Power supply shell with telescopic handle and mobile power supply
By designing a telescopic handle on the power bank and using sliding and positioning components to extend and retract the handle, the problem of excessively large power banks in the prior art is solved, improving portability and ease of transportation.
Patent Information
- Application Number
- CN202423057593.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The fixed handle of existing power banks increases the overall size, making them inconvenient for storage and transportation.
The design features a telescopic handle, which extends and retracts through a sliding part and a positioning part on the housing. The positioning part engages to ensure stability.
It facilitates the handling and storage of portable power banks, reduces overall size, improves transportation convenience, and prevents handle wobbling.
Smart Images
Figure CN223638522U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mobile power supply technical field especially, relate to a kind of power supply shell and mobile power supply with telescopic handle. BACKGROUND
[0002] With the continuous progress of science and technology and the increasing dependence of people on electricity, the stability and convenience of power supply are crucial to people's life and work. However, whether due to natural disasters, human accidents or equipment failure, power outages occur from time to time, and people's pursuit of a convenient and efficient lifestyle requires the use of power supplies outdoors. In these circumstances, mobile power supplies not only meet the demand for power security, but also provide greater flexibility, convenience and efficiency.
[0003] With the increasing demand for energy storage of mobile power supplies, increasing the energy storage of mobile power supplies by increasing the number or weight of battery packs also results in a larger weight of the mobile power supply, making it difficult to transport the mobile power supply. In the prior art, to enhance the portability of the mobile power supply, the mobile power supply includes a housing and a battery pack disposed within the housing. The housing includes a shell and a handle fixedly disposed on the shell, and the mobile power supply is transferred by the handle. However, the fixedly disposed handle increases the overall size of the mobile power supply, making it difficult to store and transport the mobile power supply.
[0004] Therefore, the existing power supply shell needs to be further improved. SUMMARY
[0005] The utility model aims at providing a kind of power supply shell and mobile power supply with telescopic handle, not only facilitate the transport of mobile power supply, but also can reduce the overall size of mobile power supply, facilitate the storage and transportation of mobile power supply.
[0006] The utility model discloses the following technical solutions to achieve the purpose:
[0007] A power supply shell with a telescopic handle includes:
[0008] The shell has at least one side with a first sliding portion;
[0009] The handle has a grip portion and a support arm connected to the grip portion. The support arm has a second sliding portion that can move relative to the first sliding portion. The handle can be retracted towards the shell or extended away from the shell.
[0010] The shell is provided with a first positioning part and a second positioning part in the direction in which the handle moves, and the handle is provided with a third positioning part, the third positioning part is in clamping cooperation with the first positioning part when the handle is fully retracted in the shell, and the third positioning part is in clamping cooperation with the second positioning part when the handle is fully extended out of the shell.
[0011] Preferably, the shell has opposite bottom and top surfaces, the first positioning part is arranged close to the bottom surface of the shell, and the second positioning part is arranged between the first positioning part and the top surface.
[0012] The first positioning part and the second positioning part are both grooves, and the third positioning part is a protrusion; or,
[0013] The first positioning part and the second positioning part are both protrusions, and the third positioning part is a groove; or,
[0014] The first positioning part, the second positioning part, and the third positioning part are all protrusions.
[0015] Preferably, when the third positioning part is a protrusion, the third positioning part is elastic, and the deformation force of the third positioning part is greater than the weight of the handle.
[0016] Preferably, the shell has opposite first and second side surfaces, the first and second side surfaces are respectively provided with the first sliding part, the handle has first and second supporting arms arranged at both ends of the gripping part, and the first and second supporting arms are respectively provided with the second sliding part.
[0017] Preferably, the first sliding part is a sliding groove, and the second sliding part is a sliding block; or,
[0018] The first sliding part is a sliding block, and the second sliding part is a sliding groove.
[0019] Preferably, the sliding groove has a first recess and a second recess, and the sliding block has a first protrusion corresponding to the first recess and a second protrusion corresponding to the second recess.
[0020] Preferably, when the first sliding part is a sliding groove, the shell comprises a main body part and an upper shell, the first sliding part is arranged in the main body part, the first sliding part has an open end, and the upper shell is arranged in the main body part and used for locking the open end of the first sliding part.
