CN212553186U - Polishing device - Google Patents

Abstract

The utility model discloses a grinding device, include: the device comprises a machine body, a first connector and a second connector, wherein the machine body comprises the first connector which comprises a dust outlet; the bottom plate assembly comprises a bottom plate and a polishing piece arranged on the bottom plate; the driving mechanism and the fan assembly are arranged in the machine body, the driving mechanism drives the bottom plate assembly to move, and the fan assembly is used for forming a dust exhaust air path moving towards the dust outlet; the dust collecting box comprises a second connector, the second connector comprises a dust inlet, and the second connector is detachably connected with the first connector through a locking piece; the retaining member includes: the first locking piece is arranged on one joint, and the first locking piece radially protrudes out of the joint; the second locking piece is arranged on the periphery of the other joint and comprises a sliding groove suitable for the first locking piece to enter and lock, the sliding groove comprises a guide groove and a locking groove, the guide groove is obliquely arranged relative to the axis of the other joint, and the locking groove is arranged at the tail end of the guide groove and limits the first locking piece to be separated from the locking groove.

Description

Polishing device

Technical Field

The utility model relates to an electric tool technical field especially relates to a grinding device.

Background

In the process of processing a workpiece using an electric tool (e.g., a grinding device), dust is generated, which not only pollutes air but also exposes an operator to a dust environment, and therefore, a dust collecting device is generally equipped on the electric tool.

Therefore, the electric power tool is generally equipped with a dust collecting device. Generally, a dust collecting device is provided with a separating member, dust is separated by the separating member and left in a dust box of the dust collecting device, and a dust exhaust airflow is exhausted out of the dust collecting device.

After a period of use, the dust box needs to be disassembled to dump dust or to be cleaned. The connection structure between the dust box and the main machine of the electric tool in the prior art adopts threaded connection and locking by adopting a locking structure, so that the structure is complex, the installation and the disassembly are inconvenient, and the disassembly efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grinding device to solve the dust box that exists among the prior art and dismantle inconvenient technical problem.

As the conception, the utility model adopts the technical proposal that:

an abrading device comprising:

the dust collector comprises a machine body, a dust collecting device and a dust collecting device, wherein the machine body comprises a first joint, and the first joint comprises a dust outlet;

the bottom plate assembly comprises a bottom plate and a grinding piece arranged on the bottom plate;

the driving mechanism drives the bottom plate assembly to move, and the fan assembly is used for forming a dust exhaust air path moving towards the dust outlet;

the dust collecting box comprises a second connector, the second connector comprises a dust inlet, and the second connector is detachably connected with the first connector through a locking piece;

the retaining member includes:

the first locking piece is arranged on one joint, and the first locking piece radially protrudes out of the joint;

the second retaining member is arranged on the periphery of the other joint and comprises a sliding groove suitable for the first retaining member to enter and be locked, the sliding groove comprises a guide groove and a locking groove, the guide groove is obliquely arranged relative to the axis of the other joint, and the locking groove is arranged at the tail end of the guide groove and limits the first retaining member to be separated from the locking groove.

The auxiliary disengaging component is clamped between the first joint and the second joint and has a biasing force for applying the second joint to disengage from the first joint.

Furthermore, the second joint is sleeved on the first joint, the auxiliary separation part is an elastic pad, and the elastic pad is clamped on the inner wall of the second joint.

Further, the guide groove is an arc-shaped groove, and the first locking piece is a protrusion which radially protrudes out of the first joint; the bulges and the sliding grooves are respectively provided with two, the bulges are symmetrically arranged about the axis of the first joint, and the sliding grooves are respectively arranged on two opposite sides of the periphery of the second joint.

Furthermore, the dust collecting box also comprises an end cover and a dust barrel which are detachably connected, the second joint is connected with the end cover, a cavity is formed in the dust barrel, and dust exhaust airflow enters the cavity through the dust inlet.

Furthermore, the dust collecting box also comprises a dust blocking piece, and the dust blocking piece is arranged on the bottom wall of the opening of the dust cylinder.

Further, still including set up in the end cover with the mounting structure between the dirt section of thick bamboo, the dirt section of thick bamboo with the end cover passes through mounting structure can dismantle the connection.

