JP2007326203A - Protector structure of fastener drive machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent accidentally removing at the time of attachment, to have a good attaching/detaching property, and to allow a second protector to perform a protecting function even if a first protector is damaged and lost. <P>SOLUTION: In the protector for the fastener drive machine F, a cylinder cap 12 provided on an upper part of a housing 10 of the fastener drive machine F is covered by the protector composed of a first protector and a second protector which are made from elastic material. The first protector 2 is stuck and fixed to a surface of the housing or the cylinder cap 12 to cover a part of the surface. The second protector 3 covers the upper part of the cylinder cap 12 by using its elasticity, and is engaged with the first protector 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a protector structure for a fastener driving machine, and more particularly to protecting the housing of the fastener driving machine, and leaving the driving machine on the finishing material or dragging it on the finishing material during the fastener driving operation. The present invention also relates to a protector structure mounted on the outer surface of the driving machine housing so as not to damage the surface of the finishing material.

  As a protector structure of a conventional fastener driving machine, a rib formed on the inner edge of a protector made of rubber, synthetic resin or the like in a concave locking groove formed on the body side of the driving machine when the protector is attached to the driving machine What is made | formed by inserting a convex-shaped strip is known (for example, refer patent document 1). Also known is that the lip portions provided at the upper and lower portions of the protector are respectively inserted and locked in the mounting groove portions formed on the upper and lower sides of the housing of the fastener driving machine (nailing machine) ( For example, see Patent Document 2).

In addition, the protector can be attached to the cylinder cap or body by hooking the hole of the protector on the protrusion formed on the cylinder cap or body of the fastener driving machine, or the protector can be directly bonded and fixed to the cylinder cap or body. What to do is also known.
Japanese Patent No. 3680937 JP 2002-127039 A

  By the way, the protector described in the above-mentioned Patent Document 1 is easy to mount on the housing (body) of the fastener driving machine, but requires a tool for removal, and the handleability is not good. When the protector is not installed, such as when the protector is removed or lost due to peeling due to breakage, the housing of the driving machine is not sufficiently protected, and the surface of the finishing material is damaged by contact with the finishing material of the driving machine It will be.

  In addition, rib-shaped convex strips for mounting the protector are formed on the inner edge of the protector, and the formation of the rib-shaped convex strips deteriorates the die-cutting in the mold molding, so the production efficiency of the protector is lowered. It will be.

  Moreover, since the protector of the above-mentioned patent document 2 is mounted by inserting and locking the lip portions of the upper and lower portions of the protector in the mounting groove portions provided on the upper and lower portions of the housing side, in the use of the driving machine The protector may be loosened due to vibration or the like, and the protector may move and come out.

  Furthermore, in the protector that attaches the hole of the protector by hooking the protrusion of the housing (cylinder cap or body) described above, the protector can be easily detached because it is only hooked to the protrusion, so that the protector hole is hooked on the protrusion. Furthermore, the upper surface is covered with another part, and this separate part is fixed by using a tool, and a tool is required when removing the protector. In the case where the protector is directly bonded to the housing, it is difficult to replace the protector when the protector is broken.

  The present invention eliminates the problems of the protector in the above-described conventionally known fastener driving machine, does not come off carelessly when installed, yet has good detachability, and even if one protector is damaged or lost, the other It is an object of the present invention to provide a protector structure in which the protector can perform a protective function.

  In order to solve the above-mentioned problem, the invention according to claim 1 is to cover the cylinder cap provided on the upper portion of the housing of the fastener driving machine with a protector composed of a first protector made of an elastic material and a second protector. In the protector of the fastener driving machine, the first protector is adhered and fixed to the surface of the housing or the cylinder cap to cover a part of the surface, and the second protector utilizes the elasticity of the cylinder cap. And the second protector is engaged with the first protector.

  According to a second aspect of the present invention, in the first aspect, the first protector is smaller than the second protector, and the second protector is formed with an opening that fits into the first protector. And

  According to a third aspect of the present invention, in the second aspect of the present invention, the inner edge of the first protector includes an edge that engages with the opening of the second protector on the side opposite to the upper portion of the cylinder cap. The taper part which undercuts and guides so that the edge part of the said opening part may bite was formed.

  According to the first aspect of the present invention, the first protector is adhered and fixed to the surface of the housing or the cylinder cap to cover a part of the surface, and the second protector utilizes the elasticity of the cylinder. Since the upper part of the cap is covered and the second protector is engaged with and attached to the first protector, a special processing part such as an engaging groove part or a locking convex part for mounting the protector is driven. There is no need to form directly on the side, and no tools for mounting are required.

