CN114310586B - Grinding type electric tool - Google Patents
Grinding type electric tool Download PDFInfo
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- CN114310586B CN114310586B CN202011027602.8A CN202011027602A CN114310586B CN 114310586 B CN114310586 B CN 114310586B CN 202011027602 A CN202011027602 A CN 202011027602A CN 114310586 B CN114310586 B CN 114310586B
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- 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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Abstract
The invention discloses a grinding type electric tool. The grinding type electric tool includes: a housing including a grip portion for being held by a user; the motor is arranged in the shell; the output shaft is connected with the motor and can rotate around the first axis under the driving of the motor; the output shaft includes a mounting portion; the angle grinder clamping assembly is detachably connected with the mounting part and rotates around a first axis under the drive of the output shaft, the angle grinder clamping assembly comprises a first clamping piece and a second clamping piece which are oppositely arranged along the direction of the first axis, and the first clamping piece and the second clamping piece are used for clamping working accessories; the direct grinding chuck component can be detachably connected with the output shaft mounting part, and can clamp the direct grinding head to rotate around the first axis. The output shaft of the grinding electric tool can be connected with the angle grinding clamping component and can also be connected with the direct grinding chuck component, and the angle grinding clamping component and the direct grinding chuck component can realize that one grinding electric tool can switch the direct grinding function and the angle grinding function.
Description
Technical Field
The invention relates to the technical field of mechanical structures, in particular to a grinding type electric tool.
Background
The grinding type electric tool includes an angle grinder, a straight grinder, and the like. The angle grinder is characterized in that the grinding disc is connected to the angle grinder through the angle grinder clamping assembly, the angle grinder clamping assembly is connected to an output shaft of the angle grinder, and the grinding disc is fixed on the angle grinder clamping assembly. The straight grinding head of the straight grinding machine is connected to the straight grinding machine through the straight grinding chuck component, the straight grinding chuck component is connected to an output shaft of the straight grinding machine, and the straight grinding head is fixed on the straight grinding chuck component. Because the angle grinder clamping assembly and the output shaft are connected in a different mode from the direct grinder chuck assembly, in the prior art, the same grinding type electric tool can only be connected with the angle grinder clamping assembly or only can be connected with the direct grinder chuck assembly, and the angle grinder function and the direct grinder function cannot be switched. Although a few grinding type electric tools can be connected with the angle grinding clamping assembly and the direct grinding clamping assembly at the same time to switch the angle grinding function and the direct grinding function, the switching structure is complex, the operation is inconvenient, and the cost is high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a grinding electric tool which can switch an angle grinding function and a direct grinding function, has a simple structure and is convenient to operate.
The grinding type electric tool includes:
a housing including a grip portion for being held by a user;
the motor is arranged in the shell;
the output shaft is connected with the motor and can rotate around a first axis under the driving of the motor;
the output shaft includes a mounting portion;
the angle grinder clamping assembly is detachably connected with the mounting part and rotates around the first axis under the drive of the output shaft, the angle grinder clamping assembly comprises a first clamping piece and a second clamping piece which are oppositely arranged along the direction of the first axis, and the first clamping piece and the second clamping piece are used for clamping working accessories;
the direct grinding chuck component can be detachably connected with the mounting part of the output shaft, and the direct grinding chuck component can clamp a direct grinding head to rotate around the first axis.
Optionally, the first clamping member has a first end and a second end along the first axial direction, the first end and the second clamping member are detachably connected to the fastening member, the second end is provided with a sleeve-shaped connecting portion, and the connecting portion is detachably connected to the output shaft.
Optionally, an internal thread is arranged on the inner side wall of the connecting portion, the mounting portion includes an external thread arranged on an outer shaft of the output shaft, and the connecting portion is connected with the output shaft through the internal thread and the external thread.
Optionally, the end of the output shaft is provided with a tapered hole extending along the first axis direction, and the output shaft can pass through the mounting portion and the tapered hole and be connected with the direct grinding chuck assembly, so that the output shaft drives the direct grinding chuck assembly to rotate around the first axis.
