Dust removal type angle grinder with multi-angle adjustment function

Abstract

The invention discloses a dust removal type angle grinder with a multi-angle adjustment function, and relates to the technical field of hardware machining tools. The dust removal type angle grinder with the multi-angle adjustment function comprises a handle mechanism, and the handle mechanism comprises a device bin; a grinding head assembly is arranged at the front end of the handle mechanism and comprises a grinding seat mechanism, the grinding seat mechanism comprises a grinding seat, a rotating groove is formed in the front end of the grinding seat, and an adjusting assembly is embedded in the rear portion of the grinding seat. The two sides of the grinding base mechanism are covered with cover shell mechanisms. A grinding head mechanism is movably hinged to the front end of the grinding seat mechanism and comprises a grinding head, the front output end of the grinding head is fixedly connected with a main shaft, the lower portion of the main shaft is fixedly connected with a grinding piece, and the upper portion of the main shaft is fixedly sleeved with a first connecting ring; rotating shaft assemblies matched with the adjusting assemblies are symmetrically installed on the two sides of the rear portion of the grinding head. An auxiliary handle mechanism is assembled at one end of the adjusting assembly, and a cover buckling mechanism is assembled at the other end of the adjusting assembly. According to the dust removal type angle grinder with multi-angle adjustment, the operation flexibility is improved.

Description

Technical Field

[0001] This invention relates to the field of hardware processing tools, specifically to a dust-removing angle grinder with multi-angle adjustment. Background Technology

[0002] An angle grinder, also known as a grinding machine or disc grinder, is an abrasive tool used for cutting and polishing fiberglass. It is a handheld power tool primarily used for cutting, grinding, and brushing metals and stone.

[0003] Early angle grinders typically featured fixed grinding head angles, which were unsuitable for multi-angle operations in complex conditions. This manifested in poor operational adaptability; in scenarios such as grinding pipe bends and beveling steel structures, the fixed-angle grinding head required operators to assume unnatural postures to match the workpiece angle. This not only reduced machining accuracy but also easily led to muscle strain for operators, resulting in a high incidence of back and shoulder injuries among workers who used fixed-angle angle grinders for extended periods. Furthermore, early multi-angle adjustment mechanisms often employed single-axis hinge designs, which were prone to angle deviation due to vibration during high-speed grinding. The locking torque was generally low and unable to withstand the reaction forces when grinding hard materials (such as granite and high-strength steel). Therefore, there is an urgent need for dust-collecting angle grinders with multi-angle adjustment to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a dust-removing angle grinder with multi-angle adjustment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dust-removing angle grinder with multi-angle adjustment, including a handle mechanism, wherein the handle mechanism includes a chamber with a built-in vacuum cleaner, and a handle is fixedly connected to the rear end of the chamber;

[0006] The front end of the handle mechanism is provided with an adjustable grinding head assembly. The grinding head assembly includes a grinding base mechanism. The grinding base mechanism includes a grinding base with a fixed connector compartment. The front end of the grinding base is provided with a rotating groove, and the rear end of the grinding base is fitted with an adjustment component.

[0007] The grinding base mechanism is symmetrically covered with a cover mechanism on both sides;

[0008] The front end of the grinding base mechanism is movably hinged to a grinding head mechanism, which includes a grinding head adapted to fit a rotating groove. The front output end of the grinding head is fixedly connected to a spindle, the lower part of the spindle is fixedly connected to a grinding disc, and the upper part of the spindle is fixedly sleeved with a first connecting ring.

[0009] The rear sides of the grinding head are symmetrically equipped with rotating shaft assemblies that cooperate with the adjustment assembly.

[0010] One end of the adjustment component is equipped with an auxiliary handle mechanism, and the other end of the adjustment component is equipped with a cover mechanism.

[0011] The grinding disc is provided with a dust collection mechanism for protection. The dust collection mechanism includes a second ring that is fixedly connected to the first ring. A protective cover that covers the grinding disc is fixedly connected to one half of the second ring.

[0012] As a preferred embodiment of the present invention, the adjusting component includes a connecting shaft that passes through the grinding base, with a torsion disc fixedly connected to each end of the connecting shaft, and a first gear fixedly sleeved at each end of the connecting shaft.

[0013] The sides of the torsion disc are evenly spaced with grooves.

[0014] The first gear is located between the grinding base and the torsion disc;

[0015] The upper rear surface of the grinding base is symmetrically fixed with handles for locking the thumb.

[0016] The front two sides of the grinding base are respectively provided with grooves.