[0021] Preferably, one side of the upper shell away from the main body part is provided with a avoiding part, and the avoiding part is arranged close to the middle position of the upper shell.
[0022] Preferably, the handle is a hollow structure, the handle has a handle body and a handle cover, the handle cover is arranged outside the handle body, and a plurality of reinforcing ribs are arranged on the handle body;
[0023] The handle cover and the handle body are connected through screw locking, screw plugs are arranged outside the screws at least at the gripping portion, and one end of the screw plug away from the screw is flush with the outer surface of the handle.
[0024] A mobile power supply comprises the power supply shell with the telescopic handle according to any one of the above and a battery pack and a control panel arranged in the power supply shell.
[0025] Compared with the prior art, the mobile power supply has at least the following beneficial effects:
[0026] The power supply shell with the telescopic handle and the mobile power supply have the following beneficial effects: the handle is arranged to be telescopic relative to the shell body, the handle can be pulled out during use, which facilitates the carrying of the mobile power supply, the handle can be retracted after use, which reduces the overall size of the mobile power supply and facilitates the storage and transportation of the mobile power supply, the third positioning portion is in clamping cooperation with the first and second positioning portions, the stability of the handle position is ensured, and the handle is prevented from shaking. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is a perspective structural schematic view of the handle of the mobile power supply of the embodiment of the utility model when being retracted.
[0028] Figure 2 is a perspective structural schematic view of the handle of the mobile power supply of the embodiment of the utility model when being pulled out.
[0029] Figure 3 is an exploded view of the power supply shell with the telescopic handle of the embodiment of the utility model.
[0030] Figure 4 is a planar structural schematic view of the mobile power supply of the embodiment of the utility model.
[0031] Figure 5 is a sectional view of the mobile power supply of the embodiment of the utility model along the A-A direction when the handle is retracted. Figure 4 is a sectional view of the mobile power supply of the embodiment of the utility model along the A-A direction when the handle is pulled out.
[0032] Figure 6 is an enlarged view of the local part at A. Figure 5
[0033] Figure 7 is a sectional view of the mobile power supply of the embodiment of the utility model along the A-A direction when the handle is pulled out. Figure 4 is a sectional view of the mobile power supply of the embodiment of the utility model along the A-A direction when the handle is pulled out.
[0034] Figure 8 is Figure 7 is a local enlarged view of B in FIG.
[0035] In the figure: 100, power shell; 1, shell; 11, main body part; 111, first sliding part; 1111, first recess; 1112, second recess; 1113, open end; 112, first positioning part; 113, second positioning part; 114, bottom surface; 115, top surface; 116, first side surface; 117, second side surface; 12, upper shell; 121, avoiding part; 2, handle; 21, holding part; 22, first supporting arm; 23, second supporting arm; 24, second sliding part; 241, first protruding part; 242, second protruding part; 25, third positioning part; 26, handle body; 261, reinforcing rib; 27, handle cover; 28, screw; 29, screw plug; 200, mobile power supply; 210, battery pack; 220, control board. DETAILED DESCRIPTION
[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and fully convey the inventive aspects of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will be omitted from descriptions of subsequent figures.
[0037] The words expressing position and direction described in the present application are explained by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.
[0038] Referring to Figures 1 to 8 The present application provides a mobile power supply 200, which comprises a power shell 100 with a telescopic handle 2 and a battery pack 210 and a control board 220 arranged on the power shell 100. The power shell 100 with the telescopic handle 2 can comprise a shell 1 and a handle 2, the handle 2 is mounted on the shell 1, and the handle 2 can be telescoped relative to the shell 1. That is, when in use, the handle 2 can be pulled out, which is convenient for users to hold, and after use, the handle 2 can be retracted, so that the overall volume of the power shell 100 can be reduced.
[0039] Specifically, referring to Figure 3The shell 1 can have four side surfaces connected in sequence and a bottom surface 114 and a top surface 115 arranged opposite to each other, and at least one side surface of the shell 1 is provided with the first sliding part 111. The shell 1 has a hollow structure and can have an accommodation space in which components such as the battery pack 210 and the control board 220 can be installed to form the mobile power supply 200.
