WO2021242003A1 - Structure de coupleur de meuleuse à main - Google Patents

Structure de coupleur de meuleuse à main Download PDF

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Publication number
WO2021242003A1
WO2021242003A1 PCT/KR2021/006541 KR2021006541W WO2021242003A1 WO 2021242003 A1 WO2021242003 A1 WO 2021242003A1 KR 2021006541 W KR2021006541 W KR 2021006541W WO 2021242003 A1 WO2021242003 A1 WO 2021242003A1
Authority
WO
WIPO (PCT)
Prior art keywords
disk
fastening piece
housing
grinder
outer periphery
Prior art date
Application number
PCT/KR2021/006541
Other languages
English (en)
Korean (ko)
Inventor
권순철
Original Assignee
주식회사 이엠케이
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 주식회사 이엠케이 filed Critical 주식회사 이엠케이
Priority to CN202180002697.4A priority Critical patent/CN114051439A/zh
Priority to US17/601,815 priority patent/US20230076278A1/en
Publication of WO2021242003A1 publication Critical patent/WO2021242003A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—Accessories therefor

Definitions

  • the present invention is a hand grinder that is bound to the rotating shaft of the grinder body and is configured to allow simple and quick attachment and detachment of a processing disk used for purposes such as finishing, cutting, or cutting the surface of a work object. It is about the coupler structure of grinder).
  • hand grinders are used for purposes such as smoothing rough surfaces of processed parts or parts to be painted, or partially cutting raw materials such as pipes, angles, and iron plates. That is, the hand grinder operates a rotating shaft at high speed by air pressure generated by driving an electric motor or operating a compressor and at the same time grinding the surface of an object using a consumable disk, so that processing is less Grinding or cutting the cut parts, corners, etc. is performed.
  • the disk since a grindstone or sandpaper is attached together with the surface to be easily consumed, it must be replaced from time to time while having a large amount of disks.
  • the present invention is to solve the conventional problems as described above, and an object of the present invention is to manufacture a coupler mounted on the rotation shaft of the grinder body in a simple structure so that the disk can be easily attached and detached in a one-touch method, thereby reducing the cost.
  • the present invention for achieving this object includes a housing 70 that is detachably attached to a rotating shaft mounted on one end of the grinder body, and upper and lower fastening pieces 80A that are fitted and fixed to the outer circumferential surface of the housing, respectively; 80B), and a spring 90 interposed between the upper and lower fastening pieces to impart elasticity, and the housing 70 has an inner diameter portion 71 fitted and fixed to the rotation shaft of the grinder body through and cylindrical Four protrusions 73 having respective locking protrusions 72a around the outer periphery of the body are vertically elongated at opposing positions, and at the same time, male threaded portions 74 on the outer periphery of the body located at the lower tip of the protrusions.
  • the upper fastening piece 80A has four grooves 82 formed outward from the central through-hole 81a, and is fitted and assembled into the four protrusions 73 of the housing 70, respectively
  • a rim portion 83a is formed on the outer periphery
  • a female screw portion 85a is fastened to the male screw portion 74 of the housing 70 in the disk-shaped body 84 constituting the lower fastening piece 80B.
  • a flange 85b having a protrusion is formed, and the spring 90 includes an outer peripheral edge portion 83a formed on the outer edge of the upper fastening piece 80A and a disk-shaped body 84 of the lower fastening piece 80B. ) can be configured to be accommodated between the outer periphery of the flange (85b) formed in.
  • the present invention can greatly reduce the manufacturing cost by simply configuring the interlocking parts of the coupler mounted on the rotary shaft of the hand grinder by the above-described features, and can easily remove the consumable disk from the coupler in a one-touch method, Since it is attached, it is possible to quickly perform replacement work at the time of work and greatly improve efficiency.
  • FIG. 1 is a perspective view showing the components of a hand grinder disclosed in Korean Patent Registration No. 10-0973157 separated;
  • 3 and 4 are a cross-sectional configuration view of the disk holder and a bottom view of part "A";
  • FIG. 6 and 7 are cross-sectional views showing an assembled state of each part of FIG. 5;
  • FIGS 8 and 9 are plan configuration diagrams for explaining the operational relationship between the stopper and the safety pin constituting the power linkage unit
  • 10 and 11 are a plan view and a bottom view of a housing constituting a power linkage unit
  • FIG. 12 is an exploded perspective view illustrating the coupler structure of the hand grinder according to the present invention.
  • FIG. 13 is a perspective view showing the components of the coupler separated
  • 16 and 17 are a plan view and a cross-sectional view of the upper fastening piece
  • 20 is a cross-sectional configuration view of a state mounted on the grinder body.
  • the hand grinder includes a conventional grinder body 10 and a power linkage unit 20 and a disk holder 30 on which the disk D is integrally mounted.
  • a rotating shaft 11 having a screw hole 11a is provided at one end of the grinder body 10 to rotate at high speed by driving an electric motor or by air pressure of a compressor, and on the rotating shaft 11, a power linkage unit 20 and a disk holder 30 are mounted thereon.
  • a plurality of grooves 32 are formed at regular intervals, and three protrusions 33 are formed between these grooves 32, so that the power linkage unit 20 ), so that it can be installed or removed.
