JP3021880U - Saw body - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a saw blade capable of smoothly starting the saw when cutting. [Structure] In a saw blade (2) in which a cutting tooth group (2a) consisting of horizontal and / or vertical stitches is engraved on an edge of a steel plate, saw dust is discharged in an area in which the cutting tooth group (2a) is engraved. Notch recesses (2b) with a certain interval (a) and without
(B) Set and.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to the improvement of the saw blade.

[0002]

[Prior art]

 A saw is usually mainly composed of a saw blade and a handle. Of these, the saw blade is made of steel plate, and there are single-edged saw blades with side teeth (Edo eyes) and vertical teeth, etc. carved on one side edge, and double-edged saw blades carved on both side edges. . The cutting tooth group includes not only those having only horizontal stitches and those having only vertical stitches, but also multi-types that mix these, and this multi-type is capable of vertical pulling, horizontal pulling, diagonal pulling, etc. Is currently in general use. In addition, a saw blade configured as a replaceable blade is widely used.

By the way, in the above-mentioned saw blade, as shown in FIG. 3, for example, notch recesses (Y) for discharging sawdust at predetermined intervals are provided over the entire region where the cutting tooth group (Z) is engraved. What is known is known. However, the notch recess (Y) for discharging sawdust discontinuously divides the cutting tooth group (Z), and when the cutting of the material to be cut (for example, product) is started, the cutting line is to be cut. When performing so-called small pulling to form a cutting groove, the notch recess (Y) causes the cutting tooth group (Z) to discontinuously abut the cutting surface, resulting in uneven cutting force. There is a problem that the smooth reciprocating motion of the saw blade is hindered by catching the corner of the cutting material in the recess (Y) or the saw blade flies off the predetermined cutting line and the product is damaged. There is.

[0004]

[Problems to be solved by the device]

 The present invention is to provide a saw blade capable of smoothly starting the saw when cutting.

[0005]

[Means for Solving the Problems]

 Thus, according to the invention of "Claim 1" of the present application, "a saw blade (2a) in which a cutting tooth group (2a) composed of lateral stitches (21) and / or longitudinal stitches (22) is engraved on an edge portion of a steel plate (2 ), The section (a) in which the sawdust discharging notch recesses (2b) are provided at a predetermined interval and the section (b) in which the saw tooth discharge notch recesses (2b) are provided in the area in which the cutting tooth group (2a) is engraved are set. Characteristic saw blade (2) ”is provided.

According to the saw blade (2) of the present invention, the section (b) where the cutting waste group (2a) is not provided with the sawdust discharging notch (2b) is applied to the planned cutting line. If the saw blade (2) is reciprocated in (b), the cutting work will be started smoothly without being caught. Then, when the cutting line is cut to a predetermined depth, the saw blade (2) is guided in the already cut cutting groove even if it is reciprocated over the entire region where the cutting tooth group (2a) is engraved. It will move smoothly without being caught in the notch recess (2b) for discharging sawdust, and will be cut. Further, sawdust generated in the cutting process is discharged from the sawdust discharge notch recess (2b).

[0007]

[Embodiment of device]

 The section (b) where the notch recess (2b) for discharging sawdust is not provided is naturally set to be longer than the interval between the notch recesses in the section (a) where the notch recess (2b) is provided. It is a thing. The section (b) may be provided in any of the regions where the cutting tooth group (2a) is engraved, but it is preferable to be provided on the hand side so that the start of cutting can be carefully performed. It is a thing. The saw blade (2) of the present invention may itself be configured as a replaceable blade type, as shown in "Claim 2" of the present application.

Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited thereto. Embodiment 1 FIG. 1 is a schematic front view of a saw provided with an example of the saw blade of the present invention. In the figure, the saw (1) is mainly composed of a saw blade (2) and a handle (3). The saw blade (2) is a single-edged saw in this example, and has a replaceable blade type that can be attached to and detached from the handle (3).

