WO2022001774A1 - Outil de polissage - Google Patents

Outil de polissage Download PDF

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Publication number
WO2022001774A1
WO2022001774A1 PCT/CN2021/101766 CN2021101766W WO2022001774A1 WO 2022001774 A1 WO2022001774 A1 WO 2022001774A1 CN 2021101766 W CN2021101766 W CN 2021101766W WO 2022001774 A1 WO2022001774 A1 WO 2022001774A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
casing
bottom plate
floating
assembly
Prior art date
Application number
PCT/CN2021/101766
Other languages
English (en)
Chinese (zh)
Inventor
徐中全
石灵建
刘天亮
傅明潭
张丽松
邢黎
Original Assignee
南京德朔实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202121256254.1U external-priority patent/CN216463774U/zh
Application filed by 南京德朔实业有限公司 filed Critical 南京德朔实业有限公司
Priority to CA3186289A priority Critical patent/CA3186289A1/fr
Priority to EP21831767.5A priority patent/EP4140646A4/fr
Publication of WO2022001774A1 publication Critical patent/WO2022001774A1/fr
Priority to US17/987,249 priority patent/US20230084672A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/105—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with oscillating tools

Definitions

  • the present application relates to the technical field of electric tools, for example, to a grinding tool.
  • Grinding tool is a commonly used power tool, which can be used to polish and polish the surface of wood, plastic, stone, metal and other materials through the swing of the bottom plate.
  • the hand-held grinding tool should usually have a small volume and self-weight to meet the user's expectation and experience of convenient operation.
  • a large amount of dust is usually generated.
  • most of the existing grinding tools are equipped with a dust collecting device for collecting the dust generated during the grinding process.
  • the present application provides a grinding tool that satisfies the dust collection function while making the whole machine more compact and is convenient for users to operate flexibly.
  • An embodiment provides a grinding tool, including: a base plate assembly, including a base plate for installing a grinding piece; a casing assembly, disposed on the base plate, including a body casing; a driving mechanism, disposed in the body casing, driving The mechanism drives the base plate assembly to move; the fan assembly is installed to the driving mechanism; the support frame is arranged between the body shell and the base plate; wherein: the support frame includes: a support seat, a central release part and a floating connecting arm, and the support seat is arranged on the machine Between the body shell and the bottom plate, the central release member is directly or indirectly fixedly connected to the bottom plate, and the floating connecting arm is connected between the central releasing member and the support seat.
  • the floating connecting arm allows the support frame to be subjected to axial and/or radial force when The support seat and the central release part move relatively;
  • the casing assembly also includes a functional casing, a hollow cavity is formed in the functional casing, and the functional casing is provided with an inlet and an outlet communicating with the cavity, and the inlet is connected to the dust discharge of the grinding tool.
  • the channel is connected, the outlet is configured to discharge the gas in the cavity, and the fan assembly is used to form a dust exhaust air path moving toward the inlet;
  • the functional casing is arranged on one side of the fuselage shell and its projection to the plane where the base plate assembly is located is located on the base plate Inside; the ratio of the projected area of the functional chassis to the bottom plate and the area of the bottom plate is greater than or equal to 0.15 and less than or equal to 0.95.
  • the ratio of the projected area of the functional chassis to the bottom plate to the area of the bottom plate is greater than or equal to 0.5 and less than or equal to 0.95.
  • the axial height of the functional housing is greater than or equal to 0.3 and less than or equal to 0.85.
  • the functional casing includes an auxiliary holding portion, and the auxiliary holding portion is located at the top end of the functional casing; the auxiliary holding portion is an inwardly indented depression on the functional casing.
  • the functional casing is snap-connected to the fuselage casing, and the functional casing is further provided with an auxiliary fixing member matched with the bottom plate.
  • the functional casing includes an outer casing, which is disposed on the periphery of the body casing and cooperates with the outer casing to form a cavity.
  • the functional casing includes an outer casing and an inner casing, the outer casing is enclosed outside the inner casing and a cavity is formed between the inner casing, and the inner casing is disposed outside the body casing.
  • an opening is formed between the outer casing and the inner casing, and the functional casing further includes a cover plate, and the cover plate covers the opening.
  • a filter element and a filter element holder for installing the filter element are provided in the functional housing, and the filter element is arranged on the moving path of the dust exhaust air passage.
  • a dust discharge assembly is further included, the dust discharge assembly is disposed between the bottom plate assembly and the functional casing, and a dust discharge channel is formed in the dust discharge assembly.
  • the dust discharge assembly includes: a guide portion and a conveying bracket, the guide portion is provided with a dust inlet, the guide portion is arranged on the bottom plate assembly and communicates with the bottom dust suction port on the bottom plate assembly, and the conveying bracket and the guide portion
  • the dust inlet is connected with the dust inlet
  • the conveying bracket is provided with a dust outlet
  • the dust outlet is connected with the inlet.
  • the conveying support is at least partially arranged in the body casing, the output support is detachably connected to the body housing, and the conveying support can be detached from the body housing.
  • a DC power supply is further included, and the driving mechanism is arranged between the DC power supply and the functional casing.
  • a grinding tool comprising: a bottom plate assembly, including a bottom plate for installing a grinding member; a casing assembly, disposed on the bottom plate, including a body casing; a driving mechanism, configured to drive the bottom plate assembly to move; a support The frame is arranged between the fuselage shell and the bottom plate; wherein, the support frame includes: a support base, which is arranged between the fuselage shell and the bottom plate; a central release part, which is directly or indirectly fixedly connected to the bottom plate; and a floating connecting arm, Connected between the central release piece and the support base, the floating connecting arm allows the support base to move relative to the central release piece when the support frame is subjected to an axial and/or radial force.
  • the central release member is a cylinder extending in a direction perpendicular or inclined to the support base.
  • the central release member is provided with screw holes, and the central release member is fixedly connected to the bottom plate through screws.
  • the arm length of the floating link arm is greater than the axial height of the support base.
  • the support base supports the fuselage shell, one end of the floating connecting arm is connected to the upper end of the central release member, and the other end is connected to the support base.
  • the support base supports the fuselage shell, and the floating connecting arm is bent and connected to the support base and the upper end of the central release member.
  • a mounting seat and a floating support arm are further included, the mounting seat and the support seat are arranged at an axial interval, the mounting seat is fixedly connected with the bottom plate, and the mounting seat is connected to the central release member through the floating support arm.
