in particular for fastening gypsum fiber boards (e.g., Fermacell boards). The U-shaped nails used here have the following dimensions:

[0003]

[0004] The hand-held power tools used for this purpose are either motor-operated with a cable connection or operated by means of a gas cylinder and a battery / accumulator.

[0005] Battery-operated power tools for driving U-shaped nails are known from DE 20 2020 003 656 U1 and DE 20 2021 102 698 U1. Summary of the Invention

[0006] The present invention provides a hand-held power tool for driving driving devices, in particular wide U-shaped nails (wide crown (7 / 16)-nails), wherein the hand-held power tool can be operated with a rechargeable battery. By using a battery instead of a power cord, flexibility in the use of the hand-held power tool is advantageously ensured, since no other energy source needs to be present nearby. Additionally, there is no need to replace the gas cylinder.

[0007] Advantageously, the hand-held power tool has a hammer for driving the U-shaped nail and a trigger unit for driving the hammer.

[0008] In an advantageous embodiment, the trigger unit is embodied as a flywheel mass.

[0009] In another advantageous embodiment, the trigger unit is embodied as a mechanical spring.

[0010] In another advantageous embodiment, the trigger unit is embodied as a pneumatic spring.

[0011] Advantageously, the hand-held power tool has an electric motor embodied as an inner rotor motor.

[0012] In another advantageous embodiment, the hand-held power tool has an electric motor (20) embodied as an outer rotor motor.

[0013] The electric motor drives the trigger unit by means of a belt or a transmission or directly or by spring preloading. Brief Description of the Drawings

[0014] Further advantages result from the drawings and the description of the drawings.

[0015] The drawings show:

[0016] Figure 1 : Schematic diagram of the first embodiment of the hand-held power tool according to the present invention,

[0017] Figure 2 : Schematic diagram of the second embodiment of the hand-held power tool according to the present invention,

[0018] Figure 3 : Schematic diagram of the third embodiment of the hand-held power tool according to the present invention,

[0019] Figure 4 : Schematic diagram of the fourth embodiment of the hand-held power tool according to the present invention,

[0020] Figure 5 : Schematic diagram of the fifth embodiment of the hand-held power tool according to the present invention,

[0021] Figure 6 : Schematic diagram of the sixth embodiment of the hand-held power tool according to the present invention,

[0022] Figure 7 : Schematic diagram of the seventh embodiment of the hand-held power tool according to the present invention,

[0023] Figure 8 : Schematic diagram of the eighth embodiment of the hand-held power tool according to the present invention,

[0024] Figure 9 : Schematic diagram of the ninth embodiment of the hand-held power tool according to the present invention,

[0025] Figure 10 : Schematic diagram of the tenth embodiment of the hand-held power tool according to the present invention.

[0026] The same reference numerals are used for the same components that appear in different embodiments. Specific embodiments

[0027] Figure 1 The hand-held power tool 10 is shown configured as a nailer. The hand-held power tool 10 is used to drive in the nailing device 12. In this embodiment, the nailing device 10 is configured as a wide U-shaped nail, wherein the width of the U-shaped nail is particularly greater than 6.4 mm.

[0028] The hand-held power tool 10 has a handle 13 so that one hand of the operator can rest on the handle to guide the hand-held power tool 10. A rechargeable battery 14 is arranged on the handle 13 and serves as an energy source.

[0029] The hand-held power tool 10 has a hammer 16 for driving the U-shaped nail 12 into the material. The trigger unit 18 drives the hammer 16 by force locking or form locking.

[0030] In Figure 1 the embodiment, the electric motor 20 is an inner rotor motor and is connected to the trigger unit 18 via a belt 22. The trigger unit is embodied as a flywheel mass. The electric motor 20 drives the flywheel mass 18 via the belt 22. However, it is also conceivable that the electric motor 20 drives the flywheel mass 18 via a chain.

[0031] In Figure 2 the embodiment, the electric motor 20 is an outer rotor motor and is connected to the trigger unit 18 via a belt 22. The trigger unit is embodied as a flywheel mass. The electric motor 20 drives the flywheel mass 18 via the belt 22. However, it is also conceivable that the electric motor 20 drives the flywheel mass 18 via a chain.

[0032] In Figure 3 the embodiment, the electric motor 20 is an inner rotor motor and is connected to the trigger unit via a gear drive 24, in particular a gear drive. The trigger unit (not shown in the figure) is embodied as a flywheel mass. The electric motor 20 drives the flywheel mass via the drive 24.

