JPH0727123Y2 - Hand saw - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a hand-operated saw, and more particularly to improvement of a handle portion in a replaceable blade-type hand-operated saw.

<Prior Art> As a prior art that is interesting in the present invention, there is a handle of a manual interest instrument described in Japanese Utility Model Application Laid-Open No. 60-149780, which is a prior application of the present applicant. The handle of this manual instrument has a structure in which a blade portion and a handle portion are integrally formed, and a rubber plate having a shape in which the handle is divided into two is attached to both left and right side surfaces of the handle portion.

Further, as another prior application, there are hand-operated saws disclosed in Japanese Utility Model Publication No. 61-25103 and Japanese Utility Model Publication No. 61-25104. This manual saw has a structure in which a base portion of a saw body is extended obliquely downward to form a handle portion integrally with the saw body, and a saw handle cover is attached to the handle portion.

<Problems to be solved by the invention> Among the conventional techniques, the former one has a rubber plate attached to the handle, so the rubber is peeled off from the handle and the rubber plate is attached to another handle. It is not meant to be reused. Therefore, even if the tooth portion is chipped and the tooth is desired to be replaced, only the rubber plate cannot be removed and reused.

Among the conventional techniques, the latter one does not have a replaceable saw body, and the saw handle cover is removed from the saw body and the saw handle cover is attached to another saw body for use. Not supposed to do.

On the other hand, as a recent hand-operated saw, a so-called replaceable-blade type saw has become mainstream, and the saw blade is made replaceable when the sharpness is deteriorated due to chipping of teeth or the like.

The present invention is a hand-operated saw having a handle that is not slippery and is easy to handle, and is suitable for such a replaceable saw, and when the saw is replaced, the handle can be easily removed from the saw. An object of the present invention is to provide a hand-operated saw in which the handle portion can be easily attached to the replaced saw body.

<Means for Solving the Problem> The present invention is a hand-operated saw having a handle on the saw body, and the saw body is provided with a long handle of the entire handle behind the blade portion having teeth. A handle core portion that forms a ridge is integrally extended, and a plurality of through holes are formed in the handle core portion along the length direction thereof at a short predetermined distance from each other. A handle body detachable from the handle core portion, the handle body having a length substantially equal to that of the handle core portion, and covering the handle core portion. Part of the handle body, the other part of the handle core part abutting on the other side surface of the handle body, the one part of the handle body is a rubber grip portion and a synthetic resin attachment. It consists of a guide part and the grip part is one A step portion is provided on the inside of the divided body, and the mounting guide portion is fitted into the step portion, and the surface of the mounting guide portion that abuts the handle core portion has a handle core portion. Corresponding to the formed plurality of through holes, a plurality of protrusions that are respectively inserted into the through holes and project to the other surface side of the handle core portion are formed, and the other divided body of the handle body is The whole is made of rubber, and the tip of the plurality of projections projecting from the other side surface of the handle core through the through hole is received on the surface that abuts the other side surface of the handle core, respectively. A hand saw, wherein a plurality of recesses for close fitting are formed, and the handle main body is attached to the handle core by the close fitting of the plurality of protrusions and recesses. .

Further, according to this invention, in the above-mentioned manual saw, at least one through hole penetrating the handle body and the handle core is formed, and a fixing screw is fitted in the through hole.

<Action> One of the divided parts of the handle body has a rubber grip part,
The grip portion constitutes the outside of the one-sided body, and the attachment guide portion is arranged inside thereof. Corresponding to the plurality of through holes formed in the handle core, a plurality of protrusions that are respectively inserted into the through holes and project toward the other surface side of the core are formed on the surface of the attachment guide portion. . On the other hand, the split body is entirely made of rubber, and has a plurality of recesses for receiving the projection formed on the mounting guide portion and closely fitting with the projection. Therefore,
The one divided body is brought into contact with one side surface of the handle core portion, and the plurality of protrusions provided in the mounting guide portion are engaged so as to penetrate through the plurality of through holes formed in the handle core portion, and the handle core By bringing the other divided body into contact with the other side surface of the portion and closely fitting the protrusion and the concave portion, a handle having a three-layer structure in which the handle core is sandwiched between the one divided body and the other divided body is formed. Can be configured. Therefore, when a force is applied to the handle core portion sandwiched in the center portion of the handle body, the force is efficiently transmitted to the tip blade portion, which facilitates the sawing operation.

