TW202022200A - Fastening tool - Google Patents

Abstract

A fastening tool for driving fastening elements in a driving direction into a workpiece, comprising a housing and a press-on element having a press-on face, wherein the press-on element is displaceable with respect to the housing against the driving direction when the fastening tool is pressed against the workpiece in the driving direction, the fastening tool further comprising a support structure mounted to the housing and extending in the driving direction along the press-on element, wherein the support structure is displaceable with respect to the housing between a closed position, an open position and a release position, and wherein the support structure is removable from the housing from the release position.

Description

Fastening tool

The present invention relates to a fastening tool for driving a fastening element into a workpiece in a driving direction, which includes a housing and a pressing element having a pressing surface, wherein when the fastening tool is pressed against the workpiece in the driving direction When up, the pressing element is movable relative to the housing in a direction opposite to the driving direction. The invention also relates to related parts of the fastening tool and methods of use thereof.

In many applications, it is necessary to join or couple connecting elements. One such application is to engage the two elements by driving the fastening element into one or both of the two elements, thus using the fastening tool described above. The fastening tool is pressed against one of the elements (hereinafter referred to as the workpiece), and then the driving mechanism that can drive the driving element to the fastening element is triggered to drive the fastening element into the workpiece. When such a fastening tool is pressed against the workpiece, the workpiece may move backward, so it is necessary to support the workpiece from behind. As described in WO 2018/048315 A1, fastening tools can provide such support.

Various drive mechanisms are known to be used in fastening tools, including, for example, the combustion of explosive powder or liquid/gas combustibles, compressed air, spring drive, flywheel, electromagnetic drive, screw engagement, and combinations thereof. It is known to use any of these drive mechanisms in portable hand-held fastening tools.

One limitation of workpiece support is related to size. If the fastening tool provides support for the workpiece, the goal is to accommodate workpieces of different sizes in the same tool. It should also be recognized that there are applications where workpieces have different cross-sectional areas, different shapes, or different material grades.

Another limitation of workpiece support is related to obstacles. If the fastening tool provides support for the workpiece, certain support structures provided in front of the protruding part of the tool can be used. Such a supporting structure may reduce the accessibility of the area of the protruding part of the tool and make the operation of the fastening tool more difficult. It should also be recognized that there are applications that require removing the protruding part of the tool from the remaining fastening tool, such as replacing a drive element or performing other maintenance or repair work.

Therefore, it may be useful to provide an alternative design that eliminates some or all of the above restrictions or at least provides options for the public.

The above limitation is eliminated by a fastening tool for driving the fastening element into the workpiece in the driving direction. The fastening tool includes a housing and a pressing element with a pressing surface, wherein when the fastening tool is pressed in the driving direction When leaning on the workpiece, the pressing element is movable relative to the housing in a direction opposite to the driving direction; the fastening tool also includes a supporting structure mounted on the housing and extending along the pressing element in the driving direction, Wherein, the support structure is movable relative to the housing between a closed position, an open position and a released position, and where the support structure is removable from the housing from the released position.

In a preferred embodiment, the support structure protrudes behind the pressing surface in the driving direction. In a more preferred embodiment, the supporting structure includes supporting elements for fastening the workpiece. In a more preferred embodiment, the supporting element includes a supporting surface that supports the workpiece in a direction opposite to the driving direction during driving of the fastening element into the workpiece. In a more preferred embodiment, the supporting structure includes a supporting protrusion for engaging the workpiece or a recess in the workpiece, wherein the supporting surface is provided on the supporting protrusion. In another preferred embodiment, the supporting structure is movable relative to the pressing element in the driving direction.

In another preferred embodiment, the fastening tool includes a control element for controlling the movement of the support structure relative to the housing. In a more preferred embodiment, the control element has a first position in which the control element positions the support structure in the closed position. In another preferred embodiment, the control element has a second position, in which the control element positions the support structure in the open position. In another preferred embodiment, the control element has a release position, in which the control element releases the support structure to remove the support structure from the housing. Even better, the release position is the same as the open position. In another preferred embodiment, the control element comprises a lever hinged to the housing.

In another preferred embodiment, the fastening tool includes a forced guide for moving the support structure between the closed position and the open position by the movement of the control element. In a more preferred embodiment, the mandatory guide includes a control arm and at least one guide element, and the at least one guide element is engaged with the control arm so that the movement of the control arm causes the movement of the guide element and/or vice versa. In a more preferred embodiment, the control element includes a control arm, and the support structure includes a guide element. In an alternative embodiment, the support structure includes a control arm and the guide element includes a guide element. In another preferred embodiment, the control element includes a handle.

