Wall-mounted curtain battery box

Abstract

The utility model relates to a wall-mounted curtain battery box. The technical problem that an existing curtain battery is low in assembling and disassembling efficiency is solved. Comprising a fixed shell installed on a wall, a movable shell is arranged on one side of the fixed shell, an installation space for containing a battery assembly is formed between the fixed shell and the movable shell, one end of the movable shell is provided with a shell barrel-shaped part allowing one end of the battery assembly to be inserted, and the movable shell and the battery assembly are connected through a radial clamping structure. And the battery assembly is mounted and fixed on the fixed shell through the axial insertion positioning structure. The battery pack fixing structure has the advantages that the battery pack can be conveniently connected with the fixing shell and the fixing shell through the axial insertion positioning structure and the radial clamping structure, the connection effect of the battery pack is ensured, the battery pack can be conveniently assembled and disassembled, and the assembling and disassembling efficiency is improved; through the shell cylindrical part, the positioning block and the positioning groove, the positioning installation efficiency between the battery assembly and the fixed shell and the movable shell can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of curtain battery equipment, specifically relates to a wall curtain battery box. BACKGROUND

[0002] The existing electric curtain is directly powered through the power socket, but the electric curtain cannot run in the power-off environment, which affects the user experience, so the electric curtain on the market is provided with a curtain battery, which can stably power the curtain and ensure the stable operation of the curtain, but the curtain battery needs to be regularly disassembled and charged during use, and the mounting structure of the existing curtain battery in the electric curtain is relatively complex, which reduces the disassembly and assembly efficiency of the curtain battery and affects the charging efficiency of the curtain battery. SUMMARY

[0003] The utility model aims at the above -mentioned problem, provides a wall curtain battery box.

[0004] To achieve the above object, the utility model adopts the following technical scheme: the wall curtain battery box, including the fixed shell of installing on the wall, the fixed shell one side is equipped with the movable shell and the fixed shell and movable shell between form the installation space containing battery assembly, movable shell one end has the shell barrel portion that battery assembly one end inserts, movable shell and battery assembly between are connected through radial clamping structure, and battery assembly is installed and fixed on the fixed shell through axial plug -in positioning structure, through the installation space can be convenient for battery assembly to place, and through the shell body barrel portion can be convenient for battery assembly plug -in setting in movable shell, and through radial clamping structure can guarantee the installation stability between movable shell and battery assembly, and through axial plug -in positioning structure can guarantee the connection stability between fixed shell and battery assembly.

[0005] In the wall curtain battery box, the fixed shell and the movable shell are both curved plate-shaped, and the fixed shell and the movable shell are radially surrounded to form a cylindrical structure that can wrap the circumferential outer side of the battery assembly and be adapted to the shell cylindrical part, and the installation space is formed in the cylindrical structure. The cylindrical structure can improve the surrounding effect of the fixed shell and the movable shell on the battery assembly, reduce the gap between the cylindrical structure and the battery assembly, and ensure that the battery assembly is stably arranged in the cylindrical structure.

[0006] In the wall-mounted curtain battery box, the fixed shell has a fixed end cover extending towards the movable shell and capable of closing one end of the cylindrical structure, the battery assembly abuts against the fixed end cover, the fixed end cover is in an integral structure with the fixed shell, the structural strength between the fixed end cover and the fixed shell is improved, the service life is improved, the fixed end cover is provided with a positioning block A extending towards the battery assembly, the battery assembly is provided with a positioning groove B matched with the positioning block A, and the battery assembly is fixedly abutted against the fixed end cover through the positioning groove B and the positioning block A.

[0007] In the wall-mounted curtain battery box, the battery assembly comprises a battery shell, the battery shell is provided with a battery body and a battery circuit board connected with each other, and the battery shell is formed by combining a battery upper cover and a battery lower cover, the battery shell can protect the battery body and the battery circuit board, the battery upper cover and the battery lower cover can facilitate the assembly and disassembly of the battery body, the battery body can be conveniently disassembled and replaced, the replacement efficiency is improved, and the positioning groove B is arranged at one end of the battery upper cover.