Further, when exchanging the saw body, it is only necessary to remove the one divided body and the other divided body from the handle core portion so as to separate them, so that the saw body can be easily exchanged.

<Embodiment> An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a replaceable blade type hand-operated saw 1 according to an embodiment of the present invention.
2 is an exploded perspective view of the saw 1. FIG. Furthermore, FIG. 3 shows the saw 1 along the line III-III in FIG.
It is sectional drawing of the handle part of.

Referring to FIGS. 1 and 3, the saw 1 includes a replaceable saw blade 2 and a handle 3. The saw blade 2 is composed of a blade portion 5 in which a large number of teeth 4 are arranged in an array, and a handle core portion 6 which is provided behind the blade portion 5 and integrally extends to the blade portion 5. The handle core portion 6 is curved obliquely downward in the middle thereof, and has a shape that is easy to hold. Four through holes 7a, 7b, 7c and 7d are formed in the handle core portion 6 at equal intervals along the length direction thereof. In addition, a through hole 8 that is relatively smaller than the through holes 7a to 7d is formed at the tip (the position closest to the blade portion 5).

In this embodiment, as described above, the handle core 6 is curved in the middle thereof, but the present invention is not limited to this, and the handle core 6 may extend straight along the extension line of the blade 5.

Further, the number of the through holes 7a to 7d formed in the handle core portion 6 is not limited to four, and may be an appropriate number according to the length of the handle core portion 6.

The handle core 6 is sandwiched by the handle main body 9 from both left and right sides. The handle main body 9 is composed of a pair of one divided body 10 and the other divided body 11.

On the other hand, the split body 10 is provided with a plurality of protrusions 12a, 12b, 12c and 12d on the surface that comes into contact with the side surface of the handle core portion 6. These protrusions 12a to 12d are, as shown in FIG.
The handle core 6 is inserted into the through holes 7a to 7d so as to project from the other surface side of the handle core 6. Further, a through hole 13 is formed on the tip side of the one-side divided body 10.

Further, the other split body 11 has four concave portions 14a, 14b, 14c and 14d which respectively receive the above-mentioned protruding projections 12a to 12d on the surface which abuts against the side surface of the handle core portion 6 and which are closely fitted thereto. Are formed. Further, a through hole 15 is formed on the tip side of the other divided body 11.

The handle body 9 is made of synthetic rubber in this embodiment. More specifically, in the handle main body 9, one of the divided bodies 10 is made of synthetic rubber except for a portion including the protrusions 12a to 12d, and the other divided body 11 is made of synthetic rubber. Has been.

Therefore, from one of the left and right sides of the handle core 6, one divided body 10
And the other divided body 11 is mounted respectively, the projections 12a to 12d are inserted into the through holes 7a to 7d, and the projections 12a to 12d and the recesses 14a to 14d.
And 3 are closely fitted to each other, so that the handle 3
Are formed. Also, the projections 12a to 12d and the recesses 14a to 14d
Since they are closely fitted to each other, there is no possibility that the one divided body 10 and the other divided body 11 attached to the handle core portion 6 will naturally fall off the handle core portion 6 or the like.

Further, in this embodiment, through holes 8, 13, 15 are formed. These through holes are formed in the handle core 6 and the handle body 9
When they are mounted, the through holes are made to communicate with each other, and the communicating through holes 8, 13 and 15 have a pair of fixing screws 1
6 and 17 are inserted from both left and right sides and screwed. The fixing screws 16 and 17 have a function of fixing the handle main body 9 to the handle core portion 6 just in case, so that the handle main body 9 essentially has four pairs of protrusions 12a to 12d and The recesses 14a to 14d are fixed by close fitting.

At the time of use, the user holds the handle 3 by hand and holds the saw 1
To operate. Since the handle 3 is grasped by the user's hand, the one divided body 10 and the other divided body 11 sandwiching the handle core portion 6 are applied with a force in the direction of approaching each other, and the above-mentioned protrusions are formed.
The tight fitting of the recesses 12a to 12d and the recesses 14a to 14d does not come off or shift, and there is no possibility that the handle main body 9 comes off from the handle core 6.

Further, since the handle body 10 is mostly made of synthetic rubber, the handle body 3 has a slight elasticity, is easy to fit in the hand of the user, and can be a handle 3 which does not slip.

