Coffee bean grinding machine capable of adjusting particle precision

Abstract

The utility model relates to the technical field of grinding equipment, in particular to a coffee bean grinding machine capable of adjusting particle precision, which comprises a machine body, a motor, a transmission shaft, an inner grinding head, an outer grinding head and an inner knob are arranged in the machine body, the lower end of the transmission shaft is fixedly connected with the inner grinding head, and the upper end of the transmission shaft is in driving connection with the output end of the motor. The outer grinding head is fixed in the machine body, the inner grinding head and the outer grinding head are arranged in a matched mode, a grinding gap is formed between the inner grinding head and the outer grinding head, and the inner rotary knob and the transmission shaft are arranged correspondingly. A rotatable outer knob is arranged on the machine body and is in threaded connection with the inner knob, and the inner knob is driven by rotating the outer knob to drive the transmission shaft and the inner grinding head to ascend and descend relative to the outer grinding head so as to adjust the size of the grinding gap. During adjustment, the outer knob located on the machine body is rotated to make threaded motion with the inner knob, then the inner knob is driven to drive the transmission shaft and the inner grinding head to ascend and descend relative to the outer grinding head, the grinding gap is adjusted, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to grinding equipment technical field especially a coffee bean grinder with adjustable particle precision. BACKGROUND

[0002] With the improvement of people's quality of life, it has become a fashion to taste coffee in leisure time, especially when camping in the wild. Freshly grinding and brewing coffee beans can preserve the original aroma of coffee to a greater extent, and the fineness of the ground coffee powder will also affect the taste and experience.

[0003] The existing coffee bean grinder is manual or electric. The utility model discloses a kind of adjustable particle precision grinder, which is disclosed in the utility model patent with announcement number CN221690721U, by being provided with adjusting knob below transmission shaft in grinder, to adjust the size of grinding gap according to requirement;This method needs to open lower end cover to operate, and the operation is more cumbersome, not enough convenient to use, and when adjusting by opening lower end cover, dust and other sundries will enter, at the same time, adjusting knob is located below transmission shaft, and it needs to contact with adjusting knob when adjusting, and adjusting knob will contact with ground coffee powder, thereby causing ground coffee powder to be contaminated, and affecting coffee quality.

[0004] Therefore, there is still room for improvement in the prior art. UTILITY MODEL CONTENT

[0005] In order to solve the problems of the prior art, the utility model provides a coffee bean grinder with adjustable particle precision, which is easy to operate and does not affect the quality of coffee.

[0006] In order to achieve the above purpose, the technical scheme applied by the utility model is as follows:

[0007] A coffee bean grinder with adjustable particle precision, comprising a body, the body is provided with a motor, a transmission shaft, an inner grinding head, an outer grinding head and an inner knob, the lower end of the transmission shaft is fixedly connected with the inner grinding head, the upper end of the transmission shaft is drivingly connected with the output end of the motor, the outer grinding head is fixed in the body, the inner grinding head and the outer grinding head are cooperatively arranged, and a grinding gap is formed between the inner grinding head and the outer grinding head, the inner knob is correspondingly arranged with the transmission shaft; The body is provided with a rotatable outer knob, the outer knob is threadedly connected with the inner knob, the inner knob drives the transmission shaft and the inner grinding head to lift relative to the outer grinding head by rotating the outer knob, so as to adjust the size of the grinding gap.

[0008] According to the scheme, the fuselage comprises an upper shell, a middle shell and a lower shell, the upper end of the middle shell is detachably connected with the upper shell, the lower end of the middle shell is detachably connected with the lower shell, the motor is fixed in the upper shell, a sleeve is arranged in the middle shell, the upper end of the transmission shaft is drivingly connected with the output end of the motor, the lower end of the transmission shaft is fixedly connected with the inner grinding head after penetrating through the sleeve, the inner knob is located in the middle shell and can be lifted, and a powder storage cavity is formed in the lower shell.

