CN211540712U

CN211540712U - Angle grinder

Info

Publication number: CN211540712U
Application number: CN201922368626.9U
Authority: CN
Inventors: 孙庆熘
Original assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Current assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-22
Anticipated expiration: 2029-12-25

Abstract

An angle grinder is provided with a grinding disc and comprises a main body part, a protection assembly connected to the front end of the main body part and an output shaft arranged on the main body part and extending into the protection assembly, wherein the grinding disc is detachably connected to the output shaft, the grinding disc is provided with a grinding layer, the protection assembly comprises a fixed disc fixed at the front end of the main body part, a protective cover connected to the fixed disc and an elastic part supported between the fixed disc and the protective cover, and the protective cover moves up and down relative to the fixed disc under the action of the elastic part; the protective component comprises a stop part protruding from the upper surface of the protective cover towards the fixed disk, and the height of the stop part from the fixed disk is not more than the thickness of the grinding layer. Through set up the elastic component between fixed disk and guard shield, set up the position stopping portion on the guard shield to the height that will stop the position portion apart from the fixed disk sets for the thickness that is not more than the grinding blanket, when the grinding blanket wearing and tearing reached extreme condition, the position stopping portion of guard shield leaned on in the lower surface of fixed disk, suggestion staff need the abrasive disc of renewal.

Description

Angle grinder

[ technical field ]

The utility model relates to an angle mill, in particular to angle mill that fitment, building occasion were used.

[ background art ]

The angle grinder is an electric tool which is driven by a motor and drives a grinding disc to rotate, a large amount of dust is generated during the operation of the grinding disc of the angle grinder, and the generated dust can scatter around, so that a protective cover is required to be arranged on the peripheral side of the grinding disc, and a dust collecting device is externally connected to the protective cover to collect the dust generated during grinding.

Please refer to chinese patent No. 201080018053.0 issued on 11/02/2015, which discloses a disc grinder comprising a grinding tool, a dust hood integrally covering the grinding tool, and a dust collecting pipe disposed at the right side of the dust hood, wherein the dust hood is provided with a plurality of leaf springs, and the dust hood is floatingly supported by the elastic force of the leaf springs.

In view of the above, there is a need for an improved angle grinder that overcomes the shortcomings of the prior art.

[ contents of utility model ]

To prior art's not enough, the utility model aims to provide an angle mill with suggestion change abrasive disc function.

The utility model provides a prior art problem can adopt following technical scheme: an angle grinder is provided with a grinding disc, the angle grinder comprises a main body part, a protection assembly connected to the front end of the main body part and an output shaft installed on the main body part and extending into the protection assembly, the grinding disc is detachably connected to the output shaft, the grinding disc is provided with a grinding layer, the protection assembly comprises a fixed disc fixed to the front end of the main body part, a protective cover connected to the fixed disc and an elastic piece supported between the fixed disc and the protective cover, and the protective cover moves up and down relative to the fixed disc under the action of the elastic piece; the protective component comprises a stopping part protruding from the upper surface of the protective cover to the fixed disc, and the height of the stopping part from the fixed disc is not more than the thickness of the grinding layer.

The further improvement scheme is as follows: the protection component includes certainly the guard shield upper surface is faced the protruding screw post of stretching of fixed disk, the fixed disk includes corresponding to the mounting hole and the screw of screw post, the screw post is followed the downside of fixed disk passes the mounting hole, the screw is followed the upside of fixed disk is installed extremely in the screw post, just the screw head support by in the upper surface of fixed disk.

The further improvement scheme is as follows: the elastic piece is a compression spring and is sleeved on the peripheral side of the screw post, one end of the elastic piece is abutted against the lower surface of the fixed disc, and the other end of the elastic piece is abutted against the upper surface of the protective cover.

The further improvement scheme is as follows: the grinding disc is accommodated in the protective cover, and the grinding layer does not protrude out of the lower end face of the protective cover.

The further improvement scheme is as follows: when the abrasion of the grinding layer reaches the limit state, the stop part of the protective cover is abutted against the lower surface of the fixed disc.

The further improvement scheme is as follows: the protective cover comprises a main cover body and an auxiliary cover body which are detachably connected with each other, and when the auxiliary cover body is detached, a part of the grinding disc in the circumferential direction is exposed to the outer side of the protective cover.

The further improvement scheme is as follows: the main cover body with the auxiliary cover body is including the first dovetail and the second dovetail of interconnect, first dovetail set up in the main cover body with the tip of the auxiliary cover body, the second dovetail set up in between the first dovetail.

The further improvement scheme is as follows: the protection assembly comprises a ventilation opening communicated with fluid inside the protective cover, one end of the ventilation opening is connected with the protective cover, the other end of the ventilation opening is connected with an external dust suction device, and the inner diameter of one end of the ventilation opening is smaller than that of one end of the external dust suction device.

The further improvement scheme is as follows: the angle grinder comprises an auxiliary handle protruding outwards from the side face of the main body part, and the auxiliary handle is detachably connected to the main body part.

