Charger

Abstract

The utility model relates to a charger which comprises a shell, an interface seat connected to the shell and a circuit board installed in the shell, and the interface seat is configured to be matched with a plugging port of a battery pack. The shell is provided with a first shell, a second shell connected to the first shell and a sliding rail structure formed on the first shell or the second shell. The sliding rail structure is configured to be matched with a sliding groove of the battery pack, and the sliding rail structure is located on the side wall of the shell. The charger further comprises a reinforcing piece connected to the sliding rail structure, at least part of the reinforcing piece is embedded into the first shell or the second shell, and the reinforcing piece abuts against the sliding groove of the battery pack. According to the charger provided by the invention, the strength of the sliding rail structure can be ensured while the cost is saved and the manufacturing is convenient.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of charging equipment, in particular to a charger. BACKGROUND

[0002] With the continuous enrichment of the types of electric tools, more and more electric tools begin to be equipped with independent battery packs. The battery pack can be charged and discharged in a cycle, which can provide a stable power source for the use of the electric tool. The battery pack is usually charged by a charger so as to supplement the electric energy in time when the electric quantity is low. The charger has an interface structure and can be paired with the interface of the battery pack, thereby inputting electric energy to the battery pack.

[0003] Meanwhile, the charger can fix the battery pack through the battery pack fixing structure, so as to ensure the reliable contact between the interfaces during the charging of the battery pack. The existing charger usually sets a sliding track structure, which limits the freedom degree of the battery pack in the direction of pulling out when the battery pack is inserted, thereby fixing the battery pack. For the charger with a complete shell forming surface, a multi-section semi-enclosed sliding track structure can be formed. Such a design has high strength and does not need to worry about being damaged by falling or being damaged by repeatedly inserting and pulling out, but only the plastic part is worn out by repeated insertion and pulling out.

[0004] However, for the charger with an upper and lower cover structure, some existing products set the battery pack fixing structure on the interface seat. This will result in low strength of the battery pack fixing structure, which has the risk of being damaged by falling or being broken by repeated insertion and pulling out. Moreover, the interface seat material is relatively expensive, and the manufacturing process is relatively complex. The design of the battery pack fixing structure on the interface seat will make the interface seat larger, thereby affecting the production efficiency. Some products set the battery pack fixing structure on the top cover of the shell. In this way, the sliding track structure for fixing the battery pack becomes a single rib, which has lower strength and is easy to be damaged by falling or impact. Therefore, the sliding track structure of the charger is a weak part, which has a high risk of damage such as fracture or deformation. Therefore, how to save costs and facilitate manufacturing while ensuring the strength of the sliding track structure is an important problem. Practical new type content

[0005] The embodiment of the present application aims to provide a charger which can facilitate saving costs and facilitating manufacturing while ensuring the strength of the sliding track structure.

[0006] To solve the above technical problems, embodiments of the present application provide a charger. The charger comprises a housing, an interface seat connected to the housing, and a circuit board installed in the housing, the interface seat being configured to be adapted to a plug-in port of a battery pack. The housing has a first housing, a second housing connected to the first housing, and a slide rail structure formed on the first housing or the second housing. The slide rail structure is configured to be adapted to a slide groove of the battery pack, and the slide rail structure is located on a side wall of the housing. The charger further comprises a reinforcing member connected to the slide rail structure, at least part of the reinforcing member being embedded in the interior of the first housing or the second housing, and the reinforcing member abutting against the slide groove of the battery pack.

[0007] The charger provided by the embodiments of the present application embeds the reinforcing member at the slide rail structure of the housing for structural reinforcement. That is, the reinforcing member is connected in the slide rail structure arranged on the side wall of the housing. The slide rail structure in a single and thin form is combined with the reinforcing member without changing the form of the slide rail structure. The reinforcing member is made of a material with higher strength than the housing, which can effectively improve the strength of the slide rail at different positions. Thus, the strength of the slide rail structure is ensured while the cost is saved and the manufacturing is facilitated.

[0008] In some embodiments, the slide rail structure comprises a first slide rail and a second slide rail protruding from the first housing, the first slide rail and the second slide rail being oppositely arranged; and the reinforcing member is embedded in the first slide rail, the first housing, and the second slide rail. In this way, the connection strength of the slide rail structure and the housing at the combined position can be enhanced by embedding part of the reinforcing member in the interior of the housing, and the slide rail structure can be prevented from being easily broken.