[0017] The housing mechanism includes a housing with a fixed cover for the grinding base;

[0018] The connecting shaft passes through the cover, the torsion disc is located on the outside of the cover, and the first gear is located on the inside of the cover;

[0019] The rear end face of the cover is provided with a groove coaxial with the connecting shaft, and the periphery of the groove is provided with fastening grooves opened on the cover at equal intervals.

[0020] The front end of the cover is provided with shock-absorbing components at equal intervals.

[0021] Each of the shock-absorbing components includes a circular block that is movably inserted into the end face of the housing. A small post that penetrates the housing is fixedly connected to the end face of the circular block. A circular pad is fixedly connected to the end of the small post away from the circular block. A spring piece that wraps around the small post is fixedly connected between the circular pad and the end wall of the housing.

[0022] Each of the aforementioned shaft assemblies includes a shaft that is fixedly connected to the grinding head, the shaft passing through the grinding base;

[0023] The rotating shaft is fitted with a connector that is embedded in a groove;

[0024] A second gear that meshes with the first gear is fixedly sleeved on the rotating shaft;

[0025] A stud that penetrates the cover is fixedly connected to the middle of the end face of the rotating shaft. The outer end of the stud extends out of the cover and is threaded with a fastener.

[0026] The shock-absorbing components are evenly distributed around the stud.

[0027] As a preferred embodiment of the present invention, the auxiliary handle mechanism includes a main disk, and a first connecting post adapted to the insertion slot is fixedly connected to the middle of one end face of the main disk, and a first set of slots adapted to the connecting twist disk is opened in the middle of the end face of the first connecting post.

[0028] The inner side of the first set of grooves is provided with sliding grooves evenly spaced. The middle of the sliding groove is extended outward with an extension groove opened on the first connecting post. A locking post is adapted to be inserted into the sliding groove. The inner end of the locking post is adapted to be inserted into the plate groove. The outer end of the locking post is rounded. An extension plate adapted to be inserted into the extension groove is fixedly sleeved on the locking post. A spring is fixedly connected between the lower surface of the extension plate and the extension groove.

[0029] A screw groove is provided in the middle of the other end face of the main disk;

[0030] An auxiliary handle is provided on the other end of the main disk. The auxiliary handle is evenly and equidistantly fixed to the end face of the main disk with a first insert rod corresponding to the insertion slot. The first insert rod passes through the main disk and together passes through and is fixed to a patch plate that is movably sleeved on the outside of the first connector.

[0031] A screw rod is screwed into the middle of the auxiliary handle, the inner end of the screw rod is adapted to a screw groove, and a handle is fixedly connected to the outer end of the screw rod.

[0032] The cover mechanism includes a cover, a second connecting post with a matching insertion slot is fixedly connected to the middle of one end face of the cover, a second set of slots with a matching matching twisting disc is opened in the middle of the end face of the second connecting post, and a second insert rod corresponding to the insertion slot is fixedly connected to one end face of the cover at equal intervals.

[0033] As a preferred technical solution of the present invention, a hollow air chamber is fixedly sleeved on the outer side of the second connecting ring, a first air pipe is fixedly connected between the air chamber and the built-in vacuum cleaner of the device chamber, and a second air pipe is fixedly connected between the first air pipe and the protective cover.

[0034] The gas chamber is fitted with a coil on the near-axial side inside, and a third gas pipe is connected through the far-axial side inside. One end of the third gas pipe inserted into the gas chamber is fixedly fitted with a pipe head, and a pull rope is fixedly connected between the pipe head and the coil.

[0035] The lower end face edge of the protective cover is uniformly fitted with connecting shafts at equal intervals. The connecting shafts are movably hinged to a flip cover via a torsion spring shaft. The end of the flip cover away from the connecting shaft is tilted. An air port is opened on the inner side of the tilted end of the flip cover, and the outer side of the tilted end of the flip cover is connected to a third air pipe.

[0036] A protective strap is fixedly connected between two adjacent flip-up covers.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) The dust-removing angle grinder with multi-angle adjustment can meet the needs of vertical cutting or right-angle grinding, avoiding the inconvenience caused by the operator's operation due to the limited angle. It avoids the complexity of stepless adjustment and covers high-frequency working angles through gear adjustment, reducing the time waste caused by unnecessary adjustment, adapting to the needs of multiple scenarios and improving the flexibility of operation.

