Guide rail type two-out-of-three SIM card holder

Abstract

The invention provides a guide rail type two-out-of-three SIM card seat. The guide rail type two-out-of-three SIM card seat comprises a circuit board, a first connecting seat and a second connecting seat, wherein a first bonding pad, a second bonding pad and a third bonding pad are arranged on the circuit board; the first connecting seat is arranged above the circuit board, and the first connecting seat is provided with a first card slot into which a first SIM card is inserted; and the second connecting seat is arranged above the second connecting seat, the second connecting seat is connected with the circuit board, and the second connecting seat is provided with a second card slot for inserting a second SIM card or a T card. Through the first connecting seat and the second connecting seat which are arranged in a laminated manner, the vertical space of the card seat is effectively utilized, so that the double-card function can be integrated and assembled on a limited circuit board area. The laminated card seat structure enables the whole SIM card seat to increase the functions of the card seat without increasing the plane space of the equipment, and a user can freely combine and use different SIM cards and memory cards according to the needs, thereby satisfying diversified use scenes.

Description

Technical Field

[0001] The invention relates to the field of SIM card sockets, and in particular to a guide rail type three-choice-two SIM card socket. Background Art

[0002] In the current mobile communications field, with the rapid development of technology and the continuous changes in market demand, especially the rapid development of industries such as express delivery, the requirements for smartphones and other QR code scanning terminal products are increasing. These products not only need to have a higher level of intelligence, but also require to be thinner, more portable, and integrate more functions to meet diverse usage scenarios. In particular, key components such as battery connectors and SIM card holders require 8 PINs or even more because the battery connector needs to support more PIN pins to realize functions such as battery detection and fuel gauge, resulting in limited space for the SIM card holder next to the battery holder.

[0003] Traditional SIM card holders are often designed with a single card slot or dual card slots, but the layout is not compact enough to meet the current smartphone's demand for efficient use of space. Especially in some devices that need to support multiple SIM cards (such as dual-SIM dual standby) and additional memory cards (such as T cards), traditional SIM card holders often have unreasonable card slot layouts when dealing with the need for multiple card slots, resulting in low space utilization.

[0004] Therefore, it is necessary to provide a guide rail type three-choice-two SIM card holder to solve the above technical problems. Summary of the invention

[0005] The invention provides a guide rail type three-choice-two SIM card holder to solve the problem of low space utilization of the card holder due to unreasonable card slot layout in the prior art.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a guide rail type three-choice-two SIM card holder, which comprises:

[0007] A circuit board, wherein the circuit board is provided with:

[0008] A first solder pad, wherein the first solder pad group is located at one side of the top end of the circuit board;

[0009] The second solder pads are provided in two groups, and the two groups of the second solder pads are relatively arranged at two sides of the top of the circuit board; and

[0010] The third solder pads are provided in two groups, and the two groups of the third solder pads are relatively arranged at two sides of the top of the circuit board;

[0011] A first connection socket, arranged above the circuit board, the first connection socket being provided with a first SIM card slot and a first connection terminal, the first SIM card slot being used to place a first SIM card, one end of the first connection terminal being connected to the first SIM card, and the other end of the first connection terminal being connected to the first solder pad; and

[0012] The second connection socket is arranged above the first connection socket, and the second connection socket is connected to the circuit board. The second connection socket is provided with a second card slot for inserting a second SIM card or a T card. The second connection socket is provided with a second connection terminal and a third connection terminal. One end of the second connection terminal is connected to the T card, and the other end of the second connection terminal is connected to the second soldering pad; one end of the third connection terminal is connected to the second SIM card, and the other end of the third connection terminal is connected to the third soldering pad.

[0013] In the present invention, a plurality of the first solder pads are provided, the plurality of the first solder pads are located at one end of the length direction of the circuit board, and the plurality of the first solder pads are arranged at intervals along the width direction of the circuit board;

[0014] There are a plurality of second soldering pads, and the plurality of second soldering pads are arranged in two groups, and the two groups of second soldering pads are respectively arranged at two ends along the width direction of the circuit board;

[0015] The third pad is located on the side of the second pad away from the first pad. There are a plurality of third pads, and the plurality of third pads are arranged in two groups. The two groups of third pads are respectively arranged at both ends along the width direction of the circuit board.

[0016] In the present invention, the first connecting seat comprises:

[0017] A first card core, located above the circuit board;

[0018] A card taking steel sheet, slidably connected to the top of the first card core, for slidingly taking out the first SIM card;

[0019] A first connecting terminal is arranged on the first card core, one end of which extends into the first card slot for contacting the first SIM card, and the other end of which is connected to the first solder pad;

[0020] Wherein, the top of the first card core is provided with a first slide groove, and the card taking steel sheet comprises:

[0021] A fixing plate, located between the first card core and the second connecting seat, and used to define the position of the top of the first SIM card;

[0022] A slide plate is connected to the width direction side of the fixed plate, the bottom end of the slide plate extends downward, and the slide plate is slidably connected to the first slide groove, so as to realize the sliding of the card taking steel sheet;

[0023] A sinking plate, located at one end of the fixed plate in the length direction, and the plane where the bottom surface of the sinking plate is located is located below the plane where the bottom surface of the fixed plate is located, the sinking plate is used to limit the position of the first SIM card, and the sinking plate is used to push the first SIM card out of the first card slot; and

[0024] A pulling plate is connected to the other end of the fixed plate in the length direction, and the pulling plate is used to pull the card-taking steel sheet.

[0025] In the present invention, the first connecting terminal comprises:

[0026] A first fixing frame connected to the first card core;

[0027] A first spring sheet, arranged in the first fixing frame, for contacting the SIM card;

[0028] A first extension end is disposed in the first card core and connects the first fixing frame to the first lead-out end;

[0029] A first lead-out terminal connected to a first pad on the circuit board;

[0030] Wherein, a plurality of first fixing frames of the first connecting terminals are arranged in a rectangular array.