Further, the mounting structure comprises two elastic buckles, and the two elastic buckles are located on two opposite sides of the dust barrel.

Further, the elastic buckle includes:

the elastic arm is arranged on the dust cylinder, and a convex part is arranged on the elastic arm;

the clamping jaw is arranged on the end cover, and a clamping groove matched and locked with the protruding portion is formed in the clamping jaw.

Further, the mounting structure includes:

the limiting bulge is arranged on the end cover;

the rotary buckle is arranged on the dust barrel and is pivoted with the dust barrel, the rotary buckle comprises a hook part and a biasing force part, and the biasing force part exerts a biasing force on the hook part to enable the hook part to be matched and locked with the limiting protrusion.

The utility model has the advantages that:

the polishing device provided by the utility model can fix the dust collecting box on the machine body by matching the second joint with the first joint, and the locking piece can lock and unlock the first joint and the second joint, thereby facilitating the installation and the disassembly; during the installation, connect the second to the direction rotation of locking, the guide groove of guide first retaining member entering spout, further rotate the second and connect the locking groove that makes first retaining member get into the spout, the locking groove plays limiting displacement to first retaining member, prevents first retaining member roll-off. When the first locking piece is detached, the first locking piece is guided to slide into the guide groove from the locking groove, and then slide out from the guide groove, so that the structure is simplified, and the assembly and disassembly efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a sanding machine according to the present invention;

FIG. 2 is a partial cross-sectional view of the sander provided in FIG. 1;

FIG. 3 is an exploded view of the cyclone dust collecting apparatus of the sanding machine of FIG. 1;

FIG. 4 is a schematic diagram of the separator provided in FIG. 3;

FIG. 5 is a bottom view of the separator of FIG. 4;

FIG. 6 is a cross-sectional view of the cyclone cartridge of FIG. 5;

FIG. 7 is a schematic structural view of the end cap of FIG. 3;

FIG. 8 is a schematic view of the construction of the dustcup of FIG. 3;

FIG. 9 is a schematic view of a sander including another cyclone dust collecting apparatus provided for utility model;

fig. 10 is a cross-sectional view of the sander provided in fig. 9;

fig. 11 is an enlarged view at a of fig. 10;

fig. 12 is a sectional view of the cyclone dust collecting apparatus of the sanding machine provided in fig. 10;

fig. 13 is an exploded view of the sander provided in fig. 9;

fig. 14 is an enlarged view at B of fig. 13;

figure 15 is an exploded view of the dust bin of figure 9;

figure 16 is a schematic view of another angular exploded view of the bin of figure 9.

In the figure:

10. a body; 11. a first joint; 111. a first locking member;

20. a base plate assembly;

30. a dust collecting box; 301. a dust inlet; 302. a cavity;

31. an end cap; 311. a second joint; 312. a chute; 3121. a guide groove; 3122. a locking groove; 313. a claw; 3131. a card slot; 314. a limiting bulge;

32. a dust cylinder; 321. a resilient arm; 3211. a boss portion; 322. rotating the buckle; 3220. a hook portion; 3221. a biasing force member; 3222. a rotating shaft;

33. a dust blocking member;

40. a separator;

41. a dust inlet;

42. a cyclone; 421. an inlet; 422. an outlet; 423. a guide member;

43. a mounting seat;

50. an auxiliary disengaging member.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The utility model discloses embodiment provides a grinding device to the grinder is the example. Referring to fig. 1, the main body of the sander at least comprises a body 10, a bottom plate assembly 20, a driving mechanism and a fan assembly. Wherein, a holding portion is formed at the top of the body 10 for a user to hold, and the driving mechanism and the fan assembly are accommodated in the body 10.

The bottom plate assembly 20 is used for fixing a grinding piece and realizing grinding and polishing functions. The base plate assembly 20 includes a base plate, one side of which near the body 10 is connected to the body 10 through a vibration bracket, and the other side of which is used for fixing a polishing member such as sand paper.