  Further, since the second protector is engaged with the first protector by using elasticity, the second protector is in close contact with the cylinder cap without causing a positional shift and is not inadvertently detached during the operation.

  Furthermore, even when the second protector is detached due to damage or the like, the first protector made of synthetic resin is fixed to the housing of the driving machine, and the fastener driving machine falls on the driven material and comes into contact therewith. In addition, the fastener driving machine is protected by the first protector, and at the same time, the surface of the driven material such as the finishing material is effectively prevented from being damaged.

  And since the 2nd protector is comprised from an elastic material and it is also easy to remove using the elasticity, the protector with abundant color variations can be freely exchanged on the user side. Moreover, since the 1st and 2nd protector is a product made from a synthetic resin, it contributes to the weight reduction of a fastener driving machine.

  According to the invention which concerns on Claim 2, since the opening part of a 2nd protector is a structure fitted to a 1st protector, since both protectors closely_contact | adhere with a clearance gap in mounting | wearing state, favorable external appearance property is shown. Design effects with a sense of unity can be achieved Further, the second protector does not come off carelessly during the fastener driving operation.

  According to the invention according to claim 3, of the inner peripheral edge of the first protector, undercut the edge that engages with the opening of the second protector on the opposite side of the cylinder cap, Since the tapered portion that guides the edge of the opening to bite in is formed, the edge of the opening of the second protector increases as the force of receiving the force that causes the second protector to come off the cylinder cap is stronger. The tendency of the portion to be guided by the tapered portion of the first protector increases. Therefore, the second protector is unlikely to come off, and the holding of the second protector is ensured.

  FIG. 1 is a side view of a fastener driving machine F to which the protector 1 is attached. The fastener driving machine F operates using compressed air or the like as a power source, and moves up and down in the housing 10 with a drive unit including a cylinder and a piston not shown in the housing 10. A driver for hitting a fastener such as a nail (not shown) is built in, and a lower part of the housing 10 is provided with a nose portion 11 for driving out a fastener having an injection path.

  The upper part of the housing 10 is covered with a cylinder cap 12, a grip 13 is provided integrally with the housing 10, and a fastener magazine 14 is provided at the lower part of the grip 13.

  As shown in FIG. 2, the outer surface 12 a of the cylinder cap 12 covering the upper end opening 10 a of the housing 10 protects the outer surface 12 a of the cap 12 and at the same time, a fastener driving machine F and a driven member such as a finishing material. The protector 1 which is a protection member for preventing the direct contact of is attached.

  Further, as shown in FIG. 3, the protector 1 is a molded product molded from an elastic material such as flexible rubber or synthetic resin by die molding or the like, and the first protector 2 having two different structures. And the second protector 3, and the first and second protectors 2 and 3 are joined to each other on the outer surface 12a of the cylinder cap 12 to cover substantially the entire surface of the cylinder cap outer surface 12a. ing.

  As shown in FIGS. 2A and 2B and FIG. 3, the first protector 2 has a relatively thick and substantially rectangular outer shape with a relatively small surface area, and both left and right sides of the cylinder cap 12. Each is installed on the outer surface. The first protector 2 is formed of a material having relatively low elasticity, and is adhered and fixed to the left and right outer surfaces of the cylinder cap 12 using an adhesive.

  By the way, of the inner peripheral edge of the first protector 2, the lower edge 2a of the cylinder cap 12 is undercut toward the affixing surface 2b and is formed as a tapered portion. The other edge portions, that is, the upper and front edge portions directed to the rear side of the driving machine F are both formed as substantially vertical surfaces.

  The second protector 3 is a protective member that covers substantially the entire surface of the cylinder cap outer surface 12a except for the portion covered with the first protector 2. The protector 3 is perfectly fitted to the outer surface 12a of the cylinder cap 12. It has a hat-like shape to be fitted, and has openings 4 for fitting to the first protector 2 on both sides thereof. The opening 4 has a shape corresponding to the outer shape of the first protector 2 as shown in FIG. 1 and FIG.

  Note that the inner peripheral edge 3 a of the opening 4 of the second protector 3 is formed so as to be inclined toward the inside of the opening 4. This inclination angle is preferably formed so as to be equal to or smaller than the angle of the lower edge 2a of the cylinder cap 12.