Optionally, the direct grinding chuck assembly includes:
the straight grinding head is cylindrical;
the straight grinding head is arranged in the mounting hole, a through groove extending along the axial direction of the chuck is formed in the side wall of the chuck, so that the side wall of the chuck can be tightened towards the center to clamp the straight grinding head, the outer side surface of the side wall of the chuck is in a wedge shape, and the outer side surface of the side wall of the chuck can be matched with the wedge-shaped hole;
the retaining member, the retaining member is the cover tube-shape, the installation department is including setting up the external screw thread in the outer axle of output shaft, the inside wall of retaining member be provided with can with the external screw-thread fit's of output shaft periphery internal thread, the retaining member makes through the cooperation of internal and external screw thread the chuck is locked in the wedge hole.
Optionally, the mounting portion includes an external thread provided on the output shaft outer shaft.
Optionally, the angle grinder clamping assembly is provided with a fastener for connecting the first clamping piece and the second clamping piece, the fastener is a screw, and the screw sequentially penetrates through the second clamping piece and the first clamping piece.
Optionally, the casing further includes a head casing, the motor is disposed in the head casing, a protective cover is disposed at one end of the head casing corresponding to the output shaft, the protective cover can rotate around the first axis, and a locking member is disposed on the head casing and can limit the protective cover to rotate in the opposite direction.
Optionally, the locking member may slide in the head casing along the first axial direction to enable the locking member to contact with or separate from the protective cover, an elastic member is disposed in the head casing, the elastic member enables the locking member to have a pretightening force for contacting with the protective cover, the locking member disengages from the protective cover when being toggled to release the limitation on the protective cover, so that the protective cover can rotate reversely, and the locking member can reset under the pretightening force of the elastic member to recover the limitation on the reverse rotation of the protective cover.
Optionally, the first axis is perpendicular to the extending direction of the handle portion.
An abrasive type power tool comprising:
a housing including a grip portion for being held by a user;
the motor is arranged in the shell and can rotate around a first axis;
the output shaft is connected with the motor and can rotate around a first axis under the driving of the motor;
the output shaft includes a mounting portion;
the angle grinder clamping assembly can be connected with the mounting portion of the output shaft and winds the first axis under the driving of the output shaft, the angle grinder clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are arranged in the first axis direction in a relative mode, the first clamping piece and the second clamping piece are used for clamping the disc-shaped wheel piece, and the angle grinder clamping assembly is detachably connected with the mounting portion.
The invention has the advantages that: the output shaft of the grinding electric tool is provided with the installation part, and the angle grinding clamping component and the direct grinding chuck component are detachably connected with the installation part, so that the grinding electric tool can switch the direct grinding function and the angle grinding function, has a simple structure, is convenient to switch, can realize quick switching, is beneficial to improving the working efficiency of an operator, and has lower cost.
Drawings
FIG. 1 is a schematic diagram of an abrasive-type power tool embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the angle grinder assembly of the present invention in connection with an output shaft;
FIG. 4 is a schematic structural view of an embodiment of the angle grinder clamp assembly of the present invention;
FIG. 5 is a schematic view of the present invention showing the assembly of the angle grinder clamping assembly with a grinding plate;
FIG. 6 is a schematic view of the arrangement of the direct grinding chuck assembly connected with the output shaft in the present invention;
FIG. 7 is a schematic structural view of a straight grinding chuck assembly of the present invention;
FIG. 8 is a schematic cross-sectional view of the structure of FIG. 7 in accordance with the present invention;
FIG. 9 is a schematic view of another embodiment of an abrasive type power tool according to the present invention;
fig. 10 is a schematic view of the structure of fig. 9 with the housing removed in accordance with the present invention.
