JPS6234725Y2 - - Google Patents
Info
- Publication number
- JPS6234725Y2 JPS6234725Y2 JP1176082U JP1176082U JPS6234725Y2 JP S6234725 Y2 JPS6234725 Y2 JP S6234725Y2 JP 1176082 U JP1176082 U JP 1176082U JP 1176082 U JP1176082 U JP 1176082U JP S6234725 Y2 JPS6234725 Y2 JP S6234725Y2
- Authority
- JP
- Japan
- Prior art keywords
- arm
- blade
- hinge
- cutting
- base
- 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
Links
- 238000005520 cutting process Methods 0.000 claims description 17
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Sawing (AREA)
Description
【考案の詳細な説明】
本考案は携帯用丸鋸機の割刃装置に関するもの
である。[Detailed Description of the Invention] The present invention relates to a splitting blade device for a portable circular saw.
一般にのこ刃で長い板材を切削すると、切削し
ているのこ刃の両側面は板材の既に切削された部
分によつて締付けられ、その摩擦により切削作業
が困難となつたりのこ刃と板材の反発現象を起こ
したりして危険である。このため普通は、既に切
削された部分に何らかのクサビを打ち込み切断部
との摩擦を防いで切削作業をしている。携帯用丸
鋸機では、のこ刃の外周に近接して該のこ刃の一
部を覆う状態に同一面内に設けた割刃にクサビ作
用を行なわせることで、上記した欠点をなくして
いる。携帯用丸鋸機では第１図に示すごとく、ベ
ース１の回動によつてベース１からののこ刃５の
突出量が変化するいわゆる切込調整に応じてベー
ス１に対する割刃１４の突出量が変化するよう
に、割刃１４を支持しのこ刃と同心の支持部１３
に対し回動可能なアーム１１と、切込調整時にベ
ースと一体に回動するようベース１先端に連結さ
れたヒンジ３とをリンク１２で可動に連結してい
る。切込量を変えた場合、ヒンジ３、リンク１２
によつてアーム１１に回動力が与えられ、割刃１
４は上方又は下方に回動する。以上の構成による
従来の割刃機構では、切込量を変化させる操作力
によつて割刃１４を回動するが、アーム１１と支
持部１３、アーム１１とリンク１２、リンク１２
とヒンジ３の各摺動部の摩擦抵抗等のため、切込
調整の操作力が重くなる欠点があつた。又、切断
作業時、リンク１２によりのこ刃５の刃先が見に
くくなるという欠点があつた。 Generally, when cutting a long plate with a saw blade, both sides of the saw blade are squeezed by the already cut part of the plate, and the friction between the saw blade and the plate makes the cutting process difficult. This is dangerous as it may cause a backlash phenomenon. For this reason, usually some kind of wedge is driven into the part that has already been cut to prevent friction with the cutting part during cutting work. Portable circular saws eliminate the above-mentioned drawbacks by having a splitting blade installed in the same plane close to the outer periphery of the saw blade and covering a part of the saw blade perform a wedge action. There is. In a portable circular saw machine, as shown in FIG. 1, the protrusion of the splitting blade 14 relative to the base 1 is adjusted in accordance with the so-called depth of cut adjustment, in which the amount of protrusion of the saw blade 5 from the base 1 changes as the base 1 rotates. A support part 13 that supports the split blade 14 and is concentric with the saw blade so that the amount changes.
A link 12 movably connects an arm 11 that can rotate relative to the base 1 and a hinge 3 that is connected to the tip of the base 1 so as to rotate together with the base when adjusting the cutting depth. When changing the depth of cut, hinge 3, link 12
Rotating force is applied to the arm 11 by the splitting blade 1.
4 rotates upward or downward. In the conventional splitting blade mechanism with the above configuration, the splitting blade 14 is rotated by an operating force that changes the depth of cut.
However, due to the frictional resistance of each sliding part of the hinge 3, the operating force for adjusting the cutting depth becomes heavy. Another disadvantage is that the link 12 makes it difficult to see the cutting edge of the saw blade 5 during cutting.
本考案の目的は、上記した従来技術の欠点をな
くし、携帯用丸鋸機の操作性、作業性を向上する
ことにある。 The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to improve the operability and workability of a portable circular saw.
本考案は引張ばねが引つ張られるに従い復元力
を増す点に着目し、切込調整操作時に復元力が有
効に作用するようにアーム１１とヒンジ３との間
の関係を工夫したものである。 The present invention focuses on the fact that the restoring force increases as the tension spring is pulled, and the relationship between the arm 11 and the hinge 3 is devised so that the restoring force acts effectively during the cutting adjustment operation. .
