DE102017100089B4 - triggering device - Google Patents

Abstract

A power tool tripping device comprising: a housing; a trigger supported by the housing so as to move relative to the housing between an OFF and an ON position; anda locking mechanism having a body including a movable locking member for locking the trigger in the ON position, the locking member being interposed between a locking position that locks the trigger in the on position and an unlock position that releases the trigger from the on position wherein the locking member is further arranged to move to the locked position upon activation or movement by a user and to return to the unlock position upon subsequent activation or movement by a user, characterized in that the trigger is a pawl for engaging the locking member in the locking position and the locking member is arranged so that it moves on subsequent activation or movement beyond the locking position and so moves the pawl and released from the locking member, so that the locking member can return to the unlocked position the triggering device a self-releasing it includes holding means that temporarily holds the pawl in an intermediate position released from the locking member to allow time for the locking member to return to the unlocking position, whereupon the retaining means releases itself so that the trigger can return to the OFF position, and wherein the self-releasing holding means comprises a sprung ball catch.

Description

FIELD OF THE INVENTION

The present disclosure relates generally to a trip device, and more particularly to a trip device that can impart a disabling function to various power tools.

BACKGROUND

Most electrical appliances, such as power tools, include release switches with a disabling function. Such a disabling function is generally initiated by depressing a locking mechanism upon activation of the power tool by depressing the trigger, and then releasing the disabling function by repressing the trigger by the operator.

Although a variety of power tools with tripping device commercially available, but these tripping devices have several disadvantages. The problems facing operators include power tool ergonomics, work safety and health. For example, the operator may inadvertently touch the trigger so that the trigger is released and the power tool is inadvertently deactivated. The operation may occasionally be interrupted.

In addition, the operator must twist his hand and maintain this position for a few seconds to depress the trigger to deactivate the power tool. The operator may therefore not be able to hold the power tool firmly and comfortably. He may accidentally drop the power tool or, even if he can hold the power tool firmly, suffers from muscle pain after completing certain activities.

In turn, one or more of these disadvantages may affect the power tool operator in efficiently performing his routine activities.

Usually, the operator grips the handle and presses the trigger down with his index finger to activate it, then presses down on the lock disabling mechanism with his thumb. The operator then has to press the trigger down with his index finger, instead of his thumb, to release the trigger. The operator can only press the trigger down with his index finger. However, the operator may accidentally touch the trigger so as to release the trigger lock and unintentionally disable the power tool. The operation can occasionally be interrupted during this time.

Furthermore, since the lock function must be released by pressing the shutter down by the operator, the operator must turn his hand and maintain this position for a few seconds. The operator may therefore not be able to hold the power tool firmly and comfortably. He may not be able to hold the power tool firmly and drop it, which can make operation extremely dangerous. Even if the user is able to hold the power tool firmly, he or she may suffer from muscle pain after completing certain activities. Such a configuration of the trigger and thus the operation is therefore undesirable in view of the experience of the user; there are also increased concerns about occupational safety and health.

The DE 103 32 241 A1 describes a hand-held implement with a control lever that can be operated to trigger the implement. In order to fix the operating lever, an operator can set a fixing device, in particular a setting lever, in a blocking position. The operating lever and the adjusting lever can each be pivoted about an axis of rotation for actuation.

The DE 10 2014 107 494 A1 describes a power tool with a Gasgebeschalter with a pusher, which is movable against a spring force and lockable in a closed position, and with a direction of rotation switch for controlling the direction of rotation. In this case, the accelerator switch is mechanically coupled to the direction of rotation switch, so that the accelerator switch can be locked in a closed position by means of the direction of rotation switch.

The DE 44 39 590 A1 discloses a hand tool machine having a pressure trigger switch and an actuator by the operation of which the pressure trigger switch can be locked in a position.

SUMMARY OF THE INVENTION

Certain embodiments of the present invention may be advantageous in minimizing at least some of these aforementioned problems with respect to the use of a power tool. The integration of a triggering device can improve a power tool, provide a better ergonomic design for the activation and deactivation of the blocking function and the experience of the operator with respect to the functionality of the power tool, the Improve work safety and operator health.

According to a first general form of the present invention, the triggering device for a power tool comprises: a housing; a trigger supported by the housing so as to move relative to the housing between an OFF and an ON position; and a locking mechanism having a body that includes a movable locking member for locking the trigger in the ON position, the locking member between a locked position that locks the trigger in the on position and an unlock position that releases the trigger from the on Position triggers, is movable; wherein the locking member is arranged to move to the locked position upon activation or movement by a user and to return to the unlocked position upon subsequent activation or movement by a user.