  • the floating connecting arm is connected to the lower end of the support base and the central release piece, and the floating support arm is connected to the upper end of the mounting base and the central release piece.
  • the floating connecting arms and the floating supporting arms are staggered and spaced apart.
  • the support frame further includes an escape portion that provides space for the movement of the floating connecting arm, the escape portion includes a first through hole provided on the support seat, and a second through hole provided on the mounting seat, the second The through hole and the first through hole have parallel axes or the second through hole and the first through hole are arranged coaxially.
  • the floating connecting arm is connected to the inner edge of the first through hole, and the floating support arm is connected to the inner edge of the second through hole.
  • the floating connecting arm includes a plurality of bent sections extending in the radial direction of the central release member, and the floating support arm includes a plurality of bent sections extending in the radial direction of the central release member.
  • the support frame is integrally formed.
  • the axial height of the support frame is greater than or equal to 6 mm and less than or equal to 20 mm.
  • a grinding tool comprising: a bottom plate assembly, including a bottom plate for installing a grinding member; a casing assembly, disposed on the bottom plate, including a body casing; a driving mechanism, configured to drive the bottom plate assembly to move; a support
  • the support frame is arranged between the fuselage shell and the bottom plate; wherein, the support frame includes: a support seat, the upper end of the support seat abuts against the fuselage shell; a center release part, the center release part is directly or indirectly fixedly connected to the bottom plate; and
  • the floating connecting arm is connected between the central release member and the support base, and the ratio of the axial stiffness to the radial stiffness of the support frame is greater than or equal to 0.67 and less than or equal to 100.
  • the central release member is provided with screw holes, and the central release member is fixedly connected to the bottom plate through screws.
  • the floating connecting arms and the floating supporting arms are staggered and spaced apart.
  • the floating connecting arm includes a plurality of bent sections extending in the radial direction of the central release member, and the floating support arm includes a plurality of bent sections extending in the radial direction of the central release member.
  • the support frame is integrally formed.
  • the axial height of the support frame is greater than or equal to 6 mm and less than or equal to 20 mm.
  • a grinding tool including: a bottom plate assembly, including a bottom plate for installing a grinding member; a casing assembly, disposed on the bottom plate, including a body casing; a driving mechanism, configured to drive the bottom plate assembly to move; a support The frame is arranged between the fuselage shell and the bottom plate; wherein, the support frame includes: a support seat, the upper end of which abuts against the fuselage shell; a center release part, the center release part is directly or indirectly fixedly connected to the bottom plate; and The floating connecting arm is connected between the central release member and the support base, and the ratio of the axial stiffness of the support frame to the height of the support frame is greater than or equal to 1N/mm 2 and less than or equal to 83.3N/mm 2 .
  • the central release member is provided with screw holes, and the central release member is fixedly connected to the bottom plate through screws.
  • the support frame further includes: a mounting seat, disposed axially spaced from the support seat, the mounting seat is connected to the bottom plate; and a floating support arm, which is connected to the central release member and the mounting seat.
  • the floating connecting arm is connected to the support seat and the lower end of the column, and the floating support arm is connected to the mounting seat and the upper end of the column.
  • the floating connecting arms and the floating supporting arms are staggered and spaced apart.
  • the floating connecting arm includes a plurality of bent sections extending in the radial direction of the central release member, and the floating support arm includes a plurality of bent sections extending in the radial direction of the central release member.
  • the support frame is integrally formed.
  • the axial height of the support frame is greater than or equal to 6 mm and less than or equal to 20 mm.
  • a grinding tool including: a bottom plate assembly, including a bottom plate for installing a grinding member; a casing assembly, disposed on the bottom plate, including a body casing; a driving mechanism, disposed in the body casing, set
  • a bottom plate assembly including a bottom plate for installing a grinding member
  • a casing assembly disposed on the bottom plate, including a body casing
  • a driving mechanism disposed in the body casing, set
  • the base plate assembly includes an output shaft, the output shaft is supported on the base plate through a support member, and the support member rotates around the rotation axis;
  • the fan assembly is connected with the driving mechanism;
  • the support frame is arranged between the fuselage shell and the base plate;
  • the support frame includes: a support seat, a central release member and a floating connecting arm, the supporting seat is arranged between the fuselage shell and the bottom plate, the central releasing member is directly or indirectly fixedly connected to the bottom plate, and the floating connecting arm is connected to the central releasing member and the bottom plate
  • the floating connecting arm allows the support base to move relative to the central release member when the support frame is subjected to an axial and/or radial force;
  • the casing assembly also includes a functional casing, and a hollow cavity is formed in the functional casing , the functional casing is provided with an inlet and an outlet that communicate with the cavity, the inlet is communicated with the dust exhaust channel of the grinding tool, the outlet is configured to discharge the gas in the cavity, and the fan assembly is used to form a dust exhaust air path that moves toward the inlet;
  • the bottom plate There is an initial centroid line passing through its initial mass center, the initial centroid line is perpendicular to the bottom plate, and the rotation axis is set farther from the functional casing than the initial centroid line;
  • the grinding tool also includes a centroid transfer piece, which is arranged on the bottom plate to make the bottom plate The centroid of is shifted to the corrected centroid line, and the corrected centroid line coincides with the rotation axis.
  • the distance between the corrected centroid line and the initial centroid line is greater than or equal to 5 mm and less than or equal to 35 mm.
  • the grinding tool of the present application by reserving a part of the main body casing for accommodating dust, there is no need to provide additional dust collection components, and by reserving part of the main body casing for accommodating dust, the function of dust collection and dust collection is satisfied.
  • the vacuum cleaner On the basis of the vacuum cleaner, the operation deflection caused by the large volume of the vacuuming container is avoided, the flexibility of operation is improved, and the user experience is improved.
  • Fig. 1 is the structural representation of the grinding tool of the present application
  • Fig. 2 is the assembly schematic diagram of the grinding tool shown in Fig. 1;
  • Fig. 3 is the assembly schematic diagram of the functional casing shown in Fig. 1;
  • Fig. 4 is the structural representation of the functional casing shown in Fig. 3;
  • Fig. 5 is the structural schematic diagram of another angle of the functional casing described in Fig. 3;
  • Fig. 6 is the structural representation of the grinding tool shown in Fig. 1 after removing the functional casing;
  • FIG. 7 is a schematic structural diagram of the grinding tool body casing shown in FIG. 6 after opening;
  • Fig. 8 is the assembly schematic diagram of the dust exhaust assembly and the bottom plate assembly of the present application.
