CN114871916A - Sander with function of quickly replacing bottom plate - Google Patents

Sander with function of quickly replacing bottom plate Download PDF

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Publication number
CN114871916A
CN114871916A CN202210428557.XA CN202210428557A CN114871916A CN 114871916 A CN114871916 A CN 114871916A CN 202210428557 A CN202210428557 A CN 202210428557A CN 114871916 A CN114871916 A CN 114871916A
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CN
China
Prior art keywords
bottom plate
sander
locking
shaft
assembly
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Granted
Application number
CN202210428557.XA
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Chinese (zh)
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CN114871916B (en
Inventor
杨庆生
倪国献
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Changzhou Saidi Tools Co ltd
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Changzhou Saidi Tools Co ltd
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Application filed by Changzhou Saidi Tools Co ltd filed Critical Changzhou Saidi Tools Co ltd
Priority to CN202210428557.XA priority Critical patent/CN114871916B/en
Publication of CN114871916A publication Critical patent/CN114871916A/en
Priority to DE202023100068.1U priority patent/DE202023100068U1/en
Priority to FR2300980A priority patent/FR3134736B3/en
Application granted granted Critical
Publication of CN114871916B publication Critical patent/CN114871916B/en
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    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • 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
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention discloses a sander with a function of quickly changing a base plate, and belongs to the field of electric tools. The sander disclosed by the invention has the advantages that the bottom plate lock knob is utilized to detachably connect the bottom plate and the sander body together from the bottom of the bottom plate, the bottom plate lock knob can be more conveniently operated by utilizing the knob structure, the operation is convenient and smooth, the axial fastening, firmness and reliability of the bottom plate can be ensured by matching with the locking of the main shaft locking mechanism on the output shaft, the sander body can be matched with the bottom plates in different forms for use, and the multifunctional sander integrating multiple functions is formed. In addition, the spindle locking mechanism can form an interlocking effect with a starting switch on the sander body, the sander can be always in a release state on the output shaft when running, and the sander is prevented from being locked and damaged due to misoperation. And moreover, the protective cover can cover the bottom plate lock button, so that potential safety hazards such as hiring hands and the like when the bottom plate lock button rotates are effectively eliminated, and the use is safer and more reliable.

Description

Sander with function of quickly replacing bottom plate
Technical Field
The invention relates to a sander, in particular to a sander with a function of quickly replacing a base plate.
Background
A sander is a power tool frequently used in sanding and polishing operations. The handheld sander is popular among users due to the advantages of convenience in use, flexibility in operation and the like, and can be used for sanding work on surfaces such as wooden products, metal products, plastic products, walls and the like. A common handheld sander mainly comprises a sander body and a bottom plate, wherein the bottom plate is installed on the sander body, and a motor in the sander body drives the bottom plate to do reciprocating swing motion through an eccentric mechanism, so that sanding and polishing operations are performed on workpieces.
For different working environments, different shapes of polishing accessories, namely a bottom plate of the sander, are usually selected on the sander so as to meet different polishing working conditions. The common sander base plate comprises a triangular base plate, a rectangular base plate, a circular base plate and the like, wherein the circular base plate is directly connected with an eccentric shaft of a sander and revolves around an output shaft of the sander and simultaneously rotates around the eccentric shaft to form random orbital motion; the triangular bottom plate and the rectangular bottom plate are connected with the eccentric shaft of the machine body and are connected with the machine body through the swing support frame, so that the triangular bottom plate and the rectangular bottom plate only do revolution swing to form revolution orbital motion. Different sander baseplates have different purposes and different use environments, so that the all-in-one sander capable of flexibly replacing different baseplates is certainly popular with consumers.
In the multi-in-one multifunctional sander, the base plate needs to be frequently disassembled and replaced, so that the quick-replacing structure of the base plate is indispensable for the multifunctional sander. Common quick change structure of sander base plate mostly adopts screw fastener to link together the eccentric shaft of bottom plate and grinder, need use assembly and disassembly tools such as spanner during the dismouting, and the dismouting operation is comparatively hard and loaded down with trivial details. To this kind of problem, chinese patent number ZL201821738178.6 discloses "a grinder bottom plate is easy to be traded mechanism and uses its grinder", its grinder bottom plate is easy to be traded mechanism including installing the locking lever on the grinder bottom plate and locating the pothook of connecting seat lower part, the work part of locking lever rotates and installs on the upper portion connecting end of grinder bottom plate, and the work part of locking lever be equipped with through rotating the locking lever and with the pothook lock on the connecting seat or the buckling parts that break away from, the one end of locking lever still is equipped with and is used for driving work part pivoted operating handle, utilize locking lever and pothook cooperation to realize the bottom plate and quick connection and the tear open of grinder organism and trade. The mode is simple to operate, the bottom plate is convenient to disassemble and assemble, but the axial locking force depends on the buckling strength of the locking rod and the clamping hook, the axial locking strength is not high in threaded connection strength, and the operating handle of the locking rod is easy to accidentally loosen due to mistaken touch.
Also there is the direct product with bottom plate threaded connection of output shaft that utilizes grinder in the market at present, this kind of design is the locking screw or the output shaft that utilize the operation spanner at organism top to rotate in the hollow output shaft, utilize locking screw or output shaft lower part and the direct threaded connection of bottom plate eccentric shaft, realize the dismouting of bottom plate, this kind of structure does not have the detachable screw, instrument such as special spanner that also need not carries out the bottom plate dismouting, moreover, the operation is simple, but its structure is comparatively complicated, the operation spanner at top need overturn and realize the locking or the unblock of output shaft, just so make the operation spanner can only adopt the single armed structure, lead to the screw to twist soon the operation inconvenient, the unilateral power of applying is twisted soon, and then lead to the bottom plate installation insecure easily. Moreover, the operation wrench arranged at the top of the sander has the possibility of misoperation when the sander works, and the operation wrench is triggered to lock the main shaft when the sander works, so that the sander is damaged. In addition, when through the installation of operation spanner or dismantle the bottom plate, in order to prevent that the eccentric shaft from following the rotation, need fix the eccentric shaft with the hand, for the convenience of the fixed of eccentric shaft and set up eccentric balancing weight in the bottom plate below, like this, at the grinder during operation, the eccentric shaft drives eccentric balancing weight and rotates, has the potential safety hazard.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects of complex structure, insufficient smooth operation, poor installation firmness, potential safety hazards and the like of the existing sander base plate dismounting structure, and provides a sander with a base plate quick-changing function. In addition, the spindle locking mechanism can form an interlocking effect with a starting switch on the sander body, the sander can be always in a release state on the output shaft when running, and the sander is prevented from being locked and damaged due to misoperation. And moreover, the protective cover can cover the bottom plate lock button, so that potential safety hazards such as hiring hands and the like when the bottom plate lock button rotates are effectively eliminated, and the use is safer and more reliable.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a sander with a function of quickly changing a base plate, which comprises a machine body assembly, a base plate assembly and a base plate quick-change component, wherein the base plate assembly is detachably arranged on the machine body assembly through the base plate quick-change component, the machine body assembly comprises an output shaft controlled to rotate and a main shaft locking mechanism used for locking the rotation of the output shaft when the base plate assembly is disassembled and assembled, the base plate assembly comprises a base plate main body and an eccentric shaft rotatably arranged on the base plate main body, and the sander comprises a sander body assembly, a base plate assembly and a sander base plate quick-change component, wherein the sander comprises a main body and a sander body, the sander body assembly comprises a main body and an eccentric shaft, the eccentric shaft is rotatably arranged on the main body, and the sander comprises a main body, the sander body is characterized in that:
the quick-change bottom plate component is arranged at the bottom of the bottom plate assembly and comprises a bottom plate locking button and a protective cover, the bottom plate locking button is provided with a knob structure and a locking end which can be in threaded fit with the output end of the output shaft, the bottom of the bottom plate main body is provided with a countersunk hole for accommodating the quick-change bottom plate component, an eccentric shaft hole is formed in an eccentric shaft of the bottom plate assembly, when the body assembly and the bottom plate assembly are installed, the output end of the output shaft or the locking end of the bottom plate locking button penetrates through the shaft hole of the eccentric shaft, and when the output shaft is rotationally locked by the main shaft locking mechanism, the axial hoisting installation or disassembly of the bottom plate assembly is realized by the threaded screwing of the bottom plate locking button and the output end of the output shaft; the protective cover is arranged on the bottom plate lock knob and can expose the knob structure of the bottom plate lock knob by opening or cover the bottom plate lock knob by closing.
