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handsaw

A hand saw and saw blade technology, which is applied to pad saws, saw blades, circular saws, etc., can solve the problems of very different structures and functions, different technical fields, etc., and achieves the effect of increasing the arrangement density and improving the sharpness of the edge.

Active Publication Date: 2019-06-07
UM INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The so-called power saws with overwhelming power such as the above-mentioned electric saws and the hand saws that do not use power but only use human power to cut are the same in that they all use cutting teeth, but in fact, they are different from their structures, Functional considerations vary widely, essentially in different technical fields

Method used

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Embodiment Construction

[0065] Next, a hand saw according to an embodiment of the present invention will be described with reference to the drawings.

[0066] First, refer to Figure 1 to Figure 5 The first embodiment will be described.

[0067] exist figure 1 Among them, the hand saw has a handle portion 10 , a saw blade 20 and saw teeth 30 . In addition, the handle part 10 is partially omitted in the drawing.

[0068] The hand saw is shown as a foldable hand saw in which the saw blade 20 can be folded on the handle 10 , but it does not necessarily have to be a foldable hand saw, and all hand saws are applicable.

[0069] The hand saw is a so-called single-edged saw, and saw teeth 30 are arranged on one side edge 21 in the longitudinal direction of the saw blade 20 . Of course, a two-edged saw may be used in which the teeth 30 are arranged on the side edges 21 in the longitudinal direction on both sides of the saw blade 20 .

[0070] in addition, figure 1 The hand saw shown is configured as ...

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Abstract

The object of the present invention is to provide a hand saw that remarkably eliminates the clogging of cutting powder and maintains the pitch of the cutting edge densely without making the pitch of the blade tip sparse. The area of ​​the tip cutting surface of the "tooth" is ensured to be large, thereby sufficiently preventing a decrease in sharpness due to clogging of chips, and at the same time greatly improving the sharpness itself. The hand saw of the present invention is a hand saw in which a plurality of saw teeth are arranged on the side edge (21) of the saw blade (20) in the longitudinal direction. , and each prismatic tooth (30) is configured such that in at least adjacent prismatic teeth, the vertical angle θ from the edge surface (21a) of the long side edge (21) of the saw blade (20) The angles are the same, whereby the slits (S) between adjacent prismatic teeth are configured to be constant in the vertical direction of the teeth.

Description

technical field [0001] This invention relates to hand saws. Background technique [0002] Saws have a long history, and hand saws have been used by many people from their earliest days until today. [0003] On the other hand, an electric saw is an article developed in recent years, and is an electric tool that cuts wood or the like with overwhelming horsepower using electric power. The same applies to a chain saw using an engine. The so-called power saws with overwhelming power such as the above-mentioned electric saws and the hand saws that do not use power but only use human power to cut are the same in that they all use cutting teeth, but in fact, they are different from their structures, The ways in which functionality is considered vary widely, and the technical domains differ substantially. [0004] Figure 12 An example of a hand saw is shown. A hand saw is generally composed of a structure in which a long and thin metal saw blade 2 is attached to the top of a han...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27B21/00
CPCB27B33/10B23D61/121B27B11/00B27B21/04B27B21/00
Inventor 宫胁昌三
Owner UM INDS
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