Angle grinder with quick replacement and maintenance mechanism

Abstract

The invention relates to the technical field of angle grinder maintenance and replacement, in particular to an angle grinder with a quick replacement and maintenance mechanism, which comprises a main case and a driving motor mounted in the main case, a control grab handle is movably assembled on the side wall of the main case, and a quick-release self-adaptive dust cover is mounted on one side, far away from the control grab handle, of the main case. According to the angle grinder with the rapid replacement and maintenance mechanism, the design that the angle is adjustable is adopted between the main machine shell and the control grab handle, so that the operation modes and application scenes of the angle grinder are more diversified; the quick-release type self-adaptive dust cover on the main case adopts a quick-release type structural design, can be quickly assembled and disassembled as required, and can be limited in an elastic extrusion manner, so that the internal impact resistance and shock absorption performance can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of angle grinder maintenance and replacement, and in particular to an angle grinder with a quick replacement and maintenance mechanism. Background Art

[0002] An angle grinder is a multi-functional power tool mainly used for various processing tasks such as cutting, grinding, polishing, and drilling. It processes the surface of an object through a high-speed rotating grinding wheel or grinding disc and is widely used in the processing of various materials such as metal, stone, wood, and plastic. In the existing angle grinders, the body and the handle are mostly designed with a fixed structure, resulting in a relatively fixed operation mode. Moreover, the protective range of the protective cover of the angle grinder is limited and cannot be self-adaptively adjusted according to different operation modes, resulting in limited dust-proof effect. At the same time, the disassembly and assembly of the angle grinding cover and the grinding wheel disc are very troublesome, and the later maintenance cost is relatively high. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that in the existing angle grinders, the body and the handle are mostly designed with a fixed structure, resulting in a relatively fixed operation mode. Moreover, the protective range of the protective cover of the angle grinder is limited and cannot be self-adaptively adjusted according to different operation modes, resulting in limited dust-proof effect. At the same time, the disassembly and assembly of the angle grinding cover and the grinding wheel disc are very troublesome, and the later maintenance cost is relatively high.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an angle grinder with a quick replacement and maintenance mechanism, including a main housing and a drive motor installed inside the main housing. A control grip is movably assembled on the side wall of the main housing, and a quick-release adaptive dust-proof cover is installed on the side of the main housing away from the control grip. Inside the quick-release adaptive dust-proof cover, there is a quick-release lateral drive seat controlled by the drive motor to rotate.

[0005] A magnetically controlled locking claw is movably assembled on the outer side of the main housing at the installation end of the quick-release adaptive dust-proof cover, and a lateral loading and unloading port matching the magnetically controlled locking claw is opened at the assembly end of the quick-release adaptive dust-proof cover.

[0006] The quick-release lateral drive seat includes a lateral transmission disc axially fixed on the drive shaft outside the drive motor through a bushing, a strip-shaped flipping groove opened on the side wall of the lateral transmission disc, a flipping limiting plate movably installed at the opening position of the strip-shaped flipping groove, and a contraction elastic sheet installed between the flipping limiting plate and the inner wall of the strip-shaped flipping groove.

[0007] The quick-release adaptive dust-proof cover includes an arc-shaped protective cover, arc-shaped guide rails installed on both sides of the arc-shaped protective cover, an arc-shaped extension cover slidably installed inside the arc-shaped guide rails, a detachable lateral dust collection box fixed on the outer side of the arc-shaped extension cover, a ranging control unit fixed on one side of the arc-shaped guide rail, and a control motor fixed on the arc-shaped guide rail.

[0008] A lateral opening is provided on the arc-shaped extension cover at the position of the detachable lateral dust collection box. Splicing frames for installing the detachable lateral dust collection box are provided on both sides of the lateral opening on the arc-shaped extension cover. The detachable lateral dust collection box is slidably assembled with the arc-shaped extension cover by inserting the two-sided assembly blocks into the interior of the splicing frames.

[0009] A metal filter screen is elastically assembled at the position of the domestic lateral opening of the detachable lateral dust collection box, and a metal sound absorption module is installed on the inner side surface of the metal filter screen.

[0010] A top assembly seat for movably installing the main housing is axially fixed at the top end of the control handle. The main housing is movably assembled with the control handle by inserting the end connecting block into the interior of the top assembly seat.

