JPH06328363A - Wheel guard holding mechanism for portable disc grinder - Google Patents

Wheel guard holding mechanism for portable disc grinder

Info

Publication number
JPH06328363A
JPH06328363A JP11961393A JP11961393A JPH06328363A JP H06328363 A JPH06328363 A JP H06328363A JP 11961393 A JP11961393 A JP 11961393A JP 11961393 A JP11961393 A JP 11961393A JP H06328363 A JPH06328363 A JP H06328363A
Authority
JP
Japan
Prior art keywords
wheel guard
guard
holding mechanism
wheel
knob
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.)
Withdrawn
Application number
JP11961393A
Other languages
Japanese (ja)
Inventor
Chien Kia Chiyowa
チェン キア チョワ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki Co Ltd
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 Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP11961393A priority Critical patent/JPH06328363A/en
Publication of JPH06328363A publication Critical patent/JPH06328363A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

PURPOSE:To provide a compact wheel guard mechanism by providing a preventing means for slipping out of a set ring to hold the wheel guard attaching part of a main body, and composing each component of small parts. CONSTITUTION:The outer periphery of a wheel guard attaching part 5 is provided with recesses 5A, and a set ring 2 has a passing through groove 2B, and the tip of a lug 6 passes through the passing through groove 2B and protrudes axially, and is arrangedly provided so as to engage with the recess of the attaching part. The pressing and releasing motions of the lug 6 are carried out to make the set ring 2 engage with the attaching part 5 and release from it.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、携帯用ディスクグライ
ンダのように先端工具をカバーするホイルガードを有す
る工具のホイルガード保持機構に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel guard holding mechanism for a tool such as a portable disc grinder having a wheel guard for covering a tip tool.

【0002】[0002]

【従来の技術】従来の機構は、特開昭63−12008
1号公報に記載された構造等があり、この構造を図5及
び図6を用いて説明する。従来技術によれば、ガードカ
バ11の締付バンド12の両周端に相対して折り曲げ部
12aを設け、該折り曲げ部12aに対し垂直方向に締
付ねじ13を貫通させ、該締付ねじ13とねじ嵌合し、
且つホイルガードのクランプ操作を行なう偏心輪レバー
14の支点となるピンナット15を偏心輪レバー14の
内側に配設すると共に、偏心輪レバー14の偏心カム部
14aと接合し、且つ偏心輪レバー14の動作を案内す
るガイドピース16を前記締付バンド12と一体化した
構造になっている。偏心輪レバー14を解放すると(図
5中の一点鎖線で示す)偏心カム部14aの作用により
締付バンド12の径寸法が広がり、ディスクグラインダ
本体のホイルガード取付軸上で回転可能となり、一方偏
心輪レバー14を閉じると締付バンド12が締まり、前
記ホイルガード取付軸上に緊締される構造となってい
る。締付ねじ13は、締付具合を調整することにより締
付バンド12の緊締力が調整される構造になっている。
2. Description of the Related Art A conventional mechanism is disclosed in Japanese Patent Laid-Open No. 63-122008.
There is a structure described in Japanese Patent Publication No. 1 and the like, and this structure will be described with reference to FIGS. According to the prior art, a bent portion 12a is provided opposite to both circumferential ends of the tightening band 12 of the guard cover 11, and the tightening screw 13 is passed through the bent portion 12a in a direction perpendicular to the bent portion 12a. Screw mating,
In addition, the pin nut 15, which serves as a fulcrum of the eccentric wheel lever 14 for performing the clamp operation of the wheel guard, is arranged inside the eccentric wheel lever 14, and is joined to the eccentric cam portion 14a of the eccentric wheel lever 14 and the eccentric wheel lever 14 The guide piece 16 for guiding the operation is integrated with the tightening band 12. When the eccentric wheel lever 14 is released (indicated by the one-dot chain line in FIG. 5), the diametrical size of the tightening band 12 expands due to the action of the eccentric cam portion 14a, and it becomes rotatable on the wheel guard mounting shaft of the disc grinder main body. When the wheel lever 14 is closed, the tightening band 12 is tightened and tightened on the wheel guard mounting shaft. The tightening screw 13 has a structure in which the tightening force of the tightening band 12 is adjusted by adjusting the tightening condition.