[0040] With reference to Figure 3 The handle 2 can have a holding part 21 and an arm connected to the holding part 21, and the arm can be provided with a second sliding part 24 that can move relative to the first sliding part 111 to retract the handle 2 towards the shell 1 or extend the handle 2 away from the shell 1. That is, the handle 2 has a retracting function relative to the shell 1, for example, when the mobile power supply 200 needs to be carried, the handle 2 can be pulled out so that the handle 2 protrudes from the shell 1 to facilitate the user to hold the handle 2, and after use, the user can press the handle 2 back into the shell 1, so as to reduce the overall volume of the mobile power supply 200.
[0041] As a preferred mode, with reference to Figure 3 The handle 2 can have a hollow structure, so as to reduce the weight of the handle 2 and thus the weight of the mobile power supply 200, facilitating the carrying and transportation of the mobile power supply 200. The handle 2 can have a handle body 26 and a handle cover 27, and the handle cover 27 can be arranged on the outside of the handle body 26 or on the inside of the handle body 26. In this embodiment, the handle cover 27 is arranged on the outside of the handle body 26. The handle body 26 is provided with a plurality of reinforcing ribs 261 that can improve the structural strength of the handle body 26 and thus the structural strength of the handle 2, thereby improving the load capacity of the handle 2 and avoiding damage to the handle 2 during use, prolonging the service life of the handle 2.
[0042] The handle body 26 and the handle cover 27 can be fixedly connected by clamping, screw locking, bonding or the like. In the embodiment, the handle cover 27 and the handle body 26 can be locked and connected by the screw 28, which is preferably locked from the handle body 26 to the handle cover 27 side of the shell 1. In this way, the aesthetics of the handle 2 can be improved. At least the screw 28 outside the holding portion 21 is provided with a screw plug 29. The screw plug 29 not only prevents dust, dirt, moisture and the like from entering the screw hole, thereby protecting the screw 28 and the thread from damage, but also covers the screw hole, making the handle 2 look cleaner and more beautiful. The end of the screw plug 29 away from the screw 28 is preferably flush with the outer surface of the handle 2, making the surface of the handle 2 smoother, so that the user feels more comfortable when holding the handle 2, improving the user experience. The material of the screw plug 29 is preferably a flexible material, such as silicone or the like. The flexible screw plug 29 has a greater friction with the screw hole, preventing it from falling out of the screw hole, and the flexible screw plug 29 can also prevent the screw plug 29 from scratching the user.
[0043] The second sliding portion 24 can move along the length direction of the shell 1, the second sliding portion 24 can also move along the width direction of the shell 1, and the second sliding portion 24 can also move along the height direction of the shell 1. In the embodiment, the second sliding portion 24 can move along the height direction of the shell 1, that is, the second sliding portion 24 can move from the bottom surface 114 of the shell 1 to the top surface 115 of the shell 1, or the second sliding portion 24 can move from the top surface 115 of the shell 1 to the bottom surface 114 of the shell 1.
[0044] wherein, with reference to Figures 5 to 8 , the shell 1 can be provided with a first positioning portion 112 and a second positioning portion 113 in the direction in which the handle 2 moves, and the handle 2 can be provided with a third positioning portion 25, which is preferably arranged on the side of the support arm away from the holding portion 21. When the handle 2 is fully retracted into the shell 1, the third positioning portion 25 is clamped with the first positioning portion 112, so that the handle 2 cannot be randomly moved, for example, to avoid damage to the handle 2 protruding from the shell 1 during transportation. When the handle 2 is fully extended from the shell 1, the third positioning portion 25 is clamped with the second positioning portion 113 without the user applying an upward pulling force to the handle 2, so that the handle 2 cannot slide downward toward the shell 1, that is, the handle 2 cannot be retracted into the shell 1, ensuring that the user has enough operating space and avoiding the need for the user to frequently pull out the handle 2, making it more convenient for the user to use. The first positioning portion 112 and the second positioning portion 113 can be arranged on the side of the first sliding portion 111 facing the second sliding portion 24, so that the first positioning portion 112 and the second positioning portion 113 can cooperate with the third positioning portion 25.
