JPS6311522B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Application of the Invention) The present invention provides a fastener driving or screwing tool that is loaded into a fastener driving or screwing tool equipped with a driver member that is driven by impact or rotation, and is continuously supplied to a driving section and driven out. The present invention relates to a fastener connecting body for connecting fasteners such as nails or screws.

(Prior art and its problems) Thin plastic tape or molten plastic is already supplied from both sides of a fastener shaft whose shaft portions are aligned parallel to each other as a fastener connection body used in this type of fastener driving tool or screwing tool. Connecting bodies having a structure in which the shaft parts are wrapped and connected using a plastic material are known, for example, from Japanese Patent Publication No. 43-25064 and Japanese Patent Publication No. 45-24737.

In this known connecting body, when the leading fastener on the connecting body fed into the driver guide is driven out, the connecting body piece is cut and driven out between it and the following fastener. At this time, the leading fastener receives a force that draws it in the direction of the following fastener due to the cutting resistance of the connecting body, and the tip of the fastener is tilted in the direction of the following fastener within the driver guide, and the fastener axis is driven out with an inclined position. This is dangerous. In addition, the tape-shaped connecting piece is soft and has almost no resistance, especially when the fastener shafts move toward each other. Vibration during transportation may cause entanglement of the shafts, which may impede the feeding operation of the fastener from the magazine to the driving position.

In addition, when the fastener is driven out of a molten plastic joint, the sleeve part surrounding the solidified plastic fastener shaft remains attached to the fastener shaft. They may get caught between the workpiece and the head of the fastener, break and scatter, or remain between the surface of the workpiece and the head, worsening the finished condition.

As another conventional connection body, a long sheet-like plastic plate material is bent and formed to have a U-shaped cross section, and the fastener shaft is held in the fastener receiving opening provided in the hinge pieces at both ends and connected. A connector having such a structure is known, for example, from Japanese Patent Publication No. 46-4040.

In this known connection, the fastener shaft is removed from the opening and punched out without cutting the connection piece, thereby avoiding damage to the surface of the workpiece due to broken pieces of the connection. However, when the fastener is driven out, the fastener axis tends to bias the hinge pieces of the connection body, thereby causing the fastener axis to move out of the opening, so that the fastener axis is influenced by the inclination of the pieces in the driving direction. This causes the tip to move within the punching path and cause it to tilt. If the size of the opening is set large to reduce this tendency, the fastener may become detached from the connector piece in the tool magazine or packaging box.

The feeding means for the connecting body in a tool using this connecting body has a structure having a claw member that engages with a part of the connecting body and presses it to feed it,
Furthermore, since the connecting body is usually made of a thin plastic sheet, it is easily deformed depending on the surrounding environmental conditions, and in some cases, the connecting body may be deformed to a state where it does not engage with the pawl member, thereby preventing the feeding operation of the connecting body. This method has the serious disadvantage that it does not reliably supply damaged connectors.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a new and improved fastener connection which allows each fastener supported by the connection loaded in a tool to be reliably fed to the punching section of the tool. There is a particular thing.

Another object of the present invention is to provide a fastener connection that allows the fastener to be driven vertically from the tool without the connection tilting the fastener axis as the fastener is driven out of the tool.

Another object of the present invention is to provide a fastener connector that is inexpensive in material cost, requires fewer processing steps to form the connector, and is inexpensive overall.

Another object of the present invention is to provide a fastener connection body that can be wound into a spiral shape with a small diameter in order to load a large number of fasteners into a magazine of a tool and to facilitate the loading operation. That's true.

Another object of the present invention is to provide a fastener connection which allows the fastener to be easily separated from the connection and to be driven out without cutting or breaking the connection when the fastener is driven out of a tool. It is.

(Technical Means for Achieving the Object) In order to achieve the above object, the fastener connection body of the present invention includes a fastener holding opening and a plurality of tongue-like shapes evenly arranged around the opening to hold the fastener shaft. a pair of retaining wall means comprising a pair of retaining wall means and spaced apart along an axis from each other; and vertical wall means coupled to each side edge of the retaining wall means for maintaining each retaining wall means spaced apart. a slit for separating the pair of retaining wall means and the vertical wall means from longitudinally adjacent portions of the connecting body; a connecting wall means connected to the other side edge of the retaining wall means and continuous in the longitudinal direction of the connecting body, and an engagement surface facing the longitudinal direction is provided on an edge along the longitudinal direction of the connecting wall means. A feeding notch is formed therein, and a continuous gap in the longitudinal direction is formed between the edge and the other side edge of the other retaining wall means, communicating the inside and outside of the connecting body. It is something to be prepared for.