[0009] In some embodiments, the reinforcing member has a first reinforcing member and a second reinforcing member, the first reinforcing member being accommodated in the interior of the first slide rail and the first housing, and the second reinforcing member being accommodated in the interior of the second slide rail and the first housing. In this way, different reinforcing members can be arranged to respectively play a structural reinforcement role for different slide rails.

[0010] In some embodiments, the reinforcing member has a first reinforcing portion and a second reinforcing portion connected to the first reinforcing portion, the first reinforcing portion being accommodated in the interior of the first slide rail and the first housing, and the second reinforcing portion being accommodated in the interior of the second slide rail and the first housing. In this way, different portions of the reinforcing member can be arranged to respectively play a structural reinforcement role for different slide rails.

[0011] In some embodiments, the first slide rail comprises a first guide portion and a first limiting portion connected to each other, the first guide portion being protrudingly arranged on the surface of the housing, and the first limiting portion extending from the side of the first guide portion away from the housing and being arranged towards the second slide rail. In this way, the first guide portion can be arranged in the first slide rail to play a guiding role, and the first limiting portion can be arranged to play a limiting role.

[0012] In some embodiments, the first reinforcing member includes a first body portion received in the first sliding rail and a first extension portion bent from an edge of the first body portion, and the first body portion and the first extension portion are embedded in the first guide portion. In this way, the first guide portion with weak strength can be structurally reinforced by the bent first reinforcing member.

[0013] In some embodiments, the first reinforcing member further includes a first protrusion portion arranged opposite to the first body portion, the first protrusion portion is connected to the first extension portion away from the edge of the first body portion, and the first protrusion portion is embedded in the first guide portion. In this way, the first protrusion portion provided in the first reinforcing member can improve the bonding strength between the first reinforcing member and the first sliding rail.

[0014] In some embodiments, the second sliding rail includes a second guide portion and a second limiting portion connected to each other, the second guide portion is protrudingly arranged on the surface of the housing, and the second limiting portion extends from a side of the second guide portion away from the housing and towards the first sliding rail. In this way, the second guide portion can be provided in the second sliding rail to play a guiding role, and the second limiting portion can be provided to play a limiting role.

[0015] In some embodiments, the second reinforcing member includes a second body portion received in the second sliding rail and a second extension portion bent from an edge of the second body portion, and the second body portion and the second extension portion are embedded in the second guide portion. In this way, the second guide portion with weak strength can be structurally reinforced by the bent second reinforcing member.

[0016] In some embodiments, the reinforcing member is provided with a through hole located at a portion of the reinforcing member received in the sliding rail structure. In this way, the through hole can provide a filling space for insert injection molding to ensure the bonding strength between different materials. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are illustrated by way of example in the figures that form a part of this disclosure and which do not limit the scope of embodiments, in which like references indicate similar elements. The drawings in the figures are not to scale and are provided for purposes of explanation only.

[0018] Figure 1 is a perspective structural schematic view of a charger provided by some embodiments of the present application;

[0019] Figure 2 is a perspective structural schematic view of a charger provided by some embodiments of the present application from another perspective;

[0020] Figure 3 is Figure 2 is an enlarged structural schematic view of A in FIG. 4;

[0021] Figure 4Figure 1 is a schematic diagram of a cooperation structure between a circuit board and an interface seat in a charger according to some embodiments of the present application;

[0022] Figure 5 Figure 2 is a schematic diagram of an arrangement structure of a first reinforcing member and a second reinforcing member in a charger according to some embodiments of the present application;

[0023] Figure 6 Figure 3 is a schematic diagram of a top view of an arrangement structure of a first reinforcing member and a second reinforcing member in a charger according to some embodiments of the present application;

[0024] Figure 7 Figure 4 is a schematic diagram of a perspective view of a first reinforcing member in a charger according to some embodiments of the present application

[0025] Figure 8 Figure 5 is a schematic diagram of a structure of a battery pack connected to a charger according to some embodiments of the present application;

[0026] Figure 9 Figure 6 is a schematic diagram of a structure of a charger connected with a battery pack according to some embodiments of the present application;

