A strong and durable card holder

Abstract

The utility model discloses a card holder with high durability, which comprises a card holder body, a cap and an ejector. The card holder body is composed of a card holder steel sheet and a first plastic part coated on the card holder steel sheet; the cap is composed of a cap steel sheet and a second plastic part coated on the cap steel sheet. The ejector is rotatably installed on the card holder steel sheet near the cap end by a second rivet and has a first acting end and a second acting end arranged oppositely; the cap is riveted with the card holder body by a first rivet, the first rivet passes through an active limiting slot on the connecting lug plate of the cap steel sheet and a first rivet mounting hole on the card holder steel sheet in sequence, so that the cap can slide in the active limiting slot in the X direction. The first acting end of the ejector corresponds to a through hole on the cap, and the second acting end cooperates with an abutting plate on the cap steel sheet. The utility model can realize high-strength installation of the ejector in a limited space and improve the mechanical strength of the connection, so that the compactness and durability of the overall structure of the card holder coexist.

Description

Technical Field

[0001] This utility model relates to the field of electronic card connector technology, and in particular to a card tray with high durability. Background Technology

[0002] The trend towards thinner and lighter mobile phone designs has directly driven technological innovation in SIM cards and their trays and connectors. To maximize the saving of internal space in devices, SIM cards themselves are becoming smaller and thinner, and the development of highly compatible miniature and ultra-thin trays and connectors has become an inevitable direction for evolution.

[0003] Patent document CN115483940B discloses a card tray assembly and an electronic device. This solution achieves a movable connection between the card cap and the card tray body through a connecting rod structure. Specifically, one end of the connecting rod is rotatably connected to the card cap, and the other end is rotatably connected to the card tray body. The connecting rod is driven by an ejection mechanism inside the electronic device. While this design achieves a movable connection between the card cap and the card tray body, improving the convenience of card retrieval to some extent, its reliance on a built-in ejection mechanism still has significant shortcomings: Firstly, the ejection mechanism occupies valuable internal space within the electronic device, hindering miniaturization and high integration design; secondly, the ejection mechanism typically includes a driving component and an ejector component, resulting in a complex structure with numerous parts, making it unsuitable for small components like card trays that require high space and structural simplicity.

[0004] Patent document CN113472376A discloses a card tray assembly. This design achieves a sliding connection between the card cap and the card tray body by engaging a protrusion on the card tray body with a groove on the card cap. An elastic element is installed between the two, using its elastic force to push the card cap. Furthermore, the assembly includes an independent card ejection mechanism, which slides left and right to lock and eject the card tray. While this design simplifies the ejection section by utilizing a sliding connection, it still relies on a relatively complex and space-consuming card ejection mechanism, resulting in reduced overall space utilization efficiency and failing to meet the high standards of spatial layout and structural simplicity required for card tray components.

[0005] Therefore, it is necessary to design a new utility model to solve the above-mentioned technical problems. Utility Model Content

[0006] One of the main objectives of this invention is to provide a durable card holder that can achieve high-strength installation of the ejector within a limited space and improve the mechanical strength of the connection, thereby achieving both compactness and durability in the overall structure of the card holder.

[0007] The present invention achieves the above objectives through the following technical solution: a durable card tray, comprising: a card tray body, a card cap, and an ejector; The card tray body includes a card tray steel sheet and a first plastic part injection molded onto the card tray steel sheet; the card cap includes a card cap steel sheet and a second plastic part injection molded onto the card cap steel sheet; the ejector is rotatably disposed on the card tray steel sheet near the card cap by a second rivet, and has a first working end and a second working end opposite to each other; The card holder steel sheet has a first rivet mounting hole and a second rivet mounting hole for mounting the second rivet at one end near the card cap; the card cap steel sheet has a connecting ear plate, and the connecting ear plate has a movable limiting groove corresponding to the position of the first rivet mounting hole; the card cap and the card holder body are riveted together by the first rivet passing through the movable limiting groove and the first rivet mounting hole in sequence; the card cap has a degree of freedom of movement in the X direction relative to the card holder body, and the range of movement of the card cap is limited by the movable limiting groove; The cap has a through hole that corresponds to the position of the first working end and extends along the X direction.