[0031] In the present invention, the first connection terminal further comprises a welding protrusion, and the welding protrusion is arranged on the peripheral side of the first fixing frame;

[0032] The first clamp core is provided with a first spot welding hole, the first spot welding hole corresponds to the position of the welding protrusion, and the welding protrusion is fixed to the first spot welding hole by welding.

[0033] In the present invention, the second connecting base comprises:

[0034] A second card core is arranged above the first connecting seat, a second card slot is arranged at the top of the second card core, and the second card slot is used for inserting a SIM card or a T card;

[0035] An iron shell, covering the second card core, with two sides of the iron shell extending downward and welded to the circuit board;

[0036] A second connecting terminal connected to the second card core, one end of the second connecting terminal extending into the second card slot for connecting to the T card, and the other end extending along the width direction of the second card core and connected to the second soldering pad; a plurality of second connecting terminals are provided, and the plurality of second connecting terminals are divided into two groups and are relatively arranged on both sides of the width direction of the second card core; and

[0037] The third connecting terminal is connected to the second card core, and the third connecting terminal is located on the other side of the second connecting terminal along the length direction of the second card core. One end of the third connecting terminal extends into the second card slot, and one end of the third connecting terminal is used to connect the SIM card. The other end of the third connecting terminal extends in the width direction of the second card core, and the other end of the third connecting terminal is connected to the third soldering pad.

[0038] In the present invention, the second connecting terminal comprises:

[0039] A second spring sheet is arranged at one end of the second connecting terminal, one end of the second spring sheet extends into the second card slot along one side of the length direction of the second card core, the second spring sheet is used to connect the T card, and the second spring sheets of several second connecting terminals in each group are arranged at intervals along the width direction of the second card core;

[0040] A second lead-out end, located at the other end of the second connecting terminal, the second lead-out end is connected to the second solder pad, and the second lead-out ends of the plurality of second connecting terminals in each group are arranged at intervals along the length direction of the second card core; and

[0041] The second extension end is arranged in the middle of the second connecting terminal, and the second extension end connects the second spring piece and the second lead-out end.

[0042] In the present invention, the third connecting terminal comprises:

[0043] A third elastic sheet, arranged at one end of the third connecting terminal, one end of the third elastic sheet extends into the second card slot, the third elastic sheet is used to connect the second SIM card, and the third elastic sheets of the third connecting terminals are distributed in a rectangular array;

[0044] A third lead-out end is arranged at the other end of the third connecting terminal, the third lead-out end is connected to the third soldering pad, and the third lead-out ends of the third connecting terminals in each group are arranged at intervals along the length direction of the second card core; and

[0045] The third extension end is located in the middle of the third connecting terminal. The third extension end is arranged in the second card core. The third extension end connects the third spring piece and the third lead-out end.

[0046] In the present invention, the iron shell comprises:

[0047] A top plate, located above the second card core;

[0048] The third side walls are provided in two groups, and the two groups of the third side walls extend downwardly on both sides in the width direction of the top plate;

[0049] a fourth side wall connected to one side of the top plate in the length direction, the fourth side wall being located at one side of the second card core in the length direction, and the fourth side wall being used to define the position of the T card; and

[0050] The fourth solder pin is connected to the bottom end of the third side wall. There are a plurality of the fourth solder pins, which are respectively located on both sides of the length direction of the third side wall, and the fourth solder pin is located below the first card core and the second card core. The top end of the fourth solder pin covers the bottom end of the first card core and the bottom end of the second card core, and the bottom end of the fourth solder pin is welded to the circuit board.

[0051] In the present invention, the top plate is provided with a first removal hole and a second removal hole corresponding to the second card slot, the first removal hole is located at the other side of the length direction of the top plate, and the first removal hole is used to remove the SIM card.

[0052] The second removal hole is located at one side of the top plate in the length direction, and the second removal hole is used to remove the T card.

[0053] Compared with the prior art, the present invention has the following beneficial effects: the rail-type three-choice-two SIM card holder of the present invention effectively utilizes the vertical space of the card holder through the stacked first connection seat and the second connection seat, so that the dual card function can be integrated and assembled on a limited circuit board area. The first solder pad group is located on one side of the top of the circuit board, while the second solder pad and the third solder pad are relatively arranged on both sides of the top of the circuit board. This layout effectively utilizes the space of the circuit board and makes the entire SIM card holder structure more compact. On the basis of the first connection seat for the SIM card to be inserted, a second connection seat for the SIM card or T card to be inserted is provided. The stacked card holder structure enables the entire SIM card holder to increase the function of the card holder without increasing the plane space of the device. Users can freely combine and use different SIM cards and memory cards (one SIM card and one T card, or two SIM cards) as needed to meet a variety of usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention.

[0055] Figure 1 This is a stereoscopic diagram of a guide-rail type three-choice-two SIM card holder according to a preferred embodiment of the present invention.

[0056] Figure 2 It is a top view of a guide-rail type three-choice-two SIM card holder according to a preferred embodiment of the present invention.

[0057] Figure 3 This is an exploded view of a guide-rail type three-choice-two SIM card holder according to a preferred embodiment of the present invention.

[0058] Figure 4 A top view of a circuit board according to a preferred embodiment of the present invention.

[0059] Figure 5 This is a usage status diagram of the guide-rail type three-choice-two SIM card holder according to the preferred embodiment of the present invention.

[0060] Figure 6 It is a top view of the connection structure between the first connection socket and the circuit board according to a preferred embodiment of the present invention.

[0061] Figure 7 This is a distribution diagram of the first connecting terminals of a preferred embodiment of the present invention.

[0062] Figure 8 It is a top view of the first connecting socket of the preferred embodiment of the present invention.

[0063] Fig. 9 It is a top view of the connection structure between the second connection socket and the circuit board according to a preferred embodiment of the present invention.

[0064] Fig.10 It is a three-dimensional diagram of the connection structure between the second connection socket and the circuit board according to a preferred embodiment of the present invention.

