JP5205921B2 - Connecting fastener - Google Patents

Description

  The present invention relates to a connecting fastener used for a fastener driving tool using air pressure, fuel gas, or the like as a drive source.

  A driving tool such as a nail driver for driving a fastener such as a nail or a driving screw uses a connected fastener in which a number of fasteners are connected in a magazine for continuous driving.

  Conventionally, as a connection form of the connection fastener, a straight system that connects straightly, a system that is formed in a straight staircase, a coil system that is wound in a coil shape, and the like are known.

  In addition to the wire connection method in which the shaft portions of each fastener are welded and connected with two parallel wires as a connection method for the fastener connection means, a plurality of fasteners are attached to a synthetic resin straight connection band. The holding piece protrudes in the same direction from the upper and lower ends of the synthetic resin connecting method and synthetic resin thin plate sheet-like connecting band, and the fastener is inserted into the upper and lower holding pieces and held. A so-called plastic sheet connecting method is known. For example, an example of a synthetic resin connection method is shown in Patent Document 1, and an example of a plastic sheet connection method is shown in Patent Document 2.

Furthermore, as a means for connecting fasteners, there is also known a structure in which upper and lower parts of a carrier having a complicated shape provided with a breakable upper part at the upper part of a cylindrical part into which a shaft part of the fastener is inserted are connected by a bridge. (See Patent Document 3).
JP 2003-301824 A JP 2000-240622 A Japanese Patent No. 2588812

  However, as a problem associated with the above-described connection method, in the connection fastener of the wire connection method, the interval between the two wires is fixed, and the fastener having a short axial length cannot be connected. In addition, since the wire is relatively easily deformed, there is a problem of tangling in which the tips of nearby fasteners are entangled.

  In addition, in the synthetic resin connection type connection fastener, there is a problem that the connection band cracks due to the impact repeatedly received when the fastener is driven due to the complicated shape of the connection band.

  Further, even with a plastic sheet-connected connecting fastener, a short fastener cannot be connected because the distance between the upper and lower holding pieces is constant.

  Furthermore, the connecting means of Patent Document 3 has a complicated shape as a whole, and can only be manufactured by injection molding.

  Moreover, as a problem regarding the connection form, only a straight type connection fastener can be used in a driving tool provided with a straight magazine, and a coil type connection fastener cannot be used. Conversely, in a driving tool having a cylindrical magazine, a coil-type connecting fastener can be used, but a straight connecting fastener cannot be used. In this way, since it is necessary to supply connection fasteners corresponding to the type of driving tool to be used, different connection facilities are required according to the connection form of the fasteners, the production quantity is dispersed, and the operation of each connection facility is performed. The rate is low and the manufacturing cost cannot be reduced.

  In the present invention, the fastener is connected by a cylindrical shaft guide made of synthetic resin and a belt-shaped connecting sheet, so that the foot is bent, the connection belt is cracked, and the short shaft fastener is not suitable for the fastener connecting method and form. It is an object of the present invention to provide a connection fastener that can solve problems such as adaptation at a time and at a low cost and is innovative in production.

  In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a plurality of fasteners each having a cylindrical shaft guide fitted to each shaft portion are connected via two upper and lower synthetic resin connection sheets, and the connection The sheet is arranged so as to be sandwiched from above and below the shaft guide.

  The invention according to claim 2 is characterized in that, in claim 1, the connection sheet is formed by alternately forming through holes through which the fasteners pass and connection portions formed so as not to bend in the width direction. And

  According to a third aspect of the present invention, in the second aspect of the invention, the connecting sheet is formed by alternately forming through holes through which the fastener passes and connecting portions formed to bend in the width direction. Features.

  According to the first aspect of the invention, a plurality of fasteners each having a cylindrical shaft guide fitted to each shaft portion are connected via two upper and lower synthetic resin connecting sheets, and the connecting sheet is connected to the shaft guide. Since the parts are arranged so as to be sandwiched from above and below, the shape of the parts is simple, so the molding is easy, and the manufacturing cost of the connecting fastener can be reduced. Further, since the connecting sheet is disposed so as to be sandwiched from above and below the shaft guide, the overall rigidity is increased, the connecting strength is high, and either a coil-shaped or stick-shaped connecting fastener can be formed depending on the number of connecting sheets inserted. For this reason, it is possible to manufacture a coil-shaped connecting fastener or a stick-shaped connecting fastener with the same equipment, and even a short fastener can be connected in a coil shape by changing the thickness of the shaft guide and the width of the connecting sheet, Since the fasteners are inserted into the shaft guide and aligned, there is no leg slack, etc. Also, the shaft guide and the connecting sheet are both simple in shape and can easily increase the strength according to the usage conditions, so there is also a problem such as cracking of the connecting band Therefore, workability is also improved. Further, a part of the shaft guide remains between the fastener and the workpiece after being driven to perform a washer function, thereby improving work efficiency.

