CN216228632U - Angle grinder - Google Patents

Abstract

The utility model provides an angle grinder, comprising: the angle grinder head is internally provided with a containing cavity; the shell handle is connected with the angle grinder head; the outer rotor motor is arranged in the accommodating cavity; one end of the output shaft is connected with the outer rotor motor, and the other opposite end of the output shaft extends out of the accommodating cavity; the grinding disc is connected with the output shaft through a shaft; the outer rotor motor rotates to drive the output shaft to rotate, and the output shaft drives the grinding discs to rotate. According to the embodiment of the utility model, the outer rotor motor is directly mounted on the machine head, so that a gearbox is saved, and the handle of the machine shell can be designed more carefully and more accord with aesthetic and ergonomic principles.

Description

Angle grinder

Technical Field

The utility model relates to the technical field of electric tools, in particular to an angle grinder.

Background

An angle grinder, also called a grinder or a disc grinder, is a grinding tool used for cutting and grinding glass fiber reinforced plastics. The angle grinder is a portable electric tool for cutting and grinding glass fiber reinforced plastics, and is mainly used for cutting, grinding and brushing metal and stone materials.

In the traditional angle grinder, the output rotating speed of the machine is achieved by the speed reduction of a gearbox, so that the motor needs to be installed on a shell handle, and the shape design of the shell handle is limited.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides the angle grinder, the outer rotor motor is directly mounted on the machine head, so that a gearbox is saved, and the handle of the machine shell can be designed more carefully and more accord with aesthetic and ergonomic principles.

To solve the above problems, the present invention provides an angle grinder including: the angle grinder head is internally provided with a containing cavity; the shell handle is connected with the angle grinder head; the outer rotor motor is arranged in the accommodating cavity; one end of the output shaft is connected with the outer rotor motor, and the other opposite end of the output shaft extends out of the accommodating cavity; the grinding disc is connected with the output shaft through a shaft; the outer rotor motor rotates to drive the output shaft to rotate, and the output shaft drives the grinding discs to rotate.

Compared with the prior art, the technical scheme has the following technical effects: the outer rotor motor is directly installed in the accommodating cavity of the angle grinder head, the output shaft of the outer rotor motor is directly connected with the grinding disc, and the grinding disc is directly driven by the outer rotor motor, so that on one hand, a gearbox is saved, and the product yield is reduced; on the other hand, the outer rotor motor is directly placed at the position of the original gearbox, and the handle of the shell can be designed more carefully and more accords with aesthetic and ergonomic principles; in another aspect, the external rotor motor has a relatively large torque and a relatively small volume, which allows the shape of the angle grinder head of the angle grinder to be designed to be relatively small.

In one example of the present invention, the method further comprises: the end cover is provided with a motor mounting groove and connected with the angle grinder head.

Compared with the prior art, the technical scheme has the following technical effects: the end cover is provided with a motor mounting groove and is connected with the angle grinder head, and the outer rotor motor is fixed in the angle grinder head through the end cover.

In one example of the present invention, the end cap includes: the connecting sleeve is arranged in the motor mounting groove and is sleeved with the outer rotor motor.

Compared with the prior art, the technical scheme has the following technical effects: the connecting sleeve is arranged in the motor mounting groove, and the outer rotor motor is sleeved through the connecting sleeve, so that the outer rotor motor can be better fixed on the angle grinder head

In one example of the present invention, the method further includes: the fixing part extends out of the outer rotor motor, and a plurality of screw mounting positions are arranged on the fixing part.

Compared with the prior art, the technical scheme has the following technical effects: the end cover is fixed on the angle grinder head by arranging the fixing part extending out of the outer rotor motor and arranging a plurality of screw mounting positions on the fixing part to be matched with the angle grinder head through screws.

In one example of the present invention, the method further comprises: and the protection assembly is detachably arranged on one side, close to the grinding sheet, of the angle grinder head.