FIG. 4 is an exploded perspective view for explaining a detailed configuration of the one-sided body 10. On the other hand, the divided body 10 is composed of a grip portion 20 made of synthetic rubber and a mounting guide portion 21 made of synthetic resin, both of which are fixed by an adhesive.
The grip portion 20 constitutes the outside of the one-side divided body 10 (the side opposite to the surface that abuts on the handle core portion 6), and a step portion 22 into which the attachment guide portion 21 is fitted is provided on the inner surface side thereof. .

The surface of the attachment guide portion 21 is in contact with the side surface of the handle core portion 6 (see FIG. 2), and the above-mentioned four protrusions 12a to 12d are formed on the surface thereof. Further, a step portion 23 into which the handle core portion 6 is fitted is formed on the surface thereof. With such a configuration, when the one divided body 10 is attached to the handle core portion 6 and its cut surface is viewed, as shown in FIG. 3, the right side surface of the handle core portion 6 and the attachment guide are shown. The surface of the portion 21 is flush with the surface. Therefore, if the thickness of the grip portion 20 and the thickness of the other divided body 11 described above are made equal, the saw body 2 is sandwiched exactly in the center of the handle body 9 with good balance.

In addition, the surface of the handle main body 9, that is, the surface of each of the one divided body 10 and the other divided body 11, may be formed with an uneven pattern 18 for enhancing the slip prevention effect as shown in FIGS. 1 and 2. Good.

<Effect of the Invention> Since the outer surface of the handle body is made of rubber as described above, the handle can be easily adapted to the hand, is not slippery, and has a good operability.

Also, when replacing the saw body, the handle body can be easily removed from the saw body, and the removed handle body can be easily attached to the replaced saw body. Therefore,
The handle body can be repeatedly used over a long period of time.

Further, since the handle contains a relatively thick rubber material, it contributes to preventing the vibration generated in the saw by the rubber material from being transmitted to the operator's hand. More specifically, there is also an effect that the rubber material absorbs minute vibrations generated during the sawing work, and does not give an unpleasant sound to the operator's hand.

[Brief description of drawings]

FIG. 1 is a side view of a replaceable blade type hand-operated saw according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of a replaceable blade type hand saw according to an embodiment of the present invention. FIG. 3 is a partial sectional view taken along the line III-III in FIG. FIG. 4 is an exploded perspective view for explaining the configuration of the one-side divided body 10. In the figure, 1 ... Manual saw, 2 ... Saw, 3 ... Handle, 5 ... Blade, 6 ... Handle core, 7a, 7b, 7c, 7
d: through hole, 9: handle body, 10: one-sided body, 1
1 …… The other divided body, 12a, 12b, 12c, 12d …… Protrusion, 14a, 14b,
14c, 14d ... Recesses, 8, 13, 15 ... through holes, 16, 17 ... fixing screws.

Claims (2)

[Scope of utility model registration request] 1. A hand saw having a handle on a saw body, wherein the saw body has a handle core portion that forms the entire length of the handle behind a blade portion on which teeth are arranged. A plurality of through holes are formed in the handle core portion along the lengthwise direction of the handle core portion at predetermined short intervals from each other. A detachable handle body, the handle body having substantially the same length as the handle core portion, covering the handle core portion, and being in contact with one side surface of the handle core portion. A split body and another split body that abuts on the other side surface of the handle core portion are provided, and one split body of the handle main body includes a rubber grip portion and a synthetic resin attachment guide portion, The grip part constitutes the outside of the one-sided body and Is provided with a step portion, and the mounting guide portion is fitted in the step portion, and the surface of the mounting guide portion that abuts the handle core portion corresponds to a plurality of through holes formed in the handle core portion. Then, a plurality of protrusions that are respectively inserted into the through holes and project to the other surface side of the handle core portion are formed, and the other divided body of the handle body is entirely formed of rubber, and Formed on the surface of the handle core portion that contacts the other side surface are a plurality of recesses that respectively receive the tips of a plurality of protrusions that project from the other side surface of the handle core portion through the through holes and that fit closely with the protrusions. The hand-operated saw, wherein the handle main body is attached to the handle core by closely fitting the plurality of protrusions and the recesses. 2. The hand saw according to claim 1, wherein at least one through hole penetrating the handle main body and the handle core portion is formed, and a fixing screw is fitted in the through hole. Is.