  • Fig. 9 is the assembly diagram of the base plate assembly of the present application and the motor output shaft;
  • Fig. 10 is A-A sectional view shown in Fig. 9;
  • Figure 11 is a schematic diagram of the centroid migration shown in Figure 10.
  • Fig. 12 is the assembly schematic diagram of the support frame and the base plate assembly of the present application.
  • FIG. 13 is a schematic structural diagram of a support frame according to an embodiment of the present application.
  • Figure 14 is a top view of the support frame shown in Figure 13;
  • Fig. 15 is the B-B sectional view described in Fig. 14;
  • FIG. 16 is a schematic structural diagram of a support frame according to another embodiment of the present application.
  • Figure 17 is a front view of the support frame shown in Figure 16;
  • Figure 19 is an exploded schematic view of the grinding tool in Figure 18 of the present application from another perspective;
  • FIG. 21 is an exploded schematic view of the dust extraction assembly of the grinding tool in FIG. 18 of the present application.
  • the sanding tool 100 in this embodiment of the present application is a sanding machine, such as a flat sander that can be held by a user with one hand or both hands for operation. machine.
  • the grinding tool 100 may be round sand, triangular sand, square sand, special-shaped sand, etc., and only suitable grinding tools that meet the technical solutions of the present application are within the protection scope of the present application.
  • the grinding tool 100 includes a base plate assembly 200 , a casing assembly 300 , a driving mechanism 400 , a fan assembly 800 and a power source 500 .
  • the casing assembly 300 includes a body casing 310 and a functional casing 320 , and the driving mechanism 400 and the fan assembly are both disposed in the body casing 310 .
  • the power source 500 may be a DC power source, such as a battery pack, or an AC power source.
  • the driving mechanism 400 is provided between the DC power supply and the functional housing 320 .
  • the base plate assembly 200 includes a base plate 210 and a grinding member (not shown in the figures) fixed on the base plate 210 .
  • the sides are provided with sanding pieces, which may be sandpaper or other types of abrasive or polishing pieces, which may be removably attached to the bottom in a conventional manner.
  • the bottom plate 210 is provided with a bottom plate dust suction port 210a for inhaling the dust generated in the operation.
  • the driving mechanism 400 is configured to drive the bottom plate assembly 200 to move.
  • the driving mechanism 400 includes a motor and an output shaft 410 connected to the motor.
  • the fan assembly 800 is mounted on the output shaft 410 and is driven and rotated by the output shaft 410.
  • One end of the output shaft 410 is connected to the motor, and the other end is connected to the base plate.
  • the assembly 200 is connected, and the driving mechanism 400 and the fan assembly 800 are both disposed in the fuselage casing 310 .
  • the driving mechanism 400 may further include a transmission assembly disposed between the motor shaft and the output shaft 420 , wherein the transmission assembly may be any suitable transmission mechanism, such as gear transmission, belt transmission, etc., which will not be repeated here. As shown in FIG.
  • a support member 420 is also connected to the end of the output shaft 410 .
  • the support 420 of the embodiment of the present application is an eccentric bearing, which is installed in the base plate assembly 200, and the motor rotates around the motor axis 411 to drive the eccentric bearing to rotate, thereby driving the base plate 210 to perform eccentric motion on the surface of the workpiece, and at the same time, in order to balance the eccentric motion process
  • the grinding tool 100 of the embodiment of the present application is further provided with a counterweight, wherein the counterweight can be arranged on the fan assembly 800 or on the base plate assembly 200 .
  • the support member 420 in the embodiment of the present application rotates around a rotation axis 421 , wherein the rotation axis 421 and the motor axis 411 are arranged in parallel and spaced apart.
  • the base plate 210 in the embodiment of the present application has an initial centroid line 211 that is perpendicular to the plane of the base plate 210 and passes through the initial mass center of the base plate 210 , wherein the initial centroid line 211 means that no centroid transfer member 43 is provided on the base plate 210 The centroid line of the bottom plate 210 at the time.
  • the support member 420 is moved backward on the base plate 210 (the backward movement refers to the rightward movement in FIG. 10 and FIG. 11 ), so that the drive mechanism 400 (including the motor, fan, etc.) connected to the drive mechanism 400 (including the motor, fan, etc.) is integrally
  • the rearward movement reduces the space occupied by the body casing 310 on the bottom plate 210 , that is, more space is reserved on the left side of the bottom plate 210 in FIG. 10 , in other words, more space is reserved for the functional casing 320 , thereby increasing the volume of the functional housing 320 . Therefore, the rotation axis 421 in the embodiment of the present application is offset from the initial mass center line 211 , that is, the rotation axis 421 does not pass through the initial mass center of the base plate 210 .
  • the grinding tool 100 in the embodiment of the present application further includes a centroid transfer member 430 , and the centroid transfer member 430 is disposed on the rear side of the base plate 210 to make the centroid of the base plate 210 migrate to the corrected centroid line
  • the corrected centroid line 212 coincides with the rotation axis 421, and the corrected centroid line 212 is farther away from the functional casing 320 than the initial centroid line 211.
  • the centroid transfer member 430 is arranged to make the centroid of the bottom plate 210 move away from the functional casing.
  • One side of 320 is displaced and coincides with the axis of rotation 421 .
  • the rotation axis 421 is disposed away from the functional housing 320 compared to the initial centroid line 211 , that is, the rotation axis 421 of the present application is disposed backward relative to the initial centroid line 211 (as shown on the right in FIG. 11 , the rear side ).
  • the distance between the corrected centroid line 212 and the initial centroid line 211 is greater than or equal to 5 mm and less than or equal to 35 mm, that is, the rotation axis 421 is moved backward by 5 mm to 35 mm compared with the initial centroid line 211 .
  • the transfer member 430 moves the centroid line of the bottom plate 210 back by 7 mm to the position where the centroid line 212 is corrected, and can also be moved back by 10 mm, 15 mm or 20 mm.
  • the corrected centroid line 212 refers to the centroid line of the bottom plate 210 after the centroid transfer member 430 is provided on the bottom plate 210 .
  • the centroid transfer member 430 in the embodiment of the present application is disposed in the bottom plate 210 , an installation groove is provided on the bottom plate 210 , and the centroid transfer member 430 is clamped in the installation groove, thereby avoiding the centroid transfer member 430
  • the protruding bottom plate 210 is provided, wherein the centroid transfer member 430 may be a metal member or a non-metal member, which is not limited herein.
