Drive device

Abstract

The present invention relates to a device for driving a fastening element into a substrate, the device comprising: a driver and a driving element, the driving element being particularly designed as a piston and being driven from an initial position to a setting position along a driving direction by driving so as to drive the fastening element into the substrate; a braking element having a contact surface, the contact surface defining the setting position of the driving element, and the driving element particularly abutting against the contact surface in the setting position; a pressing element having an end surface, the end surface being able to be pressed against the substrate along the driving direction, wherein the end surface and the contact surface have a spacing between each other along the driving direction, the spacing defining a driving depth of the fastening element into the substrate; and an adjusting device, by which the spacing between the end surface and the contact surface can be adjusted.

Description

Technical Field

[0001] The present application relates to an apparatus for driving a fastening element into a substrate. Background Art

[0002] In the case of this type of device, the depth to which the fastening element is driven into the substrate depends on a number of influencing variables and varies in different applications. To ensure the desired driving depth, it is known to provide the driving device with a driving depth adjustment device, by means of which the user can adjust the driving depth within a defined range. Summary of the Invention

[0003] This object is achieved by a device for driving a fastening element into a substrate, the device comprising a power unit and a drive element, which is preferably designed as a piston and is driven by the power unit in a driving direction from a starting position to a setting position in order to drive the fastening element into the substrate, the device further comprising a braking element with a contact surface, which defines the setting position of the drive element and against which the drive element rests, in particular in the setting position, the device further comprising a pressing element with an end surface which can be pressed against the substrate in the driving direction, wherein The distance between the end surface and the contact surface in the driving direction defines the driving depth of the fastening element into the substrate. The device further comprises an adjustment device by which the distance between the end surface and the contact surface can be adjusted, wherein the adjustment device comprises an adjustment element which is connected to the braking element via a first threaded connection and to the pressure element via a second threaded connection, and wherein a rotation of the adjustment element firstly causes a displacement of the adjustment element relative to the braking element and relative to the pressure element, and secondly causes a displacement of the pressure element relative to the braking element. This allows a simple adjustment of the distance between the setting position and the substrate, so that the driving depth of the fastening element into the substrate can be set by the user of the device.

[0004] An advantageous embodiment is characterized in that the thread axis of the first threaded connection is oriented in the driving direction. The thread axis of the second threaded connection is also advantageously oriented in the driving direction.

[0005] An advantageous embodiment is characterized in that the first threaded connection has a right-hand thread and the second threaded connection has a left-hand thread. Alternatively, the first threaded connection has a left-hand thread and the second threaded connection has a right-hand thread. A further advantageous embodiment is characterized in that the first threaded connection has a first thread pitch and the second threaded connection has a second thread pitch that is different from the first thread pitch. This measure simply allows the adjustment element to be rotated to deflect the pressure element relative to the braking element.

[0006] An advantageous embodiment is characterized in that the first threaded connection has a first internal thread and a first external thread, and in that the second threaded connection has a second internal thread and a second external thread. The adjustment element preferably has a first external thread and / or a second external thread. The adjustment element is particularly preferably designed as a threaded sleeve that is screwed onto the braking element and the pressure element.

[0007] An advantageous embodiment is characterized in that the device comprises a housing and a pressure sensor, the pressure sensor being in contact with the substrate only when the device is pressed against the substrate in the drive direction, and the pressure sensor being displaceable relative to the housing in a direction opposite to the drive direction between a starting position and a pressed position, wherein the pressure sensor is in the starting position when the device is not pressed against the substrate, and wherein the pressure sensor is in the pressed position when the device is pressed against the substrate. In the starting position, the pressure sensor preferably protrudes beyond the pressure element in the drive direction. Alternatively, the pressure sensor is formed by the pressure element.

[0008] An advantageous embodiment is characterized in that the power unit comprises a potential energy accumulator, preferably formed as a spring, and energy transmission means for transmitting energy of the energy source to the potential energy accumulator, the potential energy accumulator being used to store potential energy by driving the drive element. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] An exemplary embodiment of a device for driving a fastening element into a substrate is described in more detail below based on a number of examples and with reference to the accompanying drawings, in which:

[0010] Figure 1 shows a side view of the drive device,

[0011] Figure 2 shows a side view of the drive device with an open housing,

[0012] Figure 3 A longitudinal section through a portion of a drive device is shown in a first setting.

[0013] Figure 4 A longitudinal section through a portion of the drive device is shown in a second setting. DETAILED DESCRIPTION

[0014] Figure 1 A driving device 10 for driving a fastening element (e.g., a nail or bolt) into a substrate is shown in side view. The driving device 10 has a driving element (not shown) for transmitting energy to the fastening element, and also has a housing 20 containing the driving element and a power unit (also not shown) for transmitting the driving element.