The trigger comprises a pawl for engaging the locking member in the locking position and the locking member is arranged to move beyond the locking position upon subsequent activation or movement thereby moving a pawl and releasing it from the locking member, such that the Locking member can return to the unlocked position.

Furthermore, the triggering device includes a self-releasing retaining means which temporarily holds the pawl in an intermediate position released from the locking member to allow time for the locking member to return to the unlocking position, whereupon the retaining means releases itself, causing the trigger to return to the OFF position can.

The self-releasing holding means comprises a sprung ball catch.

Selectively, the locking mechanism may include a cam for moving the pawl when the locking member is moved beyond the locking position upon subsequent activation or movement to permit release of the locking member from the locking pawl so that the locking member can return to the unlocked position.

Optionally, the trigger may include a portion for moving the pawl upon depression of the trigger to allow the locking member to disengage from the pawl so that the locking member may return to the unlocked position.

Advantageously, the locking member may be movable in a second direction which is substantially perpendicular to the direction of movement of the trigger.

Selectively, the locking mechanism may include a button for pushing down by a user in the second direction to move the locking member.

Optionally, the locking mechanism may comprise a button for shifting by a user in opposite directions perpendicular to the second direction for moving the locking member.

Preferably, the locking member may be associated with a V-shaped recess having two inclined surfaces which serve as an engaging member for an inner part of the knob to act as cams thereon such that the locking member is movable by the counter-sliding knob.