[0065] Fig.11 FIG. 4 is a distribution diagram of the second connecting terminals and the third connecting terminals according to a preferred embodiment of the present invention.

[0066] Fig.12 It is a top view of the second card core of the preferred embodiment of the present invention.

[0067] Figure numerals: 1, circuit board; 11, first solder pad; 12, second solder pad; 13, third solder pad; 14, fourth solder pad; 2, first connection seat; 21, first card core; 211, first bottom plate; 2111, rectangular through hole; 2112, first spot welding hole; 212, first side wall; 2121, first slide groove; 213, first positioning protrusion; 214, first card slot; 215, first limit block; 22, take out the card steel sheet ; 221, fixed plate; 222, slide plate; 223, sinking plate; 224, pull plate; 225, pull protrusion; 226, limit plate; 23, first connecting terminal; 231, first fixing frame; 232, first spring piece; 233, first extension end; 234, first lead-out end; 235, welding protrusion; 3, second connecting seat; 31, second card core; 311, second bottom plate; 3111, second through hole; 3112, The third through hole; 3113, avoidance groove; 312, second side wall; 3121, second positioning groove; 3122, fourth positioning protrusion; 3123, third positioning protrusion; 313, second slot; 314, first positioning groove; 315, pin; 316, second limit block; 32, iron shell; 321, top plate; 3211, first disassembly hole; 3212, second disassembly hole; 322, third side wall; 3221, second positioning protrusion 3222, fourth positioning hole; 323, fourth solder foot; 324, fourth side wall; 3241, third positioning hole; 33, second connecting terminal; 331, second spring piece; 332, second extension end; 333, second lead-out end; 34, third connecting terminal; 341, third spring piece; 342, third extension end; 343, third lead-out end; 41, first SIM card; 42, T card; 43, second SIM card. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0069] In the figures, structurally similar elements are denoted by the same reference numerals.

[0070] The terms "first", "second", etc. in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be used as a limitation on the order of precedence.

[0071] Please refer to Figure 1 , Figure 2 and Figure 3 ,in Figure 1 This is a stereoscopic diagram of a guide-rail type three-choice-two SIM card holder according to a preferred embodiment of the present invention. Figure 2 It is a top view of a guide-rail type three-choice-two SIM card holder according to a preferred embodiment of the present invention. Figure 3 This is an exploded view of the guide rail type three-choice-two SIM card holder of the preferred embodiment of the present invention. The X-axis direction marked in the figure is the length direction, the Y-axis direction is the width direction, and the Z-axis is the upward direction.

[0072] The following is a preferred embodiment of a guide-rail type three-choice-two SIM card holder provided by the present invention that can solve the above technical problems.

[0073] The preferred embodiment of the guide rail type three-choice-two SIM card holder provided by the present invention is: a guide rail type three-choice-two SIM card holder comprises a circuit board 1, a first connection seat 2 and a second connection seat 3; wherein the circuit board 1 is provided with a first soldering pad 11, a second soldering pad 12 and a third soldering pad 13, and the first soldering pad 11, the second soldering pad 12 and the third soldering pad 13 are mainly used to connect the pins of the electronic components with the conductive tracks on the circuit board 1; the first connection seat 2 is arranged above the circuit board 1, and the first connection seat 2 is provided with a first card slot 214 for inserting a first SIM card 41, and the first connection seat 2 is provided with a first connection terminal 23, and the first connection terminal 23 and the first soldering pad 11 connection; the second connecting seat 3 is arranged above the second connecting seat 3, and the second connecting seat 3 is connected to the circuit board 1, the second connecting seat 3 is provided with a second card slot 313 for inserting the second SIM card 43 or the T card 42, and the second connecting seat 3 is provided with a second connecting terminal 33 and a third connecting terminal 34, the second connecting terminal 33 is connected to the second soldering pad 12, one end of the second connecting terminal 33 is connected to the T card 42, and the other end of the second connecting terminal 33 is connected to the second soldering pad 12; the third connecting terminal 34 is connected to the third soldering pad 13, one end of the third connecting terminal 34 is connected to the second SIM card 42, and the other end of the third connecting terminal 34 is connected to the third soldering pad 13.

[0074] The rail-type three-choose-two SIM card holder in this embodiment effectively utilizes the vertical space of the card holder through the first connection seat 2 and the second connection seat 3 arranged in a stacked manner, so that the dual card function can be integrated and assembled on the limited area of ​​the circuit board 1. The first pad 11 group is located on one side of the top of the circuit board 1, and the second pad 12 and the third pad 13 are relatively arranged on both sides of the top of the circuit board 1. This layout effectively utilizes the space of the circuit board 1, making the entire SIM card holder structure more compact. On the basis of inserting the first SIM card 41 into the first connection seat 2, a second connection seat 3 for inserting the second SIM card 43 or the T card 42 is provided. The stacked card holder structure enables the entire SIM card holder to increase the function of the card holder without increasing the plane space of the device. Users can freely combine and use different SIM cards and memory cards as needed to meet a variety of usage scenarios. The compact design not only meets the demand for lightness and thinness of modern electronic equipment, but also provides the flexibility of three-choose-two (one SIM card and one T card 42, or two SIM cards), which improves the practicality of the device.

[0075] The structure of the circuit board 1 in this embodiment is described in detail as follows:

[0076] Combination Figure 4 In this embodiment, there are several first pads 11, several first pads 11 are located at one end of the length direction of the circuit board 1, and several first pads 11 are arranged at intervals along the width direction of the circuit board 1; in this embodiment, there are 6 first pads 11. There are several second pads 12, several second pads 12 are arranged in two groups, and the two groups of second pads 12 are arranged at both ends of the width direction of the circuit board 1; in this embodiment, there are 8 second pads, and each group has 4 second pads 12. The third pad 13 is located on the side of the second pad 12 away from the first pad 11; there are several third pads 13, several third pads 13 are arranged in two groups, and the two groups of third pads 13 are arranged at both ends of the width direction of the circuit board 1, and in this embodiment, there are 6 second pads, and each group has 3 second pads 12. The first pad 11, the second pad 12 and the third pad 13 in this embodiment are arranged on the top peripheral side of the circuit board 1, which is convenient for the connection output between the circuit board 1 and the electronic components, and convenient for the inspection of the connection. At the same time, the middle area of ​​the circuit board 1 is relatively open, which is convenient for uniform heat dissipation of the circuit board 1 .

