Driving-in device with a gas spring mechanism

Abstract

In a driving-in device (100), in particular a nail gun, having a housing (102) in which a driving-in unit (112) for driving in, in particular shooting in, driving-in means is arranged, the driving-in unit (112) having a gas spring mechanism (115) which can be activated for the driving-in operation and has a gas spring (288), and, before activation of the gas spring mechanism (115), the gas spring (288) in each case being in a standby position (200), the gas spring (288) is decompressed in the standby position (200).

Description

[0001] Description

[0002] title

[0003] Driving tool with a gas spring mechanism

[0004] State of the art

[0005] The present invention relates to a driving device, in particular a nail gun, with a housing in which a driving unit for driving, in particular shooting, driving means is arranged, wherein the driving unit has a gas spring mechanism with a gas spring that can be activated for driving, and wherein the gas spring is in a ready position before activation of the gas spring mechanism.

[0006] A driving device of this type, designed as a nail gun, is known from the prior art. The nail gun has a housing in which a driving unit for driving, in particular shooting, driving agents is arranged. Furthermore, the driving unit has a gas spring mechanism with a gas spring that can be activated for driving. Before the gas spring mechanism is activated, the gas spring is always in a ready position. In the ready position, the gas spring is compressed.

[0007] Disclosure of the invention

[0008] The invention relates to a driving device, in particular a nail gun, with a housing in which a driving unit for driving, in particular shooting, driving agents is arranged, wherein the driving unit has a gas spring mechanism with a gas spring that can be activated for driving, and wherein the gas spring is in a ready position before activation of the gas spring mechanism. The gas spring is decompressed in the ready position. The invention thus enables the provision of a driving device in which an unintentional firing of a shot can be reliably and safely prevented by the gas spring being decompressed in the ready position.

[0009] Preferably, in the ready position of the gas spring, a main gas reservoir associated with the gas spring mechanism has its maximum filling volume and a cylinder venting chamber has its minimum filling volume.

[0010] This allows for a simple reduction of the pressure load on an associated sealing system of the driving device, so that any leakage of the driving unit that may occur over time due to the pressure load can at least be largely prevented.

[0011] Preferably, a shot for driving in, in particular shooting in, a driving agent is taken from a shooting position in which the gas spring is compressed, wherein in the shooting position the filling volume of the main gas reservoir is minimal and the filling volume of the cylinder vent chamber is maximal.

[0012] This makes it easy and straightforward to fire a driving-in, especially shooting-in, driving-in agent.

[0013] Preferably, a lifting mechanism is provided to transfer the gas spring from the ready position to the firing position.

[0014] This allows the gas spring to be moved safely and reliably from the ready position to the firing position.

[0015] Preferably, a main switch and a workpiece contact element associated with the driving unit are provided for activating a shot for driving, in particular shooting, a driving agent, wherein the workpiece contact element can be pressed against a workpiece surface to activate the shot.

[0016] This allows for a simple firing action. The driving unit is preferably operable in a sequential mode and a contact mode, in which pressing the workpiece contact element against a workpiece surface releases a firing action for driving, in particular shooting, a driving agent.

[0017] This makes it easy and straightforward to enable a suitable mode for an application.

[0018] Furthermore, the present invention relates to a driving device, in particular a nail gun, with a housing in which a driving unit for driving, in particular shooting, driving agents is arranged, wherein the driving unit has a gas spring mechanism with a gas spring that can be activated for driving. The gas spring is arranged in a ready position at least during storage and / or transport of the driving device, wherein the gas spring is decompressed in the ready position.

[0019] The invention thus enables the provision of a driving device in which, by means of the gas spring being decompressed in the ready position during storage and / or transport, an unintentional firing of a shot can be reliably prevented, at least during storage and / or transport of the driving device. Furthermore, the decompressed gas spring can at least reduce pressure loss in the gas spring mechanism during storage and / or transport of the driving device.

[0020] Preferably, the gas spring is arranged in the ready position at least until the first use of the driving device.

[0021] This allows for the safe storage and / or transport of the driving device in a simple manner from its manufacture until the time of its first commissioning for use in driving, in particular shooting, driving in driving agents.

[0022] Furthermore, the present invention relates to a method for operating a driving device according to the invention comprising the following steps:

[0023] • Actuating a first control element of the driving device; and • Actuating a second control element of the driving device to move the gas spring from a ready position to a firing position and to trigger a shot for driving in, in particular shooting in, a driving agent.