【0003】[0003]

【発明が解決しようとする課題】従来のホイルガードの
クランプ機構は、締付バンドの緊締力を調整する締付ね
じ、該締付ねじとねじ嵌合するピンナット、そして偏心
輪レバーの案内をするガイドピース等の部品が大きいた
め、偏心輪レバーの操作に大きな力を必要とし操作性が
悪いという問題があった。本発明の目的は操作性がよ
い、且つコンパクトなホイルガード保持機構を提供する
ことにある。
A conventional wheel guard clamp mechanism guides a tightening screw for adjusting the tightening force of a tightening band, a pin nut screw-fitted with the tightening screw, and an eccentric wheel lever. Since the parts such as the guide piece are large, there is a problem that a large force is required to operate the eccentric wheel lever and the operability is poor. An object of the present invention is to provide a wheel guard holding mechanism that is easy to operate and compact.

【0004】[0004]

【課題を解決するための手段】上記目的はホイルガード
の着脱及びガードカバの角度変更を行なう際、操作性が
よく、且つコンパクトなホイルガードとするためホイル
ガード取付部に凹部を設け、該凹部と係合可能なつまみ
を設けることにより達成される。
SUMMARY OF THE INVENTION The above object is to provide a recess in the wheel guard mounting portion in order to provide a compact wheel guard with good operability when attaching and detaching the wheel guard and changing the angle of the guard cover. This is achieved by providing an engageable knob.

【0005】[0005]

【作用】上記のよう構成されたホイルガード保持機構に
おいて、ホイルガードの取付部に凹部を設け、該凹部は
つまみの先端部と係合するためにバネの力を利用し、該
バネの働きによりつまみの先端部は取付部との係合及び
解放させることができる
In the wheel guard holding mechanism configured as described above, a recess is provided in the mounting portion of the wheel guard, and the recess uses the force of the spring to engage with the tip of the knob. The tip of the knob can be engaged with and disengaged from the attachment.

【0006】。[0006]

【実施例】本発明による携帯用ディスクグラインダのホ
イルガードは図1ないし図4に示すように、先端工具7
の略半分を覆うガードカバ1、ガードカバ1の中心部に
固着されたセットリング2、セットリング2の外周に固
着された円筒形状のリング3、リング3に内蔵するバネ
4によって、ホイルガード取付部5の中心軸に押圧され
たつまみ6により構成されている。ガードカバ1は、中
心部にセットリング2を有し、その内径寸法はホイルガ
ード取付部5と遊合状態になるよう形成されている。該
セットリング2の内径部に凸部2Aが設けられており、
ホイルガード5の外周部に形成された凹部5Bと係合関
係にあり回動自在で、且つ通常ホイルガードをセットす
る位置ではガードカバ1が下方に脱落しないように寸法
決定されている。即ち、ホイルガードが使用できない位
置まで回転させないとホイルガード取付部5から外すこ
とができないようにしている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A wheel guard for a portable disc grinder according to the present invention has a tip tool 7 as shown in FIGS.
Of the wheel guard mounting portion 5 by means of the guard cover 1 covering approximately half of the The knob 6 is pressed against the central axis of the. The guard cover 1 has a set ring 2 in the center thereof, and the inner diameter of the guard cover 1 is formed so as to be in a loose fit with the wheel guard mounting portion 5. A convex portion 2A is provided on the inner diameter of the set ring 2,
It is engaged with the recess 5B formed on the outer peripheral portion of the wheel guard 5 and is rotatable, and is dimensioned so that the guard cover 1 does not drop downward at the position where the wheel guard is normally set. That is, the wheel guard cannot be detached from the wheel guard mounting portion 5 unless it is rotated to a position where the wheel guard cannot be used.

