CN215743897U - Portable grinding machine - Google Patents

Abstract

A portable grinder relates to the field of grinding devices. The grinding cup comprises a main machine, a grinding cup and a grinding blade connected inside the grinding cup, wherein the main machine comprises a driver and at least one storage battery; the grinding cup is detachably matched with the main machine, and the driver is electrically connected with the storage battery. The portable outdoor power supply is convenient to carry, is particularly suitable for outdoor activities such as camping, field gathering, mountain climbing and the like, gets rid of the limitation of power supply of the plug and the socket, and is more convenient to use. The grinding cup and the base can be matched and separated very conveniently, so that the portable grinding machine is more convenient to assemble and disassemble, the grinding cup can be fully cleaned, and the portable grinding machine has positive significance for keeping cleanliness and reducing cleaning difficulty. Is very suitable for being used as a portable coffee grinder.

Description

Portable grinding machine

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of grinding devices, in particular to a portable grinding machine.

[ background of the utility model ]

At present, current grinder carries inconveniently, hardly satisfies the demand of going out to use, especially camping use, and in addition, current grinder washs also comparatively loaded down with trivial details in the use, and it is not very convenient to use.

In view of this, the present application is specifically made.

[ Utility model ] content

The utility model provides a portable grinding machine, aiming at solving the technical problems that the existing grinding device is inconvenient to carry and tedious to clean.

The present invention provides a portable grinder including: the grinding cup comprises a main machine, a grinding cup and a grinding blade connected to the inside of the grinding cup, wherein the main machine comprises a driver and at least one storage battery; the grinding cup is detachably matched with the main machine, and the driver is electrically connected with the storage battery.

Preferably, the driver comprises a power output part, the grinding blade comprises a blade body and a connecting shaft, the connecting shaft extends out of the bottom of the grinding cup and is connected with the power output part in a rotating mode, and the connecting shaft is detachably connected with the power output part.

Preferably, the driver is a motor, the power output part comprises an output shaft of the motor and an adapter plate connected to the outside of the output shaft, the connecting shaft is fixedly connected with an adapter, one of the adapter plate or the adapter plate is provided with at least one clamping groove, and the other is provided with a clamping block matched with the clamping groove.

Preferably, the main frame further comprises a base, the driver and the storage battery are arranged in the base, the top of the base is open, one of the inner wall of the opening at the top of the base or the outer surface of the bottom of the grinding cup is provided with a connecting groove, the other one is provided with a connecting bulge, and the connecting groove is L-shaped.

Preferably, the grinding cup comprises a cup body and a cup holder, the cup body is made of a metal material, and the cup holder is made of plastic; the cup stand is detachably connected with the bottom of the cup body, the connecting groove or the connecting bulge is arranged on the outer surface of the cup stand, and the adapter is arranged at the bottom of the cup stand and is rotatably connected with the cup stand.

Preferably, the number of the storage batteries is 3, the capacity of each storage battery is 2000mAh, and the total power is 200W.

Preferably, the portable grinder includes an upper cover to be fitted over the grinding cup and an outer cover to be fitted over the grinding cup and the upper cover.

Preferably, the host is further provided with a push switch for controlling the start and stop of the driver; the push switch comprises a switch body, an elastic piece and a pressing block; the pressing block is in sliding fit with the host along the height direction of the host; the elastic piece is matched with the pressing block, and the pressing block is ejected out of the top end of the main machine by the elastic piece in a natural state; when the outer cover is pressed down, the pressing block is pressed down, and the pressing block triggers the switch body to start the driver.

Preferably, the host is further provided with a work indicator light and/or an electric quantity display area, and when the driver works, the work indicator light is turned on; after the driver stops, the working indicator lamp is turned off; the electric quantity display area is used for displaying the percentage of the residual electric quantity.

Preferably, the main machine further has a charging interface for charging the accumulator. Further, the Type of the charging interface is Type C.

The technical scheme of the utility model has the beneficial effects that:

1. the grinding cup and the base can be matched and separated very conveniently, so that the portable grinding machine is more convenient to assemble and disassemble, the grinding cup can be fully cleaned, and the portable grinding machine has positive significance for keeping cleanliness and reducing cleaning difficulty. In addition, the storage battery is adopted for power supply, so that the portable grinding machine is more convenient to carry by traveling, is particularly suitable for outgoing activities such as camping, field gathering, mountain climbing and the like, breaks away from the limitation of power supply of the plug and the socket, and is more convenient to use. Is very suitable for being used as a portable coffee grinder.