[0008] Furthermore, the steel plate of the card holder is folded 180° at one end near the card cap to form a double-layered reinforced structure composed of a first support plate and a second support plate, with the first support plate located above the second support plate; a gap space is provided between the first support plate and the second support plate, and the gap space is filled with plastic material.

[0009] Furthermore, one side of the second support plate is adjacent to the card holder steel sheet body, and the other side is connected to the first support plate. The second support plate adopts a sunken bending structure, and the height of its plate surface is lower than the height of the card holder steel sheet body plate surface.

[0010] Furthermore, the first support plate is provided with an avoidance notch, and the second support plate is exposed to the outside at the avoidance notch to form an ejector mounting area, and the ejector is mounted on the ejector mounting area on the second support plate.

[0011] Furthermore, the height of the ejector mounting area is lower than the height of the adjacent two side areas.

[0012] Furthermore, the second plastic part has a first surface exposed to the electronic device housing and a second surface opposite to the first surface in the X direction; an abutment plate is provided on the second surface, which is exposed on the second surface and abuts against the second functional end; Furthermore, the abutment plate is part of the cap steel sheet, and it has an exposed steel sheet structure design on the second surface.

[0013] Furthermore, the first rivet mounting hole includes a first mounting hole disposed on the first support plate and corresponding to the movable limiting groove, and a second mounting hole disposed on the second support plate and corresponding to the first mounting hole, wherein the size of the second mounting hole is smaller than that of the first mounting hole; the ejector is provided with a third mounting hole for mounting the second rivet, wherein the second rivet mounting hole is disposed in the mounting area of ​​the ejector and corresponding to the third mounting hole.

[0014] Furthermore, the first rivet and the second rivet have the same structure, both including a first column portion and a second column portion with a diameter smaller than that of the first column portion; the first column portion passes through the first mounting hole or the third mounting hole, and the second column portion passes through the second mounting hole or the second rivet mounting hole respectively; after the first rivet and the second rivet are riveted, an axial limiting groove for clamping the second support plate or the ejector mounting area is formed on the second column portion.

[0015] Furthermore, it also includes a waterproof rubber ring disposed on the second plastic part.

[0016] Compared with the prior art, the advantages of this durable card tray are as follows: (1) A new connection structure for the card holder and the card cap is provided. In conjunction with the structural design of the ejector, compared with the traditional ejector set at the end of the card holder and the card holder popped out with the pull rod, this solution sets the ejector near the connection area between the card holder and the card holder body. The card holder is installed by partial sinking through double-layer folded steel sheet, which effectively reduces the installation foundation height of the ejector. This ensures that the ejector has sufficient thickness and strength while controlling the overall thickness of the card holder. Compared with the existing card holder and card holder body linkage connection structure, this solution has higher connection strength.

[0017] (2) Significantly improve the mechanical strength and durability of the connection area: By folding the end of the card holder steel plate 180°, a double-layer reinforced structure composed of the first support plate and the second support plate is formed, which greatly enhances the bending and deformation resistance of the connection between the card cap and the card holder body, effectively avoiding metal fatigue or fracture caused by stress concentration, thereby extending the overall service life of the card holder.