本考案を実施例を用いて説明する。第２図の実
施例において、ベース１はその先端部に取り付け
られたヒンジ３を介し、ピン４により機体２の前
端部に回動可能に連結されている。のこ刃５は機
体２に内蔵された図示しないモータによつて回転
される。ベース１をピン４を中心として回動する
ことにより、ベース１からののこ刃５の突出量が
変化し、いわゆる切込量が変えられる。１１は機
体２にのこ刃５と同心位置で設けられた支持部１
３に回動可能に取り付けたアームである。２１は
ロープ又はワイヤ等の線状部材で、その一端をア
ーム１１の支持部１３近傍に設けた穴１７に、他
端をヒンジ３に設けた穴１９にそれぞれ掛止して
ある。また前記アーム１１の支持部１３近傍に設
けたもう一つの穴１８には、一端を機体２にネジ
等の手段により固定されたスプリング２２の他の
一端を掛止し、該スプリング２２によりアーム１
１に、第２図において支持部１３を中心とし右回
り（時計回り）に回動する方向の力を付勢する。
ここでベース１の底面を基準としのこ刃５の下端
に対する割刃１４の下端位置を、切込調整範囲に
おいて一定に保つためには、アーム１１の回転中
心、ピン４の位置、アーム１１の穴１７およびヒ
ンジ３の穴１９の各位置を一定の関係で配置しな
ければならないことは衆知の通りである。割刃１
４は取付ボルト１５によつてアーム１１に固定さ
れている。以上の構成において、切込量を浅くし
た場合は、ベース１の回動によりヒンジ３もベー
ス１と一体的に回転し、ヒンジ３に掛止された線
状部材２１を介し該線状部材２１の他方の一端が
掛止されているアーム１１が左回り（反時計回
り）に回動する。前記アーム１１の回動と伴に割
刃１４は下方に回動し、のこ刃５の下端に対する
割刃１４の下端位置を一定に保つ。この時、スプ
リング２２は引つ張られアーム１１を右回り（時
計回り）にもどそうとする復元力が蓄えられる。
逆に切込量を深くした場合は、ベース１の回動と
一体的にヒンジ３が回転し、該ヒンジ３とアーム
１１の間に掛止された線状部材２１の張力が解
け、スプリング２２の復元力によりアーム１１お
よび割刃１４が右回り（時計回り）に回動し割刃
１４を上方へ移動する。 The present invention will be explained using examples. In the embodiment shown in FIG. 2, the base 1 is rotatably connected to the front end of the body 2 by a pin 4 via a hinge 3 attached to its tip. The saw blade 5 is rotated by a motor (not shown) built into the machine body 2. By rotating the base 1 about the pin 4, the amount of protrusion of the saw blade 5 from the base 1 changes, and the so-called depth of cut can be changed. Reference numeral 11 denotes a support part 1 provided on the machine body 2 at a position concentric with the saw blade 5.
This is an arm rotatably attached to 3. 21 is a linear member such as a rope or wire, one end of which is hooked into a hole 17 provided near the support portion 13 of the arm 11, and the other end hooked into a hole 19 provided in the hinge 3. Further, in another hole 18 provided near the support portion 13 of the arm 11, the other end of a spring 22, one end of which is fixed to the body 2 by means such as a screw, is hooked, and the spring 22 allows the arm to
1, a force is applied in a direction to rotate clockwise around the support portion 13 in FIG.
Here, in order to keep the lower end position of the splitting blade 14 with respect to the lower end of the saw blade 5 using the bottom surface of the base 1 as a reference in the cutting adjustment range, the rotation center of the arm 11, the position of the pin 4, the position of the arm 11, It is well known that the positions of the hole 17 and the hole 19 of the hinge 3 must be arranged in a certain relationship. split blade 1
4 is fixed to the arm 11 with a mounting bolt 15. In the above configuration, when the depth of cut is made shallow, the hinge 3 also rotates integrally with the base 1 due to the rotation of the base 1, and the linear member 21 The arm 11, to which the other end is latched, rotates counterclockwise. As the arm 11 rotates, the splitter blade 14 rotates downward, and the lower end position of the splitter blade 14 relative to the lower end of the saw blade 5 is kept constant. At this time, the spring 22 is pulled and a restoring force is accumulated to return the arm 11 to the right (clockwise).
Conversely, when the depth of cut is made deeper, the hinge 3 rotates together with the rotation of the base 1, the tension of the linear member 21 hooked between the hinge 3 and the arm 11 is released, and the spring 22 The restoring force causes the arm 11 and the splitting blade 14 to rotate clockwise, thereby moving the splitting blade 14 upward.