The driving mechanism is used for driving the bottom plate assembly 20 to move and comprises a motor, and an output shaft of the motor is in transmission connection with the bottom plate assembly 20, so that the bottom plate assembly 20 is driven to move, and the functions of grinding and polishing of the sander are achieved.

The fan assembly is used for forming a dust exhaust air path, a dust exhaust channel is arranged in the machine body 10, and the dust exhaust channel comprises a dust outlet arranged on one side of the machine body 10. When the polishing piece acts on a workpiece, dust can be generated, dust exhaust holes are formed in the abrasive paper and the bottom plate, air and the dust can be sucked into a dust exhaust channel in the machine body 10 through the dust exhaust holes, and dust exhaust airflow mixed with the dust flows out of the dust exhaust channel.

Referring to fig. 2 and 3, the sanding machine provided by the embodiment of the present invention further includes a cyclone dust collecting device, wherein the dust exhaust airflow flows out from the dust exhaust channel on the machine body 10 to enter the cyclone dust collecting device, and the cyclone dust collecting device separates air and dust and collects the dust in the cyclone dust collecting device.

Referring to fig. 2 and 3, the cyclone dust collecting apparatus according to the embodiment of the present invention includes a dust collecting box 30 and a separator 40, the dust collecting box 30 includes a dust inlet 301 and a cavity 302 formed by extending along a first direction, the dust inlet 301 is communicated with a dust outlet of a dust channel on a main body, and a dust exhaust air flow enters the cavity 302 through the dust inlet 301.

Referring to fig. 3, 7 and 8, the dust collecting box 30 includes an end cap 31 and a dust cylinder 32 detachably connected, the end cap 31 is detachably connected to the body 10, a cavity 302 is formed in the dust cylinder 32, and a dust inlet 301 is formed in the end cap 31. The end cover 31 and the dust barrel 32 of the dust collection box 30 are detachably arranged, so that the dust can be poured conveniently by opening the end cover. Specifically, as shown in fig. 9 and 10, the main body 10 of the main body includes a first joint 11, the first joint 11 extends to form a tubular shape, and an opening of the tubular first joint 11 is formed with a dust outlet; as shown in fig. 7, 9 and 10, the dust box 30 includes a second connector 311, and as shown in fig. 2, an opening end of the second connector 311 is formed with a dust inlet 301.

The separator 40 of the present invention comprises a mounting seat 43 and a cyclone 42, the mounting seat 43 is disposed to be connected to the end cover 31, the mounting seat 43 is provided with a dust inlet 41, the dust inlet 41 is communicated with the dust inlet 301, and the cyclone 42 is disposed in the dust collecting box 30 along the second direction.

Two cyclones 42 are arranged, the two cyclones 42 are arranged in parallel, and both cyclones 42 are connected with the mounting seat 43. The cyclone cylinder 42 comprises a separating cylinder arranged at the rear end (the rear end refers to the right side in fig. 3, i.e. the end far away from the main machine) of the mounting seat 43, and an air outlet cylinder arranged at the front end (the front end refers to the left side in fig. 3, i.e. the end close to the main machine) of the mounting seat 43, the rear end of the separating cylinder is provided with an inlet 421 for the dust exhaust airflow to enter, the inlet 421 is located in the cavity 302, the front end of the air outlet cylinder is provided with an outlet 422 for the dust exhaust airflow to exhaust, and the outlet 422 is used for communicating with the outside of the dust collecting box. The end cover 31 is provided with two through holes corresponding to the air outlet cylinder, and the air outlet cylinder of the cyclone cylinder 42 passes through the through holes on the end cover 31 and is communicated with the outside of the dust collecting box 30.

The air with dust enters the cavity 302 from the dust inlet 301 and the dust inlet 41, the dust rotates around the periphery of the separating cylinder and then is separated and collected in the dust collecting box 30, and finally the exhaust air enters the cyclone cylinder 42 through the inlet 421 of the cyclone cylinder 42 and is discharged out of the dust collecting box 30 through the outlet 422 of the air outlet cylinder.

