JPH0483515U - - Google Patents

Info

Publication number
JPH0483515U
JPH0483515U JP12837390U JP12837390U JPH0483515U JP H0483515 U JPH0483515 U JP H0483515U JP 12837390 U JP12837390 U JP 12837390U JP 12837390 U JP12837390 U JP 12837390U JP H0483515 U JPH0483515 U JP H0483515U
Authority
JP
Japan
Prior art keywords
core body
engagement
core
mounting
groove
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.)
Granted
Application number
JP12837390U
Other languages
Japanese (ja)
Other versions
JPH0739527Y2 (en
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 filed Critical
Priority to JP1990128373U priority Critical patent/JPH0739527Y2/en
Publication of JPH0483515U publication Critical patent/JPH0483515U/ja
Application granted granted Critical
Publication of JPH0739527Y2 publication Critical patent/JPH0739527Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Drilling Tools (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一部を欠除した要部の正面
図、第２図は同縦断面図、第３図は基体とコア体
とが結合状態にある要部の横断面図、第４図は従
来のコアドリルの分解斜視図、第５図は基体とコ
ア体とが結合状態にある従来のコアドリルの要部
の横断面図である。 １……基体、２……シヤンク、３……コア体取
付け部、４……肩部、５……係合溝、６……コア
体、７……取付け筒部、８……係合突起、９……
穿穴刃部、１０……センタードリル、１１……ド
リル取付け孔、１２……ヒツト用ビス、１３……
収容孔、１４……ボール、１５……ばね。 Fig. 1 is a front view of the main part of this invention with a part removed, Fig. 2 is a longitudinal cross-sectional view of the same, Fig. 3 is a cross-sectional view of the main part in which the base body and core body are connected, and Fig. FIG. 4 is an exploded perspective view of a conventional core drill, and FIG. 5 is a cross-sectional view of a main part of the conventional core drill in which the base body and the core body are in a coupled state. DESCRIPTION OF SYMBOLS 1...Base body, 2...Shank, 3...Core body attachment part, 4...Shoulder part, 5...Engagement groove, 6...Core body, 7...Mounting cylinder part, 8...Engagement protrusion , 9...
Drilling blade part, 10...Center drill, 11...Drill installation hole, 12...Human screw, 13...
Accommodation hole, 14...ball, 15...spring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] シヤンクを有する基体にコア体取付け部を形成
し、該取付け部周面複数個所に、縦溝部に続き横
溝部からなる鈎状の係合溝を凹設し、下端縁に穿
孔刃を設けた筒状のコア体上部に取付け筒部を設
け、該取付け筒部内面に係合突起を突設し、取付
け筒部にコア体取付け部を嵌挿して係合突起を係
合溝に係合させて基体とコア体とを結合するコア
ドリルにおいて、前記コア体取付け部内に、ばね
により付勢して係合溝内に出没して係合突起を係
合終点に保持するボールを配装したことを特徴と
するコアドリル。 A cylinder having a core body attachment part formed on a base body having a shank, hook-shaped engagement grooves consisting of a vertical groove part and a horizontal groove part concavely recessed at multiple places on the circumferential surface of the attachment part, and a perforating blade provided on the lower edge. A mounting cylindrical part is provided on the upper part of the shaped core body, an engaging protrusion is protruded from the inner surface of the mounting cylindrical part, and the core body mounting part is inserted into the mounting cylindrical part so that the engaging protrusion is engaged with the engaging groove. A core drill that connects a base body and a core body, characterized in that a ball is disposed in the core body mounting portion and is biased by a spring to move in and out of the engagement groove to hold the engagement protrusion at the engagement end point. Core drill.
JP1990128373U 1990-11-29 1990-11-29 Core drill Expired - Lifetime JPH0739527Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990128373U JPH0739527Y2 (en) 1990-11-29 1990-11-29 Core drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990128373U JPH0739527Y2 (en) 1990-11-29 1990-11-29 Core drill

Publications (2)

Publication Number Publication Date
JPH0483515U true JPH0483515U (en) 1992-07-21
JPH0739527Y2 JPH0739527Y2 (en) 1995-09-13

Family

ID=31875834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990128373U Expired - Lifetime JPH0739527Y2 (en) 1990-11-29 1990-11-29 Core drill

Country Status (1)

Country Link
JP (1) JPH0739527Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4511661B2 (en) * 2000-01-12 2010-07-28 國雄 安心院 Drilling tool and manufacturing method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218475U (en) * 1975-07-29 1977-02-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218475U (en) * 1975-07-29 1977-02-09

Also Published As

Publication number Publication date
JPH0739527Y2 (en) 1995-09-13

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Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term