In another preferred embodiment, the fastening tool includes a locking element having a locking position and a clearance position, wherein if the locking element is in the locking position, the locking element prevents the control element from moving to the release position, and wherein if the locking element is In the gap position, the locking element allows the control element to move to the release position. In a more preferred embodiment, the locking element engages the stop element in the locking position, wherein the locking element passes the stop element in the gap position. In a more preferred embodiment, the locking element is provided on the control element, and the stop element is provided on the supporting structure. In an alternative embodiment, the locking element is provided on the support structure and the stop element is provided on the control element.

In another preferred embodiment, the engagement element includes a stop element. In another preferred embodiment, the locking element is manually movable between the locking position and the gap position. In another preferred embodiment, the fastening tool includes a driver and a driving device, and the driving device is used to drive the driver to the fastening element to drive the fastening element into the workpiece. In a more preferred embodiment, the pressing element can be removed from the remaining fastening tool to replace the driver or components of the driving device.

In another preferred embodiment, the pressing element is movable up to the pressing position, wherein if the pressing element is in the pressing position, the pressing element releases the driving operation of the fastening tool, and wherein, if the pressing element is not in the pressing position , The pressing element prevents the driving operation of the fastening tool. In another preferred embodiment, the pressing element includes a guide groove for guiding the fastening element when the fastening element is driven into the workpiece.

1, 2, 3, 4, 5, 6 and 7 show the fastening tool 1 for driving the fastening element 2 into the workpiece 4 along the positioning axis 14 in the driving direction 3. The fastening element 2 is formed as a nail. In an embodiment not shown, the fastening element is formed as, for example, a bolt, pin, clip, crank or screw. The fastening tool 1 includes a driver 5 shown schematically, which is formed, for example, as a positioning piston or a screwdriver bit. In addition, the fastening tool 1 includes a housing 6 and a schematically shown driving device 7 housed in the housing 6, and the driving device 7 is used to drive the driver 5 to the fastening element 2 to drive the fastening element 2 to Workpiece 4. The drive device 7 includes, for example, a gas or powder-driven combustion drive, a pneumatic drive or an electric drive such as a spring, a flywheel, or an electric drive, the electric drive particularly having a motor and a battery.

Furthermore, the fastening tool 1 includes a pressing element 8 which has a pressing surface 11 and is movable relative to the housing 6 in a direction opposite to the driving direction 3. When the pressing element 8 is pressed against the workpiece 4 in the driving direction 3, the pressing element 8 is movable to the pressing position shown in FIG. 1. If the pressing element 8 is in the pressing position, it releases the driving operation of the fastening tool 1. If the pressing element 8 is not in the pressing position, the pressing element 8 prevents the driving operation of the fastening tool 1. The pressing element 8 includes a guide groove 9 in which the fastening element 2 is guided when the fastening element 2 is driven into the workpiece 4. In an embodiment not shown, the fastening tool includes a separate guide groove extending along the pressing element in the driving direction.

As shown in the figure, the workpiece 4 is formed as a coupling sleeve for coupling elongated elements such as pipes or rods (for example, steel bars for concrete). The workpiece 4 and/or the element to be connected and/or the fastening element are made of metal (for example, iron) or alloy (for example, steel). In the illustrated embodiment, the fastening element 2 is driven tangentially into the gap between the inner surface of the workpiece 4 and the outer surface of the elongated element, so that the elongated element is tightly connected to the workpiece 4. The fastening element 2 is pre-installed to the workpiece 4, for example inserted into a pre-made hole (for example a drilled hole). In an embodiment not shown, the fastening elements are fed or sorted into the guide groove one by one. To this end, the fastening tool may include a magazine that opens out into the guide groove.

The fastening tool 1 includes a supporting structure 12 which is mounted on the housing 6 and protrudes behind the pressing surface 11 in the driving direction 3. The supporting structure 12 includes a supporting element 10 for fastening the workpiece 4. The supporting element 10 includes a supporting protrusion 13 for engaging one of the two recesses 15 in the workpiece 4. During the driving of the fastening element 2 into the workpiece 4, a supporting surface 16 supporting the workpiece 4 in a direction opposite to the driving direction 3 is provided on the supporting protrusion 13. Therefore, it is ensured that the fastening tool 1 is safely pressed against the workpiece 4. The support structure 12 is also movable relative to the pressing element 8 in the driving direction 3.