  • the bottom plate 210 may not be provided with an installation groove for installing the centroid transfer member 430 , and the centroid transfer member 430 may be directly adhered and fixed on the bottom plate 210 .
  • the center of mass migration member 430 is provided to compensate for the rotation
  • the offset between the axis 421 and the centroid line of the bottom plate 210 ensures that the corrected centroid line 212 of the bottom plate 210 is coincident with the rotation axis 421, so that the bottom plate 210 is supported on its center of mass to move, ensuring the uniform movement of the bottom plate 210 and avoiding the occurrence of the bottom plate 210 jumping and vibration and other issues.
  • the functional case 320 is connected to the base plate assembly 200 and/or the body case 310 . As shown in FIG. 1 and FIG. 2 , the projection of the functional housing 320 to the plane where the base plate assembly 200 is located is substantially located in the base plate 210 .
  • the functional casing 320 By locating the projection of the functional casing 320 on the bottom plate assembly 200 in the bottom plate 210 , it is possible to avoid the uncoordinated appearance of the whole machine caused by the excessively large size of the functional casing 320 , and avoid user operations caused by the excessively large volume. Inconvenient, the functional casing can be better integrated into the overall casing; on the basis of ensuring the coordination of the appearance, the user's operating experience is improved.
  • the fuselage casing 310 in the embodiment of the present application includes a holding part 311 , a main barrel 312 and a base 313 that communicate with each other.
  • the fuselage casing 310 may be formed separately and then assembled into one.
  • the holding portion 311 is located on the top of the body casing 310, and the holding portion 311 is used for holding by the user during operation.
  • the functional casing 320 in the embodiment of the present application further includes an auxiliary holding part 324 , wherein the auxiliary holding part 324 is formed at the top of the functional casing 320 and indented inwardly.
  • the auxiliary gripping portion 311 is recessed inwardly and disposed in the gripping portion, providing a space for fingers to grasp when the user holds the gripping portion.
  • the base 313 is located at the bottom of the fuselage shell 310 , which is disposed to cover the bottom plate assembly 200 .
  • the main barrel 312 is located between the holding part 311 and the base 313 , the main barrel 312 includes a motor chamber 3122 and an air duct chamber 3123 , the motor chamber 3122 and the air duct chamber 3123 are communicated and arranged, wherein the outer circumference of the motor chamber 3122 is a cylindrical surface , the motor chamber 3122 protrudes from the air duct chamber 3123.
  • the motor chamber 3122 is provided with the motor and the fan assembly 800, etc., the air duct chamber 3123 is provided with air duct components, and the air duct chamber 3123 is provided with the air duct chamber outlet 3124 which is connected to the inlet 322 of the functional housing 320. .
  • the grinding tool 100 in the embodiment of the present application further includes a switch assembly 510 and a control mechanism 520, and the control mechanism 520 is used to control the rotation of the motor, wherein the control mechanism 520 includes a PCBA assembly on which a capacitor is provided , inductance and other related components, the control mechanism 520 is connected with the switch assembly 510 and the power supply, and the on-off of the motor can be controlled by operating the switch assembly 510, wherein the switch assembly 510 is arranged at the front end of the grip portion 311 (ie the left end in FIG. 7 ),
  • the control mechanism 520 is disposed in the air duct chamber 3123 of the main barrel 312 , and may also be disposed in the grip portion 311 , and the control mechanism 520 is disposed vertically.
  • the functional casing 320 is disposed on one side of the body casing 310 .
  • a hollow cavity 321 is formed in the functional casing 320, and an inlet 322 and an outlet 323 are provided on the functional casing 320 which are communicated with the cavity 321.
  • the inlet 322 is communicated with the dust discharge channel 620a in the fuselage casing 310, and the outlet 323
  • the fan assembly 800 is configured to discharge the dust exhaust airflow in the cavity 321 out of the cavity, and the fan assembly 800 is used to form an air passage that moves from the bottom dust suction port 210 a to the inlet 322 .
  • the ratio of the projected area of the functional casing 320 to the bottom plate 210 to the area of the bottom plate 210 is greater than or equal to 0.15 and less than or equal to 0.95.
  • the ratio of the projected area of the functional housing 600 to the bottom plate 210 to the area of the bottom plate 210 can also be set to 0.6, 0.5 or 0.4.
  • the axial height of the functional housing 320 of the present application is greater than or equal to 15 mm and less than or equal to 125 mm, or the axial height of the functional housing 320 is greater than or equal to 25 mm and less than or equal to 70 mm.
  • the ratio of the axial height of the functional housing 320 to the axial height of the whole machine is greater than or equal to 0.3 and less than or equal to 0.85.
  • the ratio of the axial height of the functional housing 320 to the axial height of the whole machine is about 0.5;
  • the ratio of the axial height of the functional housing 320 to the axial height of the whole machine can be set to 0.6 or 0.7, wherein the axial height refers to the height perpendicular to the vertical direction of the bottom plate 210 .
  • the capacity of the functional casing 320 can be increased, thereby ensuring the capacity of the functional casing 320 on the basis of ensuring the compact structure and small size of the grinding tool 100 as a whole, and avoiding excessive capacity. Frequent dust dumping caused by small size improves user experience.
  • the functional casing 320 in the embodiment of the present application is matched with the main barrel 312. Since the motor chamber 3121 of the main barrel 312 is protruded, the corresponding functional casing 320 is provided with a notch. That is, the functional casing 320 in the embodiment of the present application is a type of U-shaped casing.
  • the functional casing 320 includes an opening 325 at the bottom thereof, and an end cover 326 disposed at the opening 325 , wherein a groove is provided on the periphery of the end cover 326 , and the casing at the opening of the functional casing 320 The body can be snapped into the groove, thereby realizing the mating and fixing with the end cover 326 . By being provided with the end cover 326, it is convenient for the user to dump dust conveniently.
  • a filter element 330 is further provided in the functional housing 320 , and the filter element 330 is arranged between the inlet 322 and the outlet 323 .
  • the filter element 330 in this embodiment is a folded filter paper, which can be disposed in the functional casing 320 and cover the outlet 323 to prevent dust from flying out of the outlet 323 with the airflow to cause air pollution.
  • the airflow entrained with dust enters the cavity 321 through the inlet 322 , the dust is collected in the functional casing 320 after being filtered by the filter element 330 , and the filtered airflow is discharged from the functional casing 320 through the outlet 323 .