Referring to fig. 2, in the present embodiment, the first direction is an axial direction of the dust inlet 301, the second direction is an axial direction of the cyclone cylinder 42, and the second direction is disposed at an angle with respect to the first direction, specifically, the second direction is disposed at an angle with respect to the first direction in a vertical plane, and it can also be understood that the second direction is disposed at an angle with respect to the first direction in a plane perpendicular to the bottom wall of the dust collecting box 30. Thereby, the inlet 421 of the cyclone is higher than the dust inlet 41, and the outlet 422 of the cyclone 42 is lower than the dust inlet 41, so that the cyclone 42 is obliquely arranged in the dust collecting box 30.

Specifically, the angle between the first direction and the second direction in the vertical plane is equal to or greater than 15 ° and equal to or less than 45 °, the first direction is represented by O1, the second direction is represented by O2, and α represents the angle between the first direction and the second direction in fig. 2.

On one hand, the inclination of the cyclone cylinder 42 within the above-mentioned angle is advantageous for reducing the axial size of the dust box 30 (i.e., the size of the dust box in the front-rear direction), so that the dust box 30 is smaller in volume; on the other hand, since the inlet 421 of the cyclone cylinder 42 is raised, the effective dust collecting space below the inlet 421 is increased, the dust collecting efficiency is higher, and the dust falling frequency of the user is reduced. Therefore, the effective dust-collecting space is ensured on the basis of reducing the volume of the dust-collecting box, and the dust-collecting space is prevented from being reduced.

Referring to fig. 6, in the embodiment of the present invention, the outlet 422 of the cyclone cylinder 42 is disposed away from the main machine, specifically, the cyclone cylinder 42 of the embodiment of the present invention includes a guide 423 disposed at the outlet 422, and the guide 423 guides the air outlet direction of the outlet 422 to deviate from the direction away from the main machine relative to the second direction. The guide 423 changes the air outlet direction at the outlet 422 to prevent residual dust carried in the exhaust air flow from being sprayed and accumulated on the main body 10 of the main machine.

Wherein, the air outlet 422 is disposed away from the main machine, specifically, may be disposed toward the operation table, or may be disposed toward the rear end of the machine body 10, or the outlet 422 is disposed obliquely with respect to the bottom plate assembly 20 so that the outlet 422 discharges the air flow toward the rear lower part of the machine body.

Since the outlet 422 of the cyclone 42 is disposed away from the main unit, the dust exhaust stream, which may still have a small amount of dust, is prevented from being blown onto the main unit body 10, thereby preventing dust from accumulating on the main unit body and ensuring the clean and beautiful appearance of the main unit.

Referring to fig. 2, the vertical distance between the top wall and the bottom wall of the dust collecting box 30 in the embodiment of the present invention is H, the vertical distance between the center of the inlet 421 of the cyclone cylinder 42 and the bottom wall of the dust collecting box 30 is H, H and H are shown in fig. 2, wherein H/H is greater than or equal to 0.5 and less than or equal to 0.9, and H/H is 0.5, 0.6 or 0.8 in the embodiment. Specifically, the central position of the inlet 421 refers to a position where the inlet 421 intersects with the axis of the cyclone, so that the inlet 421 is as close as possible to the top of the dust collecting box 30, and the position of the inlet 421 is higher than the middle position of the dust collecting box 30, so that the effective dust collecting space below the inlet 421 is increased, the dust collecting efficiency is higher, and the dust falling frequency of a user is reduced.

Referring to fig. 4 to 6, the separator 40 includes two cyclones 42, the two cyclones 42 share one dust inlet 41, and each cyclone 42 is provided with an inlet 421 and an outlet 422.

Referring to fig. 8, the dust box 30 further includes a dust blocking member 33, and the dust blocking member 33 is disposed on the bottom wall of the opening of the dust cylinder 32. The dust guard 33 can prevent dust in the dustcup 32 from spilling when the end cap 31 is disengaged from the dustcup 32. The dust blocking member 33 may be a plastic member or a gasket, and may be integrally formed with the dust collecting box 30, or may be separately formed and then installed in the dust collecting box 30, which is not limited herein.

Referring to fig. 3, in which the end cap 31 and the dust cylinder 32 of the dust collecting box 30 according to the embodiment of the present invention are detachably connected, specifically, the sander further includes a mounting structure disposed between the end cap 31 and the dust cylinder 32, the dust cylinder 32 and the end cap 31 are detachably connected through the mounting structure, wherein the mounting structure may be a snap connection structure.