[0008] In the wall-mounted curtain battery box, the radial clamping structure comprises a plurality of clamping bodies arranged on the movable shell close to the fixed shell, the clamping bodies are arranged on the two sides of the movable shell one by one, the battery upper cover is provided with a plurality of clamping grooves corresponding to the clamping bodies on the two sides, the clamping bodies and the clamping grooves are clamped and positioned, one end of the clamping groove is larger than the other end, the clamping body is inserted into the larger end of the clamping groove and is arranged in sliding mode at the smaller end and abuts against the battery upper cover, the clamping effect between the clamping body and the clamping groove is ensured, and the clamping stability between the movable shell and the motor upper cover is improved.

[0009] In the wall-mounted curtain battery box, the axial insertion positioning structure comprises axial positioning grooves arranged on the two sides of the battery lower cover along the battery shell, and positioning protrusions corresponding to the axial positioning grooves are arranged on the two sides of the fixed shell, the positioning protrusions and the axial positioning grooves are inserted into each other, the connection stability between the battery lower cover and the fixed shell is ensured through the positioning protrusions and the axial positioning grooves.

[0010] In the wall-mounted curtain battery box, the width of the axial positioning groove away from the one end of the shell cylindrical part is greater than the width of the positioning protrusion and the width of the axial positioning groove close to the one end of the shell cylindrical part, and the positioning protrusion is inserted into the one end of the axial positioning groove with greater width and slides to the one end of the axial positioning groove with smaller width and is positioned inside the one end of the axial positioning groove with smaller width, so that the positioning protrusion can be quickly inserted into the axial positioning groove, the insertion efficiency is improved, and the sliding to the inside of the one end of the axial positioning groove with smaller width can ensure the connection effect between the positioning protrusion and the axial positioning groove.

[0011] In the wall-mounted curtain battery box, the one end of the fixed shell close to the shell cylindrical part is provided with a first inclined part inclined towards the movable shell, the one end of the shell cylindrical part close to the fixed shell is provided with a second inclined part corresponding to the first inclined part, a gap is formed between the first inclined part and the second inclined part, the battery shell body is provided with a charging port connected with the battery body and / or the battery circuit board, the one end of the shell cylindrical part away from the fixed shell is provided with an opening, and the opening is closed by a movable cover plate, and the movable cover plate is connected to the end of the battery shell body by clamping, the battery body can be charged through the charging port, the charging port can be closed by the movable cover plate, and the charging port is protected.

[0012] In the wall-mounted curtain battery box, the one end of the battery lower cover is provided with a recess extending to the one end of the battery shell body, the recess is provided with two contacts connected with the battery circuit board respectively, the outer side of the fixed shell is provided with a groove recessed towards the movable shell, the groove forms a boss corresponding to the recess on the inner side of the fixed shell, two connecting conductors are arranged in the groove, the connecting conductors pass through the boss and abut against the contacts respectively, a plurality of mounting columns flush with the outer side of the fixed shell are arranged in the groove, a shell mounting hole penetrating through the boss is arranged in the mounting column, and a shielding plate can be detachably arranged on the boss, the connecting conductors can be connected with the battery circuit board through the contacts, and the connecting conductors can transmit power, the one end of an expansion screw abutting against the mounting column and the other end connected to the wall body are arranged in the shell mounting hole, the fixed shell can be fixedly connected to the wall body through the expansion screw, and the shell mounting hole and the expansion screw can be shielded by the shielding plate, and the appearance can be improved.

[0013] In the wall curtain battery box, the battery shell is provided with a control circuit board on the side of the battery upper cover and connected with the battery circuit board, the control circuit board is provided with a button and / or a display lamp, the movable shell is provided with a ring-shaped boss corresponding to the control circuit board, the ring-shaped boss is provided with a hole slot for inserting the button and the display lamp respectively, the hole slot can facilitate the installation stability of the button and the display effect of the display lamp, the control circuit board can control the battery assembly, the ring-shaped boss can facilitate the user to operate the button, the button can facilitate the user to control, and the display lamp can facilitate the user to observe the power of the battery body, so that the user can charge the battery body in time.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1, through the axial plug-in positioning structure and radial clamping structure can facilitate the connection of battery assembly and fixed shell and fixed shell, ensure the connection effect of battery assembly, and can facilitate the dismounting of battery assembly, improve the dismounting efficiency.