Compared with the prior art, the technical scheme has the following technical effects: the protection component is detachably arranged on one side, close to the grinding sheet, of the angle grinder head, and can be arranged on the angle grinder head when the protection component is required to be used; the protective assembly can be removed from the angle grinder head when not needed for use.

In one example of the present invention, the protection assembly includes: the fixed hoop is arranged on the angle grinder head; the buckle is arranged on the fixed hoop; a shield connected to the securing strap.

Compared with the prior art, the technical scheme has the following technical effects: the protective cover is arranged on the angle grinder head by arranging the buckle on the fixed hoop and fixedly connecting the protective cover with the fixed hoop, the fixed hoop is arranged on the angle grinder head firstly, and then the fixed hoop is fixed by the buckle to be fixed on the angle grinder head, so that the protective cover is arranged on the angle grinder head; in contrast, when the protection component is disassembled, the fixing hoop can be disassembled from the angle grinder head by loosening the fixing hoop through the buckle.

In one example of the present invention, the method further comprises: a locking assembly disposed on a side of the angle grinder head distal from the abrasive sheet, and the locking assembly is retractable with respect to the angle grinder head.

Compared with the prior art, the technical scheme has the following technical effects: through setting up the locking subassembly, set up the locking subassembly at the angle mill aircraft nose, when not using the angle mill, perhaps when needing to change the abrasive disc, can fix the external rotor motor through the locking subassembly earlier, prevent that the motor from rotating to lead to the abrasive disc to rotate and accidentally injure operating personnel.

In one example of the utility model, at least one locking hole is arranged on one side of the outer rotor motor close to the locking assembly; when the locking assembly is matched with the locking hole, the outer rotor motor is stopped to rotate.

Compared with the prior art, the technical scheme has the following technical effects: at least one locking hole is formed in the outer rotor motor, and the outer rotor motor is enabled to rotate and stop rotating through the matching of the locking assembly and the locking hole.

In one example of the present invention, the method further comprises: and the power supply assembly is detachably arranged on one side of the shell handle, which is far away from the angle grinder head.

Compared with the prior art, the technical scheme has the following technical effects: through setting up power supply unit detachably and locating the casing handle and keep away from one side of angle mill aircraft nose, change a battery and just can continue work when the angle mill does not have the electricity, need not charge.

In one example of the present invention, the method further comprises: the first heat dissipation hole is formed in one side, close to the shell handle, of the angle grinder head; and the second heat dissipation hole is formed in one side, far away from the angle grinder head, of the machine shell handle.

Compared with the prior art, the technical scheme has the following technical effects: set up first louvre on the one side that is close to the casing handle at the angle mill aircraft nose through the setting, set up the second louvre on the one side that the angle mill aircraft nose was kept away from to the casing handle, the convection current through first louvre and second louvre makes the angle mill dispel the heat and prevent it from high at the during operation temperature, leads to its damage.

After the technical scheme of the utility model is adopted, the following technical effects can be achieved:

(1) the gearbox is saved, and the product cost is reduced; on the other hand, the outer rotor motor is directly placed at the position of the original gearbox, and the handle of the shell can be designed more carefully and more accords with aesthetic and ergonomic principles;

(2) the outer rotor motor has larger torque and smaller volume, so that the shape of the angle grinder head of the angle grinder can be designed to be smaller.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an angle grinder 100 according to an embodiment of the present invention.

Fig. 2 is a schematic connection diagram of the angle grinder head 10, the outer rotor motor 60 and the protective assembly 50 shown in fig. 1.

Fig. 3 is an exploded view of the locking assembly 12 and the outer rotor motor 60 shown in fig. 1.

Fig. 4 is a schematic connection diagram of the external rotor motor 60 and the protection assembly 50 shown in fig. 1.

Fig. 5 is a sectional view of a-a shown in fig. 4.

Fig. 6 is a schematic structural diagram of the protection component 50 shown in fig. 1.

Fig. 7 is a schematic structural diagram of the power supply assembly 30 shown in fig. 1.

Fig. 8 is a schematic view of the structure of the housing handle 20 shown in fig. 1.

