Charging accessories, power banks, core extraction mechanisms and production molds

Abstract

This utility model discloses a charging accessory, a power bank, a core-pulling mechanism, and a production mold. The charging accessory includes a limiting inner surface and a limiting side surface. The limiting side surface is located on the side of the limiting part near the inside of the receiving groove. A transition surface is provided at the junction of the limiting inner surface and the limiting side surface. The core-pulling mechanism of the production mold includes a first core-pulling component for forming the receiving groove and a second core-pulling component for forming the transition surface. The core-pulling direction of the first core-pulling component is perpendicular to the core-pulling direction of the second core-pulling component. The first core-pulling component is provided with a inclined rail connecting the movement of the second core-pulling component. When the first core-pulling component pulls the core, it drives the second core-pulling component to pull the core through the inclined rail. This utility model provides a charging accessory and a power bank that eliminates sharp edges, reduces scratches, and protects the charging cable. Furthermore, the core-pulling mechanism and production mold of this utility model facilitate the manufacture of the transition surface, require minimal modification to the mold, are easy to implement, and avoid affecting product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of charging product structure and manufacturing, and particularly to a charging accessory, a power bank, a core-pulling mechanism and a production mold. Background Technology

[0002] A power bank is a common portable charging device, which typically includes a casing, a battery located inside the casing, and a charging cable that connects the battery and extends to the outside of the casing. The charging cable includes wires and a charging connector, which is connected to the device being charged, such as a mobile phone or tablet.

[0003] Reference Figure 1 The outer surface of the casing is provided with a storage groove for storing the charging connector. The storage groove has an open side and a semi-enclosed limiting part. The space enclosed by the limiting part allows the wire to be connected to the charging connector. At the same time, the space enclosed by the limiting part is smaller than the charging connector. Therefore, when the wire is pulled, the charging connector will not come off directly from the open side.

[0004] However, there is a sharp edge on the side of the limiting part near the charging connector, which can scratch the charging cable during daily use. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a charging accessory that eliminates the sharp edge of the limiting part near the charging connector, reducing scratches and protecting the charging cable.

[0006] This utility model also proposes a power bank with the above-mentioned charging accessories.

[0007] This utility model also proposes a core-pulling mechanism for producing the above-mentioned charging accessories.

[0008] This utility model also proposes a production mold having the above-mentioned core-pulling mechanism.

[0009] A charging accessory according to a first aspect of the present invention includes a body having a storage groove for storing a charging connector. The storage groove has an open side and a semi-enclosed limiting portion. The space enclosed by the limiting portion allows the charging connector to connect to a wire. The limiting portion includes a limiting inner surface and a limiting side surface. The limiting inner surface is used to match the outer surface of the charging connector or the wire. The limiting side surface is located on the side of the limiting portion closer to the inside of the storage groove. A transition surface is provided at the junction of the limiting inner surface and the limiting side surface.

[0010] The charging accessory according to the embodiments of this utility model has at least the following beneficial effects:

[0011] This invention eliminates the sharp edge at the junction of the inner surface of the limiting device and the side surface of the limiting device by setting a transition surface. Therefore, when the wire is pulled and the charging connector is moved toward the open side, the edge of the wire or the charging connector can smoothly enter the space enclosed by the limiting recess from the transition surface, avoiding scratching the wire and the charging connector and protecting the charging cable.

[0012] This utility model also provides a power bank, which has the above-mentioned beneficial effects.

[0013] According to a first aspect of the present invention, the transition surface of the charging accessory includes a rounded corner or a chamfer.

[0014] And / or, the body has adjacent long and wide sides, the storage slot is located on the long side, the storage slot is located at the junction of the long side and the wide side, and the open side is located on the wide side.

[0015] According to a first aspect of the present invention, the charging accessory has an adjacent long side and a wide side, the storage slot is located on the long side, the storage slot is located at the junction of the long side and the wide side, and the open side is located on the wide side.

[0016] The power bank according to a second aspect of the present invention includes any of the charging accessories described above.

