JPS6362352B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an electric tensioner driving tool.

Powered tools for driving tensioners such as nails, steps, etc. are well known and widely used. Examples of tools of this kind that have been developed so far are U.S. Pat.
No. 3179866, No. 3434026 and No. 4005812
Disclosed in the issue. All of these are assigned to the applicant. Such tools generally include a housing having a handle portion and a head portion.
The head section contains a solenoid winding for accelerating the armature. Typically, the control circuit that energizes this solenoid winding is activated by a switch located on the handle. A magazine is supported by the handle and the bottom of the head portion for introducing the tensioner into the driving track for driving by a driving blade carried by the armature.

The present invention relates to an improvement of this type of tensioner driving tool, the object of the invention being to accommodate at least two different sized tensioners, including a relatively long tensioner and a relatively short tensioner. To provide a tensioner driving tool equipped with a magazine assembly having a guiding track structure, capable of driving tensioners of different sizes, light in weight, and easily and economically manufactured. That's true.

In order to achieve the above-described object of the present invention, the tensioner driving tool of the present invention accepts tensioners having at least two different sizes, including a tensioner with a relatively long dimension and a tensioner with a relatively short dimension. At least two types of tensioners can be mounted on the main body of the tool, and a magazine assembly is provided with a track structure that can guide the tensioner through the drive track and that can sequentially feed the loaded tensioner into the driving track. Its structural feature is that it can be driven in.

That is, in the tool of the present invention, the tensioner feed path is provided by the frame portion of the magazine assembly which is pivotally attached to the handle portion of the main body in order to feed the tensioner into the driving track provided in the head portion of the main body. a stem guide portion for slidably receiving a stem of the brace having a transverse diameter smaller than a transverse diameter of the head of the brace; by a track structure mounted within the frame member having at least one pair of intervening head guide portions located above and below the head guide portion and having a larger diameter than the trunk guide portion;
By forming upper guide means for guiding the head and upper part of the tensioner, guiding of different sized tensioners is made possible.

The above objects, other objects, advantages, and novel features of the present invention will become apparent from the detailed description of preferred embodiments with reference to the accompanying drawings.

Referring now to FIG. 1 of the accompanying drawings, there is shown a motorized tensioner driving tool constructed in accordance with the principles of the present invention and designated generally by the reference numeral 10.

The tool 10 is designed to be portable and held in the hand and includes a housing or body generally designated by the reference numeral 12. The housing has a head portion 14 and a handle portion 16, the handle portion being used to be grasped by the user's hand. A magazine assembly, designated by the reference numeral 18, is pivotally connected to the handle portion 16 by a pivot pin 20 and to the nose portion 14 by a longitudinal sliding connection, designated generally by the reference numeral 22. be done. Magazine assembly 18 has pushbutton 2
It is used to accommodate the tensioner to be driven in when the trigger of type 4 is manually operated.

Tool 10 is electrically actuated and includes a solenoid 26 (FIG. 2) in nose portion 14. A driving blade or driving body 28 is secured to the armature 30 of the solenoid 26. Armature 30 is biased to an upper position by spring 32. The driving blade 28 is attached to the front nose portion 3
6 and a rear nose portion 38 (FIG. 2) within a driving track 34 formed by a solenoid 26. As best shown in FIG. 3, a front nose portion 36 and a rear nose portion 38
(FIG. 20) has a concave hole 40 formed in these nose portions, so that it branches at the upper end adjacent to the solenoid 26. This is important. This is because nose portions 36 and 38 are secured to magazine assembly 18 by spring clips 42 and are pivotally attached thereto. When the magazine assembly 18 is pivoted, the driving blade 2 is moved within the driving track 34.
A recess 40 is required at the upper end of the track 34 to prevent the 8 from sticking. However, tool 10
When not activated, the driving blade 28 extends into a narrow portion of the driving track 34 so that the blade 28 is not held loose or damaged during transportation or handling of the tool 10.

The magazine assembly 18 has a lower V-shaped portion 46.
(FIG. 8). The top of the frame 44 is open and the frame 44 is open between the sides of the frame 44.
A channel 48 is attached to the. frame 4
4 includes two upwardly extending connecting portions 50 which are pivotally connected to a depending extension 52 of the handle portion 16 by pivot pins 20. The magazine frame 44 also has a flange 54 that stands upright.
at its front end, the flange 54 having a slotted hole 56 through which a fitting or pin 5 can be inserted.
8 is extended. The pin 58 is mounted within a hole formed in the depending portion 60 of the nose portion 14 so that the pin 58 cannot move relative to the housing;
This slotted hole 56 in the upright flange 54 allows the frame 44, and therefore the magazine assembly 18, to move vertically relative to the housing 12. This coupling at nose portion 44, in combination with the pivoting coupling at pin 20, allows for pivotal movement of magazine assembly 18 relative to housing 12 of tool 10. Thus, when tool 10 is placed on a workpiece, magazine assembly 18 pivots about pin 20 until pin 58 engages the lower end of slotted hole 56.