  • a filter element bracket 327 for installing the filter element 330 is also provided.
  • the filter bracket 327 includes a support seat and a blocking arm, wherein the support seat is provided with a hollow opening that allows the dust exhaust air flow to enter the filter element. Remove the filter holder 327 smoothly.
  • the blocking arms are arranged around the filter element 330 to support and shape the filter element 330. At the same time, the blocking arm of the filter element bracket 327 abuts on the inner wall of the upper shell of the functional housing 320, so as to realize the support of the filter element bracket 327. upper limit of .
  • the limiting member can be a rib plate disposed on the inner wall of the functional casing 320 , wherein the rib plate is clamped with the support seat of the filter element bracket 327 to limit it, thereby fixing the filter element bracket 327 to the functional casing 320 .
  • the filter element 330 is clamped in the filter element holder 327, and then the filter element holder 327 and the filter element 330 are inserted upwardly into the top of the functional case 320 through the opening 325 at the lower end of the functional case 320, and are inserted into the functional case 320.
  • the limit pieces can be snapped together.
  • the filter bracket 327 is pulled down and taken out through the opening 325 of the functional housing 320 .
  • the functional casing 320 is snap-connected to the fuselage casing 310 , wherein the top rear end of the functional casing 320 (the rear end refers to the end connected to the fuselage casing) is provided with a
  • a pair of clamping slots 3121 are provided on the upper part of the air duct chamber 3123 of the main barrel 312 on the body casing 310, and the buckles 329 of the functional casing 320 are suitable for being inserted in in the card slot 3121.
  • an auxiliary fixing member 325 is further provided at the bottom of the functional casing 320 , that is, an auxiliary fixing member 328 is provided outside the end cover 326 of the functional casing 320 .
  • the auxiliary fixing member 328 is a groove provided on the end cover 326 , wherein as shown in FIG. 6 , a corresponding boss 3131 is provided on the base 313 of the fuselage shell 310 .
  • the functional case 320 is inserted into the main body case 310 from one side of the main body case 310 , the pair of buckles 329 of the functional case 320 are inserted into the grooves 3121 , and the bosses 3131 on the base 313 Snap into the groove of the end cap 326 . Therefore, the cooperation between the functional casing 320 and the body casing 310 is more stable.
  • the functional casing 320 of the embodiment of the present application includes an outer casing 3211 and an inner casing 3212 that are integrally arranged, wherein the inner casing 3212 is surrounded by the outside of the motor chamber 3122 of the main barrel 313 , and the outer casing 3211 and the inner casing 3212 are enclosed to form a cavity 321 .
  • the inner housing 3212 and the end cover 326 may not be provided.
  • the outer casing 3211 is directly enclosed on the outside of the motor chamber 3122 of the main barrel 312, and forms a cavity 321 together with the outer wall of the motor chamber 3122.
  • the opening enclosed by the outer casing 3211 and the motor chamber 3122 can be either
  • the configuration as the inlet may also be configured as the outlet.
  • the functional casing 320 in this embodiment is a hollow structure as shown in FIG. 5 , and the hollow structure is formed as a cavity 321 for collecting dust, wherein an inlet 322 and an outlet 323 are provided on the functional casing 320 , and the inlet 322 and the outlet 323 are respectively communicates with the cavity 321 .
  • the inlet 322 is provided at the rear end of the functional housing 320
  • the outlet 323 is provided on the outer side of the outer casing 3211 of the functional housing 320 corresponding to the filter element 330 .
  • the grinding tool 100 further includes a dust exhaust assembly 600 , which is arranged in the body casing 310 , and the dust exhaust assembly 600 is arranged between the bottom plate assembly 200 and the functional casing 320 .
  • a channel is formed in the dust assembly 600 to guide the airflow from the bottom dust suction port 210 a of the bottom plate assembly 200 to the functional cabinet 320 .
  • the dust discharge assembly 600 includes a guide portion 610 and a conveying bracket 620 , wherein the guide portion 610 is provided with a dust inlet 611 , and the guide portion 610 is provided on the bottom plate assembly 200 and is connected with the bottom plate dust suction port on the bottom plate assembly 200 210a is connected.
  • the conveying bracket 620 communicates with the dust inlet 611 of the guide portion 610 .
  • the conveying bracket 620 forms a dust discharge channel 620a, the conveying support 620 is provided with a dust outlet 621, the dust outlet 621 is connected to the inlet 322 of the functional housing 320, and the dust discharge channel 620a is arranged between the dust inlet 611 and the dust outlet 621 between.
  • the guide portion 610 can be integrally formed with the delivery bracket 620 , or can be formed separately from the delivery bracket 620 and then assembled.
  • the dust removal assembly 600 may be a metal part or a plastic part, which is not limited.
  • the guide portion 610 is an annular disk body, which is mounted on the base plate assembly 200 , a through hole 610 a is formed in the center of the guide portion 610 , the base plate dust suction port 210 a on the base plate assembly 200 and the through hole 610 a
  • the eccentric bearing and the fan assembly 800 are installed on the base plate assembly 200 through the through hole 610a.
  • the conveying support 620 is arranged approximately vertically; the conveying support 200 includes at least one dust outlet 621, wherein the conveying support 620 is arranged in the air duct chamber 3123 of the main barrel 312, and on the outer wall of the air duct chamber 3123, a The air duct chamber outlet 3124 corresponding to the dust outlet 621 of the bracket 620, wherein the air duct chamber outlet 3124 is disposed on the lower side of the card slot 3121, and the dust outlet 621 is connected to the functional casing through the air duct chamber outlet 3124 320 Inlet 322 communicates.
  • the conveying support 620 can be a tubular support, wherein the conveying support 620 is provided with a channel that penetrates up and down, the opening at the lower end of the channel communicates with the dust inlet 611 on the guide portion 610, and the opening at the upper end of the channel is sufficient It becomes the dust outlet 621 , wherein the lower end refers to the end close to the bottom plate assembly 200 , and the upper end refers to the end away from the bottom plate assembly 200 .
  • the fan assembly 800 is connected to the driving mechanism 400 , which rotates under the driving of the motor, the fan assembly 800 rotates and forms a negative pressure state in the main body casing 310 , inhaling the dust generated by the bottom plate assembly 200 during grinding, and the dust is in the fan assembly 800 Driven by the rotating airflow generated by the rotation, the dust suction port 210a of the bottom plate enters the functional casing 320 through the dust discharge assembly 600, and finally the exhaust air is filtered by the filter element 330 in the functional casing 320 and then discharged from the outlet 323, and the dust is left in the functional casing 320. in the housing 320.