[0015] The drive device 10 also includes a handle 30, a housing 40, and a connecting beam 50 connecting the handle 30 to the housing 40. Attached to the connecting beam 50 are a bracket hook 60 for suspending the drive device 10 from a stand or the like, and an electrical energy storage device designed as a battery 590. The handle 30 is provided with a trigger 34 and a grip sensor designed as a hand switch 35. Furthermore, the drive device 10 includes a guide channel 700 for guiding a fastening element and a pressing device 750 for detecting the distance between the drive device 10 and a substrate (not shown). Aligning the drive device vertically with the substrate is aided by an alignment aid 45.

[0016] Figure 2 The drive device 10 is shown with the housing 20 opened. The housing 20 contains a power unit 70 for transmitting a drive element 71. The power unit 70 includes an electric motor (not shown) for converting electrical energy from a battery 590 into rotational energy; a torque transmission device including a gear mechanism 400 for transmitting torque from the electric motor to a power converter in the form of a spindle drive 300; and a force transmission device including a roller system 260 for transmitting force from the power converter to a mechanical energy storage in the form of a spring 200, and for transmitting force from the spring 200 to the energy transmission element.

[0017] Figure 3 and Figure 4 The drive device 310 is shown in a partial longitudinal section with a housing 320 and a cartridge 340. The drive device 310 comprises a power unit 370 and a drive element 371, which is designed as a piston and is driven by the power unit 370 in a drive direction 330 from a starting position to a setting position in order to drive the fastening element into the substrate. The drive device 310 comprises a brake element 350 with a contact surface 351, which defines a Figure 3 and Figure 4 3. The setting position of the drive element 371 is shown in FIG. The brake element 350 has a holder 352 with a contact surface 351, a damping element 353, an impact element 354 and a sleeve element 355. At the end of the driving operation, the drive element 371 strikes the impact element 354 and is braked in a manner damped by the damping element 353. The impact element 354 is composed of a rigid material, such as steel, and the damping element 353 is composed of a highly elastically deformable material, such as an elastomer. In the setting position, the drive element 371 rests on the impact element 354, such as Figure 3 and Figure 4 In an exemplary embodiment not shown, the drive element bears against the contact surface in the set position.

[0018] The drive device 310 further comprises a pressing element 380 having an end surface 381, which can be pressed against the substrate in the drive direction 330. The distance between the end surface 381 and the contact surface 351 in the drive direction 330 defines the drive depth of the fastening element into the substrate, since the end surface 381 rests against the substrate during the drive operation, and the contact surface 351 defines the arrangement position of the drive element 371. This distance can be adjusted by means of an adjustment device 410. The adjustment device 410 comprises an adjustment element 420, which is connected to the sleeve element 355 of the braking element 350 via a first threaded connection 430 and to the pressing element 380 via a second threaded connection 440. Both the first threaded connection 430 and the second threaded connection 440 have a thread axis oriented in the drive direction 330.

[0019] Due to the first threaded connection 430, the rotation of the adjustment element 420 causes the adjustment element 420 to deflect relative to the braking element 350. Due to the second threaded connection 440, the rotation of the adjustment element 420 causes the adjustment element 420 to deflect relative to the pressing element 380. The first threaded connection 430 has a right-handed thread, while the second threaded connection 440 has a left-handed thread. As a result, the rotation of the adjustment element 420 generally causes the pressing element 350 to deflect relative to the braking element 380. This makes it possible to simply adjust the distance between the setting position and the substrate. The pitch of the first threaded connection 430 and the second threaded connection 440 are the same here. In an exemplary embodiment not shown, the first threaded connection has a left-handed thread and the second threaded connection has a right-handed thread, or the pitch of the first and second threaded connections are different from each other, and the thread orientations are the same or opposite.

[0020] like Figure 3 and Figure 4 As shown in FIG, the first threaded connection 430 has a first internal thread 431 and a first external thread 433. In addition, the second threaded connection 440 has a second internal thread 442 and a second external thread 444. The adjustment element 420 is designed as a threaded sleeve having a first external thread 433 and a second external thread 444, and is therefore screwed onto the braking element 350 or the pressing element 380.

[0021] The drive device 310 further comprises a pressure sensor 450 that projects beyond the pressure element 380 and its end surface 381 in the drive direction 330, whereby the pressure sensor first comes into contact with the substrate when the drive device 310 is pressed against the substrate in the drive direction 330. The pressure sensor 450 can be deflected relative to the housing 320 between a starting position and a pressing position in the drive direction 330 and in a direction opposite thereto. The pressure sensor 450 is preloaded to the position by the pressure spring 460. Figure 3 and Figure 4When the driving device 310 is pressed against the substrate, the pressure sensor is in the pressed position, at which the driving operation of the driving device 310 is started. When the driving device 310 is not pressed against the substrate, the pressure sensor is in the pressed position. Figure 3 and Figure 4 In the example embodiment not shown, the pressure sensor is formed by a pressure element.