[0009] According to the scheme, the inner knob is fixed with a connecting rod, a through hole is arranged at the center of the connecting rod, the lower end of the transmission shaft is fixedly connected with the inner grinding head after penetrating through the sleeve and the through hole, an upper bearing corresponding to the transmission shaft is arranged in the upper end of the sleeve, and a lower bearing corresponding to the transmission shaft is arranged in the lower end of the sleeve; the upper and lower surfaces of the connecting rod are limited by a clamping ring clamped on the transmission shaft and a limiting ring arranged on the transmission shaft, respectively, and a spring is arranged on the transmission shaft between the clamping ring and the sleeve.

[0010] According to the scheme, the middle shell is fixed with a fixed seat and an outer limiting seat, the lower end of the fixed seat is threadedly connected with the lower shell, the upper end of the fixed seat is fixed with an inner limiting seat and an outer grinding head, the outer grinding head is located in the inner limiting seat, the inner knob is driven to slide between the outer limiting seat and the inner limiting seat by rotating the outer knob, and a guide assembly is arranged between the inner knob and the outer limiting seat.

[0011] According to the scheme, the guide assembly comprises a guide block arranged on the inner knob and a guide groove arranged on the outer limiting seat, the guide block is slidingly connected with the guide groove, an outer thread is arranged on the outer wall of the guide block, an inner thread matched with the outer thread is arranged on the inner wall of the outer knob, and an anti-skid pattern is arranged on the outer wall of the outer knob.

[0012] According to the scheme, a plurality of positioning beads are fixed on the outer limiting seat, a plurality of stretchable ball beads are arranged on the plurality of positioning beads, a positioning groove is annularly arranged on the inner wall of the outer knob, and the positioning groove and the ball beads correspondingly clamp.

[0013] According to the scheme, the fixed seat is provided with a mounting step one matched with the bottom of the inner limiting seat and a mounting step two matched with the bottom of the inner knob; an oblate position one is arranged on the outer wall of the outer grinding head, and an oblate position two matched with the oblate position one is arranged on the inner wall of the inner limiting seat.

[0014] According to the scheme, the inner grinding head is a circular table structure, an outer grinding tooth is formed on the outer wall of the inner grinding head, the outer grinding head is a circular tube structure, an inner grinding tooth matched with the outer grinding tooth is arranged on the inner wall of the outer grinding head, and a grinding gap is located between the outer grinding tooth and the inner grinding tooth.

[0015] According to the scheme, a screwing buckle one is formed on the upper shell, a screwing buckle two is formed on the middle shell, the screwing buckle one and the screwing buckle two are screwingly matched, a locking groove is formed on the screwing buckle one, a locking pin is formed on the screwing buckle two, and the locking pin and the locking groove are clamped when the screwing buckle one and the screwing buckle two are screwingly matched.

[0016] According to the scheme, the middle shell is provided with a feeding port, the feeding port is provided with a detachable cover, the output end of the motor is provided with a shaft coupling, the shaft coupling is drivingly connected with the upper end of the transmission shaft, the upper shell is further provided with a storage battery, and the upper shell is provided with a charging port and a heat dissipation hole.

[0017] The utility model discares the beneficial effects:

[0018] The utility model discloses the following arrangement, when adjusting, through rotating the outer knob on the fuselage, make it with the thread movement of inner knob, further drive inner knob drive transmission shaft and inner grinding head relative outer grinding head lift, with adjusting grinding gap size, its convenient operation, and will not affect coffee quality, and the overall structure is small and exquisite, convenient to carry and storage. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the whole structure sectional view of the utility model;

[0021] Figure 3 It is Figure 3 The enlarged view of middle A position;

[0022] Figure 4 It is the schematic view of the outer limit seat, outer knob, inner knob, outer grinding head, inner limit seat and fixed seat of the utility model;

[0023] Figure 5 It is the schematic view of the outer limit seat, outer knob, inner knob and positioning ball of the utility model;

[0024] Figure 6 It is the schematic view of the outer grinding head, inner limit seat and fixed seat of the utility model;

[0025] Figure 7 It is the schematic view of the upper shell and middle shell of the utility model.