  In addition, the nails and decorative nails used in the manufacture of caskets, Buddhist altars, etc., had a short length and had to be hand-made, and because they were short, they could not be connected. As for fasteners, the thickness of the shaft guide can be changed and the shape of the connecting sheet can be changed so that it can be connected in the form of a coil. The driving condition is good and the finish is beautiful.

  Moreover, according to invention of Claim 2, a connection sheet | seat is formed by alternately forming the through-hole which penetrates the said fastener, and the connection part formed so that it may not bend in the width direction. Since it becomes difficult to bend in the width direction, a stick-like connecting fastener can be obtained, and the same effects as described above can be obtained in terms of manufacturing cost reduction, compatibility with short fasteners, and workability improvement.

  According to the invention of claim 3, the connecting sheet is formed by alternately forming the through-hole through which the fastener passes and the connecting portion formed to bend in the width direction. Since it becomes easy to bend in a direction, it can be set as a coiled connection fastener, and the same effects as described above can be obtained in terms of manufacturing cost reduction, compatibility with short fasteners, and workability improvement.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  In FIG. 1, symbol A1 indicates a connecting fastener. In this connection fastener, a cylindrical shaft guide 2 is inserted into shafts of a plurality of fasteners, and these fasteners are connected through belt-shaped synthetic resin connection sheets 3 and 4. The connecting sheets 3 and 4 are disposed so as to sandwich the shaft guide 2 from above and below.

  The shaft guide 2 is made of synthetic resin such as polypropylene and polyethylene or aluminum, and has an outer diameter that is approximately the same as or slightly smaller than the diameter of the head 1a of the fastener 1, as shown in FIG. The inner diameter of the injection nose portion 5 provided at the tip of the fastener driving tool is set to be slightly smaller. Thus, the posture of the fastener 1 is controlled by the shaft guide 2 so as to be parallel to the axis of the nose portion when reaching the injection nose portion of a nailing machine or the like and driven by the driver 9. Here, a material that does not scatter when driven is selected as the material of the shaft guide.

  The connecting sheets 3 and 4 are thin belt-like sheets made of synthetic resin, and through holes 6b having the same size as the through holes 6a of the shaft guide 2 are formed at equal intervals, and slits are formed between the through holes 6b. The long hole 7 is formed. Connecting portions 8 are formed at both ends of the long hole 7 in the width direction. For this reason, the connection sheets 3 and 4 have a structure that does not bend in the width direction.

  When connecting the fastener 1, the through holes 6b of the connecting sheets 3 and 4 are aligned with the through holes 6a of the shaft guide 2, and the shaft portion 1b of the fastener 1 is press-fitted into these through holes 6a and 6b. Thereby, each fastener 1 is connected straightly via the connection sheets 3 and 4. A long hole 7 and a connecting portion 8 are arranged between the adjacent fasteners 1. Further, since each shaft guide 2 is sandwiched between upper and lower connecting sheets 3 and 4, sufficiently high connection strength is ensured, and since the structure does not bend in the width direction, the connecting fastener A 1 is a straight type (stick Type fastener).

  Next, when the connection fastener A having the above configuration is used, it is loaded into a straight magazine of a fastener driving tool. At this time, as shown in FIG. 5, the stepped portions 11 are formed oppositely on both side walls of the fastener supply passage 10 of the magazine, and the lower surface of the shaft guide 2 of the connecting fastener A1 is supported by the stepped portion 11.