Compared with the prior art, the utility model discloses following beneficial effect has: through set up the elastic component the fixed disk with set up between the guard shield set up the position stopping portion on the guard shield, and will the position stopping portion distance the height of fixed disk sets for to be not more than the thickness of grinding layer, when grinding layer wearing and tearing reach extreme condition, the position stopping portion of guard shield support and lean on in the lower surface of fixed disk, the suggestion staff need change new abrasive disc. Meanwhile, when the grinding layer is not worn, the grinding layer does not protrude out of the lower end face of the protective cover, so that dust generated by grinding is guaranteed to be collected in the protective cover, and the ground dust is prevented from scattering; and the main cover body and the auxiliary cover body are connected through a dovetail tenon, so that the structure is simple, and the disassembly and the assembly are convenient.

[ description of the drawings ]

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

FIG. 1 is a schematic view of the overall structure of the angle grinder of the present invention;

FIG. 2 is a schematic view of the angle grinder of FIG. 1 with the guard assembly removed;

FIG. 3 is a schematic structural view of a guard assembly of the angle grinder shown in FIG. 1;

FIG. 4 is a view of the angle grinder of FIG. 1 with the grinding disk unworn;

FIG. 5 is a view of the angle grinder of FIG. 4 after the grinding disks have worn away;

fig. 6 is a schematic view of the main housing and auxiliary housing structure of the shield assembly shown in fig. 3.

[ detailed description of the invention ]

The present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1 and 2, an embodiment of the present invention relates to an angle grinder 100 with a grinding disc 200, wherein the angle grinder 100 includes a main body 101, a protective assembly 102 connected to a front end of the main body 101, an output shaft 103 mounted on the main body 101 and extending into the protective assembly 102, and an auxiliary handle 104 protruding outward from a side surface of the main body 101, and the grinding disc 200 is detachably connected to the output shaft 103. The main body 101 includes a grip portion disposed at an outer portion, and a motor and a speed reduction mechanism (not shown) disposed at an inner portion, the motor being connected to the speed reduction mechanism to drive the output shaft 103 and the polishing disk 200 to rotate. The auxiliary handle 104 is detachably connected to the main body 101, the auxiliary handle 104 is substantially perpendicular to the main body 101, the polishing disc 200 has a polishing layer 201 for effective operation, in actual operation, a worker holds the holding portion with one hand and the auxiliary handle 104 with the other hand, and presses the polishing disc 200 against a working surface to perform polishing operation, and when the polishing layer 201 of the polishing disc 200 is worn and consumed, the new polishing disc 200 needs to be replaced.

Referring to fig. 1 and 3, the protection assembly 102 includes a fixed plate 1 fixed to a front end of the main body 101, a shield 2 connected to the fixed plate 1, an elastic member 3 supported between the fixed plate 1 and the shield 2, and a stopper 4 and a screw post 5 protruding from an upper surface of the shield 2 toward the fixed plate 1. The fixed disk 1 comprises a mounting hole 11 corresponding to the screw column 5 and a screw 12, the screw column 5 penetrates through the mounting hole 11 from the lower side of the fixed disk 1, the screw 12 is screwed into the screw column 5 from the upper side of the fixed disk 1, and the upper end head of the screw 12 abuts against the upper surface of the fixed disk 1. In the present embodiment, the elastic element 3 is a compression spring and is sleeved on the periphery of the screw post 5, one end of the elastic element 3 abuts against the lower surface of the fixed disk 1, and the other end abuts against the upper surface of the shield 2. Thus, the stationary platen 1 and the shield 2 can move relative to each other in the vertical direction by the elastic member 3.

In the present embodiment, the polishing disk 200 is accommodated in the shield 2, and when the polishing layer 201 is not worn, the polishing layer 201 does not protrude from the lower end surface of the shield 2, so that all the dust generated by polishing is collected in the shield 2 during operation, and good sealing performance is ensured to prevent the dust from being scattered. For better dust collection effect, the above-mentioned guard assembly 102 further includes a ventilation opening 6 in fluid communication with the inside of the hood 2, and one end of the ventilation opening 6 is connected to the hood 2, and the other end is connected to an external dust suction device. Preferably, the ventilation opening 6 has an inner diameter smaller than that of an end connected to the hood 2, so that the dust suction apparatus can more effectively suck dust inside the hood 2.

Referring to fig. 4 and 5, the height of the stop portion 4 from the fixed disk 1 is not greater than the thickness of the polishing layer 201, and in actual operation, the polishing layer 201 is worn and consumed continuously and becomes thinner and thinner, accordingly, the shield 2 is continuously close to the fixed disk 1 under the action of the elastic member 3, and the height of the stop portion 4 from the fixed disk 1 is set to be not greater than the thickness of the polishing layer 201, so that when the polishing layer 201 is worn to a limit state, the stop portion 4 of the shield 2 abuts against the lower surface of the fixed disk 1, and it is indicated that a worker needs to replace the new polishing disk 200.

