CN110587547A - Device for driving a plurality of fasteners - Google Patents

Abstract

An apparatus for driving a plurality of fasteners includes a drive assembly having a push block, a flywheel, and a push-in base. The lifting base is configured to move between a first position where the flywheel is remote from the drive block and a second position where the flywheel is coupled to the drive block. The device also includes a work contact element adapted to move between an extended position and a depressed position. The locking arm is connected to the work contact element and is designed to move with the work contact element. The blocking arm is disposed in the path of travel of the push-in base when the work contact element is in the extended position.

Description

Device for driving a plurality of fasteners

Technical Field

The present application relates to the field of power tools and is directed to particular apparatus for driving fasteners into workpieces.

Background

The fastener is for example. As nails and staples, they are commonly used in construction, from artware to construction. While manually driving such fasteners into a workpiece is effective, users can quickly become fatigued, which requires a large number of fasteners and/or large fasteners to be driven into the workpiece. In addition, proper driving of large fasteners into a workpiece often requires more than one stroke with a hand tool.

In response to the shortcomings of manual driving tools, power-assisted devices have been developed to drive fasteners into workpieces. Contractors and craftsmen commonly use such devices to provide fasteners ranging from staples for small building operations to common staples for joists and other construction items. Traditionally, compressed air is used to power auxiliary (pneumatic) devices. However, other power sources have been used, such as DC motors.

Various safety features have been incorporated into pneumatic or other electronic nail guns. Such devices are commonly referred to as normally open contacts (AKE). The AKE is built into the nail gun model to prevent accidental firing of the nail gun. ATA is typically a spring loaded mechanism that projects outwardly from the nose area of the nail gun from which the nail is driven. In operation, the LFS presses against the workpiece to be driven. When the LFS is pressed against the workpiece, the LFS compresses the spring and produces an axial motion that is transferred to the trigger assembly. The axial movement is used to reconfigure the safety device, typically an anti-freeze device.

This would be advantageous since typical AKE assemblies in the past include a mechanical linkage between the AKE and the trigger, to provide that additional safety features are available that are not necessarily associated with the actuation of the trigger. It would also be advantageous if a safety feature interacted with the firing mechanism to block operation of the firing mechanism when the LFS is not depressed.

Disclosure of Invention

According to at least one embodiment, a device for driving a plurality of fasteners, a magazine adapted to store the plurality of fasteners, and an Eintreibbaugruppe adapted to provide an ejection force that ejects one of a plurality of fasteners from a magazine. The drive assembly includes a drive element configured to move along a path between a first position in which the drive assembly is prevented from providing an ejection force and a second position in which the drive assembly is configured to provide the ejection force. The device also has a working contact element and a blocking element connected to the working contact element. The work contact element is movable in a linear direction between an extended position and a depressed position. The blocking member is adapted to move in a linear direction when the work contact member moves in the linear direction. When the work contact element is in the extended position, the blocking element is disposed in the travel path of the drive element and prevents the drive element from moving to the second position.

In at least one embodiment, an apparatus for driving a plurality of fasteners includes a drive assembly having a push block, a flywheel, and a push-in base. The lifting base is configured to move between a first position where the flywheel is remote from the drive block and a second position where the flywheel is coupled to the drive block. The device also includes a work contact element movable between an extended position and a depressed position. The locking arm is connected to the work contact element and is designed to move with the work contact element. The blocking arm is disposed in a path of movement of the push-in base when the work contact element is in the extended position and prevents the push-in base from moving to the second position. When the work contact element is in the depressed position, the blocking arm is removed from the path of travel of the push-in base so that the push-in base can freely move to the second position.

In at least one embodiment, an apparatus for driving a plurality of fasteners includes a drive assembly having a push block, a flywheel, and a push-in footing having a first locking surface. The lifting base is configured to move between a first position where the flywheel is remote from the drive block and a second position where the flywheel is coupled to the drive block. The work contact element is movable between an extended position and a depressed position. The locking arm is connected to the work contact element and moves between a closed position and a bypass position when the work contact element is in the extended position and when the work contact element is in the designed depressed position. The locking arm has a second locking surface adapted to couple with the first locking surface of the drive base and to prevent the drive base from moving from the first position to the second position when the work contact element is in the extended position. The second blocking surface is designed to avoid coupling with the first blocking surface when the work contact element is in the depressed position. When the work contact element is in the extended position. The second blocking surface is designed to avoid coupling with the first blocking surface when the work contact element is in the depressed position. When the work contact element is in the extended position. The second blocking surface is designed to avoid coupling with the first blocking surface when the work contact element is in the depressed position.