  • the power linkage unit 20 includes a stopper 40 and a housing 50 that rotates forward and reverse on the stopper 40, and a cylindrical binding member 60 is mounted in the central portion of the housing 50 and a fixing bolt ( As 12), it is fastened to the rotation shaft 11 of the grinder body 10 .
  • the housing 50 functions to lock or unlock the disk holder 30 by operating the safety key 46 on the stopper 40 in the horizontal direction, and the through-hole of the flange 51 and the stopper 40 ( 41) and is composed of a body 52 that is fitted.
  • a positioning line 51a is formed, and at the same time a rectangular guide groove 53 opposite to each other is formed on the bottom surface of the flange 51, and the square pole 45b at the top of the safety key 46 is fitted.
  • An insertion groove 54 is formed in the body 52 at the lower end of the flange 51, and the housing 50 assembled with the through hole 41 of the stopper 40 can be bound by the fixing ring 55, and the flange (
  • the ball plungers 56 are provided on both sides of the upper surface of the 51 , and the housing 50 is configured to rotate closely on the stopper 40 .
  • the ball plunger 56 is constructed by inserting a steel ball 57 and a spring 58 into the insertion holes 51b formed on both sides of the upper surface of the flange 51 and then fastening them with a fixing screw 59, the housing ( 50), it is possible to elastically fit into or out of the concave holes 43a and 43b formed in the stopper 40 during the forward and reverse rotation.
  • a step 61 is formed in the binding member 60 that is assembled with the seating hole 51c formed in the central portion of the housing 50 and is coupled to the rotation shaft 11 of the grinder body 10 at the same time.
  • the protruding piece 33 of the disk holder 30 is formed on the upper side of the step 61, as three locking projections 62 (each of which is composed of a horizontal portion and a vertical portion extending downward from one end of the horizontal portion) are formed. ) is inserted so that it can be fixed or detached.
  • the disk holder 30 can be easily detached and attached to the rotation shaft of the grinder body 10 , but a separate stopper 40 or housing constituting the power linkage unit 20 . (50) or the safety key 46, the steel ball 57 constituting the ball plunger 56, the spring 58, the fixing screw 59, etc. are a factor that increases the manufacturing cost because of the complex installation structure This puts a considerable burden on the work site that uses a large amount of consumables. In addition, there is a risk that the operation of the safety key may deteriorate due to foreign substances such as fine particles generated during grinding or cutting using a hand grinder, which may cause malfunctions.
  • the coupler (K) detachable on the rotation shaft 11 of the hand grinder includes a housing 70 and upper and lower fastening pieces ( 80A and 80B, and a spring 90 interposed between the upper and lower fastening pieces 80A and 80B to impart elasticity.
  • the housing 70 has an inner diameter portion 71 having a thread to be screw-fitted to the rotation shaft 11 of the grinder body 10, and the cylindrical body at the upper end has four protrusions 73 formed with engaging protrusions 72a. ) is formed, and the external threaded portion 74 of the lower end is formed.
  • the upper fastening piece 80A has four grooves 82 into which the protrusion 73 of the housing 70 is fitted to the outside of the through hole 81a, and at the same time, an outer peripheral edge portion 83a is formed on the outer edge thereof. is formed to protrude, and the lower fastening piece 80B has a flange 85b having a female screw portion 85a protruding from the center of the disk-shaped body 84 so as to be fastened to the male screw portion 74 of the housing 70. .
  • the disk 100 is a consumable item that is disposed of when its life has expired due to long-term use, and includes a disk-shaped processing unit 101 for grinding or cutting a work object and binding the processing unit 101 . It is provided with a holder portion 102 for, and as the protruding pieces 103 are formed on the inside of the holder portion 102, it is possible to detach and attach to the housing 70.
  • the inner diameter portion 71 of the housing 70 constituting the coupler K to the rotation shaft 11 of the grinder body 10 can be fixed by screw fitting, and in this state, the disk 100
  • the upper fastening piece 80A is pressed downward while receiving elasticity by the spring 90 interposed between it and the lower fastening piece 80B, and then restored again while firmly maintaining the disk 100. .
  • the rotation shaft 11 of the grinder body 10 is operated at high speed by the air pressure generated by the electric motor driving or the operation of the compressor, and at the same time, the processing of the object is reduced due to the high-speed rotation of the disk 100. It can grind parts, edges, etc., or perform operations such as cutting.
  • the disk 100 is to be replaced, by slightly rotating the disk 100 in the opposite direction while pressing the disk 100, the disk 100 is removed from each of the locking jaws 72a formed on the protrusions 73 of the housing 70 . is released and can be easily removed.
  • the spring 90 it is sufficiently possible to replace it with silicone or other materials having elasticity.
  • an elastic member formed in a cylindrical shape by an elastic material such as rubber may be applied.
  • the manufacturing cost can be greatly reduced by simply configuring the interlocking parts of the coupler mounted on the rotation shaft of the grinder body, and the consumable disk is attached to the coupler in a one-touch method. Because it is made to be easily detached and attached with the help of this, it is possible to quickly perform replacement work during work and greatly improve the efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