2. The grinding cup and the base are in transmission fit through the adapter plate and the adapter, so that the grinding cup is convenient to disassemble and assemble, the clamping blocks and the clamping grooves can smoothly transmit torque, the grinding blade is guaranteed to be smoothly driven, and slipping between the adapter plate and the adapter is avoided.

3. The upper cover covers the grinding cup, and the outer cover covers the grinding cup and the upper cover simultaneously, so that noise can be effectively reduced, and noise generated during operation of the machine is reduced.

4. The convex block can be pressed downwards by pressing the outer cover downwards, so that the bottom end of the pressing block is pressed downwards and triggers the switch body, the driver is started, and grinding is carried out. After the outer cover is loosened, the pressing block and the protruding block reset under the action of the elastic piece, the power supply circuit is disconnected again by the hanging body, the driver stops working, and grinding is stopped. The portable grinding machine can be started by pressing the outer cover downwards, and the portable grinding machine can be stopped by loosening the outer cover, so that the portable grinding machine is very convenient. In addition, when starting, need push down the enclosing cover, this just makes enclosing cover and base cooperation inseparabler to further improve the effect of making an uproar that gives sound insulation, simultaneously safer, avoid grinding thing spill effectively

5. The operation indicator lamp can be used to assist in checking whether the driver or power supply circuit is malfunctioning. If the knob has been depressed sufficiently, but the operating light is not on, and the sharpening blade is not rotating, there is a high probability that the power supply circuit or driver will fail. If the operating light is on but the sharpening blade is not rotating, this indicates that the circuit has been successfully completed, possibly with a driver failure or a portion of the drive failed. The electric quantity display area can be used for monitoring the residual electric quantity of the storage battery and supplementing the electric quantity during charging, so that the phenomenon that normal use cannot be performed due to forgetting of charging is prevented.

6. Adopt Type C interface to charge, the commonality is strong, can be compatible with cell-phone charger, need not additionally to carry the charging wire, and is more convenient.

[ description of the drawings ]

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive effort.

Fig. 1 is an exploded view of a portable grinder provided in example 1 of the present invention;

fig. 2 is a schematic view of the overall structure of a portable grinder provided in embodiment 1 of the present invention;

FIG. 3 is a partial perspective view of the portable grinder of FIG. 2;

FIG. 4 is an enlarged view of area A of FIG. 1;

fig. 5 is a schematic view showing an internal structure of the portable grinder of fig. 2;

FIG. 6 is a schematic view of the drive motor and abrasive blade in cooperation;

FIG. 7 is a schematic diagram of the power take-off of the drive;

FIG. 8 is a schematic view of the driver and grinding cup combination;

FIG. 9 is a schematic view of the portable grinder of FIG. 2 from another perspective;

fig. 10 is a schematic view of the structure of the abrasive blade.

Description of reference numerals: a portable grinder 1; a host 11; a base 111; an opening 111 a; a connecting groove 111 b; an annular flange 111 c; a work indicator lamp 111 d; a power display area 111 e; a charging interface 111 f; a driver 112; an output shaft 112 a; an adapter disk 112 b; a card slot 112 c; a push switch 113; a switch body 113 a; an elastic member 113 b; a briquette 113 c; the bump 113 d; a stopper 114; grinding the cup 12; a cup body 121; a cup holder 122; the coupling projection 122 a; a grinding blade 123; a blade body 123 a; a connecting shaft 123 b; an adapter 123 c; a latch 123 d; an upper cover 13; air holes 131; and an outer lid 14.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium; but also the communication inside the two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, 2 and 3, the present embodiment provides a portable grinder 1. The portable grinder 1 includes: a main body 11, a grinding cup 12, an upper cover 13 and an outer cover 14. Grinding cup 12 is detachably matched with main machine 11, upper cover 13 covers grinding cup 12, and outer cover 14 covers grinding cup 12 and upper cover 13 at the same time and is detachably matched with main machine 11.

Referring to fig. 2, 4, 5, 6, 8 and 9, the host 11 includes: a base 111, a driver 112, a storage battery (not shown), a push switch 113, a work indicator 111d, a power display area 111e, and a charging interface 111 f. The driver 112, the storage battery, and the push switch 113 are all provided inside the base 111.

