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JP4276307B2 - Back metal in replaceable saw - Google Patents
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JP4276307B2 - Back metal in replaceable saw - Google Patents

Back metal in replaceable saw Download PDF

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Publication number
JP4276307B2
JP4276307B2 JP08940798A JP8940798A JP4276307B2 JP 4276307 B2 JP4276307 B2 JP 4276307B2 JP 08940798 A JP08940798 A JP 08940798A JP 8940798 A JP8940798 A JP 8940798A JP 4276307 B2 JP4276307 B2 JP 4276307B2
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JP
Japan
Prior art keywords
back metal
saw blade
saw
blade
tongue piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP08940798A
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Japanese (ja)
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JPH11262902A (en
Inventor
保 岡田
Original Assignee
株式会社岡田金属工業所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社岡田金属工業所 filed Critical 株式会社岡田金属工業所
Priority to JP08940798A priority Critical patent/JP4276307B2/en
Publication of JPH11262902A publication Critical patent/JPH11262902A/en
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Publication of JP4276307B2 publication Critical patent/JP4276307B2/en
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Description

【０００１】
【産業上の利用分野】
この発明は、替え刃式鋸に使用する背金の改良に関するものである。
【０００２】
【従来の技術】
逆「Ｕ」字状に屈曲させた背金の内側に形成した支持部に、鋸替え刃に形成した凹部を掛け合わせることによって、種々厚みの異なった鋸替え刃を背金に支持固定させ得るように構成した替え刃式鋸としては、平成２年実用新案公告第４３６８１号公報記載のものが知られている。
平成２年実用新案公告第４３６８１号のものは、逆「Ｕ」字状に屈曲させた背金の内側に支持部を形成するとともに、支持部が位置する下方の間隙部を、鋸替え刃の基部を容易に差入れ得る巾に設定して解放する一方、背金の先端下方側に鋸替え刃の厚み以下に設定した狭まり部を形成した構成とすることによって、種々厚みの異なった鋸替え刃を装着できるようにしたものである。
【０００３】
【発明が解決しようとする課題】
逆「Ｕ」字状に屈曲させた背金の内側に支持部を形成し、支持部が位置する下方の間隙部を、鋸替え刃の基部を容易に差入れ得る巾に設定して解放するとともに、背金の先端下方側に鋸替え刃の厚み以下に設定した狭まり部を形成した構成とした場合、各種厚みの異なった鋸替え刃の装着を可能にし得るという利点がある反面、背金の天井部が必然的に円弧状となる結果、装着させた鋸替え刃の厚みによっては、鋸替え刃の基部上縁部と背金の内側天井部との間に隙間ができ、鋸での切断時に不愉快なガタツキ音を発生させる可能性があるのである。
すなわち、図５は、逆「Ｕ」字状に屈曲させるとともに、内部に支持部９を形成した背金８に、厚さの異なった鋸替え刃を装着させた場合における縦断面図であるが、天井部が円弧状となっている結果、厚い鋸替え刃４ａを装着させた場合は、鋸替え刃の上縁部が背金の天井部に接触した状態となるのに対し（左図）、薄い鋸替え刃４ｂを装着させた場合、鋸替え刃４ｂの上縁部と背金８の天井部との間に隙間を発生させることになり（右図）、これが原因となって、鋸での切断の際、ガタツキ音を発生させることになるのである。
この発明は、従来のものにみられたこのような欠点を除去しようとするものである。
【０００４】
【課題を解決するための手段】
この発明は、背金１における基部上方部から切り込み部を形成することによって背金の上縁部に舌片部を形成し、背金に鋸替え刃を装着させた場合、該舌片部が鋸替え刃の上縁部５を押圧した状態となるようにすることによって、使用時におけるガタツキ音の発生を防止しようとするものである。
【０００５】
【実施例】
図面にもとづいて、この発明の一実施例を説明すると、背金１は、図１乃至図４に示すとおり、鋼板材を逆「Ｕ」字状に屈曲させるとともに、その内部に、鋸刃４に形成した掛止凹部７を係合させる支持部６が形成せられており、先端下方部には、各種鋸替え刃４の厚み以下に設定した狭まり部が形成せられており、鋸替え刃４を装着させた場合、鋸替え刃４は狭まり部によって挟持せられる構成となっており、しかも、背金１に鋸替え刃４を装着させた場合、背金１の基部側上方部に形成した舌片部２が鋸替え刃４の上縁部５に押圧接触した状態となるように構成されているのである。
【０００６】
すなわち、背金１は、図１乃至図４に示すとおり、金属板を逆「Ｕ」字状に折り曲げ屈曲させるとともに、基部側の間隙部内に円板を配置固定させることによって支持部６が形成された構成となっており、しかも、基部側上方部には、背金１の基部側上縁部から切り込み部３を形成するとともに、上板部を残すことによって舌片部２を形成し、その舌片部２の端部をやや下方側に屈曲させた構成となっているのである。
【０００７】
従って、背金１に鋸替え刃４を装着させるに際しては、背金１の支持部６に、鋸替え刃４に形成した掛け止め凹部７を掛け合わせた後、鋸替え刃４を上方側に回動させることによって行なわれ、鋸替え刃４を装着させた場合にあっては、舌片部２により鋸替え刃４の上縁部５が押圧された状態となるのである。
【０００８】
【発明の効果】
この発明にかかる鋸柄は、上記のような構成であって、厚みの異なった種々の鋸替え刃、特に、薄刃の鋸替え刃４を装着させた場合であっても、鋸替え刃４の基部上縁部５を背金１に形成した舌片部２が当接した状態となり、鋸での切断時等に不愉快なガタツキ音の発生を防止し得るという利点があるのである。
【図面の簡単な説明】
【図１】替え刃式鋸における鋸替え刃の装着要領を示す正面図である。
【図２】背金の正面図である。
【図３】背金の構成を示す縦断面図である。
【図４】背金に鋸替え刃を装着させた状態を示す背金の縦断面図である。
【図５】厚みの異なった鋸替え刃を装着させた場合の状態を示す縦断面図である。
【符号の説明】
１ 背金
２ 舌片部
３ 切り込み部
４ 鋸替え刃
５ 上縁部
６ 支持部[0001]
[Industrial application fields]
The present invention relates to an improvement of a back metal used in a replaceable blade type saw.
[0002]
[Prior art]
A saw blade with various thicknesses can be supported and fixed to the back metal by multiplying a recess formed on the saw blade with a support formed inside the back metal bent in an inverted “U” shape. As a replaceable blade type saw configured as described above, the one described in Utility Model Publication No. 43681 is known.
The utility model publication No. 43681 in 1990 has a support portion formed inside the back metal bent in an inverted “U” shape, and a lower gap portion where the support portion is located is formed with a saw blade. While the base is set to a width that can be easily inserted and released, a narrowed portion set below the thickness of the saw blade is formed on the lower side of the tip of the back metal. Can be installed.
[0003]
[Problems to be solved by the invention]