[0017] According to a third aspect embodiment of the present invention, the core-pulling mechanism is used to produce the charging accessories described in any one of the preceding claims. The core-pulling mechanism includes a first core-pulling member for forming the storage slot and a second core-pulling member for forming the transition surface. The core-pulling direction of the first core-pulling member is perpendicular to the core-pulling direction of the second core-pulling member. The first core-pulling member is provided with an inclined rail that connects the movement of the second core-pulling member. When the first core-pulling member pulls a core, the first core-pulling member drives the second core-pulling member to pull a core through the inclined rail.

[0018] The core-pulling mechanism according to the embodiments of this utility model has at least the following beneficial effects:

[0019] This invention, by setting a first core-pulling component, can form a storage groove, simplifying the production process and improving production efficiency.

[0020] This invention, by setting a second core-pulling component, facilitates the manufacturing of transition surfaces through mold forming, resulting in high forming quality. Furthermore, it eliminates the need for further processing to form the transition surface, reducing workload and manufacturing costs.

[0021] This invention uses an inclined rail to drive the interaction between the first core-pulling component and the second core-pulling component. Therefore, the movement of the first core-pulling component can drive the movement of the second core-pulling component, eliminating the need for a separate lateral core-pulling mechanism for the second core-pulling component. This simplifies the layout and reduces space occupation. Furthermore, since the storage groove is located away from the open side, it does not affect the original mold structure layout or product quality, and also reduces the difficulty of improvement.

[0022] This utility model also provides a production mold, which has the above-mentioned beneficial effects.

[0023] According to a third aspect embodiment of the present invention, the core-pulling mechanism has an adjacent long side and a wide side, the storage groove is located on the long side, the storage groove is located at the junction of the long side and the wide side, and the open side is located on the wide side.

[0024] The first core-pulling component is used to form the long side, and a cooling channel for cooling the long side is provided inside the first core-pulling component. The cooling channel is located on the side of the inclined rail away from the second core-pulling component.

[0025] According to a third aspect embodiment of the present invention, the core-pulling mechanism includes a third core-pulling member for forming the open side, the third core-pulling member being disposed opposite to the second core-pulling member, and the third core-pulling member and the second core-pulling member cooperating to form the limiting portion;

[0026] And / or, the first core-pulling component is provided with a forming oblique hole, the forming oblique hole is used to accommodate the oblique guide post passing through, the oblique guide post cooperates with the forming oblique hole to drive the first core-pulling component to move.

[0027] According to the third aspect embodiment of the present invention, the core-pulling mechanism,

[0028] The second core-pulling component includes a core-pulling body, which includes a core-pulling portion for forming the transition surface and a slide rail portion for forming the inclined rail. The core-pulling portion and the slide rail portion are arranged in a figure-7 shape. A slider is fixed to the slide rail portion. The first core-pulling component is provided with a transmission groove for accommodating the slider.

[0029] And / or, the core-pulling mechanism includes a fixing block mounted on the production mold, the fixing block having a sliding groove for accommodating the sliding of the slider.

[0030] According to a third aspect embodiment of the present invention, the slider is provided with a slot for receiving the slide rail portion and a mounting rod intersecting the slot, and the slide rail portion is provided with a recess for receiving the mounting rod through which it passes.

[0031] And / or, the slider has a transmission surface arranged along the core-pulling direction of the second core-pulling member, and the transmission surface has guide angles on both sides along the extension direction of the slide rail portion.

[0032] The production mold according to the fourth aspect of the present invention includes the core-pulling mechanism described in any one of the above claims.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the charging cable storage mechanism of an existing power bank;

[0036] Figure 2 This is a structural schematic diagram of a charging accessory according to the present invention;

[0037] Figure 3 For use in production Figure 2 A schematic diagram of the production mold for charging accessories;

[0038] Figure 4 for Figure 3 A cross-sectional schematic diagram of the core-pulling mechanism.

[0039] Reference numerals: Charging accessory 100; Body 110; Storage slot 120; Open side 130; Limiting part 140; Limiting inner surface 150; Limiting side 160; Transition surface 170; Long side 180; Wide side 190; Core pulling mechanism 200; First core pulling part 210; Second core pulling part 220; Inclined rail 230; Cooling channel 240; Forming inclined hole 250; Inclined guide post 260; Core pulling part 270; Slide rail part 280; Slider 290; Transmission groove 300; Sliding groove 310; Slot 320; Mounting rod 330; Guide angle 340; Punch 350. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, this is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The following description, in conjunction with the accompanying drawings, describes a charging accessory, a power bank, a core-pulling mechanism, and a production mold according to embodiments of the present invention.

