JP4818759B2 - Rail cut tool - Google Patents

Description

  The present invention relates to a jig mainly used for cutting a sash rail.

When replacing a sash, a new sash frame may be attached to an existing sash frame without removing the existing sash frame. Thus, when installing a new sash frame on top of the existing sash frame, the existing sash frame may be attached. It is necessary to cut out the rail of the frame. Conventionally, the cutting operation of the rails of the sash frame has been performed using a sander or a hammer and a hammer. However, when cutting with a sander, noise and dust are generated at the time of cutting and safety at the time of work is poor. On the other hand, when cutting with a hammer and hammer, the progress of the work is determined by the skill level of the operator. The work efficiency is very poor because it takes more than 30 minutes to cut the rail for 1 meter even by a skilled person, and the rail is cut while hitting a hammer with a hammer. Therefore, it was accompanied by harsh noise.
JP 2003-340636 A

  Therefore, there has been a rail cutting tool as disclosed in Patent Document 1, but in one set of cutting edges, one cutting edge faces the outdoor-side finding surface of the rail, and the other cutting edge faces the indoor-side finding surface. However, since the blade edge is a columnar shape extending vertically, the outdoor outer face of the rail and the indoor inner face of the rail hit each point, so two cutting edges rather than cutting. The operation state is such that the rails are torn between them, and this results in not only a small number of cuts in one operation but also uncutting.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a rail-cutting tool that can be easily and efficiently operated and has no uncut parts.

The invention according to claim 1 of the present invention includes a gripping rod, a handle portion, and a rail cutting portion, and the gripping rod is provided so as to protrude upward from the upper end of the tip of the gripping rod. The cutting part is provided so as to protrude downward from the lower end of the tip of the gripping bar, and the blade edge and the outdoor side facing the indoor side that are wide in the longitudinal direction of the rail protruding from the upper surface of the lower frame and face each other with an interval across the rail. A pair of cutting edges each having a blade edge facing the surface and a mounting portion placed on the upper surface of the lower frame, and the one set of cutting edges is one side in the longitudinal direction of the rail of the cutting edge facing the indoor side when horizontally rotated. A rail-cutting tool characterized in that the other end portion in the rail longitudinal direction of the blade edge facing the outdoor side comes into contact with the indoor-side finding surface of the rail while the end portion comes into contact with the outdoor-side finding surface of the rail.

  The invention according to claim 2 of the present invention is characterized in that the handle portion is rotatable about a vertical axis.

According to the first aspect of the present invention, since the cutting edge is wide in the longitudinal direction of the rail and the handle part protruding upward is attached to the upper edge of the cutting edge and the gripping rod, the user can stable with it the pivoted horizontally, the cut material (under the lower end of the rail cutting unit rail erected by grip hand section gripping bar with the other hand while holding the lifting hand portion with one hand Frame ). On the other hand, when cutting the rail, the pair of cutting edges on the outdoor side and the indoor side are wide in the rail longitudinal direction, so that the cutting range is extended with respect to the outdoor finding surface and the indoor finding surface of the rail. It is easy to work, and a set of cutting edges can be cut in the cutting direction with a light force against the outdoor finding surface and the indoor finding surface of the rail, so that the rail can be cut easily. Since the cuts can be made at the same height position on the outdoor side finding surface and the indoor side finding surface of the rail, the uncut rails after work are also eliminated. By having the mounting portion placed on the upper surface of the lower frame in the rail cutting portion, the rail cutting tool is stabilized when pressed against the upper surface of the lower frame by the handle portion, and the rail is more easily cut. By having a wide pair of cutting edges in the longitudinal direction of the rail, the rail cutting direction can be changed, and the rail can be cut even if it rotates horizontally in either the left or right direction. . Since the rail cutting portion is provided so as to protrude downward from the lower end of the tip of the gripping rod, the rail can be cut regardless of whether the operator places his / her body on the indoor or outdoor side.

  According to the second aspect of the present invention, since the handle portion rotates about the vertical axis, the grip bar can be operated with a lighter force, so that the rail can be more easily cut.