Fig. 9 is a schematic diagram of connection between the outer rotor motor 60 and the end cover 70.

Fig. 10 is a schematic view of the end cap 70 shown in fig. 9.

Description of reference numerals:

100 is an angle grinder; 10 is an angle grinder head; 11 is a containing cavity; 12 is a locking assembly; 13 is an output shaft; 14 is a first heat dissipation hole; 20 is a shell handle; 21 is a second heat dissipation hole; 22 is a groove; 30 is a power supply component; 31 is a convex part; 40 is a grinding sheet; 50 is a protection component; 51 is a fixed hoop; 52 is a buckle; 53 is a shield; 531 is a first opening; 532 is a second opening; 533 a grinding sheet accommodating cavity; 60 is an outer rotor motor; 61 is a locking hole; 70 is an end cover; 71 is a motor mounting groove; 72 is a connecting sleeve; reference numeral 73 denotes a fixing portion.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

[ first embodiment ] A method for manufacturing a semiconductor device

Referring to fig. 1, a schematic structural diagram of an angle grinder 100 according to an embodiment of the present invention is shown. The angle grinder 100 includes, for example: angle grinder head 10, housing handle 20, and power supply assembly 30. Wherein, the casing handle 20 is arranged between the angle grinder head 10 and the power supply assembly 30, and the power supply assembly 30 supplies power to the angle grinder head 10.

Further, the power supply assembly 30 is detachably disposed on the housing handle 20. For example, by providing the power supply assembly 30 detachably on the side of the housing handle 20 away from the angle grinder head 10, the power supply assembly 30 can be replaced when the angle grinder 100 is not powered, and the operation can be continued without charging.

Specifically, the angle grinder 100 further includes, for example: the first heat dissipation hole 14 and the second heat dissipation hole 21, wherein the first heat dissipation hole 14 is arranged on one side of the angle grinder head 10 close to the casing handle 20; the second heat dissipation hole 21 is disposed on a side of the casing handle 20 away from the angle grinder head 10. For example, by providing the first heat dissipation hole 14 on the side of the angle grinder head 10 close to the casing handle 20 and providing the second heat dissipation hole 21 on the side of the casing handle 20 far from the angle grinder head 10, convection can be formed through the first heat dissipation hole 14 and the second heat dissipation hole 21 to dissipate heat inside the angle grinder, thereby preventing the temperature of the angle grinder from being too high during operation and causing damage to the angle grinder.

Preferably, the second heat dissipation hole 21 is disposed only on one side of the housing handle 20, and at least one second heat dissipation hole 21 may be disposed on the opposite side.

Specifically, referring to fig. 2 to 5, the angle grinder 100 further includes, for example: outer rotor motor 60, output shaft 13 and grinding plate 40. Wherein, the angle grinder head 10 is provided with a containing cavity 11, and the outer rotor motor 60 is arranged in the containing cavity 11; one end of the output shaft 13 is connected with an external rotor motor 60; the opposite end extends out of the receiving cavity 11 and is connected to the grinding plate 40.

For example, by directly installing the external rotor motor 60 into the accommodating cavity 11 of the angle grinder head 10 and directly connecting the output shaft 13 of the external rotor motor 60 with the grinding plate 40, the grinding plate 40 is directly driven by the external rotor motor 60, on one hand, a gearbox is saved, and the product cost is reduced; on the other hand, the outer rotor motor 60 is directly placed at the position of the original gearbox, and the shell handle 20 can be designed more carefully and more accord with aesthetic and ergonomic principles; in yet another aspect, the external rotor motor 60 has a relatively large torque and a relatively small volume, which allows the shape of the angle grinder head of the angle grinder to be designed to be relatively small.

Specifically, the angle grinder 100 further includes, for example: a protective assembly 50. Wherein the protection component 50 is detachably arranged on one side of the angle grinder head 10 close to the grinding sheet 40. For example, the protection assembly 50 may be removably mounted to the side of the angle grinder head 10 adjacent to the grinding plate 40, and may be mounted to the angle grinder head 10 when it is desired to use the protection assembly 50; the protective assembly 50 can be removed from the angle grinder head 10 when not needed for use.

