JPS6153922B2 - - Google Patents
Info
- Publication number
- JPS6153922B2 JPS6153922B2 JP56092729A JP9272981A JPS6153922B2 JP S6153922 B2 JPS6153922 B2 JP S6153922B2 JP 56092729 A JP56092729 A JP 56092729A JP 9272981 A JP9272981 A JP 9272981A JP S6153922 B2 JPS6153922 B2 JP S6153922B2
- Authority
- JP
- Japan
- Prior art keywords
- circular saw
- motor
- saw blade
- power supply
- handle
- 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
- 230000005484 gravity Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Sawing (AREA)
Description
【発明の詳細な説明】 本発明は携帯用丸鋸装置に関するものである。[Detailed description of the invention] The present invention relates to a portable circular saw device.
従来例を第１図に示す。すなわち、モータ２と
電池よりなる電源部４とを並設して、ハンドル５
を押付けて丸鋸刃１にて試料を切断するものであ
る。このため、従来の携帯用丸鋸装置は一般に本
体６が横長となり、かかる丸鋸装置を用いて試料
を切断すると、第２図のようにハンドル５の押圧
力F1と、試料７の切断抵抗F2とにより両力の作
用点間距離l1に比例した回転モーメントＭが働
く。従つてこの回転モーメントＭのため、装置は
同図中時計廻りに回転して切断方向がずれるもの
であり、試料７を真つ直ぐに切断することができ
ないばかりでなく、丸鋸刃１の側面が試料と接触
して摩耗擦が生じ、切断音が大きくなり、電池に
対する負荷が大きくなり電池寿命が短かくなると
いう欠点があつた。この欠点を解決するため、た
とえば第１図中点線で示すようにハンドル５を丸
鋸刃１に近接配置して前記作用点間距離l1を短か
くすることが考えられるが、このようにハンドル
５を設定すると、ハンドル５が装置の重心からず
れ、切断前や切断後に装置を持つたとき装置が傾
いて持ちにくくなるものであり、さらには切断セ
ツト時に丸鋸刃１の刃先を墨線等に合せにくく使
用上不都合を生じる。 A conventional example is shown in FIG. That is, the motor 2 and the power supply unit 4 made of a battery are arranged side by side, and the handle 5
The sample is cut with the circular saw blade 1 by pressing the button. For this reason, conventional portable circular saw devices generally have a horizontally elongated main body 6, and when cutting a sample using such a circular saw device, the pressing force F1 of the handle 5 and the cutting resistance of the sample 7 as shown in FIG. A rotational moment M proportional to the distance l 1 between the points of application of both forces acts due to F 2 . Therefore, due to this rotational moment M, the device rotates clockwise in the figure, causing the cutting direction to deviate, which not only makes it impossible to cut the sample 7 straight, but also causes the side surface of the circular saw blade 1 to deviate. There were drawbacks such as abrasion caused by contact with the sample, increased cutting noise, increased load on the battery, and shortened battery life. In order to solve this drawback, for example , as shown by the dotted line in FIG. If set to 5, the handle 5 will shift from the center of gravity of the device, making the device tilted and difficult to hold before or after cutting, and furthermore, the cutting edge of the circular saw blade 1 will not touch the black line, etc. when setting it for cutting. Difficult to match, causing inconvenience in use.
一方、ハンドル５と装置の一端間寸法（第１図
l2で示す）が長いと、第３図のように、切断時に
左端が左手に当り巾の短かい試料の切断ができな
くなるものである。 On the other hand, the dimension between the handle 5 and one end of the device (Fig.
If the length (indicated by l 2 ) is long, as shown in Figure 3, the left end will hit your left hand during cutting, making it impossible to cut short samples.