Hereinafter, an embodiment of a rail cut tool of the present invention will be described based on the drawings. 1 to 5 show an embodiment of a rail cut tool of the present invention. As shown in FIGS. 1 and 4 (a), (b), (c), and (d), this rail cutting tool is opposed to the outdoor-side finding surface P and the indoor-side finding surface Q of the rail L of the lower frame U. The rail cutting portions 2a and 2b having a pair of cutting edges 12a and 12b are operated by rotating the gripping rod 1 in the horizontal direction with the other hand LH while holding the handle portion (rotating body 5) 3 with one hand RH. By the action of the lever, the outdoor finding surface P or the indoor finding surface Q of the rail L is sequentially cut and cut. Hereinafter, the structure and use procedure of the rail cut tool will be described. In addition, although the rail cut tool of this invention does not limit a use place, in this embodiment, a direction is defined as "indoor side" and "outdoor side" for convenience.

As shown in FIGS. 3 (a) and 3 (b), the rail cutting portions 2a and 2b are configured by arranging a pair of blocks that can be divided into the outdoor side and the indoor side. As shown in FIG. 3 (a), the lower side of the block of the rail cutting portions 2a and 2b is located on the lower side of the block of the rail L, and the inner side of the rail L is wide. The blade edge 12a facing the outside and the blade edge 12b facing the outdoor side are provided to face each other, and a space is provided between the blade edge 12a facing the indoor side and the blade edge 12b facing the outdoor side so that the rail L can be swallowed. At the lower end surface, there is a mounting portion T that is placed on the upper surface of the lower frame U. More specifically, notches 15a and 15b are provided at lower positions of the blocks of the rail cutting portions 2a and 2b, and the notches 15a and 15b are inserted through when the blocks of the rail cutting portions 2a and 2b are put together. When coupled to the hole 8 through the fixing pin 7, the depth at which the rail L can be swallowed by the combination of the notches 15 a and 15 b and the blade edge 12 a and the outdoor side facing the indoor side are formed at the lower position of the rail cutting portions 2 a and 2 b A recess D having a width sufficient to leave a gap between the facing blade edge 12b and the rail L is formed. As shown in FIG. 3A, when the recess D of the rail cutting portions 2a and 2b is swung over the rail L from above, the mounting portion T of the rail cutting portions 2a and 2b is placed on the upper surface of the lower frame U. The blade edge 12a facing the indoor side and the blade edge 12b facing the outdoor side are formed wide in the rail longitudinal direction of the rail L, so that the outdoor side finding surface P and the indoor side finding surface of the rail L are formed. It will face in the state where the cutting range was lengthened with respect to Q. The rail cutting portions 2a and 2b of the present embodiment are composed of a pair of blocks. This is for the purpose of replacement when the blade edges 12a and 12b are damaged, and is formed integrally. May be. The rail cutting portions 2a and 2b are shown in FIGS. 7 (a) and 7 (b) by forming the length from the mounting portion T to the attachment portion with the gripping rod 1 longer than the rising portion 18 of the lower frame U. Thus, the operator can cut the rail from the indoor side, and can cope with the cutting of the rail provided in the groove, for example.

  As shown in FIGS. 2A and 2B, the gripping rod 1 is a bar having a round cross-sectional shape and is easily formed by hand. The holding rod support block 13 is divided into upper and lower parts and has a semicircular notch on the side where the blocks come into contact with each other. A round hole with a notch is formed when these are combined. The mounting state of the gripping rod 1 and the gripping rod support block 13 includes a protruding portion 14 protruding along the longitudinal direction of the gripping rod 1 at the tip of the gripping rod 1, and the protruding portion 14 is connected to the gripping rod support block. 13 round holes are welded. Rail cutting portions 2a and 2b are attached to the lower end surface of the gripping rod support block 13, and when the gripping rod support block 13 and the rail cutting portions 2a and 2b are aligned vertically, the gripping rod support block 13 and The insertion holes 10 of the rail cutting portions 2a and 2b communicate with each other, and a fixing pin 9 is inserted into and fixed to the insertion hole 10 that communicates vertically. Although the grip bar support block 13 of this embodiment is divided into upper and lower parts, it may be formed integrally, and the grip bar support block 13 can be attached to the grip bar 1 in a screw manner other than welding. Alternatively, a through hole may be provided and fixed with a fixing pin.