  • the grinding tool 100 of the present application is provided with a cavity 321 for collecting dust in the casing assembly 300, which simplifies the structure of the whole machine, and can collect dust without additionally connecting a dust bag or a dust collecting device, avoiding the need for installation
  • the removal of the external dust collecting device simplifies the operation method and improves the user's sense of use experience; at the same time, since the functional casing 320 and the main body casing 310 together form the main casing, the functional casing 320 is integrated into the main casing, and the appearance is beautiful.
  • a support frame 700 is further provided in the mainframe casing 310 .
  • One end of the support frame 700 is connected to the mainframe casing 310 , and the other end is connected to the base plate assembly 200 .
  • one end of the support frame 700 in the embodiment of the present application is mounted on the base plate assembly 200 , and the other end is in contact with the base 313 of the main body casing 310 for supporting and connecting the main body casing 310 and the base 313 .
  • the vibration of the tool is reduced; at the same time, the support frame 700 resists the torsional force from the base plate assembly 200 relative to the body shell 310, thereby reducing the swing of the tool.
  • the bottom plate 210 in this embodiment is triangular-like, so three support frames 700 are respectively installed at the three top corners.
  • the number of support frames is also not limited to three, for example, two or four can be provided when the bottom plate is circular or square.
  • the support frame 700 includes a support base 710 , a mounting base 720 , a central release member 730 and a floating arm, wherein the upper end of the support base 710 abuts against the fuselage shell 310 , the mounting base 720 and the bottom plate 210 The connection is fixed, the mounting seat 720 and the supporting seat 710 are arranged at an axial interval, and the floating arm directly or indirectly connects the supporting seat 710 and the mounting seat 720 .
  • the bottom plate 210 is provided with an installation space for installing the support frame 700
  • the mounting seat 720 is fixed in the installation space of the bottom plate 210
  • the top of the support seat 710 abuts against the bottom of the base 313 of the fuselage shell 310
  • the mounting seat 720 is Both sides are provided with screw holes 760, which are fixedly connected to the bottom plate 210 by screws.
  • the fixed connection method is not limited to screw connection, and can also be fixedly connected to the base plate by means of clip connection, plug connection, etc., and the fixed connection method between the mounting seat and the base plate is not limited here.
  • the central release member 730 is directly or indirectly fixedly connected to the support base 710 .
  • the central release member 730 is connected to the support base 710 or the mounting base 720 through the floating arm.
  • the support frame 700 of the embodiment of the present application further includes an escape portion, and the escape portion includes a first through hole 711 provided on the support base 710 , and a second through hole 721 provided on the mounting base 720 .
  • the hole 721 and the first through hole 711 have parallel axes or the second through hole 721 and the first through hole 711 are coaxially disposed, and the avoidance portion provides space for the movement of the central release member 730 and the floating arm.
  • the avoidance portion may not be provided, and the floating arm and the central release member are provided between the axial end faces of the mounting seat 720 and the support seat 710 at this time.
  • the floating arm allows the support base 710 to move relative to the central release member 730 when the support frame 700 is subjected to an axial and/or radial force. In other words, the floating arm also allows the support frame 700 to be subjected to an axial and/or radial force.
  • the support base 710 and the mounting base 720 move relative to each other, so that the base plate 210 can be twisted relative to the fuselage shell 310 through the support frame 700 , so that the support frame 700 can bear the forces from the axial and radial directions.
  • the floating arm in this embodiment includes a floating connecting arm 740 and a floating supporting arm 750 .
  • the floating connecting arm 740 connects the central releasing member 730 and the support base 710
  • the floating supporting arm 750 connects the central releasing member 730 and the mounting base 720 .
  • the central release member 730 is a cylinder extending along the axial direction of the first through hole 711 and the second through hole 721 , and the central release member 730 is substantially vertically disposed between the first through hole 711 and the second through hole 721 in a vertically extending space.
  • the central release member 730 may also be disposed inclined to the axis of the first through hole 711 or the second through hole 721 .
  • the central release member 730 in the embodiment of the present application is connected to the support base 710 through the floating connecting arm 740 , and is simultaneously connected to the mounting base 720 through the floating support arm 750 .
  • the central release member 730 is connected to the mounting base 720 through the floating support arm 750 , thereby realizing indirect fixation of the central release member 730 relative to the bottom plate 210 .
  • the central release member 730 is connected to the support base 710 by bending through the floating connecting arm 740, thereby realizing the indirect connection between the support base 710 and the mounting base 720, so that the support frame 700 is configured as a fixed lower end, and the upper end and the lower end float.
  • a connected floating structure is configured as a fixed lower end, and the upper end and the lower end float.
  • the support frame 700 can not only bear the axial force of the fuselage shell 310 relative to the bottom plate assembly 200 to eliminate or reduce the axial vibration of the whole machine, on the other hand
  • the support frame 700 can bear the radial force generated when the bottom plate assembly 200 rotates relative to the fuselage shell 310, so as to reduce the swing of the whole machine, comprehensively reduce the vibration and swing of the whole machine, and improve the user's feeling of use.
  • the floating connecting arm 740 in the embodiment of the present application is connected to the lower end of the support base 710 and the central release member 730 , and the floating support arm 750 is connected to the upper end of the mounting base 720 and the central release member 730 .
  • one end of the floating connecting arm 740 in this embodiment is connected to the inner edge of the first through hole 711 of the support base 710 , and the other end is connected to the lower end of the central release member 730 .
  • One end of the floating support arm 750 is connected to the inner edge of the second through hole 721 , and the other end is connected to the upper end of the central release member 730 .
  • the floating connecting arm 740 includes a plurality of bending sections extending radially toward the center of the first through hole 711
  • the same floating support arm 750 also includes a plurality of bending sections extending radially from the first through hole .
  • the floating connecting arm 740 includes a first radially extending section 741 , a second radially extending section 743 and an axially extending section 742 , wherein the radially extending section 741 includes a substantially radially extending section 741 .
  • a radially extending portion of the through hole 711, the axially extending section 742 may extend obliquely or parallel to the axis of the first through hole 711, and the axial extending section 742 connects the first radially extending section 741 and the second radially extending section 741 at both ends.
  • extension 743 Towards extension 743.