[0018] (3) Optimize the structural layout within a limited space to achieve a balance between high strength and thinness: The innovative sunken design (such as the height of the ejector installation area being lower than the second support plate) provides a larger Z-axis installation space for key components such as ejectors under the premise of limited overall thickness of the card tray, allowing the use of ejectors with greater thickness and higher strength, thus resolving the contradiction of sacrificing the strength of parts in pursuit of thinness. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the front of the device in this embodiment where the electronic card is placed; Figure 2 This is a schematic diagram of the reverse side of the structure where the electronic card is placed in this embodiment; Figure 3 This is a schematic diagram of the exploded structure of this embodiment; Figure 4 This is an exploded structural diagram of the cap steel sheet, rotating shaft, and card holder steel sheet in this embodiment; Figure 5 This is a partial structural diagram of this embodiment; Figure 6 This is a three-dimensional structural diagram of the first rivet in this embodiment; The diagram is marked as follows: 100 - Durable card tray; 200 - First electronic card; 300 - Second electronic card; 400 - Third electronic card; 1-Card holder body, 11-First plastic part, 12-Card holder steel sheet, 121-First support plate, 122-Second support plate, 1221-Ejector mounting area, 12211-Isolation slot, 123-Card holder steel sheet body, 1231-Side enclosure, 12311-Slot, 1232-Protruding plate, 124-Gap space, 13-First card slot, 14-Second card slot, 15-Third card slot, 16-First rivet mounting hole, 161-First mounting hole, 162-Second mounting hole, 17-Second rivet mounting hole; 2-Cap, 21-Second plastic part, 211-First surface, 212-Perforation, 213-Second surface, 2131-Abutting plate, 22-Cap steel sheet, 221-Needle insertion port, 222-Connecting ear plate, 2221-Modular limiting groove; 3-Ejector, 31-First working end, 32-Second working end, 33-Third mounting hole; 4- Waterproof rubber ring; 5-First rivet, 51-First column portion, 52-Second column portion, 53-Axial limiting groove, 531-First clamping surface, 532-Second clamping surface; 6-Second rivet. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to specific embodiments.

[0021] Example: Please refer to Figures 1-6This embodiment provides a durable card holder. The card holder 100 includes a card holder body 1, a card cap 2 slidably connected to the card holder body 1, an ejector 3 rotatably disposed near the card cap 2 on the card holder body 1, and a waterproof rubber ring 4 mounted on the card cap 2. The card holder body 1 includes a first plastic part 11 and a card holder steel sheet 12 embedded at the middle height position of the first plastic part 11. The card cap 2 includes a second plastic part 21 and a card cap steel sheet 22 integrally formed with the second plastic part 21.

[0022] The card tray body 1 has a first card slot 13 on its front side for holding a first electronic card 200, and a second card slot 14 and a third card slot 15 on its back side for holding a second electronic card 300 and a third electronic card 400. The first electronic card 200 is a Micro SIM card or an SD card, and its size and height match the first card slot 13. The second electronic card 300 and the third electronic card 400 have the same shape and size, both being Nano SIM cards or SD cards, and their sizes and heights are adapted to the second card slot 14 and the third card slot 15, respectively.

[0023] In this embodiment, the card tray 100 is designed as a three-in-one card tray. In other embodiments, the card tray 100 may also be designed as a double-layer stacked card tray or a two-in-one card tray. This embodiment does not limit the number of electronic cards that the card tray 100 can hold.

[0024] The card holder steel sheet 12 is made of stainless steel and is integrated with the first plastic part 11 through a submersible injection molding process. The card holder steel sheet 12 provides bottom support for the first electronic card 200 in the first card slot 13, and also provides support for the second electronic card 300 in the second card slot 14 and the third electronic card 400 in the third card slot 15.

[0025] Since the SIM card tray 100 needs to be inserted into the phone, it must meet the design requirements of miniaturization and thinness to avoid affecting the structure and function of internal components such as the phone screen and battery. In the prior art, the thickness of the SIM card tray steel sheet 12 is often reduced to achieve overall thinness, but excessive thinning can easily lead to a decrease in mechanical strength, especially in the connection area of ​​the SIM card cap 2, where stress concentration makes it more prone to damage. To solve this problem, in this embodiment, the end of the SIM card tray steel sheet 12 near the SIM card cap 2 is folded 180° to form a double-layered reinforced area composed of a first support plate 121 and a second support plate 122. This design significantly improves the mechanical strength and deformation resistance of this part, thereby ensuring the connection reliability and overall durability of the SIM card tray 100 during long-term use. Furthermore, the first support plate 121 is located directly above the second support plate 122. One side of the second support plate 122 is adjacent to the card holder steel sheet body 123, and the other opposite side is adjacent to the first support plate 121. The first support plate 121 is folded upwards 180° from the end of the second support plate 122 away from the card holder steel sheet body 122, covering the top of the second support plate 122. The second support plate 122 is lower in height than the portion of the card holder steel sheet body 123 (i.e., the folded portion of the card holder steel sheet 12), forming a partially sunken structure. This lowers the height of the double-layer reinforced area, effectively solving the problem of increased card holder height caused by the installation of other parts in this area.