In this embodiment, the mounting structure includes two resilient snap fasteners located on opposite sides of the dustcup 32. When the dust collector is installed, the end cover 31 is inserted into the dust barrel 32, so that the elastic buckle realizes locking. The elastic buckle is convenient to mount and dismount.

Referring to fig. 7 and 8, in particular, in this embodiment, the elastic buckles are disposed on the upper and lower sides of the dust collecting box 30, the elastic buckles include elastic arms 321 and claws 313, a pair of elastic arms 321 is disposed on the upper and lower sides of the dust cylinder 32, each elastic arm 321 is provided with a protrusion 3211, a pair of claws 313 is correspondingly disposed on the upper and lower sides of the end cap 31, and each claw 313 is provided with a locking slot 3131 which is locked with the protrusion 3211. When the end cap is installed, the claw 313 is inserted to the outside of the elastic arm 321, the elastic arm 321 is compressed and deformed toward the inside of the dust box 30 as the claw 313 is inserted, and when the claw 313 is installed to a predetermined position, the protrusion 3211 on the outside of the elastic arm 321 enters the catching groove 3131 on the inside of the claw 313, and at this time, the elastic arm is kept in a locked state with the claw 313 by its own elastic biasing force, so that the claw 313 cannot be disengaged from the dust cylinder 32. When the end cap is opened, the free end of the elastic arm 321 is pressed, and the elastic arm is compressed towards the inner side of the dust collection box 30, so that the convex part 3211 on the elastic arm is separated from the clamping groove 3131 on the inner side of the clamping claw 313, and the end cap 31 is allowed to be opened and separated from the dust cylinder 32.

Referring to fig. 9 to 14, the dust box 30 according to the embodiment of the present invention is detachably connected to the body 10. The second connector 311 of the dust box 30 has a locked state in which it is engaged and locked with the first connector 11 of the body 10 and an unlocked state in which it is disengaged. When the second connector 311 is locked with the first connector 11, the dust inlet 301 is communicated with the dust outlet. For example, the first connector 11 and the second connector 311 may be locked by screwing, or may be locked by clipping.

In the embodiment, the first connector 11 and the second connector 311 are locked by a locking member. The locking part comprises a first locking part and a second locking part, the first locking part is arranged on one joint, and the first locking part radially protrudes out of the joint; the second locking member is disposed around the other joint and includes a sliding groove adapted for the first locking member to enter and lock.

Referring to fig. 13 to 14, the locking member of this embodiment includes a first locking member 111 and a second locking member, the first locking member 111 is provided on the first joint 11, and specifically, the first locking member 111 is a projection provided to project radially from the first joint 11; the second locking member is disposed on the second joint 311, and includes a sliding groove 312 adapted to be protruded into and locked with the second joint, the sliding groove 312 includes a guiding groove 3121 and a locking groove 3122, the guiding groove 3121 is disposed at the outer circumference of the second joint 311 in an inclined manner with respect to the axis of the second joint 311, the locking groove 3122 is disposed at the end of the guiding groove 3121 and limits the first locking member 111 to be separated from the locking groove 3122 and enter the guiding groove 3121, wherein the guiding groove 3121 in this embodiment is an arc-shaped groove, and the guiding groove 3121 is smoothly connected with the locking groove 3122; therefore, when the locking device is locked, the first locking piece 111 can easily slide into the locking groove 3122, the convenient operation of a user is facilitated, and the operation hand feeling of the user is improved. Of course, the positions of the first locking member and the second locking member may be interchanged.

In the present embodiment, two protrusions and two sliding grooves 312 are respectively provided, the two protrusions are symmetrically arranged about the axis of the first joint 11, and the two sliding grooves 312 are respectively provided on opposite sides of the outer periphery of the second joint 311.