[0039] (2) A dust-removing angle grinder with multi-angle adjustment can lock the angle by pressing the first insert rod of the auxiliary handle mechanism into the locking groove. After locking, tighten the fastener so that it contacts the cover through the surface elastic pad. In addition, press the round block protruding from the surface of the cover into the cover, thereby causing the shock-absorbing component to move inward and the round pad to contact and squeeze the second gear. Thus, when the grinding disc is started, the second gear and the first gear are reduced from the impact of working vibration under the protection of the shock-absorbing component, thereby extending their service life.

[0040] (3) A dust-removing angle grinder with multi-angle adjustment has symmetrical handles fixed to both sides of the upper rear surface of the grinding base for locking the thumb. The operator holds the handle with the main hand and the auxiliary handle with the auxiliary hand. By locking the thumb of the auxiliary hand in the handle, the grip of the angle grinder is more stable, and the stability of picking up the angle grinder is improved.

[0041] (4) Dust-removing angle grinder with multi-angle adjustment. The auxiliary handle mechanism is perpendicular to the handle mechanism. The operator can hold the handle mechanism with one hand and make adjustments through the auxiliary handle mechanism with the other hand. The force transmission is more efficient and the adjustment difficulty is reduced.

[0042] (5) A dust-removing angle grinder with multi-angle adjustment: After adjusting the angle by pulling the auxiliary handle outward, push the auxiliary handle inward to re-insert the first insert rod into the slot. Through the fixed connection between the first insert rod and the plate, the plate slides along the first connecting post. During the return stroke, the plate will press the locking post out of the smooth outer end of the first connecting post under the support of the spring, so that the inner end of the locking post is inserted into the plate slot to form a buckle. Then, rotate the handle to screw the screw rod into the screw groove along the auxiliary handle and screw it into the main plate, thereby completing the self-locking of the auxiliary handle mechanism and improving the connection stability of the auxiliary handle mechanism.

[0043] (6) The dust-removing angle grinder with multi-angle adjustment can be locked by snapping the cover mechanism onto the side of the adjustment component where the auxiliary handle mechanism is not installed, and then locking the adjustment component with the auxiliary handle mechanism. In addition, the position of the end of the adjustment component can be changed to match the actual operation needs, so as to use it in conjunction with the angle adjustment of the grinding head mechanism. Under the premise of adapting to the operation scenario, the angle grinder can be held flexibly, which improves the flexibility of use.

[0044] (7) A dust-collecting angle grinder with multi-angle adjustment, which increases the exposed length of the third air pipe by unwinding the coil in the air chamber, and drives the flip cover to flip downward by connecting the torsion spring shaft of the flip cover, thereby catching the bottom side of the grinding disc (the part of the grinding disc that does not work when it is working), and the dust collector built into the chamber, thereby expanding the range of receiving and adsorbing particulate impurities and increasing dust collection.

[0045] (8) A dust-collecting angle grinder with multi-angle adjustment, which pulls and extends the third air pipe through the coil, drives the movement of the flipping hood. The flipping hood flips down to open the third air pipe for dust collection, and the flipping hood flips up and is compressed to close itself. The third air pipe is automatically switched on and off, optimizing the operation steps and improving the operation efficiency. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of one side of the structure of the present invention;

[0047] Figure 2 This is a schematic diagram of the other side of the structure of the present invention;

[0048] Figure 3 This is a schematic diagram of the handle mechanism of the present invention;

[0049] Figure 4 This is a schematic diagram of the dust collection mechanism of the present invention;

[0050] Figure 5 This is a schematic diagram of the flip-up cover of the present invention;

[0051] Figure 6 This is a schematic diagram of the flip-up cover of the present invention flipping down;

[0052] Figure 7 This is a schematic diagram of the air chamber of the present invention;

[0053] Figure 8 This is a schematic diagram of the grinding head assembly of the present invention;

[0054] Figure 9 This is a schematic diagram of the grinding base mechanism of the present invention;

[0055] Figure 10 This is a schematic diagram of the adjustment component of the present invention;

[0056] Figure 11 This is a schematic diagram showing the position of the housing mechanism of the present invention;

[0057] Figure 12 This is a schematic diagram of the housing mechanism of the present invention;

[0058] Figure 13 For the present invention Figure 12 Enlarged view of point A;

[0059] Figure 14 This is a schematic diagram of the auxiliary handle mechanism of the present invention;

[0060] Figure 15 This is a schematic diagram of the first set of grooves of the present invention;

[0061] Figure 16 This is a schematic diagram of the locking pin of the present invention;

[0062] Figure 17 This is a schematic diagram of the cover-fastening mechanism of the present invention;

[0063] Figure 18 This is a schematic diagram of the grinding head mechanism of the present invention;

[0064] Figure 19 This is a schematic diagram of the rotating shaft assembly of the present invention;

[0065] Figure 20 This is a schematic diagram of the second gear engagement of the present invention;

[0066] Figure 21 This is a schematic diagram of the connection of the shock absorption component of the present invention.