The support structure 12 is movable relative to the housing 6 in the driving direction 3 between a closed position, an open position and a released position. To this end, the support structure includes a carriage 20, and the housing 6 includes a rail 21 formed as a groove, for example, in which the carriage 20 slides in the driving direction 3. In the closed position of the supporting structure 12 (FIGS. 2 and 3), the distance between the supporting surface 16 and the pressing surface 11 is small, so as to hold the workpiece 4 between the supporting element 10 and the pressing element 8, and the pressing element 8 Press on the workpiece 4, as shown in Figure 1. In the open position of the supporting structure 12 (Figures 4 and 5), the distance between the supporting surface 16 and the pressing surface 11 is large, ensuring that the workpiece 4 can be moved into and out of the space between the supporting element 10 and the pressing element 8 . The support structure 12 moves from the closed position to the open position in the driving direction 3, and moves from the open position to the closed position in the direction opposite to the driving direction. From the release position of the support structure 12 (Figures 6 and 7), the support structure 12 moves further in the driving direction 3 to remove the support structure 12 from the housing 6. In this embodiment, the release position and the open position the same.

The fastening tool 1 includes a control element 17 for controlling the movement of the support structure 12 relative to the housing 6. The control element 17 includes two levers 18 hinged to the housing 6 and a handle 19. The control element 17 has a first position (Figures 2 and 3), a second position (Figures 4 and 5), and a release position (Figures 6 and 7). In the first position, the control element 17 makes the support structure 12 close Position; in the second position, the control element 17 makes the support structure 12 in the open position; in the release position, the control element 17 releases the support structure 12 so that the support structure 12 is removed from the housing 6. In order to move the support structure 12 between the closed position and the open position by the movement of the control element 17, the fastening tool includes a forcing guide 22. The mandatory guide 22 includes a control arm 23 (for example, composed of a lever 18) and two guide elements 24 (for example, composed of a supporting structure 12). The guide element 24 engages the control arm 23 such that the movement of the control arm 23 causes the movement of the guide element 24. In an embodiment not shown, the support structure includes a control arm and the guide element includes a guide element.

The fastening tool 1 also includes a locking element 25 having a locking position and a clearance position. The locking element 25 includes a latch 26 for locking in the locked position and/or the gap position. In the locked position (FIG. 5 ), the locking element 25 engages a stop element, which in this embodiment is provided on the support structure and is for example constituted by one of the guide elements. Therefore, if the locking element 25 is in the locking position, the locking element 25 prevents the control element 17 from moving to the release position. In an embodiment not shown, the locking element is provided on the support structure, and the stop element is provided on the control element. In the gap position (Figure 7), the locking element 25 can pass the stop element, allowing the control element 17 to move to the release position. If the locking element 25 is manually movable between the locking position and the gap position, the user can remove the support structure 12 from the remaining fastening tool 1 without tools, and then remove the pressing element 8, to replace the driver 5 or Parts of the drive device 7.

In order to drive the fastening element 2 into the work piece 4, the user brings the fastening tool 1 close to the work piece 4, wherein the support structure 12 is in its open position so that the support element 10 fastens the work piece 4, and the support protrusion is inserted into the recess of the work piece 4 15 in. Then, the user pulls the handle 19 of the control element 17 in the direction opposite to the driving direction, so that the support structure 12 moves relative to the housing 6 in the direction opposite to the driving direction 3, thereby reducing the difference between the support surface 16 and the pressing element 8. Then, the pressing element 8 is placed on the fastening element 2. The pressing element 8 abuts the workpiece 4 and moves relative to the housing 6 in a direction opposite to the driving direction 3. When the pressing element 8 is in the pressing position, the driving operation of the fastening tool 1 is released. At this moment, the fastening tool 1 is ready to drive the fastening element 2 (which is now set in the guide groove 9) into the workpiece 4. To release the fastening tool 1 from the workpiece 4 later, the user can push the control element 17 back in the drive direction 3 to its open position.

In order to access the pressing element 8, for example to remove it from the fastening tool 1, the locking element 25 in FIG. 5 is turned clockwise to its clearance position. Then, the control element 17 is pushed further forward in the driving direction 3 to its release position. Since the guide element 24 is no longer engaged with the control arm 23, the support structure 12 can move further relative to the housing 6 in the driving direction until it is completely removed from the housing 6. In order to subsequently mount the support structure 12 to the housing 6, attach the support structure 12 to the housing 6 so that the carriage 20 slides backwards in the rail 21 in the direction opposite to the driving direction 3 until the control arm 23 abuts Lean on the guide element 24 as shown in FIG. 6. Then, the locking element 25 is turned to its locked position and the control element 17 is pulled back to its open position. At this moment, the fastening tool 1 is ready to be pressed on the workpiece 4.