This pivoting movement of magazine assembly 18 prevents bouncing. This jump is caused by the reaction of the tool 10 after the tool 10 is launched. This reaction is often sufficient to cause the tool to dislodge or "jump" from the workpiece, resulting in incomplete driving of the tensioner into the workpiece.
The pivoting movement of the magazine assembly absorbs this recoil and prevents bouncing. This pivoting movement is also accomplished by pivoting only the portion of the assembly adjacent the driving track 34.

This pivoting movement of magazine assembly 18 is used to activate a security mechanism (FIG. 3) indicated generally at 62. The security mechanism 62 includes an elongated rod 64 including a lower end 66 that contacts the top of the channel 48 of the magazine assembly 18. The rod 64 is mounted within an elongated hole 68 formed in the nose portion 14 of the housing 12. The lower portion 70 of hole 68 is enlarged to accommodate a spring 72 surrounding rod 64. Spring 72 connects the upper end of lower portion 70 to channel 48.
, thereby providing a biasing force that pivots the magazine assembly 18 downwardly into the first position. In this first position of magazine assembly 18, security mechanism 62 prevents operation of tool 10 (14th
figure).

The security mechanism 62 includes a spring member 74 formed in the rod portion 64. The spring 74 includes a cam surface 76, a bent surface 78, an inclined portion 80, and a bottom edge 81. Bent portion 78 engages a corresponding bent portion 82 of the housing. The casing is this part 82
A hole 84 is provided adjacent to the trigger button 24, into which the trigger button 24 is slidably mounted. The trigger button 24 has a stop or flange 86 that engages the edge 81 of the spring portion 74 to prevent actuation.
, the button 24 is engaged with the small portion 90 of the hole 84.
and a flange 88 that prevents the material from falling out of the hole 84.

A plunger 92 is slidably mounted within trigger button 24 and includes a nose 94 that is used to engage plunger 96 of microswitch 98. Microswitch 98 is connected by leads 102, 104 (FIG. 1) to power cord 100, which is connected to a power source that provides energy to operate tool 10. The first spring 106 is connected to the trigger button 2
2 and below plunger 92, the spring biases plunger 92 into engagement with plunger 96 of microswitch 98. A second spring 108 surrounds the plunger 92 and engages the microswitch housing 98, biasing the plunger 92 and trigger button 24 away from the microswitch 98. Spring 1
08 is stronger than spring 106 and therefore, when not actuated, trigger button 24 and plunger 9
2 is biased by spring 108 out of engagement with plunger 96 of microswitch 98.

To energize the tool 10, the operator must first place the magazine assembly 18 on the workpiece, thereby pivoting the magazine assembly about the pivot pin 20 and moving the rod and spring 74 upwardly. No. This converts the cam surface 78 into the bent surface 82.
, thereby bending spring 74 and moving surface 81 out of engagement with flange 86 . The operator of tool 10 then presses trigger button 24 into contact with plunger 96 and switches 98.
can be energized to drive the blade 28 through the driving stroke.

As an additional security feature, the magazine housing 44 includes a grounding tab 112 that is connected to the screw 114 to ground the magazine assembly 18.
is electrically connected to ground clip 116 by. Grounding clip 116 is flexible and includes a flange 118, which flange 11
8 is connected to a ground wire 120 from power cord 100 (FIG. 3). Thus, as the magazine assembly 18 is pivoted, the ground clip 116 flexes to maintain the desired ground connection.

Referring now to magazine assembly 18, a novel pusher assembly 122, generally designated by the reference numeral 122, includes first and second identical elongated tubular members 1.
24 and 126, which in the preferred embodiment shown are halves of an elongated tube. These tubular portions 124 and 12
6 serves as a guide body for the tensioner 130 and pusher body 128 mounted within the magazine assembly 18. Push body 128 has a rectangular shape, and has legs 129 and inclined surfaces 131 and 132.
Contains. Push body 128 also includes a rectangular hole 134, which
8 can be slidably coupled to guide bodies 124 and 126.

To assemble pusher assembly 122, first
A push sleeve 136 is threaded around the first ends 138 and 140 of the guide bodies 124 and 126, respectively, and the sleeve 136 is inserted into the gap 1 with the guide bodies 124 and 126 slightly spaced apart.
42. (For example, the first
Please refer to FIGS. 7 and 18. ) spring 144
is disposed between and within guide bodies 124 and 126, the end of the spring engages stud 146, and stud 146 engages push body lock 1.
48 is coupled to ends 138 and 140 of guide bodies 124 and 126 and serves to maintain guide bodies 124 and 126 in a spaced apart relationship. In this case, push body lock 148 is secured in slots 151 and 152 formed in guide bodies 124 and 126, respectively.