In the figure:
100. a grinding-type electric tool; 101. a first axis;
200. a housing; 210. a handle portion; 220. a head shell; 221. a locking member; 222. an elastic member; 223. a toggle button is pushed; 224. a bayonet lock; 225. an air inlet; 226. an air outlet;
300. a motor;
400. an output shaft; 410. a tapered hole;
500. an angle grinder clamping assembly; 510. a first clamping member; 511. a connecting portion; 512. a central boss; 520. a second clamping member; 521. pressing edges; 530. a fastener; 540. a working attachment; 550. a gasket;
600. directly grinding the chuck component; 610. a straight grinding head; 620. a chuck; 621. a through groove; 630. a locking member;
700. a power assembly;
800. a shield; 810. a clamping groove.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
The invention discloses a grinding electric tool, please refer to fig. 1 to fig. 3, the grinding electric tool 100 includes a housing 200 and a motor 300 disposed in the housing 200, an output end of the motor 300 is connected with an output shaft 400, the output shaft 400 is used for connecting grinding accessories such as an angle grinding clamping assembly 500 or a straight grinding clamping head assembly 600, etc. to realize the angle grinding function or the straight grinding function, and the output shaft 400 can rotate around a first axis 101 under the driving of the motor 300. The housing 200 includes a handle portion 210 for a user to hold, and in the present invention, as shown in fig. 1, the handle portion 210 extends in a front-back direction, and the first axis 101 is in a vertical direction, that is, the handle portion 210 is substantially perpendicular to the first axis 101. In other embodiments, the handle portion 210 may also be parallel to the first axis 101. The power assembly 700 may be included in the power tool 100, the power assembly 700 may provide power to the motor 300, and the power assembly 700 may be a battery pack or may be powered by the power tool 100 directly connected to an ac power source.
Specifically, as shown in fig. 1 to 3, the housing 200 may further include a head housing 220, the head housing 220 is disposed at a front end of the handle portion 210, and the head housing 220 and the handle portion 210 may be integrally formed or separately formed, which is not limited herein. The motor 300 is disposed in the head case 220. The power assembly 700 employs a battery pack detachably connected to the rear end of the handle portion 210.
As shown in FIG. 3, the end of the output shaft 400 is provided with a mounting portion, and the angle grinder holding assembly 500 can be connected with the mounting portion of the end of the output shaft 400 and rotate around the first axis 101 under the driving of the output shaft 400. Referring to fig. 3 to 5, the angle grinder assembly 500 includes a first clamping member 510, a second clamping member 520, and a fastening member 530. The first clamping member 510 is disposed opposite the second clamping member 520 in the direction of the first axis 101 to clamp the working attachment 540. The fastener 530 is used to connect the first clamping member 510 and the second clamping member 520, clamp the working accessory 540 between the first clamping member 510 and the second clamping member 520, and lock the second clamping member 520 to the first clamping member 510 through the fastener 530, so that the first clamping member 510, the second clamping member 520 and the working accessory 540 can be assembled into a whole (as shown in fig. 5). Referring to fig. 3, in the present invention, the first clamping member 510 is detachably connected to the output shaft 400, for example, by a screw thread as shown in fig. 3. The installation portion is arranged on the output shaft 400, so that the first clamping piece 510 is detachably connected with the output shaft 400, and the angle grinder clamping assembly 500 can be quickly assembled and disassembled on the output shaft 400. The working attachment 540 may be a circular abrasive sheet, or a circular cutting sheet, and a polishing paper or polishing disk, or the like.
The grinding type electric tool 100 further comprises a straight grinding chuck assembly 600, the straight grinding chuck assembly 600 can be detachably connected with the mounting part of the output shaft 400, and the straight grinding chuck assembly 600 can clamp the straight grinding head 610 to rotate around the first axis 101.
The output shaft 400 of the grinding electric tool 100 is provided with the installation part, and both the angle grinder clamping assembly 500 and the direct grinder clamping head assembly 600 can be detachably connected with the installation part, so that the grinding electric tool 100 can switch the direct grinding function and the angle grinder function, and the angle grinder has the advantages of simple structure, convenience in switching, capability of realizing quick switching, contribution to improving the working efficiency of an operator and lower cost.