  Further, as shown in FIG. 6, the feed claw 13 and the check claw 14 are disposed on the both side walls so that the magazine can protrude and retract, and the fastener 1 is fed back and forth by a feed device (not shown). When moving forward, it engages with the shaft guide 2 of the connecting fastener A1 and feeds only one fastener, and when retracting, the feed claw 13 retracts from the fastener supply passage 10 and at the same time the check claw 14 Enters the fastener supply passage 10 and engages the shaft guide 2 so that the connecting fastener A1 does not move backward. In this way, the leading fastener 1 is sent from the tip of the magazine to the injection nose portion 5 of the fastener driving tool. As shown in FIG. 4, the shaft guide 2 of the leading fastener 1 is formed to have substantially the same diameter as the inner diameter of the nose portion 5, so that the shaft guide 2 is stably held in the nose portion 5. The shaft portion is also held in the axial direction of the nose portion 5. In this state, when the fastener driving tool is activated and the driver 9 is driven as shown in FIGS. 7A and 7B to hit the head 1a of the fastener 1 with the tip, the fastener 1 moves downward. At this time, the connecting sheets 3 and 4 that connect the leading fastener 1p and the second fastener 1q are also pulled downward, but the second fastener 1q is stably supported by the step portion 11 of the fastener supply passage 10. Therefore, the connecting sheets 3 and 4 are surely cut and separated from the connecting portion 8 of the long hole 7 where stress tends to concentrate, and the posture of the leading fastener 1p is also stably held by the upper and lower shaft guides 2. , It does not tilt in the nose portion 5.

  Thus, the posture of the fastener 1 is controlled by the shaft guide 2 so as to be parallel to the axis of the nose portion when reaching the injection nose portion of a nail driver or the like and driven by the driver 9. For this reason, it is possible to achieve a good finish after driving and a reduction in driving load when nails and pins are driven straight.

  Normally, the fastener 1 is a concrete pin. However, when the fastener 1 is driven into the concrete, as shown in FIG. 8, the shaft guide 2 and the connecting sheets 3 and 4 separated from each other are integrated into the head of the concrete pin. It remains compressed between the part 1a and the concrete surface. For this reason, since the fragments of the connecting sheets 3 and 4 and the shaft guide 2 are not scattered and contaminated at the work site, the compressed shaft guide 2 and the connecting sheets 3 and 4 are made of synthetic resin. It is in close contact between the lower surface and the concrete surface in a compressed state, performs a washer function, and can well prevent rainwater and the like from entering the concrete pin holes.

  In addition, although the connection part 8 of the connection sheets 3 and 4 is formed in the both ends of the long hole 7, it is not limited to such an aspect. For example, a perforation may be formed. Further, grooves may be provided at regular intervals in the width direction of the connecting sheets 3 and 4 so that the groove portions are thin and easily broken. Further, since the connection sheets 3 and 4 are separate from the shaft guide 2 as compared with the conventional integral connection band, it is easy to select a material that is easily broken.

  Next, FIG. 9 and FIG. 10 show other embodiments of the connecting sheets 3 and 4 for connecting the fastener 1. The fastener 1 has a circular portion 16 having the same diameter as the shaft guide 2 and an adjacent circular portion 16. The connecting portions 8 that connect the two are made narrow, and these connecting portions 8 are formed along the connecting direction of the fastener 1. For this reason, the connection sheet | seats 3 and 4 have a structure which is easy to bend in the width direction.

  When connecting the fastener 1, as in the case of the straight type described above, the through holes 6b of the connecting sheets 3 and 4 are aligned with the through holes 6a of the shaft guide 2, and the shaft portion of the fastener 1 is press-fitted into these through holes. To do. Thereby, each fastener 1 is connected via the connection sheets 3 and 4. In addition, since the connecting portion 8 between the adjacent fasteners 1 is narrow and slightly longer, the connecting sheets 3 and 4 are easily bent in the width direction. Therefore, as shown in FIG. 11, the connection fastener A1 can be bent in a direction orthogonal to the connection direction and wound into a coil shape to produce a coil-type connection fastener A2. Since the connecting sheets 3 and 4 are arranged so as to be sandwiched from above and below the shaft guide 2, the rigidity is increased and the connecting sheets 3 and 4 can be wound in a coil shape.

  Next, when using the connected fastener A2 having the above-described configuration, in addition to coiling and loading into a cylindrical magazine, the fastener is fed, the fastener is supported in the fastener supply passage, is stably held in the nose portion, and driven. The reliable breaking and separation of the connecting portion, the material of the shaft guide 2, the possibility of changing the material, and the like are the same as in the above example.