list of figures

• 1 is a front view of a power tool, which is equipped with a triggering device according to one of the six embodiments of the invention.
• 2 is a front view showing the isolated tripping device of 1 with the trigger and the locking mechanism;
• 3 is a view of the triggering device of 2 from the left;
• 4 is a view of the triggering device of 2 from the right;
• 5 is a plan view of the tripping device of 2 ;
• 6 is a bottom view of the triggering device of 2 ;
• 7 Fig. 11 is a perspective view of an entire image of a triggering device according to a first embodiment of the present invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocking position;
• 8th is a perspective view of an overall image of a tripping device according to the first embodiment of the invention, in which the Trigger in an ON position and the locking mechanism is in a locked position;
• 9 Fig. 12 is a schematic view of a triggering device according to the first embodiment of the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocked position;
• 10 Fig. 12 is a schematic view of a tripping device according to the first embodiment of the present invention, in which the trigger is in an ON position and the locking mechanism is in an unlocked position;
• 11 Fig. 10 is a schematic view of a tripping device according to the first embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is in a locked position;
• 12 Fig. 12 is a schematic view of a triggering device according to the first embodiment of the invention, in which the trigger is in a locked position and the user's finger is released from the locking mechanism;
• 13 is a schematic view of a tripping device according to the first embodiment of the invention, in which the Trigger in a locked position and the locking mechanism is located beyond a locking position;
• 14 Fig. 12 is a schematic view of a tripping device according to the first embodiment of the present invention, in which the trigger is in an ON position and the locking mechanism is released to an unlocking position;
• 15 Fig. 12 is a schematic view of a triggering device according to the first embodiment of the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocked position;
• 16 Fig. 12 is a schematic view of a triggering device according to the first embodiment of the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocked position;
• 17 is a schematic view of a triggering device according to a second, non-inventive embodiment, in which the trigger is in an ON position and the locking mechanism in an unlocked position;
• 18 Fig. 12 is a schematic view of a triggering device according to the second embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is in an unlocking position;
• 19 Fig. 12 is a schematic view of a triggering device according to the second embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is beyond a blocking position;
• 20 Fig. 12 is a schematic view of a triggering device according to the second embodiment not according to the invention, in which the trigger is in a locking position and the user's finger is released from the locking mechanism;
• 21 Fig. 12 is a schematic view of a triggering device according to the second embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is beyond a blocking position;
• 22 is a schematic view of a triggering device according to the second, non-inventive embodiment, in which the trigger is in an ON position and the locking mechanism is released to an unlocked position;
• 23 is a schematic view of a triggering device according to the second, non-inventive embodiment, in which the trigger is in an ON position and the locking mechanism is released to an unlocked position;
• 24 Fig. 12 is a schematic view of a tripping device according to the second embodiment not according to the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocking position;
• 25 Fig. 12 is a schematic view of a triggering device according to a third embodiment of the present invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocking position;
• 26 Fig. 13 is a schematic view of a tripping device according to the third embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is in an unlocked position;
• 27 Fig. 10 is a schematic view of a tripping device according to the third embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is in a locked position;
• 28 Fig. 10 is a schematic view of a tripping device according to the third embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is in a locked position;
• 29 Fig. 12 is a schematic view of a triggering device according to the third embodiment of the present invention, in which the trigger is in a locked position and the user's finger is disengaged from the locking mechanism;
• 30 Fig. 10 is a schematic view of a tripping device according to the third embodiment of the invention, in which the trigger is in a blocking position and the locking mechanism is beyond a blocking position;
• 31 Fig. 10 is a schematic view of a tripping device according to the third embodiment of the invention, in which the trigger is in a blocking position and the locking mechanism is beyond a blocking position;
• 32 Fig. 12 is a schematic view of a tripping device according to the third embodiment of the present invention, in which the trigger is in an ON position and the locking mechanism is released to an unlocking position;
• 33 Fig. 13 is a schematic view of a tripping device according to the third embodiment of the invention, in which the trigger is in an OFF position and the locking mechanism is in a locked position;
• 34 is a schematic view of a triggering device according to a fourth, not according to the invention embodiment, in which the trigger is in an OFF position and the locking mechanism in an unlocked position;
• 35 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is in an unlocking position;
• 36 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is in an unlocking position;
• 37 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is in an unlocking position;
• 38 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is beyond a locked position;
• 39 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is beyond a locked position;
• 40 Fig. 12 is a schematic view of a triggering device according to the fourth embodiment not according to the invention, in which the trigger is in a blocking position and the user's finger is released from the locking mechanism;
• 41 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is beyond a locked position;
• 42 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is beyond a locked position;
• 43 Fig. 13 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is released to an unlocking position;
• 44 Fig. 13 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is released to an unlocking position;
• 45 Fig. 13 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an ON position and the locking mechanism is released to an unlocking position;
• 46 Fig. 12 is a schematic view of a tripping device according to the fourth embodiment not according to the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocking position;
• 47 Fig. 13 is a schematic view of a tripping device according to a fifth embodiment of the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocked position;
• 48 Fig. 10 is a schematic view of a triggering device according to the fifth embodiment of the present invention, in which the trigger is in an ON position and the locking mechanism is in an unlocking position;
• 49 Fig. 12 is a schematic view of a tripping device according to the fifth embodiment of the present invention, in which the trigger is in an ON position and the locking mechanism is in a locked position;
• 50 Fig. 12 is a schematic view of a triggering device according to the fifth embodiment of the present invention, in which the trigger is in a locked position and the user's finger is released from the locking mechanism;
• 51 Fig. 12 is a schematic view of a tripping device according to the fifth embodiment of the invention, in which the trigger is beyond a locked position;
• 52 Fig. 12 is a schematic view of a triggering device according to the fifth embodiment of the present invention, in which the trigger is in an ON position and the locking mechanism is released to an unlocking position;
• 53 Fig. 12 is a schematic view of a triggering device according to the fifth embodiment of the present invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocking position;
• 54 Fig. 12 is a schematic view of a tripping device according to a sixth embodiment of the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocked position;
• 55 Fig. 12 is a schematic view of a tripping device according to the sixth embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is in an unlocked position;
• 56 Fig. 12 is a schematic view of a tripping device according to the sixth embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is in a locked position;
• 57 Fig. 12 is a schematic view of a tripping device according to the sixth embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is in a locked position;
• 58 Fig. 12 is a schematic view of a tripping device according to the sixth embodiment of the invention, in which the trigger is in a locked position and the user's finger is disengaged from the locking mechanism;
• 59 is a schematic view of a triggering device according to the sixth embodiment of the invention, in which the trigger is beyond a locking position;
• 60 is a schematic view of a triggering device according to the sixth embodiment of the invention, in which the trigger is in an ON position and the locking mechanism is released to an unlocked position;
• 61 is a schematic view of a triggering device according to the sixth embodiment of the invention, in which the trigger is in an OFF position and the locking mechanism is in an unlocked position.

The figures herein are for illustrative purposes only and are not necessarily drawn to scale.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Regarding 1 is an embodiment of a power tool 1 presented for drilling. In this example, the power tool includes: a main body 10 , a front handle 20 , a rear handle 30 , a control 40 such as drilling tools and a battery 50 which is arranged to be the operating element 40 drives. The main body 10 can continue a triggering device 60 which is arranged to be the operating element 40 Activated and deactivated, leaving the power tool 1 can be used for drilling activities.

