JP2013018071A - Driving tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving tool capable of reducing a possibility of damaging a critical component when falling, while maintaining a machine weight, workability and operability.SOLUTION: The driving tool 10 includes a nose part 13 for driving and guiding fasteners toward a material to be driven, a magazine 20 for continuously supplying the fasteners to the nose part 13, and a magazine foot 21 arranged protruding from the magazine 20 in the same direction as the nose part 13, wherein the magazine foot 21 is provided with an impact absorbing structure A for buffering the impact when falling.

Description

  The present invention relates to a driving tool, and more particularly to a driving tool characterized by a magazine foot provided at the rear end of a magazine.

  2. Description of the Related Art Conventionally, a driving tool is known in which a piston is driven in a cylinder by a combustion pressure of combustible gas or compressed air pressure, and a fastener is driven by a driver coupled to the piston.

  In such a driving tool, a nose portion in which an injection port for driving and guiding a fastener is formed is coupled to a lower portion of a housing that accommodates a cylinder, and a driver coupled to a piston is accommodated in the injection port. It is guided. On the rear side of the nose portion, a magazine that houses a large number of fasteners is connected. Fasteners are supplied from the magazine to the injection port of the nose portion, and the supplied fastener is driven out from the injection port to the workpiece by the driver.

  Further, as such a driving tool, there is known a tool in which a magazine foot protruding in the same direction as the nose portion is provided at the rear end portion of the magazine (see Patent Document 1). Since this magazine foot has the same degree of protrusion as the nose part, if the magazine foot is brought into contact with the driven material together with the nose part when the fastener is driven, the fastener can be driven stably. it can.

JP 2007-21607 A

  By the way, in the conventional driving tool, the impact at the time of dropping is transmitted to the entire machine, and thus the weakest part in strength is broken. At this time, if a handle containing various safety parts such as a board, an igniter, a trigger, and a contact arm is damaged, the machine must be completely disassembled to replace the parts. For this reason, when damage to important parts such as a handle occurs at the work site, the work must be interrupted, and the part replacement cost and labor cost for parts replacement become expensive, increasing the burden on the user.

  In order to solve these problems, it is conceivable to increase the strength so that important parts are not damaged. However, if the strength is increased, the weight of the parts increases and the size of the parts increases, so that workability in normal operations is increased.・ Demerits that sacrifice operability occur.

  Therefore, an object of the present invention is to provide a driving tool that can reduce the possibility of damage to important parts when dropped while maintaining machine weight, workability, and operability.

  The present invention has been made to solve the above-described problems, and is characterized by the following.

(Claim 1)
The invention described in claim 1 is characterized by the following points.

  That is, the driving tool according to claim 1 includes a nose portion for driving and guiding the fastener toward the driven material, a magazine for continuously supplying the fastener to the nose portion, and the nose portion from the magazine. And a magazine foot provided so as to protrude in the same direction, and the magazine foot is provided with an impact buffering structure for buffering an impact when dropped.

(Claim 2)
The invention described in claim 2 has the following features in addition to the features of the invention described in claim 1 described above.

That is, the magazine foot includes an elastic portion that can be bent when subjected to an impact,
The shock absorbing structure is configured by the elastic portion.

(Claim 3)
The invention described in claim 3 is characterized by the following points in addition to the characteristics of the invention described in claim 2 described above.

  In other words, the elastic part is arranged so as to be shifted laterally as viewed in the longitudinal direction of the magazine.

(Claim 4)
The invention described in claim 4 is characterized by the following points in addition to the characteristics of the invention described in claim 1.

  That is, the magazine foot includes a support part protruding from the magazine, and a contact part extending from the front end of the support part so that a lower surface of the magazine is in contact with the driven material. It is characterized by the said support part and the said contact part.

(Claim 5)
The invention described in claim 5 is characterized by the following points in addition to the characteristics of the invention described in claim 1 described above.

  That is, the magazine foot includes an elastic member on an outer surface, and the impact buffering structure is constituted by the elastic member.

(Claim 6)
The invention described in claim 6 has the following features in addition to the features of the invention described in claim 1 described above.

  That is, the magazine foot includes an elastic member at a contact portion with the magazine, and the shock absorbing structure is configured by the elastic member.