本発明は上述の点に鑑みて為されたものであつ
て、その主な目的とするところは、丸鋸刃とハン
ドルとの距離を小さくして試料の切断時において
ハンドルの回りに生じるモーメントが小さくなる
ようにし、巾の短い試料でも切断可能な携帯用丸
鋸装置を提供することにある。 The present invention has been made in view of the above points, and its main purpose is to reduce the distance between the circular saw blade and the handle to reduce the moment generated around the handle when cutting a sample. The purpose of the present invention is to provide a portable circular saw device that is small in size and capable of cutting even short samples.
本発明を図示実施例に基づき詳述する。丸鋸刃
駆動用モータ２は円柱状直流モータにより形成さ
れており、合成樹脂製ハウジング３内一側に内蔵
されている。このモータ２の側周にはモータ駆動
用の電源部４が配設されている。上記電源部４は
第７図のようにモータ２の回転軸１３を中心とす
る１つの円周上でモータ２の周囲を囲む形にＬ字
状に乾電池８を配設しているものであるが、乾電
池８はモータ２の回転軸１３を中心とする１つの
円周上でモータ２の周囲を囲む形であれば、第８
図乃至第１３図のように字状及び字状及びコ
字状及びリング状に配設しても良いし、また第１
４図のようにモータ２の一側周に重ねて配設して
も良い。ところでこの電源部４は上述のように乾
電池８により構成されているものであるが、第１
５図ａ，ｂのように充電可能な電池９とこの電池
９を充電する電源トランス１０とにより構成して
も良い。一方、上記電源部４は第１６図のような
Ｌ字状の長尺部材よりなる合成樹脂製電源ケース
１１に収納されており、この電源ケース１１を第
６図のようにハウジング３の一端に着脱自在に装
着している。ハウジング３と一体成型されている
ハンドル５は略コ字状とされモータ２の上方にて
突設されている。このハンドル５は丸鋸刃１の回
転軸と略直交し装置の重心を含む面内でハウジン
グ３の外周面に突設されており、ハンドル５を持
つた時に装置が傾くことはなく、電源部４がモー
タ２の側周に配設されているので、ハンドル５と
丸鋸刃１との距離４を十分小さく設定されてい
る。 The present invention will be explained in detail based on illustrated embodiments. The circular saw blade drive motor 2 is formed of a cylindrical DC motor, and is built in one side of the synthetic resin housing 3. A power supply unit 4 for driving the motor is disposed around the side of the motor 2. As shown in FIG. 7, the power supply unit 4 has dry batteries 8 arranged in an L-shape surrounding the motor 2 on one circumference centered around the rotating shaft 13 of the motor 2. However, if the dry battery 8 is shaped to surround the motor 2 on one circumference centered on the rotating shaft 13 of the motor 2, the 8th
They may be arranged in a letter shape, letter shape, U shape, or ring shape as shown in Figures to Figure 13, or the first
As shown in FIG. 4, it may be arranged so as to overlap one side of the motor 2. By the way, this power supply section 4 is constituted by the dry battery 8 as mentioned above, and the first
It may be constructed by a rechargeable battery 9 and a power transformer 10 for charging the battery 9, as shown in FIGS. 5a and 5b. On the other hand, the power supply unit 4 is housed in a synthetic resin power supply case 11 made of an L-shaped elongated member as shown in FIG. 16, and this power supply case 11 is attached to one end of the housing 3 as shown in FIG. It is attached removably. A handle 5 integrally molded with the housing 3 has a substantially U-shape and projects above the motor 2. The handle 5 protrudes from the outer circumferential surface of the housing 3 in a plane that is substantially orthogonal to the rotation axis of the circular saw blade 1 and includes the center of gravity of the device. 4 is disposed around the side of the motor 2, the distance 4 between the handle 5 and the circular saw blade 1 is set sufficiently small.