  The handle portion 3 has a core portion 4 that stands up from the upper end surface of the gripping rod support block 13, and has a round bar-like rotating body 5 that stands up from the upper side of the core portion 4 and has a diameter larger than that of the core portion 4. The core portion 4 includes a cylindrical member 17 centering on a vertical axis, a shaft pin 6a inserted through the cylindrical member 17, and a nut 6b fitted into the shaft pin 6a. The gripping rod support block 13 is inserted into a through-hole penetrating up and down in a state where it cannot be pulled out, and a shaft pin 6 a with the outer peripheral edge of the head protruding is inserted into the upper cylindrical hole of the cylindrical member 17. The head of the shaft pin 6a is accommodated in a hole having the same shape as that of the head provided on the lower side of the rotary body 5, thereby preventing the rotary body 5 from coming out of the head. On the other hand, the tip of the shaft pin 6a protrudes from the lower cylindrical hole of the cylindrical member 17, and the nut 6b is fitted on the tip of the axial pin 6a so that the shaft pin 6a is pulled out from the upper cylindrical hole of the cylindrical member 17. Is preventing. If formed in this way, the head of the shaft pin 6a can attach the rotating body 5 from the upper end surface of the gripping rod support block 13 so as not to be detached, and the core portion 4 (tubular member 17, shaft pin 6a, nut 6b) as an axis. The rotating body 5 can be freely rotated. In the present embodiment, the core portion 4 has been described in which the shaft pin 6a is inserted into the cylindrical hole of the cylindrical member 17. However, the core portion 4 may be formed by only the shaft pin 6a and the nut 6b.

The use procedure of the rail cutting tool of the present invention will be described. As shown in FIGS. 1 and 4 (a), (b), (c), and (d), the rail cutting tool is first shown in FIG. Hold the rotating body 5 with the other hand RH, hold the gripping rod 1 with the other hand LH, and place the mounting portions T of the rail cutting portions 2a, 2b on the upper surface of the lower frame U with the handle portion (rotating body 5) 3. The rail L is swallowed into the recess D of the rail cutting portions 2a and 2b so as to straddle the rail L between the blade edge 12a facing the indoor side and the blade edge 12b facing the outdoor side (see also FIG. 1). . Next, as shown in FIG. 4B, while holding the rotating body 5 with one hand RH and pressing it from above, the end of the cutting edge side of the rail longitudinal direction of the cutting edge 12a facing the room side (the cutting edge facing the room side) The end of the cutting edge 12b facing the outdoor side of the cutting edge 12b facing the outdoor side (on the opposite side of the cutting direction in the rail longitudinal direction) The other end of the cutting edge in the rail longitudinal direction) W abuts against the indoor-side finding surface Q of the rail L, and this cuts into the indoor-side finding surface Q of the rail L. Is bent to the outdoor side while being pushed by the blade edge 12b facing the outdoor side. As a result, an incision of about half the width of the blade edge 12b facing the outdoor side is made in the indoor-side finding surface Q of the rail L. Next, as shown in FIG. 4 (c), in the cutting direction shown in FIG. 4 (b), the gripping bar 1 on which the bar tip on the side away from the blade edges 12a, 12b is positioned is opposite to the cutting direction. By rotating horizontally in the direction of returning, the cut rail Le that is bent outward is returned to the original straight line shape. Subsequently, when cutting the rail L, as shown in FIG. 4D, the handle portion (rotating body 5) 3 is operated to cut the cutting edge 12b facing the outdoor side to a position where the rail L is not cut. 4 and again, the operation of FIGS. 4A to 4C is repeated, so that the continuous rail L can be cut. In addition, in the same manner as the cutting procedure of the rail L by the blade edge 12b facing the outdoor side, it is possible to cut the rail L into the outdoor side finding surface P by the blade edge 12a facing the indoor side. As a result, the cutting edge 12a facing the indoor side is located on the indoor side of the cutting edge 12b facing the indoor side because the cutting edge 12a facing the indoor side and the cutting edge 12b facing the outdoor side face each other. Therefore, the cut is made with the blade edge 12a facing the indoor side along the longitudinal direction of the rail L (in the direction opposite to the cut direction by the blade edge 12b facing the outdoor side). Since the cut is made on both sides of the position where the heights of the outdoor-side finding surface P and the indoor-side finding surface Q of the rail L coincide with each other, the rail L can be cut without being left uncut.

