EP1916066A1 - Positioning device with activation switching for a hand-held fastening device - Google Patents

Abstract

The positioning device has release switching for a hand operated placing tool (10) operated by a release element (13) with a connecting unit (22) for the placing tool. A mechanical switch line (30) is provided from an actuating element (24) of a handle (21) to the releasing element for the releasing agent. A safety device (40) has a gravitation controlled intermediate element arranged between two actuators (34) of the switch line, which is positioned in a release switching state between the two actuators and which intercepts the switch line in an intercepting position.

Description

The present invention relates to a positioning device with tripping mediation for an actuatable via a trigger element hand-held setting tool referred to in the preamble of claim 1. Art Such positioning with triggering are z. B. used in overhead mounting with hand-held setting devices on high ceilings, where otherwise only work by means of working platforms or ladders would be possible. The setting devices that can be used with the positioning device can, for. B. with solid, gaseous or liquid fuels or with compressed or compressed air or electrically operated.

From the US 4,479,599 a positioning and release device for a combustion-powered setting tools is known, which has a connection means for a setting device, which is arranged at one end of an elongate handle in the form of a rod or a rod. The rod is axially displaceable relative to the attachment means in order to actuate the trigger switch of a setting device fixed to the attachment means via coupling means. To trigger the setting device on the attachment means the setting device must be attached with its mouth part to a ceiling and the user then the handle or the rod to be moved towards the ceiling. The positioning and triggering device further comprises a safety device which prevents triggering of the setting device in alignment with the mouth exactly in the direction of the gravitational force. The safety device includes a guided in a slant to the longitudinal axis of the rod channel in Anbindungsmittel guided ball which rolls in an orientation in the direction of gravitational force in the path of movement of the rod and a further movement of the rod relative to the carrier and thus triggering a arranged on the carrier Setting device prevents.

The disadvantage here, however, that the release of the setting device can only be reliably prevented when the positioning and release device is aligned with the setting device exactly to the mouth in the direction of gravitational force.

From the US Pat. No. 7,014,085 is an explosion-driven setting tool with a housing, with a projecting from this elongated handle and a ball-controlled safety device known that allows the release of the setting device only in a gravitational force opposite vertical or almost vertical orientation. The ball of the ball control is arranged in an annular receiving space between the handle and the housing.

A disadvantage of this setting tool, however, is that when pressing in the blocking position on the parts necessary for the blocking function high forces are exerted, which can lead to wear in the long term and can reduce the effectiveness of the Sicherheitsperperreinrichtung.

The object of the present invention is therefore to develop a positioning and tripping device of the aforementioned type, which avoids the disadvantages mentioned, which operates without interference and minimizes wear.

According to the invention, the stated object is achieved by a positioning device with a triggering device for an actuatable via a trigger switch hand-held setting device having the features of the independent claim. Accordingly, the safety device has a positionable between a first actuator and a second actuator of the shift string gravitationally controlled intermediate element, which is positioned in a triggering switching position coupling effect between the first actuator and the second actuator and interrupts the switching path in a disconnected position. In the tripping mediation position, the first and the second control element can thus be coupled via the intermediate element for relaying a switching movement, while in the interruption position a coupling of the first and the second control element is not possible. Gravity-controlled according to the invention means that the intermediate element is movable under the action of the gravitational force, when the relative position or orientation of the positioning device to the vector of the gravitational force changes.

The fact that no barrier-effective components are provided, which must absorb high contact forces, but only an interruption of the switching string, no significant wear of the safety device is expected more. The intermediate element is rather no longer in the disengaged position in the power flow of the switching string and is not loaded, as well as the second actuator and the On the other hand, it can not be prevented, but can be carried out freely and without resistance, without the second actuating element being reached by the force flow.

Advantageously, the first control element and the second control element along the longitudinal axis of the positioning device or the handle are slidably mounted in a guide, whereby the safety device can be easily integrated into the handle or in the connection means, without building radially.