[0011] Lateral limiting through holes are provided on the side wall of the top assembly seat, and telescopic limiting blocks that cooperate with the lateral limiting through holes are elastically assembled on the side wall of the end connecting block.

[0012] Arc-shaped adjustment tooth grooves are provided on the outer arc surface of the arc-shaped extension cover, and a control gear that meshes with the arc-shaped adjustment tooth grooves is axially fixed on the control shaft of the control motor.

[0013] Lateral positioning rods protruding outward are provided on the side wall of the lateral transmission disc.

[0014] The beneficial effects of the present invention are as follows:

[0015] (1) An angle-adjustable design is adopted between the main housing and the control handle of the angle grinder with a quick replacement and maintenance mechanism of the present invention, making its operation mode and applicable scenarios more diverse;

[0016] (2) The quick-release adaptive dust-proof cover on the main housing adopts a quick-release structure design, can be quickly loaded and unloaded as needed, and uses the elastic extrusion method for limiting, which can improve the internal impact resistance and shock absorption;

[0017] (3) A quick-release lateral drive seat for installing the grinding wheel disc is coaxially fixed on the drive shaft of the drive motor, which can quickly replace the grinding wheel disc, and uses the lateral elastic tightening method for limiting, which can improve the clamping force while rotating at high speed, thereby ensuring the installation stability of the grinding wheel disc;

[0018] (4) The quick-release adaptive dust-proof cover can automatically adjust the telescopic length of the two arc-shaped extension covers according to the actual operation position, making it more effective in blocking flying chips and improving safety and environmental protection;

[0019] (5) The detachable side dust collection box on the outer side of the arc-shaped extension cover can filter and collect flying debris, while reducing the fire and noise, reducing noise pollution and enhancing safety;

[0020] (6) The whole device adopts a detachable design, which is convenient for pre-assembly and post-disassembly, reduces the use cost and greatly improves the adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 is a schematic structural view of the present invention.

[0023] Figure 2 is a top view of the present invention.

[0024] Figure 3 is a schematic internal structure view of the main housing in the present invention. [[ID=2I]]

[0025] Figure 4 is a partial view of the assembly end of the detachable side dust collection box in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in, a angle grinder with a quick replacement and maintenance mechanism includes a main housing 1 and a driving motor 2 installed inside the main housing 1. A control handle 3 is movably assembled on the side wall of the main housing 1. A rechargeable lithium battery is installed inside the control handle 3. The lithium battery is used to supply power to all the electric control devices on the angle grinder, which is the prior art. A switch for convenient manual control is installed on the outer wall. A quick-release adaptive dust cover 4 is installed on the side of the main housing 1 away from the control handle 3. A quick-release side driving seat 5 controlled by the driving motor 2 is arranged inside the quick-release adaptive dust cover 4.

[0029] To cooperate with magnetic control assembly, a magnetically controlled locking claw 6 is movably assembled at the installation end of the quick-release adaptive dust cover 4 on the outer side of the main housing 1, and a lateral loading and unloading port 7 matching the magnetically controlled locking claw 6 is provided at the assembly end of the quick-release adaptive dust cover 4.

[0030] The magnetically controlled locking claw 6 includes a flipping limit frame installed on the outer side surface of the main housing 1, an annular electromagnet installed inside the main housing 1, and a compression spring installed between the flipping limit frame and the annular electromagnet. By energizing the annular electromagnet, the compression spring is controlled to contract, driving the flipping limit frame to flip. At this time, the flipping limit frame will be separated from the inner wall of the quick-release adaptive dust cover 4, and the quick-release adaptive dust cover 4 will be translated and disassembled along the flipped flipping limit frame; conversely, after putting the loading and unloading port on the quick-release adaptive dust cover 4 over the flipping limit frame, turning off the power supply of the annular electromagnet, the compression spring extrudes the flipping limit frame outwards, and the quick-release adaptive dust cover 4 will be elastically squeezed and fixed on the outer side of the main housing 1.