[0016] 2, through the shell cylindrical part can facilitate the battery assembly to be positioned and inserted into the movable shell, and through the positioning block and the positioning groove can facilitate the battery assembly to be positioned and inserted on the fixed shell, improve the positioning and installation efficiency of the battery assembly.

[0017] 3, through the control circuit board and button can facilitate the user to control the battery assembly, and through the display lamp can facilitate the user to observe the power of the battery body, can charge the battery body at any time.

[0018] 4, through the battery assembly can be used simultaneously with multiple motors, improve the applicability of the curtain battery box, improve the user experience. ACCURACY

[0019] Figure 1 It is the structure schematic diagram of the utility model.

[0020] Figure 2 It is the structure explosion drawing of the utility model.

[0021] Figure 3 It is the structure schematic diagram of the movable shell in the utility model.

[0022] Figure 4 It is the structure explosion drawing of the battery lower cover in the utility model.

[0023] Figure 5 It is the structure schematic diagram of the fixed shell in the utility model.

[0024] Figure 6 It is the structure schematic diagram of the battery assembly in the utility model.

[0025] Figure 7 This is an exploded view of the battery assembly structure in this utility model.

[0026] In the diagram: Fixed outer shell 1, Fixed end cap 11, First inclined part 12, Groove 13, Boss 14, Mounting post 15, Outer shell mounting hole 16, Cover plate 17, Movable outer shell 2, Outer shell cylindrical part 21, Second inclined part 211, Opening 212, Annular boss 22, Hole groove 221, Battery assembly 3, Battery housing 31, Charging port 311, Battery body 32, Battery circuit board 33, Battery upper cover 34, Battery lower cover 35, Recessed part 351, Contact point 352, Installation space 4, Radial snap-fit ​​structure 5, Snap-fit ​​body 51, Snap-fit ​​groove 52, Axial insertion positioning structure 6, Axial positioning groove 61, Positioning protrusion 62, Cylindrical structure 7, Movable cover plate 8, Connecting conductor 9, Control circuit board 10, Button 101, Indicator light 102, Positioning block A, Positioning groove B. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 , Figure 2 As shown, this wall-mounted curtain battery box includes a fixed outer shell 1 installed on the wall. A movable outer shell 2 is provided on one side of the fixed outer shell 1, and an installation space 4 for accommodating a battery assembly 3 is formed between the fixed outer shell 1 and the movable outer shell 2. The size of the installation space 4 is larger than the size of the battery assembly 3. One end of the movable outer shell 2 has a cylindrical portion 21 for inserting one end of the battery assembly 3. The movable outer shell 2 and the battery assembly 3 are connected by a radial snap-fit ​​structure 5, and the battery assembly 3 is installed and fixed on the fixed outer shell 1 by an axial insertion positioning structure 6. The installation space 4 facilitates the placement of the battery assembly 3, and the cylindrical portion 21 facilitates the insertion and placement of the battery assembly 3 into the movable outer shell 2. The radial snap-fit ​​structure 5 ensures the installation stability between the movable outer shell 2 and the battery assembly 3, and the axial insertion positioning structure 6 ensures the connection stability between the fixed outer shell 1 and the battery assembly 3.

[0029] Specifically, both the fixed outer shell 1 and the movable outer shell 2 are curved plates, and the fixed outer shell 1 and the movable outer shell 2 radially enclose each other to form a cylindrical structure 7 that can wrap the battery assembly 3 on the outer periphery and is adapted to the cylindrical part 21 of the outer shell. The installation space 4 is formed inside the cylindrical structure 7. The cylindrical structure 7 can improve the enclosure effect of the fixed outer shell 1 and the movable outer shell 2 on the battery assembly 3, reduce the gap between the cylindrical structure 7 and the battery assembly 3, and ensure that the battery assembly 3 is stably installed inside the cylindrical structure 7.

[0030] The fixed shell 1 has a fixed end cover 11 extending towards the movable shell 2 and capable of closing one end of the cylindrical structure 7, the battery assembly 3 abuts against the fixed end cover 11, the fixed end cover 11 is an integral structure with the fixed shell 1, the structural strength between the fixed end cover 11 and the fixed shell 1 is improved, the service life is improved, and the fixed end cover 11 is provided with a positioning block A extending towards the battery assembly 3, the battery assembly 3 is provided with a positioning groove B matched with the positioning block A, and the battery assembly 3 is fixedly abutted against the fixed end cover 11 through the positioning groove B and the positioning block A.