Furthermore, the spindle locking mechanism and a starting switch which is arranged on the machine body assembly and used for controlling the rotation motion of the output shaft have an interlocking function, and when the starting switch is in an opening state, the spindle locking mechanism is always in a releasing state for the output shaft; when the starting switch is in a closed state, the spindle locking mechanism can selectively lock the output shaft.
Furthermore, the spindle locking mechanism comprises a spindle locking button and a spindle locking disc, the spindle locking disc is coaxially fixed on the output shaft, the spindle locking button is provided with a bolt, the spindle locking button is axially and telescopically arranged on the upper part of the shell of the machine body assembly through a reset spring, and the bolt of the spindle locking button is matched with a plurality of locking jacks circumferentially distributed on the spindle locking disc; or the main shaft lock button is axially and telescopically arranged on the side surface of the shell of the machine body assembly through a return spring, and the bolt of the main shaft lock button is matched with a plurality of locking jacks arranged on the side surface of the main shaft locking disc; the starting switch on the machine body assembly is a push button switch, a push button baffle plate matched with the main shaft lock button is arranged on the push button switch, and when the push button switch is in an opening state, the push button baffle plate blocks the main shaft lock button, so that the main shaft lock button cannot be pressed down and is always kept in a release state on the output shaft; when the push button switch is in a closed state, the push button baffle releases the main shaft lock button, so that the main shaft lock button can be pressed down to enable the bolt to be inserted into the corresponding locking jack of the main shaft locking disk to lock the output shaft.
Furthermore, the output end of the output shaft is provided with a threaded hole, the locking end of the bottom plate locking button is a stud in threaded fit with the threaded hole, and when the machine body assembly and the bottom plate assembly are installed, the output end of the output shaft penetrates through the shaft hole of the eccentric shaft and is in threaded connection with the stud of the bottom plate locking button.
Furthermore, the knob structure of bottom plate lock button be the otic placode of relative setting, the otic placode of visor and one side revolve the rotation and be connected to adopt buckle structure cooperation with the otic placode of opposite side, the visor can revolve the rotation and open in order to expose the otic placode, or rotate the lock through buckle structure and cover the otic placode on the bottom plate lock button.
Further, the visor be circular structure, the periphery of visor be equipped with in the round turn along the body, the enstrophe on be close to the pivot on along the body one side be equipped with be used for dodging the notch of dodging that corresponds the otic placode, the enstrophe along the body with dodge the relative one side inboard of notch and be equipped with the buckle, the corresponding side the otic placode on be equipped with above-mentioned buckle matched with draw-in groove.
Furthermore, a buckle seat is arranged on one side of the bottom plate lock button, a first buckle hook is arranged on the buckle seat, a rotating shaft which is perpendicular to the axial direction of the bottom plate lock button is arranged on the bottom plate lock button, a rotating seat is arranged on the inner side of the protective cover, a sliding groove is arranged on the rotating seat, two ends of the rotating shaft are slidably arranged in the sliding groove, a second buckle hook which is matched with the first buckle hook is arranged on one side of the protective cover, a groove is arranged on the opposite side of the second buckle hook, and an inclined plane positioning structure for positioning the protective cover in an opening state is further arranged between the bottom plate lock button and the protective cover; the visor can revolute the rotation and slide and open and fix a position at the open mode through inclined plane location structure to expose the bottom plate lock button and twist the operation soon, or lock in order to cover the bottom plate lock button on the bottom plate lock button through first clip and second clip.
Furthermore, the upper part of the bottom plate main body is provided with a bearing mounting hole, a bottom plate bearing is arranged in the bearing mounting hole, the eccentric shaft is mounted on the bottom plate main body through the bottom plate bearing, the lower end of the output shaft is fixedly provided with a positioning transmission block, the positioning transmission block is provided with first end face teeth, the top of the eccentric shaft is provided with second end face teeth, and when the machine body assembly and the bottom plate assembly are mounted, the first end face teeth and the second end face teeth are in meshing transmission.
Furthermore, the bottom plate quick-change assembly further comprises a gasket, the gasket is sleeved on the locking end of the bottom plate locking button, and when the bottom plate locking button and the output end of the output shaft are axially and tightly hung, the gasket is tightly pressed on the lower end face of the eccentric shaft or the lower end face of the inner ring of the bottom plate bearing.
Furthermore, a support frame is arranged at the lower part of the machine body assembly, the bottom plate assembly comprises a random orbital motion bottom plate and a revolution orbital motion bottom plate, the random orbital motion bottom plate is detachably arranged on an output shaft of the machine body assembly through a bottom plate quick-change component and rotates around an eccentric shaft while revolving around the output shaft; the revolution orbit motion bottom plate is detachably arranged on an output shaft of the machine body assembly through a bottom plate quick-change component, is in positioning fit with the support frame and revolves around the output shaft under the limiting action of the support frame; the machine body assembly can be matched with the random orbital motion bottom plate and the revolution orbital motion bottom plate to form the all-in-one sander.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the invention relates to a sander with a function of quickly changing a base plate, which comprises a machine body assembly, a base plate assembly and a base plate quick-change component, wherein the base plate assembly is detachably arranged on the machine body assembly through the base plate quick-change component; by adopting the design, the bottom plate and the sander body are detachably connected together from the bottom of the bottom plate by using the bottom plate lock knob, the bottom plate lock knob can be operated more conveniently by using the knob structure, the operation is more convenient and smooth, the axial hanging and the mounting of the bottom plate can be ensured to be firm and reliable by matching with the locking of the main shaft locking mechanism to the output shaft, and the sander body has the advantages of simple structure for dismounting the bottom plate, convenient operation, firm mounting and the like, so that the sander body can be matched with the bottom plates in different forms for use, and a multi-in-one multifunctional sander is formed; the protective cover is arranged on the bottom plate lock knob, and can cover the bottom plate lock knob in the countersunk hole by opening a knob structure for exposing the bottom plate lock knob or closing the bottom plate lock knob, so that potential safety hazards such as drunkenness and the like when the bottom plate lock knob rotates are effectively eliminated, and the use is safer and more reliable;
(2) according to the sander with the function of quickly changing the base plate, the interlocking function is realized between the main shaft locking mechanism and the starting switch which is arranged on the sander body assembly and used for controlling the rotary motion of the output shaft, and when the starting switch is in an opening state, the main shaft locking mechanism is always in a release state for the output shaft; when the starting switch is in a closed state, the main shaft locking mechanism can selectively lock the output shaft; the release state of the output shaft can be ensured when the sander runs, the sander is prevented from being locked and damaged due to misoperation, and the use stability and the service life of the sander are improved;