It is also advantageous if at least in a starting position of the handle about a gap between the first adjusting element and the second adjusting element, a radially encircling space for the intermediate element is arranged in a housing part. This results in both the lifting of the positioning against the gravitational force to the engagement of the intermediate element in the control strand as well as lowering the positioning in the direction of gravity until the disengagement of the intermediate element from the control strand a constant critical angle. Thus, the inclination angle at which the triggering of a settlement is still possible is always the same, regardless of the previously described movement of the positioning device. The housing part may be part of the handle or a part of the connection means or both.

It is also advantageous if the intermediate element is designed as a ball and the first actuating element has a recess for the ball. In this way, the intermediate element can be easily moved by the gravitational force and at the same time caught well over the depression and held in position up to a certain angle of inclination.

In an advantageous embodiment, the depression is funnel-shaped and forms a funnel surface, wherein the funnel surface adjoins radially outward in the starting position of the handle flush with a conical surface delimiting the free space on the side facing away from the second actuating element. By this measure, the formed as a ball intermediate element can be easily transferred from the tripping mediation position in the interruption position and vice versa, without causing unwanted intermediate positions of the ball.

A favorable design of the ball-controlled safety device results when the funnel surface forms a first angle to a normal to the longitudinal axis, with a tolerance of +/- 2 degrees a second angle of the conical surface to the normal 30 ° whereby a maximum inclination of the positioning device to the vertical of also between 15 ° and 30 ° is possible, in which the setting device can still be triggered via the actuating element of the positioning device.

In an advantageous variant of the safety device, the intermediate element is designed as a swiveling body, which is mounted pivotably on the second actuating element via a swivel connection. As a result, a small contact force is made possible because of the available for actuating the setting device maximum stroke of the switching strand over the selected axial length of the pivot body adjustable.

In a technically easily implementable embodiment, the pivot connection is formed via a flexurally elastic bearing element, via which the pivoting body is connected to the second control element. The swivel body behaves like a pendulum and can pivot freely under the influence of the gravitational force. The flexurally elastic bearing element can be z. As a thread or thin wire.

Advantageously, the swivel body has a peripheral conical sliding surface on its axial end opposite the swivel connection, wherein a further circumferential conical sliding surface is provided at the end of the first control element opposite this axial end. The design of the conical surfaces with respect to their cone angle to the axial extent is preferably such that at an inclination angle of the positioning device in the range of 15 ° to 30 °, preferably 20 ° to the vertical, the intermediate element and the first actuator can slide past each other , which results in a critical angle in the range of 15 ° to 30 °, preferably 20 °, in which a setting operation on the actuating element of the positioning device can still be triggered.

In the drawings, the invention is shown in one embodiment.

Show it:

Fig. 1

a positioning device according to the invention with release mediation and with a hand-held setting device arranged on a connecting means in a non-pressed position, in a partially exploded representation,

Fig. 2

1 shows a detail of the positioning device according to the invention according to section II of FIG. 1 in longitudinal section in the unactuated position, in a vertical orientation,

Fig. 3

the detail of the positioning device of FIG. 2 in the actuated position,

Fig. 4

2 shows the detail of the positioning device of FIG. 2 in a direction inclined by 26 ° to the vertical,

Figure 5

1 shows a detail of a further positioning device according to the invention with triggering mechanism corresponding to detail II from FIG. 1 in longitudinal section in the unactuated position, in a vertical orientation,

Fig. 6

the detail of the positioning device of FIG. 5 in a direction inclined by about 18 ° to the vertical orientation.

FIGS. 1 to 4 show a positioning device 20 according to the invention with triggering arrangement for a hand-held setting tool 10, which is of modular design, for example. In the case of the complete positioning device 20, the parts 21 a and 21 b which can be seen from FIG. 1 are coupled together to a rod-like handle 21 on the coupling element 28 and on the counter-coupling element 29. The connection between the coupling element 28 and the counter-coupling element 29 is releasable, so that the positioning device 20 together and can be disassembled again. One or more, not shown in the figures, extension elements can be inserted between the two parts 21a, 21b of the rod-like handle 21. The longitudinal extent of the rod-like handle 21 defines a longitudinal axis A of the positioning device 20.