[0031] As shown in Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 The battery assembly 3 includes a battery shell 31, the battery shell 31 is provided with a battery body 32 and a battery circuit board 33 connected with each other, and the battery shell 31 is composed of a battery upper cover 34 and a battery lower cover 35, the battery shell 31 can protect the battery body 32 and the battery circuit board 33, the battery upper cover 34 and the battery lower cover 35 can facilitate the assembly and disassembly of the battery body 32, and the battery body 32 can be easily disassembled and replaced, the replacement efficiency is improved, and the above-mentioned positioning groove B is arranged at one end of the battery upper cover 34.

[0032] Further, the radial clamping structure 5 includes a plurality of clamping bodies 51 arranged on the side of the movable shell 2 close to the fixed shell 1, the clamping bodies 51 are arranged on both sides of the movable shell 2 one by one, the battery upper cover 34 is provided with a plurality of clamping grooves 52 corresponding to the clamping bodies 51 one by one on both sides, the clamping bodies 51 and the clamping grooves 52 are clamped and positioned with each other, one end of the clamping groove 52 is larger than the other end, the clamping body 51 is inserted into the larger end of the clamping groove 52 and is arranged in sliding mode at the smaller end and abuts against the battery upper cover 34, the clamping effect between the clamping body 5 and the clamping groove 52 is ensured, and the clamping stability between the movable shell 2 and the motor upper cover 34 is improved.

[0033] The axial insertion positioning structure 6 includes axial positioning grooves 61 arranged on both sides of the battery lower cover 35 along the battery shell 31, and the fixed shell 1 is provided with positioning protrusions 62 corresponding to the axial positioning grooves 61 on both sides, the positioning protrusions 62 and the axial positioning grooves 61 are inserted with each other, the connection stability between the battery lower cover 35 and the fixed shell 1 is ensured through the positioning protrusions 62 and the axial positioning grooves 61.

[0034] In combination with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7As shown, the width of the axial positioning groove 61 away from the one end of the shell cylindrical part 21 is greater than the width of the positioning protrusion 62 and the width of the axial positioning groove 61 close to the one end of the shell cylindrical part 21, and the positioning protrusion 62 is inserted into the one end of the axial positioning groove 61 with greater width and slides from the one end of the axial positioning groove 61 with greater width to the one end with smaller width and is positioned inside the one end of the axial positioning groove 61 with smaller width, which can facilitate the quick insertion of the positioning protrusion 62 into the axial positioning groove 61, improve the insertion efficiency, and sliding into the smaller one end of the axial positioning groove 61 can ensure the connection effect between the positioning protrusion 62 and the axial positioning groove 61.

[0035] Wherein, the fixed shell 1 has a first inclined part 12 inclinedly arranged towards the movable shell 2 at the one end close to the shell cylindrical part 21, and the shell cylindrical part 21 has a second inclined part 211 corresponding to the first inclined part 12 at the one end close to the fixed shell 1, and a gap is formed between the first inclined part 12 and the second inclined part 211, through which the user can easily hold the battery body 32 and quickly disassemble the movable shell 2, improving the disassembly efficiency, and the battery shell 31 is provided with a charging port 311 connected to the battery body 32 and / or the battery circuit board 33, and the one end of the shell cylindrical part 21 away from the fixed shell 1 has an opening 212 closed by the movable cover plate 8, and the charging port 311 is arranged in the opening 212, and the movable cover plate 8 is connected to the end of the battery shell 31 by clamping, through which the battery body 32 can be charged, and the movable cover plate 8 can close the charging port 311, which plays a protective role for the charging port 311.