(3) according to the sander with the function of quickly changing the base plate, the spindle locking mechanism comprises the spindle locking button and the spindle locking disk, the spindle is locked stably and reliably by the fact that the axial rotation of the output shaft is locked through the matching of the bolt of the spindle locking button and the locking jack of the spindle locking disk; the starting switch adopts a push button switch, the push button baffle plate on the push button switch is interlocked with the main shaft lock button, and when the push button switch is in an opening state, the push button baffle plate blocks the main shaft lock button, so that the main shaft lock button cannot be pressed down and is always kept in a release state on the output shaft; when the push button switch is in a closed state, the push button baffle releases the main shaft lock button, so that the main shaft lock button can be pressed down to enable the bolt to be inserted into the corresponding locking jack of the main shaft locking disk to lock the output shaft; the structure is simple and compact, and the operation is flexible and convenient;
(4) according to the sander with the function of quickly changing the base plate, the output end of the output shaft is provided with the threaded hole, the locking end of the base plate locking button is the stud matched with the threaded hole in a threaded manner, when the machine body assembly and the base plate assembly are installed, the output end of the output shaft penetrates through the shaft hole of the eccentric shaft and is in threaded connection with the stud of the base plate locking button, and by adopting the design, the threaded hole is more conveniently formed on the output shaft, the output end of the output shaft can be conveniently assembled with the eccentric shaft on the base plate, and the base plate of the sander is further conveniently disassembled and assembled;
(5) according to the sander with the function of quickly changing the base plate, the knob structure of the base plate lock knob is a pair of ear plates which are oppositely arranged, the protective cover is rotatably connected with the ear plate on one side around the rotating shaft and is matched with the ear plate on the other side by adopting the buckling structure, the protective cover can be rotatably opened around the rotating shaft to expose the ear plate, or is rotatably buckled on the base plate lock knob by the buckling structure to cover the ear plate, the protective cover is arranged on the base plate lock knob, scattered component parts are reduced, the protective cover is not easy to lose when the base plate is disassembled, the structural design is simpler and more compact, and the use safety of the sander is further ensured under the condition that the base plate is convenient to disassemble;
(6) the sander with the function of quickly changing the base plate is characterized in that the protective cover is of a circular structure, a circle of inward-turning edge body is arranged on the periphery of the protective cover, an avoidance notch for avoiding a corresponding ear plate is formed in one side, close to the rotating shaft, of the inward-turning edge body, a buckle is arranged on the inner side of one side, opposite to the avoidance notch, of the inward-turning edge body, and a clamping groove matched with the buckle is formed in the corresponding side ear plate;
(7) the invention relates to a sander with a function of quickly changing a base plate, wherein one side of a base plate lock button is provided with a buckle seat, the buckle seat is provided with a first clasp, one side of a protective cover is provided with a second clasp matched with the first clasp, the opposite side of the second clasp is provided with a groove, a slope positioning structure for positioning the protective cover in an open state is further arranged between the base plate lock button and the protective cover, the protective cover can rotate around a rotating shaft and slide to be opened and is positioned in the open state through the slope positioning structure to expose the base plate lock button for screwing operation, or the first clasp and the second clasp are buckled on the base plate lock button to cover the base plate lock button; by adopting the quick-change bottom plate assembly, the protective cover is stably kept in a closed or opened state, and can achieve an elastic opening or closing effect through the inclined plane positioning structure in the switching process of closing and opening actions;
(8) the sander with the function of quickly changing the base plate is simple in structure, convenient to assemble, stable and efficient in transmission, and capable of achieving positioning and torque transmission between the output shaft and the eccentric shaft;
(9) according to the sander with the function of quickly changing the base plate, the base plate quick-change assembly further comprises the gasket, the gasket is sleeved on the locking end of the base plate locking button, when the base plate locking button and the output end of the output shaft are axially hung and mounted, the gasket is tightly pressed on the lower end face of the eccentric shaft or the lower end face of the inner ring of the base plate bearing, the locking strength can be further improved by using the gasket, and the problem that the base plate locking button is loosened is effectively prevented;
(10) the invention relates to a sander with a function of quickly changing a bottom plate.A support frame is arranged at the lower part of a machine body assembly, the bottom plate assembly comprises a random orbital motion bottom plate and a revolution orbital motion bottom plate, the random orbital motion bottom plate is detachably arranged on an output shaft of the machine body assembly through a bottom plate quick-change component and rotates around an eccentric shaft while revolving around the output shaft; the revolution orbit motion bottom plate is detachably arranged on an output shaft of the machine body assembly through a bottom plate quick-change component, is in positioning fit with the support frame and revolves around the output shaft under the limiting action of the support frame; utilize the support frame to realize being connected of organism and different forms bottom, the organism can cooperate random orbital motion bottom plate and revolution orbital motion bottom plate to use, makes the grinder homoenergetic use under different usage and operational environment, has satisfied the polishing demand of polishing that the consumer is different, makes the grinder have more practicality and functional.
Drawings
Fig. 1 is a combination schematic diagram of a sander with a quick-change soleplate function according to the invention when the sander is matched with different forms of soleplate;
fig. 2 is a schematic diagram of a base plate splitting structure of a sander with a base plate quick-changing function according to the present invention;
fig. 3 is a schematic structural diagram of a machine body part in the sander with a function of quickly changing the base plate according to the present invention;
fig. 4 is a schematic diagram of a disassembled structure of a base plate in the sanding machine with a function of quickly replacing the base plate according to the present invention;
fig. 5 is a schematic structural diagram of a quick-change bottom plate assembly in a sander with a function of quickly changing a bottom plate according to the present invention (with a protective cover opened);
fig. 6 is a schematic structural diagram of a quick-change bottom plate assembly in a sander with a function of quickly changing the bottom plate according to the present invention (the protective cover is closed);
fig. 7 is a schematic view of an assembled state of a sander with a function of quickly replacing a base plate according to the present invention;
fig. 8 is a schematic structural diagram of another soleplate quick-change assembly in the sander with a soleplate quick-change function according to the invention (protective cover closed state);
fig. 9 is a schematic cross-sectional view of another quick-change soleplate assembly in a sander with a quick-change soleplate function according to the invention (with the protective cover closed);
fig. 10 is a schematic structural view of another quick-change soleplate assembly in a sander with a function of quickly changing soleplate according to the invention (protective cover is opened);
fig. 11 is a schematic cross-sectional view of another quick-change soleplate assembly in a sander with a quick-change soleplate function according to the invention (with the protective cover open);
fig. 12 is a schematic sectional view of the mounting structure of the machine body and the base plate in the sander with the function of quickly replacing the base plate according to the present invention;
fig. 13 is a schematic cross-sectional view of a spindle locking mechanism in a sander with a function of quickly changing a base plate according to the present invention (a state of mounting the top of a spindle lock knob);
fig. 14 is a schematic perspective view of a spindle locking mechanism in a sander with a quick-change base plate function according to the present invention (in a state where a spindle lock button is mounted on the top);
fig. 15 is a schematic perspective view of a spindle locking mechanism in a sander with a quick-change base plate function according to the present invention (in a state where a spindle lock button is installed on a side surface).
