An angle grinder with quick replacement maintenance mechanism

Abstract

The present application relates to the technical fields of angle grinder maintenance and replacement, and particularly relates to an angle grinder with quick replacement and maintenance mechanism, which comprises a main shell, a driving motor installed in the main shell, a control handle movably assembled on the side wall of the main shell, and a quick-release self-adaptive dust cover installed on the side of the main shell away from the control handle. The angle-adjustable design between the main shell and the control handle of the angle grinder with quick replacement and maintenance mechanism makes the operation mode and applicable scenarios more diverse. The quick-release self-adaptive dust cover on the main shell is designed in a quick-release structure, which can be quickly assembled and disassembled according to needs, and is limited by elastic extrusion, which can improve the internal impact resistance and shock absorption.

Description

Technical Field

[0001] This invention relates to the field of angle grinder maintenance and replacement technology, and in particular to an angle grinder equipped with a quick replacement and maintenance mechanism. Background Technology

[0002] An angle grinder is a multi-functional power tool mainly used for various processing tasks such as cutting, grinding, polishing, and drilling. It uses a high-speed rotating grinding wheel or disc to treat the surface of objects and is widely used in processing various materials such as metal, stone, wood, and plastic. Most existing angle grinders have a fixed structure design between the body and handle, resulting in a relatively fixed operating method. Furthermore, the protective cover of the angle grinder has a limited protection range and cannot be adjusted to adapt to different operating methods, resulting in limited dust protection. At the same time, the installation and removal of the angle grinder cover and grinding wheel are also very cumbersome, leading to high maintenance costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the existing angle grinders have a fixed structure design between the body and the handle, which results in a relatively fixed operation mode. Moreover, the protective range of the angle grinder's protective cover is limited and cannot be adjusted to adapt to different operation modes, resulting in limited dust protection. At the same time, the installation and removal of the angle grinder cover and grinding wheel are also very troublesome, and the later maintenance cost is relatively high.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an angle grinder with a quick-change and maintenance mechanism, including a main housing and a drive motor installed inside the main housing, a control handle is movably mounted on the side wall of the main housing, a quick-release adaptive dust cover is installed on the side of the main housing away from the control handle, and a quick-release lateral drive seat controlled by the drive motor is provided inside the quick-release adaptive dust cover.

[0005] The outer side of the main housing is movably fitted with a magnetic locking claw at the quick-release adaptive dust cover mounting end, and the quick-release adaptive dust cover mounting end has a lateral loading and unloading port that cooperates with the magnetic locking claw.

[0006] The quick-release lateral drive seat includes a lateral transmission disc axially fixed to the outer drive shaft of the drive motor via a bushing, a strip-shaped flip groove opened on the side wall of the lateral transmission disc, a flip limiting plate movably installed at the opening position of the strip-shaped flip groove, and a shrinking spring installed between the flip limiting plate and the inner wall of the strip-shaped flip groove.

[0007] The quick-release adaptive dust 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 side dust collection box fixed on the outer surface of the arc-shaped extension cover, a ranging control unit fixed on one side of the arc-shaped guide rails, and a control motor fixed on the arc-shaped guide rails.

[0008] The arc-shaped extension cover has a lateral opening at the location of the detachable side dust collection box. The arc-shaped extension cover has splicing frames on both sides of the lateral opening for installing the detachable side dust collection box. The detachable side dust collection box is slidably assembled with the arc-shaped extension cover by inserting splicing blocks on both sides into the splicing frames.

[0009] The detachable side dust collection box is elastically fitted with a metal filter screen at the corresponding side opening position, and a metal sound-absorbing module is installed on the inner side of the metal filter screen.

[0010] The top of the control grip is axially fixed with a top mounting base for movably mounting the main body housing. The main body housing is inserted into the top mounting base through an end connecting block and movably assembled with the control grip.

[0011] The top mounting base has a lateral limiting through hole on its side wall, and the end connecting block has a telescopic limiting block that cooperates with the lateral limiting through hole on its side wall.

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

[0013] The lateral drive disc has an outwardly protruding lateral positioning rod on its side wall.

[0014] The beneficial effects of this invention are: (1) The angle grinder of the present invention with a quick-change maintenance mechanism adopts an angle-adjustable design between the main housing and the control handle, making its operation mode and applicable scenarios more diverse; (2) The quick-release adaptive dust cover on the main unit housing adopts a quick-release structure design, which can be quickly installed and removed as needed. At the same time, it uses elastic compression to limit the position, which can improve the internal impact resistance and shock absorption. (3) A quick-release side drive seat for mounting the grinding wheel is coaxially fixed on the drive shaft of the drive motor. The grinding wheel can be quickly replaced. The limit is achieved by lateral elastic tightening. The clamping force can be increased while rotating at high speed, thereby ensuring the installation stability of the grinding wheel. (4) The quick-release adaptive dust cover can automatically adjust the extension length of the arc-shaped extension cover on both sides according to the actual operating position, so that it can more effectively block flying dust and improve safety and environmental protection. (5) The detachable side dust collection box on the outer side of the arc-shaped extension cover can filter and collect flying debris, and at the same time reduce fire and noise, reduce noise pollution and improve safety. (6) The entire equipment adopts a detachable design, which facilitates the initial assembly and subsequent disassembly, reduces the cost of use, and greatly improves the adaptability. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a top view of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the main casing in this invention.