  The invention according to claim 1 is as described above, and the magazine foot is provided with an impact buffering structure for buffering an impact when dropped. For this reason, even when an impact is applied to the magazine foot, the impact is buffered, so that important parts can be prevented from being damaged when dropped. Further, since it is not necessary to have a structure that increases the strength, machine weight, workability, and operability are not sacrificed.

  The invention according to claim 2 is as described above, wherein the magazine foot includes an elastic portion that can be bent when subjected to an impact, and the impact buffering structure is constituted by the elastic portion. For this reason, since the impact can be buffered by deforming the elastic portion, the magazine foot or the like does not need strength, and the cost can be reduced by reducing the weight of the parts and the weight of the material.

  The invention according to claim 3 is as described above, and the elastic portions are arranged to be shifted laterally when viewed in the longitudinal direction of the magazine. For this reason, the transmission path of the force at the time of buffering can be shifted from the machine center plane, and the buffering efficiency can be improved.

  Further, the invention according to claim 4 is as described above, and the magazine foot is extended from the support portion protruding from the magazine and the tip of the support portion so that the lower surface is in contact with the driven material. A contact portion, and the shock absorbing structure is constituted by the support portion and the contact portion. For this reason, even if the magazine foot is damaged due to an impact due to a drop at the site, the damaged part becomes a support part or a contact part, so that the temporary work can be continued and the work is not hindered. . In addition, it is easy to replace parts when damaged, and repair costs including labor can be reduced.

  The invention according to claim 5 is as described above, wherein the magazine foot includes an elastic member on an outer surface, and the shock absorbing structure is constituted by the elastic member. For this reason, an impact can be buffered by an elastic member.

  The invention according to claim 6 is as described above, wherein the magazine foot is provided with an elastic member at a contact portion with the magazine, and the shock absorbing structure is constituted by the elastic member. For this reason, an impact can be buffered by an elastic member.

It is a side view of a driving tool. It is explanatory drawing which shows the magazine foot vicinity schematically, Comprising: (a) Partial enlarged side view, (b) Partial enlarged rear view. It is explanatory drawing which shows a mode that a magazine foot deform | transforms, Comprising: (a) The figure of the state before a deformation | transformation, (b)) The figure of the state after a deformation | transformation. It is explanatory drawing which shows schematically the magazine foot vicinity which concerns on a 1st modification, Comprising: (a) Partial enlarged side view, (b) Partial enlarged rear view. It is explanatory drawing which shows schematically the magazine foot vicinity which concerns on a 2nd modification, Comprising: (a) Partial enlarged side view, (b) Partial enlarged rear view. It is explanatory drawing which shows roughly the magazine foot vicinity which concerns on a 3rd modification, Comprising: (a) Partial enlarged side view, (b) Partial enlarged rear view. It is a side view of a driving tool concerning the 4th modification.

  Hereinafter, an embodiment of the present invention will be described by taking a driving tool 10 driven by combustion gas as an example.

  As shown in FIG. 1, the driving tool 10 according to the present embodiment has a grip housing 12 continuously provided behind a body housing 11. A nose portion 13 for driving and guiding the fastener toward the driven material is attached to the lower portion of the body housing 11, and a magazine 20 loaded with a number of fasteners is connected to the rear of the nose portion 13. ing. As a result, the fasteners in the magazine 20 are sequentially supplied to the nose portion 13.

  The fastener supplied to the nose portion 13 in this way is struck by a striking mechanism (not shown) in the body housing 11 and is ejected from the injection port at the tip of the nose portion 13 to the workpiece.

  The striking mechanism for driving the fastener drives the striking piston by the combustion pressure in the combustion chamber in the body housing 11. A driver slidably disposed in the nose portion 13 is connected to the tip of the striking piston, and when the driver hits the head of the fastener, the fastener is injected from the injection port at the tip of the nose portion 13. Is done.

  Also, in the combustion chamber, a mixed gas of combustible gas and air is generated, and an explosive combustion pressure is generated by igniting the mixed gas.

  The mixed gas in the combustion chamber is ignited by an ignition device that operates when a trigger 14 formed at the base of the grip portion 12a is operated. This ignition device is constituted by a general ignition plug that boosts the voltage of a battery to a high voltage and generates a spark by discharging the high voltage.

  With the configuration as described above, when the trigger 14 is operated, the ignition device is activated to ignite the mixed gas generated in the combustion chamber, whereby the striking mechanism is activated, and the injection port at the tip of the nose portion 13 is operated. A fastener is ejected from.