[0027] Figure 10 Figure 7 is a schematic diagram of a structure of a charger connected with a plurality of battery packs according to some embodiments of the present application. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that in the embodiments of the present application, many technical details are proposed in order to make the readers better understand the present application. However, the technical scheme claimed by the present application can be realized even without these technical details and various changes and modifications based on the following embodiments. The division of the following embodiments is for the purpose of description, and should not constitute any limitation on the specific embodiments of the present application, and the embodiments can be combined with each other and cited to each other without contradiction.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the description and the claims of this application and the above description of drawings, the terms "comprising" and "having" and any variations thereof, are intended to cover not exclusively inclusive.

[0030] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connection" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0031] As shown in Figures 1 to 10 Some embodiments of the present application provide a charger including a housing 11, an interface seat 12 connected to the housing 11, and a circuit board 14 mounted in the housing 11, the interface seat 12 is configured to be adapted to the plug-in port of the battery pack 21. The housing 11 has a first housing 111, a second housing 112 connected to the first housing 111, and a slide rail structure 13 formed on the first housing 111 or the second housing 112. The housing 11 is the packaging shell of the charger, which can be used for mounting other components, and plays a protective role for the important components mounted. The housing 11 can adopt a split structure convenient for disassembly, for example, the cooperation form of a bottom shell and a top cover, and the bottom shell and the top cover can be connected by fasteners. The bottom shell can form a mounting space, and the top cover can cover the opening of the bottom shell. At the same time, the interface seat 12 is provided on the housing 11 for mounting the conductive terminal 121. In order to cooperate with the charge-discharge interface 23 of the battery pack 21 through the interface seat 12, the battery pack 21 is charged. The interface seat 12 can be multiple, for example, one, two, three, six or eight, so as to Figure 9 and Figure 10 As shown, one or more different battery packs 21 are charged respectively. The plurality of interface seats 12 can be symmetrically distributed. The housing 11 is provided with corresponding slide rail structures 13 at the positions of the interface seats 12 for mounting the battery pack 21.

[0032] The circuit board 14 is the part of the charger for charging control. The circuit board 14 is designed with circuits and electronic components for controlling the charging process. The circuit board 14 can input the external power introduced by the charger through the plug 101 part into the battery pack 21 with appropriate voltage and current.

[0033] The slide rail structure 13 is configured to be fitted with the slide groove 22 of the battery pack 21, and the slide rail structure 13 is located on the side wall of the shell 11. The charger further comprises a reinforcing member connected to the slide rail structure 13, and at least part of the reinforcing member is embedded in the interior of the first shell 111 or the second shell 112. Moreover, the reinforcing member abuts against the slide groove 22 of the battery pack 21. The surface of the reinforcing member can be flush with the side of the slide rail structure 13 facing the battery pack 21. That is, part of the surface of the reinforcing member is exposed on the side of the slide rail structure 13 facing the battery pack 21. When the battery pack 21 is inserted into the slide rail structure 13 and is in contact with the slide rail, it can be in contact with part of the surface of the reinforcing member. That is, at least part of the reinforcing member abuts against the slide groove 22 of the battery pack 21, and by exposing the surface of the reinforcing member that is in contact when the battery pack 21 is inserted, instead of the plastic part of the slide rail structure 13 being in contact with the entire battery pack 21, the phenomenon of wear or deformation of the plastic part caused by frequent friction can be prevented. Thus, the wear phenomenon of the slide rail structure 13 when the battery pack 21 is inserted and removed multiple times can be reduced.

[0034] The charger provided by the embodiments of the present application embeds a reinforcing member in the slide rail structure 13 of the shell 11 for structural reinforcement. That is, the reinforcing member is connected in the slide rail structure 13 provided on the side wall of the shell 11. The slide rail structure 13 is not changed in form, and the thin slide rail in the slide rail structure 13 is combined with the reinforcing member. The reinforcing member is made of a material having a higher strength than the shell 11, and can effectively improve the strength of the slide rail at different positions. Thus, while saving costs and facilitating manufacturing, the strength of the slide rail structure 13 is ensured, so that the charger can be adapted to the scenario of charging multiple battery packs and improve the load capacity.

