CN103862350B

CN103862350B - Angle grinder with push-down stop mechanism

Info

Publication number: CN103862350B
Application number: CN201210532925.1A
Authority: CN
Inventors: 霍立祥; 吴海全
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2012-12-12
Filing date: 2012-12-12
Publication date: 2017-06-27
Anticipated expiration: 2032-12-12
Also published as: CN103862350A

Abstract

The present invention provides a kind of angle grinder with push-down stop mechanism, the push-down stop mechanism includes push rod, latch and elastic component, the push rod is located at the outside of the gear box cover, its one end is the rotating shaft end of the bottom that angle grinder gear box cover can be rotationally connected with along horizontal plane, and its other end is for pulling the free end that the push rod is rotated；The latch is fixedly connected on the push rod, and it can be arranged on the side wall of the gear box cover radially movablely；The position that the outside of the gear along the circumferential direction corresponds to the latch is provided with least two grooves, and the latch is moved radially inward can be entered in the groove；The elastic component is connected between the push rod and the gear box cover.Compared to prior art, technical scheme makes the operation of handling grinding wheel simpler and laborsaving, it is also possible to reduce the size of head capsule.

Description

Angle grinder with push-down stop mechanism

Technical field

The present invention relates to a kind of electric tool for being ground, cutting or polish, there is push-down more particularly, to one kind The angle grinder of stop mechanism.

Background technology

Angle grinder is a kind of conventional electric tool, and its main operational principle is to utilize to be fixed on output shaft and with output The grinding wheel of rotation is ground, is polished, polish etc. and processed axle to material at a high speed.Because the grinding wheel of angle grinder is easy to wear, need Often to change grinding wheel., it is necessary to fix angle grinder fuselage when changing grinding wheel, and output shaft braking is blocked with spanner, then Spanner removes the fastener of fixed emery wheel piece with another simultaneously, Renewal process is bothered very much, and efficiency is also very low.

Chinese utility model patent CN201239909Y discloses a kind of work head of angle grinder, and it includes head capsule, head capsule On PBU pushbutton unit, loaded on the output shaft on head capsule, drive output shaft gear, loaded on the grinding wheel on output shaft, it is described PBU pushbutton unit includes a button, and compression spring is housed between button and head capsule, and latch one end is fixed by the through hole on head capsule In on button, the latch other end is then blocked by head capsule, and at least two position-arresting holes are along the circumferential direction provided with described gear.Should By the PBU pushbutton unit that is arranged on head capsule, when button is pressed, latch enters in gear position-arresting hole the work head of angle grinder, Prevent gear and output shaft from rotating, so as to be braked to output shaft, realize and only need with once the elastic round nut energy of spanner Conveniently and efficiently load and unload grinding wheel.

But, due to by the PBU pushbutton unit be directly arranged at head capsule top, positioned at casing to zygonema at, latch has torsion Square, vibration, easily to the seam impact of casing, make casing ftracture, and latch is arranged on the top of head capsule operationally Not smoothly.Another Chinese utility model patent CN2447107Y discloses a kind of improved structure of angle-grinding arresting pin, including stop Pin, retaining spring, stop guide, described latch are arranged on the sidepiece of head capsule, and latch holds out against output shaft from side.The reality With the new sidepiece that latch is arranged on head capsule, can avoid impacting casing apposition position, prevent casing from ftractureing, make operation more It is convenient.

Although being successfully realized the braking of the output shaft of diagonal grinder heads in the prior art, due to PBU pushbutton unit or only Dynamic latch structure is arranged on head capsule top or sidepiece, with following defect：（1）PBU pushbutton unit or stop latch structure take volume Greatly, the size of head capsule is increased, causes angle grinder to enter narrow space, limit the use scope of angle grinder；（2）Press With grinding wheel disassembly direction conversely, sight line is bad when button device or latch structure operation, inconvenient operation.

The content of the invention

In view of this, the purpose of the present invention is the defect for overcoming prior art, there is provided a kind of with Two Directional Stop Mechanism Angle grinder, this kind of stop mechanism reduces head capsule size to the occupancy small volume of head capsule, makes the operation of handling grinding wheel more square Just.

To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：

A kind of angle grinder with push-down stop mechanism, it include head capsule, loaded on the output shaft on the head capsule, drive The gear of the output shaft, the gear box cover for being installed on the head capsule bottom, it is characterised in that：The angle grinder has push-down Stop mechanism, the push-down stop mechanism includes push rod, latch and elastic component, and the push rod is located at the outer of the gear box cover Side, its one end is the rotating shaft end of the bottom that the gear box cover can be rotationally connected with along horizontal plane, its other end be for Pull the free end that the push rod is rotated；The latch is fixedly connected on the push rod, and it can wear radially movablely In on the side wall of the gear box cover；The position that the outside of the gear along the circumferential direction corresponds to the latch is provided with least two Individual groove, the latch is moved radially inward can be entered in the groove；The elastic component is connected to the push rod and institute State between gear box cover.

Preferably, the free end of the push rod has the kink for being easy to operation.

Preferably, at least two groove is positioned apart from the outside of the gear along same even circumferential.

Preferably, the elastic component is spring.