[0026] In the drawing:

[0027] 1. Upper shell; 11. Charging port; 12. Motor; 13. Coupling; 14. Battery; 15. Threaded fastener one; 16. Locking groove; 2. Middle shell; 21. Sleeve; 22. Upper bearing; 23. Lower bearing; 24. Inner limit seat; 241. Flat part two; 25. Fixed seat; 251. Mounting step one; 252. Mounting step two; 26. Threaded fastener two; 27. Cover; 28. Locking pin; 29. ​​Outer limit seat; 291. Guide groove; 292. Positioning bead; 3. Lower shell; 31. Powder storage chamber; 4. Outer knob; 41. Anti-slip texture; 42. Positioning groove; 43. Internal thread; 5. Inner grinding head; 51. Outer grinding tooth; 6. Drive shaft; 62. Spring; 63. Limiting ring; 7. Outer grinding head; 71. Flat part one; 72. Inner grinding tooth; 8. Inner knob; 81. Connecting rod; 82. Snap ring; 83. Through hole; 84. Guide block; 85. External thread; 10. Grinding gap. Detailed Implementation

[0028] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1 to 7 As shown, the present invention discloses an adjustable particle size coffee bean grinder, comprising a machine body, wherein a motor 12, a drive shaft 6, an inner grinding head 5, an outer grinding head 7, and an inner knob 8 are provided inside the machine body. The lower end of the drive shaft 6 is fixedly connected to the inner grinding head 5, and the upper end of the drive shaft 6 is drivenly connected to the output end of the motor 12. The outer grinding head 7 is fixed inside the machine body, and the inner grinding head 5 and the outer grinding head 7 are configured to cooperate with each other, with a grinding gap 10 formed between the inner grinding head 5 and the outer grinding head 7. The inner knob 8 is correspondingly configured with the drive shaft 6. The machine body is provided with a rotatable outer knob 4, which is threadedly connected to the inner knob 8. By rotating the outer knob 4, the inner knob 8 is driven to move the drive shaft 6 and the inner grinding head 5 relative to the outer grinding head 7, thereby adjusting the size of the grinding gap 10. With this setup, during adjustment, the outer knob 4 located on the machine body is rotated, causing it to move in a threaded motion with the inner knob 8. This, in turn, drives the inner knob 8 to raise and lower the transmission shaft 6 and the inner grinding head 5 relative to the outer grinding head 7, thereby adjusting the size of the grinding gap 10. This design is convenient to operate and does not affect the quality of the coffee. Its overall structure is compact, making it easy to carry and store.

[0030] In the coffee bean grinder described in this utility model, the inner grinding head 5 is rotated by the transmission shaft 6 driven by the motor 12 during grinding. During the rotation of the inner grinding head 5, it cooperates with the outer grinding head 7 to grind the coffee beans into powder. The inner grinding head 5 is a moving grinding head, and the outer grinding head 7 is a stationary grinding head.

[0031] Further, the machine body comprises an upper shell 1, a middle shell 2 and a lower shell 3, the upper end of the middle shell 2 is detachably connected with the upper shell 1, the lower end of the middle shell 2 is detachably connected with the lower shell 3, the motor 12 is fixed in the upper shell 1, a sleeve 21 is arranged in the middle shell 2, the upper end of the transmission shaft 6 is drivingly connected with the output end of the motor 12, the lower end of the transmission shaft 6 is fixedly connected with the inner grinding head 5 after penetrating through the sleeve 21, the inner knob 8 is located in the middle shell 2 in a liftable manner, and a powder storage cavity 31 is formed in the lower shell 3. In this way, the machine body structure is simple, and the machine body is convenient to assemble and disassemble; during use, the upper shell 1 is detached from the middle shell 2 to put beans, then the upper shell 1 is assembled to start grinding, after grinding, the coffee powder falls into the powder storage cavity 31, and after grinding is completed, the lower shell 3 is detached from the middle shell 2 to take the powder.

[0032] Further, the inner knob 8 is fixed with a connecting rod 81, a through hole 83 is arranged at the center of the connecting rod 81, the lower end of the transmission shaft 6 is fixedly connected with the inner grinding head 5 after penetrating through the sleeve 21 and the through hole 83, an upper bearing 22 corresponding to the transmission shaft 6 is arranged in the upper end of the sleeve 21, and a lower bearing 23 corresponding to the transmission shaft 6 is arranged in the lower end of the sleeve 21; the upper and lower surfaces of the connecting rod 81 are limited by a clamping ring 82 clamped on the transmission shaft 6 and a limiting ring 63 arranged on the transmission shaft 6, and a spring 62 is arranged on the transmission shaft 6 between the clamping ring 82 and the sleeve 21. In this way, the upper and lower surfaces of the connecting rod 81 are limited by the clamping ring 82 and the limiting ring 63, when the outer knob 4 and the inner knob 8 are threadedly moved, the connecting rod 81 of the inner knob 8 drives the clamping ring 82 or the limiting ring 63 to move, and then drives the transmission shaft to move, wherein, the transmission shaft 6 rotates more smoothly, more stably and with less noise under the cooperation of the upper bearing 22 and the lower bearing 23.