The setting device 10 reproduced in FIG. 1 has a setting mechanism arranged in a one-part or multi-part housing 11 for driving fastening elements into a construction element. To trigger a setting operation, a release switch 13 is arranged on a handle 12 of the setting device 10 on the setting device 10. On the setting device 10, the housing 11 upstream of a total of 14 designated mouth part is arranged, which is displaceable relative to the housing 11. When pressing the setting device 10 with the mouth part 14 to a structural element (not shown in the figures), the setting device 10 is transferred to a setting ready state, in which a setting operation can be triggered by the trigger switch 13. The positioning device 20 has a switching strand 30, via which the tripping switch from an actuator 24 of the rod-like handle 21 to the, z. B. trained as a trigger switch, triggering element 13 of the setting device 10 takes place. The actuator 24 thus acts as a remote trigger switch.

As can be seen from FIG. 1, the hand-held setting tool 10 is arranged on a connecting means 22 of the positioning device 20 and is reversibly fixed there via first and second holding means 38, 39. By loosening the screw means 37 of the second holding means 39, the setting tool 10 can be released again from the attachment means 22.

The first part 21 a of the rod-like handle 21 has at its end facing away from the coupling element 28 on a handle portion 23 and an actuating lever 24 designed as an actuating lever. As an alternative to an actuating lever but could also be z. B. an actuating sleeve can be used, the z. b. is guided on a trained as a hollow rod support member of the handle 21 and which would be displaceable parallel to the longitudinal axis A relative to the support element.

The actuator 24 cooperates via an actuator 33 with a multi-part, rod-shaped, first actuator 34 (shown as a two-part actuator) of the switching strand 30, which guided in a guide 32 in the handle 21 (in the parts 21 a and 21 b) slidably is and which extends into a housing part 25 of the connection means 22.

As can be seen from FIGS. 2 to 4, the switching strand 30 also has a second rod-shaped adjusting element 35. At a free end of the switching strand 30, a driver 53 is further arranged, which cooperates with the trigger switch 13 of the setting device 10 arranged on the attachment means 22. By way of a spring means 31, at least that part of the switching strand 30 which has the catch 53 is acted upon in the direction of its unactuated position shown in FIG. 1, in which the catch 53 does not press against the release switch 13 of the setting device 10.

The positioning device 20 further includes a safety device, generally designated 40, which prevents triggering of a positioning device 20 arranged on the setting device 10 via the actuating element 24 in a direction other than the legal orientation. For this purpose, a gap 26 is arranged between the first adjusting element 34 and the second adjusting element 35, in which an intermediate element 41 of the safety device 40 can engage in order to enable a release of the setting device 10 via an actuation of the actuating element 24. As in particular from FIG 2 it can be seen, at least in the initial position of the handle 21 laterally around the gap 26 around a guide 32 towards open space 36 is arranged. In a vertical orientation of the positioning device 20, ie in an orientation opposite to the effect of the gravitational force, as shown in Figures 2 and 3, the intermediate element 41, which is formed in this embodiment as a ball, lies in a funnel-shaped recess 42 on the The recess 42 has a funnel surface 43, which in the starting position of the handle 21 (FIG. 2) adjoins flush with a conical surface 46 delimiting the free space 36 in an axial direction. In this position, the intermediate element 41 is in a tripping mediation position 15 in which a release of the setting device 10 via an actuation of the actuating element 24 of the positioning device 20 is possible. The funnel surface 43 in this case has a first angle alpha to a normal N to the longitudinal axis A between 15 ° to 30 °, which corresponds to a tolerance of about +/- 2 ° a second angle beta, between the conical surface 46 and the Normal N to the longitudinal axis A is clamped. As a result of this configuration of the funnel surface 43, the intermediate element 41 or the ball is held in the depression 42 even in a position inclined to the vertical with an inclination angle of less than approximately 15 ° to approximately 30 °, so that it also inclines in such a manner inclined to the vertical Orientation triggering of the setting device 10 via the actuator 24 of the positioning device 20 is still possible. The angle alpha defines together with the angle beta the critical angle of the intermediate element 41, that is, the angle of inclination to the vertical, from which the intermediate element 41 from the gap 26 and thus can leave the tripping mediation position 15, when the positioning device 20 by a this critical angle exceeding tilt angle gamma (see Fig. 4) is tilted against the vertical.