Preferably, the angle grinder 100 further includes, for example: the locking assembly 12. Wherein the locking assembly 12 is disposed on a side of the angle grinder head 10 away from the grinding plate 40, and the locking assembly 12 is retractable in the angle grinder head 10; at least one locking hole 61 is arranged on one side of the outer rotor motor 60 close to the locking assembly 12; wherein, when the locking assembly 12 is matched with the locking hole 61, the external rotor motor 60 stops rotating.

For example, at least one locking hole 61 is provided on the outer rotor motor 60, and by the cooperation of the locking assembly 12 and the locking hole 61, when the angle grinder 100 is not used or the grinding discs 40 need to be replaced, the outer rotor motor 60 can be fixed by the locking assembly 12, so as to prevent the rotation of the outer rotor motor 6 from causing the rotation of the grinding discs 40 to injure operators by mistake.

Specifically, with reference to fig. 9 and 10, the angle grinder 100 further includes, for example: an end cap 70. Wherein, the end cover 70 is provided with a motor mounting groove 71, and the outer rotor motor 60 is mounted in the motor mounting groove 71.

Further, the end cap 70, for example, further includes: a connecting sleeve 72 and a fixing part 73. Wherein, the connecting sleeve 72 is arranged in the motor mounting groove 71; the fixing portion 73 protrudes from the outer rotor motor 60.

Specifically, the connecting sleeve 72 and the output shaft 13 of the outer rotor motor 60 are coaxially arranged. For example, when the outer rotor motor 60 works, the outer rotor motor 60 is fixed by the connecting sleeve 72, and the output shaft 13 and the connecting sleeve 72 are coaxially arranged, so that the outer rotor motor 60 can slide in the angle grinder head 10, and the stability is improved.

Specifically, the fixing portion 73 is provided with a plurality of screw attachment positions. The screw mounting position is matched with the angle grinder head 10, and the end cover 70 is fixedly connected with the angle grinder head 10 through screws or bolts.

Preferably, the end cap 70 is made of aluminum.

Further, referring to fig. 6, the protection member 50 includes, for example: a securing collar 51, a catch 52 and a shroud 53. Wherein, the fixed hoop 51 is arranged on the angle grinder head 10, the buckle 52 is arranged on the fixed hoop 51, and the protective cover 53 is connected with the fixed hoop 51. For example, by arranging the buckle 52 on the fixed hoop 51 and fixedly connecting the protective cover 53 to the fixed hoop 51, the fixed hoop 51 is firstly arranged on the angle grinder head 10, and then the fixed hoop 51 is fixed by the buckle 52 to fix the fixed hoop 51 on the angle grinder head 10, so that the protective cover 53 is mounted on the angle grinder head 10; in contrast, when the protective assembly 50 is removed, the fixing band 51 can be removed from the angle grinder head 10 by releasing the fixing band 51 through the catch 52.

Preferably, the angle grinder head 10 is provided with a groove near the fixed hoop 51 and a projection on the opposite fixed hoop 51. For example, when the fixing hoop 51 is connected with the angle grinder head 10 by the snap 52, the fixing hoop 51 is only fixed by friction, the connection between the fixing hoop 51 and the angle grinder head 10 is gradually deteriorated under long-term use, but the angle grinder head 10 can be better fixed by the matching of the groove on the angle grinder head 10 and the bump on the fixing hoop 51.

Specifically, with reference to fig. 5 and 6, a grinding plate accommodating cavity 533 is provided in the shroud 53, and the diameter of the grinding plate accommodating cavity 533 is larger than that of the grinding plate 40; wherein, the grinding sheet accommodating cavity 533 is provided with a first opening 531 and a second opening 532, and the first opening 531 is arranged in a horizontal direction close to the grinding sheet 40, and the second opening 532 is arranged in a vertical direction close to the grinding sheet 40.