A support part is formed inside the back metal bent in an inverted “U” shape, and the lower gap part where the support part is located is set to a width that allows the base of the saw blade to be easily inserted and released. In addition, when the narrowed portion set below the thickness of the saw blade is formed on the lower side of the tip of the back metal, there is an advantage that it is possible to mount saw blades of various thicknesses, while the back metal As a result of the ceiling part becoming an arc shape, there is a gap between the upper edge of the base of the saw blade and the inner ceiling of the back metal, depending on the thickness of the saw blade that is installed. Sometimes it can generate an unpleasant rattle.
That is, FIG. 5 is a longitudinal sectional view when a saw blade having a different thickness is attached to a back metal 8 that is bent in an inverted “U” shape and has a support portion 9 formed therein. As a result of the arc shape of the ceiling, when the thick saw blade 4a is mounted, the upper edge of the saw blade comes into contact with the back metal ceiling (left figure). When the thin saw blade 4b is mounted, a gap is generated between the upper edge portion of the saw blade 4b and the ceiling portion of the back metal 8 (right figure). A rattling noise is generated when cutting at a point.
The present invention seeks to eliminate such drawbacks found in the prior art.
[0004]
[Means for Solving the Problems]
In the present invention, when a tongue piece is formed on the upper edge of the back metal by forming a notch from the upper part of the base of the back metal 1, and when a saw blade is attached to the back metal, the tongue piece is By causing the upper edge portion 5 of the saw blade to be in a pressed state, it is intended to prevent the generation of rattling noise during use.
[0005]
【Example】
An embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the back metal 1 bends a steel plate material in an inverted “U” shape and includes a saw blade 4 inside thereof. A support portion 6 is formed to engage with the latching recess 7 formed on the top, and a narrow portion set to be equal to or less than the thickness of the various saw blades 4 is formed at the lower portion of the tip. When the saw blade 4 is mounted, the saw blade 4 can be sandwiched by the narrowed portion, and when the saw blade 4 is mounted on the back metal 1, it is formed at the upper part on the base side of the back metal 1. Thus, the tongue piece portion 2 is configured to be in a state of being pressed against the upper edge portion 5 of the saw blade 4.
[0006]
That is, as shown in FIGS. 1 to 4, the back metal 1 is formed by forming a support portion 6 by bending and bending a metal plate in an inverted “U” shape and arranging and fixing a disc in a gap portion on the base side. In addition, in the upper part on the base side, the notch 3 is formed from the upper edge on the base side of the back metal 1 and the tongue piece 2 is formed by leaving the upper plate part, The end of the tongue piece 2 is bent slightly downward.
[0007]
Therefore, when the saw blade 4 is mounted on the back metal 1, the retaining recess 7 formed on the saw blade 4 is hung on the support portion 6 of the back metal 1, and then the saw blade 4 is moved upward. When the saw blade 4 is mounted by turning, the upper edge 5 of the saw blade 4 is pressed by the tongue piece 2.
[0008]
【The invention's effect】
The saw handle according to the present invention has the above-described configuration, and even when various saw blades having different thicknesses, in particular, when the thin blade saw blade 4 is mounted, the saw blade 4 The tongue piece portion 2 having the base upper edge portion 5 formed on the back metal 1 comes into contact, and there is an advantage that unpleasant rattling noise can be prevented when cutting with a saw.
[Brief description of the drawings]
FIG. 1 is a front view showing a mounting procedure of a saw blade in a replaceable blade type saw.
FIG. 2 is a front view of a back metal.
FIG. 3 is a longitudinal sectional view showing a configuration of a back metal.
FIG. 4 is a longitudinal sectional view of a back metal showing a state in which a saw blade is attached to the back metal.
FIG. 5 is a longitudinal sectional view showing a state where saw blades having different thicknesses are mounted.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Back metal 2 Tongue piece part 3 Cutting part 4 Saw blade 5 Upper edge part 6 Support part