[0035] As shown in Figures 1 to 3 The slide rail structure 13 comprises a first slide rail 131 and a second slide rail 132 protruding from the first shell 111, and the first slide rail 131 and the second slide rail 132 are oppositely arranged. The first slide rail 131 and the second slide rail 132 of the slide rail structure 13 can be positioned and guided from both sides of the battery pack 21 to enable the battery pack 21 to be stably fitted with the interface seat 12. In order to save costs and facilitate manufacturing, the slide rail structure 13 can be arranged on the side wall of the top cover. The reinforcing member is embedded in the first slide rail 131, the first shell 111 and the second slide rail 132 to reinforce the structure between the slide rail structure 13 and the first shell 111, so that the connection strength between different slide rails and the shell 11 is improved. The reinforcing member can be implemented by different components or by the same component.

[0036] As shown in Figure 5 and Figure 6The reinforcing member has a first reinforcing member 15 and a second reinforcing member 16. The first reinforcing member 15 and the second reinforcing member 16 reinforce the strength of different parts of the slide rail structure 13. The first reinforcing member 15 is accommodated in the interior of the first slide rail 131 and the first housing 11, and the second reinforcing member 16 is accommodated in the interior of the second slide rail 132 and the first housing 11. The strength of the first reinforcing member 15 and the second reinforcing member 16 is greater than the strength of the housing 11. After the slide rail structure 13 is embedded in the reinforcing member, the stress of the slide rail structure 13 can be improved. The first reinforcing member 15 and the second reinforcing member 16 can have the same thickness or different thicknesses according to actual conditions. By embedding the metal insert, the strength of the weak part of the charger slide rail is increased, and the slide rail is prevented from being broken or deformed due to impact such as falling of the charger. In actual conditions, by embedding at least part of the first reinforcing member 15 and at least part of the second reinforcing member 16 in the interior of the material of the housing 11, the connection strength of the slide rail structure 13 and the side wall of the housing 11 at the joint is strengthened, a firm connection structure is formed between the slide rail structure 13 and the side wall of the housing 11, and the overall rupture of the slide rail structure 13 is prevented.

[0037] Specifically, at least part of the first reinforcing member 15 and at least part of the second reinforcing member 16 are embedded in the interior of the housing 11 and extend into the side wall of the housing 11. Further, the first reinforcing member 15 is arranged on both sides of the first slide rail 131, and the first reinforcing member 15 can have one or more parts integrated with the material of the side wall of the housing 11. The first reinforcing member 15 can also be provided as one or more. The second reinforcing member 16 is arranged on both sides of the second slide rail 132, and the second reinforcing member 16 can have one or more parts integrated with the material of the side wall of the housing 11. The second reinforcing member 16 can also be provided as one or more. By forming a firm joint area between the reinforcing member and the material of the side wall of the housing 11, the connection strength between the slide rail structure 13 and the side wall of the housing 11 can be improved. At the same time, different reinforcing members can be arranged in a curved shape in the side wall of the housing 11 to strengthen the connection strength.

[0038] In addition, the reinforcing member can also have a first reinforcing part and a second reinforcing part connected to the first reinforcing part, the first reinforcing part being accommodated in the interior of the first slide rail 131 and the first housing 111, and the second reinforcing part being accommodated in the interior of the second slide rail 132 and the first housing 111. That is, different parts of the reinforcing member are embedded in different parts of the slide rail structure 13, which can effectively connect different parts of the slide rail structure 13 to form a whole.

[0039] As Figure 3As shown, the first sliding rail 131 can include a first guide portion 1311 and a first limiting portion 1321 connected with each other. The first guide portion 1311 is protrudingly arranged on the surface of the shell 11, and the first limiting portion 1321 is arranged to extend from the side of the first guide portion 1311 away from the shell 11 to the second sliding rail 132. The first guide portion 1311 is the part of the first sliding rail 131 connected with the shell 11, and can guide the side surface of the battery pack 21 when the battery pack 21 is inserted into or pulled out of the sliding rail structure 13. Thus, the difficulty of inserting or pulling out the battery pack 21 is reduced. The first limiting portion 1321 is located on the side of the first guide portion 1311 away from the shell 11. In addition, the first limiting portion 1321 has a part closer to the second sliding rail 132 than the first guide portion 1311, so as to limit the fitting position of the battery pack 21.