[0019] Figure 4 This is a partial view of the assembly end of the detachable side dust collection box in this invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Figure 1 , Figure 2 , Figure 3 and Figure 4 An angle grinder with a quick-change and maintenance mechanism is shown, including a main housing 1 and a drive motor 2 installed inside the main housing 1. A control handle 3 is movably mounted 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 power all the electronic control equipment on the angle grinder. This is the prior art. A switch for easy 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 lateral drive seat 5, which is controlled to rotate by the drive motor 2, is set inside the quick-release adaptive dust cover 4.

[0023] To facilitate magnetic assembly, a magnetic locking claw 6 is movably mounted on the outer side of the main housing 1 at the mounting end of the quick-release adaptive dust cover 4. The mounting end of the quick-release adaptive dust cover 4 has a lateral loading and unloading port 7 that cooperates with the magnetic locking claw 6.

[0024] The magnetic locking claw 6 includes a flip-limit frame installed on the outer side of the main housing 1, an annular electromagnet installed inside the main housing 1, and a compression spring installed between the flip-limit frame and the annular electromagnet. By energizing the annular electromagnet, the compression spring is controlled to contract, causing the flip-limit frame to flip. At this time, the flip-limit frame will separate from the inner wall of the quick-release adaptive dust cover 4, and the quick-release adaptive dust cover 4 will be disassembled by sliding along the flip-limit frame after it has been flipped. Conversely, after the loading and unloading port on the quick-release adaptive dust cover 4 is put on the flip-limit frame and the power of the annular electromagnet is turned off, the compression spring will press the flip-limit frame outward, which will elastically compress and fix the quick-release adaptive dust cover 4 to the outside of the main housing 1.

[0025] To accommodate the flexible limit, the quick-release lateral drive seat 5 includes a lateral transmission disk 51 axially fixed to the drive shaft on the outside of the drive motor 2 via a bushing, a strip-shaped flip groove 52 opened on the side wall of the lateral transmission disk 51, a flip limit plate 53 movably installed at the opening position of the strip-shaped flip groove 52, and a shrinking spring 54 installed between the flip limit plate 53 and the inner wall of the strip-shaped flip groove 52.

[0026] When installation is required, the flipping limit plate 53 is manually flipped inward and then inserted into the limiting port on the grinding wheel. Then, the flipping limit plate 53 is released, and the retracting spring 54 controls the flipping limit plate 53 to flip outward, squeezing and limiting the outer side of the grinding wheel. Due to 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, thus resulting in higher stability.

[0027] To facilitate adaptive adjustment, the quick-release adaptive dust cover 4 includes an arc-shaped protective cover 41, arc-shaped guide rails 42 mounted on both sides of the arc-shaped protective cover 41, an arc-shaped extension cover 43 slidably mounted inside the arc-shaped guide rails 42, a detachable side dust collection box 44 fixed on the outer surface of the arc-shaped extension cover 43, a ranging control unit 45 fixed on one side of the arc-shaped guide rails 42, and a control motor 46 fixed on the arc-shaped guide rails 42.

[0028] The ranging control unit 45 is an infrared ranging probe. By detecting the distance to the working surface, it adjusts the control motor 46, which drives the arc-shaped extension cover 43 to slide along the arc-shaped guide rail 42, thus bringing the arc-shaped extension cover 43 as close as possible to the working surface, but with a certain gap between them. Then, the detachable side dust collection box 44 is used to collect the flying debris.

[0029] To facilitate disassembly and assembly, the arc-shaped extension cover 43 has a side opening at the position of the detachable side dust collection box 44. The arc-shaped extension cover 43 has splicing frames 47 on both sides of the side opening for installing the detachable side dust collection box 44. The detachable side dust collection box 44 is slidably assembled with the arc-shaped extension cover 43 by inserting the splicing frames 47 into the side splicing blocks.

[0030] To facilitate slag collection and noise reduction, a metal filter screen 8 is flexibly fitted at the corresponding side opening position of the detachable side dust collection box 44, and a metal noise reduction module 9 is installed on the inner side of the metal filter screen 8.