[0033] In actual application, the through hole 83 arranged at the center of the connecting rod 81 is larger than the diameter of the transmission shaft 6, so that the transmission shaft 6 can rotate relative to the connecting rod 81, and after assembly, the central axes of the transmission shaft 6, the sleeve 21, the inner knob 8 and the inner grinding head 5 are on the same straight line.

[0034] Further, the middle shell 2 is fixed with a fixed seat 25 and an outer limiting seat 29, the lower end of the fixed seat 25 is threadedly connected with the lower shell 3, the upper end of the fixed seat 25 is fixed with an inner limiting seat 24 and an outer grinding head 7, the outer grinding head 7 is located in the inner limiting seat 24, the inner knob 8 is slidingly lifted between the outer limiting seat 29 and the inner limiting seat 24 by rotating the outer knob 4, and a guiding assembly is arranged between the inner knob 8 and the outer limiting seat 29. In this way, the fixed seat 25 is fixed in the middle shell 2, the two ends of the fixed seat 25 are open, the lower end is used for threadedly connecting with the lower shell 3, the upper end is used for fixedly arranging the inner limiting seat 24 and the outer grinding head 7, and the fixed seat 25 is convenient to assemble and disassemble.

[0035] Further, the guide assembly comprises a guide block 84 arranged on the inner knob 8 and a guide groove 291 arranged on the outer limiting seat 29, the guide block 84 is in sliding connection with the guide groove 291, and an outer thread 85 is arranged on the outer wall of the guide block 84, an inner thread 43 matched with the outer thread 85 is arranged on the inner wall of the outer knob 4, and an anti-skid pattern 41 is arranged on the outer wall of the outer knob 4. In this way, when the inner knob 8 is assembled, the inner knob 8 is assembled in alignment with the guide groove 291 through the guide block 84, and when the outer knob 4 is rotated and the inner knob 8 moves in threads, the inner knob 8 slides up and down under the limiting of the sliding connection between the guide block 84 and the guide groove 291.

[0036] In actual application, the lifting stroke of the inner knob 8 is smaller than the height of the guide groove 291, so that the guide block 84 is always located in the guide groove 291 for limiting when the inner knob 8 is lifted.

[0037] Further, a plurality of positioning beads 292 are fixed on the outer limiting seat 29, and a retractable ball bead is arranged on each positioning bead 292; a positioning groove 42 is arranged around the inner wall of the outer knob 4, and the positioning groove 42 and the ball bead correspondingly clamps. In this way, the retractable ball bead (the positioning bead 292 is prior art) is arranged on each positioning bead 292, and the ball bead and the positioning groove 42 arranged around the inner wall of the outer knob 4 correspondingly clamp, so that the outer knob 4 can be clamped with the ball bead at a certain position, the position is more accurate, and after adjustment, the outer knob 4 will not change threads with the inner knob 8 under the clamping of the positioning groove 42 and the ball bead.

[0038] Further, the fixing seat 25 is provided with a mounting step one 251 matched with the bottom of the inner limiting seat 24 and a mounting step two 252 matched with the bottom of the inner knob 8; a flat one 71 is arranged on the outer wall of the outer grinding head 7, and a flat two 241 matched with the flat one 71 for limiting is arranged on the inner wall of the inner limiting seat 24. In this way, after the outer grinding head 7 is assembled, the fixing effect is better, and the outer grinding head 7 will not rotate relative to the inner limiting seat 24 under the limiting action of the flat one 71 and the flat two 241 during assembly.