[0031] To cooperate with elastic limit, the quick-release lateral drive seat 5 includes a lateral transmission disk 51 axially fixed on the drive shaft outside the drive motor 2 through a bushing, a strip-shaped flipping groove 52 opened on the side wall of the lateral transmission disk 51, a flipping limit plate 53 movably installed at the opening position of the strip-shaped flipping groove 52, and a contraction spring piece 54 installed between the flipping limit plate 53 and the inner wall of the strip-shaped flipping groove 52.

[0032] When installation is required, manually control the flipping limit plate 53 to flip inwards, then insert it into the limit port on the grinding wheel disk, and then release the flipping limit plate 53. The contraction spring piece 54 controls the flipping limit plate 53 to flip outwards, squeezing and limiting the outside of the grinding wheel disk. Then, due to the centrifugal force, the faster the rotation speed, the greater the squeezing force of the flipping limit plate 53 on the surface of the grinding wheel disk, so the stability is higher.

[0033] To cooperate with adaptive adjustment, the quick-release adaptive dust cover 4 includes an arc-shaped protective cover 41, arc-shaped guide rails 42 installed on both sides of the arc-shaped protective cover 41, an arc-shaped extension cover 43 slidably installed inside the arc-shaped guide rails 42, a detachable lateral dust collection box 44 fixed on the outer side surface of the arc-shaped extension cover 43, a distance measurement control unit 45 fixed on one side of the arc-shaped guide rail 42, and a control motor 46 fixed on the arc-shaped guide rail 42.

[0034] The distance measurement control unit 45 is an infrared distance measurement probe. By detecting the distance to the working surface, the control motor 46 is adjusted, and the control motor 46 is used to drive the arc-shaped extension cover 43 to slide along the arc-shaped guide rail 42, so that the arc-shaped extension cover 43 is as close as possible to the working surface, but there is a certain gap from the working surface. Then, the detachable side dust collection box 44 is used to collect the flying chips.

[0035] For the sake of facilitating disassembly and assembly, a lateral opening is provided on the arc-shaped extension cover 43 at the position of the detachable lateral dust collector 44. On both sides of the lateral opening on the arc-shaped extension cover 43, there are splicing frames 47 for installing the detachable lateral dust collector 44. The detachable lateral dust collector 44 is slidably assembled with the arc-shaped extension cover 43 by inserting the two side splicing blocks into the inside of the splicing frames 47.

[0036] For the convenience of slag collection, noise reduction and temperature reduction, a metal filter net 8 is elastically assembled at the position of the domestic lateral opening of the detachable lateral dust collector 44, and a metal noise reduction module 9 is installed on the inner side surface of the metal filter net 8.

[0037] The metal filter net 8 can filter impurities in the air, and then the impurities are blown into the inside of the detachable lateral dust collector 44 along with the inwardly squeezed metal filter net 8. Then, the metal filter net 8 can prevent internal impurities from leaking out through elastic assembly. Then, the high-pressure air can be silenced and cooled by the metal noise reduction module 9. Using a metal mesh structure for noise reduction and temperature reduction is the same as the principle inside the muffler and is an existing technology.

[0038] For the sake of facilitating installation and angle adjustment, a top assembly seat 10 for movably installing the main housing 1 is axially fixed at the top end of the control handle 3. The main housing 1 is movably assembled with the control handle 3 by inserting the end connection block 11 into the inside of the top assembly seat 10.

[0039] For the sake of facilitating telescopic limit, a lateral limit through hole is provided on the side wall of the top assembly seat 10, and a telescopic limit block 12 that cooperates with the lateral limit through hole is elastically assembled on the side wall of the end connection block 11.

[0040] The telescopic limit block 12 is inserted into the inside of the lateral limit through hole by the spring inside to limit the angle between the end connection block 11 and the top assembly seat 10.

[0041] For the sake of facilitating adjustment drive, an arc-shaped adjustment tooth groove 13 is provided on the outer arc surface of the arc-shaped extension cover 43, and a control gear 14 that meshes with the arc-shaped adjustment tooth groove 13 is axially fixed on the control shaft of the control motor 46.

[0042] The control motor 46 drives the rotation of the control gear 14, thereby driving the arc-shaped adjustment tooth groove 13 and the arc-shaped extension cover 43 to perform sliding adjustment.