[0026] A gap space 124 is reserved between the first support plate 121 and the second support plate 122, and the gap space 124 is filled with plastic material. This gap space 124 allows molten plastic to be injected into it during the injection molding process, thereby enhancing the bonding force between the first plastic part 11 and the card holder steel sheet 12, and further improving the overall strength and reliability of the integrated structure of the card holder body 1.

[0027] In addition, the card holder steel sheet body 123 is provided with several side barriers 1231 on both sides to form the first card slot 13, the second card slot 14 and the third card slot 15 lateral barriers. In order to enhance the bonding strength between the card holder steel sheet 12 and the first plastic part 11, several slots 12311 are provided on the side barriers 1231, and several protrusions 1232 are also provided on the card holder steel sheet 12 for hooking the first plastic part 11. During the molding process, the protrusions 1232 are embedded into the first plastic part 11 to form a hook structure, thereby improving the bonding strength between a part of the card holder steel sheet 12 and the first plastic part 11.

[0028] The cap steel plate 22 is connected to the tray steel plate 12 by a first rivet 5. The second plastic part 21 has a first surface 211 that is exposed outside the electronic device housing when the tray 100 is fully inserted into the electronic device. The second plastic part 21 has a through hole 212 designed to extend along the X direction for inserting the SIM card. To mate with the through hole 212, the cap steel plate 22 has a needle insertion port 221 that conforms to the movement trajectory of the SIM card. In addition, the cap steel plate 22 also has a pair of connecting ear plates 222 extending out of one side surface of the second plastic part 21, which are riveted to the tray steel plate 12. The connecting ear plates 222 have a pair of movable limiting grooves 2221 for the first rivet 5 to pass through and to limit the range of motion of the first rivet 5. The connecting ear plates 222 extend out of the second surface 213 of the second plastic part 21. The second surface 213 and the first surface 211 are two opposite surfaces of the second plastic part 21 in the X direction, and the connecting ear plates 222 extend horizontally along the X direction.

[0029] The ejector 3 is located between a pair of connecting lugs 222 and is rotatably mounted on the bracket steel plate 12 by the second rivet 6. To provide mounting space for the ejector 3 on the bracket steel plate 12 and minimize its height on the plate, thereby reducing the overall thickness of the bracket 100, a clearance notch is provided on the first support plate 121. The second support plate 122 is exposed corresponding to the clearance notch area, forming the ejector mounting area 1221. While a thicker ejector 3 results in greater structural strength, its mounting height is limited. To install a higher-strength ejector 3, it is mounted on the lower second support plate 122, thus reducing the mounting base height and allowing for a thicker structure to enhance its strength. To further reduce the mounting base height, the ejector mounting area 1221 is recessed. To achieve a further downward design of the ejector mounting area 1221, isolation slots 12211 are provided on both sides of the ejector mounting area 1221 on the second support plate 122 in the Y direction, which isolate the ejector mounting area 1221 from other areas of the second support plate 122. This allows the ejector mounting area 1221 to be bent downward on the second support plate 122, making the height of the ejector mounting area lower than the surrounding area, i.e., its downward degree is greater than that of other areas of the second support plate 122.