Referring to fig. 3 and 6, in order to connect the output shaft 400 to the straight grinding chuck assembly 600, the center of the lower end of the output shaft 400 is provided with a tapered hole 410, and the outer diameter of the output shaft 400 is larger, the conventional angle grinding clamping assembly 500 connects the first clamping member 510 and the second clamping member 520 to the output shaft 400 at the same time, which is limited by the central aperture of the working attachment 540, so that the conventional angle grinding clamping assembly 500 cannot be adapted to the output shaft 400 with the tapered hole 410 at the end and the larger outer diameter. In the invention, only the first clamping piece 510 is detachably connected with the output shaft 400, and the second clamping piece 520 and the working accessory 540 are fixed on the first clamping piece 510 through the fastening piece 530, so that the angle grinding clamping assembly 500 can be adapted to the output shaft 400 which can be connected with the straight grinding chuck assembly 600, the output shaft 400 can be simultaneously connected with the angle grinding clamping assembly 500 and the straight grinding chuck assembly 600, and the same grinding type electric tool 100 can be simultaneously connected with the angle grinding clamping assembly 500 and the straight grinding chuck assembly 600, so that the switching between the angle grinding function and the straight grinding function is realized, one grinding type electric tool 100 can adapt to various working conditions, and the burden of operators is reduced. In addition, the angle grinder clamping assembly 500 can be matched with the output shaft 400 connected with the straight grinding chuck assembly 600 only by locking the second clamping piece 520 of the angle grinder clamping assembly 500 on the first clamping piece 510 through the fastening piece 530 and detachably connecting the first clamping piece 510 with the output shaft 400, so that the angle grinder clamping assembly 500 can be switched between the angle grinder function and the straight grinding function, and the angle grinder clamping assembly is simple in structure and convenient to operate. The invention enables a user to manually or simply realize the disassembly and assembly of the angle grinding clamping assembly 500 and the straight grinding chuck assembly 600 by using auxiliary tools such as a wrench and the like, and does not damage the structures of the output shaft 400, the angle grinding clamping assembly 500 and the straight grinding chuck assembly 600, so that the angle grinding clamping assembly 500 and the straight grinding chuck assembly 600 can be repeatedly replaced, used and disassembled.
The first clamping member 510 has a first end and a second end along the first axis 101, and the first end and the second end are respectively a lower end and an upper end of the first clamping member 510 in fig. 3, please refer to fig. 3 and fig. 4, the first end (lower end) of the first clamping member 510 is connected to the second clamping member 520, the second end (upper end) of the first clamping member 510 is provided with a sleeve-shaped connecting portion 511, and the connecting portion 511 is detachably connected to the output shaft 400.
Referring to fig. 3 and 4, the connection portion 511 and the output shaft 400 may be detachably connected in various ways, and in the present invention, the connection portion 511 and the output shaft 400 are connected by internal and external threads. Specifically, as shown in fig. 3 and 4, an inner thread is provided on an inner side wall of the connection portion 511, and the mounting portion of the output shaft 400 includes an outer thread provided on the outer periphery of the output shaft 400, so that the connection portion 511 is detachably connected to the output shaft 400 from the lower end of the output shaft 400 by the engagement of the inner thread and the outer thread. The provision of a sleeve-shaped coupling portion 511 on the first clamp 510 for releasable attachment to the output shaft 400 allows the angle grinder clamp assembly 500 to be attached to the output shaft 400 without being restricted by the central bore of the working attachment 540, allowing the angle grinder clamp assembly 500 to be fitted to the output shaft 400 for attachment to the straight grinder clamp assembly 600.
In one embodiment, as shown in fig. 5, the fastening member 530 may be a screw, the first clamping member 510 has a threaded hole, the second clamping member 520 has a through hole at the center, and the screw passes through the second clamping member 520 and the first clamping member 510 in sequence to lock the second clamping member 520 to the first clamping member 510.
Referring to fig. 5, the lower end of the first clamping member 510 is provided with a central boss 512, the threaded hole is disposed on the central boss 512, and the length of the threaded hole is longer due to the central boss 512, which is more beneficial to locking the second clamping member 520 on the first clamping member 510. Furthermore, the threaded hole can penetrate through the connecting part 511 from the lower end of the central boss 512, so that the axial space of the first clamping piece 510 can be fully utilized to arrange the threaded hole, the length of the threaded hole is longest, and the locking effect is better. Meanwhile, referring to fig. 3, since the end of the output shaft 400 is provided with the tapered hole 410, the tapered hole 410 may be used to receive a screw, so that the tip of the screw may penetrate into the tapered hole 410 to ensure that the screw has a sufficient length to lock the second clamping member 520, thereby improving the reliability of the assembly.