  Although not particularly illustrated, the nose portion 13 of the driving tool 10 according to the present embodiment is provided with a locking portion capable of locking the front end portion 20a of the magazine 20. By disposing the magazine 20 so as to receive the front end portion 20a of the magazine 20 by this locking portion, the inside of the magazine 20 communicates with the inside of the nose portion 13, and the fastener loaded in the magazine 20 is connected to the nose portion 13 It is possible to supply to the inside.

  On the other hand, the rear end 20b side of the magazine 20 is fixed to the grip housing 12 by fixing means (not shown). This fixing means detachably holds the magazine 20.

  For this reason, the magazine 20 can be detached from the main body of the driving tool 10 by releasing the fixing by the fixing means and releasing the front end 20a of the magazine 20 from the locking portion.

  Incidentally, a magazine foot 21 is provided at the rear end 20b of the magazine 20 according to the present embodiment, as shown in FIG.

  The magazine foot 21 is a resin member that protrudes in the same direction as the nose portion 13. When the fastener is driven, the magazine foot 21 is brought into contact with the driven material together with the nose portion 13 so that the fastener can be stably attached. It is for driving.

  As illustrated in FIG. 2, the magazine foot 21 includes a mounting portion 28 that fits around the magazine 20 and a protruding portion 29 that protrudes from the mounting portion 28.

  The protruding portion 29 is integrally provided with an elastic portion 22 extending in the direction of the driven material and an abutting portion 23 provided at the tip of the elastic portion 22.

  As shown in FIG. 3, the elastic portion 22 is formed into a thin plate shape so that it can be bent when subjected to an impact, thereby providing an impact buffering structure A for buffering the impact when dropped. It is composed.

  The abutting portion 23 has a flat bottom surface, and is arranged such that when the magazine foot 21 is brought into contact with the driven material, the flat lower surface comes into contact with the driven material.

  As shown in FIG. 2B, the elastic portion 22 and the contact portion 23 are provided so as to be substantially L-shaped when viewed from the front-rear direction of the magazine 20. As seen in the longitudinal direction of the, it is shifted to the side.

  Thus, by providing the elastic part 22 offset from the central axis of the magazine 20 or the grip part 12a, the transmission path of the force at the time of buffering is shifted from the machine center plane, and the buffering efficiency is improved.

  As described above, the magazine foot 21 of the present embodiment includes the elastic portion 22 that can be bent when receiving an impact, and the elastic portion 22 constitutes an impact buffering structure A. For this reason, even when an impact is applied to the magazine foot 21, the impact is buffered, so that important parts can be prevented from being damaged when dropped. In addition, since it is not necessary to have a structure that increases the strength, it is possible to reduce the cost by reducing the weight of the parts and the weight of the material, and without sacrificing the machine weight, workability, and operability.

  In addition, the shock-absorbing structure A is not limited to the form configured by the elastic portion 22 described above, and various types can be considered.

  For example, an impact buffering structure A as shown in FIG. 4 may be used.

  The magazine foot 21 shown in FIG. 4 also includes a mounting portion 28 that fits around the magazine 20 and a protruding portion 29 that protrudes from the mounting portion 28, as in the above-described embodiment.

  The projecting portion 29 includes a support portion 24 that projects from the rear end portion 20b of the magazine 20, a contact portion 23 that extends from the front end of the support portion 24 so that the lower surface abuts against the driven material, It has.

  The abutting portion 23 has a flat bottom surface, and is arranged such that when the magazine foot 21 is brought into contact with the driven material, the flat lower surface comes into contact with the driven material.

  As shown in FIG. 4A, the support portion 24 and the contact portion 23 are provided so as to be substantially L-shaped when viewed from the side of the magazine 20.

  According to such a structure, since the contact part 23 and the support part 24 have a cantilever structure, they are formed to be bent or broken when subjected to an impact. That is, even if the magazine foot 21 is damaged due to an impact due to a drop at the site, the damaged portion becomes the support portion 24 or the abutting portion 23, so that important parts can be prevented from being damaged. In other words, in the present embodiment, an impact buffering structure A for buffering an impact at the time of dropping is configured by the contact portion 23 and the support portion 24.