The reference numerals in the schematic drawings illustrate:
1. a machine body assembly; 1-1, a shell; 1-1-1, heat dissipation holes; 1-1-2, a dust suction port; 1-2, push button switch; 1-2-1, push button baffle; 1-3, a main shaft lock button; 1-3a and a bolt; 1-3b, a return spring; 1-4, an output shaft; 1-4a, a threaded hole; 1-5, positioning a transmission block; 1-5-1, first end face teeth; 1-6, a support frame; 1-7, a fan; 1-8, a lower main shaft bearing; 1-9, a main shaft upper bearing; 1-10, a spindle locking disc; 1-10a, a locking receptacle; 1-11, a motor;
2. a floor assembly; 2A, a triangular bottom plate; 2B, a rectangular bottom plate; 2C, a circular bottom plate; 2-1, a bottom plate main body; 2-1a, a counter sink; 2-1-1, bearing mounting holes; 2-2, a baseplate bearing; 2-3, an eccentric shaft; 2-3-1, second end face teeth; 2-3-2, shaft hole; 2-3-3, a balance weight; 2-4, connecting columns;
3. a bottom plate quick-change assembly; 3-1, a bottom plate lock button; 3-1a, a stud; 3-1-1, ear plates; 3-1-2, a clamping groove; 3-1-1' and a buckle seat; 3-1-2', a first clasp; 3-1-3', a first bevel; 3-2, a gasket; 3-3, a protective cover; 3-3-1, buckling; 3-3-2, avoiding the notch; 3-3-1', a second clasp; 3-3-2', groove; 3-3-3', a chute; 3-3-4', a second bevel; 3-4, a rotating shaft.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
[ example 1]
Referring to fig. 1 and fig. 2, the sander with a function of quickly changing a base plate according to the present embodiment includes a machine body assembly 1, a base plate assembly 2 and a base plate quick-change component 3, wherein the base plate assembly 2 is detachably mounted on the machine body assembly 1 through the base plate quick-change component 3, and the base plate assembly 2 is driven by the machine body assembly 1 to perform polishing and grinding operations. The machine body assembly 1 comprises output shafts 1-4 controlled to rotate and a main shaft locking mechanism used for locking the rotation of the output shafts 1-4 when the bottom plate assembly 2 is disassembled and assembled, the output shafts 1-4 can axially rotate in the machine body assembly 1, and the main shaft locking mechanism can lock the output shafts 1-4 when the output shafts 1-4 do not work, so that the output shafts 1-4 cannot axially rotate, and the bottom plate assembly 2 is convenient to disassemble and assemble. The bottom plate assembly 2 comprises a bottom plate main body 2-1 and an eccentric shaft 2-3 rotatably mounted on the bottom plate main body 2-1, and the eccentric shaft 2-3 can axially rotate relative to the bottom plate main body 2-1. The quick-change bottom plate component 3 is arranged at the bottom of the bottom plate assembly 2 and comprises a bottom plate lock knob 3-1 and a protective cover 3-3, the bottom plate lock knob 3-1 is provided with a knob structure and a locking end capable of being in threaded fit with the output end of the output shaft 1-4, the bottom of the bottom plate main body 2-1 is provided with a counter bore 2-1a for accommodating the quick-change bottom plate component 3, the quick-change bottom plate component 3 is enabled to be sunk into the counter bore 2-1a after being installed, an eccentric shaft hole 2-3-2 (shown in figure 4) is eccentrically arranged on the eccentric shaft 2-3 of the bottom plate assembly 2, and an axis z1 of the shaft hole 2-3-2 is parallel to an axis z2 of the eccentric shaft 2-3, and a certain eccentric distance is arranged between the two axes. When the machine body assembly 1 and the bottom plate assembly 2 are installed, the output end of the output shaft 1-4 or the locking end of the bottom plate locking button 3-1 penetrates through the shaft hole 2-3-2 of the eccentric shaft 2-3, and when the output shaft 1-4 is rotationally locked by the main shaft locking mechanism, the bottom plate locking button 3-1 and the output end of the output shaft 1-4 are screwed in a threaded manner to achieve axial hoisting installation or disassembly of the bottom plate assembly 2. The protective cover 3-3 is arranged on the bottom plate lock knob 3-1, and can be opened to expose the knob structure of the bottom plate lock knob 3-1, so that the bottom plate lock knob 3-1 can be conveniently screwed, and the installation and the disassembly of the bottom plate are realized; or the bottom plate locking button 3-1 is covered by the cover when the sander is closed, so that the bottom plate locking button 3-1 can be prevented from being exposed when the sander is used, potential safety hazards such as hitting hands when the bottom plate locking button rotates are effectively eliminated, and the sander is safer and more reliable to use. The axis of the output shaft 1-4 is coaxial with the axis z1 of the shaft hole 2-3-2, the output shaft 1-4 is in transmission connection with the eccentric shaft 2-3, the output shaft 1-4 drives the eccentric shaft 2-3 to rotate, and further the axis z2 of the eccentric shaft 2-3 makes circular motion around the axis z1, and further drives the bottom plate main body 2-1 to make corresponding plane motion. By adopting the design, the bottom plate and the sander body are detachably connected together from the bottom of the bottom plate by utilizing the bottom plate lock knob 3-1, the bottom plate lock knob 3-1 can be operated more conveniently by utilizing the knob structure, the operation is more convenient and smooth, the axial hanging and the installation of the bottom plate are firm and reliable by matching with the locking of the main shaft locking mechanism to the output shaft 1-4, and the sander has the advantages of simple structure for disassembling and assembling the bottom plate, convenient operation, firm installation, safety, reliability and the like, so that the sander body can be matched with the bottom plates in different forms for use, and a multi-in-one multifunctional sander is formed.
In this embodiment, the spindle locking mechanism has an interlocking function with a starting switch on the machine body assembly 1 for controlling the rotation of the output shaft 1-4, and when the starting switch is in an open state, the spindle locking mechanism is always in a release state for the output shaft 1-4; the spindle lock mechanism can selectively lock the output shafts 1 to 4 when the start switch is in the off state. Namely: when the sander works, the output shaft 1-4 cannot be locked by the main shaft locking mechanism, and when the sander does not work and the bottom plate needs to be disassembled and assembled, the output shaft 1-4 is locked by the main shaft locking mechanism and cannot axially rotate. By adopting the interlocking design, the sander can be always in a release state for the output shafts 1-4 during operation, the sander is prevented from being locked and damaged due to misoperation, and the service stability and the service life of the sander are improved. Specifically, as shown in fig. 1, 13 and 14, the spindle locking mechanism includes a spindle lock knob 1-3 and a spindle lock disk 1-10, the spindle lock disk 1-10 is a circular structure, the spindle lock disk 1-10 is coaxially fixed on an output shaft 1-4, a plurality of lock insertion holes 1-10a are circumferentially distributed on the spindle lock disk 1-10, a latch 1-3a adapted to the lock insertion holes 1-10a is arranged on the spindle lock knob 1-3, the spindle lock knob 1-3 is axially and telescopically arranged on the upper portion of a housing 1-1 of the machine body assembly 1 through a return spring 1-3b, the lock insertion holes 1-10a are circumferentially distributed on an end face of the spindle lock disk 1-10, and the bolt 1-3a of the main shaft lock knob 1-3 is matched with the locking jack 1-10 a. The starting switch on the machine body assembly 1 is a push button switch 1-2, a push button baffle plate 1-2-1 matched with the main shaft lock button 1-3 is arranged on the push button switch 1-2, when the push button switch 1-2 is in an opening state, the push button baffle plate 1-2-1 blocks the main shaft lock button 1-3, so that the main shaft lock button 1-3 cannot be pressed down and is always kept in a release state for the output shaft 1-4; when the push button switch 1-2 is in a closed state, the push button baffle 1-2-1 releases the main shaft lock button 1-3, so that the main shaft lock button 1-3 can be pressed down to enable the bolt 1-3a to be inserted into the corresponding lock jack 1-10a of the main shaft lock disk 1-10 to lock the output shaft 1-4. The push button switch 1-2 and the main shaft lock button 1-3 are both arranged on the upper portion of a shell 1-1 of the machine body assembly 1, a push button baffle plate 1-2-1 is integrally formed on the push button switch 1-2, a bolt 1-3a can be made of metal materials and is integrally injection-molded with the main shaft lock button 1-3 as an insert, a reset spring 1-3b is sleeved on the outer side of the bolt 1-3a, the lower end of the reset spring is abutted against the shell 1-1, and the upper end of the reset spring is abutted against the main shaft lock button 1-3, so that the main shaft lock button 1-3 keeps the upward jacking elastic trend. The spindle lock button 1-3 is arranged in the shell 1-1 in a vertically sliding manner, under the action of the reset spring 1-3b, the lower end face of the bolt 1-3a is higher than the push button baffle 1-2-1, at the moment, the push button switch 1-2 can be pushed from a closed state to an open state, so that the sander is started, at the moment, the push button baffle 1-2-1 moves to the lower end of the bolt 1-3a, when the spindle lock button 1-3 is pressed, the bolt 1-3a is blocked by the push button baffle 1-2-1 and cannot be pressed down, and the output shaft is ensured not to be locked; and when the push button switch 1-2 is in a closed state, the push button baffle 1-2-1 is moved away from the lower end of the bolt 1-3a, at the moment, the spindle lock button 1-3 can be pressed to enable the bolt 1-3a to be inserted into the corresponding lock jack 1-10a of the spindle lock disk 1-10 to realize the locking of the output shaft 1-4, and under the same state, the bolt 1-3a also blocks the moving path of the push button baffle 1-2-1, so that the push button switch 1-2 cannot be switched to an open state. By adopting the matching structure of the spindle lock knob 1-3 and the push knob switch 1-2, the spindle is stable and reliable in locking, simple and compact in structure and flexible and convenient to operate.