[0031] The metal filter 8 can filter impurities in the air. The impurities are then blown into the detachable side dust collection box 44 by the inwardly squeezed metal filter 8. The metal filter 8 can prevent internal impurities from leaking out through its elastic assembly. The metal silencing module 9 can then silence and cool the high-pressure air. The metal mesh structure is used for silencing and cooling, which is the same principle as the internal principle of a silencer and is existing technology.

[0032] To facilitate installation and angle adjustment, a top mounting base 10 for movable mounting of the main housing 1 is axially fixed at the top of the control handle 3. The main housing 1 is inserted into the top mounting base 10 via an end connecting block 11 and is movably assembled with the control handle 3.

[0033] To facilitate telescopic limiting, a lateral limiting through hole is provided on the side wall of the top mounting base 10, and a telescopic limiting block 12 that cooperates with the lateral limiting through hole is elastically mounted on the side wall of the end connecting block 11.

[0034] The telescopic limiting block 12 is inserted into the lateral limiting through hole by the internal spring to limit the angle between the end connecting block 11 and the top mounting seat 10.

[0035] To facilitate the adjustment drive, an arc-shaped adjustment groove 13 is provided on the outer arc-shaped surface of the arc-shaped extension cover 43, and a control gear 14 that meshes with the arc-shaped adjustment groove 13 is axially fixed on the control shaft of the control motor 46.

[0036] The control motor 46 drives the arc-shaped adjustment groove 13 and the arc-shaped extension cover 43 to slide and adjust by adjusting the rotation of the control gear 14.

[0037] To improve assembly stability, the sidewall of the lateral drive disc 51 has an outwardly protruding lateral positioning rod 55.

[0038] The grinding wheel is fitted onto the side wall of the side drive disc 51 by fitting it onto the side positioning rod 55 through the internal positioning hole.

[0039] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An angle grinder with a quick-change 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 mounted 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). A quick-release lateral drive seat (5) controlled by a drive motor (2) is provided inside the quick-release adaptive dust cover (4). The outer side of the main housing (1) is movably fitted with a magnetic locking claw (6) at the mounting end of the quick-release adaptive dust cover (4), and the mounting end of the quick-release adaptive dust cover (4) is provided with a lateral loading and unloading port (7) that cooperates with the magnetic locking claw (6). The quick-release side drive seat (5) includes a side transmission disk (51) axially fixed to the drive shaft on the outside of the drive motor (2) via a bushing, a strip-shaped flip groove (52) opened on the side wall of the side transmission disk (51), a flip limiting plate (53) movably installed at the opening position of the strip-shaped flip groove (52), and a shrinking spring (54) installed between the flip limiting plate (53) and the inner wall of the strip-shaped flip groove (52). 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 side dust collection box (44) fixed on the outer side of the arc-shaped extension cover (43), a ranging control unit (45) fixed on one side of the arc-shaped guide rails (42), and a control motor (46) fixed on the arc-shaped guide rails (42).

2. An angle grinder with a quick-change maintenance mechanism according to claim 1, characterized in that: The arc-shaped extension cover (43) has a lateral opening at the position of the detachable side dust collection box (44). The arc-shaped extension cover (43) has splicing frames (47) on both sides of the lateral opening for installing the detachable side dust collection box (44). The detachable side dust collection box (44) is slidably assembled with the arc-shaped extension cover (43) by inserting the splicing blocks on both sides into the splicing frames (47).

3. An angle grinder with a quick-change maintenance mechanism according to claim 2, characterized in that: The detachable side dust collection box (44) is elastically fitted with a metal filter screen (8) at the corresponding side opening position, and a metal noise reduction module (9) is installed on the inner side of the metal filter screen (8).

4. An angle grinder with a quick-change maintenance mechanism according to claim 1, characterized in that: The top of the control grip (3) is axially fixed with a top mounting base (10) for movably mounting the main housing (1). The main housing (1) is inserted into the top mounting base (10) through an end connecting block (11) and movably assembled with the control grip (3).

5. An angle grinder with a quick-change maintenance mechanism according to claim 4, characterized in that: The top mounting base (10) has a lateral limiting through hole on its side wall, and the end connecting block (11) has a telescopic limiting block (12) that cooperates with the lateral limiting through hole on its side wall.

6. An angle grinder with a quick-change maintenance mechanism according to claim 1, characterized in that: The arc-shaped extension cover (43) has an arc-shaped adjustment groove (13) on its outer arc surface, and a control gear (14) that meshes with the arc-shaped adjustment groove (13) is axially fixed on the control shaft of the control motor (46).

7. An angle grinder with a quick-change maintenance mechanism according to claim 1, characterized in that: The lateral drive disc (51) has an outwardly protruding lateral positioning rod (55) on its side wall.

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