In Figure 3, the positioning device 20 is with the setting tool 10 in a vertical orientation, which is indicated by the first arrow 17 and in which the mouth 14 of the setting device 10 is aligned vertically against the action of gravitational force. The setting tool is already pressed against a structural element or a ceiling and the actuator 24 has been manually operated by the user (not shown in the figure). About the actuator 33 of the actuating element 24, the first actuator 34 has been moved in the direction of the second arrow 18. This lifting movement is at least partially by the intermediate element 41, which is located in the tripping mediation position 15 in the intermediate space 26 between the first control element 34 and the second control element 35, to the second control element 35 and via this to the other switching strand 30th up to the driver 53 for the triggering element 13 on setting tool (see FIG. The second control element 35 has at its end facing the gap a spherical head surface 51 whose angle of curvature is smaller than the critical angle of the intermediate member 41 and as the angle alpha, whereby the intermediate element 41 and the ball can not be displaced laterally and the lifting movement of the first control element 34 can be safely forwarded to the second control element 35.

In Fig. 4, the positioning device 20 has been tilted with the setting tool by an angle of inclination gamma to the vertical (indicated by the arrow 17). The angle of inclination gamma is greater than the first angle alpha, which defines the critical angle of the intermediate element 41. Trained as a ball intermediate element 41 thereby rolled gravitationally controlled on the inclined plane formed by the funnel surface 43 and the conical surface 46 into the free space 36, where it is in its interruption position 16 for the switching strand 30. While actuating the actuating element 24, the first adjusting element 34 was in turn moved via the actuator 33 in the direction of the second arrow 18, but this lifting movement was no longer transferred to the second control element 35, since the first control element 34 with the second control element 35 no longer the intermediate element 41 is in operative connection. Rather, it remains even after the lifting movement of the first adjusting element 34 in the direction of the arrow 18 between the two adjusting elements 34, 35 a gap 27. The setting device can not in this interruption position 16 of the intermediate element 41 of the safety device 40 so via the actuator 24 of the positioning device 20th to be triggered.

FIGS. 5 and 6 show a variant of a safety device 40 according to the invention for the positioning device 20 from FIG. 1, which differs from the one previously described with respect to FIGS. 2 to 4 in that the intermediate element 41 is designed as a swiveling body there a pivot connection 45 is mounted on the second control element 35. The pivot connection 45 is formed via a flexurally elastic bearing element 44, via which the pivot body is connected to the second control element 35. Instead of a flexurally elastic bearing element 44 but z. B. the pivotal connection 45 by a pivot bearing, such. As a ball joint bearing, be formed, which is arranged between the second actuator 35 and the pivot body. The intermediate element 41 or the swivel body has, at its axial end opposite the swivel connection 45, a peripheral conical sliding surface 47, wherein the latter has an axial conical sliding surface 47 End opposite end of the first adjusting element 34, a further circumferential conical sliding surface 48 is provided. The conical sliding surfaces 47, 48 each end in a first and a second top surface 49, 50. Preferably, the conical sliding surfaces 47, 48 from their cone angles ago and the first and second top surface 49, 50 designed by its area size, the starting from a Inclination angle of the positioning device in a range of 15 ° to 30 °, preferably 20 ° to the vertical limit angle as the intermediate element 41 and the first actuator 34 can slide past each other and so the interruption position 16 (see Fig. 6) can take. In the case of an inclination angle smaller than the critical angle in the range of 15 ° to 30 °, or preferably of 20 °, the swiveling body, on the other hand, is in the triggering switching position 15 (see FIG. As can be seen from FIG. 5, in the tripping mediation position 15, the first adjusting element 34 with the first top surface 49 faces the intermediate element 41 or the swiveling body with the second top surface 50 at least partially along the longitudinal axis A. In the case of a manual actuation of the actuating element 24, therefore, a stroke movement of the first actuating element 34 can be transmitted via the intermediate element 41 to the second actuating element 35 and thus via the further switching strand 30 to the driver 53 so that the setting device 10 can be remotely triggered on the connecting means 22. For this purpose, the intermediate element 41 has, at its axial end facing the pivot connection 45, an axial end surface 52 which is concavely curved and can be brought at least partially into abutment with the convexly curved head surface 51 on the second control element 35 in the tripping mediation position 15. The end of the second adjusting element 35 with the crowned head surface 51 has a bell-shaped recess in order to facilitate the oscillation of the flexurally elastic bearing element 44.