With reference to the 2-6 is a detailed embodiment of the triggering device 60 shown a housing 62 , a pull trigger 64 , a locking mechanism 66 includes. Optionally, the triggering device 60 be implemented in each of the first to sixth embodiments.

With reference to the 7-15 is a first embodiment of a trigger device according to the invention 100 for a power tool 1 illustrated, comprising: a housing 110 , a trigger 120 from the case 110 is supported so that it is relative to the housing 110 moved between an OFF and an ON position; and a locking mechanism 130 with a body 133 , which is a movable locking member 134 for locking the trigger 120 in the ON position, wherein the locking member 134 between a locked position, the trigger 120 locked in the on position, and an unlock position, the trigger 120 released from the ON position, is movable; wherein the locking member 134 is arranged to move to the locked position upon activation or movement by a user and to return to the unlock position upon subsequent activation or movement by a user.

In this embodiment, the shutter closes 120 a pawl 122 for the intervention of the locking member 134 in the locked position and the locking member 134 is arranged so that it moves beyond the locked position on subsequent activation or movement, and thus the pawl 122 moved and out of the locking member 134 triggers, causing the locking member 134 can return to the unlock position.

Furthermore, the triggering device comprises 100 a self-releasing holding means 124 that the pawl 122 temporarily in one of the locking member 134 dissolved intermediate position stops to the locking member 134 to give enough time to return to the unlock position, after which the retaining means 124 even triggers, leaving the trigger 120 can return to the OFF position. The self-releasing holding agent 124 includes a spring-loaded ball catch 126 to the self-release of the holding means 124 to facilitate.

In this embodiment, the locking mechanism comprises 130 continue a cam 136 for moving the pawl 122 when the locking member 134 is moved on subsequent activation or movement beyond the lock position to the release of the locking member 134 from the pawl 122 to allow, so that the locking member 134 can return to the unlock position.

In an exemplary operation, the trigger is 120 initially resting in an OFF position, as in 9 shown. To operate the power tool 1 becomes the trigger 120 with the user's forefinger against the spring 121 pressed down until it reaches an ON position, and in turn becomes the pawl 122 from the trigger 120 in the direction of the housing 110 moves, as in 10 shown. Then the locking mechanism 130 from the user's thumb against the spring 131 pressed down, causing the locking member 134 through the pawl 122 is moved from an unlocked position to a locked position, so that the locking member 134 through the pawl 122 is locked, as in 11 shown. The trigger 120 is through the locking member 134 prevented from returning to the OFF position as in 12 shown, so the user now his finger off the trigger 120 and the locking mechanism 130 can solve.

When the user has completed his drilling activities and the power tool 1 will disable, the locking mechanism 130 again pressed down by the user, so that the locking member 134 moved beyond the locked position and in turn the cam 136 the pawl 122 continue towards the housing 110 moves, as in 13 shown. The pawl 122 is from the sprung ball catch 126 of the self-dissolving holding agent 124 temporarily held in an intermediate position, so that the locking member 134 no longer from the pawl 122 is locked and so due to in the compressed spring 131 stored force is released from the locked position back to the unlocked position, as in 14 shown. The trigger 120 no longer gets through the locking member 134 locked and can due to the compressed spring 121 stored force to return to the OFF position, as in 15 shown.

Regarding the 16-24 is a second non-inventive embodiment of a triggering device 200 for a power tool 1 illustrated, comprising: a housing 210 , a trigger 220 from the case 210 is supported so that it is relative to the housing 210 moved between an OFF and an ON position; and a locking mechanism 230 with a body 233 , which is a movable locking member 234 for locking the trigger 220 in the ON position, wherein the locking member 234 between a locked position, the trigger 220 locked in the on position, and an unlock position, the trigger 220 released from the ON position, is movable; wherein the locking member 234 is arranged to move to the locked position upon activation or movement by a user and to return to the unlock position upon subsequent activation or movement by a user.

The trigger 220 includes a latch and release device 236 , which is arranged so that upon activation or movement of the locking member 234 into a part of the body 233 the locking mechanism 230 engages the locking member 234 lock in the locked position, and upon subsequent activation or movement, the part of the body 233 the locking mechanism 230 triggers, so that the locking member 234 can return to the unlock position.

Preferably, the latching and releasing device comprises 236 a cam 238 , which is transverse to the direction of movement of the locking member 234 is mobile.