Push body 128 is mounted within gap body 142 and is secured to stud 146 by spring 144.
is deflected away from the To mount pusher body 128 within gap body 142, a second pusher sleeve 150 is threaded through hole 134 and surrounds guide bodies 124 and 126 to couple them (see, e.g., FIG. 3). ).
The guide bodies 124 and 126 have flanges 1 at their ends.
54, these flanges are engaged by a push sleeve 150 to prevent the push body 128 from being deflected by the spring 148 beyond the length of the guide bodies 124 and 126.

A pusher assembly 122 is disposed within the frame 44 of the magazine assembly 18 and one end of the pusher assembly is supported by a pusher lock 148, which is removed through a hole 158 made in the channel 48. It is provided with a clip 156 that can be attached. Once the pusher assembly 122 is attached to the magazine assembly 18, the other end of the pusher assembly is attached to the pusher body 128.
is supported by leg portions 129 which engage V-shaped sections 46 of frame 44.

Prior to actuating tool 10, the bar of tensioner 130 is placed within magazine assembly 18. This is done such that the end 160 of the tensioner is engaged with and supported by the top of the V-shaped section 46 of the frame 44 (FIG. 7). Magazine assembly 18 is capable of holding two different sized tendons by using a track generally designated by reference numeral 164. The track 164 is defined by first and second guide members 166 and 168, which are secured to the channel 48 by a plurality of rivets 170. When secured to the channel 48, these guide members 166 and 168 form a small portion 171 and a large portion 172. Long tensioner 13
0 is used (see, for example, FIG. 7), the head 162 of the tensioner 130 extends over and is guided by a small portion 171 of the track 164. If it is desired to drive a short tensioner with tool 10, such as 130A of FIG.
72.

The tension members 130 and 130A are push bodies 128
is sent via the driving track 134. Once the last tensioner 130 or 130A has been driven in, the front end of the pusher body 128 is moved into the driving track 34 by the spring 144. and when the tool 10 is actuated, the driving blade 2
8 engages with one of the inclined surfaces 131 or 132 at the tip, and this engagement moves the pusher body 128 out of the driving track 34 against the biasing force of the spring 144. When the operator determines that the tensioner 130 or 130A will no longer be driven by the tool, the operator terminates operation of the tool 10 and inserts a new rod of the tensioner 130 or 130A into the magazine assembly 18. be able to.

Tool 10 can be used on grooved workpieces such as siding when it is desired to drive a tensioner into the grooves of such a workpiece. This is because the frame 44 of the magazine assembly 18 includes a V-shaped section 46. The lower end of the nose portion of the tool is also V-shaped and can be inserted into the groove of the siding. Since the work piece, such as the paneling, is made of a softer material than other materials, the carry-in blade 12
8 into the workpiece is often undesirable. This is because a dent will be formed. Accordingly, a shoe indicated generally by the reference numeral 178 is included. This shoe 178 has the same general shape as the magazine frame 44, and by using a stopper 180 formed on the inner circumferential surface of the shoe 178, the frame 44
is releasably fixed to. This stop 180 is inserted into a corresponding hole 182 made in the frame 44. Shoe 178 is made of a resilient material, thus allowing a spring-like connection when stop 180 is snapped into hole 180.

To prevent damage to the workpiece, the shoe 178 includes a raised portion 184 (e.g.
(See Figures and Figure 11). Shoe 178 is secured to frame 44 with raised portion 184 adjacent the nose (FIG. 11). In this position, this raised portion 184 engages the workpiece, keeping the nose portions 36 and 38 slightly spaced above the workpiece, so that the driving blade 28 will not move when its full stroke is completed. It should not engage with the workpiece and make no dents in the workpiece.

Tool 1 for flat workpieces without grooves
If it is desired to use 0, another shoe, such as show 178A, is used. This shoe 178A has a V-shaped inner circumferential shape that matches the frame 44, and the hole 1 of the frame 44.
The lower surface 184 of the shoe 178A is flat to allow the tool 10 to be placed on top of a flat workpiece.

It will be apparent from consideration of the technique described above that various modifications may be made to the invention. It is therefore to be understood that within the scope of the invention the invention may be practiced otherwise than as described.