[0036] Specifically, the battery lower cover 35 has a recessed part 351 extending to one end of the battery shell 31, and the recessed part 351 is provided with two contacts 352 connected to the battery circuit board 33 respectively, the fixed shell 1 is provided with a recess 13 recessed towards the movable shell 2, the recess 13 forms a boss 14 corresponding to the recessed part 351 on the inner side of the fixed shell 1, two connecting conductors 9 are arranged in the recess 13, and the connecting conductors 9 pass through the boss 14 and abut against the contacts 352 respectively, and a plurality of mounting columns 15 flush with the outer side of the fixed shell 1 are arranged in the recess 13, and the mounting columns 15 are provided with shell mounting holes 16 penetrating through the boss 14, and a shielding plate 17 is detachably arranged on the boss 14, the connecting conductors 9 can be connected to the battery circuit board 33 through the contacts 352, and can transmit power through the connecting conductors 9 and can supply power to multiple motors at the same time, improving the applicability of the battery assembly 3 and the user experience, and the shell mounting hole 16 is provided with an expansion screw having one end abutting against the mounting column 15 and the other end connected to the wall, through which the fixed shell 1 can be fixedly connected to the wall, and the shielding plate 17 can shield the shell mounting hole 16 and the expansion screw, improving the aesthetics.

[0037] In combinationFigure 3 、 Figure 6 、 Figure 7 As shown in the figure, the battery shell 31 is provided with a control circuit board 10 on the side of the battery upper cover 34 and connected with the battery circuit board 33, the control circuit board 10 is provided with a button 101 and / or a display lamp 102, the movable shell 2 is provided with a ring-shaped boss 22 corresponding to the control circuit board 10, and the ring-shaped boss 22 is provided with a hole slot 221 for inserting the button 101 and the display lamp 102 respectively, the hole slot 221 can facilitate the installation stability of the button 101 and the display effect of the display lamp 102, the control circuit board 10 can control the battery assembly 3, the ring-shaped boss 22 can facilitate the user to operate the button 101, the button 101 can facilitate the user to control, and the display lamp 102 can facilitate the user to observe the power of the battery body 32, which can facilitate the user to charge the battery body 32 in time.

[0038] The principle of the embodiment is that one end of the battery assembly 3 is arranged in the movable shell 2 and slidably arranged towards the shell cylindrical part 21, the two sides of the battery assembly 3 are connected with the movable shell 2 through the radial clamping structure 5, one end of the battery assembly 3 is arranged in the opening 212 and closed by the movable cover plate 8, the fixed shell 1 is fixedly arranged on the wall through the expansion screws in the shell mounting hole 16, one end of the battery assembly 3 is connected with the fixed shell 1 through the positioning recess B and the positioning block, the two sides of the battery assembly 3 are connected with the fixed shell 1 through the axial plug-in positioning structure 6 to ensure the connection stability between the battery assembly 3 and the fixed shell 1, and the battery assembly 3 is fixedly arranged in the mounting space 4.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0040] Although the terms fixed shell 1, fixed end cover 11, first inclined part 12, groove 13, boss 14, mounting column 15, shell mounting hole 16, shielding plate 17, movable shell 2, shell cylindrical part 21, second inclined part 211, open part 212, annular boss 22, hole groove 221, battery assembly 3, battery shell 31, charging port 311, battery body 32, battery circuit board 33, battery upper cover 34, battery lower cover 35, recessed part 351, contact 352, mounting space 4, radial clamping structure 5, clamping body 51, clamping groove 52, axial insertion positioning structure 6, axial positioning groove 61, positioning protrusion 62, cylindrical structure 7, movable cover plate 8, connecting conductor 9, control circuit board 10, button 101, display lamp 102, positioning block A, positioning groove B and other terms are used more frequently in this document, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the utility model; any additional limitation is contrary to the spirit of the utility model.

Claims

1. A wall-mounted window shade battery pack comprising a fixed housing (1) mounted on a wall, characterized in that, The fixed shell (1) is provided with a movable shell (2) on one side, and the fixed shell (1) and the movable shell (2) form a mounting space (4) for accommodating a battery assembly (3). The movable shell (2) has a shell cylindrical part (21) at one end for inserting one end of the battery assembly (3). The movable shell (2) and the battery assembly (3) are connected through a radial clamping structure (5), and the battery assembly (3) is fixedly installed on the fixed shell (1) through an axial plug-in positioning structure (6).