[0045] As a preferred mode, referring to Figure 1 , Figure 2 , Figure 3 , the shell 1 can have opposite first side 116 and second side 117, the first side 116 and the second side 117 can be respectively provided with the first sliding part 111, that is, two first sliding parts 111 are provided on the shell 1. The handle 2 as a whole can be U-shaped, T-shaped, etc., in this embodiment, the handle 2 as a whole is U-shaped, the handle 2 has a first branch 22 and a second branch 23 provided at both ends of the holding part 21, and the first branch 22 and the second branch 23 can be respectively provided with a second sliding part 24, that is, two second sliding parts 24 are provided on the handle 2. That is, the second sliding part 24 on the first branch 22 and the second branch 23 can move relative to the first sliding part 111 on the first side 116 and the second side 117, so that the connection between the handle 2 and the shell 1 is more stable, and the second sliding part 24 moves more smoothly relative to the first sliding part 111.
[0046] In this application, by setting the handle 2 to be able to stretch relative to the shell 1, the handle 2 can be pulled out during use, so that the carrying of the mobile power supply 200 is facilitated, and the handle 2 can be retracted after use, so that the overall volume of the mobile power supply 200 can be reduced, and the storage and transportation of the mobile power supply 200 are facilitated. And through the third positioning part 25 and the first positioning part 112 and the second positioning part 113, the stability of the position of the handle 2 can be ensured, and the handle 2 can be prevented from shaking.
[0047] In a specific embodiment, referring to Figures 5 to 8 , the first positioning part 112 can be arranged close to the bottom surface 114 of the shell 1, and the second positioning part 113 can be arranged between the first positioning part 112 and the top surface 115. The distance between the first positioning part 112 and the second positioning part 113 determines the moving distance of the handle 2 in the height direction of the shell 1, the farther the distance between the first positioning part 112 and the second positioning part 113, the longer the moving distance of the handle 2 in the height direction of the shell 1, and the shorter the distance between the first positioning part 112 and the second positioning part 113, the shorter the moving distance of the handle 2 in the height direction of the shell 1.
[0048] The first positioning part 112 and the second positioning part 113 can both be groove structures, and the third positioning part 25 can be a protruding block structure, the groove structure and the protruding block structure can be clamped and matched to realize the positioning between the handle 2 and the shell 1.
[0049] The first positioning part 112 and the second positioning part 113 can both be protruding block structures, and the third positioning part 25 can be a groove structure, the groove structure and the protruding block structure can be clamped and matched to realize the positioning between the handle 2 and the shell 1.
[0050] The first positioning part 112, the second positioning part 113 and the third positioning part 25 can all be in a protruding structure, the first positioning part 112 and the second positioning part 113 can protrude from the surface of the first sliding part 111 and form a groove structure, the third positioning part 25 can protrude from the surface of the supporting arm and form a groove structure, the groove structure and the protruding structure can be in a clamping fit, realizing the positioning between the handle 2 and the shell 1.
[0051] As a preferred mode, when the third positioning part 25 is in a protruding structure, the third positioning part 25 can have elasticity, that is, when the third positioning part 25 is subjected to an external force, the third positioning part 25 will be elastically deformed, so that the third positioning part 25 can be in a clamping fit with the first positioning part 112 or the second positioning part 113, or so that the third positioning part 25 can be separated from the first positioning part 112 or the second positioning part 113. As an example, when the first positioning part 112 and the second positioning part 113 are both in a groove structure, and the third positioning part 25 is in a clamping fit with the first positioning part 112 or the second positioning part 113, at this time an upward pulling force or a downward pushing force is applied to the handle 2, the third positioning part 25 is elastically deformed, and the third positioning part 25 is separated from the first positioning part 112 or the second positioning part 113. When the first positioning part 112 and the second positioning part 113 are both in a protruding structure, and the third positioning part 25 is not in a clamping fit with the first positioning part 112 and the second positioning part 113, at this time an upward pulling force or a downward pushing force is applied to the handle 2, the third positioning part 25 abuts against the first positioning part 112 or the second positioning part 113 and is elastically deformed, and the third positioning part 25 is in a clamping fit with the first positioning part 112 or the second positioning part 113.
[0052] The deformation force of the third positioning part 25 is preferably greater than the weight of the handle 2, when the handle 2 is fully extended out of the shell 1, at this time the third positioning part 25 is in a clamping fit with the second positioning part, at this time if the user releases the handle 2, that is, the user's hand does not contact the handle 2, the gravity of the handle 2 will exert a downward force on the third positioning part 25 and cause the third positioning part 25 to be elastically deformed, since the deformation force of the third positioning part 25 is greater than the gravity of the handle 2, that is, the elastic deformation of the third positioning part 25 caused by the gravity of the handle 2 is not enough to cause the third positioning part 25 to be separated from the second positioning part 113, it can prevent the handle 2 from sliding downward towards the shell 1, that is, it can prevent the handle 2 from retracting into the shell 1, ensuring that the user has sufficient operating space, which can avoid the user needing to frequently pull out the handle 2, making it more convenient for the user to use.