[0024] The invention thus enables the provision of a method for operating a driving device in which, by actuating the first and second operating elements, a safe and reliable transfer of the gas spring from the ready position to the firing position for triggering a shot can be made possible.

[0025] In a sequential mode of the drive unit, the first operating element is preferably the workpiece contact element, and the second operating element is the main switch.

[0026] This allows for a simple and safe operation of the driving device in sequential mode, preventing unintentional triggering of the driving unit by the actuation sequence of the two operating elements.

[0027] In a contact mode of the drive unit, the first control element is preferably the main switch, and the second control element is the workpiece contact element.

[0028] This allows for easy and straightforward safe operation of the driving device in contact mode, while preventing unintentional triggering of the driving unit by means of an alternative actuation sequence of the two operating elements.

[0029] Preferably, in contact mode of the driving unit, the main switch is only activated for the first shot, and the activated main switch is held in the actuated state for each subsequent shot, so that only the workpiece contact element is actuated for each subsequent shot. This allows for simple triggering of subsequent shots in contact mode of the driving unit.

[0030] Brief description of the drawings

[0031] The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawings. The drawings show:

[0032] Fig. 1 shows a perspective view of a nail gun designed as a driving device with a driving unit that has a gas spring mechanism with a gas spring,

[0033] Fig. 2 shows a sectional view through the driving device with the gas spring from Fig. 1 in a ready position, and

[0034] Fig. 3 shows a sectional view through the driving device with the gas spring from Fig. 1 and Fig. 2 in a firing position.

[0035] Description of the exemplary implementations

[0036] In the figures, elements with the same or comparable function are given identical reference symbols and described in detail only once.

[0037] Fig. 1 shows an exemplary driving device 100 with a housing 102 in which a driving unit 112 for driving, in particular shooting, driving agents (399 in Fig. 3) is arranged. According to one embodiment, the driving device 100 is designed as a nail gun.

[0038] The housing 102 features, for illustrative purposes, a handle 106, on which, by way of example, a main switch 108 is arranged. Preferably, a foot section 110 is arranged on a region of the handle 106 facing away from the driving unit 112. A battery pack 190 can be arranged on the foot section 110, at least for the purpose of providing power to the driving unit 112 independently of the mains supply.

[0039] Alternatively, the driving device 100 can be powered via a mains-dependent power supply using a power cable. For illustrative purposes, a workpiece contact element 114 is assigned to the driving unit 112. Preferably, a setting unit 130 is provided for setting a driving mode desired by a user of the driving device 100. Here, a choice can be made between a sequential mode, in which, after pressing the workpiece contact element 114 against an assigned workpiece surface, each shot is manually released by actuating the main switch 108, and a contact mode, in which, when the main switch 108 is actuated, the workpiece contact element 114 is pressed against an assigned workpiece surface to release each shot without the need to actuate the main switch 108 again each time.

[0040] Preferably, the driving device 100 has a driving agent magazine 104. The driving agent magazine 104 is designed to hold a plurality of driving agents (399 in Fig. 3) and to provide them for the driving unit 112. The driving unit 112 preferably has a gas spring mechanism 115 with a main gas reservoir 182.

[0041] Fig. 2 shows the driving device 100 with the driving unit 112 and the gas spring mechanism 115 from Fig. 1. The gas spring mechanism 115 has a piston 280 with a piston rod 289, which is movable in a hollow cylinder 270, to form a gas spring 288. A driving axis 201 is formed along a longitudinal extension of the hollow cylinder 270. The main gas reservoir 182 is formed along the driving axis 201 between a flap valve 294 and the piston 280.

[0042] The workpiece contact element 114 has a drive channel 298 designed as an internal recess. Drive elements (399 in Fig. 3) are driven or injected into a workpiece through the drive channel 298. Preferably, an end of the piston rod 289 facing away from the piston 280 acts upon a drive element (399 in Fig. 3) from the drive channel 298.

[0043] The insertion unit 112 preferably comprises the gas spring mechanism 115 with the main gas reservoir 182 and a secondary gas reservoir 282. The secondary gas reservoir 282 is preferably arranged in a cap 272. The cap 272 is preferably arranged at an end of the gas spring mechanism 115 opposite the insertion channel 298. When an insertion agent (399 in Fig. 3) is injected, the secondary gas reservoir 282 is connected to the main gas reservoir 182 via the flap valve 294, which is opened by an actuating element 297, as shown in Fig. 2. The opened flap valve 294 forms a fluid passage 252.