In an exemplary operation, the trigger is 220 initially resting in an OFF position, as in 16 shown. To operate the power tool 1 becomes the trigger 220 with the user's forefinger against the spring 221 pressed down until it reaches an ON position, as in 17 shown. Then the locking mechanism 230 from the user's thumb against the spring 231 pressed down, causing the latch and release device 236 from the case 210 is moved outward slightly, as in 18 represented, and in turn, the locking member 234 over the cam 238 out in the direction of the innermost of the latch and release device 236 moves, as in 19 shown. Then the latching and release device slightly towards the housing 210 moves and in turn the locking member 234 from the cam 238 blocked in a locked position, as in 20 shown, so the user now his finger off the trigger 220 and the locking mechanism 230 can solve.

When the user has completed his drilling activities and the power tool 1 will disable, the locking mechanism 230 pressed down again by the user so that the latch and release device 236 slightly towards the case 210 is moved, as in 21 shown. The locking member 234 no longer gets off the cam 238 blocked and is so due to in the compressed spring 231 stored force from the locked position back to the unlocked position, as in the 22-23 shown. The trigger 220 no longer gets through the locking member 234 blocked and may be due to in the compressed spring 221 stored force to return to the OFF position, as in 24 shown.

Regarding the 25-33 is a third embodiment of a triggering device according to the invention 300 for a power tool 1 illustrated, comprising: a housing 310 , a trigger 320 from the case 310 is supported so that it is relative to the housing 310 moved between an OFF and an ON position; and a locking mechanism 330 with a body 333 , which is a movable locking member 334 for locking the trigger 320 in the ON position, wherein the locking member 334 between a locked position, the trigger 320 locked in the on position, and an unlock position, the trigger 320 released from the ON position, is movable; wherein the locking member 334 is arranged to move to the locked position upon activation or movement by a user and to return to the unlock position upon subsequent activation or movement by a user.

In this embodiment, the locking member 334 in a second direction that is substantially perpendicular to the direction of movement of the trigger 320 is, mobile. Advantageously, the locking mechanism comprises 330 a button 340 for pushing down by a user in the second direction or for displacement by a user in opposite directions perpendicular to the second direction about the locking member 334 to move.

The locking member 334 is with a V-shaped recess 352 associated, the two inclined surfaces 353 and 354 having, as the engaging member 350 for an inner part of the button 340 serve as a cam 342 to act on it, so that the locking member 334 in turn, by the button pushed down or shifted in opposite directions 340 is mobile.

In this embodiment, the trigger comprises 320 a pawl 322 for the engagement of the locking member 334 in the locked position and the locking member 334 is arranged so that it moves beyond the locked position on subsequent activation or movement, and thus the pawl 322 moved and out of the locking member 334 triggers, so that the locking member 334 can return to the unlock position.

Furthermore, the triggering device comprises 300 a self-releasing holding means 324 that the pawl 322 temporarily in one of the locking member 334 dissolved intermediate position stops to the locking member 334 to give enough time to return to the unlock position, after which the retaining means 324 even triggers, leaving the trigger 320 can return to the OFF position. The self-releasing holding agent 324 includes a spring-loaded ball catch 326 to the self-release of the holding means 324 to facilitate.

In this embodiment, the locking mechanism comprises 330 continue a cam 336 for moving the pawl 322 when the locking member 334 is moved on subsequent activation or movement beyond the lock position to the release of the locking member 334 from the pawl 322 to allow, so that the locking member 334 can return to the unlock position.

In an exemplary operation, the trigger is 320 initially resting in an OFF position, as in 25 shown. To operate the power tool 1 becomes the trigger 320 with the user's forefinger against the spring 321 pressed down until it reaches an ON position, and in turn becomes the pawl 322 through the trigger 320 in the direction of the housing 310 moves, as in 26 shown. The button 340 the locking mechanism 330 is pushed down by the user or in one of the opposite directions, ie down (as in 27 shown) or upwards (as in 28 shown), against the springs 345 and 346 moved so that the cam 342 , which is the innermost part of the button 340 is on the two inclined surfaces 353 and 354 the V-shaped recess 352 of the engaging member 350 acts. Then the locking mechanism 330 through the engaging member 350 against the spring 331 moves, causing the locking member 334 through the pawl 322 is moved from an unlocked position to a locking position, so that the locking member 334 from the pawl 322 is locked, as in the 27-28 shown. The trigger 320 is through the locking member 334 prevented from entering the AUSTRIA To return to position as in 29 shown, so the user now his finger off the trigger 320 and the button 340 can solve.