しかして、ハンドル５に取設されたスイツチ１
２を投入してモータ２を電源部４に接続すればモ
ータ２の回転軸１３に接続されたピニオン１４が
ギヤボツクス１５内の減速歯車２８を駆動し、ギ
ヤボツクス１５内に軸支された駆動軸１６を回転
駆動する。そして、駆動軸１６の一端に取設され
た丸鋸刃１が回転し、丸鋸刃１の刃先を試料に押
付けることにより試料が切断される。尚、第４図
乃至第７図中１７は金属製の固定安全カバーであ
り、１８は可動安全カバーであつて、この可動安
全カバー１８は切断時に試料に当り第５図中矢印
Ａのように押上げられ、通常はばね力により図の
位置に保持される。１９はベースであり、切断時
に試料の上を滑り、装置の振れを防いで安全性を
高めるものである。また、このベース１９の上下
位置を選択することにより、切断角度、切込み深
さ等を設定する。２０は丸鋸刃１を駆動軸１６に
圧接するフランジ、２１はベアリングである。さ
らに、第１６図中２２は電源ケース１１の一側面
に一体成型されたすべり止であり、２３は同様に
成型されたアンダーカツトであつて、装置に電源
ケース１１を装着した時不用意に抜け落るのを防
止している。 However, the switch 1 attached to the handle 5
2 and connects the motor 2 to the power supply section 4, the pinion 14 connected to the rotating shaft 13 of the motor 2 drives the reduction gear 28 in the gearbox 15, and the drive shaft 16 pivotally supported in the gearbox 15. drive the rotation. Then, the circular saw blade 1 attached to one end of the drive shaft 16 rotates, and the sample is cut by pressing the cutting edge of the circular saw blade 1 against the sample. In addition, 17 in FIGS. 4 to 7 is a metal fixed safety cover, and 18 is a movable safety cover, and this movable safety cover 18 hits the sample during cutting, as shown by arrow A in FIG. It is pushed up and usually held in the position shown by a spring force. Reference numeral 19 denotes a base, which slides over the sample during cutting to prevent the device from shaking and improve safety. Further, by selecting the vertical position of this base 19, the cutting angle, cutting depth, etc. are set. 20 is a flange that presses the circular saw blade 1 against the drive shaft 16, and 21 is a bearing. Furthermore, in FIG. 16, 22 is a non-slip plate integrally molded on one side of the power supply case 11, and 23 is a similarly molded undercut, which can be prevented from accidentally coming off when the power supply case 11 is attached to the device. Prevents it from falling.
尚、第１７図、第１８図のように電源トランス
２４を内蔵した充電用アダプター２５を設け、こ
のアダプター２５の上面に電源ケース１１が着脱
自在のＬ字状開口２６を形成して、充電可能な電
池を収納した電源ケース１１をアダプター２５に
装着することにより、上記電池を充電するように
している。電源トランス２４は、電源ケース１１
が装置に収納されたときモータ２に対応する位置
に配設されており、比較的大きな電源トランス２
４を収まり良く収納することができる。図中、２
７は接続用栓刃である。 As shown in FIGS. 17 and 18, a charging adapter 25 with a built-in power transformer 24 is provided, and an L-shaped opening 26 is formed on the top surface of the adapter 25 to which the power case 11 can be attached and detached, allowing charging. By attaching the power supply case 11 containing a battery to the adapter 25, the battery is charged. The power transformer 24 is connected to the power supply case 11
is placed in a position corresponding to the motor 2 when it is housed in the device, and a relatively large power transformer 2
4 can be stored comfortably. In the figure, 2
7 is a connecting plug blade.