[0030] The ejector 3 is rotatable around the second rivet 6, and includes a first working end 31 and a second working end 32 located on both sides of the second rivet 6. The first working end 31 is correspondingly provided with the through hole 212 and the needle insertion port 221, and the second working end 32 is correspondingly provided with the second surface 213. When the card holder 100 is inside the electronic device, the distance between the abutment part 2131 and the second rivet 6 is the first distance, and the first working end 31 and the second working end 32 are in the space corresponding to the first distance. When it is necessary to remove the card holder 100 from the device, the user inserts a SIM card pin into the card holder 100 through the through hole 212. When the end of the SIM card pin abuts against the first working end 31, the SIM card pin pushes the first working end 31 to move away from the card cap 2, causing the ejector 3 to rotate around the second rivet 6, thereby driving the second working end 32 to rotate toward the card cap 2 until the second working end 32 abuts against the second surface 213. Subsequently, the second working end 32 continues to rotate toward the card cap 2, pushing the card cap 2 to move in the X direction. At this time, the distance between the second surface and the second rivet 6 becomes the second distance, which is greater than the first distance. Under the constraint of the cooperation between the first rivet 5 and the movable limiting groove 2221, the card cap 2 moves a limited distance in the X direction, thereby realizing the ejection of the card holder 100 from the electronic device.

[0031] As the ejector 3 rotates, its second working end 32 continuously abuts against the second surface 213, making this area prone to wear. Therefore, this embodiment employs an exposed steel sheet design at the second surface 213. Utilizing the excellent wear resistance of stainless steel, the wear on the second working surface 213 is significantly reduced, thereby effectively extending the service life of the card holder 100. Specifically, the card cap steel sheet 22 is provided with an abutment plate 2131 exposed on the second surface 213 and abutting against the second working end 32.

[0032] The first rivet 5 and the second rivet 6 have the same structure, both including a first column portion 51 and a second column portion 52 with a diameter smaller than the first column portion 51. To install the first rivet 5 and allow the card holder body 1 and card cap 2 to slide together, the card holder body 1 is provided with a first rivet mounting hole 16. Specifically, the first rivet mounting hole 16 includes a first mounting hole 161 disposed on the first support plate 121 and corresponding to the movable limiting groove 2221, and a second mounting hole 162 disposed on the second support plate 122 and corresponding to the first support plate 121. The size of the second mounting hole 162 is smaller than that of the first mounting hole 161.

[0033] In addition, to install the second rivet 6 and rotatably connect the ejector 3 to the tray body 1, the ejector 3 is provided with a third mounting hole 33 for installing the second rivet 6, and the tray body 1 is provided with a second rivet mounting hole 17. Specifically, the second rivet mounting hole 17 is located in the ejector mounting area 1221 and corresponds to the third mounting hole 33. The size of the second rivet mounting hole 17 is the same as the size of the second mounting hole 162 and smaller than the size of the third mounting hole 33. The size of the third mounting hole 33 is the same as the size of the first mounting hole 161.

[0034] During installation, the first rivet 5 passes sequentially through the movable limiting groove 2221 and the first rivet mounting hole 16. Specifically, its first column portion 51 passes through the first mounting hole 161, which is adapted to its size, and its second column portion 52 passes through the second mounting hole 162, which is adapted to its size. The second rivet 6 passes sequentially through the third mounting hole 33 and the second rivet mounting hole 17. Specifically, its first column portion 51 passes through the third mounting hole 33, which is adapted to its size, and its second column portion 52 passes through the second rivet mounting hole 17, which is adapted to its size. After assembly, the upper and lower ends of the first rivet 5 and the second rivet 6 are riveted to form an axial limiting groove 53 at the second column portion 52. This axial limiting groove 53 includes a first clamping surface 531 formed by the diameter difference between the first column portion 51 and the second column portion 52, and a second clamping surface 532 axially opposite to the first clamping surface 531. The first clamping surface 531 abuts against the upper circumferential surface of the second mounting hole 162 or the second rivet mounting hole 17 on the second support plate 122, and the second clamping surface 532 abuts against the lower circumferential surface of the second mounting hole 162 or the second rivet mounting hole 17 on the second support plate 122. Through the cooperation of the first clamping surface 531 and the second clamping surface 532, the first rivet 5 and the second rivet 6 are clamped and fixed to the second support plate 122 respectively, effectively suppressing axial shaking at the rivet mounting point. In addition, the fitting precision between the rivet and the mounting hole also effectively avoids circumferential rotation.