The base 111 is cylindrical, the top of the base 111 is circular and open, the edge of the opening 111a protrudes to form an annular flange 111c, the inner wall of the opening 111a at the top of the base 111 is provided with a connecting groove 111b, and the connecting groove 111b is L-shaped.

Referring to fig. 5 and 6, the driver 112 is a motor, the driver 112 has a power output portion, the power output portion includes an output shaft 112a of the motor and an adapter 112b connected to an outer portion of the output shaft 112a, the adapter 112b is rotatably connected to the base 111, the power output shaft 112a and the base 111 are coaxially disposed, and the power output shaft 112a extends toward a top portion of the base 111 and extends out from an opening 111a at the top portion of the base 111.

Referring to fig. 7, the adapter 112b is disc-shaped, the adapter 112b is coaxially disposed with the output shaft 112a and fixedly connected thereto, the adapter 112b is accommodated in the opening 111a at the top of the base 111, and at least one slot 112c is disposed on a side of the adapter 112b away from the driver 112. In the present invention, the adapter plate 112b is configured to be a disk shape, and a plurality of slots 112c are circumferentially disposed on the adapter plate, and the slots 112c are equally spaced.

Referring to fig. 4 and 8, the push switch 113 includes: a switch body 113a, an elastic member 113b, and a pressing piece 113 c. The switch body 113a is installed inside the base 111, and is fixedly connected with the base 111, and the push switch 113 is electrically connected with the power supply circuit of the driver 112, so as to realize: when the trigger push switch 113 is pressed, the driver 112 starts; when the push switch 113 is released, the driver 112 stops operating.

The pressing piece 113c is also installed inside the base 111, and the pressing piece 113c is slidably engaged with the base 111 along the height direction of the base 111. The pressing block 113c has a protrusion 113d at the top, and the base 111 has a through hole at the top for the protrusion 113d to extend out, i.e. the protrusion 113d is exposed at the top of the base 111. The through hole is located outside the opening 111 a. The elastic member 113b is a spring, the elastic member 113b is engaged with the pressing block 113c, and in a natural state, the pressing block 113c is pushed toward the top end of the base 111 by the elastic member 113b, so that the protrusion 113d protrudes from the through hole at the top of the base 111. The bottom end of the pressing block 113c abuts against the switch body 113a, and the pressing block 113c is pressed downward, so that the pressing block 113c can trigger the switch body 113a, thereby controlling the start and stop of the driver 112.

In this embodiment, the pressing blocks 113c and the elastic members 113b are three groups, the three groups of pressing blocks 113c and the elastic members 113b are uniformly arranged along the circumference of the base 111 at intervals, and the switch body 113a is matched at the bottom end of one group of pressing blocks 113c for controlling the start and stop of the driver 112. The switch body 113a is provided with circuit components, which are circuit structures of conventional switches, and therefore, the description thereof is omitted.

The top of the base 111 is further provided with a stop block 114, the stop block 114 is located on one side of the protruding block 113d far away from the annular flange 111c, a space for the outer cover to be inserted is formed between the stop block 114 and the annular flange 111c, and a good limiting and guiding effect is achieved when the outer cover 14 presses down the press switch 113, so that the portable grinder 1 can be opened smoothly. Meanwhile, the protection device is used for protecting the bump 113d and preventing the bump 113d from being damaged in the moving and carrying processes.

In one variation of this embodiment, the elastic member 113b is an elastic rubber pad. Of course, other materials capable of providing resilience may be used for the elastic member 113 b.

The number of the pressing blocks 113c and the elastic members 113b may be flexibly selected according to the design requirements of the product, and is not limited thereto.

Returning to the present embodiment, the storage battery is also installed inside the base 111, and the storage battery is electrically connected to the power supply circuit of the driver 112 for providing power to the driver 112. The storage batteries are rechargeable batteries, in the embodiment, the number of the mobile potentials is 3, the capacity of each storage battery is 2000mAh, and the total power of the three storage batteries is 200W.

The portable grinding machine 1 is more convenient to carry by traveling due to the fact that the storage battery is used for supplying power, is particularly suitable for outgoing activities such as camping, field gathering, mountain climbing and the like, gets rid of the limitation of power supply of a plug and a socket, and is more convenient to use.