[0077] The structure of the first connecting socket 2 in this embodiment is described in detail as follows:

[0078] Combination Figure 3 , Figure 5 and Figure 6The first connection seat 2 includes a first card core 21, a card removal steel sheet 22 and a first connection terminal 23. The first card core 21 is located above the circuit board 1. The card removal steel sheet 22 is slidably connected to the top of the first card core 21. The first card slot 214 is located on the side of the card removal steel sheet 22 close to the first card core 21. The first connection terminal 23 is arranged on the first card core 21, and one end of the first connection terminal 23 extends into the first card slot 214. One end of the first connection terminal 23 is used to connect the first SIM card 41, and the other end of the first connection terminal 23 is connected to the first solder pad 11. The sliding mechanism of the card removal steel sheet 22 enables the user to easily remove the first SIM card 41, thereby improving the user experience.

[0079] A first slide groove 2121 is provided at the top of the first card core 21; the card-removing steel sheet 22 includes a fixed plate 221, a slide plate 222, a sinking plate 223 and a pulling plate 224; the fixed plate 221 is located between the first card core 21 and the second connecting seat 3, and the fixed plate 221 is used to limit the position of the top of the first SIM card 41; the slide plate 222 is connected to the width side of the fixed plate 221, the bottom end of the slide plate 222 extends downward, and the slide plate 222 is slidably connected to the first slide groove 2121, thereby realizing the sliding of the card-removing steel sheet 22; two groups of slide plates 222 are provided, and the two groups of slide plates 222 are relatively arranged on both sides of the width direction of the fixed plate 221. The sinking plate 223 is located at one end of the fixed plate 221 in the length direction, and the plane where the bottom surface of the sinking plate 223 is located is located below the plane where the bottom surface of the fixed plate 221 is located. The sinking plate 223 is used to limit the position of the first SIM card 41, and the sinking plate 223 is used to push the first SIM card 41 out of the first card slot 214; the pulling plate 224 is connected to the other end of the fixed plate 221 in the length direction, and the pulling plate 224 is used to pull the card-taking steel sheet 22, so that the card-taking steel sheet 22 drives the first SIM card 41 to be pulled out. A pulling protrusion 225 is provided at one end of the pulling plate 224 away from the sinking plate 223, so that the user can operate and pull the card-taking steel sheet 22.

[0080] The card removal steel sheet 22 in this embodiment slides along the length direction of the first card core 21; the fixing plate 221 is provided with limiting plates 226 on both sides along the width direction, and the first card core 21 is provided with first limiting blocks 215 at both ends along the length direction, and the limiting plates 226 are arranged between the two groups of first limiting blocks 215. The first limiting blocks 215 are used to limit the position of the limiting plates 226 to prevent the card removal steel sheet 22 from falling off during the sliding process, thereby ensuring the stability of the structure of the first connecting seat 2.

[0081] The structure of the first connecting terminal 23 in this embodiment is described as follows:

[0082] like Figure 7As shown, the first connection terminal 23 includes a first fixing frame 231, a first elastic sheet 232, a first extension end 233 and a first lead-out end 234; the first fixing frame 231 is connected to the first card core 21, the first elastic sheet 232 is arranged in the first fixing frame 231, the first elastic sheet 232 is used to contact the first SIM card 41, the first lead-out end 234 is located at one end in the length direction of the circuit board 1, the first lead-out end 234 is connected to the first soldering pad 11, and the first lead-out ends 234 of the first connection terminals 23 are arranged at intervals along the width direction of the first card core 21. The first extension end 233 is arranged in the first card core 21, and the first extension end 233 connects the first fixing frame 231 with the first lead-out end 234. This design enables the first connection terminal 23 to be firmly fixed on the first card core 21, and effectively contact the first SIM card 41 in the first card slot 214, ensuring stable signal transmission. At the same time, the connection between the first lead-out end 234 and the soldering pad makes the signal transmission more efficient.

[0083] The first fixing frames 231 of the plurality of first connecting terminals 23 in this embodiment are arranged in a rectangular array, thereby optimizing the spatial layout of the first chip.

[0084] Further, combined with Figure 8 The first connection terminal 23 further includes a welding protrusion 235, which is arranged outside the first fixing frame 231. The first card core 21 is provided with a first spot welding hole 2112, which corresponds to the position of the welding protrusion 235. The welding protrusion 235 is fixed to the hole wall of the first spot welding hole 2112 by welding. The welding and fixing of the welding protrusion 235 to the first spot welding hole 2112 further enhances the connection strength between the first connection terminal 23 and the first card core 21, and improves the stability of the overall structure.

[0085] The structure of the first card core 21 in this embodiment is described as follows:

[0086] Combination Figure 3 , Figure 6 and Figure 8 The first card core 21 is a rectangular structure, and the first card core 21 includes a first bottom plate 211 and a first side wall 212. Two groups of first side walls 212 are provided, and the two groups of first side walls 212 are relatively vertically arranged on opposite sides of the length direction of the first bottom plate 211, and the first card slot 214 for accommodating the first SIM card 41 is formed by the first bottom plate 211 and the two groups of first side walls 212. In this embodiment, the first slide groove 2121 is arranged on the first side wall 212. The first card core 21 can stably support the first SIM card 41 to prevent it from being deformed or damaged. At the same time, the arrangement of the two groups of first side walls 212 also limits the insertion direction of the first SIM card 41, thereby improving the accuracy of use.