As shown in fig. 11 and 12, the sanding machine further includes an auxiliary separating member 50, and the auxiliary separating member 50 is sandwiched between the first joint 11 and the second joint 311, and has a biasing force applied to the second joint 311 to separate the second joint from the first joint 11. When the second connector 311 is locked with the first connector 11 in a locked state, the first connector 11 and the second connector 311 press the auxiliary release member 50 to be elastically deformed; when the second joint 311 is disengaged relative to the first joint 11, the auxiliary disengaging component 50 generates pushing force on the second joint 311 to assist the disengagement thereof, so as to realize quick disassembly. On the other hand, the auxiliary release member 50 may also perform an auxiliary sealing function on the first joint 11 and the second joint 311 to ensure the relative sealing performance of the first joint and the second joint 311.

The utility model discloses supplementary part 50 that breaks away from in the embodiment specifically is the cushion, and wherein the second connects 311 cover to be located and set up on the first joint 11, consequently fits with a contraceptive ring at the inner wall that the second connects 311 and is equipped with the recess that is suitable for the installation cushion, specifically, connects 311 inboard position department that corresponds with the axial tip of first joint 11 to be provided with the recess that is used for installing the cushion at the second. Referring to fig. 11, which is a schematic view showing the auxiliary release member 50 in a compressed state, when the dust box 30 is mounted and fixed to the body, the first connector 11 presses and compresses the elastic pad; referring to fig. 12, which shows the auxiliary release member 50 in a non-compressed state, the elastic pad is restored to a free state after the dust box 30 is removed from the body 10.

When the dust collection box is installed, the second joint 311 is rotated towards the locking direction, the guide protrusion enters the guide groove 3121 of the sliding groove 312, the second joint 311 is further rotated to enable the protrusion to enter the locking groove 3122 of the sliding groove 312, the locking groove 3122 is arranged at the tail end of the guide groove 3121 and forms an included angle with the guide groove 3121, the locking groove 3122 plays a limiting role for the protrusion, the protrusion is prevented from sliding out along the guide groove 3121, and the first joint 11 and the second joint 311 extrude the auxiliary separation part 50 to enable the auxiliary separation part to generate elastic deformation during locking.

When the dust box 30 is disassembled, the guide protrusion slides into the guide groove 3121 from the locking groove 3122, and the auxiliary separation member 50 is restored to be deformed to provide an elastic force for assisting unlocking, so that the protrusion slides out of the guide groove 3121 rapidly, thereby realizing rapid disassembly. The dust collecting box 30 is matched with the machine body 10 through the first joint 11 and the second joint 311, and can be quickly installed and detached in a rotating mode, so that the installation is convenient and the time is saved; the auxiliary disengaging part 50 is used for providing elastic force for assisting the second connector 311 to disengage from the first connector 11 when unlocking, so that the second connector 311 and the first connector 11 can be quickly bounced apart, and the disassembling efficiency is improved.

The outer peripheral surface of the first joint 11 is annularly provided with a groove for installing a sealing ring, the sealing ring is installed in the groove and clamped between the inner wall of the second joint 311 and the outer wall of the first joint 11, and the sealing ring plays a main sealing role.

In summary, the cyclone cylinder 42 is obliquely arranged in the dust collecting box 30, so that the axial size of the dust collecting box 30 can be reduced, and the size of the dust collecting box 30 is smaller; the dust flows upward from the dust inlet 41 and is accumulated in the dust collecting box 30 at the inlet 421, and the effective dust collecting space below the end of the cyclone cylinder 42 is increased due to the raised inlet 421 of the cyclone cylinder, so that the dust collecting efficiency is higher on the basis of not increasing the volume of the dust collecting box, and the dust falling frequency of a user is reduced.

As shown in fig. 15 and 16, as an alternative embodiment, the mounting structure between the dust box 30 and the body 10 includes a rotation catch 322 and a stopper protrusion 314. Specifically, the position-limiting protrusion 314 is disposed on the end cover 31, the rotating buckle 322 is disposed on the dust cylinder 32, the rotating buckle 322 is pivotally connected to the dust cylinder 32 through the rotating shaft 3222, the rotating buckle 322 includes a hook 3220 and a biasing force member 3221, the biasing force member 3221 applies a biasing force to the hook 3220 to make the hook 3220 and the position-limiting protrusion 314 cooperate and lock with each other, wherein the biasing force member 3221 is a spring, and the spring and the position-limiting protrusion 314 are disposed on two sides of the rotating shaft 3222, respectively.