2. A wall-mounted window shade battery pack according to claim 1, wherein, The fixed shell (1) and the movable shell (2) are both curved plates, and the fixed shell (1) and the movable shell (2) are radially surrounded to form a cylindrical structure (7) that can wrap the circumferential outer side of the battery assembly (3) and match the shell cylindrical part (21). The mounting space (4) is formed in the cylindrical structure (7).

3. A wall-mounted window shade battery pack according to claim 2, wherein, The fixed shell (1) has a fixed end cover (11) extending towards the movable shell (2) at the end away from the shell cylindrical part (21) and capable of closing one end of the cylindrical structure (7). One end of the battery assembly (3) abuts against the fixed end cover (11).

4. A wall-mounted window curtain battery box according to claim 1 or 2 or 3, wherein, The battery assembly (3) includes a battery housing (31), and the battery housing (31) is provided with a battery body (32) and a battery circuit board (33) connected to each other. The battery housing (31) is composed of a battery upper cover (34) and a battery lower cover (35).

5. A wall-mounted window shade battery pack according to claim 4, wherein, The radial clamping structure (5) includes a plurality of clamping bodies (51) provided on the side of the movable shell (2) close to the fixed shell (1). The clamping bodies (51) are provided on both sides of the movable shell (2) one by one. The battery upper cover (34) is provided with a plurality of clamping grooves (52) corresponding to the clamping bodies (51) on both sides. The clamping bodies (51) and the clamping grooves (52) are clamped and positioned with each other.

6. A wall-mounted window shade battery pack according to claim 4, wherein, The axial plug-in positioning structure (6) includes axial positioning grooves (61) provided on both sides of the battery lower cover (35) along the axis of the battery housing (31). The fixed shell (1) is provided with positioning protrusions (62) corresponding to the axial positioning grooves (61) on both sides inside. The positioning protrusions (62) and the axial positioning grooves (61) are inserted with each other.

7. A wall-mounted window shade battery pack according to claim 6, wherein, The width of the end of the axial positioning groove (61) away from the shell cylindrical part (21) is greater than the width of the positioning protrusion (62) and the width of the end of the axial positioning groove (61) close to the shell cylindrical part (21). The positioning protrusion (62) is inserted into the end of the axial positioning groove (61) with greater width, and slides from the end with greater width to the end with smaller width and is positioned inside the end with smaller width of the axial positioning groove (61).

8. A wall-mounted window shade battery pack according to claim 4, wherein, The fixed shell (1) is provided with a first inclined part (12) inclined towards the movable shell (2) near one end of the shell cylindrical part (21), the shell cylindrical part (21) is provided with a second inclined part (211) corresponding to the first inclined part (12) near one end of the fixed shell (1), a gap is formed between the first inclined part (12) and the second inclined part (211), the battery housing (31) is provided with a charging port (311) connected with the battery body (32) and / or the battery circuit board (33), the shell cylindrical part (21) is provided with an opening (212) away from one end of the fixed shell (1), and the opening (212) is closed by a movable cover plate (8), and the movable cover plate (8) is connected to the end of the battery housing (31) by clamping.

9. A wall-mounted window shade battery pack according to claim 4, wherein, The battery lower cover (35) is provided with a recessed part (351) extending to one end of the battery housing (31), the recessed part (351) is provided with two contacts (352) connected with the battery circuit board (33) respectively, the fixed shell (1) is provided with a groove (13) recessed towards the movable shell (2) on the outside, the groove (13) forms a boss (14) corresponding to the recessed part (351) on the inside of the fixed shell (1), the groove (13) is provided with two connecting conductors (9), the connecting conductors (9) pass through the boss (14) and abut against the contacts (352) respectively, a plurality of mounting columns (15) flush with the outside of the fixed shell (1) are arranged in the groove (13), the mounting columns (15) are provided with shell mounting holes (16) penetrating the boss (14), and the boss (14) is detachably provided with a shielding plate (17).

10. The wall-mounted window covering battery pack of claim 4, wherein, The battery housing (31) is provided with a control circuit board (10) connected with the battery circuit board (33) on the outside of the battery upper cover (34) side, the control circuit board (10) is provided with a key (101) and / or a display lamp (102), the movable shell (2) is provided with an annular boss (22) corresponding to the control circuit board (10) on the outside, and the annular boss (22) is provided with hole grooves (221) for the key (101) and the display lamp (102) to be inserted respectively.

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