Drawings

FIG. 1 is a perspective side view of an exemplary embodiment for a driver device having a fastening element for an Eintreibbaugruppe locking member;

FIG. 2 is a side cross-sectional view of the nose assembly of the driver device for the securing element FIG. 1 with one working contact element in an extended position and coupled to the plug assembly and the depth adjustment mechanism;

FIG. 3 is a side cross-sectional view of the nose assembly of the driver device for securing the element FIG. 1 with the work contact element in a depressed/retracted position;

FIG. 4 is a perspective view of the work contact element assembly taken away from the other element FIG. 2;

FIG. 5 is a perspective view of the depth adjustment mechanism of the other components, with FIG. 2 broken away;

FIG. 6 is a perspective view of the closure and locking assembly of the other components, FIG. 2 being separated;

FIG. 7 is a perspective view of the assembly connected to the work contact element of the depth adjustment mechanism, FIG. 5 and the cut-off and locking device FIG. 6;

FIG. 8 is a side sectional view of a locking arm with a shut off and a locking device FIG. 7 positioned at the collector for securing an element in combination with a pivoting Eintreibfurant;

FIG. 9 is an enlarged view of the locking arm of FIG. 8, when the work contact element is in the extended position;

fig. 10 is the locking arm fig. 9. When the work contact element is in the depressed position;

FIG. 11 is a cut-away perspective view of the working interface element and the locking device FIG. 7, with respect to the pivoting Eintreibfendant, when in the extended position;

FIG. 12 is a perspective view of the stop and lock assembly of FIG. 11 when the work contact element is in a depressed position;

fig. 13 is a cut-away perspective view and a blocking device view.

Detailed Description

FIG. 1 shows one embodiment of an apparatus 100 for driving fasteners, including a housing 102 and a means 104 for storing and feeding fasteners. The term "magazine" as used herein refers to any of the devices used to store and deliver fasteners, such as feeder 104. The driver housing 102 defines a handle portion 106, the trigger 108 extends from the handle portion 106, and the connector portion 110 and the push-in portion 112 are secured. The guide of the fastener 104 in this embodiment is biased to the fastener by a spring, for example. As nails or nails held in the box, or the clips are sequentially and continuously forced in a loaded position adjacent the push-in area 112. The docking area 110 may be used to connect a compressed air source or other power source (e.g., a battery) to the fastener-driving device 100.

Adjacent to the drive portion 112 and the staple cartridge 104 is a front end assembly 114. FIG. 2 shows a cross-sectional view of the nose assembly 114, a lower portion of the push-in portion 112, and an end of the staple cartridge 104. The nasal assembly 114 includes a working contact element (LFS) 120 adapted to slide along a nose piece 118 secured to the housing 102. The AKE120 is shown in FIG. 2 for axial orientation relative to the housing 102 and nose piece slide 118 between an extended position and is designed in a retracted/depressed position, as shown in FIG. 3. As previously mentioned, although the term AKE is used herein to refer to such a safety device that moves when in contact with a workpiece, it should be understood that LFS is commonly referred to by other names, such as "safety button".

As best shown in the separated view of fig. 4, LFS120 is connected to LFS arm 130 to form LFS assembly 121. In this embodiment, LFS120 is provided as a wire that is bent into a shape to form a blunt contact tip 122 between two ends 124 and 126 of the wire. One end 126 of the wireform is introduced into the AKE120 at the slot 130 of the AKE arm and is rigidly connected to the AKE-arm 130.

Still referring to fig. 4, the AKE-arm comprises 130 at one end 130 of the arm, oppositely positioned slots 132, and a circular guide 134. The circular guide 134 defines a bore 136 having threads disposed on an interior 136 thereof. At the end of the circular guide 134 of the AKE arm 130, an opening 138 is also formed.

Referring now to the embodiment of fig. 2 and 5, the AKE module 121 is coupled at a depth adjustment mechanism 141. The depth adjustment mechanism 141 has a dial 156 (see fig. 2), the dial 156 being connected to the sleeve 140 rotatably mounted on the centering lever 142. The centering rod 142 has a first cylindrical portion 144 connected to a second cylindrical portion 150. The second cylindrical portion 150 has a larger diameter than the first cylindrical portion 144, thereby forming a shoulder between the first portion 144 and the second portion 150. The centering rod 142 also has a journal 152 and a head 154.