[0040] In the embodiment, the first reinforcing member 15 can include a first body portion 151 accommodated in the first sliding rail 131, and a first extension portion 152 bent and extended from the edge of the first body portion 151. The first body portion 151 and the first extension portion 152 are both embedded in the first guide portion 1311. The first body portion 151 and the first extension portion 152 are parts of the first reinforcing member 15 located at different positions. The first body portion 151 and the first extension portion 152 are arranged corresponding to the first guide portion 1311 of the first sliding rail 131, so as to play a structural reinforcing role on the relatively weak first guide portion 1311 of the first sliding rail 131. At the same time, the first extension portion 152 and the first body portion 151 present a bent shape, so as to ensure the bonding strength between the first reinforcing member 15 and the first sliding rail 131. Thus, the structural strength of the first sliding rail 131 is effectively improved.

[0041] As shown in Figure 5 and Figure 6 The first reinforcing member 15 can further include a first protruding portion 153 arranged opposite to the first body portion 151. The first protruding portion 153 is connected with the edge of the first extension portion 152 away from the first body portion 151, and is embedded in the first guide portion 1311. The first protruding portion 153 is located at the tail of the first extension portion 152 away from the first body portion 151, so as to increase the bonding area of the first reinforcing member 15 and the first sliding rail 131, and thus ensure the bonding strength between the first reinforcing member 15 and the first sliding rail 131. At the same time, the first protruding portion 153 is bent and extended from the edge of the first extension portion 152, so as to improve the bonding strength of the first reinforcing member 15 and the first sliding rail 131 at different directions and different positions.

[0042] As shown in Figure 3As shown, the second slide rail 132 can include a second guide portion 1321 and a second limiting portion 1322 connected with each other. The second guide portion 1321 is protruded on the surface of the shell 11, and the second limiting portion 1322 is arranged to extend from the side of the second guide portion 1321 away from the shell 11 to the first slide rail 131. The second guide portion 1321 is the part of the second slide rail 132 connected with the shell 11, and can guide the side surface of the battery pack 21 when the battery pack 21 is inserted into or pulled out of the slide rail structure 13. Thus, the difficulty of inserting or pulling out the battery pack 21 is reduced. The second limiting portion 1322 is located on the side of the second guide portion 1321 away from the shell 11. In addition, the second limiting portion 1322 has a part closer to the first slide rail 131 than the second guide portion 1321, so as to limit the fitting position of the battery pack 21.

[0043] In the embodiment, the second reinforcing member 16 can include a second main body portion 161 accommodated in the second slide rail 132 and a second extension portion 162 bent and extended from the edge of the second main body portion 161. The second main body portion 161 and the second extension portion 162 are both embedded in the second guide portion 1321. The second main body portion 161 and the second extension portion 162 are parts of the second reinforcing member 16 located at different positions. The second main body portion 161 and the second extension portion 162 are arranged corresponding to the second guide portion 1321 of the second slide rail 132, so as to play a structural reinforcing role on the relatively weak second guide portion 1321 of the second slide rail 132. At the same time, the second extension portion 162 and the second main body portion 161 present a bent shape, so as to ensure the bonding strength between the second reinforcing member 16 and the second slide rail 132. Thus, the structural strength of the second slide rail 132 is effectively improved.

[0044] In addition, the second reinforcing member 16 can further include a second protruding portion 163 arranged opposite to the second main body portion 161. The second protruding portion 163 is connected with the edge of the second extension portion 162 away from the second main body portion 161, and is embedded in the second guide portion 1321. The second protruding portion 163 is located at the tail of the second extension portion 162 away from the second main body portion 161, so as to increase the bonding area between the second reinforcing member 16 and the second slide rail 132, and thus ensure the bonding strength between the second reinforcing member 16 and the second slide rail 132. At the same time, the second protruding portion 163 is bent and extended from the edge of the second extension portion 162, so as to improve the bonding strength between the second reinforcing member 16 and the second slide rail 132 at different directions and different positions.