[0033] In Figure 4 the embodiment, the electric motor 20 is an outer rotor motor and is connected to the trigger unit via a drive 24, in particular a gear drive. The trigger unit (not shown in the figure) is embodied as a flywheel mass. The electric motor 20 drives the flywheel mass via the drive.

[0034] In Figure 5 the embodiment, the electric motor 20 is an inner rotor motor and is connected directly, i.e. without a belt or a gear drive, to the trigger unit 18. The trigger unit 18 is embodied as a flywheel mass and is driven via a bell 26. The bell 26 is connected directly to the motor shaft 28 of the electric motor 20. The pendulum 18 is either press-fitted or connected by engagement.

[0035] In Figure 6 the embodiment, the electric motor 20 is an outer rotor motor and is connected directly, i.e. without a belt or a drive, to the trigger unit 18. The trigger unit 18 is embodied as a flywheel mass and is driven via a bell 26. The bell 26 is connected directly to the motor shaft 28 of the electric motor 20. The flywheel 18 is press-fitted or connected by an engagement portion.

[0036] In Figure 7 the embodiment, the electric motor 20 is an inner rotor motor. The trigger unit 18 is embodied as a mechanical spring. The mechanical spring 18 is pre-tensioned by means of the electric motor 20. If the holding force is released, the staple 12 is driven into the hammer 16 by the pre-tensioning.

[0037] The electric motor 20 is supported in the housing 30 of the hand-held power tool 10 via the motor housing or the stator.

[0038] InFigure 8 In the embodiment, the electric motor 20 is an external rotor motor. The triggering unit 18 is embodied as a mechanical spring. The mechanical spring 18 is pre-tensioned by means of the electric motor 20. If the holding force is released, the staple 12 is driven in by the hammer 16 due to the pre-tensioning.

[0039] The electric motor 20 is supported in the housing 30 of the hand-held power tool 10 by means of a shaft 32.

[0040] In Figure 9 the embodiment, the electric motor 20 is an internal rotor motor. The triggering unit 18 is embodied as a pneumatic spring. In this embodiment, the pneumatic spring 18 is configured as a cylinder. The gas 34 is compressed by means of the electric motor 20. If the gas 34 expands, the staple 12 is driven in by the hammer 16.

[0041] The electric motor 20 is supported in the housing 30 of the hand-held power tool 10 by means of the motor housing or the stator.

[0042] In Figure 10 the embodiment, the electric motor 20 is an external rotor motor. The triggering unit is embodied as a pneumatic spring. In this embodiment, the pneumatic spring 18 is configured as a cylinder. The gas 34 is compressed by means of the electric motor 20. If the gas 34 expands, the staple 12 is driven in by the hammer 16.

[0043] The electric motor 20 is supported in the housing 30 of the hand-held power tool 10 by means of a shaft 32.

[0044] The hand-held power tool 10 has the following dimensions:

[0045] a height of 270 mm to 366 mm,

[0046] a length of 282 mm to 420 mm,

[0047] a width of 75 mm to 108 mm.

Claims

1. A hand-held power tool (10), in particular a nailer, for driving a fastening element 12, in particular a wide U-shaped nail, into a material, wherein, The hand-held power tool (10) can be operated with a rechargeable battery (14).

2. The hand-held power tool (10) according to claim 1, characterized in that, The hand-held power tool (10) has a hammer (16) for driving staples (12) into a material and a trigger unit (18) for driving the hammer (16).

3. The hand-held power tool (10) according to claim 2, characterized in that, The trigger unit (18) is embodied as a flywheel mass.

4. The hand-held power tool (10) according to claim 2, characterized in that, The trigger unit (18) is embodied as a mechanical spring.

5. The hand-held power tool (10) according to claim 2, characterized in that, The trigger unit (18) is embodied as a pneumatic spring.

6. The hand-held power tool (10) according to claim 2, characterized in that, The hand-held power tool (10) has an electric motor (20) which is embodied as an inner rotor motor.

7. The hand-held power tool (10) according to claim 2, characterized in that, The hand-held power tool (10) has an electric motor (20) which is embodied as an outer rotor motor.

8. The hand-held power tool (10) according to claim 6 or 7, characterized in that The electric motor (20) drives the trigger unit (18) by means of a belt or a transmission, or directly drives the trigger unit, or drives the trigger unit by means of spring preloading.

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