In the sander with the function of quickly changing the base plate, the base plate lock knob 3-1 is in threaded fit with the output end of the output shaft 1-4, the threaded fit can be that the output shaft 1-4 adopts internal threads, the base plate lock knob 3-1 adopts external threads, or the output shaft 1-4 adopts external threads, and the base plate lock knob 3-1 adopts internal threads. The former screw-fit structure is preferable particularly in the present embodiment. As shown in the figures 2, 3 and 12, the output end of the output shaft 1-4 is provided with a threaded hole 1-4a, the locking end of the bottom plate locking button 3-1 is a stud 3-1a which is in threaded fit with the threaded hole 1-4a, the stud 3-1a can be used as an insert to be integrally injection-molded with the bottom plate locking button 3-1, and when the body assembly 1 and the bottom plate assembly 2 are installed, the output end of the output shaft 1-4 penetrates through the shaft hole 2-3-2 of the eccentric shaft 2-3 and is in threaded connection with the stud 3-1a of the bottom plate locking button 3-1. By adopting the design, the threaded holes are more conveniently formed on the output shafts 1 to 4, the assembly of the output ends of the output shafts 1 to 4 and the eccentric shafts 2 to 3 on the base plate can be facilitated, and the base plate of the sander is further convenient to disassemble and assemble.
In order to prevent the knob structure of the bottom plate lock knob 3-1 from hurting a user when rotating, a protective cover 3-3 capable of being opened or detached is further arranged on the bottom plate lock knob 3-1, the protective cover 3-3 is used for covering the bottom plate lock knob 3-1 positioned in the countersunk hole 2-1a, potential safety hazards such as hiring hands and the like when the bottom plate lock knob 3-1 rotates are effectively eliminated, and the use is safer and more reliable. As shown in fig. 5 and fig. 6, in this embodiment, the knob structure of the bottom plate lock knob 3-1 is the ear plates 3-1-1 disposed oppositely, and the ear plates 3-1-1 disposed at two sides of the bottom plate lock knob 3-1 are convenient to apply the screwing force from two sides, so that the rotation operation of the bottom plate lock knob 3-1 is easier and smoother, and the screwing and locking are firmer and more reliable. The protective cover 3-3 is rotatably connected with the ear plate 3-1-1 on one side around the rotating shaft 3-4 and is matched with the ear plate 3-1-1 on the other side by adopting a buckle structure, and the protective cover 3-3 can be rotatably opened around the rotating shaft 3-4 to expose the ear plate 3-1-1 or is rotatably buckled on the bottom plate lock knob 3-1 by the buckle structure to cover the ear plate 3-1-1. When the protective cover 3-3 is opened (as shown in fig. 7), the lug plates 3-1-1 on the two sides can be grasped to carry out screwing operation on the stud 3-1a of the bottom plate lock knob 3-1; in the closed state of the protective cover 3-3 (as shown in fig. 12), the fingers of the user can not contact the ear plate 3-1-1, so that the damage of the bottom plate lock button 3-1 to the user can be prevented, and the use safety of the sander is further ensured under the condition of facilitating the disassembly and assembly of the bottom plate. In addition, the protective cover 3-3 is arranged on the bottom plate lock knob 3-1, so that the protective cover and the bottom plate lock knob are connected into a combined piece, scattered component parts are reduced, the protective cover 3-3 is not easy to lose when the bottom plate is disassembled, and the structural design is simpler and more compact. As shown in fig. 5 and 6, the protection cover 3-3 in this embodiment is preferably a circular structure, a circle of inward-turned edge is disposed on the periphery of the protection cover 3-3, a rotation shaft mounting seat is disposed on the inner side of the protection cover 3-3, the ear plate 3-1-1 of the bottom plate lock knob 3-1 is mounted in a gap in the middle of the rotation shaft mounting seat, and the protection cover 3-3 and the bottom plate lock knob 3-1 are connected together through the rotation shaft 3-4. An avoidance notch 3-3-2 for avoiding the corresponding ear plate 3-1-1 is arranged on one side of the inward turning edge body close to the rotating shaft 3-4, so that the protective cover 3-3 has a larger rotation opening angle, a buckle 3-3-1 is arranged on the inner side of one side of the inward turning edge body opposite to the avoidance notch 3-3-2, and a clamping groove 3-1-2 matched with the buckle 3-3-1 is arranged on the corresponding ear plate 3-1-1. By adopting the arrangement, the protective cover 3-3 and the bottom plate lock knob 3-1 are more convenient to manufacture, the opening or closing operation of the protective cover 3-3 is simple, and the smooth protective cover 3-3 can effectively avoid the problem that fingers are injured by the ear plate 3-1-1 when extending into the bottom plate lock knob 3-1.
In the present embodiment, the bottom plate assembly 2 is an assembly assembled as a single body. As shown in figure 4, the upper part of the bottom plate main body 2-1 is provided with a bearing mounting hole 2-1-1, a bottom plate bearing 2-2 is arranged in the bearing mounting hole 2-1-1, the eccentric shaft 2-3 is arranged on the bottom plate main body 2-1 through the bottom plate bearing 2-2, the outer ring of the bearing of the bottom plate bearing 2-2 is in interference fit with the bearing mounting hole 2-1-1, and the eccentric shaft 2-3 is in interference fit with the inner ring of the bottom plate bearing 2-2, so that the bottom plates can be combined into a whole body, and the bottom plates can be conveniently disassembled and assembled. And, the eccentric shaft 2-3 is set up on the bottom plate, the eccentricity on every bottom plate can adopt different designs, thus make the bottom plate of different usage have more suitable eccentricity, make the sander more high-efficient. As shown in FIGS. 3 and 4, in this embodiment, the output end of the output shaft 1-4 can be inserted into and matched with the shaft hole 2-3-2 of the eccentric shaft 2-3, in order to realize the transmission of the two, the lower end of the output shaft 1-4 is fixedly provided with a positioning transmission block 1-5, the positioning transmission block 1-5 can be pressed on the output shaft 1-4 in an interference fit manner, the positioning transmission block 1-5 is provided with a first end face tooth 1-5-1, the top of the eccentric shaft 2-3 is provided with a second end face tooth 2-3-1, when the body assembly 1 and the bottom plate assembly 2 are installed, the first end face tooth 1-5-1 and the second end face tooth 2-3-1 are engaged for transmission, and the positioning and torque transmission between the output shaft 1-4 and the eccentric shaft 2-3 are realized by using the end face teeth, simple structure, the equipment is convenient, and the transmission is stable high-efficient. In order to reduce the running vibration of the sander, a balance block 2-3-3 is also arranged on the eccentric shaft 2-3.
Referring to fig. 2 and 12, in the present embodiment, in order to improve the locking strength of the bottom plate, the bottom plate quick-change assembly 3 further includes a gasket 3-2, the gasket 3-2 is sleeved on the locking end of the bottom plate locking knob 3-1, and when the bottom plate locking knob 3-1 and the output end of the output shaft 1-4 are axially suspended and mounted, the gasket 3-2 is pressed against the lower end surface of the eccentric shaft 2-3 or the lower end surface of the inner ring of the bottom plate bearing 2-2. When the sander works, the whole soleplate quick-change component 3, the eccentric shaft 2-3 and the inner ring of the soleplate bearing 2-2 rotate along with the output shaft 1-4, the locking strength can be further improved by utilizing the gasket 3-2, and the problem that the soleplate lock knob 3-1 is loosened is effectively prevented.