As shown in fig. 5, the working attachment 540 may be sleeved on the central boss 512, and the central boss 512 is used to limit the working attachment 540, so as to prevent the working attachment 540 from moving. The edge of the second clamping member 520 may be provided with a ring of pressing edge 521 extending toward the working attachment 540, and the pressing edge 521 presses against the working attachment 540 to press the working attachment 540 tightly, so that the working attachment 540 is fixed between the first clamping member 510 and the second clamping member 520.
With continued reference to fig. 5, when the fastening member 530 is a screw, a spacer 550 may be disposed between the head of the screw and the second clamping member 520 to prevent the head of the screw from damaging the second clamping member 520.
Referring to fig. 6 to 8, as mentioned above, the lower end of the output shaft 400 is provided with the tapered hole 410 extending along the first axis 101, and the output shaft 400 can be connected to the straight grinding chuck assembly 600 through the external thread on the outer periphery of the mounting portion and the tapered hole 410, so that the output shaft 400 drives the straight grinding chuck assembly 600 to rotate around the first axis 101.
Referring to fig. 6 to 8, the straight grinding chuck assembly 600 includes a straight grinding head 610, a chuck 620 and a locking member 630. The straight grinding stones 610 are substantially cylindrical. The straight grinding stones 610 are used to perform a grinding operation in contact with the grinding surface. The clamp 620 is used for clamping the straight grinding head 610, a mounting hole for mounting the straight grinding head 610 is formed in the clamp 620, and the straight grinding head 610 is arranged in the mounting hole, as shown in fig. 7, a through groove 621 extending along the axial direction of the clamp 620 is formed in the side wall of the clamp 620, and the through groove 621 enables the side wall of the clamp 620 to be tightened towards the center, so that the straight grinding head 610 is clamped. The through grooves 621 can be provided in plurality as required, the through grooves 621 are uniformly distributed along the circumferential direction of the chuck 620, and the through grooves 621 are provided so that the side wall of the chuck 620 has a larger space folded toward the center, so that the straight grinding head 610 can be clamped more tightly. As shown in fig. 8, the outer side surfaces of the sidewalls of the collet 620 are tapered, and referring to fig. 6, the tapered outer side surfaces are engaged with the tapered hole 410, and when the collet 620 is moved toward the inside of the tapered hole 410 in the direction of the first axis 101 by the locking member 630, the inner walls of the tapered hole 410 press the collet 620 so that the sidewalls of the collet 620 are converged toward the center, thereby clamping the straight grinding stone 610. Referring to fig. 6 and 8, the locking member 630 is sleeve-shaped, similar to the first clamping member 510 of the angle grinder clamping assembly 500. The inner side wall of the locking member 630 is provided with an internal thread capable of being engaged with the external thread of the outer circumference of the mounting portion of the output shaft 400, and the locking member 630 enables the collet 620 to be locked in the tapered hole 410 by the engagement of the internal and external threads, so that the collet 620 clamps the straight grinding stones 610, thereby achieving the connection of the straight grinding stones 610 to the grinding-type electric tool 100.
Referring to fig. 8, the lower end of the locker 630 is caught to the collet 620 such that the locker 630 can move the collet 620. The locking member 630 is provided at a lower end thereof with a protrusion, and the collet 620 is provided with a recess, so that the protrusion is engaged with the collet 620, thereby locking the locking member 630.
An external thread is arranged on the mounting part of the output shaft 400, an internal thread is arranged on the first clamping piece 510 of the angle grinder clamping assembly 500, and the angle grinder clamping assembly 500 is detachably connected to the mounting part of the output shaft 400 through the matching of the internal thread and the external thread, so that the output shaft 400 and the angle grinder clamping assembly 500 can be quickly disassembled and assembled; the external thread is arranged on the mounting part of the output shaft 400, and the tapered hole 410 is arranged at the end part of the output shaft 400, so that the direct grinding chuck assembly 600 and the output shaft 400 can be quickly assembled and disassembled. The above structure enables the output shaft 400 of the present invention to simply and rapidly switch between the direct grinding function and the angle grinding function.