Using above-mentioned technical proposal, when the grinding wheel of angle grinder is dismantled, it is only necessary to pull the push rod on the other hand, institute is driven State in the groove that latch is moved on the outside of the gear radially inward, its rotation is limited so as to block the gear, it is real The braking to output shaft is showed, another hand can just be disassembled grinding wheel using spanner.Due to the latch no longer It is directly arranged on head capsule, but is actively located in the gear box cover, this avoid the occupancy of correct shell volume, reduces The size of head capsule；On the other hand, due to using push-down structure, latch can just be driven by the free end for pulling push rod Motion, it is to avoid sight line is subject to the defect that grinding wheel stops when directly operating latch, makes the operation of handling grinding wheel simpler It is single, and the leverage of push rod also causes that the brake operating to gear is more laborsaving.

Brief description of the drawings

Fig. 1 is the structural representation of angle grinder of the present invention with push-down stop mechanism.

Fig. 2 be Fig. 1 along A-A to generalized section.

Fig. 3 is angle grinder of the present invention with push-down stop mechanism in the partial cutaway schematic of first state.

Fig. 4 is angle grinder of the present invention with push-down stop mechanism in the partial cutaway schematic of the second state.

Specific embodiment

Specific embodiment of the invention is described in detail below in conjunction with the accompanying drawings.

Fig. 1 to Fig. 4 is referred to, the present invention provides a kind of angle grinder with push-down stop mechanism, and it includes angle grinder Body 10, head capsule 11, loaded on the output shaft 20 on the head capsule 11, drive the output shaft 20 gear 21, be installed on it is described The gear box cover 12 of the bottom of head capsule 11, grinding wheel 30, wheel guard 40, the push-down stop mechanism include push rod 50, latch 60 and spring 70.

, located at the outside of the gear box cover 12, its one end along horizontal plane can be rotationally connected with institute for the push rod 50 The rotating shaft end 51 of the bottom of gear box cover 12 is stated, its other end is the free end 52 for pulling the rotation of the push rod 50.

The latch 60 is fixedly connected on the push rod 50, and it can radially movablely be arranged in the gear box cover On 12 side wall；The position that the outside of the gear 21 along the circumferential direction corresponds to the latch 60 is provided with four grooves 22, institute State latch 50 and move can enter in the groove 22 radially inward.

The spring 70 is connected between the push rod and the gear box cover 12.

In the present embodiment, the free end 52 of the push rod 50 has the kink 53 for being easy to operation；Four grooves 22 are positioned apart from the outside of the gear 21 along same even circumferential, and the latch 60 is fixed on described by screw 80 On push rod 50.

Fig. 3 is referred to, when first state, the push rod 50 is in bullet for angle grinder of the present invention with push-down stop mechanism Position in unclamping in the presence of spring 70, away from the groove 22 of the gear 21, now gear 21 can band for the latch 60 Dynamic output shaft 20 is freely rotated.

Fig. 4 is referred to, angle grinder of the present invention with push-down stop mechanism load and unload grinding wheel 30 when the second state When, the kink 53 of the free end 52 of the push rod 50 need to be only pulled, make the push rod 50 along the rotating shaft end 50 to output shaft 20 inner side rotation, along radial inward movement under the drive of push rod 50, latch 60 enters the gear to the latch 60 In 21 groove 22, so as to gear 21 be blocked, gear 21 is set to rotate, therefore output shaft 20 is also braked, and now only needs Grinding wheel 30 can just be disassembled with a spanner.Equally, can also use same when grinding wheel 30 are installed Mode of operation.After the completion of grinding wheel 30 is loaded and unloaded, the push rod 50 is unclamped, push rod 50 resets in the presence of spring 70, stop Pin 60 exits the groove 22 of the gear 21, so that gear 21 can drive output shaft 20 freely to rotate, angle grinder can normal work Make.

After using above-mentioned technical proposal, make more changing jobs for grinding wheel simpler and laborsaving, and reduce angle mill The size of head shell, angle grinder can carry out operation into more narrow space.

The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention, all according to the present invention The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.

Claims

1. a kind of angle grinder with push-down stop mechanism, it include head capsule, loaded on the output shaft on the head capsule, drive institute The gear for stating output shaft is, the gear box cover for being installed on the head capsule bottom, it is characterised in that：There is the angle grinder push-down to stop Motivation structure, the push-down stop mechanism includes push rod, latch and elastic component, and the push rod is located at the outer of the gear box cover Side, its one end is the rotating shaft end of the bottom that the gear box cover can be rotationally connected with along horizontal plane, its other end be for Pull the free end that the push rod is rotated；The latch is fixedly connected on the push rod, and it can wear radially movablely In on the side wall of the gear box cover；The position that the outside of the gear along the circumferential direction corresponds to the latch is provided with least two Individual groove, the latch is moved radially inward can be entered in the groove；The elastic component is connected to the push rod and institute State between gear box cover.

2. the angle grinder with push-down stop mechanism according to claim 1, it is characterised in that：The freedom of the push rod End has the kink for being easy to operation.

3. the angle grinder with push-down stop mechanism according to claim 1, it is characterised in that：Described at least two is recessed Groove is positioned apart from the outside of the gear along same even circumferential.

4. the angle grinder with push-down stop mechanism according to claim 1, it is characterised in that：The elastic component is bullet Spring.