【0007】前記セットリング2の外周面にはほぼ円形
の貫通溝2Bが形成されている。該貫通溝2Bの軸中心
位置と一致する軸心上に円筒形状のリング3を固着して
いる。該円筒3をセットリング2の外周で固着するため
に、フランジ部3Aを設ける。該円筒リング3の外周部
は図4(A)と図4(B)のような保持溝3Bと解放溝
3Cが設けられており、該ホイルガード取付部5の外周
部には図1のように8か所で凹部5Aを設け、該凹部5
Aはつまみ6の先端部と係合するように設けており、該
つまみ6はバネ4を押圧できるために図1に示すような
2段形状にしてある。該つまみ6外周のほぼ中間の部分
にピン6Aを圧入することにより、該ピン6Aは常に円
筒リング3の溝部の中に保持される。該つまみ6の先端
部はホイルガードの取付部5の凹部5Aと係合する状態
の際、ピン6Aは図4(B)のように円筒リング3の保
持溝3Bと係合し、該バネ4の働きにより、ピン6Aは
保持溝3Bから脱落しないようになり、ガードカバ1は
取付部に挟持することができる。ガードカバ1を着脱ま
たは角度を変更したい場合は、該つまみ6は図4(A)
のようにピン6Aを3Bの保持溝から3Cの解放溝まで
移動し、このとき圧縮されたバネ4は自然長度に回復す
る。つまみ6の先端部が反軸方向に後退することにより
セットリング2はホイルガードの取付部と遊合状態にな
り、ガードカバ1は回転自在になる。
A substantially circular through groove 2B is formed on the outer peripheral surface of the set ring 2. A cylindrical ring 3 is fixed on the axial center that coincides with the axial center position of the through groove 2B. In order to fix the cylinder 3 on the outer circumference of the set ring 2, a flange portion 3A is provided. The outer peripheral portion of the cylindrical ring 3 is provided with a holding groove 3B and a release groove 3C as shown in FIGS. 4 (A) and 4 (B), and the outer peripheral portion of the wheel guard mounting portion 5 is as shown in FIG. The recesses 5A are provided at eight locations on the
A is provided so as to engage with the tip end of the knob 6, and the knob 6 has a two-step shape as shown in FIG. 1 so that the spring 4 can be pressed. The pin 6A is always held in the groove portion of the cylindrical ring 3 by press-fitting the pin 6A into a substantially middle portion of the outer circumference of the knob 6. When the tip portion of the knob 6 is engaged with the recess 5A of the mounting portion 5 of the wheel guard, the pin 6A engages with the holding groove 3B of the cylindrical ring 3 as shown in FIG. By this action, the pin 6A is prevented from falling out of the holding groove 3B, and the guard cover 1 can be held by the mounting portion. When it is desired to attach / detach the guard cover 1 or change the angle, the knob 6 is shown in FIG. 4 (A).
As described above, the pin 6A is moved from the holding groove of 3B to the releasing groove of 3C, and at this time, the compressed spring 4 recovers to the natural length. By retracting the tip end of the knob 6 in the opposite axial direction, the set ring 2 is brought into a loose engagement with the mounting portion of the wheel guard, and the guard cover 1 becomes rotatable.

【0008】[0008]

【発明の効果】本発明によれば、ホイルガードの着脱及
びガードカバの角度変更を行なう際、簡単な操作で行な
うことができ、且つセットリング外周の円筒リング部、
バネとつまみなど小さいの部品から構成されるのでコン
パクトなホイルガード保持機構を提供するができる。
According to the present invention, when the wheel guard is attached / detached and the angle of the guard cover is changed, it can be performed by a simple operation, and the cylindrical ring portion on the outer periphery of the set ring is provided.
Since it is composed of small parts such as a spring and a knob, it is possible to provide a compact wheel guard holding mechanism.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明になる携帯用ディスクグラインダのホ
イルガードの一実施例を示す上面断面図である。
FIG. 1 is a top sectional view showing an embodiment of a wheel guard of a portable disc grinder according to the present invention.