Referring to fig. 9 and 10, a shield 800 is disposed at an end of the head casing 220 corresponding to the output shaft 400, the shield 800 is used for preventing grinding debris from splashing, and the shield 800 can rotate around the first axis 101 to adjust the position of the shield 800. The locking member 221 is disposed on the head casing 220, and the locking member 221 can limit the shield 800 to rotate in a reverse direction, that is, the locking member 221 can only allow the shield 800 to rotate in one direction, which is defined as a forward direction. The rotation direction of the protective cover 800 is opposite to the rotation direction of the grinding accessories such as the angle grinding clamping assembly 500 and the straight grinding chuck assembly 600, so that the protective cover 800 cannot be driven to rotate together when the working accessory 540 or the straight grinding head 610 falls off, the protective cover 800 is ensured to be always kept on the head shell 220, a protective effect is achieved, and safety accidents caused by the falling off of the working accessory 540 or the straight grinding head 610 are avoided.
With continued reference to fig. 9 and 10, the locking member 221 can slide in the head casing 220 along the direction of the first axis 101 to make the locking member 221 contact with or separate from the shield 800, a toggle button 223 for toggling the locking member 221 is disposed on the locking member 221, and the toggle button 223 penetrates out of the head casing 220 to toggle the toggle button 223 from the outside of the head casing 220, so as to drive the locking member 221 to move. An elastic member 222 is disposed in the head casing 220, and the elastic member 222 may be a spring, for example, and the elastic member 222 can bias the locking member 221 to contact the shield 800. When the locking member 221 is toggled, the locking member 221 is separated from the shield 800 to remove the limitation of the shield 800, so that the shield 800 can rotate reversely, when the locking member 221 is released, the locking member 221 can reset under the action of the pretightening force of the elastic member 222, the limitation on the shield 800 is recovered, and the shield 800 cannot rotate reversely.
Specifically, the shield 800 is provided with a plurality of clamping grooves 810 along the circumferential direction thereof, the locking member 221 is provided with the clamping pin 224, the clamping pin 224 of the locking member 221 is clamped in the clamping groove 810 under the action of the pretightening force of the elastic member 222, one of two end surfaces of the clamping groove 810 along the circumferential direction of the shield 800 is an inclined guide surface, and the other end surface is a vertical surface. When the shield 800 rotates forward, the inclined guide surface contacts the bayonet 224, and the inclined guide surface can slide over the bottom end of the bayonet 224 due to the guide effect of the inclined guide surface, so that the shield 800 can be rotated forward; when the shield 800 is rotated reversely, the vertical surface contacts the latch 224 and is locked with the latch 224, so that the shield 800 cannot rotate reversely, and the latch 221 is pushed upwards to disengage the latch 224 from the latch 810, so that the shield 800 can be rotated reversely.
It is understood that the moving direction of the locking member 221 may be along the radial direction of the shield 800.
In order to improve the heat dissipation effect of the motor 300, heat dissipation holes may be formed in the head housing 220. Referring to fig. 1 and 2, an air inlet 225 is disposed at an upper end of the head casing 220, an air outlet 226 is disposed at a lower end of the head casing 220, the air inlet 225 is located above the motor 300, and the air outlet 226 is located below the motor 300, so that a heat dissipation airflow can flow in from above the motor 300 and flow out from below the motor 300 after passing through the motor 300, and the heat dissipation airflow can completely pass through the motor 300, thereby achieving a good heat dissipation effect.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An abrasive type power tool comprising:
a housing including a grip portion for being held by a user;
the motor is arranged in the shell;
the output shaft is connected with the motor and can rotate around a first axis under the driving of the motor;
it is characterized in that the preparation method is characterized in that,
the output shaft comprises a mounting part, and the mounting part comprises an external thread arranged on the periphery of the output shaft;
the abrasive type electric tool further includes:
the angle grinder clamping assembly is detachably connected with the mounting part and rotates around the first axis under the drive of the output shaft, the angle grinder clamping assembly comprises a first clamping piece and a second clamping piece which are oppositely arranged along the direction of the first axis, and the first clamping piece and the second clamping piece are used for clamping working accessories;
the direct grinding chuck component can be detachably connected with the mounting part of the output shaft, and can clamp the direct grinding head to rotate around the first axis;
the direct grinding chuck component comprises:
the clamping head is provided with a mounting hole for mounting the straight grinding head, and the straight grinding head is arranged in the mounting hole;
the retaining member, the inside wall of retaining member be provided with can with the external screw-thread fit's of output shaft periphery internal thread, the retaining member makes through the cooperation of internal and external screw thread the chuck is locked.