Returning to fig. 1, in the sander with a function of quickly changing a base plate of the present embodiment, a support frame 1-6 is provided at the lower part of a machine body assembly 1, the base plate assembly 2 includes two forms of a random orbital motion base plate and a revolution orbital motion base plate, the random orbital motion base plate is detachably mounted on an output shaft 1-4 of the machine body assembly 1 through a base plate quick change component 3, and rotates around an eccentric shaft 2-3 while revolving around the output shaft 1-4. The random orbital motion base plate is as a circular base plate 2C in figure 1, and is arranged on an output shaft 1-4 of a machine body assembly 1 through a base plate quick-change component 3, the circular base plate 2C is not contacted with a support frame 1-6, when the random orbital motion base plate works, the output shaft 1-4 drives an eccentric shaft 2-3 on the circular base plate 2C to rotate, so that the circular base plate 2C revolves around an axis z1 of the output shaft 1-4, meanwhile, the circular base plate 2C can freely rotate around an axis z2 of the eccentric shaft 2-3 to form random orbital motion, and the rotating speed of the circular base plate 2C is higher at the moment and is more suitable for rough grinding. The revolution orbit movement bottom plate is detachably arranged on output shafts 1-4 of the machine body assembly 1 through a bottom plate quick-change component 3, is in positioning fit with the support frames 1-6, and revolves around the output shafts 1-4 under the limiting action of the support frames 1-6. The revolution orbital motion bottom plate is as shown in a triangular bottom plate 2A and a rectangular bottom plate 2B in figure 1, connecting columns 2-4 matched with support frames 1-6 are arranged on a bottom plate main body 2-1 of the triangular bottom plate 2A and the rectangular bottom plate 2B and are installed on an output shaft 1-4 of a machine body assembly 1 through a bottom plate quick-change component 3, meanwhile, the connecting columns 2-4 on the bottom plate main body 2-1 are connected with the corresponding support frames 1-6, the support frames 1-6 are of flexible structures and can limit the rotation of the bottom plate, so that the bottom plate can only revolve around an axis z1 of the output shaft 1-4 to form revolution orbital motion, and the triangular bottom plate 2A and the rectangular bottom plate 2B are more suitable for fine grinding operation. The shape of the base plate is not limited to the triangular base plate 2A, the rectangular base plate 2B, and the circular base plate 2C described above according to the use environment. The machine body assembly 1 can be matched with a random orbital motion bottom plate and a revolution orbital motion bottom plate to form an all-in-one sander. By adopting the design, whether the bottom plate moves in a manner of being matched with the support frames 1-6 or not can be selected according to different forms of the bottom plate, so that the sander can be used under different purposes and operating environments, different polishing and polishing requirements of consumers are met, and the sander has higher practicability and functionality. Moreover, each bottom plate is provided with an eccentric shaft 2-3, so that the eccentricity of different bottom plates can adopt different designs.
In the sander with the function of quickly changing the base plate, the output shaft 1-4 of the sander is driven by the motor 1-11 arranged inside the shell 1-1 of the sander body assembly 1, the motor 1-11 and the output shaft 1-4 can be transmitted by adopting an intermediate transmission mechanism such as a gear transmission mechanism and the like, or a rotor shaft of the motor 1-11 can be used as the output shaft 1-4, two ends of the output shaft 1-4 are respectively supported in the shell 1-1 through bearings, namely, the lower end of the output shaft 1-4 is supported through the lower bearing 1-8 of the main shaft, and the upper end is supported through the upper bearing 1-9 of the main shaft, so that the output shaft 1-4 can stably rotate. The output shaft 1-4 is also provided with a fan 1-7, the fan 1-7 in the embodiment is a dual-function fan, namely the fan 1-7 is provided with an upper set of fan blades and a lower set of fan blades, the lower fan blades are used for dust collection, the upper fan blades are used for heat dissipation in the machine body, the shell 1-1 is also provided with a heat dissipation hole 1-1-1 communicated with a motor cavity where the upper fan blades are located, and the heat dissipation hole 1-1-1 can be used for quickly dissipating heat in the machine body; the shell 1-1 is also provided with a dust collection port 1-1-2 communicated with a lower cavity chamber where the lower fan blades are positioned, and the dust collection port is used for being connected with a dust collection box and facilitating the collection of grinding and polishing dust. In addition, the sander of the present embodiment may also be powered by ac power or dc power, which is similar to the prior art and will not be described herein.
[ example 2]
The basic structure and the working principle of the sander with the function of quickly changing the base plate in this embodiment are the same as those in embodiment 1, except that:
in this embodiment, as shown in fig. 15, the spindle lock knob 1-3 of the spindle lock mechanism is disposed at the side of the machine body assembly 1, which enables the overall height of the sander to be smaller, and the sander to be more compact. Specifically, the spindle locking mechanism comprises a spindle locking knob 1-3 and a spindle locking disk 1-10, the spindle locking disk 1-10 is a circular structure, the spindle locking disk 1-10 is coaxially fixed on an output shaft 1-4, a plurality of locking jacks 1-10a are arranged on the side surface of the spindle locking disk 1-10, in this embodiment, two locking jacks 1-10a are oppositely arranged on the spindle locking disk 1-10, a bolt 1-3a matched with the locking jacks 1-10a is arranged on the spindle locking knob 1-3, the spindle locking knob 1-3 is axially and telescopically arranged on the side surface of a shell 1-1 of the machine body assembly 1 through a return spring 1-3b, and the bolts 1-3a of the main shaft lock buttons 1-3 are matched with a plurality of locking jacks 1-10a arranged on the side surface of the main shaft locking disk 1-10. A push button baffle plate 1-2-1 on the push button switch 1-2 extends to the side surface of the main shaft locking disc 1-10, when the push button switch 1-2 is in an opening state, the push button baffle plate 1-2-1 blocks the main shaft locking button 1-3, so that the main shaft locking button 1-3 cannot be pressed down and is always kept in a release state for the output shaft 1-4; when the push button switch 1-2 is in a closed state, the push button baffle 1-2-1 releases the main shaft lock button 1-3, so that the main shaft lock button 1-3 can be pressed down to enable the bolt 1-3a to be inserted into the corresponding lock jack 1-10a of the main shaft lock disk 1-10 to lock the output shaft 1-4. The push button switch 1-2 can be arranged at the upper part of the shell 1-1 of the machine body assembly 1, the push button baffle plate 1-2-1 is integrally formed on the push button switch 1-2, the reset spring 1-3b is sleeved at the outer side of the bolt 1-3a, one side of the reset spring is abutted against the shell 1-1, and the other side of the reset spring is abutted against the main shaft lock button 1-3, so that the main shaft lock button 1-3 keeps the elastic trend of being jacked towards the side surface. The spindle lock knob 1-3 is arranged in the shell 1-1 in a left-right sliding manner, under the action of the reset spring 1-3b, the end face of the bolt 1-3a is moved to the outer side of the push knob baffle 1-2-1, at the moment, the push knob switch 1-2 can be pushed to an open state from a closed state, so that the sander is started, at the moment, the push knob baffle 1-2-1 is moved to a position between the bolt 1-3a and the spindle locking disk 1-10, when the spindle lock knob 1-3 is pressed, the bolt 1-3a is blocked by the push knob baffle 1-2-1 and cannot be pressed down, and the output shaft is ensured not to be locked; when the push button switch 1-2 is in a closed state, the push button baffle 1-2-1 is moved away from the position between the bolt 1-3a and the spindle locking disk 1-10, at the moment, the spindle locking button 1-3 can be pressed to enable the bolt 1-3a to be inserted into the corresponding locking jack 1-10a of the spindle locking disk 1-10, so that the output shaft 1-4 is locked, and in the state, the bolt 1-3a also blocks the moving path of the push button baffle 1-2-1, so that the push button switch 1-2 cannot be switched to an open state. By adopting the matching structure of the spindle lock knob 1-3 and the push knob switch 1-2, the spindle is stable and reliable in locking, simple and compact in structure and flexible and convenient to operate.