[0067] In the diagram: 1. Handle mechanism; 101. Grinding chamber; 102. Handle; 2. Grinding base mechanism; 201. Grinding base; 202. Rotary groove; 203. Connecting shaft; 204. Torque disc; 205. First gear; 206. Disc groove; 207. Lever; 208. Insertion groove; 3. Cover mechanism; 301. Cover; 302. Connecting groove; 303. Buckling groove; 304. Round block; 305. Small post; 306. Round pad; 307. Spring piece; 4. Auxiliary handle mechanism; 401. Main disc; 402. First connecting post; 403. First sleeve groove; 404. Sliding groove; 405. Extension groove; 406. Locking post; 407. Extension plate; 408. Spring; 409. Threaded groove; 410. Auxiliary handle; 411. First insertion rod; 412. Attaching disc ; 413, Screw; 414, Handle; 5, Cover-fastening mechanism; 501, Cover; 502, Second insert rod; 503, Second connecting post; 504, Second sleeve groove; 6, Grinding head mechanism; 601, Grinding head; 602, Main shaft; 603, Grinding disc; 604, First connecting ring; 605, Rotating shaft; 606, Connecting piece; 607, Second gear; 608, Screw; 609, Fastener; 7, Dust collection mechanism; 701, Second connecting ring; 702, Protective cover; 703, Air chamber; 704, First air pipe; 705, Second air pipe; 706, Coiler; 707, Third air pipe; 708, Pipe head; 709, Pull rope; 710, Connecting shaft; 711, Tilting cover; 712, Air inlet; 713, Protective belt. Detailed Implementation

[0068] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0069] Example: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 , Figure 9 , Figure 11 , Figure 18 , Figure 19 A dust-removing angle grinder with multi-angle adjustment includes a handle mechanism 1, which includes a chamber 101 with a built-in vacuum cleaner, and a handle 102 is fixedly connected to the rear end of the chamber 101.

[0070] The front end of the handle mechanism 1 is provided with an adjustable angle grinding head assembly. The grinding head assembly includes a grinding base mechanism 2. The grinding base mechanism 2 includes a grinding base 201 that fixes the connector compartment 101. The front end of the grinding base 201 is provided with a rotating groove 202, and the rear part of the grinding base 201 is fitted with an adjustment component.

[0071] The grinding base mechanism 2 is symmetrically covered with a cover mechanism 3 on both sides;

[0072] The front end of the grinding base mechanism 2 is movably hinged to a grinding head mechanism 6. The grinding head mechanism 6 includes a grinding head 601 adapted to fit the inserting slot 202. The front output end of the grinding head 601 is fixedly connected to a spindle 602. The lower part of the spindle 602 is fixedly connected to a grinding disc 603. The upper part of the spindle 602 is fixedly sleeved with a first connecting ring 604.

[0073] The rear two sides of the grinding head 601 are symmetrically equipped with rotating shaft assemblies that cooperate with the adjustment assembly;

[0074] One end of the adjustment component is equipped with an auxiliary handle mechanism 4, and the other end of the adjustment component is equipped with a cover mechanism 5;

[0075] The grinding disc 603 is provided with a dust collection mechanism 7 for protection. The dust collection mechanism 7 includes a second connecting ring 701 that is fixedly connected to the first connecting ring 604. A protective cover 702 that covers the grinding disc 603 is fixedly connected to one half of the second connecting ring 701.

[0076] Please see Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 19 , Figure 20 , Figure 21The adjustment assembly includes a connecting shaft 203 that passes through the grinding base 201, with a torsion disc 204 fixedly connected to both ends of the connecting shaft 203, and a first gear 205 fixedly sleeved at both ends of the connecting shaft 203.

[0077] The sides of the twisting disc 204 are evenly spaced with grooves 206.

[0078] The first gear 205 is located between the grinding base 201 and the torsion plate 204;

[0079] The upper rear surface of the grinding base 201 is symmetrically fixed with two handles 207 for locking the thumb.

[0080] The front two sides of the grinding base 201 are respectively provided with grooves 208.

[0081] The housing mechanism 3 includes a housing 301 with a fixed housing grinding seat 201;

[0082] The connecting shaft 203 passes through the cover 301, the torsion disc 204 is located on the outside of the cover 301, and the first gear 205 is located on the inside of the cover 301.