  In addition, what is necessary is just to give the connection structure by the shaft guide 2 and the connection sheet | seats 3 and 4 to the upper part and the lower part of the fastener 1 to the long axis fastener 1 with a long axial length, as FIG. Although not shown, when the short shaft fastener is connected, the height of the shaft guide 2 may be lowered.

  If the connecting portions 8 of the connecting sheets 3 and 4 are shortened, the connecting sheets 3 and 4 are less likely to bend in the width direction, so that a straight type connecting fastener A1 as shown in FIG. 13 can be formed.

  According to the above-described connection configuration, since the connection sheets 3 and 4 are arranged so as to be sandwiched from above and below the shaft guide 2, the overall rigidity is improved and a large connection strength can be ensured. Since each fastener 1 is inserted into the shaft guide 2 and aligned, there is no leg slack or the like.

  Further, the shape of the shaft guide 2 is simple compared to the shaft guide of the prior art, and it is not necessary to connect the adjacent shaft guides 2 at the molding stage. It is obtained by cutting a long tube shape by molding. The connecting sheets 3 and 4 can also be easily manufactured by pressing. Thus, since the shape of the parts is simple, it is easy to form, so that the manufacturing cost of the connecting fastener can be reduced.

  In addition, straight type or coil type connecting fasteners A1 and A2 can be manufactured simply by changing the connecting sheets 3 and 4, and even for fasteners 1 of various sizes, the axial length and shaft diameter of the fastener 1 can be adjusted. By simply adjusting the thickness and inner diameter of the shaft guide 2 and the width of the connecting sheets 3 and 4, the connecting fastener can be manufactured without changing the equipment. Different types of connecting fasteners A1 and A2 can be produced in the facility. Therefore, productivity can be improved and the cost of the connecting fastener can be greatly reduced.

  Furthermore, both the shaft guide 2 and the connecting sheets 3 and 4 are simple in shape and can easily increase the strength according to the use conditions. Since the shaft guide 2 and the connecting sheets 3 and 4 are formed separately, they are adjacent to each other. Since the load is not directly applied to the shaft guide 2 of the fitting fastener 1, it is difficult for the connecting band to break.

  Furthermore, according to the connection configuration, the height of the shaft guide 2 can be changed corresponding to the axial length of the fastener, and the connection can be made in the same manner even when the fastener 1 is short. Further, the shaft guide 2 may be formed of a material that is easily broken by an impact. Thereby, the shaft guide 2 is broken and scattered when the fastener 1 is driven. Previously, the nails and decorative nails used in the manufacture of caskets and Buddhist altars had to be hand-made due to their short length and could not be connected due to their short length. However, in addition to being able to be connected, the shaft guide 2 is made of a material that scatters due to the impact at the time of driving, so that the driving state when driven into a spear or Buddhist altar is good and the finish is also beautiful.

  Therefore, an unprecedented innovative connecting fastener can be provided to the market.

The perspective view of one Embodiment of a connection fastener An exploded perspective view of a part of the connecting fastener A longitudinal sectional view of a part of the connecting fastener Sectional drawing which shows a state when a front fastener is sent in the nose part of a driving tool Sectional drawing which shows the connection fastener loaded in the fastener supply channel of a magazine Sectional drawing which shows the feed mechanism in the said fastener supply channel | path (A) (b) is explanatory drawing which shows the state which a top fastener is hit | damaged in a nose part, and is divided with the 2nd fastener Explanatory drawing which shows the state after driving in a fastener The perspective view of embodiment of other connection fasteners An exploded perspective view of a part of the connecting fastener The perspective view of the state which wound the said connection fastener in the shape of a coil Side view showing the coupling mode of the long shaft fastener Perspective view of straight type connecting fastener

Explanation of symbols

A1, A2 connecting fastener 1 fastener 2 shaft guide 3, 4 connecting sheet 6a, 6b through hole 8 connecting portion

Claims (3)

  A plurality of fasteners in which cylindrical shaft guides are fitted to each shaft portion are connected via two upper and lower synthetic resin connection sheets, and the connection sheets are arranged so as to be sandwiched from above and below the shaft guides. A featured fastener.   The said connection sheet | seat forms the through-hole which penetrates the said fastener, and the connection part formed so that it might not bend in the width direction by turns, The connection fastener of Claim 1 characterized by the above-mentioned. The connecting sheet is characterized by comprising forming a through hole through which the above fastener, and a connecting portion formed to bend in the width direction alternately connecting fastener according to claim 1.

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