[ example 3]
The basic structure and the working principle of the sander with the function of quickly replacing the base plate in the embodiment are the same as those in the embodiments 1 and 2, and the differences are that:
in this embodiment, the quick-change soleplate assembly 3 takes another form of construction. As shown in fig. 8 to 11, a snap seat 3-1-1 'is provided on one side of a bottom plate lock knob 3-1', a first snap hook 3-1-2 'is provided on the snap seat 3-1', a rotating shaft 3-4 perpendicular to the axial direction of the bottom plate lock knob 3-1 is provided on the bottom plate lock knob 3-1', a rotating seat is provided on the inner side of a protection cover 3-3, a sliding slot 3-3-3' is provided on the rotating seat, the sliding slot 3-3-3 'is a waist-shaped slot structure parallel to the lower end surface of the protection cover 3-3, two ends of the rotating shaft 3-4 are slidably provided in the sliding slot 3-3-3' to enable the protection cover 3-3 to rotate and slide relative to the bottom plate lock knob 3-1, a second snap hook 3-3-1 'matched with the first snap hook 3-1-2' is provided on one side of the protection cover 3-3, a groove 3-3-2 'is arranged on the opposite side of the second clasp 3-3-1', and an inclined plane positioning structure for positioning the protective cover 3-3 in an open state is also arranged between the bottom plate lock knob 3-1 and the protective cover 3-3; the protective cover 3-3 can rotate and slide around the rotating shaft 3-4 to be opened and is positioned in an opened state through the inclined plane positioning structure so as to expose the bottom plate lock knob 3-1 to carry out screwing operation, or is buckled on the bottom plate lock knob 3-1 through the first clasp 3-1-2 'and the second clasp 3-3-1' to cover the bottom plate lock knob 3-1. By adopting the bottom plate quick-change component 3, the protective cover 3-3 can be stably kept in a closed or opened state, and can achieve an elastic opening or closing effect through the inclined plane positioning structure in the switching process of closing and opening actions, after the protective cover 3-3 is closed, the buckling is stable and reliable, and the problem that fingers extend into the bottom plate lock knob 3-1 and are injured can be effectively avoided; after the bottom plate locking button is opened, the bottom plate locking button can be stably positioned at a vertical position and can be used as a screwing operation part of the bottom plate locking button, and the bottom plate locking button is convenient to disassemble and assemble. Specifically, as shown in fig. 8 to 11, a first inclined surface 3-1-3' is provided at an opposite side of the bottom plate lock knob 3-1 and the first hook 3-1-2', a second inclined surface 3-3-4' is provided at a bottom of the groove 3-3-2', when the protection cover 3-3 is in a closed state (as shown in fig. 8 and 9), the rotating shaft 3-4 abuts against one end of the sliding groove 3-3-3', and the first hook 3-1-2' and the second hook 3-3-1' are engaged at the same time, so that the protection cover 3-3 is stably engaged with the bottom plate lock knob 3-1, and at this time, a bottom surface of the bottom plate lock knob 3-1 is flush with an inner side surface of the protection cover 3-3; when the protective cover 3-3 is opened, the first clasp 3-1-2' and the second clasp 3-3-1' are forcibly forced to unlock and the protective cover 3-3 is rotated, in the process, due to the material extrusion between the protective cover 3-3 and the bottom plate lock knob 3-1, the protective cover 3-3 is forced to bounce and slide towards the other side of the chute 3-3-3', the first inclined surface 3-1-3' and the second inclined surface 3-3-4' are matched and stably kept in the opened state to form the state shown in fig. 10 and 11, and since the protective cover 3-3 is stably kept in the opened state and cannot be rotated and slid at will, the protective cover 3-3 can be used as a rotating operation part of the bottom plate lock knob 3-1 to facilitate the screwing operation of the bottom plate lock knob 3-1, the bottom plate can be disassembled and replaced without special tools. The protective cover 3-3 and the bottom plate lock knob 3-1 are connected into a combined piece, so that scattered component parts are reduced, the protective cover 3-3 is not easy to lose when the bottom plate is disassembled, and the structural design is simpler and more compact.
According to the sander with the function of quickly changing the base plate, the base plate and the sander body are detachably connected together from the bottom of the base plate through the base plate locking button, the base plate locking button can be operated more conveniently through the knob structure, the sander is more convenient and smooth to operate, the output shaft is locked through the main shaft locking mechanism, the axial hanging and the mounting of the base plate can be guaranteed to be firm and reliable, the sander has the advantages of being simple in base plate dismounting structure, convenient to operate, firm in mounting and the like, the sander body can be matched with base plates in different forms to use, and the multifunctional sander with multiple functions is formed. In addition, the spindle locking mechanism can form an interlocking effect with a starting switch on the sander body, the sander can be always in a release state on the output shaft when running, and the sander is prevented from being locked and damaged due to misoperation. Moreover, the bottom plate lock button can be covered by the protective cover, so that potential safety hazards such as hiring hands and the like when the bottom plate lock button rotates are effectively eliminated, and the use is safer and more reliable.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (10)

1. The utility model provides a grinder with quick change bottom plate function, includes organism assembly (1), bottom plate assembly (2) and bottom plate quick change subassembly (3), bottom plate assembly (2) install on organism assembly (1) through bottom plate quick change subassembly (3) detachably, organism assembly (1) including controlled rotary motion's output shaft (1-4) and be used for the main shaft locking mechanical system with output shaft (1-4) rotary motion locking when dismouting bottom plate assembly (2), bottom plate assembly (2) include bottom plate main part (2-1) and rotate eccentric shaft (2-3) of installing on bottom plate main part (2-1), its characterized in that:
the quick-change bottom plate component (3) is arranged at the bottom of the bottom plate assembly (2) and comprises a bottom plate lock knob (3-1) and a protective cover (3-3), the bottom plate lock knob (3-1) is provided with a knob structure and a locking end which can be in threaded fit with the output end of the output shaft (1-4), the bottom of the bottom plate main body (2-1) is provided with a countersunk hole (2-1a) for accommodating the quick-change bottom plate component (3), an eccentric shaft hole (2-3-2) is eccentrically arranged on the eccentric shaft (2-3) of the bottom plate assembly (2), when the body assembly (1) and the bottom plate assembly (2) are installed, the output end of the output shaft (1-4) or the locking end of the bottom plate lock knob (3-1) penetrates through the shaft hole (2-3-2) of the eccentric shaft (2-3), when the output shaft (1-4) is rotationally locked by the main shaft locking mechanism, the axial hoisting installation or disassembly of the bottom plate assembly (2) is realized by screwing the bottom plate locking button (3-1) and the output end of the output shaft (1-4) in a threaded manner; the protective cover (3-3) is arranged on the bottom plate lock knob (3-1) and can expose the knob structure of the bottom plate lock knob (3-1) through opening or cover the bottom plate lock knob (3-1) through closing.
2. The sander with quick-change base plate function as set forth in claim 1, wherein: the interlocking function is realized between the main shaft locking mechanism and a starting switch which is arranged on the machine body assembly (1) and used for controlling the rotary motion of the output shaft (1-4), and when the starting switch is in an opening state, the main shaft locking mechanism is always in a releasing state of the output shaft (1-4); when the starting switch is in a closed state, the spindle locking mechanism can selectively lock the output shafts (1-4).
3. The sander with quick-change base plate function as set forth in claim 2, wherein: the main shaft locking mechanism comprises a main shaft locking button (1-3) and a main shaft locking disc (1-10), the main shaft locking disc (1-10) is coaxially fixed on an output shaft (1-4), a bolt (1-3a) is arranged on the main shaft locking button (1-3), the main shaft locking button (1-3) is axially and telescopically arranged on the upper part of a shell (1-1) of the machine body assembly (1) through a reset spring (1-3b), and the bolt (1-3a) of the main shaft locking button (1-3) is matched with a plurality of locking jacks (1-10a) which are circumferentially distributed on the main shaft locking disc (1-10); or the main shaft lock knob (1-3) is axially and telescopically arranged on the side surface of the shell (1-1) of the machine body assembly (1) through a return spring (1-3b), and a bolt (1-3a) of the main shaft lock knob (1-3) is matched with a plurality of locking jacks (1-10a) arranged on the side surface of the main shaft locking disk (1-10); the starting switch on the machine body assembly (1) is a push button switch (1-2), the push button switch (1-2) is provided with a push button baffle (1-2-1) matched with the main shaft lock button (1-3), and when the push button switch (1-2) is in an opening state, the push button baffle (1-2-1) blocks the main shaft lock button (1-3), so that the main shaft lock button (1-3) cannot be pressed down and is always kept in a release state for the output shaft (1-4); when the push button switch (1-2) is in a closed state, the push button baffle (1-2-1) releases the main shaft lock button (1-3), so that the main shaft lock button (1-3) can be pressed down to enable the bolt (1-3a) to be inserted into the corresponding lock jack (1-10a) of the main shaft lock disk (1-10) to lock the output shaft (1-4).
4. The sander with quick-change base plate function as set forth in claim 1, wherein: the output end of the output shaft (1-4) is provided with a threaded hole (1-4a), the locking end of the bottom plate locking knob (3-1) is a stud (3-1a) in threaded fit with the threaded hole (1-4a), and when the machine body assembly (1) and the bottom plate assembly (2) are installed, the output end of the output shaft (1-4) penetrates through the shaft hole (2-3-2) of the eccentric shaft (2-3) and is in threaded connection with the stud (3-1a) of the bottom plate locking knob (3-1).