For the purposes of illustration and description, the foregoing description of the exemplary implementation of the present invention has been given. The foregoing description is not intended to be exhaustive or to limit the present invention to the specific forms disclosed. Under the enlightenment of the above teaching, modifications and variations are possible, or can be obtained from the practice of the present invention. The described functions may be distributed among the modules, and these modules may be different from the modules described in the present invention in number and function distribution. In addition, the execution order of functions may be changed according to the embodiment. In addition, the embodiments are selected and described to explain the principle of the present invention and the practical application of the present invention, so that those skilled in the art can utilize the present invention in various embodiments and can make various modifications suitable for specific use. The scope of the present invention is defined by the scope of the attached patent application of the present invention and its equivalent solutions.

1: Fastening tool 2: Fastening element 3: Drive direction 4: Workpiece 5: Drive 6: Shell 7: Drive 8: pressing element 9: Guide slot 10: Support element 11: Pressing surface 12: Supporting structure 13: Support protrusion 14: positioning axis 15: recess 16: support surface 17: Control components 18: Leverage 19: handle 20: carriage 21: Orbit 22: mandatory guide 23: control arm 24: guide element 25: locking element 26: Latch

Other aspects and advantages of the fastening tools, related components and their methods of use will be apparent through the following descriptions given by examples only and with reference to the drawings.

Figure 1 shows a fastening tool with a supporting structure and a workpiece supported by the supporting structure.

Figure 2 shows the fastening tool shown in Figure 1 with the support structure in the closed position.

Figure 3 shows a side view of the fastening tool shown in Figure 1 with the support structure in the closed position.

Figure 4 shows the fastening tool shown in Figure 1 with the support structure in an open position.

Figure 5 shows a side view of the fastening tool shown in Figure 1 with the support structure in an open position.

Figure 6 shows the fastening tool shown in Figure 1 with the support structure in the released position.

Figure 7 shows a side view of the fastening tool shown in Figure 1 with the support structure in the released position.

1: Fastening tool

2: Fastening element

3: Drive direction

4: Workpiece

6: Shell

8: pressing element

10: Support element

12: Supporting structure

13: Support protrusion

15: recess

17: Control components

18: Leverage

19: handle

Claims (15)

A fastening tool for driving a fastening element into a workpiece in a driving direction, the fastening tool includes: case; A pressing element having a pressing surface, wherein when the fastening tool is pressed against the workpiece in the driving direction, the pressing element is relative to the housing in a direction opposite to the driving direction The body is movable; and A support structure, the support structure is mounted on the housing and extends along the pressing element in the driving direction, wherein the support structure is relative to the housing in one of a closed position, an open position, and a release position The space is movable, and wherein the support structure is removable from the housing from the release position. The fastening tool according to claim 1, wherein the support structure protrudes behind the pressing surface in the driving direction. The fastening tool according to claim 2, wherein the supporting structure includes a supporting element for fastening the workpiece. The fastening tool according to claim 3, wherein the supporting element includes a supporting surface for driving the fastening element into the workpiece in a direction opposite to the driving direction Support the workpiece. The fastening tool according to claim 4, wherein the supporting structure includes a supporting protrusion for engaging the workpiece or a recess in the workpiece, and wherein the supporting surface is provided on the supporting protrusion. The fastening tool according to any one of claims 1 to 5, wherein the support structure is movable relative to the pressing element in the driving direction. The fastening tool according to any one of the preceding claims, wherein the fastening tool further includes a control element for controlling the movement of the support structure relative to the housing. The fastening tool according to claim 7, wherein the control element has a first position, and in the first position, the control element positions the support structure in the closed position; and/or a second position In the second position, the control element causes the support structure to be in the open position; and/or the release position, in the release position, the control element releases the support structure to make the support structure Remove from the housing. The fastening tool according to claim 7 or 8, wherein the control element includes a lever hinged to the housing. The fastening tool according to any one of claims 7 to 9, wherein the fastening tool further includes a forcing guide for making the support structure in the closed position by the movement of the control element And the open position. The fastening tool according to claim 10, wherein the mandatory guide includes a control arm and at least one guide element, and the at least one guide element is engaged with the control arm so that the movement of the control arm causes the guide The movement of the components and vice versa. The fastening tool according to any one of claims 7 to 11, wherein the fastening tool further includes a locking element having a locking position and a clearance position, wherein, if the locking element is in the locking position, The locking element prevents the control element from moving to the release position, and wherein, if the locking element is in the gap position, the locking element allows the control element to move to the release position. The fastening tool according to claim 12, wherein the fastening tool further includes a stop element, wherein the locking element engages the stop element in the locking position, and wherein the locking element is The gap position passes through the stop element. The fastening tool according to claim 11, wherein the fastening tool includes the locking element according to claim 12 or 13, wherein the engaging element includes the stop element. The fastening tool according to any one of claims 12 to 14, wherein the locking element is manually movable between the locking position and the gap position.

Images