[0039] Further, the inner grinding head 5 is a circular table structure, the outer grinding teeth 51 are formed on the outer wall of the inner grinding head 5, the outer grinding head 7 is a circular tube structure, the inner grinding teeth 72 matched with the outer grinding teeth 51 are arranged on the inner wall of the outer grinding head 7, and the grinding gap 10 is located between the outer grinding teeth 51 and the inner grinding teeth 72. In this way, the outer grinding teeth 51 on the outer wall of the inner grinding head 5 and the inner grinding teeth 72 on the outer grinding head 7 are matched to realize extrusion grinding of coffee beans, and the grinding effect is better.

[0040] Further, the upper shell 1 is formed with a screw buckle one 15, the middle shell 2 is formed with a screw buckle two 26, the screw buckle one 15 is matched and screwed with the screw buckle two 26, the screw buckle one 15 is formed with a locking groove 16, the screw buckle two 26 is formed with a locking pin 28, when the screw buckle one 15 is screwed with the screw buckle two 26, the locking pin 28 is matched and clamped with the locking groove 16. In this way, it is convenient to assemble and disassemble, and the locking effect is achieved under the cooperation of the locking pin 28 and the locking groove 16, so that the upper shell 1 cannot be screwed out of the middle shell 2 by itself, and only under the action of force, the upper shell 1 and the middle shell 2 can be disassembled.

[0041] Preferably, the screw buckle one 15 and the screw buckle two 26 have a certain elasticity.

[0042] Further, the middle shell 2 is provided with a feeding port, the feeding port is provided with a detachable cover 27, the output end of the motor 12 is provided with a shaft coupling 13, the shaft coupling 13 is drivingly connected with the upper end of the transmission shaft 6, the upper shell 1 is further provided with a storage battery 14, and the upper shell 1 is provided with a charging port 11 and a heat dissipation hole. In this way, the storage battery 14 is arranged to provide power support, so that the coffee bean grinder is convenient to carry and use, an external power plug is not needed, use is more convenient, and the storage battery 14 can be charged through the charging port 11.

[0043] In actual application, the upper end of the transmission shaft 6 is a non-circular end (preferably a polygonal end), the lower end of the shaft coupling 13 is a non-circular hole (preferably a polygonal hole), and the transmission shaft 6 and the shaft coupling 13 are coupled; the heat dissipation hole can discharge the heat generated by the motor 12, the storage battery 14 and the electric plate, and improve the working performance and service life of the whole machine.

[0044] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, not restrictive, and the person skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, and these all belong to the protection scope of the utility model.

Claims

1. An adjustable particle precision coffee bean grinder, comprising a body, characterized in that: a motor (12), a transmission shaft (6), an inner grinding head (5), an outer grinding head (7) and an inner knob (8) are arranged in the body, the lower end of the transmission shaft (6) is fixedly connected with the inner grinding head (5), the upper end of the transmission shaft (6) is drivingly connected with the output end of the motor (12), the outer grinding head (7) is fixed in the body, the inner grinding head (5) is arranged in cooperation with the outer grinding head (7), and a grinding gap (10) is formed between the inner grinding head (5) and the outer grinding head (7), and the inner knob (8) is arranged in correspondence with the transmission shaft (6); a rotatable outer knob (4) is arranged on the body, the outer knob (4) is threadedly connected with the inner knob (8), the outer knob (4) is rotated to drive the inner knob (8) to drive the transmission shaft (6) and the inner grinding head (5) to ascend and descend relative to the outer grinding head (7), so as to adjust the size of the grinding gap (10).

2. A coffee bean grinder with adjustable particle fineness according to claim 1, characterized in that: The body comprises an upper shell (1), a middle shell (2) and a lower shell (3), the upper end of the middle shell (2) is detachably connected with the upper shell (1), the lower end of the middle shell (2) is detachably connected with the lower shell (3), the motor (12) is fixed in the upper shell (1), a sleeve (21) is arranged in the middle shell (2), the upper end of the transmission shaft (6) is drivingly connected with the output end of the motor (12), the lower end of the transmission shaft (6) is fixedly connected with the inner grinding head (5) after penetrating through the sleeve (21), the inner knob (8) is arranged in the middle shell (2) in a liftable manner, and a powder storage cavity (31) is formed in the lower shell (3).