The sleeve 140 is rotatable 142 on the centering rod, wherein the sleeve 140 is completely penetrated by the first cylindrical section 144 of the centering rod 142. The sleeve 140 has a cylindrical threaded section 146 and a polyhedral section 148. A thumbwheel 156 is slidably mounted to the polygon section 148. The dial 156 is disc-shaped with a knurled periphery. This allows the user to easily rotate the dial 156. Dial rotation 156 leads to rotation 140 of the sleeve relative to centering stem 142.

The sleeve 140 of the threaded section 146 is inserted into the AKE arm 130 of the circular guide 134 and screwed with the AKE arm 130 of the circular hole 136. Thus, rotation of the disk causes 156 the AKE arm 130, which moves linearly (i.e., axially) with the sleeve 140, to be screwed onto the sleeve 140 as long as the complementary threads 146 of the thread segments on the AKE of the circular lead threads 134.

Referring now to fig. 2 and 6, the depth adjustment mechanism 141 is rotatably coupled to a closure and occlusion device 161. As best seen in the separate view of fig. 6, the closing and blocking assembly 161 includes a closing element 160 and a blocking element 170. As will be described in greater detail below, the closure element 160 serves to prevent the AKE120 from being empty or containing substantially no designed fasteners once depressed by the staple cartridge 104. As will also be described in more detail below, the blocking element is designed to keep the AKE120 undepressed during the actual firing of an eintreibbauugruppe fastening element.

The embodiment disclosed 160 below the blocking element provides for pivoting of the arm about pivot axis 166 relative to the AKE assembly 121. Thus, the closing element may be referred to hereinafter as a "swing arm" 160. The blocking member 170 is provided as an arm that is not pivotably connected to the LFS assembly 121. As a result, the blocking element may be referred to hereinafter as a "locking arm" 170. Both the swing arm 160 and the latch arm 170 are used to move in a linear direction with the LFS to design 120 once the LFS is moved between the extended position and the depressed position.

Locking arm 170 includes a main portion 172 and an elbow 174 extending therefrom the main portion 172. The elbow 174 is connected to an extension 176, the extension 176 projecting outwardly from the body 172 in a generally vertical manner. Two locking fingers 178 are provided on the extension 176. The locking fingers 178 project outwardly from the extension 176 in a generally vertical manner. When the device 100 is in the position shown in fig. 4 and 7, one of the locking fingers 178 extends through the aperture 138 in the LFS assembly 121. The following explanation stands in more detail, the surface of the layer of fingers 178 providing the tip 179 is available, a portion 200 (see fig. 8) of eintreibbauugruppe to keep it in motion and provide a spray force to extinguish a fire from the fastener 100 of the device.

The locking arm 170 also has the design of 141 of the depth adjustment mechanism of 142 of the centering rod with a hole (not shown) 144 receiving the end of the first cylindrical portion thereon. The end of the first cylindrical portion 144 of the depth adjustment mechanism 141 is secured in the bore of the locking arm 170 such that the centering rod 142 is rigidly connected to the swing arm 170. The sleeve 140 of the depth adjustment mechanism 141 is rotatably captured in the centering rod 142 between the locking arm 170 and the second cylindrical portion 150 of the centering rod 142. In this manner, the sleeve 140 of the depth adjustment mechanism 141 is rotatably connected to the stop and block assembly 161. Furthermore, LFS assembly 121 is also connected to blocking and blocking assembly 161, since LFS assembly 121 is connected to depth adjustment mechanism 141, as seen with reference to fig. 3.

Referring again to fig. 6, the pivot arm 160 is connected to the locking arm 170 about pivot axis 166. As a result, one end of the pivot arm 160 has a hole that allows the pivot axis 166 to pass through the pivot arm 160. The opposite end of the pivot arm has a foot 162, the foot 162 adapted to move between a fired position and a closed position, the base having a surface similar to AKE 120. Couple and prevent the LFS from being depressed once in the closed position. Once there are only a few fasteners in the magazine, the foot 162 moves to the closed position.

Swing arm 160 is "unlocked" between the rear positions, as shown in fig. 2 and 3 showing the front and "locked" positions pivoting, as shown in fig. 7 and 8. A spring 168 is mounted on the pivot axis 166 and biases the pivot arm 160 against the unlocked position of fig. 2 and 3. A spring loaded idler pulley 158 in the magazine 104 forces the fastener toward the nose 114.