Referring to fig. 6, the protective cover 2 includes a main cover 21 and an auxiliary cover 22 detachably connected to each other, and when the auxiliary cover 22 is detached, a portion of the circumferential direction of the polishing disk 200 is exposed to the outside of the protective cover 2 to polish corner environments. The main cover body 21 and the auxiliary cover body 22 include a first dovetail 23 and a second dovetail 24 connected to each other, the first dovetail 23 is provided at the end portions of the main cover body 21 and the auxiliary cover body 22, and the second dovetail 24 is provided between the first dovetails 23. The main cover body 21 and the auxiliary cover body 22 are connected through dovetail tenons, and the structure is simple and convenient to disassemble and assemble.

The utility model discloses a set up elastic component 3 between fixed disk 1 and guard shield 2, set up position stopping portion 4 on guard shield 2 to position stopping portion 4 highly sets for the thickness that is not more than the wearing layer 201 apart from fixed disk 1, when the wearing and tearing of wearing layer 201 reach extreme condition, position stopping portion 4 of guard shield 2 supports and leans on the lower surface in fixed disk 1, and the suggestion staff needs the abrasive disc 200 of renewal. When the polishing layer 201 is not worn, the polishing layer 201 does not protrude from the lower end surface of the shield 2, so that dust generated by polishing is guaranteed to be collected in the shield 2, and the dust generated by polishing is prevented from scattering. And main cover body 21 and auxiliary cover body 22 are connected through the dovetail tenon, simple structure, the dismouting of being convenient for.

The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that there are numerous other alternatives to the angle grinder of the present invention without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. An angle grinder (100) is provided with a grinding disc (200), the angle grinder (100) comprises a main body part (101), a protection assembly (102) connected to the front end of the main body part (101) and an output shaft (103) installed on the main body part (101) and extending into the protection assembly (102), the grinding disc (200) is detachably connected to the output shaft (103), the grinding disc (200) is provided with a grinding layer (201), the protection assembly (102) comprises a fixed disc (1) fixed to the front end of the main body part (101), a protective cover (2) connected to the fixed disc (1) and an elastic piece (3) supported between the fixed disc (1) and the protective cover (2), and the protective cover (2) moves up and down relative to the fixed disc (1) under the action of the elastic piece (3); the method is characterized in that: the protective assembly (102) comprises a stopping part (4) protruding from the upper surface of the shield (2) towards the fixed disc (1), and the height of the stopping part (4) from the fixed disc (1) is not more than the thickness of the grinding layer (201).

2. The angle grinder (100) of claim 1, wherein: protection component (102) include certainly guard shield (2) upper surface orientation the protruding screw post (5) of stretching of fixed disk (1), fixed disk (1) is including corresponding to mounting hole (11) and screw (12) of screw post (5), screw post (5) are followed the downside of fixed disk (1) passes mounting hole (11), screw (12) are followed the upside of fixed disk (1) is installed extremely in screw post (5), just screw (12) head support by in the upper surface of fixed disk (1).

3. The angle grinder (100) of claim 2, wherein: elastic component (3) are compression spring and the cover is located the week side of screw post (5), the one end of elastic component (3) support lean on in the lower surface of fixed disk (1), and the other end support lean on in the upper surface of guard shield (2).

4. The angle grinder (100) of claim 1, wherein: the grinding disc (200) is accommodated in the protective cover (2), and the grinding layer (201) does not protrude out of the lower end face of the protective cover (2).

5. The angle grinder (100) of claim 4, wherein: when the abrasion of the grinding layer (201) reaches a limit state, the stop part (4) of the shield (2) is abutted against the lower surface of the fixed disc (1).

6. The angle grinder (100) of claim 1, wherein: the shield (2) comprises a main cover body (21) and an auxiliary cover body (22) which are detachably connected with each other, and when the auxiliary cover body (22) is detached, a part of the grinding disc (200) in the circumferential direction is exposed to the outer side of the shield (2).

7. The angle grinder (100) of claim 6, wherein: the main cover body (21) and the auxiliary cover body (22) include a first dovetail (23) and a second dovetail (24) that are connected to each other, the first dovetail (23) is provided at an end portion of the main cover body (21) and the auxiliary cover body (22), and the second dovetail (24) is provided between the first dovetail (23).

8. The angle grinder (100) of claim 1, wherein: the protection assembly (102) comprises a ventilation opening (6) communicated with the inside of the shield (2), one end of the ventilation opening (6) is connected to the shield (2), the other end of the ventilation opening is connected to an external dust suction device, and the inner diameter of one end of the ventilation opening (6) is smaller than that of one end of the external dust suction device.

9. The angle grinder (100) of claim 1, wherein: the angle grinder (100) comprises an auxiliary handle (104) protruding outwards from the side face of the main body part (101), and the auxiliary handle (104) is detachably connected to the main body part (101).