La présente invention concerne une structure de coupleur de meuleuse à main qui permet de fixer/détacher plus simplement et rapidement un disque d'usinage couplé à un arbre rotatif d'un corps principal de meuleuse de façon à être utilisé pour polir la surface d'un objet à usiner, ébavurer, couper ou effectuer d'autres actions similaires. La présente invention simplifie un composant de liaison d'un coupleur monté sur l'arbre rotatif du corps principal de meuleuse, de sorte que les coûts de fabrication puissent être réduits considérablement, et permet de fixer ou de détacher facilement le disque consommable du coupleur avec un seul contact, ce qui permet de réaliser rapidement une opération de remplacement pendant l'usinage, et ainsi d'améliorer considérablement l'efficacité.
PCT/KR2021/006541 2020-05-27 2021-05-26 Structure de coupleur de meuleuse à main WO2021242003A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180002697.4A CN114051439A (zh) 2020-05-27 2021-05-26 手摇砂轮的连接结构
US17/601,815 US20230076278A1 (en) 2020-05-27 2021-05-26 Coupler structure of hand grinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20-2020-0001783 2020-05-27
KR2020200001783U KR200493410Y1 (ko) 2020-05-27 2020-05-27 핸드 그라인더의 커플러 구조

Publications (1)

Publication Number Publication Date
WO2021242003A1 true WO2021242003A1 (fr) 2021-12-02

Family

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Application Number Title Priority Date Filing Date
PCT/KR2021/006541 WO2021242003A1 (fr) 2020-05-27 2021-05-26 Structure de coupleur de meuleuse à main

Country Status (4)

Country Link
US (1) US20230076278A1 (fr)
KR (1) KR200493410Y1 (fr)
CN (1) CN114051439A (fr)
WO (1) WO2021242003A1 (fr)

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* Cited by examiner, † Cited by third party
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JP4801986B2 (ja) * 2005-02-03 2011-10-26 株式会社東芝 半導体記憶装置
KR200493410Y1 (ko) * 2020-05-27 2021-03-26 권순철 핸드 그라인더의 커플러 구조
CN113414657A (zh) * 2021-06-17 2021-09-21 天津康富斯科技股份有限公司 一种地坪研磨抛光一体机
KR102656272B1 (ko) * 2022-04-14 2024-04-08 이상문 원터치로 탈장착되는 디스크형 그라인더
KR20230151369A (ko) 2022-04-25 2023-11-01 주식회사 이엠케이 에어 그라인더의 커플러 구조

Citations (6)

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JPH1170475A (ja) * 1996-02-01 1999-03-16 Yanase Kk 回転研磨具
US20040258497A1 (en) * 2002-06-10 2004-12-23 Harald Krondorfer Tool holding fixture and insert tool
KR20180137700A (ko) * 2017-06-19 2018-12-28 박근식 그라인더 휠 고정모듈 및 그라인더 휠 고정방법
KR20190054294A (ko) * 2017-11-13 2019-05-22 주식회사 미래텍 회전장치
KR20200048046A (ko) * 2018-10-29 2020-05-08 권정자 핸드 그라인더용 그라인더 날 고정장치
KR200493410Y1 (ko) * 2020-05-27 2021-03-26 권순철 핸드 그라인더의 커플러 구조

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1170475A (ja) * 1996-02-01 1999-03-16 Yanase Kk 回転研磨具
US20040258497A1 (en) * 2002-06-10 2004-12-23 Harald Krondorfer Tool holding fixture and insert tool
KR20180137700A (ko) * 2017-06-19 2018-12-28 박근식 그라인더 휠 고정모듈 및 그라인더 휠 고정방법
KR20190054294A (ko) * 2017-11-13 2019-05-22 주식회사 미래텍 회전장치
KR20200048046A (ko) * 2018-10-29 2020-05-08 권정자 핸드 그라인더용 그라인더 날 고정장치
KR200493410Y1 (ko) * 2020-05-27 2021-03-26 권순철 핸드 그라인더의 커플러 구조

Also Published As

Publication number Publication date
KR200493410Y1 (ko) 2021-03-26
CN114051439A (zh) 2022-02-15
US20230076278A1 (en) 2023-03-09

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