  • the first radially extending section 741 is connected to the inner edge of the first through hole 711
  • the axis extending section 742 is connected between the first radially extending section 741 and the second radially extending section 743
  • the second radially extending section 742 is connected to the
  • the lower end of the central release member 730 is connected, and the transitional connection between the first radially extending segment 741 and the second radially extending segment 743 and the axially extending segment 742 may be a smoothly bent arc segment.
  • the structures of the floating support arm 750 and the floating connection arm 740 are substantially the same, and the difference only lies in the connection positions of the two ends, which will not be repeated here.
  • floating connecting arms 740 and three floating supporting arms 750 there are three floating connecting arms 740 and three floating supporting arms 750 each.
  • the number of the floating connection arms 740 and the floating support arms 750 is also not limited to three.
  • the floating connecting arm and the floating supporting arm can also include several overlapping segments that overlap in the radial direction of the first through hole, or the floating connecting arm and the floating supporting arm can include several radially overlapping segments along the first through hole. extended extension. It is beneficial to improve the deformation paths of the floating connecting arm and the floating supporting arm, thereby improving their anti-vibration and anti-swing effects.
  • the floating connecting arm and the floating supporting arm can also be provided as straight arms directly connected to the central release piece and the mounting seat, and between the central release piece and the support seat, ie, excluding the curved section.
  • the floating connecting arm 740 and the floating supporting arm 750 connected between the mounting seat 720 and the supporting seat 710 By arranging the floating connecting arm 740 and the floating supporting arm 750 connected between the mounting seat 720 and the supporting seat 710, the axial distance between the mounting seat 720 and the supporting seat 710 is reduced without reducing the effective deformation path, so On the basis of reducing the height of the support frame 700, the axial rigidity and radial rigidity of the support frame 700 are not reduced, thereby ensuring the shock resistance and torsion resistance of the whole machine.
  • the size of the whole machine is reduced, which is conducive to the compactness and miniaturization of the whole machine.
  • the center of gravity of the whole machine is also lowered, which is more conducive to improving the user's sense of manipulation, making the user's operation easier and lighter. .
  • the axial height of the support frame 700 in this embodiment is H, so 6mm ⁇ H ⁇ 20mm.
  • the axial height H of the support frame 700 in this embodiment is about 15 mm.
  • the axial stiffness of the support frame 700 is K1, the radial stiffness is K2, the axial stiffness K1 refers to the ability of the support frame 700 to resist elastic deformation when the support frame 700 is subjected to axial force, and the radial stiffness K2 refers to the radial stiffness of the support frame 700 in its radial direction.
  • 20N/mm ⁇ K1 ⁇ 500N/mm for example, may be set to 80N/mm ⁇ K1 ⁇ 300N/mm, or 100N/mm ⁇ K1 ⁇ 130N/mm. 5N/mm ⁇ K2 ⁇ 30N/mm, optional 6N/mm ⁇ K2 ⁇ 15N/mm. Therefore, 0.67 ⁇ K1/K2 ⁇ 100, wherein 5.3 ⁇ K1/K2 ⁇ 50 can be selected.
  • the support frame 700 in the embodiment of the present application is an integrally formed part, for example, an integrally formed plastic part.
  • the support frame 700 ′ is not provided with a mounting seat and a floating support arm.
  • the support frame 700 ′ is not provided with a mounting seat and a floating support arm 'includes a support base 710', a central release piece 730' and a floating connection arm 740', wherein the central release piece 730' is connected to the support base 710' through the floating connection arm 740'.
  • the escape portion includes a first through hole 711' provided on the support base 710', and the escape portion provides space for the movement of the central release member 730' and the floating connecting arm 740'.
  • the central release member 730' is directly connected to the base plate assembly 200, and a screw hole 760' is provided in the central release member 730', wherein the screw hole 760' is generally arranged along the axial direction of the first through hole 711', and the center
  • the release member 730 ′ is fixedly connected to the bottom plate 210 through screws.
  • the floating connecting arm 740 ′ is also a curved arm, and the arm length of the floating connecting arm 740 ′ is greater than the axial height of the support base 710 ′, wherein the floating connecting arm 740 ′ may include several release pieces 730 along the center ' of axially overlapping overlapping segments, and/or several overlapping segments that overlap radially of said central release 730'.
  • the floating link arm 740' in this embodiment includes axially overlapping sections that overlap axially along the first through hole 711'. One end of the floating connecting arm 740' is connected to the upper end of the central release member 730', and the other end is connected to the support base 710'.
  • the floating connecting arm 740' also includes several radially extending sections and axially extending sections, which are connected to form a curved floating connecting arm 740', wherein the radially extending sections and the axially extending sections are connected to form a curved floating connecting arm 740'
  • the extensions may overlap in the radial direction, and the axial extensions may also overlap in the axial direction.
  • the radially overlapping section and the axially overlapping section may also not be included, as long as the floating extension arm 740' is bent and connected between the central release member 730' and the support seat 710'.
  • the support base 710' may not be provided with an escape portion, and in this case, the central release member and the floating connecting arm are provided at the bottom of the support base 710'.
  • FIG. 18 shows a grinding tool 900 in the second embodiment of the present application.
  • the grinding tool 900 has the same base plate assembly, casing assembly, driving mechanism, and fan assembly as the grinding tool in the first embodiment. and power.
  • the difference between the grinding tool 900 in this embodiment and the grinding tool in the first embodiment may be the difference in the dust removal components. Only the difference between this embodiment and the first embodiment will be introduced below, and the rest are the same. For a detailed introduction, please refer to the description in the first embodiment.
  • the dust exhaust assembly 91 is at least partially disposed in the fuselage casing 92, and the dust exhaust assembly 91 forms or is connected with a dust exhaust channel to guide the air flow from the dust suction port of the bottom plate assembly to the functional casing.
  • the dust discharge assembly 91 includes a guide portion 911 and a conveying bracket 912, wherein the guide portion 911 is provided with a dust inlet 911a, and the guide portion 911 is located above the bottom plate assembly and is connected with the dust suction port on the bottom plate assembly Connected.
  • the conveying bracket 912 communicates with the dust inlet 911 a of the guide portion 911 , and the conveying bracket 912 is provided with a dust outlet, and the dust outlet is connected to the inlet of the functional housing 93 .
  • the guide portion 911 may be integrally formed with the conveying bracket 912, or may be formed separately from the conveying support 912 and then assembled.
  • the dust removal assembly 91 may be a metal part or a plastic part, which is not limited.
  • the conveying bracket 912 is detachably connected to the fuselage casing 92 .