[0043] For the sake of improving assembly stability, the side wall of the lateral transmission disc 51 has a laterally protruding lateral positioning rod 55.

[0044] The grinding wheel disc is assembled on the side wall of the lateral transmission disc 51 by sleeving the internal positioning hole on the lateral positioning rod 55.

[0045] Taking the above-described ideal embodiment of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An angle grinder with a quick replacement and maintenance mechanism, comprising a main housing (1) and a drive motor (2) installed inside the main housing (1), characterized in that: A control handle (3) is movably assembled on the side wall of the main housing (1). A quick-release adaptive dust cover (4) is installed on the side of the main housing (1) away from the control handle (3). Inside the quick-release adaptive dust cover (4), there is a quick-release lateral drive seat (5) controlled by a drive motor (2) to rotate.

2. The angle grinder with a quick replacement and maintenance mechanism according to claim 1, characterized in that: A magnetically controlled locking claw (6) is movably assembled on the outer side of the main housing (1) at the installation end of the quick-release adaptive dust cover (4). A lateral loading and unloading port (7) matching the magnetically controlled locking claw (6) is opened at the assembly end of the quick-release adaptive dust cover (4).

3. The angle grinder with a quick replacement and maintenance mechanism according to claim 1, characterized in that: The quick-release lateral drive seat (5) includes a lateral transmission disc (51) axially fixed on the drive shaft outside the drive motor (2) through a bushing, a strip-shaped flipping groove (52) opened on the side wall of the lateral transmission disc (51), a flipping limit plate (53) movably installed at the opening position of the strip-shaped flipping groove (52), and a contraction elastic sheet (54) installed between the flipping limit plate (53) and the inner wall of the strip-shaped flipping groove (52).

4. The angle grinder with a quick replacement and maintenance mechanism according to claim 1, characterized in that: The quick-release adaptive dust cover (4) includes an arc-shaped protective cover (41), arc-shaped guide rails (42) installed on both sides of the arc-shaped protective cover (41), an arc-shaped extension cover (43) slidably installed inside the arc-shaped guide rails (42), a detachable lateral dust collection box (44) fixed on the outer side surface of the arc-shaped extension cover (43), a ranging control unit (45) fixed on one side of the arc-shaped guide rail (42), and a control motor (46) fixed on the arc-shaped guide rail (42).

5. The angle grinder with a quick replacement and maintenance mechanism according to claim 4, characterized in that: A lateral opening is opened on the arc-shaped extension cover (41) at the position of the detachable lateral dust collection box (44). There are splicing frames (47) for installing the detachable lateral dust collection box (44) on both sides of the lateral opening on the arc-shaped extension cover (41). The detachable lateral dust collection box (44) is slidably assembled with the arc-shaped extension cover (43) by inserting the splicing blocks on both sides into the inside of the splicing frames (47).

6. The angle grinder with a quick replacement and maintenance mechanism according to claim 5, characterized in that: A metal filter screen (8) is elastically assembled at the position of the domestic lateral opening of the detachable lateral dust collection box (44). A metal sound absorption module (9) is installed on the inner side surface of the metal filter screen (8).

7. The angle grinder with a quick replacement and maintenance mechanism according to claim 1, characterized in that: At the top end of the control handle (3), a top assembly seat (10) for movably installing the main housing (1) is axially fixed. The main housing (1) is movably assembled with the control handle (3) by inserting the end connecting block (11) into the inside of the top assembly seat (10).

8. The angle grinder with a quick replacement and maintenance mechanism according to claim 7, characterized in that: Lateral limit through holes are opened on the side wall of the top assembly seat (10). A telescopic limit block (12) elastically assembled with the lateral limit through holes is installed on the side wall of the end connecting block (11).

9. The angle grinder with a quick replacement and maintenance mechanism according to claim 4, characterized in that: An arc-shaped adjustment tooth groove (13) is opened on the outer arc surface of the arc-shaped extension cover (43). A control gear (14) meshing with the arc-shaped adjustment tooth groove (13) is axially fixed on the control shaft of the control motor (46).

10. The angle grinder with a quick replacement and maintenance mechanism according to claim 3, characterized in that: A lateral positioning rod (55) protruding outward is provided on the side wall of the lateral transmission disc (51).

Images