[0087] The first bottom plate 211 is provided with two rows of rectangular through holes 2111 at a position directly below the first card slot 214, and each rectangular through hole 2111 passes through the first bottom plate 211 from top to bottom, and the first elastic piece 232 of a single first connection terminal 23 is correspondingly arranged in the single rectangular through hole 2111. Each rectangular through hole 2111 corresponds to a first elastic piece 232 of a first connection terminal 23, and this design enables each elastic piece to independently contact the first SIM card 41, thereby improving the accuracy and stability of signal transmission.

[0088] Furthermore, in this embodiment, first positioning protrusions 213 are provided on both sides of the first card core 21 in the width direction; first positioning grooves 314 are provided on both sides of the second connection seat 3 in the width direction, and the first positioning protrusions are engaged with the first positioning grooves 314. This enables the first card core 21 to be precisely docked with the second connection seat 3, improves the stability of the overall structure, and prevents the overall structure of the card seat from shaking and dislocation.

[0089] The structure of the second connecting socket 3 in this embodiment is described in detail as follows:

[0090] Combination Figure 3 , Figure 8 and Fig.10 The second connection seat 3 in this embodiment includes a second card core 31, an iron shell 32, a second connection terminal 33 and a third connection terminal 34; the second card core 31 is arranged above the first connection seat 2, and the second card core 31 covers the outer side of the first card core 21. The iron shell 32 is arranged on the outer side of the second card core 31, and the iron shell 32 covers the second card core 31. A second card slot 313 is arranged at the top of the second card core 31, and the second card slot 313 is used for inserting a second SIM card 43 or a T card 42, providing a flexible SIM card and T card 42 slot function, increasing the versatility and user convenience of the card seat. The iron shell 32 covers the second card core 31, enhancing the structural strength of the second connection seat 3, and protecting the internal components from external physical damage.

[0091] There are a plurality of second connection terminals 33, and two groups of the plurality of second connection terminals 33 are provided. The two groups of second connection terminals 33 are relatively arranged on both sides along the width direction of the second card core 31. One end of the second connection terminal 33 is located at one end of the length direction of the second card core 31, and one end of the second connection terminal 33 extends into the second card slot 313. One end of the second connection terminal 33 is used to connect the T card 42; the other end of the second connection terminal 33 extends along the width direction of the second card core 31, and the other end of the second connection terminal 33 is connected to the second soldering pad 12. The two groups of second connection terminals 33 are relatively arranged on both sides of the width direction of the second card core 31, which optimizes the spatial layout of the second connection seat 3.

[0092] There are several third connection terminals 34, and the several third connection terminals 34 are located on the other side of the second connection terminal 33 along the length direction of the second card core 31; there are several third connection terminals 34, and the several third connection terminals 34 are provided in two groups, and the two groups of third connection terminals 34 are relatively arranged on both sides along the width direction of the second card core 31. The third connection terminal 34 is arranged on the second card core 31, and one end of the third connection terminal 34 extends into the second card slot 313, one end of the third connection terminal 34 is used to connect the second SIM card 43, and the other end of the third connection terminal 34 extends in the width direction of the second card core 31, and the other end of the third connection terminal 34 is connected to the third soldering pad 13. The layout of the third connection terminal 34 optimizes the spatial layout of the connection between the card holder and the circuit board 1, improves the integration of the third connection terminal 34, and facilitates the welding of the second connection seat 3.

[0093] The structure of the second connecting terminal 33 in this embodiment is described in detail as follows:

[0094] Combination Fig.11 In this embodiment, the second connection terminal 33 includes a second spring piece 331, a second extension end 332 and a second lead-out end 333. The second spring piece 331 is arranged at one end of the second connection terminal 33. One end of the second spring piece 331 extends into the second card slot 313 along one side of the length direction of the second card core 31. The second spring piece 331 is used to connect the T card 42. The second spring pieces 331 of the plurality of second connection terminals 33 in each group are arranged at intervals along the width direction of the second card core 31. The second lead-out end 333 is located at the other end of the second connection terminal 33. The second lead-out end 333 is connected to the second solder pad 12. The second lead-out ends 333 of the plurality of second connection terminals 33 in each group are arranged at intervals along the length direction of the second card core 31. The second extension end 332 is arranged in the middle of the second connection terminal 33. The second extension end 332 connects the second spring piece 331 and the second lead-out end 333. The second spring piece 331 establishes elastic contact with the T card 42 to ensure the reliability of signal transmission; the second lead-out terminal 333 is connected to the second solder pad 12 to realize the transmission of the signal to the circuit board 1, and the setting of several second connection terminals 33 at intervals improves the convenience of welding and the stability of signal transmission.

[0095] The structure of the third connecting terminal 34 in this embodiment is described in detail as follows:

[0096] Combination Fig.11The third connection terminal 34 in this embodiment includes a third spring piece 341, a third extension end 342 and a third lead-out end 343; the third spring piece 341 is arranged at one end of the third connection terminal 34, and one end of the third spring piece 341 extends into the second card slot 313, and the third spring piece 341 is used to connect the second SIM card 43; the third spring pieces 341 of a plurality of third connection terminals 34 are distributed in a rectangular array. The third lead-out end 343 is arranged at the other end of the third connection terminal 34, and the third lead-out end 343 is connected to the third solder pad 13. The plurality of third connection terminals 34 include two groups arranged on both sides of the length direction of the second card core 31, and the third lead-out ends 343 of the plurality of third connection terminals 34 in each group are arranged at intervals along the length direction of the second card core 31. The third extension end 342 is located in the middle of the third connection terminal 34, and the third extension end 342 is arranged in the second card core 31, and the third extension end 342 connects the third spring piece 341 and the third lead-out end 343. The third connection terminal 34 supports the insertion and connection of the second SIM card 43, thereby increasing the versatility of the card socket.