[0035] The above are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A durable card tray, characterized in that: It includes the cartridge body, the cartridge cap, and the ejector. The card tray body includes a card tray steel sheet and a first plastic part injection molded onto the card tray steel sheet; the card cap includes a card cap steel sheet and a second plastic part injection molded onto the card cap steel sheet; the ejector is rotatably disposed on the card tray steel sheet near the card cap by a second rivet, and has a first working end and a second working end opposite to each other; The card holder steel sheet has a first rivet mounting hole and a second rivet mounting hole for mounting the second rivet at one end near the card cap; the card cap steel sheet has a connecting ear plate, and the connecting ear plate has a movable limiting groove corresponding to the position of the first rivet mounting hole; the card cap and the card holder body are riveted together by the first rivet passing through the movable limiting groove and the first rivet mounting hole in sequence; the card cap has a degree of freedom of movement in the X direction relative to the card holder body, and the range of movement of the card cap is limited by the movable limiting groove; The cap has a through hole that corresponds to the position of the first working end and extends along the X direction.

2. The durable cartridge as claimed in claim 1, characterized in that: The card holder steel sheet is folded 180° at one end near the card cap to form a double-layer reinforced structure composed of a first support plate and a second support plate, with the first support plate located above the second support plate; a gap space is provided between the first support plate and the second support plate, and the gap space is filled with plastic material.

3. The durable cartridge as claimed in claim 2, characterized in that: One side of the second support plate is adjacent to the card holder steel sheet body, and the other side is connected to the first support plate. The second support plate adopts a sunken bending structure, and the height of its plate surface is lower than the height of the card holder steel sheet body plate surface.

4. The durable cartridge as claimed in claim 2, characterized in that: The first support plate is provided with an avoidance notch, and the second support plate is exposed to the outside corresponding to the avoidance notch to form an ejector mounting area, and the ejector is mounted on the ejector mounting area on the second support plate.

5. The durable cartridge as claimed in claim 4, characterized in that: The height of the ejector mounting area is lower than the height of the adjacent two side areas.

6. The durable cartridge as claimed in claim 1, characterized in that: The second plastic part has a first surface exposed to the electronic device housing and a second surface opposite to the first surface in the X direction; an abutment plate is provided on the second surface, which is exposed on the second surface and abuts against the second functional end.

7. The durable cartridge as claimed in claim 6, characterized in that: The abutment plate is part of the cap steel sheet, and it has an exposed steel sheet structure design on the second surface.

8. The durable cartridge as claimed in claim 2, characterized in that: The first rivet mounting hole includes a first mounting hole disposed on the first support plate and corresponding to the movable limiting groove, and a second mounting hole disposed on the second support plate and corresponding to the first mounting hole. The size of the second mounting hole is smaller than that of the first mounting hole. The ejector is provided with a third mounting hole for mounting the second rivet. The second rivet mounting hole is disposed in the mounting area of ​​the ejector and corresponding to the third mounting hole.

9. The durable cartridge as claimed in claim 7, characterized in that: The first rivet and the second rivet have the same structure, both including a first column portion and a second column portion with a diameter smaller than the first column portion; the first column portion passes through the first mounting hole or the third mounting hole, and the second column portion passes through the second mounting hole or the second rivet mounting hole respectively; after the first rivet and the second rivet are riveted, an axial limiting groove for clamping the second support plate or the ejector mounting area is formed on the second column portion.

10. The durable cartridge as claimed in claim 1, characterized in that: It also includes a waterproof rubber ring disposed on the second plastic part.

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