It should be noted that the specification of the storage battery can be flexibly selected according to the design requirement of the product, and is not limited thereto.

Referring to fig. 2, in this embodiment, the working indicator 111d and the electric quantity display area 111e are both disposed on the sidewall of the base 111, the working indicator 111d is used for indicating the working status of the portable grinder 1, and the electric quantity display area 111e is used for displaying the remaining electric quantity percentage. When the driver 112 operates, the operation indicator lamp 111d lights up; when the driver 112 is stopped, the operation indicator lamp 111d is turned off. The power display area 111e directly displays the remaining power by using the percentage value.

The operation indicator lamp 111d can be used to assist in checking whether the driver 112 or the power supply circuit is malfunctioning. If the tab 113d has been depressed sufficiently, but the operation indicator 111d is not illuminated, and the sharpening blade 123 is not rotated, there is a high probability that the power supply circuit or driver 112 will fail. If the operation indicator 111d is illuminated but the sharpening blade 123 is not rotating, this indicates that the circuit has been successfully completed, possibly with the driver 112 malfunctioning or with a portion of the drive malfunctioning.

The power display area 111e can be used to monitor the remaining power of the battery and the charging power to prevent the battery from being used improperly due to forgetting to charge the battery.

Referring to fig. 8 in conjunction with fig. 9, the base 111 further has a charging interface 111f for charging the battery, and the Type of the charging interface 111f is Type C. Adopt Type C interface to charge, the commonality is strong, can be compatible with cell-phone charger, need not additionally to carry the charging wire, and is more convenient.

In a variation of the present embodiment, the power amount display area 111e displays the remaining power amount in the form of a power amount progress bar.

It should be noted that the type of the charging interface 111f can be flexibly selected according to the design requirements of the product, and is not limited thereto.

Referring to fig. 1, 2, 3, 4, 5, 6 and 10, grinding cup 12 includes: a cup body 121, a cup holder 122 and a grinding blade 123. Wherein the cup body 121 is made of a metal material, and the cup holder 122 is made of plastic. The cup body 121 is cylindrical, the cup holder 122 is disc-shaped, and the cup body 121 and the cup holder 122 are coaxially disposed.

The cup holder 122 is detachably connected to the bottom of the cup body 121. The outer surface of the cup holder 122 is provided with a coupling protrusion 122a for detachably engaging with the coupling groove 111b of the opening 111a, so that the grinding cup 12 engages with the top of the base 111. The concrete matching mode is as follows: first, the connection protrusion 122a of the cup holder 122 of the grinding cup 12 is snapped into the upper end of the connection groove 111b, and the grinding cup 12 is pressed down along the connection groove 111b along the height direction of the base 111, and after the connection protrusion 122a contacts the bottom of the connection groove 111b, the grinding cup 12 is rotated relative to the base 111, so that the connection protrusion 122a is snapped into the connection groove 111 b. After the rotation is finished, the grinding cup 12 is successfully installed on the top of the base 111 and cannot fall off. If it is desired to remove grinding cup 12, the reverse sequence may be followed.

Through this design, can cooperate, separate very conveniently between grinding cup 12 and the base 111 to make portable grinding machine 1 more be convenient for assemble and dismantle, also more do benefit to and fully wash grinding cup 12, to keeping the cleanliness factor, reduce and wash the degree of difficulty and have positive meaning.

The grinding blade 123 is provided inside the grinding cup 12, and the grinding blade 123 includes: a blade body 123a and a connecting shaft 123 b. The axis of rotation of the blade body 123a coincides with the central axis of the connecting shaft 123b, and the connecting shaft 123b passes through the cup holder 122 of the grinding cup 12 and protrudes from the bottom of the cup holder 122. The connecting shaft 123b is fixedly connected with an adapter 123c, the adapter 123c is also disc-shaped, the adapter 123c and the connecting shaft 123b are coaxially arranged, and the adapter 123c is arranged at the bottom of the cup 122 and can rotate relative to the cup 122. A latch 123d is disposed on a side of the adapter 123c away from the grinding cup 12, the latch 123d is formed by a surface of the adapter 123c protruding, and the latch 123d is detachably engaged with the latch slot 112c of the adapter 112 b. When the grinding cup 12 is mounted on top of the base 111, the latch 123d is engaged in the latch slot 112c and the driver 112 is able to drive the grinding blade 123. When the grinding cup 12 is detached from the top of the base 111, the latch 123d and the catch groove 112c are separated.