[0044] The actuating element 297 is preferably associated with a pressurizing element 296, which presses the actuating element 297 against the flap valve 294 to open it. The pressurizing element 296 is preferably arranged on the outer circumference of the housing 102 and slidably mounted on the housing 102. In Fig. 2, a spring element 295 is compressed by the pressurizing element 296. Furthermore, for illustrative purposes, a pressurizing element 281 is also associated with the housing 102. This element is designed to press the pressurizing element 296 against the spring force of the spring element 295 to open the flap valve 294 against the actuating element 297 when the drive channel 298 is pressed against a workpiece.

[0045] The gas spring 288 is arranged in a ready position 200 before the gas spring mechanism 115 is activated. According to the invention, the gas spring 288 is decompressed in the ready position 200 shown in Fig. 2. In the ready position 200 of the gas spring 288, the main gas reservoir 182 associated with the gas spring mechanism 115 preferably has its maximum filling volume, and a cylinder venting chamber (394 in Fig. 3) has its minimum filling volume. For illustrative purposes, the piston 280 is arranged at an end of the hollow cylinder 270 facing the drive channel 298. Preferably, the piston 280 rests against a piston stop 284 in the ready position 200 shown. Alternatively, the piston 280 can be arranged at a predetermined distance from the piston stop 284 in the ready position 200.

[0046] According to one embodiment, the gas spring 288 is completely decompressed in the ready position 200. It should be noted that an internal pressure above atmospheric pressure still exists in this position. According to another embodiment, the gas spring 288 is decompressed in the ready position 200 to such an extent that a stroke of up to 20%, preferably 10%, of the stroke length of the piston 280 in the direction of the insertion channel 298 is still possible. Furthermore, a shot is fired from a firing position (300 in Fig. 3) to drive in, in particular, a driving agent (399 in Fig. 3). In the firing position (300 in Fig. 3), the gas spring 288 is compressed. Preferably, the filling volume of the main gas reservoir 182 is minimal and the filling volume of the cylinder venting chamber (394 in Fig. 3) is maximal.

[0047] Preferably, a lifting mechanism 240 is provided for transferring the gas spring 288 from the ready position 200 shown in Fig. 2 to the firing position (300 in Fig. 3). In this process, the lifting mechanism 240 moves the piston 280 along the drive axis 201.

[0048] The lifting mechanism 240 preferably has a driver 290 with a toothed section 292. The toothed section 292 is preferably operatively connected to a gear 238 of the lifting mechanism 240. The driver 290 is preferably connected to the piston rod 289. Preferably, a motor for driving the driver 290 is associated with the lifting mechanism 240.

[0049] In a method for operating the driving device 100, a first and second operating element must be actuated sequentially to move the gas spring 288 from the ready position 200 to the firing position (300 in Fig. 3). This starts an operating cycle of the driving device 100. In the sequential mode of the driving unit 112, the first operating element is preferably the workpiece contact element 114 and the second operating element is the main switch 108 of Fig. 1. In the contact mode of the driving unit 112, the first operating element is preferably the main switch 108 of Fig. 1 and the second operating element is the workpiece contact element 114. Preferably, the first and second operating elements are actuated, and the gas spring 288 is moved from the ready position 200 to the firing position (300 in Fig. 3).3), whereby a shot is released immediately without the need for any further activation of the first and / or second control element.

[0050] Once the operating cycle of the driving device 100 has been started with a first shot, then in the contact mode of the driving unit, it is no longer necessary to actuate the first operating element, i.e., the main switch 108. Rather, the main switch 108, which was actuated for the first shot, is held in the actuated state for each subsequent shot, so that for each subsequent shot only the second operating element, i.e., the workpiece contact element 114, is actuated.

[0051] Preferably, the driving device 100, or the gas spring 288, is arranged in the ready position 200 at least during storage and / or transport. Furthermore, the driving device 100 is preferably arranged in the ready position 200 between each operating cycle.

[0052] Preferably, the driving device 100, or the gas spring 288, is arranged in the ready position 200 at least until its first use. This means that, after its manufacture, the driving device 100 is in the ready position 200 until its first commissioning, ready for use in driving, in particular shooting, driving in driving elements. After the first use, the driving device 100, or the gas spring 288, can be in a ready position corresponding to the ready position 200 or an alternative ready position. The alternative ready position can be any position of the gas spring 288, i.e., a compressed, decompressed, or partially decompressed position.