本発明は上述のように、丸鋸刃の回転軸と略直
交し装置の重心を含む面内でハウジングの外周面
にハンドルが突設され、ハウジング内に丸鋸刃駆
動用の円柱状のモータと、モータの側周でモータ
と同心円周上に配設されたモータ駆動用の電源部
とが内蔵されているので、丸鋸刃の軸方向におい
て装置の重心を丸鋸刃に近付けることができるも
のであり、丸鋸刃とハンドルとの距離を小さく設
定でき、丸鋸刃の軸方向において装置の巾を小さ
くできるのである。その結果、丸鋸刃で試料を切
断する際にハンドルの回りに生じるモーメントを
従来よりも小さくすることができるのであり、ハ
ンドルを手で持つて試料を切断する丸鋸装置にお
いて、丸鋸刃が左右に振れることがなくなり、真
つ直ぐに試料を切断できるという利点を有するも
のである。また、ハンドルの回りに生じるモーメ
ントが小さく、思料が真つ直ぐに切断できるか
ら、丸鋸刃の側面から試料に作用する力が小さく
なるものであり、丸鋸刃と試料との間の摩擦力が
小さくなる結果、切断時に発生する騒音が小さく
なり、かつ電池の寿命が長くなる利点がある。さ
らに、丸鋸刃の軸方向において装置の巾が小さく
なるものであるから、丸鋸刃の軸方向における巾
が比較的狭い試料を切断する場合であつても試料
を押さえる手に装置が接触しないものであり、巾
の狭い試料を容易に切断できるという利点を有す
るものである。また、ハンドルが丸鋸刃の回転軸
に直交し重心を含む面内に突設されているので、
ハンドルを持つたときに、丸鋸刃の回転軸が略水
平になるのであり、切断時に丸鋸刃を試料の切断
位置に位置合わせするのが容易となり、使い勝手
がよいという利点を有するのである。 As described above, the present invention includes a handle projecting from the outer peripheral surface of the housing in a plane that is substantially orthogonal to the rotation axis of the circular saw blade and including the center of gravity of the device, and a cylindrical motor for driving the circular saw blade inside the housing. It has a built-in power supply for driving the motor, which is located on the side of the motor and concentrically with the motor, so the center of gravity of the device can be moved closer to the circular saw blade in the axial direction of the circular saw blade. Therefore, the distance between the circular saw blade and the handle can be set small, and the width of the device can be reduced in the axial direction of the circular saw blade. As a result, the moment generated around the handle when cutting a sample with a circular saw blade can be made smaller than before. This has the advantage of eliminating side-to-side swinging and allowing the sample to be cut straight. In addition, since the moment generated around the handle is small and the material can be cut straight, the force acting on the sample from the side of the circular saw blade is reduced, and the frictional force between the circular saw blade and the sample is reduced. As a result of the smaller size, the noise generated during cutting is reduced and the battery life is extended. Furthermore, since the width of the device becomes smaller in the axial direction of the circular saw blade, even when cutting a sample whose width in the axial direction of the circular saw blade is relatively narrow, the device does not come into contact with the hand holding the sample. It has the advantage of being able to easily cut narrow samples. In addition, since the handle is perpendicular to the rotation axis of the circular saw blade and protrudes in a plane that includes the center of gravity,
When the handle is held, the axis of rotation of the circular saw blade is approximately horizontal, making it easy to align the circular saw blade to the cutting position of the sample during cutting, which has the advantage of ease of use.
第１図は従来例の断面図、第２図は同上の使用
状態を示す概略正面図、第３図は同上の概略平面
図、第４図は本発明一実施例の断面図、第５図は
同上の正面図、第６図は同上の斜視図、第７図は
同上の切欠背面図、第８図乃至第１４図は夫々同
上の別の実施例の概略正面図、第１５図ａ，ｂは
夫々同上の更に別の実施例の概略正面図、第１６
図は同上の一実施例の要部拡大斜視図、第１７
図、第１８図は夫々同上の一応用例の切欠正面
図、平面図であつて、１は丸鋸刃、２はモータ、
３はハウジング、４は電源部である。
Fig. 1 is a sectional view of the conventional example, Fig. 2 is a schematic front view showing the above in use, Fig. 3 is a schematic plan view of the same, Fig. 4 is a sectional view of an embodiment of the present invention, and Fig. 5. is a front view of the same as above, FIG. 6 is a perspective view of same as above, FIG. 7 is a cutaway rear view of same as above, FIGS. 8 to 14 are schematic front views of another embodiment of same as above, b is a schematic front view of still another embodiment of the same as above, No. 16
The figure is an enlarged perspective view of the main part of one embodiment same as above, No. 17
18 are a cutaway front view and a plan view of one application example of the same, respectively, in which 1 is a circular saw blade, 2 is a motor,
3 is a housing, and 4 is a power supply section.