[0083] The rear end face of the cover 301 is provided with a groove 302 coaxial with the connecting shaft 203, and the periphery of the groove 302 is provided with fastening grooves 303 evenly spaced on the cover 301.

[0084] The front end face of the cover 301 is provided with shock-absorbing components at equal intervals.

[0085] Each shock-absorbing component includes a circular block 304 that is movably inserted into the end face of the housing 301. A small post 305 that penetrates the housing 301 is fixedly connected to the end face of the circular block 304. A circular pad 306 is fixedly connected to the end of the small post 305 away from the circular block 304. A spring piece 307 that wraps around the small post 305 is fixedly connected between the circular pad 306 and the end wall of the housing 301.

[0086] Each shaft assembly includes a shaft 605 that is fixedly connected to the grinding head 601, and the shaft 605 passes through the grinding base 201;

[0087] A connector 606 is fitted onto the rotating shaft 605 and is located within the groove 208;

[0088] A second gear 607 that meshes with the first gear 205 is fixedly sleeved on the rotating shaft 605;

[0089] A stud 608 that penetrates the cover 301 is fixedly connected to the middle of the end face of the rotating shaft 605. The outer end of the stud 608 extends out of the cover 301 and is threaded with a fastener 609.

[0090] The damping components are evenly distributed around the stud 608.

[0091] Please see Figure 14 , Figure 15 , Figure 16 , Figure 17 The auxiliary handle mechanism 4 includes a main plate 401. A first connecting post 402 adapted to the insertion groove 302 is fixedly connected to the middle of one end face of the main plate 401. A first set of grooves 403 adapted to the connecting twist plate 204 is opened in the middle of the end face of the first connecting post 402.

[0092] The inner side of the first groove 403 is provided with a sliding groove 404 evenly spaced. The middle of the sliding groove 404 is extended outward with an extension groove 405 opened on the first connecting post 402. A locking post 406 is adapted to be inserted into the sliding groove 404. The inner end of the locking post 406 is adapted to be inserted into the plate groove 206. The outer end of the locking post 406 is rounded. An extension plate 407 adapted to be inserted into the extension groove 405 is fixedly sleeved on the locking post 406. A spring 408 is fixedly connected between the lower surface of the extension plate 407 and the extension groove 405.

[0093] A screw groove 409 is provided in the middle of the other end face of the main plate 401;

[0094] A secondary handle 410 is provided on the other side of the main plate 401. The secondary handle 410 is evenly and equidistantly fixed to the end face of the main plate 401 with the first insertion rod 411 corresponding to the insertion slot 303. The first insertion rod 411 penetrates the main plate 401. The first insertion rod 411 together penetrates and is fixed to the pad 412 that is movably sleeved on the outside of the first connector 402.

[0095] A screw rod 413 is screwed into the middle of the auxiliary handle 410. The inner end of the screw rod 413 is adapted to the screw groove 409, and the outer end of the screw rod 413 is fixedly connected to the handle 414.

[0096] The cover mechanism 5 includes a cover 501. A second post 503 adapted to the insertion slot 302 is fixedly connected to the middle of one end face of the cover 501. A second slot 504 adapted to the insertion twisting disc 204 is opened in the middle of the end face of the second post 503. A second insert rod 502 corresponding to the insertion slot 303 is fixedly connected to one end face of the cover 501 at equal intervals.

[0097] Please see Figure 4 , Figure 5 , Figure 6 , Figure 7 The outer side of the second connecting ring 701 is fixedly sleeved with an internally hollow air chamber 703. The air chamber 703 and the built-in vacuum cleaner of the device chamber 101 are fixedly connected by a first air pipe 704. The first air pipe 704 and the protective cover 702 are fixedly connected by a second air pipe 705.

[0098] A coil 706 is installed on the near-axial side of the air chamber 703, and a third air pipe 707 is connected through the far-axial side of the air chamber 703. A pipe head 708 is fixedly sleeved at one end of the third air pipe 707 inserted into the air chamber 703, and a pull rope 709 is fixedly connected between the pipe head 708 and the coil 706.

[0099] The lower end face edge of the protective cover 702 is evenly fitted with connecting shafts 710. The connecting shafts 710 are movably hinged to a flip cover 711 via a torsion spring shaft. The end of the flip cover 711 away from the connecting shaft 710 is tilted. An air port 712 is opened on the inner side of the tilted end of the flip cover 711. The outer side of the tilted end of the flip cover 711 is connected to the third air pipe 707.

[0100] An elastic protective strap 713 is fixedly connected between two adjacent flip covers 711.