For example, the shroud 53 is provided with the grinding chip accommodating cavity 533 having a diameter larger than that of the grinding chip 40, and the first opening 531 and the second opening 532 are respectively provided in the horizontal direction and the vertical direction of the grinding chip accommodating cavity 533 close to the grinding chip 40, so that the grinding chip 40 is not affected when in use, and the upper end of the shroud can still prevent spatter from being splashed.

Preferably, the second opening 532 is inclined inwardly. For example, spatter sputtering can be better prevented by providing the second opening 532 with an inward inclination.

Specifically, referring to fig. 7 and 8, a telescopic protrusion 31 is provided on a side of the power supply assembly 30 close to the casing handle 20; on the opposite side, a groove 22 is arranged on one side of the casing handle 20 close to the power supply assembly 30; wherein, when the power supply assembly 30 is mounted on the casing handle 20, the protrusion 31 extends out and cooperates with the groove 22, so that the power supply assembly 30 is mounted on the casing handle 20; when the power supply module 30 needs to be detached from the housing handle 20, the protruding portion 31 is contracted, so that the power supply module 30 is detached from the housing handle 20.

Preferably, a button is arranged outside the power supply assembly 30; wherein, the button is connected with the boss 31, and the expansion and contraction of the boss 31 can be controlled by the button.

Further, a sliding groove is formed on one side of the casing handle 20 close to the power supply assembly 30. For example, by arranging the casing handle 20 and the power supply assembly 30 to be slidably connected, when the power supply assembly 30 is slidably fitted, the protrusion 31 is just fitted into the groove 22, that is, the power supply assembly 30 is mounted on the casing handle 20, and the battery output end of the power supply assembly 30 is connected to the output end of the casing handle 20, so that the power supply assembly 30 is conveniently mounted.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An angle grinder, comprising:

the angle grinder head is internally provided with a containing cavity;

the shell handle is connected with the angle grinder head;

the outer rotor motor is arranged in the accommodating cavity;

one end of the output shaft is connected with the outer rotor motor, and the other opposite end of the output shaft extends out of the accommodating cavity;

the grinding disc is connected with the output shaft through a shaft;

the outer rotor motor rotates to drive the output shaft to rotate, and the output shaft drives the grinding discs to rotate.

2. The angle grinder of claim 1, further comprising:

the end cover is provided with a motor mounting groove and is connected with the angle grinder head;

wherein the outer rotor motor is mounted in the motor mounting groove.

3. The angle grinder of claim 2, wherein the end cap comprises:

the connecting sleeve is arranged in the motor mounting groove and is sleeved with the outer rotor motor.

4. The angle grinder of claim 2, wherein the end cap further comprises:

the fixing part extends out of the outer rotor motor, and a plurality of screw mounting positions are arranged on the fixing part.

5. The angle grinder of claim 1, further comprising:

and the protection assembly is detachably arranged on one side, close to the grinding sheet, of the angle grinder head.

6. The angle grinder of claim 5, wherein the protective assembly includes:

the fixed hoop is arranged on the angle grinder head;

the buckle is arranged on the fixed hoop;

a shield connected to the securing strap.

7. The angle grinder of claim 1, further comprising:

a locking assembly disposed on a side of the angle grinder head distal from the abrasive sheet, and the locking assembly is retractable with respect to the angle grinder head.

8. The angle grinder of claim 7, wherein at least one locking hole is formed on one side of the outer rotor motor close to the locking assembly;

when the locking assembly is matched with the locking hole, the outer rotor motor is stopped to rotate.

9. The angle grinder of claim 1, further comprising:

and the power supply assembly is detachably arranged on one side of the shell handle, which is far away from the angle grinder head.

10. The angle grinder of claim 1, further comprising:

the first heat dissipation hole is formed in one side, close to the shell handle, of the angle grinder head;

and the second heat dissipation hole is formed in one side, far away from the angle grinder head, of the machine shell handle.

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