[0045] The present invention aims to provide an embodiment of a power bank that is easy to carry and solves the problem of insufficient power in mobile phones and other devices.

[0046] In this embodiment, charging includes a main body and a charging cable. The main body includes a housing and a battery located inside the housing. The charging cable is electrically connected to the battery and includes a wire and a charging connector. The charging connector is connected to an electrical device, such as a mobile phone or tablet.

[0047] Among them, the outer shell reference Figure 2 As shown, the outer casing will have a storage slot 120, which can store the charging connector for easy carrying, or make it convenient to store the power bank at the charging station.

[0048] This utility model also aims to provide an embodiment of a charging accessory 100, which includes a component having the aforementioned storage slot 120, including... Figure 2 The outer casing shown.

[0049] In this embodiment, the charging accessory 100 includes a body 110, the body 110 having a storage groove 120 for storing a charging connector, the storage groove 120 having an open side 130, the open side 130 having a semi-enclosed limiting portion 140, the space enclosed by the limiting portion 140 allowing the charging connector to connect wires.

[0050] The limiting part 140 includes a limiting inner surface 150 and a limiting side surface 160. The limiting inner surface 150 is used to match the outer surface of the charging connector or wire. The limiting side surface 160 is located on the side of the limiting part 140 near the inside of the receiving groove 120. A transition surface 170 is provided at the junction of the limiting inner surface 150 and the limiting side surface 160.

[0051] For the transition surface 170, the transition surface 170 may be located only in the direction of the bottom of the receiving groove 120 to eliminate the distribution of long sharp edges, or it may be distributed at the junction of the limiting inner surface 150 and the limiting side surface 160.

[0052] It is easy to understand that by setting the transition surface 170, the sharp edge at the junction of the limiting inner surface 150 and the limiting side surface 160 is eliminated. Therefore, when the wire is pulled and the charging connector is moved toward the open side 130, the edge of the wire or the charging connector can smoothly enter the space enclosed by the limiting recess from the transition surface 170, avoiding scratching the wire and the charging connector and protecting the charging cable.

[0053] In some specific embodiments of this utility model, the transition surface 170 may include rounded corners or bevels.

[0054] It is easy to understand that by setting rounded or beveled corners, this embodiment can improve the junction between the inner surface 150 and the side surface 160 of the limit, making softer contact with the wires and charging connectors and reducing scratches.

[0055] Setting an angled corner simplifies mold machining and reduces manufacturing difficulty, while setting a rounded corner is more complex to process. However, the change in the area of ​​the inner surface 150 of the limit is small and does not affect the ability to limit the charging connector. It is convenient to use the cooperation between the limit part 140 and the charging connector to lift the entire power bank.

[0056] In this embodiment, the main body 110 has adjacent long side 180 and wide side 190. The storage slot 120 is located on the long side 180 and at the junction of the long side 180 and the wide side 190. The open side 130 is located on the wide side 190. Therefore, by using the cooperation between the limiting part 140 and the charging connector, the wire can be arranged into a loop, so that the wire has the ability to lift the power bank. That is, the power bank can be picked up by holding the wire without having to hold the main body of the power bank, which is convenient to use.

[0057] In some specific embodiments of this utility model, the storage slot 120 can be located at the wide side 190.

[0058] In some specific embodiments of this utility model, the storage slot 120 can be located on the large plane of the power bank, that is, the plane where the edges of the long side 180 and the wide side 190 are located, to meet different design and usage needs.

[0059] for Figure 2 The charging accessory 100 shown is for reference. Figure 3 This utility model also aims to provide a production mold, which is manufactured by injection molding or compression molding processes. Figure 2 The charging accessory 100 shown.

[0060] In some specific embodiments of this utility model, the receiving groove 120 can be formed by the punch 350 and the die of the production mold.

[0061] In this embodiment, since the storage slot 120 is located on the long side 180 of the body 110, the punch 350 and the die of the mold form the inner and outer surfaces of the charging accessory 100. That is, the punch 350 and the die of the mold form the inner and outer surfaces of the shell, which is convenient for manufacturing.