However, if the positioning device 20 is tilted at an angle of inclination gamma to the vertical (indicated by the first arrow 17), which is greater than the critical angle, as shown in Fig. 6, then the pivoting body or intermediate element 41 pivots under the action of gravitational force in the direction of the third arrow 19 so far out of the gap 26, he occupies the interruption position 16. If the first adjusting element 34 is now actuated via the actuating element 24 and the actuator 33 and moved in the direction of the second arrow 18 (shown by dashed lines), then the first adjusting element 34 and the intermediate element 41 run past the conical sliding surfaces 47, 48 without an actuation of the second control element 35 takes place. The intermediate element 41 can be pivoted even further to the side by the moving first adjusting element 34. The switching strand is thus interrupted.

With regard to further reference numerals not further explained with reference to FIGS. 5 and 6, reference is made in full to the preceding description relating to FIGS. 1 to 4.

Claims (10)

Positioning device with triggering arrangement for a hand-operated setting device (10) which can be actuated via a triggering element (13), with a connecting device (22) for the setting device (10) which is located at one end of a rod-like handle (21) which defines a longitudinal axis (A), is arranged, wherein for the tripping mediation, a mechanical switching strand (30) by an actuating element (24) of the handle (21) to the trigger element (13) is provided, and with a safety device (40) for an orientation-dependent inhibiting the tripping mediation,
characterized,
in that the safety device (40) has a gravitationally controlled intermediate element (41) which can be arranged between a first control element (34) and a second control element (35) of the control armature (30) and which is in a triggering switching position (15) between the first control element (34) and the second control element (35) is positioned and in an interruption position (16) interrupts the switching strand (30). Positioning device according to claim 1, characterized in that the first adjusting element (34) and the second adjusting element (35) along the longitudinal axis (A) are displaceably mounted in a guide (32). Positioning device according to claim 1 or 2, characterized in that at least in a starting position of the handle (21) about a gap (26) between the first adjusting element (34) and the second adjusting element (35) a radially encircling space (36) for the intermediate element (41) is arranged in a housing part (25). Positioning device according to one of claims 1 to 3, characterized in that the intermediate element (41) is designed as a ball and that the first adjusting element (34) has a recess (42) for the ball. Positioning device according to claim 4, characterized in that the depression (42) is funnel-shaped and forms a funnel surface (43), wherein the funnel surface (43) lies radially outward in the initial position of the handle (21) flush with a the free space (36) on the side facing away from the second control element (35) side conical surface (46) adjoins. Positioning device according to claim 4 or 5, characterized in that the funnel surface (43) forms a first angle (alpha) to a normal (N) to the longitudinal axis (A), with a tolerance of +/- 2 degrees a second angle (beta ) of the conical surface (46) to the normal (N) to the longitudinal axis (A). Positioning device according to claim 6, characterized in that the first angle (alpha) is between 15 ° and 30 °. Positioning device according to one of claims 1 to 3, characterized in that the intermediate element (41) is designed as a swivel body, which is mounted via a pivot connection (45) pivotally mounted on the second adjusting element (35). Positioning device according to claim 8, characterized in that the pivot connection (45) via a flexurally elastic bearing element (44) is formed, via which the swivel body is connected to the second actuating element (35). Positioning device according to claim 8 or 9, characterized in that the pivoting body at its the pivot bearing (45) opposite the axial end has a circumferential conical sliding surface (47) and that at the axial end opposite end of the first actuating element (34) has a further circumferential conical Sliding surface (48) is provided.

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