Claims (1)
面内でハウジングの外周面にハンドルが突設さ
れ、ハウジング内に丸鋸刃駆動用の円柱状のモー
タと、モータの側周でモータと同心円周上に配設
されたモータ駆動用の電源部とが内蔵されて成る
ことを特徴とする携帯用丸鋸装置。 ２ 電源部を電池と電池充電用電源トランスとで
構成して成ることを特徴とする特許請求の範囲第
１項記載の携帯用丸鋸装置。 ３ 電源部を電源ケースに収納すると共にこの電
源ケースをハウジングに着脱自在に装着して成る
ことを特徴とする特許請求の範囲第１項又は第２
項記載の携帯用丸鋸装置。[Scope of Claims] 1. A handle is provided protruding from the outer peripheral surface of the housing in a plane that is substantially orthogonal to the rotation axis of the circular saw blade and includes the center of gravity of the device, and a cylindrical motor for driving the circular saw blade and a cylindrical motor for driving the circular saw blade are provided inside the housing. , a portable circular saw device comprising a built-in power supply section for driving the motor, which is disposed on a circumference concentric with the motor on the side circumference of the motor. 2. The portable circular saw device according to claim 1, wherein the power supply section is composed of a battery and a power transformer for charging the battery. 3. Claim 1 or 2, characterized in that the power supply section is housed in a power supply case, and the power supply case is detachably attached to the housing.
Portable circular saw device as described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9272981A JPS57207001A (en) | 1981-06-15 | 1981-06-15 | Portable circular saw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9272981A JPS57207001A (en) | 1981-06-15 | 1981-06-15 | Portable circular saw device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57207001A JPS57207001A (en) | 1982-12-18 |
| JPS6153922B2 true JPS6153922B2 (en) | 1986-11-20 |
Family
ID=14062508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9272981A Granted JPS57207001A (en) | 1981-06-15 | 1981-06-15 | Portable circular saw device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57207001A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140001A (en) * | 1983-01-31 | 1984-08-11 | 松下電工株式会社 | Battery type circular saw |
| US7581323B2 (en) * | 2002-09-17 | 2009-09-01 | Credo Technology Corporation | Cordless circular saw |
| JP2012176468A (en) * | 2011-02-28 | 2012-09-13 | Makita Corp | Cutting tool |
| JP6084474B2 (en) * | 2013-02-01 | 2017-02-22 | 株式会社マキタ | Rechargeable cutting tool |
| JP5986007B2 (en) * | 2013-02-01 | 2016-09-06 | 株式会社マキタ | Handheld electric cutting machine |
| JP6100004B2 (en) | 2013-02-01 | 2017-03-22 | 株式会社マキタ | Tabletop cutting machine |
| JP6370935B2 (en) * | 2017-01-19 | 2018-08-08 | 株式会社マキタ | Rechargeable cutting tool |
| JP6317001B2 (en) * | 2017-02-21 | 2018-04-25 | 株式会社マキタ | Tabletop cutting machine |
| JP2018001407A (en) * | 2017-10-11 | 2018-01-11 | 株式会社マキタ | Hand-held electric cutter |
| JP6615851B2 (en) * | 2017-11-30 | 2019-12-04 | 株式会社マキタ | Tabletop cutting machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3204470A (en) * | 1960-04-04 | 1965-09-07 | Black & Decker Mfg Co | Arcuate motion jig saw |
| JPS5516381U (en) * | 1978-07-20 | 1980-02-01 |
-
1981
- 1981-06-15 JP JP9272981A patent/JPS57207001A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3204470A (en) * | 1960-04-04 | 1965-09-07 | Black & Decker Mfg Co | Arcuate motion jig saw |
| JPS5516381U (en) * | 1978-07-20 | 1980-02-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57207001A (en) | 1982-12-18 |
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