The AKE module is a unit of operation 121, a stop and block device 161, and a depth adjustment mechanism 141, all of which are coupled together and provide different functions for operation of the device 100. FIGS. 2 and 3 generally show the operation of these components as the LFS120 moves from an extended position to a retracted position. in FIG. 2, the LFS120 is in an extended position. Once the AKE120 is started from an extended position, the illustration shown in FIG. 2 is moved to a retracted position as shown in FIG. 3, moving the AKE-arm 130 and AKE120 in Eintreibgeh ä use and in a pull back in a linear direction 102. the AKE-arm 130 is connected to the sleeve 140 coupled to the low adjustment mechanism, so the sleeve 140 and AKE-arm also move together with 130. when the sleeve 140 is moved in a linear direction, the locking arm 170, pivot 166 and swing arm 160 become a stop and block device 161 move in a linear direction. since the foot 162 of the pivot arm 160 is in an unlocked position in FIG. 3, the pivot arm 160 is disposed in a fixed position relative to the flange 116, the pivot arm 160 is movable in a position relative to the pivot arm 116 and the pivot arm 120, the pivot arm can be moved in a downward direction, when the pivot arm 120 is moved to the nose section 100, the pivot arm 120, the pivot arm can be moved to a stop and the pivot arm 120, the pivot arm can be moved in a position, as illustrated in the pivot arm, and the pivot arm.

Fig. 8 shows a side view 100 of the fastening device, an explanation 100 of the general operation of the device being delivered. As shown in FIG. 8, the apparatus 100 includes a DC motor 202 having an Eintreibbaugruppe200 thereon, a flywheel 204, a Rammklotz206 and a knife 208. The flywheel 204 is disposed on a rotatable base 210 (highlighted in phantom in fig. 8) and is adapted to pivot about the base about a pivot axis 211. And (4) designing. The base 210 is designed in return for rotation about the pivot axis 212. Is designed and forced by the coupling 21 based on the form 214 of the electromagnetic coil between a first position along the pivot path 224, in which the Rammklotz206 of the flywheel 204 is disengaged, and a second position, in which the flywheel 204 and the Rammklotz206 are coupled to move. The base 210 is normally biased (z.b. by a spring) toward the first position and the actuator 214 supports movement toward the second position.

In operation, the user brings the AKE120 into contact with the workpiece and then pulls the trigger 108 to fire the fastener of the slave device. Once the user pulls the trigger 108, the DC motor 202 turns on and energy is transferred through the belt drive to the flywheel 204. Once a predetermined speed of the flywheel is reached, the solenoid 214 is energized. Once the solenoid 214 is energized, a plunger 216 connected to the solenoid 214 contacts the base 210, moving the plunger 216 forces the base 210 and the rotating flywheel 204 to pivot toward the plunger block 206. When rotating flywheel 204 contacts ram block 206, ram block 206 and associated blades 208 are pushed toward the nose. Once the stake block 206 and knife 208 are fired, the knife 208 encounters the fastener at the end of the staple cartridge 104 and drives the fastener 100 out of the tool. A similar arrangement is disclosed in U.S. patent application No.12/191,960, which is incorporated herein by reference in its entirety. Further, while the drive assembly of fig. 8 includes a DC motor and a flywheel, it should be understood that any of a variety of other drive assemblies are equally possible.

Referring now particularly to fig. 9-12, it is useful to provide a lockout lever 170 for the safety function 100 of the device, which prevents the device from cocking when the AKE120 is in an extended position. As shown in fig. 9 and 11, once AKE120 is in the extended position, fingers 178 of locking arm 170 are in a locked position that interferes with the pivot path of base 210. Thus, the solenoid plunger 216 contacts the base and causes the base to move in the direction of arrow 230 when the user pulls the trigger when the AKE120 is in the extended position. When this occurs, finger 178 of tip 179, however, Eintreibfendant 210 contact on surface 222 and further rotation 206 in the Rammklotzes direction in base 210 stops. Thus, once locking arm 170 prevents the flywheel from contacting ram block 206 in the closed position, preventing device 100 from ejecting the fastener.