[0097] The third spring piece 341 in this embodiment is a triangular structure, and the third spring piece 341 is provided with a vertex for contacting the second SIM card 43, and the third spring piece 341 is connected to the third extension end 342 on the side of the long side opposite to the vertex. The third spring piece 341 of the triangular structure provides good elastic contact, ensuring the stability of the connection of the second SIM card 43; the third lead-out end 343 is connected to the third pad 13, realizing the transmission of the second SIM card 43 signal to the circuit board 1.

[0098] The third extension end 342 in this embodiment can be a straight line structure, a folded line structure or a rectangular structure according to the setting space of the second card core 31. Flexible design according to space requirements ensures a stable connection between the third spring 341 and the third lead-out end 343, while improving the flexibility and practicality of the design.

[0099] The structure of the second card core 31 in this embodiment is described as follows:

[0100] Combination Figure 3 , Fig.10 and Fig.12 The second card core 31 is a rectangular plate-shaped structure, and includes a second bottom plate 311 and a second side wall 312. Two groups of second side walls 312 are provided, and the two groups of second side walls 312 are relatively vertically arranged on both sides of the width direction of the second bottom plate 311, and the second side walls 312 define the position of the second SIM card 43 or the T card 42. The second bottom plate 311 and the two groups of second side walls 312 together form a second card slot 313 for accommodating the second SIM card 43 and the T card 42.

[0101] The second bottom plate 311 is provided with a second through hole 3111 and two rows of third through holes 3112 at a position directly below the second slot 313. The second through hole 3111 is located at one end of the second bottom plate 311 in the length direction, and is a rectangular structure. The second through hole 3111 passes through the second bottom plate 311 from top to bottom, and the second spring pieces 331 of the second connection terminals 33 in each group are all located in the second through hole 3111.

[0102] The two rows of third through holes 3112 are located at the other end of the second bottom plate 311 in the length direction, and the cross-sectional shape of the third through holes 3112 is substantially the same as the cross-sectional shape of the third elastic pieces 341. Each third through hole 3112 passes through the second bottom plate 311 from top to bottom, and the third elastic piece 341 of a single third connection terminal 34 is correspondingly arranged in a single third through hole 3112. The second through hole 3111 and the third through hole 3112 provide precise positioning for the installation of the second connection terminal 33 and the third connection terminal 34, ensuring the stability of the connection and the accuracy of the signal.

[0103] In this embodiment, the second card core 31 further includes a plurality of pins 315, the plurality of pins 315 include a first pin and a plurality of second pins, the plurality of first pins correspond one-to-one with the second lead-out ends 333 of the plurality of second connection terminals 33, and the plurality of second pins correspond one-to-one with the third lead-out ends 343 of the plurality of third connection terminals 34. The one-to-one correspondence between the pins and the lead-out ends ensures that the electrical connection between the second SIM card 43 and the T card 42 and the circuit board 1 is more stable.

[0104] In this embodiment, first positioning protrusions 213 are further provided on both sides of the first card core 21 in the width direction; first positioning grooves 314 are provided on both sides of the second card core 31 along the width direction, and the first positioning protrusions 213 are engaged with the first positioning grooves 314, thereby improving the connection accuracy and stability between the first card core 21 and the second card core 31.

[0105] The second card core 31 of the present embodiment is provided with an avoidance groove 3113, which is located at the other side of the length direction of the second card core 31. The avoidance groove 3113 corresponds to the position of the pulling protrusion 225, which is convenient for extracting the card steel sheet 22 and improves the convenience of the user to take the card. The pulling protrusion 225 is arranged in the avoidance groove 3113, so that the overall structure of the card holder is more compact.

[0106] Furthermore, in this embodiment, the second card core 31 also includes a second limit block 316 , which is located in the second card slot 313 and connected to the second side wall 312 . The second limit block 316 is used to limit the position of the second SIM card 43 in the second card slot 313 .

[0107] The structure of the iron shell 32 in this embodiment is described as follows:

[0108] Combination Figure 1 and Figure 3 The iron shell 32 in this embodiment is covered on the second card core 31, which enhances the structural strength of the card seat and protects the internal components from external interference. The iron shell 32 includes a top plate 321, a third side wall 322, a fourth welding leg 323 and a fourth side wall 324. The top plate 321 is located above the second card core 31. The third side wall 322 is provided with two groups. The two groups of third side walls 322 extend downward relative to both sides of the width direction of the top plate 321. The fourth welding leg 323 is connected to the bottom end of the third side wall 322. There are a plurality of fourth welding legs 323, which are respectively located on both sides of the length direction of the third side wall 322, and the fourth welding leg 323 is located below the first card core 21 and the second card core 31. The top end of the fourth welding leg 323 covers the bottom end of the first card core 21 and the bottom end of the second card core 31. The bottom end of the fourth welding leg 323 is welded to the fourth pad 14 on the circuit board 1, thereby covering the first card core 21 and the second card core 31 inside, forming a stable external structure. The fourth side wall 324 is disposed at one side in the width direction of the second card core 31 . The fourth side wall 324 is used to limit the position of the T-clip 42 to prevent the T-clip 42 from moving or falling off.

[0109] The second core 31 is provided with second positioning grooves 3121 on both sides in the width direction, and the iron shell 32 is provided with second positioning protrusions 3221 on both sides in the width direction, and the second positioning protrusions 3221 are engaged with the second positioning grooves 3121. In this embodiment, the second positioning protrusions 3221 are located on the third side wall 322.

[0110] In this embodiment, a third positioning protrusion 3123 is provided at one end of the second card core 31 in the length direction, and a third positioning hole 3241 is provided on the fourth side wall 324. The third positioning protrusion 3123 is engaged with the third positioning hole 3241, thereby improving the connection accuracy and stability between the iron shell 32 and the second card core 31.

[0111] In this embodiment, the second card core 31 is provided with fourth positioning protrusions 3122 on both sides along the width direction, and the third side wall 322 is provided with fourth positioning holes 3222. The fourth positioning protrusions 3122 are engaged with the fourth positioning holes 3222, thereby improving the connection accuracy and stability between the iron shell 32 and the second card core 31.