[0101] The working principle of this invention is as follows:

[0102] The auxiliary handle mechanism 4 drives the adjustment component to rotate, and the first gear 205 and the second gear 607 mesh, thereby driving the rotating shaft assembly to rotate, so as to adjust the angle of the grinding head mechanism 6. The adjustment range covers the common angle requirements in industrial processing, building decoration, metal processing and other fields. The interval settings precisely match the typical angle requirements of most working conditions, realizing efficient adaptability of selecting the angle as needed. It is suitable for flat grinding (such as metal plate polishing, wall leveling). The grinding disc 603 is in parallel contact with the workpiece to ensure uniform grinding over a large area. It can also be adapted to curved surface transition treatment (such as the outer wall of a pipe). It can be used for rust removal and stone arc edge grinding, reducing the rigid impact between the 603 grinding disc and the workpiece; it can be used for beveling (such as bevel pretreatment before welding of metal plates), and can quickly switch between different bevel angles; it can meet the needs of vertical cutting (such as wall grooving, steel pipe cutting) or right angle grinding (such as rust removal on the inside of angle steel), avoiding the inconvenience caused by operators operating at an angle due to limited angles. It avoids the complexity of stepless adjustment and covers high-frequency working angles through gear adjustment, reducing the time waste caused by unnecessary adjustments, adapting to the needs of multiple operating scenarios, and improving operational flexibility.

[0103] After determining the adjustment position, the angle is locked by pressing the first insert rod 411 of the auxiliary handle mechanism 4 into the locking groove 303. After locking, the fastener 609 is tightened so that it contacts the cover 301 through the surface elastic pad. In addition, the round block 304 protruding from the surface of the cover 301 is pressed into the cover 301, thereby causing the shock-absorbing component to move inward. The round pad 306 contacts and presses the second gear 607. Thus, when the grinding disc 603 is started, the impact of working vibration on the second gear 607 and the first gear 205 is reduced under the protection of the shock-absorbing component, thereby extending their service life.

[0104] By symmetrically fixing levers 207 for locking the thumb on both sides of the upper rear surface of the grinding base 201, the operator holds the handle 102 with the main hand and the auxiliary handle 410 with the auxiliary hand. By locking the thumb of the auxiliary hand in the lever 207, the grip on the angle grinder is more stable, and the stability of picking up the angle grinder is improved.

[0105] When the screw 413 is not screwed into the screw groove 409, the auxiliary hand can pull it outward by holding the auxiliary handle 410. After pulling the first insertion rod 411 out of the buckle groove 303, rotating the auxiliary handle 410 can drive the main disk 401 to rotate. In turn, through the appropriate connection between the first set of grooves 403 and the torsion plate 204, the adjustment component can be driven to rotate. Through the meshing of the first gear 205 and the second gear 607, the grinding head mechanism 6 is driven to adjust the angle. The auxiliary handle mechanism 4 significantly reduces the required adjustment force by utilizing the lever arm amplification principle through the cooperation between the adjustment component and the rotating shaft component. The auxiliary handle mechanism 4 is typically designed to be 150-200mm long (approximately three times the lever arm of the pivot assembly), which reduces the initial force required for adjustment, making it easy for female operators or those wearing heavy protective gloves to operate. The auxiliary handle mechanism 4 is perpendicular to the handle mechanism 1 (conforming to the natural grip posture of the human body), allowing the operator to hold the handle mechanism 1 with one hand and make adjustments using the auxiliary handle mechanism 4 with the other hand, without needing to put down or look for assistance. This is especially suitable for high-altitude operations (such as grinding pipes on scaffolding), making the transmission of operating force more efficient and reducing the difficulty of adjustment.

[0106] After adjusting the angle by pulling outwards, the auxiliary handle 410 is pushed inwards to re-insert the first insert rod 411 into the latching groove 303. Through the fixed connection between the first insert rod 411 and the mounting plate 412, the mounting plate 412 slides along the first connecting post 402 as the operation proceeds. During the return stroke, the mounting plate 412 will press the locking post 406, supported by the spring 408, out of the smooth outer end of the first connecting post 402 and back in, thereby causing the inner end of the locking post 406 to be inserted into the plate groove 206 to form a latch. Then, the handle 414 is rotated to screw the screw 413 along the auxiliary handle 410 into the screw groove 409 and screw it into the main plate 401, thereby completing the self-locking of the auxiliary handle mechanism 4 and improving the connection stability of the auxiliary handle mechanism 4.