[0062] Therefore, in the production mold of this embodiment, the storage groove 120 can be formed by using a side core-pulling structure.

[0063] In some specific embodiments of this utility model, the side core-pulling structure can have a cooling channel 240, which includes a cooling channel parallel to the long side 180, so that the long side 180 of the charging accessory 100 is cooled uniformly, and a charging accessory 100 with high dimensional accuracy and high quality is produced.

[0064] To manufacture Figure 2 The transition surface 170 shown can be further processed after the charging accessory 100 is produced, such as by cutting the sharp edge to eliminate the sharp edge. However, cutting is mostly done manually, and the cutting quality is difficult to guarantee. Moreover, the cutting position is prone to color change, which affects the user experience.

[0065] Moreover, it is difficult to form a rounded transition surface 170 by cutting, which limits its application.

[0066] To manufacture Figure 2 The transition surface 170 shown allows the charging accessory 100 to be demolded at a higher temperature. By forcibly dragging the charging accessory 100, geometric interference during side core pulling can be overcome. However, the forced demolding method can easily cause the limiting part 140 to deform, affecting the limiting effect of the limiting part 140 on the charging connector, resulting in a low yield of the charging accessory 100.

[0067] To ensure product quality and overcome defects caused by sharp edges, this utility model also aims to provide an embodiment of a core-pulling mechanism 200 for production molds.

[0068] Reference Figure 4 The core-pulling mechanism 200 includes a first core-pulling member 210 for forming a storage groove 120 and a second core-pulling member 220 for forming a transition surface 170. The core-pulling direction of the first core-pulling member 210 is perpendicular to the core-pulling direction of the second core-pulling member 220. The first core-pulling member 210 is provided with a inclined rail 230 that connects the movement of the second core-pulling member 220. When the first core-pulling member 210 pulls the core, the first core-pulling member 210 drives the second core-pulling member 220 to pull the core through the inclined rail 230.

[0069] It is easy to understand that, in this embodiment, by setting the first core-pulling component 210, a storage groove 120 can be formed, which simplifies the production process and improves production efficiency.

[0070] This utility model, by setting a second core-pulling component 220, facilitates the manufacturing of the transition surface 170 through mold forming, resulting in high forming quality. Moreover, it eliminates the need for further processing to form the transition surface 170, reducing workload and manufacturing costs.

[0071] This invention, by setting an inclined rail 230 on the first core-pulling component 210 to drive the interaction of the second core-pulling component 220, allows the movement of the first core-pulling component 210 to drive the movement of the second core-pulling component 220, eliminating the need for a separate lateral core-pulling mechanism 200 for the second core-pulling component 220. This simplifies the layout and reduces space occupation. Furthermore, since the storage groove 120 is located away from the open side 130, it does not affect the original mold structure layout, such as the arrangement of the cooling channel 240, nor the product quality. At the same time, it reduces the difficulty of improvement.

[0072] In some specific embodiments of this utility model, the first core-pulling component 210 may be provided with a forming oblique hole 250, which is used to accommodate the oblique guide post 260 passing through. The oblique guide post 260 cooperates with the forming oblique hole 250 to drive the first core-pulling component 210 to move.

[0073] That is, when the production mold is opened and closed, the opening and closing action causes the inclined guide post 260 and the forming inclined hole 250 to move relative to each other, thereby causing the first core-pulling part 210 to move perpendicularly to each other, completing the side-pulling forming and simplifying the power configuration.

[0074] In some specific embodiments of this utility model, the second core-pulling component 220 may include a core-pulling body, which includes a core-pulling portion 270 for forming a transition surface 170 and a slide rail portion 280 for forming a slant rail 230. The core-pulling portion 270 and the slide rail portion 280 are arranged in a figure-7 shape. A slider 290 is fixed to the slide rail portion 280, and the first core-pulling component 210 is provided with a transmission groove 300 for accommodating the slider 290.

[0075] It is easy to understand that by setting the core-pulling part 270 and the slide rail part 280 in a figure-7 arrangement, this embodiment not only meets the molding requirements, but also precisely restricts the movement direction of the second core-pulling part 220, so that the second core-pulling part 220 and the first core-pulling part 210 are precisely matched to form the receiving groove 120 and the limiting part 140.