  In the case of such an embodiment, even if damage due to dropping occurs at the site, the magazine foot 21 is only damaged, so that the temporary work can be continued and the work is not hindered. In addition, since it is easy to replace a damaged part (magazine foot 21), the repair cost including labor can be reduced. In addition, since it is not necessary to have a structure that increases the strength, it is possible to reduce the cost by reducing the weight of the parts and the weight of the material, and without sacrificing the machine weight, workability, and operability.

  Moreover, you may employ | adopt the shock-absorbing structure A as shown in FIG.

  The magazine foot 21 shown in FIG. 5 also includes a mounting portion 28 that fits around the magazine 20 and a protruding portion 29 that protrudes from the mounting portion 28 as in the above-described embodiment.

  The protruding portion 29 is assembled in a square shape, and is configured to exhibit rigidity against an external impact. An elastic member 25 is provided on the outer surface of the protruding portion 29 from the rear portion to the bottom portion of the protruding portion 29. Specifically, an elastic member 25 such as rubber or urethane is attached.

  For this reason, even when an impact is applied to the magazine foot 21, the elastic member 25 cushions the impact, so that the impact is not transmitted to the grip portion 12a and the like, and it is possible to prevent the important parts from being damaged when dropped. In addition, since it is not necessary to have a structure that increases the strength, it is possible to reduce the cost by reducing the weight of the parts and the weight of the material, and without sacrificing the machine weight, workability, and operability.

  Moreover, it is good also as an impact buffering structure A as shown in FIG.

  The magazine foot 21 shown in FIG. 6 also includes a mounting portion 28 that fits around the magazine 20 and a protruding portion 29 that protrudes from the mounting portion 28 as in the above-described embodiment. The protruding portion 29 is assembled in a square shape, and is configured to exhibit rigidity against an external impact.

  Here, an elastic member 25 such as rubber or urethane is provided between the mounting portion 28 and the protruding portion 29. That is, the mounting portion 28 and the protruding portion 29 are provided so as to sandwich the elastic member 25 and are joined to each other by adhesion, screw fixing, or the like. Thereby, the elastic member 25 is interposed between the protruding portion 29 and the magazine 20.

  For this reason, even when an impact is applied to the magazine foot 21, the elastic member 25 cushions the impact, so that the impact is not transmitted to the grip portion 12a and the like, and it is possible to prevent the important parts from being damaged when dropped. In addition, since it is not necessary to have a structure that increases the strength, it is possible to reduce the cost by reducing the weight of the parts and the weight of the material, and without sacrificing the machine weight, workability, and operability.

  In the embodiment described above, the magazine foot 21 is described as being provided at the rear end of the magazine 20. However, the present invention is not limited to this. For example, as shown in FIG. It is good also as a structure provided in the vicinity.

  In the above-described embodiments, the combustion gas type driving tool has been described. However, the invention is not limited thereto, and a compressed air driving type driving tool using compressed air, an electric driving type driving tool using a motor and a spring, and the like. You may apply to.

DESCRIPTION OF SYMBOLS 10 Driving tool 11 Body housing 12 Grip housing 12a Grip part 13 Nose part 14 Trigger 20 Magazine 20a Front end part 20b Rear end part 21 Magazine foot 22 Elastic part 23 Contact part 24 Support part 25 Elastic member 28 Mounting part 29 Projection part A Impact Buffer structure

Claims (6)

A nose portion that guides the fasteners toward the workpiece,
A magazine for continuously supplying fasteners to the nose portion;
A magazine foot provided to protrude from the magazine in the same direction as the nose portion;
With
The magazine foot is provided with an impact buffering structure for buffering an impact when dropped. The magazine foot includes an elastic part that can be bent when subjected to an impact,
The driving tool according to claim 1, wherein the shock absorbing structure is configured by the elastic portion.   The driving tool according to claim 2, wherein the elastic portion is arranged to be shifted laterally when viewed in the longitudinal direction of the magazine. The magazine foot includes a support portion that protrudes from the magazine, and a contact portion that extends from the tip of the support portion so that the lower surface contacts the material to be driven,
The driving tool according to claim 1, wherein the shock absorbing structure includes the support portion and the contact portion. The magazine foot comprises an elastic member on the outer surface,
The driving tool according to claim 1, wherein the shock absorbing structure is constituted by the elastic member. The magazine foot includes an elastic member at a contact portion with the magazine,
The driving tool according to claim 1, wherein the shock absorbing structure is constituted by the elastic member.

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