(Operations and Effects of the Invention) In the connecting body of the present invention, since a gap is formed close to the connecting wall means provided with the feed notch, a part of the tool feeding device can be moved through the gap. It is possible to correct and support the wall means, especially the periphery of the feeding notch, from the inside of the connecting body, thereby making it possible to reliably feed the connecting body.
As a result, the connecting body can be manufactured from a thinner material, and a cheaper connecting body can be provided. Further, the fasteners supported and connected by the connecting body of the present invention can be attached to a plurality of tongue-shaped pieces formed in the fastener holding openings of a pair of retaining wall means spaced apart from each other in the punched-out portion of the tool. Therefore, the shaft is held evenly,
When being driven out, the tongue-like piece prevents the fastener from tilting, allowing it to be driven in a vertical position. Furthermore, the slit formed between the adjacent retaining wall means allows the fastener to be wound into a coil with a small radius, making it possible to load a large amount of fastener into the magazine of the tool.

(Example) The present invention will be described in detail below based on an example shown in the drawings.

As shown in FIG. 1, the connecting body 1 includes a pair of retaining wall means, an upper wall piece 2 and a lower wall piece 3 disposed opposite to the upper wall piece 2. The upper wall piece 2 and the lower wall piece 3 are kept apart from each other and maintained in a parallel state by a vertical wall piece 4 continuous with one side edge 2a, 3a of the pieces 2, 3. These upper and lower wall pieces 2, 3 and the vertical wall piece 4 are formed in a direction perpendicular to the longitudinal direction of the connecting body 1 formed between these and each wall piece adjacent along the longitudinal direction of the connecting body. They are separated from each other by slits 5.

On the other side edge 2b of the upper wall piece 2, there is an upper end edge 6a of a connecting wall means 6 that is continuous along the longitudinal direction of the connecting body 1.
are connected, whereby the wall pieces 2, 2 are connected and held in an adjacent relationship.

The lower end edge 6b of the connecting wall means 6 is arranged so as to form a gap with the other end edge 3b of the lower wall piece 3, and the end edge 6b has an engaging surface 7 for feeding the connecting body.
A notch 7 with a and 7b is formed at each connection pitch of the fastener.

An opening 8 for supporting a fastener shaft is formed in the upper wall piece 2 and the lower wall piece 3 at approximately the center thereof, and each fastener N has its shaft portion 1 in this opening 8.
0 is pierced and supported. The inner diameter of the opening 8 is slightly smaller than the outer diameter of the fastener shaft 10, so that the fastener N is held in the opening 8 sufficiently strongly by the elasticity of the material of the connecting body 1.

Furthermore, a plurality of opening slits 9, 9 are formed in each of the upper and lower wall pieces 2, 3, which are continuous with the opening 8 and extend radially from the center of the opening 8. A tongue-like piece 9a is formed around the opening 8 to maintain sufficient elasticity. As a result, the enlarged diameter head 11 of the fastener N can pass through the opening 8 by deforming the tongue piece 9a. The slits 9, 9 are evenly arranged around the opening 8, and the shaft portion 10 and head portion 11 of the fastener N are driven out by the slits 9, 9.
It is clear that the external force which is received from the opening 8 is applied evenly around the shaft and the head.

The slit 5 formed between the upper and lower wall pieces 2, 3 and the longitudinally adjacent portions of the vertical wall piece 4 is formed at the unjoined end edge 3b of the vertical wall piece 4 with respect to the lower wall piece 3. The portion near the end edge 3b continues in the longitudinal direction of the connecting body 1.

This allows the connecting body 1 to be stably wound into a spiral shape with a small diameter. That is, by winding the connecting wall means 6 on the inside as shown in FIG. 5, the slit 5 expands into a V-shape and can be wound in a spiral shape with the smallest inner diameter.

The lower end edge 6a of the connecting wall means 6 is arranged so that a gap is formed between it and the lower wall piece 3,
A holding piece extending from the tool feeding mechanism can enter the inside of the connecting body 1 through this gap.
Furthermore, a notch 7 provided with vertical engaging surfaces 7a and 7b facing the longitudinal direction of the connecting body 1 is provided on the lower edge 6a so as to engage a claw member of a tool feeding mechanism. It is set up to correspond to the pitch. This notch 7 is provided corresponding to the slit 5 formed in the direction perpendicular to the longitudinal direction of the connecting body 1, thereby making it easy to separate the long connecting body 1. be able to.

An example of a coupling body feeding mechanism used in a tool using the present coupling body 1 is shown in FIGS. 2 to 4a and 4b.

The feed mechanism 20 is attached to an actuation mechanism 21 that reciprocates along a supply passage 24 of a coupling body provided in the tool. The mechanism 20 includes a front end surface 2 that engages with an engagement surface 7a of the notch 7 of the connecting body 1.
2a and pivotally mounted pawl member 2
2, and a support member 23 that is arranged adjacent to the claw member 22 and further forward than the tip of the claw member 22, and has a support surface 23a formed by bending the tip upward. There is.

The distal end of the support member 23 is disposed inside the connecting body 1 from the gap of the connecting body 1, and is reciprocated along the gap of the connecting body 1 by the actuating mechanism 21, and is moved to the support surface 2.
3a supports the connecting wall means 6 from the inside of the connecting body 1.