5. The sander with quick-change base plate function as set forth in claim 1, wherein: the rotary knob structure of the bottom plate lock knob (3-1) is ear plates (3-1-1) which are arranged oppositely, the protective cover (3-3) is rotatably connected with the ear plate (3-1-1) on one side around a rotating shaft (3-4) and is matched with the ear plate (3-1-1) on the other side by adopting a buckle structure, and the protective cover (3-3) can be rotatably opened around the rotating shaft (3-4) to expose the ear plate (3-1-1) or is rotatably buckled on the bottom plate lock knob (3-1) by the buckle structure to cover the ear plate (3-1-1).
6. The sander with quick-change base plate function as set forth in claim 5, wherein: the protective cover (3-3) is of a circular structure, a circle of inward turning edge body is arranged on the periphery of the protective cover (3-3), an avoidance notch (3-3-2) for avoiding the corresponding ear plate (3-1-1) is formed in one side, close to the rotating shaft (3-4), of the inward turning edge body, a buckle (3-3-1) is arranged on the inner side of one side, opposite to the avoidance notch (3-3-2), of the inward turning edge body, and a clamping groove (3-1-2) matched with the buckle (3-3-1) is formed in the ear plate (3-1-1) on the corresponding side.
7. The sander with quick-change base plate function as set forth in claim 1, wherein: one side of the bottom plate lock button (3-1) is provided with a buckle seat (3-1-1'), the buckle seat (3-1-1') is provided with a first clasp (3-1-2'), the bottom plate lock button (3-1) is provided with a rotating shaft (3-4) which is vertical to the axial direction of the bottom plate lock button (3-1), the inner side of the protective cover (3-3) is provided with a rotating seat, the rotating seat is provided with a sliding groove (3-3-3'), two ends of the rotating shaft (3-4) are slidably arranged in the sliding groove (3-3-3'), one side of the protective cover (3-3) is provided with a second clasp (3-3-1') which is matched with the first clasp (3-1-2'), a groove (3-3-2') is arranged on the opposite side of the second clasp (3-3-1'), and an inclined plane positioning structure for positioning the protective cover (3-3) in an opening state is further arranged between the bottom plate lock knob (3-1) and the protective cover (3-3); the protective cover (3-3) can rotate around the rotating shaft (3-4), slide to be opened and is positioned in an opening state through the inclined plane positioning structure so as to expose the bottom plate lock button (3-1) to carry out screwing operation, or the first clasp (3-1-2') and the second clasp (3-3-1') are buckled on the bottom plate lock button (3-1) to cover the bottom plate lock button (3-1).
8. The sander with quick-change base plate function as set forth in claim 1, wherein: the upper part of the bottom plate main body (2-1) is provided with a bearing mounting hole (2-1-1), a bottom plate bearing (2-2) is arranged in the bearing mounting hole (2-1-1), the eccentric shaft (2-3) is arranged on the bottom plate main body (2-1) through a bottom plate bearing (2-2), the lower end of the output shaft (1-4) is fixedly provided with a positioning transmission block (1-5), the positioning transmission block (1-5) is provided with a first end face tooth (1-5-1), the top of the eccentric shaft (2-3) is provided with a second end face tooth (2-3-1), when the machine body assembly (1) and the bottom plate assembly (2) are installed, the first end face teeth (1-5-1) and the second end face teeth (2-3-1) are in meshing transmission.
9. The sander with quick-change sole plate function as set forth in claim 8, wherein: the quick-change bottom plate assembly (3) further comprises a gasket (3-2), the gasket (3-2) is sleeved on the locking end of the bottom plate locking button (3-1), and when the bottom plate locking button (3-1) and the output end of the output shaft (1-4) are axially hung and mounted, the gasket (3-2) is pressed on the lower end face of the eccentric shaft (2-3) or the lower end face of the inner ring of the bottom plate bearing (2-2).
10. The sander with quick-change sole plate function as set forth in any one of claims 1 to 9, wherein: the lower part of the machine body assembly (1) is provided with a support frame (1-6), the bottom plate assembly (2) comprises a random orbital motion bottom plate and a revolution orbital motion bottom plate, the random orbital motion bottom plate is detachably arranged on an output shaft (1-4) of the machine body assembly (1) through a bottom plate quick-change assembly (3), and rotates around an eccentric shaft (2-3) while revolving around the output shaft (1-4); the revolution orbit movement bottom plate is detachably arranged on output shafts (1-4) of the machine body assembly (1) through a bottom plate quick-change assembly (3), is in positioning fit with the support frames (1-6), and revolves around the output shafts (1-4) under the limiting action of the support frames (1-6); the machine body assembly (1) can be matched with the random orbital motion bottom plate and the revolution orbital motion bottom plate to form the all-in-one sander.
CN202210428557.XA 2022-04-22 2022-04-22 Grinder with quick change bottom plate function Active CN114871916B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202210428557.XA CN114871916B (en) 2022-04-22 2022-04-22 Grinder with quick change bottom plate function
DE202023100068.1U DE202023100068U1 (en) 2022-04-22 2023-01-09 Grinder with quickly exchangeable grinding base plate
FR2300980A FR3134736B3 (en) 2022-04-22 2023-02-02 A type of sander with quick change base plate

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Application Number Priority Date Filing Date Title
CN202210428557.XA CN114871916B (en) 2022-04-22 2022-04-22 Grinder with quick change bottom plate function

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CN114871916B CN114871916B (en) 2023-06-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117773726B (en) * 2024-02-23 2024-04-26 连云港远洋流体装卸设备有限公司 Hull sheet metal part polishing device

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CN1288406A (en) * 1998-11-12 2001-03-21 罗伯特·博施有限公司 Power operated portable grinder
US20030114092A1 (en) * 2001-12-17 2003-06-19 Hans Rupprecht Tool receptacle for a grinding tool
CN101264578A (en) * 2007-03-14 2008-09-17 苏州宝时得电动工具有限公司 Power tool
KR101578730B1 (en) * 2014-09-22 2015-12-21 계양전기 주식회사 Grinder Wheel Locking Apparatus
CN206464951U (en) * 2017-02-20 2017-09-05 浙江荣鹏气动工具有限公司 A kind of clamping device of Pneumatic angle grinder
CN209970385U (en) * 2019-04-29 2020-01-21 佛山市森德威机械有限公司 Eccentric quick change structure of abrasive disc
DE102018219620A1 (en) * 2018-11-16 2020-05-20 Robert Bosch Gmbh Orbital sander
CN111791128A (en) * 2019-04-08 2020-10-20 金华市金顺工具有限公司 Multifunctional grinding machine
CN215092758U (en) * 2021-07-07 2021-12-10 常州赛迪工具有限公司 Quick-assembling mechanism for sander base plate and electric sander

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1288406A (en) * 1998-11-12 2001-03-21 罗伯特·博施有限公司 Power operated portable grinder
US20030114092A1 (en) * 2001-12-17 2003-06-19 Hans Rupprecht Tool receptacle for a grinding tool
CN101264578A (en) * 2007-03-14 2008-09-17 苏州宝时得电动工具有限公司 Power tool
KR101578730B1 (en) * 2014-09-22 2015-12-21 계양전기 주식회사 Grinder Wheel Locking Apparatus
CN206464951U (en) * 2017-02-20 2017-09-05 浙江荣鹏气动工具有限公司 A kind of clamping device of Pneumatic angle grinder
DE102018219620A1 (en) * 2018-11-16 2020-05-20 Robert Bosch Gmbh Orbital sander
CN111791128A (en) * 2019-04-08 2020-10-20 金华市金顺工具有限公司 Multifunctional grinding machine
CN209970385U (en) * 2019-04-29 2020-01-21 佛山市森德威机械有限公司 Eccentric quick change structure of abrasive disc
CN215092758U (en) * 2021-07-07 2021-12-10 常州赛迪工具有限公司 Quick-assembling mechanism for sander base plate and electric sander

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FR3134736A3 (en) 2023-10-27
FR3134736B3 (en) 2024-04-05
CN114871916B (en) 2023-06-06
DE202023100068U1 (en) 2023-01-26

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