The grinding cup 12 and the base 111 are in transmission fit through the adapter plate 112b and the adapter 123c, so that the grinding cup is convenient to assemble and disassemble, the clamping block 123d and the clamping groove 112c can smoothly transmit torque, the grinding blade 123 is ensured to be smoothly driven, and the adapter plate 112b and the adapter 123c are prevented from slipping.

The materials of the cup body 121 and the cup holder 122 can be flexibly selected according to the design requirements of the product, but are not limited thereto.

In a variation of this embodiment, the adapter plate 112b and the adapter 123c are drivingly engaged by a magnetic coupling. Of course, other separable couplings may be used.

Referring to fig. 1 and 3, in this embodiment, the upper cover 13 is provided with an air hole 131 for balancing the pressure inside and outside the grinding cup 12. The upper lid 13 is fitted over the grinding cup 12, and the outer lid 14 is used to simultaneously fit over the grinding cup 12 and the upper lid 13. By the design, noise can be effectively reduced, and noise generated during operation of the machine is reduced.

The outer cover 14 covers the top of the base 111 and covers the outside of the opening 111a, when the cover is closed, the inside of the outer cover 14 is attached to the outside of the annular flange 111c, and the outside of the outer cover 14 is attached to the side of the stopper 114 close to the protrusion 113 d. The outer lid 14 covers the entire opening 111a, thereby covering the grinding cup 12 and the upper lid 13. The lower end of the outer cover 14 just abuts against the bump 113d of the pressing block 113c, and the bump 113d can be pressed downward by pressing the outer cover 14 downward, so that the bottom end of the pressing block 113c is pressed downward to trigger the switch body 113a, and the driver 112 is started to grind. After the outer cover 14 is loosened, the pressing block 113c and the projection 113d are reset under the action of the elastic member 113b, the power supply circuit is disconnected again by the hanging body, the driver 112 stops working, and the grinding is stopped.

According to the above design, the portable grinder 1 can be started by pressing the outer cover 14 down, and the portable grinder 1 can be stopped by releasing the outer cover 14, which is very convenient. In addition, at the time of starting, the outer cover 14 needs to be pressed down, which makes the outer cover 14 and the base 111 fit more closely, so as to further improve the sound insulation and noise reduction effects, and simultaneously, the grinding objects are safer and effectively prevented from splashing.

The outer cover 14 is abutted against the convex blocks 113d of the 3 pressing blocks 113c, so that on one hand, the stress is more uniform, and on the other hand, after the outer cover 14 is released, the three convex blocks 113d can lift the outer cover 14 together, so that the outer cover 14 is more convenient to take down.

In this embodiment, the upper cover 13 and the outer cover 14 are made of transparent materials, which facilitates the observation of the ground material in the grinding cup 12 while grinding is being performed, and facilitates the control of the grinding time.

The annular flange 111c and the stopper 114 can stabilize the outer lid 14, improve stability and reliability when the outer lid 14 is pressed down, prevent the outer lid 14 from laterally moving during the pressing down, and improve safety.

In summary, compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

1. the grinding cup 12 and the base 111 can be very conveniently matched and separated, so that the portable grinding machine 1 is more convenient to assemble and disassemble, the grinding cup 12 can be fully cleaned, and the portable grinding machine has positive significance for keeping cleanliness and reducing cleaning difficulty. In addition, adopt the battery to supply power, make portable grinding machine 1 more be convenient for carried by the trip, be particularly suitable for being used for outing activities such as camping, field party, climbing mountain, has broken away from the restriction of plug and socket power supply, and it is more convenient to use. Is very suitable for being used as a portable coffee grinder.

2. The grinding cup 12 and the base 111 are in transmission fit through the adapter plate 112b and the adapter 123c, so that the grinding cup is convenient to assemble and disassemble, the clamping block 123d and the clamping groove 112c can smoothly transmit torque, the grinding blade 123 is ensured to be smoothly driven, and the adapter plate 112b and the adapter 123c are prevented from slipping.

3. The upper cover 13 covers the grinding cup 12, and the outer cover 14 covers the grinding cup 12 and the upper cover 13 at the same time, so that noise can be effectively reduced, and noise in operation of the machine can be reduced.