本案によれば、割刃１４の回動にかかわる摺動
部はアーム１１と支持部１３のみであるため、摩
擦抵抗等は減少し、アーム１１に係わるスプリン
グ２２の復元力が切込深さに応じて働くため、切
込調整操作がスムーズになる。又、切断作業は一
般に刃先を見ながら行なうが、線状部材２１は視
界を防げるほどではないため作業性は向上する。 According to the present invention, since the only sliding parts involved in the rotation of the splitting blade 14 are the arm 11 and the support part 13, frictional resistance, etc. is reduced, and the restoring force of the spring 22 related to the arm 11 is adjusted to the depth of cut. Since it works accordingly, the depth of cut adjustment operation becomes smooth. Further, although the cutting operation is generally performed while looking at the cutting edge, the linear member 21 does not obstruct the view, so the work efficiency is improved.
本考案によれば、割刃１４のクサビ作用によ
り、のこ刃５が木材によつて締め付けられること
がなく、切断作業を容易にかつ安全に行なうこと
ができるのは勿論であるが、さらに、切込調整操
作に関わる割刃１４の回動をスムーズにしたた
め、操作性を一段と向上することができる。又、
ヒンジ３とアーム１１を連結する部材をロープ、
ワイヤ等の線状部材２１としたため、刃先を見な
がらの切断作業が楽にできるようになる。 According to the present invention, due to the wedge action of the splitting blade 14, the saw blade 5 is not clamped by the wood, and the cutting operation can be easily and safely performed. Since the rotation of the splitting blade 14 related to the cutting adjustment operation is made smooth, the operability can be further improved. or,
The member connecting the hinge 3 and the arm 11 is a rope,
Since the linear member 21 such as a wire is used, the cutting operation can be easily performed while looking at the cutting edge.
第１図は従来技術による携帯用電気丸のこの部
分断面図である。第２図は本考案による携帯用電
気丸のこの一実施例を示す部分断面図である。
図において、１はベース、２は機体、３はヒン
ジ、４はピン、５はのこ刃、１１はアーム、１２
はリンク、１３は支持部、１４は割刃、１５は取
付ボルト、１７は穴Ａ、１８は穴Ｂ、１９は穴
Ｃ、２１は線状部材、２２はスプリングである。
FIG. 1 is a partial sectional view of a portable electric circular saw according to the prior art. FIG. 2 is a partial sectional view showing an embodiment of a portable electric circular saw according to the present invention. In the figure, 1 is the base, 2 is the body, 3 is the hinge, 4 is the pin, 5 is the saw blade, 11 is the arm, 12
13 is a support part, 14 is a split blade, 15 is a mounting bolt, 17 is a hole A, 18 is a hole B, 19 is a hole C, 21 is a linear member, and 22 is a spring.
Claims (1)
アームの一端に、鋸刃の後部に対しその外周と若
干の間隙を有しかつ同一平面に平板状の割刃を装
着し、前記アームの支持部付近の他端には引張ば
ねを掛止し前記アームが時計方向に回転する向き
に該引張ばねの他端を機体に固定し、前記アーム
の支持部付近には一端をヒンジに掛止したロープ
又はワイヤ等の線状部材の他端を該線状部材を引
つ張つたとき前記アームが反時計方向に回転する
向きに掛止すると共に、前記ヒンジを前記割刃が
鋸刃の切込み量に応じて回動し得るように丸鋸機
のベースの一部に連結してなることを特徴とした
携帯用丸鋸機の割刃装置。 At one end of the arm that is rotatably attached to the main shaft of the circular saw machine, a flat splitting blade is attached to the rear of the saw blade, with a slight gap between it and the outer periphery and on the same plane. A tension spring is hooked to the other end near the support portion, the other end of the tension spring is fixed to the body in a direction in which the arm rotates clockwise, and one end is hooked to a hinge near the support portion of the arm. The other end of a linear member, such as a rope or wire, is latched in such a direction that the arm rotates counterclockwise when the linear member is pulled, and the splitting blade cuts the hinge into a saw blade. A splitting blade device for a portable circular saw machine, characterized in that it is connected to a part of the base of the circular saw machine so as to be able to rotate according to the amount of cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1176082U JPS58115308U (en) | 1982-01-29 | 1982-01-29 | Portable circular saw machine splitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1176082U JPS58115308U (en) | 1982-01-29 | 1982-01-29 | Portable circular saw machine splitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58115308U JPS58115308U (en) | 1983-08-06 |
| JPS6234725Y2 true JPS6234725Y2 (en) | 1987-09-04 |
Family
ID=30024354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1176082U Granted JPS58115308U (en) | 1982-01-29 | 1982-01-29 | Portable circular saw machine splitting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58115308U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5252375B2 (en) * | 2008-12-26 | 2013-07-31 | 日立工機株式会社 | Portable cutting machine |
-
1982
- 1982-01-29 JP JP1176082U patent/JPS58115308U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58115308U (en) | 1983-08-06 |
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