[0112] Furthermore, the iron shell 32 is provided with a first disassembly hole 3211, the first disassembly hole 3211 is located on one side of the length direction of the iron shell 32, the first disassembly hole 3211 is located on one side of the length direction of the top plate 321, the first disassembly hole 3211 corresponds to the second card slot 313, and the first disassembly hole 3211 is used to remove the T card 42 in the second card slot 313. The iron shell 32 is provided with a second disassembly hole 3212, the second disassembly hole 3212 corresponds to the second card slot 313, the second disassembly hole 3212 is located on the other side of the length direction of the top plate 321, and the second disassembly hole 3212 is used to remove the second SIM card 43 in the second card slot 313. The iron shell 32 is provided with two disassembly holes, which is convenient for the user to remove the second SIM card 43 or the T card 42 without removing the entire card holder, thereby improving the convenience of use.

[0113] Working principle of the present invention:

[0114] 1. Fix the guide rail type three-choice-two SIM card holder (including the first card core 21, the second card core 31, the iron shell 32, the connection terminals and other components) of this preferred embodiment on the circuit board 1 by welding or other means. Ensure that each pad (such as the second pad 12, the third pad 13, the fourth solder leg 323, etc.) is firmly connected to the corresponding solder point on the circuit board 1.

[0115] 2. As required, the user inserts the first SIM card 41 into the first card slot 214 formed between the first card core 21 and the card removal steel sheet 22. When the first SIM card 41 is inserted, the first SIM card 41 triggers the first spring sheet 232 of the first connection terminal 23, so that it establishes elastic contact with the contact point on the first SIM card 41.

[0116] Insert the second SIM card 43 or T card 42 into the second card slot 313 formed between the second card core 31 and the iron shell 32. The design of the second card slot 313 ensures the secure insertion of the card and prevents the card from slipping or misalignment. When the second SIM card 43 or T card 42 is inserted, the T card 42 or the second SIM card 43 triggers the spring portion of the connection terminal (such as the second connection terminal 33 or the third connection terminal 34) to establish elastic contact with the contact on the card.

[0117] 3. When the first SIM card 41, T card 42 or second SIM card 43 is inserted and firmly connected, the springs of the connection terminals (including the first connection terminals 23, the second connection terminals 33 and the third connection terminals 34) are in close contact with the corresponding card contacts to form a conductive path.

[0118] The first connection terminal 23 transmits the signal of the first SIM card 41 to the first pad 11 , and then transmits the signal to the core components such as the processing chip through the circuit board 1 .

[0119] The second connection terminal 33 transmits the signal of the T card 42 to the second pad 12 , and then transmits it to the core components such as the processing chip through the circuit board 1 .

[0120] The third connection terminal 34 transmits the signal of the second SIM card 43 to the third pad 13 , which is also processed by the circuit board 1 .

[0121] 3. Card removal.

[0122] When the card needs to be removed, the user can remove the card from the card slot through external operations (using the card removal steel sheet 22, through the first removal hole 3211, and the second removal hole 3212).

[0123] During the card removal process, the spring of the connection terminal will automatically reset and wait for the next card insertion.

[0124] Working principle: The guide rail type three-choose-two SIM card holder of this preferred embodiment realizes the insertion, connection and signal transmission of the SIM card and the T card 42 based on the elastic contact principle. Through the ingenious design between the second card core 31 and the iron shell 32, a second card slot 313 that can simultaneously support the second SIM card 43 and the T card 42 is formed. This multi-card slot design allows users to flexibly choose to insert different types of cards as needed, thereby improving the compatibility and practicality of the device.

[0125] The first connection terminal 23, the second connection terminal 33 and the third connection terminal 34 (especially the spring portion of the connection terminal) are made of elastic material, which can automatically adapt to the shape and position of the card when the card is inserted, and establish a stable conductive connection with the card contact. This elastic contact not only ensures reliable signal transmission, but also provides sufficient protection during the card insertion and removal process to prevent the contact from being worn or damaged.

[0126] The entire SIM card holder adopts a modular design, and each component is connected to each other through precise positioning and fixing structures. This design not only simplifies the production and assembly process, but also facilitates subsequent maintenance and upgrades.

[0127] In this way, the working process of the guide rail type three-choice-two SIM card holder of the preferred embodiment is completed. In summary, although the present invention has been disclosed as above with the preferred embodiment, the above preferred embodiment is not used to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope defined by the claims.

Claims

1. A guide rail type three-choose-two SIM card holder, characterized in that: include: A circuit board, wherein the circuit board is provided with: A first solder pad, wherein the first solder pad is located at one side of the top end of the circuit board; The second solder pads are provided in two groups, and the two groups of the second solder pads are relatively arranged at two sides of the top of the circuit board; and The third solder pads are provided in two groups, and the two groups of the third solder pads are relatively arranged at two sides of the top of the circuit board; A first connection socket, arranged above the circuit board, the first connection socket is provided with a first SIM card slot and a first connection terminal, the first SIM card slot is used to place a first SIM card, one end of the first connection terminal is connected to the first SIM card, and the other end of the first connection terminal is connected to the first soldering pad; as well as The second connection socket is arranged above the first connection socket, and the second connection socket is connected to the circuit board. The second connection socket is provided with a second card slot for inserting a second SIM card or a T card. The second connection socket is provided with a second connection terminal and a third connection terminal. One end of the second connection terminal is connected to the T card, and the other end of the second connection terminal is connected to the second soldering pad; one end of the third connection terminal is connected to the second SIM card, and the other end of the third connection terminal is connected to the third soldering pad.

2. The guide rail type three-choice-two SIM card holder according to claim 1, characterized in that: There are a plurality of the first soldering pads, the plurality of the first soldering pads are located at one end of the length direction of the circuit board, and the plurality of the first soldering pads are spaced apart along the width direction of the circuit board; There are a plurality of second soldering pads, and the plurality of second soldering pads are arranged in two groups, and the two groups of second soldering pads are respectively arranged at two ends along the width direction of the circuit board; The third pad is located on the side of the second pad away from the first pad. There are a plurality of third pads, and the plurality of third pads are arranged in two groups. The two groups of third pads are respectively arranged at both ends along the width direction of the circuit board.