FIG. 12 shows that the position 170 of the locking arm relative to the base 210 has not been moved by the user 108 with the shutter button as long as the AKE120 is in the depressed position. In particular, the latch arm movement 170 is in a linear direction (as indicated by the bypassed position of arrow 240 in FIG. 12) so long as AKE120 is depressed, where base 210 is not properly pivoted along its pivot path to interfere, in the embodiment of FIG. 12, finger 178 of latch arm 170 is aligned with notch 226 in base 210 once the latch arm is in the bypassed position. The slot 226 in the base 210 is configured and dimensioned to receive the finger 178 such that the finger 178 will fit into the slot without contacting the base 210.

With the bypass position shown in the latch arm 170 in fig. 12, the user may then be on a pull of the shutter 108, with the base 210 brought along by the actuator 214 forced along the pivot path. As shown in fig. 10 and 13, the 170 to 226 slot of the locking arm of the finger 178, upon insertion of the base 210, causes the total distance of the base along the pivot path as long as the base 210 is moved in the direction indicated by arrow 30 along the pivot path. Once the locking arm 170 is in the bypass position, he therefore does not interfere 210 with the movement of the base, and the flywheel 204 (rotatably attached to the base 210 is provided), can be moved into contact 206 with the Rammklotz, wherein the unit 100 is moved to the firing cue.

The collector and latch arms and the securing elements shown in the drawings and foregoing description have been described in detail and are intended to be illustrative only and not limiting in function. It is to be understood that only the preferred embodiment has been provided and that all modifications, alterations and other applications that come within the spirit of the invention are desired to be protected.

Claims (10)

1. Apparatus for driving a plurality of fasteners, the apparatus comprising: a magazine adapted to store a plurality of fasteners; an Eintreibbaugruppe adapted to provide an ejection force that ejects one of the plurality of box fasteners, the Eintreibbaugruppe having a second position designed to prevent the drive assembly from being designed to provide an ejection force by a drive element that is moved along a path between a first position that provides the ejection force, a workpiece contact element movable in a linear direction between an extended position and a depressed position, and when a work contact element, which is connected to the abutment element, is adapted in a linear direction, wherein the blocking element is arranged to be moved in the path of movement of the drive element and prevented by the drive element, and when the work contact element is in the extended position, the blocking element that is moved in the linear direction in the second position is moved when the work contact element is in the extended position.

2. A device according to claim 1, wherein the blocking member is adapted to move out of the path of movement of the drive element when the working contact element is in the depressed position.

3. The apparatus of claim 2, further comprising a trigger and an actuator, wherein the actuator is movable between a release position and a firing position, and wherein the actuator is adapted to move the firing position from the release position to the release upon urging the drive member to the second position.

4. A device according to claim 3, wherein the actuator is an electromagnetic coil adapted to contact a surface of the drive element.

5. The apparatus of claim 1, wherein the driver comprises an eintintifugame, wherein the eintintifugame is in a first position when a flywheel frame of one collector exits, and wherein the eintintifugame is in a second position when the flywheel is coupled to the collector block.

6. An apparatus for driving a plurality of fasteners, the apparatus comprising: one Eintreibbugruppe having an Eintreibblock, a flywheel and an Eintreibbument, wherein the Eintreibbument is movable between a first position in which the flywheel is removed from the Eintreibblock, and a second position in which the flywheel is coupled to the Eintreibblock, designed to and driving the foundation with a first blocking surface, a workpiece contact element movable between an extended position and a depressed position, and a blocking arm connected to the abutment element and arranged for movement between the extended position when the working contact element is in the extended position and a blocking position when the working contact element is in the bypass position of the depressed position, wherein the locking arm comprises a second locking surface wherein the second locking surface is designed to be coupled to the first locking surface of the Eintreibbument and for preventing the Eintreibbument from moving from the first position, the workpiece contact element is in the extended position, and wherein the second locking surface is designed to prevent the Eintreibbutinument from moving from the first position, to prevent said coupling when the working contact element is in the depressed position, is designed with a first locking surface.

7. The device of claim 6, wherein the second locking surface of the locking arm is disposed on a finger of the locking arm, the finger designed such that the locking arm fits into a slot in the push-in base when the locking arm is in the bypass position.

8. The device of claim 6, wherein the second locking surface of the locking arm is disposed on a finger of the locking arm, the finger designed to connect with a surface of the push-in base when the locking arm is in the blocking position.

9. The apparatus of claim 6, wherein the flywheel is rotatably mounted on the push-in base.

10. The device of claim 16, wherein the drive assembly further comprises an actuator configured to push the push-in base toward the second position when a trigger is pulled.