The saw blade (2) is made of a steel plate, and is entirely quenched and tempered so that the entire saw blade has high hardness and high toughness. Therefore, it is also possible to make a dressing if necessary. A cutting tooth group (2a) is formed on one side edge of the saw blade (2) over substantially the entire effective length thereof. As shown in the enlarged view of FIG. 2, the cutting tooth group (2a) in this example is finished in a multi-type in which horizontal (Edo) (21) and vertical (22) grains are mixed and engraved. There is.

Of the region in which the cutting tooth group (2a) is engraved, notch recesses (2b) for sawdust discharge are provided at predetermined intervals in a section (a) about 2/3 from the tip side. The cutout recess (2b) is not provided in the section (b) about 1/3 from the hand side.

In the saw blade (2), a core (24) is projected from a rear end of a neck (23) formed on the proximal side thereof. An engaging recess (25) is provided on the side surface of the core (24) so as to engage with the tip of a screw (33) screwed into the handle (3) described later. ing.

The handle (3) has an oval cross section, and a storage hole (31) opening at the front end face is formed in the center of the handle (3). A reinforcing metal member (32) formed by bending a plate material into a substantially U-shaped cross section is inserted into the accommodation hole (31). A screw (33) reaching the storage hole (31) is screwed into the trunk of the handle (3), and a portion of the reinforcing metal fitting (32) corresponding to the screw is cut out. Therefore, insert the core (24) of the saw blade (2) into the auxiliary metal fitting (32) in the storage hole (31) of the handle (3) and screw the screw (33) from the trunk of the handle (3). The saw blade (2) can be attached to the handle (3) by inserting the saw blade (2) into the engaging recess (25) of the core (24).

When cutting a predetermined material using the saw (1) configured as described above, the notch recess (2b) for sawdust discharge is formed in the region where the cutting tooth group (2a) is engraved. If the section (b) not provided is applied to the material cutting line and the saw blade (2) is reciprocated in this section (b), it will be continuously engraved in this section (b). The cutting tooth group (2a) abuts the material surface with a substantially uniform force, which causes the saw blade (2) to move smoothly and a cutting groove to be formed on a predetermined planned cutting line, so that the cutting work can be performed smoothly. It will be started.

Then, when the cutting groove is cut to a predetermined depth, the saw blade (2) will be inserted into the already cut cutting groove even if the cutting groove group (2a) is reciprocated over the entire area engraved. Since it moves by being guided, even if there is a notch recess (2b) for discharging sawdust, it will move smoothly without being caught by it. Further, saw dust generated during the cutting work is discharged to the outside from the saw dust discharge notch recess (2b), so that the cutting groove is not clogged and the work can be smoothly performed.

[0015]

[Effect of device]

 According to the present invention, in the region where the cutting tooth group of the saw blade is engraved, the section where the notch recess for sawdust discharge is not provided is set. The start-up can be performed smoothly, the product is not damaged except where it is cut, and the worker himself or herself is not scratched. Therefore, the work efficiency can be improved and the work can be safely carried out.

[Brief description of drawings]

FIG. 1 is a schematic front view including a partial cutout of a saw using an example of the saw blade of the present invention.

FIG. 2 is an enlarged view of part A of FIG.

FIG. 3 is a schematic front view of a conventional saw blade.

[Explanation of symbols]

(1)… Saw (2)… Saw blade (2a)… Cutting teeth group (2b)… Notch recess for sawdust discharge (3)… Stalk (21)… Landscape (22)… Longitudinal (23)… Neck ( 24)… Core (31)… Storing hole (32)… Reinforcing bracket

Claims (2)

[Scope of utility model registration request] 1. A saw blade in which a cutting tooth group having horizontal and / or vertical stitches is engraved on an edge of a steel plate, and a notch recess for discharging sawdust is provided at predetermined intervals in a region in which the cutting tooth group is engraved. A saw blade characterized by setting a section provided in and a section not provided. 2. The saw blade according to claim 1, wherein the saw blade is a replacement blade.