Claims (1)

逆「Ｕ」字状に屈曲させた背金１の内側に配置させた支持部６に、鋸替え刃４に形成した凹部７を掛け合わせた後、鋸替え刃４を上方側に回動させることによって、鋸替え刃４を支持し得るように構成した替え刃式鋸における背金にあって、屈曲に先立って基部上方部から切り込み部３を形成しておくことによって、残存する背金基部の頂部により形成される、切り込み部前端から後方にのびる舌片部２を形成するとともに、舌片部２を下方側にやや屈曲させ、背金１に鋸替え刃４を装着させた場合、該舌片部２が鋸替え刃４の上縁部５に押圧接触した状態となるように構成したことを特徴とする替え刃式鋸における背金。After the concave portion 7 formed on the saw blade 4 is put on the support portion 6 arranged inside the back metal 1 bent in an inverted “U” shape, the saw blade 4 is rotated upward. Thus, in the back metal in the replaceable blade type saw configured to support the saw blade 4, the notch 3 is formed from the upper part of the base prior to bending, whereby the remaining back metal base When the tongue piece 2 extending backward from the front end of the cut portion is formed, the tongue piece 2 is bent slightly downward, and the saw blade 4 is attached to the back metal 1, A back metal for a replaceable blade type saw, characterized in that the tongue piece portion 2 is in a state of being pressed against the upper edge portion 5 of the saw replaceable blade 4.
JP08940798A 1998-03-17 1998-03-17 Back metal in replaceable saw Expired - Fee Related JP4276307B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08940798A JP4276307B2 (en) 1998-03-17 1998-03-17 Back metal in replaceable saw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08940798A JP4276307B2 (en) 1998-03-17 1998-03-17 Back metal in replaceable saw

Publications (2)

Publication Number Publication Date
JPH11262902A JPH11262902A (en) 1999-09-28
JP4276307B2 true JP4276307B2 (en) 2009-06-10

Family

ID=13969798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08940798A Expired - Fee Related JP4276307B2 (en) 1998-03-17 1998-03-17 Back metal in replaceable saw

Country Status (1)

Country Link
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