【図2】 ホイルガードの一実施例を示す上面断面図で
ある。
FIG. 2 is a top sectional view showing an embodiment of a wheel guard.

【図3】 ホイルガードの取付状態を示す側面一部断面
図である。
FIG. 3 is a partial side cross-sectional view showing a mounted state of a wheel guard.

【図4】 図1のホイルガードの同筒リングの一実施例
を示す側面図である。
FIG. 4 is a side view showing an embodiment of the same tubular ring of the wheel guard of FIG.

【図5】 従来技術の一実施例を示す上面図である。FIG. 5 is a top view showing an example of a conventional technique.

【図6】 図5のA−A線断面図である。6 is a cross-sectional view taken along the line AA of FIG.

【符号の説明】[Explanation of symbols]

1はガードカバ、2はセットリング、3は円筒リング、
4はバネ、5はホイルガード取付部、6はつまみ、7は
ナット、8はネジである。
1 is a guard cover, 2 is a set ring, 3 is a cylindrical ring,
Reference numeral 4 is a spring, 5 is a wheel guard mounting portion, 6 is a knob, 7 is a nut, and 8 is a screw.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 携帯用ディスクグラインダ本体に設けら
れた略円筒状のホイルガード取付部に取付けられるホイ
ルガードにおいて、該ホイルガードは、先端工具の略半
分を覆うガードカバと、該ガードカバに一体に固着さ
れ、且つ前記ホイルガード取付部の外周面形状に沿うセ
ットリングと、該セットリング外周に設けられたつまみ
保持リングとにより構成され、前記セットリングを取付
軸に装着時、まわり止め手段を設けて、前記つまみの先
端部と取付軸凹部の係合を調整する調整手段を設けたこ
とを特徴とする携帯用ディスクグラインダのホイルガー
ド保持機構。
1. A wheel guard attached to a substantially cylindrical wheel guard mounting portion provided on a portable disc grinder main body, wherein the wheel guard is integrally fixed to the guard cover that covers substantially half of the tip tool. And a knob holding ring provided on the outer circumference of the set ring along the outer peripheral surface shape of the wheel guard mounting portion. When the set ring is mounted on the mounting shaft, a detent means is provided. A wheel guard holding mechanism for a portable disk grinder, characterized in that adjustment means is provided for adjusting the engagement between the tip of the knob and the mounting shaft recess.
【請求項2】 前記つまみの先端部は、常にバネの弾性
力により前記取付部の凹部と係合することを特徴とする
請求項1記載の携帯用ディスクグラインダのホイルガー
ド保持機構。
2. The wheel guard holding mechanism for a portable disc grinder according to claim 1, wherein the tip end portion of the knob is always engaged with the recessed portion of the mounting portion by the elastic force of a spring.
【請求項3】 前記ホイルガード取付部のほぼ全周にわ
たり形成した凹部と、該凹部と係合する凸部を前記ホイ
ルガードの内周面に形成したことを特徴とする請求項1
又は請求項2記載の携帯用ディスクグラインダのホイル
ガード保持機構。
3. A recess formed in substantially the entire circumference of the wheel guard mounting portion and a projection engaging with the recess are formed on the inner peripheral surface of the wheel guard.
Alternatively, the wheel guard holding mechanism of the portable disk grinder according to claim 2.
JP11961393A 1993-05-21 1993-05-21 Wheel guard holding mechanism for portable disc grinder Withdrawn JPH06328363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11961393A JPH06328363A (en) 1993-05-21 1993-05-21 Wheel guard holding mechanism for portable disc grinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11961393A JPH06328363A (en) 1993-05-21 1993-05-21 Wheel guard holding mechanism for portable disc grinder

Publications (1)

Publication Number Publication Date
JPH06328363A true JPH06328363A (en) 1994-11-29

Family

ID=14765758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11961393A Withdrawn JPH06328363A (en) 1993-05-21 1993-05-21 Wheel guard holding mechanism for portable disc grinder

Country Status (1)

Country Link
JP (1) JPH06328363A (en)

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20000801