[0107] The cover mechanism 5 is snapped onto the end of the adjustment component where the auxiliary handle mechanism 4 is not installed. This, in conjunction with the auxiliary handle mechanism 4, locks the adjustment component and, consequently, the grinding head mechanism 6. To better suit the needs of actual operation, the auxiliary handle mechanism 4 can be swapped to adjust the position of the end of the adjustment component, thereby allowing for angle adjustment of the grinding head mechanism 6. This enables flexible gripping of the angle grinder, improving its usability, while adapting to different operating scenarios.

[0108] The protective cover 702 is connected to the built-in vacuum cleaner in the chamber 101 via the second air pipe 705 and the first air pipe 704, thereby removing particulate impurities generated during the operation of the grinding disc 603. Due to the deflectable design of the grinding head mechanism 6, the grinding head mechanism 6 can be deflected upward along the rotating shaft assembly. At this time, the coil 706 in the air chamber 703 is unwound, thereby increasing the exposed length of the third air pipe 707. The torsion spring shaft of the connecting shaft 710 connected to the flip cover 711 drives the flip cover 711 to flip downward, thereby catching the bottom side of the grinding disc 603 (the part of the grinding disc 603 that is not working during operation) and the built-in vacuum cleaner in the chamber 101, thereby expanding the range of particulate impurities to be received and adsorbed, and increasing dust collection.

[0109] When not needed or obstructing the working part of the grinding disc 603, the inner end of the third air pipe 707 is wound onto the coiler 706. The inner end of the third air pipe 707 is closed by compression. At the same time, the flip cover 711 is pulled to flip upward. The coiler 706 pulls and extends the third air pipe 707, which drives the movement of the flip cover 711. The flip cover 711 flips down to open the third air pipe 707 for dust collection. The flip cover 711 flips up and is compressed to close itself. The third air pipe 707 switches on and off automatically, optimizing the operation steps and improving the operation efficiency.

[0110] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dust-removing angle grinder with multi-angle adjustment, including a handle mechanism (1), wherein the handle mechanism (1) includes a chamber (101) with a built-in vacuum cleaner, and a handle (102) is fixedly connected to the rear end of the chamber (101); Its features are: The front end of the handle mechanism (1) is provided with an adjustable angle grinding head assembly. The grinding head assembly includes a grinding seat mechanism (2). The grinding seat mechanism (2) includes a grinding seat (201) with a fixed connector compartment (101). The front end of the grinding seat (201) is provided with a rotating groove (202). The rear part of the grinding seat (201) is fitted with an adjustment component. The grinding base mechanism (2) is symmetrically covered with a cover mechanism (3) on both sides; The front end of the grinding base mechanism (2) is movably hinged to a grinding head mechanism (6). The grinding head mechanism (6) includes a grinding head (601) adapted to the fitting slot (202). The front output end of the grinding head (601) is fixedly connected to a spindle (602). The lower part of the spindle (602) is fixedly connected to a grinding disc (603). The upper part of the spindle (602) is fixedly sleeved with a first connecting ring (604). The grinding head (601) has symmetrically mounted rotating shaft assemblies on both sides of its rear portion, which cooperate with the adjustment assembly. One end of the adjustment component is equipped with an auxiliary handle mechanism (4), and the other end of the adjustment component is equipped with a cover mechanism (5); The grinding disc (603) is provided with a dust collection mechanism (7) for protection. The dust collection mechanism (7) includes a second ring (701) that is fixedly connected to the first ring (604). A protective cover (702) that covers the grinding disc (603) is fixedly connected to one half of the second ring (701).

2. The dust-collecting angle grinder with multi-angle adjustment according to claim 1, characterized in that: The adjustment assembly includes a connecting shaft (203) that passes through the grinding base (201), with a torsion disc (204) fixedly connected to each end of the connecting shaft (203), and a first gear (205) fixedly sleeved at each end of the connecting shaft (203). The twisting disc (204) has grooves (206) evenly spaced on its sides; The first gear (205) is located between the grinding base (201) and the torsion disc (204); The upper rear surface of the grinding base (201) is symmetrically fixed with handles (207) for locking the thumb. The grinding base (201) has grooves (208) on both sides of its front part.

3. The dust-collecting angle grinder with multi-angle adjustment according to claim 2, characterized in that: The housing mechanism (3) includes a housing (301) with a fixed housing grinding seat (201); The connecting shaft (203) passes through the cover (301), the torsion disc (204) is located outside the cover (301), and the first gear (205) is located inside the cover (301); The rear end face of the cover (301) is provided with a groove (302) coaxial with the connecting shaft (203), and the periphery of the groove (302) is provided with fastening grooves (303) opened on the cover (301) at equal intervals. The front end face of the cover (301) is provided with shock-absorbing components at equal intervals.