[0076] In some specific embodiments of this utility model, the connection between the core-pulling part 270 and the slide rail part 280 can be stepped to increase the physical connection between the core-pulling part 270 and the slide rail part 280, making the second core-pulling part 220 durable.

[0077] At the same time, the transmission groove 300 also causes the slider 290 to change position relative to the first core-pulling member 210, so that the first core-pulling member 210 and the second core-pulling member 220 change relative position to meet the demolding requirements.

[0078] In this embodiment, the second core-pulling member 220 is located inside the first core-pulling member 210. The inner surface of the first core-pulling member 210 can precisely fit with the first core-pulling member 210 to ensure reliable transmission. Moreover, the gaps are small, avoiding material overflow. Therefore, in this embodiment, the inclined rail 230 not only includes the part that contacts the guide rail 280, but may also include a part of the transmission groove 300, such as the transmission surface. The inclined rail 230 should not be narrowly interpreted as... Figure 4 The part indicated.

[0079] In some specific embodiments of this utility model, the first core-pulling component 210 can be precisely fitted with the core-pulling part 270 and the slide rail part 280 to avoid the injection molding material overflowing and affecting the surface quality of the product.

[0080] In some specific embodiments of this utility model, the core-pulling mechanism 200 may include a fixing block installed on the production mold, the fixing block having a sliding groove 310 for accommodating the sliding of the slider 290.

[0081] In some specific embodiments of this utility model, the slider 290 may be provided with a slot 320 for accommodating the slide rail portion 280 and a mounting rod 330 intersecting the slot 320, and the slide rail portion 280 may be provided with a recess for accommodating the mounting rod 330 through which it passes.

[0082] Therefore, during assembly, the slide rail 280 passes through the inclined rail 230 and enters the transmission groove 300. The slide rail 280 is inserted into the slot 320 of the slider 290. Then, the mounting rod 330 is pressed into the groove that intersects with the slot 320. At the same time, the mounting rod 330 is pressed into the recess, and the core-pulling body is fixed on the slider 290.

[0083] Therefore, in use, the slider 290 can not only make the second core-pulling part 220 move in a specific direction to meet the molding requirements, but also make the second core-pulling part 220 accurately positioned when the mold is closed, thus improving the dimensional accuracy of the transition surface 170.

[0084] In some specific embodiments of this utility model, the transmission groove 300 can have a hole for accommodating the slide rail 280, so the position of the slide rail 280 relative to the slider 290 can be adjusted as needed, which is convenient for debugging.

[0085] In some specific embodiments of this utility model, the first core-pulling component 210 can have a cover that covers the transmission groove 300, so as to prevent the mounting rod 330 from separating from the slider 290 and to prevent the core-pulling body 110 from moving relative to the slider 290 and affecting the effect.

[0086] In some specific embodiments of this utility model, the slider 290 may have a transmission surface arranged along the core-pulling direction of the second core-pulling member 220, and the transmission surface may have guide angles 340 on both sides along the extension direction of the slide rail portion 280.

[0087] It is easy to understand that this embodiment provides a transmission surface to facilitate the second core-pulling component 220 to abut against the transmission surface and drive the slider 290 to slide, thus meeting the requirements for mold opening and closing.

[0088] The guide angle of 340° also facilitates the introduction of air, reduces the resistance of the separation of the two sides of the slider 290, and at the same time reduces the scraping of the transmission surface edge against the second core-pulling component 220, thus reducing wear.

[0089] In some specific embodiments of this utility model, the core-pulling mechanism 200 may include a third core-pulling member for forming an open side 130, the third core-pulling member being disposed opposite to the second core-pulling member 220, and the third core-pulling member and the second core-pulling member 220 cooperating to form a limiting part 140.

[0090] It is easy to understand that by providing a third core-pulling component, this embodiment also facilitates the formation of the open side 130 and the limiting part 140 of the storage groove 120 by utilizing the cooperation of the third core-pulling component and the second core-pulling component 220, thus facilitating the manufacture of the charging accessory 100.