  The rail cutting tool of the present invention has tapers (throttle portions) 11a and 11b that narrow downward toward the lower end portion of the rail cutting portions 2a and 2b opposite to the side having the recess D, and this taper. As shown in FIG. 5 by 11a and 11b, the rail L provided in a narrow place where it is difficult to insert this type of rail cutting tool can be cut. On the other hand, all corners in plan view of the blocks of the rail cutting portions 2a and 2b also have tapers (chamfered portions) 11c, 11d, 11e, and 11f, thereby cutting the rail L even in a narrow place. When this is done, the rail cutting portions 2a, 2b, the blade edge 12a facing the indoor side, and the blade edge 12b facing the outdoor side can be horizontally rotated with the handle portion (core portion 4) 3 as the center of the axis. In the present embodiment, the handle portion 3 has been shown in which the rotating body 5 is rotatable about the vertical axis by the vertically standing core portion 4. However, as shown in FIG. 3 may be fixed to the gripping rod support block 13 or the rail cutting portions 2a and 2b without being rotated by welding or the like, and the shape of the handle portion (rotating body 5) 3 may be, for example, 6 (b) or a grip handle as shown in FIG. 6 (c) may be used. From this, the handle portion (rotating body 5) may be used. The attachment state and shape of 3 are not particularly limited. In the rail cutting portions 2a and 2b of the present embodiment, the blade edge 12a facing the indoor side and the blade edge 12b facing the outdoor side protrude from the grip bar 1 at a distance from the grip bar 1, but are close to the grip bar 1 May be provided.

It is a perspective view which shows the structure and use condition of the rail cut tool of this invention. (A) is a figure which shows the whole rail cut tool of this invention in front view, (b) is a figure shown in side view from the outdoor side. (A) is the AA longitudinal cross-sectional view of FIG. 1, (b) is the BB longitudinal cross-sectional view of FIG. (A), (b), (c), (d) is explanatory drawing which planarly viewed the use procedure of the rail cut tool of this invention. (A) is a longitudinal cross-sectional view which shows an example of use of the rail cut tool of this invention, (b) is a cross-sectional view of Fig.5 (a). (A), (b), (c) is a longitudinal cross-sectional view which shows other embodiment of the handle part (rotary body) of the rail cut tool of this invention. (A) is a figure seen from the front about the case where the rail cut tool of this invention is used from the room inner side, (b) is the figure seen planarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Grasping rod 2a, 2b Rail cutting part 3 Handle part 12a Blade edge which faces the indoor side 12b Blade edge which faces the outdoor side J Edge of the blade edge which faces the indoor side W Other end part of the blade edge which faces the outdoor side L Rail P Touching surface Q Indoor side facing surface T Mounting part U Lower frame

Claims (2)

A gripping rod, a gripping portion, and a rail cutting portion are provided, the gripping portion is provided to project upward from the top end of the gripping rod, and the rail cutting portion is provided to project downward from the bottom end of the gripping rod. A pair of cutting edges that are wide in the longitudinal direction of the rail projecting from the upper surface of the lower frame and facing the indoor side facing the space extending across the rail, and a cutting edge facing the outdoor side, and an upper surface of the lower frame those having a placing section put, a pair of cutting edges, with one side edge of the rail longitudinal edge facing the interior side when the horizontal rotation contacts the exterior side finds surface of the rail, the chamber A rail cutting tool characterized in that the other end of the cutting edge facing the outside in the longitudinal direction of the rail comes into contact with the indoor-side finding surface of the rail. The rail cut tool according to claim 1, wherein the handle portion is rotatable about a vertical axis.