[Brief explanation of drawings]

FIG. 1 is a side view of a tool constructed according to the principles of the present invention, FIG. 2 is an enlarged view of the nose portion of the tool of the present invention, FIG. 3 is a view taken along line 3-3 in FIG. 4 is a view taken along the line 4-4 of FIG. 3, FIG. 5 is a bottom view of the tool of the present invention, FIG. 6 is a view taken along the line 6-6 of FIG. 3, and FIG. Figure 3 is a view taken along line 7-7, Figure 8 is a view taken along line 8-8 of Figure 3, and Figure 9 is a view taken along line 8-8 of Figure 3.
The figure is a view taken along line 9-9 in Figure 3, Figure 10 is a view showing a part of the magazine housing and shoe, and Figure 11 is a view taken along line 9-9 of Figure 3.
The figure is a partial view of the shoe fixed to the magazine housing.
12 is a view taken along line 12-12 in FIG. 3, FIG. 13 is an exploded view of the pusher assembly, FIG. 14 is a partial view of the switch plunger and safety mechanism of the present invention, and FIG. A view taken along line 15-15 in the figure, FIG. 16 is a partial perspective view of the safety mechanism of the present invention,
FIG. 17 is a partial sectional view of the magazine assembly of the present invention, FIG. 18 is a partial view showing the magazine housing and the shoe attached thereto, and FIG. 19 is a partial view of the shoe intended to be attached to the magazine housing. FIG. 20, a partial view of another embodiment, is an enlarged exploded view of the nose assembly of the tool of the present invention. 10... Electric tension tool, 12... Housing,
14...Head part, 16...Handle part (nose part), 18...Magazine assembly, 20...
Pivot pin, 22...Slide joint, 24...
...Push button, 26...Solenoid, 28...
... Drive-in blade, 30 ... Armature, 34
... Drive trajectory, 36, 38 ... Nose part,
40... Recess, 44... Frame, 46... V-shaped portion, 48... Channel, 54... Flange, 56... Slot hole, 58... Pin, 62...
... Security mechanism, 64 ... Rod, 68 ... Hole, 72
... Spring, 74 ... Spring member, 76 ... Cam surface,
78...bent surface, 80...slanted portion, 81...
...bottom edge, 84...hole, 86...stopper, 88...
Flange, 92... Plunger, 96... Plunger, 98... Micro switch, 100... Power cord, 106, 108... Spring, 122...
Push assembly, 124, 126... tubular member,
128...Putsyuu body, 130...Kyushuko, 13
4... Hole, 142... Gap, 144... Spring, 146... Stud, 148... Push body lock, 150... Push sleeve, 154...
...Flange, 156...Clip, 164...Race, 166, 168...Guide member, 178...
Sew, 180...Stopping body, 184...Lifted part.

Claims (1)

[Claims] 1 In a tensioner driving tool for driving a tensioner having a head and a trunk into a workpiece, a housing 12 having a head portion 14 and a handle portion 16
and a magazine assembly 18 coupled in a manner such that it passes between the head portion 14 and the handle portion 16 of the housing 12, the head portion 14 having a driving body 28 and a magazine assembly 18 disposed therebetween. Drive means 26, 30, 3 for actuating the driving body 28
2 is provided, and the magazine assembly 18
Driving track forming means 36 and 38 are provided at the front end of the drive track forming means 36 and 38 for forming a driving track 34 aligned and extending in the operating direction of the driving body 28,
The magazine assembly 18 is connected to the driving track 3.
frame members 44 and 48 extending in a direction transverse to the direction of extension of frame members 44 and 48 forming a tensioner feeding path for sequentially feeding the tensioner into the driving track;
push means 12 for sequentially pushing the tensioner into the driving track along the tensioner feeding path;
2, and a lower guide means 46 provided along the lower part of the tensioner feeding path to guide the tip of the tensioner.
an upper guide means provided along the upper part of the tensioner feeding path for guiding the head of the tensioner; and an upper guide means provided along the tensioner feeding path between the lower guide means and the upper guide means. intermediate guide means for guiding the stem of the tensioner; said lower guide means being provided by a V-shaped lower portion 46 of said frame members 44, 48; Means include a track structure 166 mounted within the frame members 44, 48 and slidably receiving the head of the tensioner;
168, and the track structure 1
66, 168 includes a small portion 171 having a transverse diameter smaller than the transverse diameter of the head for slidably receiving the stem of the brace, and at least two types of brace heads having different lengths. and at least one pair of head guide portions 172 which are larger than the small portion 171 and are vertically spaced apart with the small portion 171 in between, for slidably receiving the small portion 171, and the intermediate portion guide means guides the elongated tube between the two. A pair of elongate tubular segments 124, 126 are provided, the pair of elongate tubular segments 124, 126 having a gap 142 formed therebetween for slidably receiving the stem of the brace. spaced apart within the frame members 44, 48, and the push means 122 is slidably received within at least the gap 142 to provide a biasing force toward the drive track 34. A tension element driving tool comprising a pusher body 128.