3. The guide rail type three-choose-two SIM card holder according to claim 2, characterized in that: The first connection base comprises: A first card core, located above the circuit board; A card taking steel sheet, slidably connected to the top of the first card core, for slidingly taking out the first SIM card; A first connecting terminal is arranged on the first card core, one end of which extends into the first card slot for contacting the first SIM card, and the other end of which is connected to the first solder pad; Wherein, the top of the first card core is provided with a first slide groove, and the card taking steel sheet comprises: A fixing plate, located between the first card core and the second connecting seat, and used to define the position of the top of the first SIM card; A slide plate is connected to the width direction side of the fixed plate, the bottom end of the slide plate extends downward, and the slide plate is slidably connected to the first slide groove, so as to realize the sliding of the card taking steel sheet; A sinking plate, located at one end of the fixed plate in the length direction, and the plane where the bottom surface of the sinking plate is located is located below the plane where the bottom surface of the fixed plate is located, the sinking plate is used to limit the position of the first SIM card, and the sinking plate is used to push the first SIM card out of the first card slot; and A pulling plate is connected to the other end of the fixed plate in the length direction, and the pulling plate is used to pull the card-taking steel sheet.

4. The guide rail type three-choice-two SIM card holder according to claim 3, characterized in that: The first connecting terminal comprises: A first fixing frame connected to the first card core; A first spring sheet, arranged in the first fixing frame, for contacting the SIM card; A first extension end is disposed in the first card core and connects the first fixing frame to the first lead-out end; A first lead-out terminal connected to a first pad on the circuit board; Wherein, a plurality of first fixing frames of the first connecting terminals are arranged in a rectangular array.

5. The guide rail type three-choice-two SIM card holder according to claim 4, characterized in that: The first connection terminal further includes a welding protrusion, and the welding protrusion is arranged on the peripheral side of the first fixing frame; The first clamp core is provided with a first spot welding hole, the first spot welding hole corresponds to the position of the welding protrusion, and the welding protrusion is fixed to the first spot welding hole by welding.

6. The guide rail type three-choice-two SIM card holder according to claim 2, characterized in that: The second connection base comprises: A second card core is arranged above the first connecting seat, a second card slot is arranged at the top of the second card core, and the second card slot is used for inserting a SIM card or a T card; An iron shell, covering the second card core, with two sides of the iron shell extending downward and welded to the circuit board; A second connecting terminal connected to the second card core, one end of the second connecting terminal extending into the second card slot for connecting to the T card, and the other end extending along the width direction of the second card core and connected to the second soldering pad; a plurality of second connecting terminals are provided, and the plurality of second connecting terminals are divided into two groups and are relatively arranged on both sides of the width direction of the second card core; and The third connecting terminal is connected to the second card core, and the third connecting terminal is located on the other side of the second connecting terminal along the length direction of the second card core. One end of the third connecting terminal extends into the second card slot, and one end of the third connecting terminal is used to connect the second SIM card. The other end of the third connecting terminal extends in the width direction of the second card core, and the other end of the third connecting terminal is connected to the third soldering pad.

7. The guide rail type three-choice-two SIM card holder according to claim 6, characterized in that: The second connecting terminal comprises: A second spring sheet is arranged at one end of the second connecting terminal, one end of the second spring sheet extends into the second card slot along one side of the length direction of the second card core, the second spring sheet is used to connect the T card, and the second spring sheets of several second connecting terminals in each group are arranged at intervals along the width direction of the second card core; A second lead-out end, located at the other end of the second connecting terminal, the second lead-out end is connected to the second solder pad, and the second lead-out ends of the plurality of second connecting terminals in each group are arranged at intervals along the length direction of the second card core; and The second extension end is arranged in the middle of the second connecting terminal, and the second extension end connects the second spring piece and the second lead-out end.

8. The guide rail type three-choice-two SIM card holder according to claim 6, characterized in that: The third connecting terminal comprises: A third elastic sheet, arranged at one end of the third connecting terminal, one end of the third elastic sheet extends into the second card slot, the third elastic sheet is used to connect the second SIM card, and the third elastic sheets of the third connecting terminals are distributed in a rectangular array; A third lead-out end is arranged at the other end of the third connecting terminal, the third lead-out end is connected to the third soldering pad, and the third lead-out ends of the third connecting terminals in each group are arranged at intervals along the length direction of the second card core; and The third extension end is located in the middle of the third connecting terminal. The third extension end is arranged in the second card core. The third extension end connects the third spring piece and the third lead-out end.

9. The guide rail type three-choice-two SIM card holder according to claim 6, characterized in that: The iron shell comprises: A top plate, located above the second card core; The third side walls are provided in two groups, and the two groups of the third side walls extend downwardly on both sides in the width direction of the top plate; a fourth side wall connected to one side of the top plate in the length direction, the fourth side wall being located at one side of the second card core in the length direction, and the fourth side wall being used to define the position of the T card; and The fourth solder pin is connected to the bottom end of the third side wall. There are a plurality of the fourth solder pins, which are respectively located on both sides of the length direction of the third side wall, and the fourth solder pin is located below the first card core and the second card core. The top end of the fourth solder pin covers the bottom end of the first card core and the bottom end of the second card core, and the bottom end of the fourth solder pin is welded to the circuit board.

10. The guide rail type three-choice-two SIM card holder according to claim 9, characterized in that: The top plate is provided with a first removal hole and a second removal hole corresponding to the second card slot, wherein the first removal hole is located at one side of the length direction of the top plate, and the first removal hole is used to remove the T card. The second removal hole is located at the other side of the top plate in the length direction, and the second removal hole is used to remove the second SIM card.

Images