When the user has completed his drilling activities and the power tool 1 The button will turn off 340 again pushed down or shifted by the user, so that the locking member 334 moved beyond the locked position and the cam 336 in return, the pawl 322 continue towards the housing 310 moved, as in the 30-31 shown. The pawl 322 gets temporarily from the sprung ball catch 326 of the self-dissolving holding agent 324 held in an intermediate position, so that the locking member 334 no longer from the pawl 322 is locked and so due to in the compressed spring 331 stored force is released from the locked position back to the unlocked position, as in 32 shown. The trigger 320 no longer gets off the locking member 334 blocked and may be due to in the compressed spring 321 stored force to return to the OFF position, as in 33 shown.

Regarding the 34-46 is a fourth, non-inventive embodiment of a triggering device 400 for a power tool 1 illustrated, comprising: a housing 410 , a trigger 420 from the case 410 is supported so that it is relative to the housing 410 moved between an OFF and an ON position; and a locking mechanism 430 with a body 433 , which is a movable locking member 434 for locking the trigger 420 in the ON position, wherein the locking member 434 between a locked position, the trigger 420 locked in the on position, and an unlock position, the trigger 420 released from the ON position, is movable; wherein the locking member 434 is arranged to move to the locked position upon activation or movement by a user and to return to the unlock position upon subsequent activation or movement by a user.

The locking member 434 is in a second direction that is substantially perpendicular to the direction of movement of the trigger 420 is, mobile. Advantageously, the locking mechanism comprises 430 a button 440 for pushing down by a user in the second direction or for displacement by a user in opposite directions perpendicular to the second direction about the locking member 434 to move.

The locking member 434 is with a V-shaped recess 452 associated, the two inclined surfaces 453 and 454 having, as the engaging member 450 for an inner part of the button 440 serve as a cam 442 to act on it, so that the locking member 434 in turn, by the button pushed down or shifted in opposite directions 440 is mobile.

The trigger 420 includes a latch and release device 436 , which is arranged so that upon activation or movement of the locking member 434 into a part of the body 433 the locking mechanism 430 engages the locking member 434 lock in the locked position, and upon subsequent activation or movement, the part of the body 433 the locking mechanism 430 triggers, so that the locking member 434 can return to the unlock position.

Preferably, the latching and releasing device comprises 436 a cam 238 , which is transverse to the direction of movement of the locking member 434 is mobile.

In an exemplary operation, the trigger is 420 initially resting in an OFF position, as in 34 shown. To operate the power tool 1 becomes the trigger 420 with the user's forefinger against the spring 421 pressed down until it reaches an ON position, as in 35 shown. Then the button will turn 440 the locking mechanism 430 pushed down by the user or in one of the opposite directions, ie downwards (as in FIG 36 shown) or upwards (as in 37 shown), against the springs 445 and 446 moved so that the cam 442 , which is the innermost part of the button 440 is on the two inclined surfaces 453 and 454 the V-shaped recess 452 of the engaging member 450 acts. Then the locking mechanism 430 through the engaging member 450 against the feathers 431 and 432 moves, causing the latch and release device 436 from the case 410 is moved outward slightly, as in the 36-37 represented, and in turn, the locking member 434 over the cam 438 out in the direction of the innermost of the latch and release device 436 is moved, as in the 38-39 shown. Subsequently, the latching and releasing device 436 slightly towards the case 410 moves and in turn the locking member 434 from the cam 438 locked in a locked position, as in 40 shown, so the user now his finger off the trigger 420 and the locking mechanism 430 can solve.

When the user has completed his drilling activities and the power tool 1 The button will turn off 440 again pushed down or moved by the user, so that the latch and release device 436 slightly towards the case 410 is moved, as in the 41-42 shown. The locking member 434 no longer gets off the cam 438 blocked and so due to in the compressed springs 431 and 432 stored force from the locked position back to the unlocked position, as in the 43-45 shown. The trigger 420 no longer gets off the locking member 434 blocked and may be due to in the compressed spring 421 stored force to return to the OFF position, as in 46 shown.

Regarding the 47-53 is a fifth, inventive embodiment of a triggering device 500 for a power tool 1 illustrated, comprising: a housing 510 , a trigger 520 from the case 510 is supported so that it is relative to the housing 510 moved between an OFF and an ON position; and a locking mechanism 530 with a body 533 , which is a movable locking member 534 for locking the trigger 520 in the ON position, wherein the locking member 534 between a locked position, the trigger 520 locked in the on position, and an unlock position, the trigger 520 released from the ON position, is movable; wherein the locking member 534 is arranged to move to the locked position upon activation or movement by a user and to return to the unlock position upon subsequent activation or movement by a user.