  • an accommodating cavity 921 into which the conveying bracket 912 can be inserted is further provided on the fuselage casing 92.
  • the conveying bracket 912 is an integral structure, and the accommodating cavity 921 is formed from the accommodating cavity 921.
  • the delivery stent 912 may also be a composite structure, inserted from multiple sides of the accommodating cavity 921.
  • the accommodating cavity 921 communicates with the guide portion 911 , and when the conveying bracket 912 is installed in the accommodating cavity 921 , the conveying bracket 912 communicates with the dust inlet 911 a of the guide portion 911 .
  • the conveying bracket 912 includes a mating port 912 a that can be matched with the dust inlet 911 a , and also includes a first dust outlet 912 b and a second dust outlet 912 c that are mated with the inlet of the functional housing 93 .
  • the functional housing 93 includes a first dust inlet matched with the first dust outlet 912b, and also includes a second dust inlet matched with the second dust outlet 912c.
  • the mating port 912a of the conveying bracket 912 is connected to the first dust outlet 912b and the second dust outlet 912c, respectively.
  • the conveying bracket 912 can form two passages, and the dust discharge passages connecting the first dust outlet 912b and the second dust outlet 912c converge to the matching port 912a.
  • the delivery stent 912 is configured to extend substantially along the first linear direction.
  • the conveying bracket 912 includes a limiting portion 912d that can be clamped to the body shell 92 , and the limiting portion 912d is protruded from the extending direction of the conveying bracket 912 .
  • the fuselage shell 92 is formed or connected with a limiting member that cooperates with the limiting portion 912d.
  • the limiting member is arranged to be able to generate displacement along a direction perpendicular to the extending direction of the conveying bracket 912 , so as to cooperate with the limiting portion 912d to clamp the conveying bracket 912 .
  • the first dust outlet 912b also extends to a predetermined distance along a second direction perpendicular to the first linear direction, so as to be directly matched with the first dust inlet.
  • a sealing device is also provided at the position where the first dust outlet 912b is mated with the first dust inlet, so as to prevent dust from escaping from the mating position of the first dust outlet 912b and the first dust inlet.
  • the second dust outlet 912c opens in a third direction perpendicular to the first linear direction. Wherein, the second direction is parallel to the third direction.
  • the body casing 92 is formed with a connecting end which is matched with the second dust outlet 912c, that is, the second casing dust outlet 912d.
  • the second dust outlet 912d of the casing extends along the third direction, extends inward to connect with the second dust outlet 912c, and extends outward to finally be matched with the second dust inlet.
  • the second housing dust outlet 912d and the second dust outlet 912c form a low-lying or snap-fit relationship, and also form a snap-fit relationship with the second dust inlet.
  • the second dust outlet 912c can have a straight structure and be located in the same plane as the conveying bracket 912, which facilitates the disassembly of the conveying bracket 912.
  • the second housing dust outlet 912d is provided with a sealing device at the connection between the second dust outlet 912c and the second dust inlet.
  • the sealing device may be a soft rubber encapsulation structure to seal the connection to avoid dust escape, and reduce wear and tear caused by vibration.
  • the fuselage housing 92 includes a base parallel to the base plate assembly, and the functional housing 93 is placed on the base and is detachably connected to the base.
  • the base can be a structure such as a clip, an elastic steel ball, etc., and a corresponding connection groove is provided on the functional housing 93 .

Abstract

L'invention concerne un outil de polissage (100), comprenant : un ensemble formant plaque de base (200), comprenant une plaque de base (210) servant à des fins de montage d'un élément de polissage ; un ensemble formant boîtier (300) disposé sur la plaque de base, et comprenant un boîtier formant corps (310) ; un mécanisme d'entraînement (400) configuré pour entraîner l'ensemble formant plaque de base à se déplacer ; et un cadre de support (700), disposé entre le boîtier formant corps et la plaque de base. Le cadre de support comprend : une base de support (710) disposée entre le boîtier formant corps et la plaque de base ; un élément de libération central (730), relié directement ou indirectement à la plaque de base ; et un bras de liaison flottant (740) relié entre l'élément de libération central et la base de support, le bras de liaison flottant permettant au cadre de support de se déplacer par rapport à l'élément de libération central lorsque le cadre de support reçoit une force d'action axiale et/ou radiale. Selon l'outil de polissage, la rigidité axiale et la rigidité radiale du cadre de support ne sont pas réduites sur la base du fait que la hauteur du cadre de support est réduite, ceci permettant d'assurer la résistance aux chocs et la résistance à la torsion de la machine dans son ensemble. De plus, étant donné que la hauteur de la machine dans son ensemble est réduite, la taille de la machine dans son ensemble est réduite, ceci facilitant le compactage et la miniaturisation de la machine dans son ensemble ; le centre de gravité de la machine dans son ensemble est également réduit après la réduction de la hauteur, ceci facilitant l'amélioration de l'expérience d'utilisation par l'utilisateur, et rendant l'utilisation par l'utilisateur plus facile et plus simple.
PCT/CN2021/101766 2020-06-29 2021-06-23 Outil de polissage WO2022001774A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA3186289A CA3186289A1 (fr) 2020-06-29 2021-06-23 Outil de poncage
EP21831767.5A EP4140646A4 (fr) 2020-06-29 2021-06-23 Outil de polissage
US17/987,249 US20230084672A1 (en) 2020-06-29 2022-11-15 Sanding tool

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202010601000.2 2020-06-29
CN202010601000 2020-06-29
CN202121256254.1U CN216463774U (zh) 2021-06-04 2021-06-04 打磨工具
CN202121256254.1 2021-06-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/987,249 Continuation US20230084672A1 (en) 2020-06-29 2022-11-15 Sanding tool

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WO2022001774A1 true WO2022001774A1 (fr) 2022-01-06

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PCT/CN2021/101766 WO2022001774A1 (fr) 2020-06-29 2021-06-23 Outil de polissage

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US (1) US20230084672A1 (fr)
EP (1) EP4140646A4 (fr)
CA (1) CA3186289A1 (fr)
WO (1) WO2022001774A1 (fr)

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CN2663080Y (zh) * 2003-12-22 2004-12-15 朱文华 平板砂光机
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US20230084672A1 (en) 2023-03-16
EP4140646A1 (fr) 2023-03-01
EP4140646A4 (fr) 2023-10-11
CA3186289A1 (fr) 2022-01-06

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