CN217640237U

CN217640237U - Card reader with double USB interfaces

Info

Publication number: CN217640237U
Application number: CN202220565032.6U
Authority: CN
Inventors: 柳灏
Original assignee: Shenzhen Ruiwei Technology Co ltd
Current assignee: Shenzhen Ruiwei Technology Co ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-10-21
Anticipated expiration: 2032-03-15

Abstract

The utility model relates to a computer peripheral equipment technical field, the unstable technical problem of mounting structure in order to solve current card reader, the utility model discloses a card reader of two USB interfaces, including mesochite and end cover, the mesochite contains the circuit board, the USB interface is installed respectively at the both ends of circuit board, the USB interface is equipped with the sheath with the connecting portion cover of circuit board, the cassette is installed respectively to the upper and lower face of circuit board, lower cassette, set up respectively with last cassette in the side of mesochite, the last card slot that lower cassette corresponds, card slot down, the medial surface of mesochite is provided with the first double-layered groove that two horizontal sand grips constitute, first double-layered groove is used for the side of centre gripping circuit board, the inner of sheath is provided with the second and presss from both sides the groove, the second presss from both sides the groove and is used for the end about the centre gripping circuit board, the sheath is provided with respectively with the mesochite, the first buckle structure of end cover joint, second buckle structure, it is strong to have compatibility, high durability and convenient use, stable in structure and low-cost's advantage.

Description

Card reader with double USB interfaces

Technical Field

The utility model relates to a computer peripheral hardware technical field especially relates to a card reader of two USB interfaces.

Background

The conventional card reader such as a U disk or a card reader is only provided with a Type-A interface and is used for being connected with a computer, the technical updating of digital products such as a mobile phone and a flat panel is accelerated, the functions are increasingly rich, and the conventional card reader is mainly characterized in that the mobile phone with the Type-C interface can be connected with an external memory, and files can be easily read and stored in the digital products such as the mobile phone and the flat panel through the external memory. However, the existing card reader can be basically connected with a Type-a interface of a computer only, and cannot be simultaneously compatible with digital products such as a mobile phone and a flat panel; the mounting structure of the card reader is now not stable enough, for example, it is easy to crack when dropped.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a card reader of two USB interfaces to the unstable technical problem of mounting structure who solves current card reader.

In order to achieve the above object, the utility model discloses a specific technical scheme as follows of card reader of two USB interfaces:

the utility model provides a card reader of two USB interfaces, including mesochite and the end cover that is located the mesochite both ends, the circuit board has been held to the mesochite, the USB interface is installed respectively at the both ends of circuit board, the connecting portion cover of USB interface and circuit board is equipped with the sheath, the upper and lower face of circuit board is installed respectively and is gone up the cassette, lower cassette, the side of mesochite is seted up respectively with last cassette, the last card slot that corresponds of lower cassette, card slot down, the medial surface of mesochite is provided with the first double-layered groove that constitutes of two horizontal sand grips, first double-layered groove is used for the side of centre gripping circuit board, the inner of sheath is provided with the second and presss from both sides the groove, the second presss from both sides the groove and is used for the end about the centre gripping circuit board, the sheath is provided with the mesochite respectively, the first buckle structure of end cover joint, second buckle structure.

The card reader with double USB interfaces can be connected with a computer to transmit files, and can also be connected with digital equipment such as a mobile phone, a tablet and the like to transmit files, so that the compatibility is strong, and the use is more convenient; the side joint of circuit board is in the first double-layered inslot of mesochite, and the both ends joint of circuit board is in the sheath, and stable in structure owing to do not use the screw to save the cost, and it is more convenient to constitute and dismantle, the cost is reduced simultaneously.

Further, first buckle structure is including setting up at the buckle groove of the tip medial surface of mesochite, setting at the card platform of sheath lateral surface.

Furthermore, a first guide inclined plane is arranged at the position adjacent to the buckling groove, and a second guide inclined plane is arranged at the position adjacent to the clamping table.

Further, the second buckle structure includes the card strip that sets up at the end cover medial surface, sets up the recess at the sheath lateral surface.

Furthermore, a fin plate used for clamping the USB interface is arranged on the periphery of the inner side face of the end cover.

Furthermore, the USB interface comprises a left USB interface and a right USB interface, the left USB interface is of a Type-C or Micro-B Type, and the right USB interface is of a Type-A Type.

Furthermore, the upper card seat is an SD card seat, and the lower card seat is a TF card seat.

The utility model provides a pair of card reader of two USB interfaces has following advantage:

Drawings

Fig. 1 is a perspective view of a card reader with dual USB interfaces provided by the present invention;

fig. 2 is a first view direction decomposition structure diagram of the card reader with dual USB interfaces provided by the present invention;

FIG. 3 is a second exploded view of the card reader with dual USB interfaces according to the present invention;

FIG. 4 is a diagram of a structure of the middle shell;

FIG. 5 is a diagram of a sheath structure according to the present invention;

FIG. 6 is a structural diagram of a card seat provided by the present invention;

fig. 7 is a circuit structure diagram of the USB interface provided by the present invention;

fig. 8 is a current protection circuit provided by the present invention.