2. The abrasive type electric power tool according to claim 1, wherein the first holder has a first end and a second end along the first axial direction, the first end being detachably connected to the second holder by a fastener, the second end being provided with a sleeve-shaped connecting portion, the connecting portion being detachably connected to the output shaft.
3. The abrasive electric power tool according to claim 2, wherein an internal thread is provided on an inner side wall of the connecting portion, the mounting portion includes an external thread provided on an outer periphery of the output shaft, and the connecting portion and the output shaft are connected by the internal thread and the external thread.
4. The power tool as claimed in claim 1, wherein the output shaft has a tapered bore extending along the first axis, and the output shaft is coupled to the straight grinding chuck assembly through the mounting portion and the tapered bore such that the output shaft rotates the straight grinding chuck assembly about the first axis.
5. The grinding electric tool as claimed in claim 4, wherein the side wall of the chuck is provided with a through groove extending in the axial direction of the chuck so that the side wall of the chuck can be tightened toward the center to clamp the straight grinding head, the outer side surface of the side wall of the chuck is wedge-shaped, and the outer side surface of the side wall of the chuck can be matched with the tapered hole; the retaining member is sleeve-shaped, and the retaining member enables the clamping head to be locked in the tapered hole through the matching of internal threads and external threads.
6. The abrasive type power tool as claimed in claim 1, wherein said mounting portion includes an external thread provided on an outer shaft of said output shaft.
7. The abrasive power tool of claim 1, wherein the angle grinder clamp assembly has a fastener for connecting the first clamp and the second clamp, the fastener being a screw that passes through the second clamp and the first clamp in sequence.
8. The abrasive type electric power tool as claimed in claim 1, wherein said housing further includes a head housing, said motor is disposed in said head housing, a protective cover is disposed at an end of said head housing corresponding to said output shaft, said protective cover is rotatable about said first axis, and a lock member is disposed on said head housing, said lock member being capable of restricting reverse rotation of said protective cover.
9. The abrasive type power tool according to claim 8, wherein the lock member is slidable in the head housing along the first axial direction to bring the lock member into contact with or out of contact with the guard, an elastic member is provided in the head housing, the elastic member is capable of imparting a preload force to the lock member to bring the lock member into contact with the guard, the lock member is disengaged from the guard when being pulled to release the restraint on the guard, the guard is allowed to be reversed, and the lock member is capable of returning to its original position under the preload force of the elastic member to restore the restraint on the reversal of the guard.
10. The abrasive type power tool according to claim 1 or 4, wherein the first axis is perpendicular to an extending direction of the handle portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011027602.8A CN114310586B (en) | 2020-09-25 | 2020-09-25 | Grinding type electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011027602.8A CN114310586B (en) | 2020-09-25 | 2020-09-25 | Grinding type electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114310586A CN114310586A (en) | 2022-04-12 |
| CN114310586B true CN114310586B (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011027602.8A Active CN114310586B (en) | 2020-09-25 | 2020-09-25 | Grinding type electric tool |
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| CN (1) | CN114310586B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5347765A (en) * | 1993-02-12 | 1994-09-20 | Mixon Jr Harold W | Device and method for multiple uses of a portable grinder |
| CN210499668U (en) * | 2019-08-24 | 2020-05-12 | 天津海化汽车塑料制品有限公司 | Novel automobile side rear bumper is with processing equipment |
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