[0053] In some embodiments, when the first positioning part 112 and the second positioning part 113 are both in a protruding structure, the first positioning part 112 and the second positioning part 113 can also have elasticity. The deformation force of the first positioning part 112 and the second positioning part 113 is also preferably greater than the weight of the handle 2.
[0054] In an embodiment, the first sliding part 111 can be a sliding groove and the second sliding part 24 can be a sliding block, or the first sliding part 111 can be a sliding block and the second sliding part 24 can be a sliding groove. In the embodiment, the first sliding part 111 is a sliding groove and the second sliding part 24 is a sliding block. The sliding groove and the sliding block can be connected in a sliding manner, not only to connect the handle 2 and the shell 1, but also to move the handle 2 relative to the shell 1, so that the handle 2 is retracted towards the shell 1 or extended away from the shell 1.
[0055] As a preferred mode, referring to Figure 3 , the sliding groove can have a first recess 1111 and a second recess 1112, and the sliding block can have a first protrusion 241 corresponding to the first recess 1111 and a second protrusion 242 corresponding to the second recess 1112, i.e. the first protrusion 241 is connected to the first recess 1111 in a sliding manner, and the second protrusion 242 is connected to the second recess 1112 in a sliding manner. In this way, not only can the contact surface between the sliding groove and the sliding block be increased, making the sliding between the sliding groove and the sliding block smoother and more stable, but also has a guiding effect, facilitating the alignment and installation between the sliding groove and the sliding block. Of course, in some embodiments, the sliding groove can also have more than two recesses, and the sliding block can correspondingly have more than two protrusions.
[0056] When the first sliding part 111 is a sliding groove, the shell 1 can include a main body 11 and an upper shell 12, the first sliding part 111 can be arranged on the main body 11, the first sliding part 111 has an open end 1113, the open end 1113 can be arranged at one end of the first sliding part 111 close to the top surface 115, and the upper shell 12 can be arranged on the main body 11 and used to lock the open end 1113 of the first sliding part 111, i.e. the upper shell 12 and the main body 11 together form a closed first sliding part 111. When the handle 2 is fully extended out of the shell 1, the second sliding part 24 abuts against the upper shell 12, the upper shell 12 prevents the handle 2 from continuing to slide upward, and ensures that the user pulls up the portable power source 200 through the handle 2. The main body 11 and the upper shell 12 can be fixedly connected by clamping, screw locking, bonding, etc.
[0057] Referring to Figure 1 , Figure 2 , Figure 3 , the side of the upper shell 12 away from the main body 11 can be provided with a relief portion 121, which is preferably arranged close to the middle position of the upper shell 12. The relief portion 121 has a large space, which is convenient for the user to hold the handle 2 or for other components to be connected to the handle 2.
[0058] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model, and all these changes should belong to the protection scope of the utility model claim.
Claims
1. A power supply housing having a telescoping handle, characterized by, The power supply shell comprises: a shell, at least one side of the shell is provided with a first sliding part; a handle, the handle has a holding part and a supporting arm connected with the holding part, the supporting arm is provided with a second sliding part, the second sliding part can move relative to the first sliding part to make the handle retract towards the shell or extend away from the shell; wherein the shell is provided with a first positioning part and a second positioning part in the direction of the handle movement, the handle is provided with a third positioning part, when the handle is fully retracted in the shell, the third positioning part is in clamping cooperation with the first positioning part, when the handle is fully extended out of the shell, the third positioning part is in clamping cooperation with the second positioning part.
2. The power supply housing with a telescopic handle according to claim 1, characterized in that, The shell has opposite bottom surface and top surface, the first positioning part is arranged close to the bottom surface of the shell, and the second positioning part is arranged between the first positioning part and the top surface; The first positioning part and the second positioning part are both grooves, and the third positioning part is a protrusion; or The first positioning part and the second positioning part are both protrusions, and the third positioning part is a groove; or The first positioning part, the second positioning part and the third positioning part are all protrusions.