When the dust collector is installed, one end of the rotary buckle 322 is pressed to rotate the rotary buckle 322 relative to the dust barrel 32, the end cover 31 is buckled at the opening of the dust barrel 32, the limiting protrusion 314 is positioned below the hook portion 3220 of the rotary buckle 322, the rotary buckle 322 is released, the hook portion 3220 is clamped with the limiting protrusion 314, and the rotary buckle 322 is in a locking state due to the biasing force applied by the biasing force member 3221 to the hook portion 3220 to enable the hook portion 3220 to be matched and locked with the limiting protrusion 314.

Wherein only need have one rotatory buckle 322 in this embodiment can realize locking between end cover 31 and the dirt section of thick bamboo 32, through the mode of unilateral joint, the structure is simpler, more does benefit to installation and dismantlement. Of course, two oppositely disposed rotating buckles 322 may be provided, which is not limited herein.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. An abrading device comprising:

the dust collector comprises a machine body, a dust collecting device and a dust collecting device, wherein the machine body comprises a first joint, and the first joint comprises a dust outlet;

the bottom plate assembly comprises a bottom plate and a grinding piece arranged on the bottom plate;

the driving mechanism drives the bottom plate assembly to move, and the fan assembly is used for forming a dust exhaust air path moving towards the dust outlet;

the dust collecting box comprises a second connector, the second connector comprises a dust inlet, and the second connector is detachably connected with the first connector through a locking piece;

characterized in that, the retaining member includes:

the first locking piece is arranged on one joint, and the first locking piece radially protrudes out of the joint;

the second retaining member is arranged on the periphery of the other joint and comprises a sliding groove suitable for the first retaining member to enter and be locked, the sliding groove comprises a guide groove and a locking groove, the guide groove is obliquely arranged relative to the axis of the other joint, and the locking groove is arranged at the tail end of the guide groove and limits the first retaining member to be separated from the locking groove.

2. The polishing apparatus as set forth in claim 1, further comprising an auxiliary release member interposed between said first joint and said second joint, having a biasing force to bias said second joint away from said first joint.

3. The polishing apparatus as claimed in claim 2, wherein the second joint is disposed on the first joint, the auxiliary release member is an elastic pad, and the elastic pad is engaged with an inner wall of the second joint.

4. The sharpening device of claim 1 or claim 2 wherein said guide slot is an arcuate slot and said first retaining member is a projection disposed to project radially beyond said first tab; the bulges and the sliding grooves are respectively provided with two, the bulges are symmetrically arranged about the axis of the first joint, and the sliding grooves are respectively arranged on two opposite sides of the periphery of the second joint.

5. The polishing apparatus as recited in claim 1, wherein said dust collecting case further comprises an end cap and a dust canister detachably connected, said second connector being connected to said end cap, said dust canister defining a cavity therein, and a dust exhaust air flow entering said cavity through said dust inlet.

6. The polishing apparatus as set forth in claim 5, wherein the dust box further comprises a dust blocking member provided on a bottom wall of the opening of the dust cylinder.

7. The sanding device of claim 5, further comprising a mounting structure disposed between the end cap and the dustcup, the dustcup and the end cap being removably connected by the mounting structure.

8. The sanding device of claim 7, wherein the mounting structure includes two resilient snaps, the two resilient snaps being located on opposite sides of the dustcup.

9. The sharpening device of claim 8, wherein said resilient catch comprises:

the elastic arm is arranged on the dust cylinder, and a convex part is arranged on the elastic arm;

the clamping jaw is arranged on the end cover, and a clamping groove matched and locked with the protruding portion is formed in the clamping jaw.

10. The abrading device of claim 7, wherein the mounting structure comprises:

the limiting bulge is arranged on the end cover;

the rotary buckle is arranged on the dust barrel and is pivoted with the dust barrel, the rotary buckle comprises a hook part and a biasing force part, and the biasing force part exerts a biasing force on the hook part to enable the hook part to be matched and locked with the limiting protrusion.

Images