4. The dust-collecting angle grinder with multi-angle adjustment according to claim 3, characterized in that: Each of the shock-absorbing components includes a circular block (304) that is movably inserted into the end face of the housing (301). A small post (305) that penetrates the housing (301) is fixedly connected to the end face of the circular block (304). A circular pad (306) is fixedly connected to the end of the small post (305) away from the circular block (304). A spring piece (307) that wraps around the small post (305) is fixedly connected between the circular pad (306) and the end wall of the housing (301).

5. The dust-collecting angle grinder with multi-angle adjustment according to claim 4, characterized in that: Each of the said rotating shaft assemblies includes a rotating shaft (605) that is fixedly connected to the grinding head (601), the rotating shaft (605) passing through the grinding base (201); A connector (606) is fitted onto the rotating shaft (605) and is located within the groove (208); A second gear (607) that meshes with the first gear (205) is fixedly sleeved on the rotating shaft (605); The end face of the rotating shaft (605) is fixedly connected to a stud (608) that penetrates the cover (301). The outer end of the stud (608) extends out of the cover (301) and is threaded with a fastener (609). The shock-absorbing components are evenly distributed around the stud (608).

6. The dust-collecting angle grinder with multi-angle adjustment according to claim 2, characterized in that: The auxiliary handle mechanism (4) includes a main plate (401), and a first connector (402) adapted to the insertion slot (302) is fixedly connected to the middle of one end face of the main plate (401). A first slot (403) adapted to the insertion twist plate (204) is opened in the middle of the end face of the first connector (402). The inner side of the first set of grooves (403) is provided with sliding grooves (404) evenly spaced. The middle part of the sliding groove (404) is extended outward with an extension groove (405) opened on the first connecting post (402). A locking post (406) is adapted to be inserted into the sliding groove (404). The inner end of the locking post (406) is adapted to be inserted into the plate groove (206). The outer end of the locking post (406) is smooth. An extension plate (407) adapted to be inserted into the extension groove (405) is fixedly sleeved on the locking post (406). A spring (408) is fixedly connected between the lower surface of the extension plate (407) and the extension groove (405). A screw groove (409) is provided in the middle of the other end face of the main plate (401); An auxiliary handle (410) is provided on the other end of the main disk (401). The auxiliary handle (410) is evenly and equidistantly fixed with the first insertion rod (411) corresponding to the insertion slot (303) on the end face of the main disk (401). The first insertion rod (411) penetrates the main disk (401). The first insertion rod (411) together penetrates and is fixed with a patch plate (412) that is movably sleeved on the outside of the first connector (402). A screw rod (413) is screwed into the middle of the auxiliary handle (410). The inner end of the screw rod (413) is adapted to the screw groove (409), and the outer end of the screw rod (413) is fixedly connected to a handle (414).

7. The dust-collecting angle grinder with multi-angle adjustment according to claim 6, characterized in that: The buckle mechanism (5) includes a buckle (501), and a second post (503) adapted to the insertion slot (302) is fixedly connected to the middle of one end face of the buckle (501). A second slot (504) adapted to the insertion twisting disc (204) is opened in the middle of the end face of the second post (503). A second insert rod (502) corresponding to the insertion buckle slot (303) is fixedly connected to one end face of the buckle (501) at equal intervals.

8. The dust-collecting angle grinder with multi-angle adjustment according to claim 1, characterized in that: The outer side of the second connecting ring (701) is fixedly sleeved with an internally hollow air chamber (703), and the air chamber (703) and the built-in vacuum cleaner of the device chamber (101) are fixedly connected by a first air pipe (704), and the first air pipe (704) and the protective cover (702) are fixedly connected by a second air pipe (705). A coil (706) is fitted inside the air chamber (703) near the axis, and a third air pipe (707) is connected through the air chamber (703) on the far axis. One end of the third air pipe (707) inserted into the air chamber (703) is fixedly sleeved with a pipe head (708), and a pull rope (709) is fixedly connected between the pipe head (708) and the coil (706). The lower end face edge of the protective cover (702) is uniformly fitted with connecting shafts (710), and the connecting shafts (710) are movably hinged to a flip cover (711) via a torsion spring shaft. The end of the flip cover (711) away from the connecting shaft (710) is tilted. An air port (712) is opened on the inner side of the tilted end of the flip cover (711), and the outer side of the tilted end of the flip cover (711) is connected to a third air pipe (707). A protective strap (713) is fixedly connected between two adjacent flip covers (711).

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