3. The power supply housing with a telescopic handle according to claim 2, characterized in that, When the third positioning part is a protrusion, the third positioning part has elasticity, and the deformation force of the third positioning part is greater than the weight of the handle.
4. The power supply housing with a telescopic handle according to claim 1, characterized in that, The shell has opposite first side and second side, the first side and the second side are respectively provided with the first sliding part, the handle has first supporting arm and second supporting arm arranged at both ends of the holding part, and the first supporting arm and the second supporting arm are respectively provided with the second sliding part.
5. The power supply housing with a telescopic handle according to claim 1, wherein, The first sliding part is a sliding groove, and the second sliding part is a sliding block; or The first sliding part is a sliding block, and the second sliding part is a sliding groove.
6. The power supply housing with a telescopic handle according to claim 5, characterized in that, The sliding groove has a first recess and a second recess, the sliding block has a first protrusion corresponding to the first recess and a second protrusion corresponding to the second recess.
7. The power supply housing with a telescopic handle according to claim 5, characterized in that, When the first sliding part is a sliding groove, the shell comprises a main body and an upper shell, the first sliding part is arranged on the main body, the first sliding part has an opening end, and the upper shell is arranged on the main body and used for locking the opening end of the first sliding part.
8. The power supply housing with a telescopic handle according to claim 7, characterized in that, The upper shell is provided with a avoiding part on the side away from the main body, and the avoiding part is arranged close to the middle position of the upper shell.
9. The power supply housing with a telescopic handle according to claim 1, wherein, The handle is a hollow structure, the handle has a handle body and a handle cover, the handle cover is arranged on the outside of the handle body, and a plurality of reinforcing ribs are arranged on the handle body; The handle cover and the handle body are locked and connected through screws, at least the outside of the screws located at the holding part is provided with a screw plug, and one end of the screw plug away from the screw is flush with the outer surface of the handle.
10. A mobile power source, characterized by, The power supply shell comprises: a shell, at least one side of the shell is provided with a first sliding part; a handle, the handle has a holding part and a supporting arm connected with the holding part, the supporting arm is provided with a second sliding part, the second sliding part can move relative to the first sliding part to make the handle retract towards the shell or extend away from the shell; wherein the shell is provided with a first positioning part and a second positioning part in the direction of the handle movement, the handle is provided with a third positioning part, when the handle is fully retracted in the shell, the third positioning part is in clamping cooperation with the first positioning part, when the handle is fully extended out of the shell, the third positioning part is in clamping cooperation with the second positioning part. The shell has opposite bottom surface and top surface, the first positioning part is arranged close to the bottom surface of the shell, and the second positioning part is arranged between the first positioning part and the top surface; The first positioning part and the second positioning part are both grooves, and the third positioning part is a protrusion; or The first positioning part and the second positioning part are both protrusions, and the third positioning part is a groove; or The first positioning part, the second positioning part and the third positioning part are all protrusions. When the third positioning part is a protrusion, the third positioning part has elasticity, and the deformation force of the third positioning part is greater than the weight of the handle. The shell has opposite first side and second side, the first side and the second side are respectively provided with the first sliding part, the handle has first supporting arm and second supporting arm arranged at both ends of the holding part, and the first supporting arm and the second supporting arm are respectively provided with the second sliding part. The first sliding part is a sliding groove, and the second sliding part is a sliding block; or The first sliding part is a sliding block, and the second sliding part is a sliding groove. The sliding groove has a first recess and a second recess, the sliding block has a first protrusion corresponding to the first recess and a second protrusion corresponding to the second recess. When the first sliding part is a sliding groove, the shell comprises a main body and an upper shell, the first sliding part is arranged on the main body, the first sliding part has an opening end, and the upper shell is arranged on the main body and used for locking the opening end of the first sliding part. The upper shell is provided with a avoiding part on the side away from the main body, and the avoiding part is arranged close to the middle position of the upper shell. The handle is a hollow structure, the handle has a handle body and a handle cover, the handle cover is arranged on the outside of the handle body, and a plurality of reinforcing ribs are arranged on the handle body; The handle cover and the handle body are locked and connected through screws, at least the outside of the screws located at the holding part is provided with a screw plug, and one end of the screw plug away from the screw is flush with the outer surface of the handle.