3. A coffee bean grinder with adjustable particle fineness according to claim 2, characterized in that: A connecting rod (81) is fixed on the inner knob (8), a through hole (83) is arranged at the center of the connecting rod (81), the lower end of the transmission shaft (6) is fixedly connected with the inner grinding head (5) after penetrating through the sleeve (21) and the through hole (83), an upper bearing (22) corresponding to the transmission shaft (6) is arranged in the upper end of the sleeve (21), and a lower bearing (23) corresponding to the transmission shaft (6) is arranged in the lower end of the sleeve (21); the upper and lower surfaces of the connecting rod (81) are limited by a clamping ring (82) clamped on the transmission shaft (6) and a limiting ring (63) arranged on the transmission shaft (6), and a spring (62) is sleeved on the transmission shaft (6) between the clamping ring (82) and the sleeve (21).

4. The coffee bean grinder with adjustable particle fineness according to claim 2, characterized in that: A fixed seat (25) and an outer limiting seat (29) are fixed in the middle shell (2), the lower end of the fixed seat (25) is threadedly connected with the lower shell (3), an inner limiting seat (24) and the outer grinding head (7) are fixed on the upper end of the fixed seat (25), the outer grinding head (7) is located in the inner limiting seat (24), the inner knob (8) is driven to slide and ascend and descend between the outer limiting seat (29) and the inner limiting seat (24) by rotating the outer knob (4), and a guide assembly is arranged between the inner knob (8) and the outer limiting seat (29).

5. A coffee bean grinder with adjustable particle fineness according to claim 4, characterized in that: The guide assembly comprises a guide block (84) arranged on the inner knob (8) and a guide groove (291) arranged on the outer limiting seat (29), the guide block (84) is in sliding connection with the guide groove (291), and an outer thread (85) is arranged on the outer wall of the guide block (84), an inner thread (43) matched with the outer thread (85) is arranged on the inner wall of the outer knob (4), and an anti-skid pattern (41) is arranged on the outer wall of the outer knob (4).

6. A coffee bean grinder with adjustable particle fineness according to claim 5, characterized in that: A plurality of positioning beads (292) are fixed on the outer limiting seat (29), and retractable ball beads are arranged on the plurality of positioning beads (292); a positioning groove (42) is arranged in a ring on the inner wall of the outer knob (4), and the positioning groove (42) and the ball beads correspondingly clamp.

7. The coffee bean grinder with adjustable particle fineness according to claim 4, characterized in that: The fixing seat (25) is provided with a mounting step one (251) matched with the bottom of the inner limiting seat (24) and a mounting step two (252) matched with the bottom of the inner knob (8); a flat position one (71) is arranged on the outer wall of the outer grinding head (7), and a flat position two (241) matched with the flat position one (71) for limiting is arranged on the inner wall of the inner limiting seat (24).

8. The coffee bean grinder with adjustable particle fineness according to claim 2, characterized in that: The inner grinding head (5) is a circular table structure, the outer wall of the inner grinding head (5) is formed with an outer grinding tooth (51), the outer grinding head (7) is a circular tube structure, the inner wall of the outer grinding head (7) is provided with an inner grinding tooth (72) matched with the outer grinding tooth (51), and the grinding gap (10) is located between the outer grinding tooth (51) and the inner grinding tooth (72).

9. The coffee bean grinder with adjustable particle fineness according to claim 2, characterized in that: The upper shell (1) is formed with a screw joint buckle one (15), the middle shell (2) is formed with a screw joint buckle two (26), the screw joint buckle one (15) and the screw joint buckle two (26) are matched and screwed, the screw joint buckle one (15) is formed with a locking groove (16), the screw joint buckle two (26) is formed with a locking pin (28), when the screw joint buckle one (15) and the screw joint buckle two (26) are screwed, the locking pin (28) and the locking groove (16) are matched and clamped.

10. The coffee bean grinder with adjustable particle fineness according to claim 2, characterized in that: The middle shell (2) is provided with a feeding port, the feeding port is provided with a detachable cover (27), the output end of the motor (12) is provided with a shaft coupling (13), the shaft coupling (13) is drivingly connected with the upper end of the transmission shaft (6), the upper shell (1) is further provided with a battery (14), and the upper shell (1) is provided with a charging port (11) and a heat dissipation hole.

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