[0045] In the embodiment, the first reinforcing member 15 and the second reinforcing member 16 can be provided with through holes 17, which can be arranged at the portions of the reinforcing members accommodated in the slide rail structure 13. The through holes 17 can provide a filling space when different materials are combined, thereby increasing the contact area between the insert and the slide rail, making the combination of the insert and the slide rail portion more solid and increasing the structural strength. Moreover, the through holes 17 can facilitate the positioning of the insert on the mold. As shown in Figure 7 For example, the first reinforcing member 15 can be provided with through holes 17 on the first body portion 151 and the first extension portion 152, and the number of through holes 17 can be four, Figure 7 for example. In this way, the filling space of the injection molding material can be provided at the positions of the first body portion 151 and the second extension portion 152, respectively, to ensure the bonding strength between the first reinforcing member 15 and the first slide rail 131.

[0046] In actual cases, the first reinforcing member 15 and the second reinforcing member 16 are made of metal materials. The metal insert can adopt a special bending structure to increase the contact area between the insert and the slide rail, making the combination of the metal insert and the plastic portion of the slide rail more solid and increasing the structural strength, thereby avoiding the separation of the insert and the breakage of the slide groove during the use of the charger. The metal insert can be completely exposed to the air, and the insert can be first placed in the positioning hole on the mold and integrally injection molded with the entire plastic part. The several holes and exposed portions on the metal insert can be used for the positioning of the insert in the mold. The bending of the tail portion of the metal insert can make the insert fully contact with the plastic part.

[0047] Those skilled in the art can understand that the above embodiments are specific examples for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A charger comprising a housing, an interface socket coupled to the housing, and a circuit board mounted within the housing, the interface socket configured to mate with a plug-in port of a battery pack; characterized in that: The shell has a first shell, a second shell connected to the first shell, and a slide rail structure formed on the first shell or the second shell, the slide rail structure is configured to be adapted with the slide groove of the battery pack, the slide rail structure is located on the side wall of the shell, the charger further comprises a reinforcing member connected to the slide rail structure, at least part of the reinforcing member is embedded in the interior of the first shell or the second shell, and the reinforcing member abuts against the slide groove of the battery pack.

2. The charger according to claim 1, wherein: The slide rail structure comprises a first slide rail and a second slide rail protruding from the first shell, and the first slide rail and the second slide rail are oppositely arranged; the reinforcing member is embedded in the first slide rail, the first shell and the second slide rail.

3. The charger according to claim 2, wherein: The reinforcing member has a first reinforcing member and a second reinforcing member, the first reinforcing member is accommodated in the interior of the first slide rail and the first shell, and the second reinforcing member is accommodated in the interior of the second slide rail and the first shell.

4. The charger according to claim 2, wherein: The reinforcing member has a first reinforcing part and a second reinforcing part connected to the first reinforcing part, the first reinforcing part is accommodated in the interior of the first slide rail and the first shell, and the second reinforcing part is accommodated in the interior of the second slide rail and the first shell.

5. The charger according to claim 3, wherein: The first slide rail comprises a first guide part and a first limiting part connected to each other, the first guide part is protrudingly arranged on the surface of the shell, and the first limiting part extends from the side of the first guide part away from the shell to the second slide rail.

6. The charger according to claim 5, wherein: The first reinforcing member comprises a first main body part accommodated in the first slide rail and a first extension part bent and extending from the edge of the first main body part, and the first main body part and the first extension part are embedded in the first guide part.

7. The charger of claim 6, wherein including: The first reinforcing member further comprises a first protruding part oppositely arranged with the first main body part, the first protruding part is connected with the edge of the first extension part away from the first main body part, and the first protruding part is embedded in the first guide part.

8. The charger according to claim 3, wherein: The second slide rail comprises a second guide part and a second limiting part connected to each other, the second guide part is protrudingly arranged on the surface of the shell, and the second limiting part extends from the side of the second guide part away from the shell to the first slide rail.

9. The charger according to claim 8, wherein: The second reinforcing member comprises a second main body part accommodated in the second slide rail and a second extension part bent and extending from the edge of the second main body part, and the second main body part and the second extension part are embedded in the second guide part.

10. The charger according to claim 6, wherein: The reinforcing member is provided with a through hole penetrating through the first main body part, and the through hole is located at the part of the reinforcing member accommodated in the slide rail structure.

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