  Next, when the second protector 3 is attached to the cylinder cap 12, after covering the upper part of the cylinder cap 12, the position of the left and right first protectors 2 is checked while pulling using the elasticity. These openings 4 are engaged with and engaged with the outer peripheral edge of the first protector 2. As a result, the first and second protectors 2 and 3 are in close contact with each other in the mounted state, so that the entire outer surface 12a of the cylinder cap 12 is in close contact with the first protector 2 and the second protector 3. Can cover almost completely.

  As described above, according to the above protector structure, the first protector 2 is adhered and fixed to the housing 10 to cover a part of the cylinder cap 12, and the second protector 3 utilizes its elasticity. Since the upper portion of the cylinder cap 12 is covered and attached to the first protector 2, an engagement groove or a locking projection for attaching the protector to the fastener driving tool F side is provided. It is not necessary to form a special processing part directly on the driving machine side, and no tool for mounting is required.

  Further, since the second protector 3 is engaged with the first protector 2 by using elasticity, the second protector 3 is in close contact with the cylinder cap 12 without causing a positional shift and is not inadvertently detached during the operation. .

  Furthermore, even when the second protector 3 is detached due to damage or the like, the first protector 2 made of synthetic resin is fixed to the housing 10 of the driving machine, and the fastener driving machine F falls on the driven material. Even if contact is made, the fastener driving machine is protected by the first protector 2 as shown in FIG. 4, and at the same time, the surface of the driven material such as the finishing material is effectively prevented from being damaged. In addition, if the elastic body 5 is attached also to the right and left sides of the base part of the nose part 11, a protective effect will further improve.

  And since the 2nd protector 3 is comprised from an elastic material and it is also easy to remove using the elasticity, the protector with abundant color variations can be freely exchanged and used by the user side. Further, since the first and second protectors 2 and 3 are made of synthetic resin, it contributes to weight reduction of the fastener driving machine F.

  In addition, since the opening 4 of the second protector 3 is configured to fit into the first protector 2, both the protectors 2 and 3 are in close contact with each other in the mounted state, so that a good appearance is maintained. A design effect with a bodily sensation can be brought about. Further, the second protector 3 is not inadvertently detached during the fastener driving operation.

  Further, an edge 2 a that engages with the opening 4 of the second protector 3 is undercut among the inner peripheral edge of the first protector 2 below the cylinder cap 12. Since the tapered portion that guides the edge 3a to bite is formed, the stronger the force that the second protector 3 is released from above the cylinder cap 12, the higher the opening 4 of the second protector 3 is. The edge portion 3a is guided by the tapered portion 2a of the first protector 2, and the tendency to bite becomes strong. In particular, the edge 3a is inclined so as to become lower toward the inside of the opening 4, so that the biting is ensured. Therefore, the second protector 3 is unlikely to come off, and the holding of the second protector 3 is ensured.

  In the above-described embodiment, the second protector 3 is engaged with the first protector 2 by engaging the opening 4 of the second protector 3. What is necessary is just to engage so that a protector may be hold | maintained, and it is not limited to the said embodiment.

It is an external appearance side view of the fastener driving machine of this invention. It is a figure which shows the principal part of the fastener driving machine of this invention, (a) is an expanded side view of a principal part, (b) is sectional drawing on the AA line in (a). It is an exploded view of the protector of this invention, and is a figure shown by a cross section. It is an external appearance top view of the fastener driving machine of this invention, and is a figure which shows the state by which one protector is not mounted | worn.

Explanation of symbols

F Fastener driving machine 1 Protector 2 First protector 2a Edge (taper)
3 Second Protector 4 Opening 10 Housing 12 Cylinder Cap

Claims (3)

In the protector of the fastener driving machine for covering the cylinder cap provided on the upper part of the housing of the fastener driving machine with the protector made of the first protector and the second protector each made of an elastic material,
The first protector is adhered and fixed to the surface of the housing or the cylinder cap to cover a part of the surface, and the second protector covers the upper part of the cylinder cap by using its elasticity. A protector for a fastener driving machine, wherein two protectors are engaged with the first protector.   2. The fastener driving machine according to claim 1, wherein the first protector is smaller than the second protector, and the second protector is formed with an opening that fits into the first protector. Protector structure.   Under the edge of the inner edge of the first protector that engages with the opening of the second protector on the side opposite to the upper part of the cylinder cap, the edge of the opening is bitten. The protector structure for a fastener driving machine according to claim 2, wherein a taper portion for guiding is formed.

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