In this embodiment, the trigger comprises 520 a pawl 522 for the engagement of the locking member 534 in the locked position and the locking member 534 is arranged so that it moves beyond the locked position on subsequent activation or movement, and thus the pawl 522 moved and out of the locking member 534 triggers, causing the locking member 534 can return to the unlock position.

Furthermore, the triggering device comprises 500 a self-releasing holding means 524 that the pawl 522 temporarily in one of the locking member 534 dissolved intermediate position stops to the locking member 534 to give enough time to return to the unlock position, after which the retaining means 524 even triggers, leaving the trigger 520 can return to the OFF position. The self-releasing holding agent 524 includes a spring-loaded ball catch 526 to the self-release of the holding means 524 to facilitate.

In this embodiment, the trigger 520 still a part for moving the pawl 522 when pressing the shutter button 520 include, so that the locking member 534 from the pawl 522 can solve, so that the locking member 534 can return to the unlock position.

In an exemplary operation, the trigger is 520 initially resting in an OFF position, as in 47 shown. To operate the power tool 1 becomes the trigger 520 with the user's forefinger against the spring 521 pressed down until it reaches an ON position, and in turn becomes the pawl 522 through the trigger 520 in the direction of the housing 510 moves, as in 48 shown. The locking mechanism 530 gets from the user's thumb against the spring 531 pressed down, causing the locking member 534 from the pawl 522 is moved from an unlocked position to a locked position, so that the locking member 534 from the pawl 522 is locked, as in 49 shown. The trigger 520 is through the locking member 534 prevented from returning to the OFF position as in 50 shown, so the user now his finger off the trigger 520 and the locking mechanism 530 can solve.

When the user has completed his drilling activities and the power tool 1 wants to disable, will be the trigger 520 pressed down again by the user, leaving part of the shutter 520 the pawl 522 continue towards the housing 510 moves, as in 51 shown. The pawl 522 is from the sprung ball catch 526 of the self-dissolving holding agent 524 temporarily held in an intermediate position, so that the locking member 534 no longer from the pawl 522 is locked and so due to in the compressed spring 531 stored force is released from the locked position back to the unlocked position, as in 52 shown. The trigger 520 no longer gets through the locking member 534 blocked and may be due to in the compressed spring 521 stored force to return to the OFF position, as in 53 shown.

Regarding the 54-61 is a sixth, inventive embodiment of a triggering device 600 for a power tool 1 illustrated, comprising: a housing 610 , a trigger 620 from the case 610 is supported so that it is relative to the housing 610 moved between an OFF and an ON position; and a locking mechanism 630 with a body 633 , which is a movable locking member 634 for locking the trigger 620 in the ON position, wherein the locking member 634 between a locked position, the trigger 620 locked in the on position, and an unlock position, the trigger 620 released from the ON position, is movable; wherein the locking member 634 is arranged to move to the locked position upon activation or movement by a user and to return to the unlock position upon subsequent activation or movement by a user.

In this embodiment, the locking member 634 in a second direction, substantially perpendicular to the direction of movement of the trigger 620 is, mobile. Advantageously, the locking mechanism comprises 630 a button 640 to the Depressing by a user in the second direction or shifting by a user in opposite directions that are perpendicular to the second direction to the locking member 634 to move.

The locking member 634 is with a V-shaped recess 652 associated, the two inclined surfaces 653 and 654 having, as the engaging member 650 for an inner part of the button 640 serve as a cam 642 to act on it, so that the locking member 634 in turn, by the button pushed down or shifted in opposite directions 640 is mobile.

In this embodiment, the trigger comprises 620 a pawl 622 for the engagement of the locking member 534 in the locked position and the locking member 634 is arranged so that it moves beyond the locked position on subsequent activation or movement, and thus the pawl 622 moved and out of the locking member 634 triggers, so that the locking member 634 can return to the unlock position.

Furthermore, the triggering device comprises 600 a self-releasing holding means 624 that the pawl 622 temporarily in one of the locking member 634 dissolved intermediate position stops to the locking member 634 to give enough time to return to the unlock position, after which the retaining means 624 even triggers, leaving the trigger 620 can return to the OFF position. The self-releasing holding agent 624 includes a spring-loaded ball catch 626 to the self-release of the holding means 624 to facilitate.

In this embodiment, the trigger comprises 620 still a part for moving the pawl 622 when pressing the shutter button 620 so that the locking member 634 from the pawl 622 can solve, so that the locking member 634 can return to the unlock position.