[0091] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0093] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0094] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0095] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0096] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A charging accessory, comprising a body (110), the body (110) having a storage slot (120) for storing a charging connector, the storage slot (120) having an open side (130), the open side (130) having a semi-enclosed limiting portion (140), the space enclosed by the limiting portion (140) allowing the charging connector to connect a wire, characterized in that, The limiting part (140) includes a limiting inner surface (150) and a limiting side surface (160). The limiting inner surface (150) is used to match the outer surface of the charging connector or the wire. The limiting side surface (160) is located on the side of the limiting part (140) close to the inside of the storage groove (120). A transition surface (170) is provided at the junction of the limiting inner surface (150) and the limiting side surface (160).

2. The charging accessory according to claim 1, characterized in that: The transition surface (170) includes rounded corners or bevels; And / or, the body (110) has adjacent long side (180) and wide side (190), the storage slot (120) is located on the long side (180), the storage slot (120) is located at the junction of the long side (180) and the wide side (190), and the open side (130) is located on the wide side (190).

3. The charging accessory according to claim 1, characterized in that: The body (110) has adjacent long side (180) and wide side (190), the storage slot (120) is located on the long side (180), the storage slot (120) is located at the junction of the long side (180) and the wide side (190), and the open side (130) is located on the wide side (190).

4. A power bank, characterized in that: Includes the charging accessory as described in any one of claims 1 to 3.

5. A core-pulling mechanism, characterized in that: The core-pulling mechanism (200) is used to produce the charging accessories according to any one of claims 1 to 3. The core-pulling mechanism (200) includes a first core-pulling member (210) for forming the storage slot (120) and a second core-pulling member (220) for forming the transition surface (170). The core-pulling direction of the first core-pulling member (210) is perpendicular to the core-pulling direction of the second core-pulling member (220). The first core-pulling member (210) is provided with a sloping rail (230) that connects the movement of the second core-pulling member (220). When the first core-pulling member (210) pulls the core, the first core-pulling member (210) drives the second core-pulling member (220) to pull the core through the sloping rail (230).

6. The core-pulling mechanism according to claim 5, characterized in that: The body (110) has adjacent long side (180) and wide side (190), the storage slot (120) is located on the long side (180), the storage slot (120) is located at the junction of the long side (180) and the wide side (190), and the open side (130) is located on the wide side (190). The first core-pulling member (210) is used to form the long side (180). The first core-pulling member (210) is provided with a cooling channel (240) for cooling the long side (180). The cooling channel (240) is located on the side of the inclined rail (230) away from the second core-pulling member (220).

7. The core-pulling mechanism according to claim 5, characterized in that: The core-pulling mechanism (200) includes a third core-pulling member for forming the open side (130), the third core-pulling member being disposed opposite to the second core-pulling member (220), and the third core-pulling member and the second core-pulling member (220) cooperating to form the limiting portion (140). And / or, the first core-pulling component (210) is provided with a forming oblique hole (250), the forming oblique hole (250) is used to accommodate the oblique guide post (260) passing through, the oblique guide post (260) cooperates with the forming oblique hole (250) to drive the first core-pulling component (210) to move.

8. The core-pulling mechanism according to claim 5, characterized in that: The second core-pulling component (220) includes a core-pulling body, which includes a core-pulling portion (270) for forming the transition surface (170) and a slide rail portion (280) for forming the inclined rail (230). The core-pulling portion (270) and the slide rail portion (280) are arranged in a figure-7 shape. A slider (290) is fixed on the slide rail portion (280). The first core-pulling component (210) is provided with a transmission groove (300) for accommodating the slider (290). And / or, the core-pulling mechanism (200) includes a fixing block mounted on the production mold, the fixing block having a sliding groove (310) for accommodating the sliding of the slider (290).

9. The core-pulling mechanism according to claim 5, characterized in that: The slider (290) is provided with a slot (320) for accommodating the slide rail (280) and a mounting rod (330) intersecting the slot (320). The slide rail (280) is provided with a recess for accommodating the mounting rod (330) through which it passes. And / or, the slider (290) has a transmission surface arranged along the core-pulling direction of the second core-pulling member (220), and the transmission surface is provided with guide angles (340) on both sides along the extension direction of the slide rail (280).

10. A production mold, characterized in that: Includes the core-pulling mechanism as described in any one of claims 5 to 9.

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