[0022] exist Figure 3 In the embodiment, the adjustment device 410 is in a position such that the distance between the end face 381 and the contact surface 351 is the smallest possible and, therefore, the maximum possible driving depth. In this position, the sleeve element 355 and the pressing element 380 abut against each other, so that the adjustment stroke of the adjustment device 410 and, therefore, the driving depth are defined upwards. In contrast, in Figure 4 In the embodiment, the adjustment device 410 is in a position that maximizes the distance between the end face 381 and the contact surface 351 and is therefore at the minimum possible driving depth. The adjustment element 420 is latched in this position, preferably in one or more intermediate positions, by a latching device (not specifically shown).

[0023] The present invention has been described above based on a number of exemplary embodiments of a drive device. The features described can be transferred individually or in combination with each exemplary embodiment to all other exemplary embodiments, as long as these features do not contradict each other. It should be noted that the device according to the present invention can also be used for other purposes.

Claims

1. A device for driving a fastening element into a substrate, the device comprising a power unit (70) and a drive element (371), the drive element being designed as a piston and being driven by the power unit (70) in a driving direction from a starting position to a setting position in order to drive the fastening element into the substrate, the device further comprising a brake element (350), the brake element comprising a holder (352) with a contact surface (351), the contact surface defining the setting position of the drive element (371), and the drive element (371). The element (371) rests against the contact surface in the setting position, the braking element (350) further comprising a damping element (353) and an impact element (354), wherein at the end of driving the fastening element into the substrate, the driving element (371) strikes the impact element (354) and is braked in a manner damped by the damping element (353), the device further comprising a pressing element (380) having an end surface (381) which can be pressed against the substrate in the driving direction, wherein The distance between the end surface (381) and the contact surface (351) in the driving direction defines the driving depth of the fastening element into the substrate, the device further comprising an adjustment device (410) by means of which the distance between the end surface (381) and the contact surface (351) can be adjusted, wherein the adjustment device (410) comprises an adjustment element (420) which is connected to the braking element (350) via a first threaded connection (430) and to the pressing element (380) via a second threaded connection (440), wherein the The first threaded connector has a right-handed thread and the second threaded connector has a left-handed thread, so that due to the first threaded connector having the right-handed thread, the rotation of the adjustment element (420) causes the adjustment element (420) to shift relative to the braking element (350) and, due to the second threaded connector having the left-handed thread, the rotation of the adjustment element (420) causes the adjustment element (420) to shift relative to the pressing element (380), and thus the rotation of the adjustment element (420) causes the pressing element (380) to shift relative to the braking element (350).

2. The device according to claim 1, wherein The thread axis of the first threaded connection (430) is oriented toward the driving direction.

3. The device according to claim 1, wherein: The thread axis of the second threaded connection (440) is oriented toward the driving direction.

4. The device according to any one of claims 1 to 2, wherein: The first threaded connector (430) has a left-hand thread, and the second threaded connector (440) has a right-hand thread.

5. The device according to any one of claims 1 to 2, wherein: The first threaded connection (430) has a first thread pitch, and wherein the second threaded connection (440) has a second thread pitch different from the first thread pitch.

6. The device according to any one of claims 1 to 2, wherein: The first threaded connector (430) has a first internal thread and a first external thread, and the second threaded connector (440) has a second internal thread and a second external thread.

7. The apparatus of claim 6, wherein: The adjustment element (420) has a first external thread and / or a second external thread.

8. The device according to any one of claims 1 to 2, wherein: The adjusting element (420) is designed as a threaded sleeve which is screwed onto the braking element (350) and the pressure element (380).

9. The device according to claim 1 , further comprising a housing ( 20 ) and a pressure sensor ( 450 ), which contacts the substrate only when the device is pressed against the substrate in the drive direction and is displaceable relative to the housing ( 20 ) between a starting position and a pressing position in a direction opposite to the drive direction, wherein The pressure sensor (450) is in the starting position when the device is not pressed against the substrate, and wherein the pressure sensor (450) is in the pressed position when the device is pressed against the substrate.

10. The apparatus of claim 9, wherein: The pressing sensor (450) protrudes beyond the pressing element (380) along the driving direction when in the starting position.

11. The apparatus of claim 9, wherein: The pressure sensor (450) is formed by the pressure element (380).

12. The device according to any one of claims 1 to 2, wherein: The power unit (70) includes a potential energy storage (200) designed as a spring and an energy transmission device for transmitting energy from an energy source to the potential energy storage. The potential energy storage is used to store potential energy by driving the driving element (371).

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