[0053] Fig. 3 shows the driving device 100 from Fig. 1 and Fig. 2 in a firing position 300, from which a shot is fired to drive in, in particular to inject, a driving agent 399. The driving agent 399 is still arranged in the driving channel 298 in Fig. 3.

[0054] In firing position 300, the gas spring 288 is compressed. Preferably, the filling volume of the main gas reservoir 182 is minimal and the filling volume of a cylinder venting chamber 394 is maximal. The cylinder venting chamber 394 is preferably formed along the drive axis 201 between the piston 280 and the piston stop 284.

[0055] Preferably, the gas spring 288 is fully compressed in the firing position 300. According to a further embodiment, the gas spring 288 is compressed in the firing position 300 such that a stroke of a maximum of 20%, preferably 10%, of the stroke length of the piston 280 in the direction of the flap valve 294 can still occur.

[0056] Furthermore, in the firing position 300, the actuation element 296 is preferably spaced apart from the actuating element 297, so that the flap valve 294 is closed.

Claims

Claims 1. Driving device (100), in particular nail gun, with a housing (102) in which a driving unit (112) for driving, in particular shooting, driving means (399) is arranged, wherein the driving unit (112) has a gas spring mechanism (115) with a gas spring (288) that can be activated for driving, and wherein the gas spring (288) is in a ready position (200) before activation of the gas spring mechanism (115), characterized in that the gas spring (288) is decompressed in the ready position (200).

2. Driving device according to claim 1, characterized in that in the ready position (200) of the gas spring (288) a main gas reservoir (182) associated with the gas spring mechanism (115) has its maximum filling volume and a cylinder venting chamber (394) has its minimum filling volume.

3. Driving device according to claim 2, characterized in that a shot for driving in, in particular shooting in, a driving means (399) is taken from a shooting position (300) in which the gas spring (288) is compressed, wherein in the shooting position (300) the filling volume of the main gas reservoir (182) is minimal and the filling volume of the cylinder venting chamber (394) is maximal.

4. Driving device according to claim 3, characterized in that a lifting mechanism (240) is provided for transferring the gas spring (288) from the ready position (200) to the firing position (300).

5. Driving device according to one of the preceding claims, characterized in that a main switch (108) and a workpiece contact element (114) associated with the driving unit (112) are used to activate a shot for driving, in particular shooting, a driving agent (399) are provided, wherein the workpiece contact element (114) can be pressed against a workpiece surface to activate the shot.

6. Driving device according to one of the preceding claims, characterized in that the driving unit (112) can be operated in a sequential mode and a contact mode in which pressing the workpiece contact element (114) against a workpiece surface releases a shot for driving, in particular shooting, a driving agent (399).

7. Driving device (100), in particular nail gun, with a housing (102) in which a driving unit (112) for driving, in particular shooting, driving means (399) is arranged, wherein the driving unit (112) has a gas spring mechanism (115) with a gas spring (288) that can be activated for driving, characterized in that the gas spring (288) is arranged in a ready position (200) at least during storage and / or transport of the driving device (100), wherein the gas spring (288) is decompressed in the ready position (200).

8. Driving device according to claim 7, characterized in that the gas spring (288) is arranged in the ready position (200) at least until a first use of the driving device (100).

9. Method for operating a driving device (100) according to claim 5, comprising the following steps: • Activating a first operating element (114, 108) of the driving device (100); and • Actuating a second control element (108, 114) of the driving device (100) to move the gas spring (288) from a ready position (200) to a firing position (300) and to trigger a shot for driving in, in particular shooting in, a driving agent (399).

10. Method according to claim 9, characterized in that in a sequential mode of the drive-in unit (112) the first operating element is the workpiece contact element (114) and the second operating element is the Main switch (108) is.

11. Method according to claim 9, characterized in that in a contact mode of the drive-in unit (112) the first operating element is the main switch (108) and the second operating element is the workpiece contact element (114).

12. Method according to claim 11, characterized in that in the contact mode of the driving unit (112) the main switch (108) is actuated only during a first shot and the actuated main switch (108) is held in the actuated state for each subsequent shot, so that only the workpiece contact element (114) is actuated during each subsequent shot.

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