In an exemplary operation, the trigger is 620 initially resting in an OFF position, as in 54 shown. To operate the power tool 1 becomes the trigger 620 with the user's forefinger against the spring 621 pressed down until it reaches an ON position, and in turn becomes the pawl 622 through the trigger 620 in the direction of the housing 610 moves, as in 55 shown. The button 640 the locking mechanism 630 is pushed down by the user or in one of the opposite directions, ie down (as in 56 shown) or upwards (as in 57 shown), against the springs 645 and 646 moved so that the cam 642 , which is the innermost part of the button 640 is on the two inclined surfaces 653 and 654 the V-shaped recess 652 of the engaging member 650 acts. Then the locking mechanism 630 through the engaging member 650 against the spring 631 moves, causing the locking member 634 through the pawl 622 is moved from an unlocked position to a locking position, so that the locking member 634 from the pawl 622 is locked, as in the 56-57 shown. The trigger 620 is through the locking member 634 prevented from returning to the OFF position as in 58 shown, so the user now his finger off the trigger 620 and the button 640 can solve.

When the user has completed his drilling activities and the power tool 1 wants to disable, will be the trigger 620 pressed down again by the user, leaving part of the shutter 620 the pawl 622 continue towards the housing 610 moves, as in 59 shown. The pawl 622 is from the sprung ball catch 626 of the self-dissolving holding agent 624 temporarily held in an intermediate position, so that the locking member 634 no longer from the pawl 622 is locked and so due to in the compressed spring 631 stored force is released from the locked position back to the unlocked position, as in 60 shown. The trigger 620 no longer gets through the locking member 634 blocked and may be due to in the compressed spring 621 stored force to return to the OFF position, as in 61 shown.

It is assumed that the triggering device, as in the 2-61 Although arranged to provide a disabling function, it may also be modified to implement an unlock function in the same manner or to simultaneously provide a disabling and unlocking function.

It is further to be understood that the trip device is not limited to a power tool such as an electric drill, so that the present invention can be applied to other low power or high power electric devices.

It is also to be understood that the tripping device is not limited to a power tool for drilling, so that the present invention is also applied to other electric appliances used in many applications and various other tool accessories, for example, cutting blades, grinding wheels, grinding tools, deburring tools, etc can be configured to perform a variety of tasks such as screwdriving, impact drilling, sawing, cutting, grinding, polishing, or burring, etc.

It is further to be understood that certain features of the invention, which are, for purposes of clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention, which for the sake of brevity are described in the context of a single embodiment, may also be provided separately or in any sub-combination.

Claims (7)

A power tool tripping device comprising: a housing; a trigger supported by the housing so as to move relative to the housing between an OFF and an ON position; and a locking mechanism having a body including a movable locking member for locking the trigger in the ON position, the locking member being disposed between a locking position that locks the trigger in the on position and an unlock position that releases the trigger from the on position. Position releases, is movable; the locking member being further arranged to move to a locked position upon activation or movement by a user and to return to the unlocked position upon subsequent activation or movement by a user, characterized in that the trigger comprises a pawl for engaging the locking member in FIG the locking position comprises and the locking member is arranged so that it moves on subsequent activation or movement beyond the locking position and so moves the pawl and released from the locking member, so that the locking member can return to the unlocked position, wherein the triggering device is a self-releasing retaining means comprising temporarily holding the pawl in an intermediate position released from the locking member to allow time for the locking member to return to the unlock position, whereupon the retaining means releases itself so that the trigger can return to the OFF position, and wherein self-releasing holding means comprises a sprung ball catch. Tripping device after Claim 1 wherein the locking mechanism includes a cam for moving the pawl when the locking member is moved beyond the locking position upon subsequent activation or movement to allow the locking member to disengage from the pawl so that the locking member can return to the unlocked position. Tripping device after Claim 1 wherein the trigger comprises a part for moving the pawl upon depression of the trigger so that the locking member can release from the pawl, so that the locking member can return to the unlocked position. Tripping device according to one of Claims 1 to 3 wherein the locking member is movable in a second direction that is substantially perpendicular to the direction of movement of the trigger. Tripping device after Claim 4 wherein the locking mechanism comprises a button for pushing down by a user in the second direction to move the locking member. Tripping device after Claim 4 wherein the locking mechanism comprises a button for shifting by a user in opposite directions that are perpendicular to the second direction for moving the locking member. Tripping device after Claim 6 wherein the locking member is associated with a V-shaped recess having two inclined surfaces which serve as an engaging member for an inner part of the knob to act as cams thereon such that the locking member is movable by the counter-sliding knob.

Images