4. By pressing the outer lid 14 down, the protrusion 113d is pressed down, so that the bottom end of the pressing piece 113c is pressed down to trigger the switch body 113a, and the driver 112 is started to perform grinding. After the outer cover 14 is loosened, the pressing block 113c and the projection 113d are reset under the action of the elastic member 113b, the power supply circuit is disconnected again by the hanging body, the driver 112 stops working, and the grinding is stopped. The portable grinder 1 is started by pressing the cover 14 down, and the portable grinder 1 is stopped by releasing the cover 14, which is very convenient. In addition, when starting, need push down enclosing cover 14, this just makes enclosing cover 14 and base 111 cooperate closely more to further improve the effect of making an uproar falls in giving sound insulation, simultaneously safer, avoid the mill thing spill effectively

5. The operation indicator lamp 111d can be used to assist in checking whether the driver 112 or the power supply circuit is malfunctioning. If the tab 113d has been depressed sufficiently, but the operation indicator 111d is not illuminated, and the sharpening blade 123 is not rotated, there is a high probability that the power supply circuit or driver 112 will fail. If the operation indicator 111d is illuminated but the sharpening blade 123 is not rotating, this indicates that the circuit has been successfully completed, possibly with the driver 112 malfunctioning or with a portion of the drive malfunctioning. The power display area 111e can be used to monitor the remaining power of the battery and the charging power to prevent the battery from being used improperly due to forgetting to charge the battery.

6. Adopt Type C interface to charge, the commonality is strong, can be compatible with cell-phone charger, need not additionally to carry the charging wire, and is more convenient.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A portable grinder, comprising: the grinding cup comprises a main machine, a grinding cup and a grinding blade connected to the inside of the grinding cup, wherein the main machine comprises a base, a driver and at least one storage battery; the grinding cup is detachably matched with the base, and the driver is electrically connected with the storage battery.

2. The portable grinder of claim 1, wherein the driver includes a power take-off, the grinding blade includes a blade body and a connecting shaft, the connecting shaft extends from the bottom of the grinding cup and is rotatably connected to the power take-off, and the connecting shaft is detachably connected to the power take-off.

3. The portable grinder of claim 2, wherein the driver is a motor, the power output portion includes an output shaft of the motor and an adapter plate connected to the outside of the output shaft, the connecting shaft is fixedly connected with an adapter, one of the adapter plate or the adapter plate is provided with at least one clamping groove, and the other is provided with a clamping block matched with the clamping groove.

4. The portable grinder of claim 3, wherein the driver and the storage battery are provided in the base, the top of the base is open, one of an inner wall at the opening of the top of the base or an outer surface of the bottom of the grinding cup is provided with a coupling groove, and the other is provided with a coupling projection, the coupling groove being "L" shaped.

5. The portable grinder of claim 4, wherein the grinding cup includes a cup body made of a metal material and a cup holder made of plastic; the cup base with the detachable connection of cup main part bottom, the spread groove perhaps connect protruding the setting and be in the cup base surface, the adapter sets up cup base bottom and with the cup base rotates to be connected.

6. The portable grinder of claim 1, wherein the number of the storage batteries is set to 3, and each of the storage batteries has a capacity of 2000 mAh.

7. The portable grinder of claim 1, including an upper lid that fits over the grinding cup and an outer lid that fits over the grinding cup and the upper lid.

8. A portable grinder as claimed in claim 7, characterised in that the main machine is further provided with a push switch for controlling the start and stop of the drive; the push switch comprises a switch body, an elastic piece and a pressing block; along the height direction of the main machine, the pressing block is in sliding fit with the main machine; the elastic piece is matched with the pressing block, and the pressing block is ejected out of the top end of the main machine by the elastic piece in a natural state; when the outer cover is pressed down, the pressing block is pressed down, and the pressing block triggers the switch body to enable the driver to be started.

9. A portable grinder as claimed in any one of claims 1 to 8, characterised in that the main unit is further provided with a working indicator light and/or a charge display area, the working indicator light being lit when the drive is in operation; after the driver stops, the working indicator lamp is turned off; the electric quantity display area is used for displaying the percentage of the residual electric quantity.

10. A portable grinder as claimed in any one of claims 1 to 8, characterised in that the main machine further has a charging interface for charging the accumulator; further, the Type of the charging interface is Type C.

Images