The claw member 22 is reciprocated together with the support member 23, and when moving forward, the claw member 22 engages the engagement surface 7 of the notch 7.
a to move the connecting body 1 forward, and during the backward movement, the rear surface 22b of the claw member 22 abuts the engagement surface 7b on the opposite side of the notch 7 and is rotated clockwise. It comes off and slides on the surface of the connecting wall means 6 of the connecting body 1 and retreats.

As is clear from the above, since the connecting wall portion 6 of the connecting body 1 is supported from the inside by the support surface 23a of the feeding mechanism 20, the connecting wall portion 6 of the connecting body 1
Even if the nail member 2 is deformed, the nail member 2 is corrected.
2, and it is possible to eliminate feeding defects. Therefore, the connecting body 1 can be manufactured from a thin material, and the cost of the connecting body 1 can be reduced.

FIGS. 6a to 6e show the fastener driving state using the connecting body 1 of the present invention. A is shown in a state in which the tool is placed at the firing position and no impact force is applied by the driver 24 yet. In this state, the fastener N is supported in the opening 8 of each of the upper and lower wall pieces 2 and 3 of the connecting body 1 with the lower surface of the head 11 approaching the upper surface of the upper wall piece 2.

When the impact force from the driver 24 is applied to the head 11, the fastener N moves through the opening 8 of the connecting body 1 into the shaft portion 10.
is moved toward the sliding tip. The head 11 of the fastener N touches the periphery of the opening 8 of the upper wall piece 2 and bends the tongue piece 9a of the opening 8 downward while closing the opening 8.
Go inside (see figure b).

Further, due to the impact force of the driver 24, the head 11 of the fastener N completely expands the opening 8 of the upper wall piece 2 and passes through the opening 8 of the upper wall piece 2. During this time, the shaft portion 10 of the fastener N slides and moves in the opening 8 of the lower wall piece 3 (see figure c).

As the driving of Fastener N progresses further, the head 1
1 hits the lower wall piece 3, spreads out the tongue piece 9a of the opening 8, and enters the opening 8 (see figure d).

Finally, the head 11 passes through the opening 8 of the lower wall piece 3, and the fastener is completely separated from the connecting body 1 and driven out into the material to be driven (see figure e).

During each of the above states, the openings 8 in each of the upper and lower wall pieces 2 and 3
The external force exerted by the tongue-like piece 9a on the shaft 10 and head 11 of the fastener N does not cause the fastener N to incline because it acts evenly around the shaft 10 and head 11.

The connecting body 1 of the present invention is preferably manufactured from a thin long plastic sheet in terms of cost.
FIG. 7 shows how it is made from a plastic sheet.

A long sheet 25 extending along the connection direction of the fasteners is used as the material of the connection body, and the sheet 25 is provided with openings 8 having radial opening slits 9, 9 at intervals of the connection pitches of the fasteners along the longitudinal direction. In order to partition the opening 8 along the longitudinal direction, slits 5, 5 formed between the openings 8, 8 and perpendicular to the longitudinal direction are punched out, thereby forming tongue-like pieces 9a, 9a around the opening. is formed, and a notch 7 is further formed at one longitudinal edge. By bending this on a line 26 along the longitudinal direction of the sheet 25, the connecting body 1 shown in FIG.
is formed. A fastener connection body is completed by inserting and supporting a fastener shaft into the opening 8 of this connection body 1.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the fastener connection body of the present invention, FIG. 2 is a perspective view showing an example of a tool feeding mechanism using the fastener connection body of the present invention,
Figure 3 is a cross-sectional front view of Figure 2, Figure 4a,
Fig. 5 is a perspective view showing a state in which the fastener connecting body of the present invention is wound in a spiral shape;
6a to 6e are front views showing the state of driving the fasteners into the fastener connection body of the present invention, FIG. 7 is a plan view showing a plastic sheet before being formed into the fastener connection body of the present invention, and FIG. FIG. 3 is a perspective view showing a molded connector with no holes inserted therethrough. DESCRIPTION OF SYMBOLS 1... Fastener connection body, 2, 3... Retaining wall means, 4... Vertical wall means, 5... Slit, 6...
Connecting wall means, 7... Notch for feeding, 8... Opening, 9... Opening slit, 9a... Tongue-shaped piece.

Claims (1)

[Claims] 1. A pair of retaining wall means comprising a fastener retaining opening and a plurality of tongue-like pieces evenly arranged around the opening for retaining the fastener shaft, the retaining wall means being spaced apart from each other along the shaft; vertical wall means coupled to each side edge of the retaining wall means to keep the retaining wall means separated, and partitioning the pair of retaining wall means and the vertical wall means with longitudinally adjacent portions of the connector; and a connecting wall means connected to the other side edge of one retaining wall means and continuous in the longitudinal direction of the connecting member for interconnecting the respective retaining wall means adjacent in the longitudinal direction of the connecting member. A feeding notch having an engaging surface facing the longitudinal direction is formed at the edge along the longitudinal direction of the connecting wall means, and the edge and the other side of the other retaining wall means are formed. A fastener connection body characterized in that a continuous gap is formed in the longitudinal direction between the ends and the inside and outside of the connection body are communicated.