In the figure: 10. a middle shell; 20. a left end cap; 30. a right end cap; 40. a circuit board; 11. an upper card slot; 12. a lower card slot; 13. a first clamping groove; 14. a buckling groove; 15. a first guide slope; 21. a left USB interface; 22. a left sheath; 31. a right USB interface; 32. a right sheath; 41. an upper clamping seat; 42. a lower clamping seat; 51. a clamping table; 52. a groove; 53. clamping the strip; 54. a fin plate; 55. a second clamping groove; 56. a second guide slope; u1, card reading controller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 5, the utility model provides a card reader of two USB interfaces, including mesochite 10 and the end cover that is located mesochite 10 both ends, circuit board 40 has been held in mesochite 10, the USB interface is installed respectively at the both ends of circuit board 40, the connecting portion cover of USB interface and circuit board 40 is equipped with the sheath, cassette 41 is installed respectively to the upper and lower face of circuit board 40, lower cassette 42, the side of mesochite 10 has been seted up respectively with last cassette 41, lower cassette 42 corresponds last card slot 11, card slot 12 down, the medial surface of mesochite 10 is provided with the first double-layered groove 13 that two horizontal sand grips constitute, first double-layered groove 13 is used for the side of centre gripping circuit board 40, the inner of sheath is provided with second double-layered groove 55, second double-layered groove 55 is used for the left and right sides end of centre gripping circuit board 40, the sheath is provided with respectively with mesochite 10, the first buckle structure of end cover joint, the second buckle structure.

The end cover comprises a left end cover 20 and a right end cover 30, the sheath comprises a left sheath 22 and a right sheath 32 which are buckled in, the left end cover 20 is connected with the left sheath 22, and the right end cover 30 is connected with the right sheath 32.

The card reader with double USB interfaces can be connected with a computer to transmit files, and can also be connected with digital equipment such as a mobile phone, a tablet and the like to transmit files, so that the compatibility is strong, and the use is more convenient; the side joint of circuit board 40 is in the first double-layered inslot 13 of mesochite 10, and the joint in the sheath in the both ends of circuit board 40, and stable in structure owing to do not use the screw to save the cost, and it is more convenient to constitute and dismantle, the cost is reduced simultaneously.

In one embodiment, the first snap structure includes a snap groove 14 disposed on an inner side of an end of the middle shell 10, and a snap platform 51 disposed on an outer side of the sheath.

In one embodiment, a first guide slope 15 is provided adjacent to the snap groove 14, and a second guide slope 56 is provided adjacent to the catch 51.

In one embodiment, the second snap structure includes a snap strip 53 disposed on the inner side of the end cap, and a groove 52 disposed on the outer side of the sheath.

In one embodiment, fins 54 for engaging the USB port are disposed around the inner side of the end cap.

In one embodiment, the USB interfaces include a left USB interface 21 and a right USB interface 31, the left USB interface 21 is of Type-C or Micro-B Type, and the right USB interface 31 is of Type-a Type.

In one embodiment, the upper socket 41 is an SD socket, and the lower socket 42 is a TF socket.

Referring to fig. 6 and 7, the CARD reading controller U1 is electrically connected to the upper CARD socket 41 (CARD 1 in fig. 6) and the lower CARD socket 42 (CARD 2 in fig. 6), respectively, and the USB bus D +/D-of the CARD reading controller U1 is electrically connected to the left USB interface 21 (Type-C in fig. 7) and the right USB interface 31 (Type-a in fig. 7).

The right USB interface 31 is mainly used for connecting with a computer, and when the right USB interface 31 is plugged in, especially when the plugging speed is fast, a large inrush current may be generated, which may cause damage to the subsequent circuit. Therefore, the power supply end in the right USB interface 31 is connected in series with a self-recovery fuse F2, which plays a role in protecting during overload and short circuit. For example, when the circuit current is too large, the fuse is disconnected, and after the circuit current returns to normal, the fuse returns to enter a low-resistance state to conduct the circuit, so that the circuit is normally powered on.

The self-healing fuse F2, while it may protect, reacts at a slower rate. Therefore, the current protection circuit with higher switching speed is arranged, and comprises an NPN type triode Q2 and a triode Q3, wherein a collector of the triode Q2 is used for inputting a 5V power supply, a base of the triode Q2 is connected with a pull-up resistor R3, an emitter of the triode Q2 is grounded through a resistor R4, and an emitter of the triode Q2 is used for outputting the 5V power supply; the base electrode of the triode Q3 is connected with the emitting electrode of the triode Q2, the emitting electrode of the triode Q3 is grounded, and the collecting electrode of the triode Q3 is connected with the base electrode of the triode Q2. When the current is too large, the divided voltage of the resistor R4 is increased, so that the triode Q3 is conducted, the base voltage of the triode Q2 is grounded, the triode Q2 is cut off, the power supply is interrupted, and the protection effect is achieved.

In order to further release transient current and static electricity, the input of the 5V power supply is connected with a TVS tube D1, so that a better protection effect is achieved, and the card reader can normally work in a complex environment.

To sum up, the utility model provides a card reader with double USB interfaces, which can be connected with a computer for file transmission, and can also be connected with digital equipment such as mobile phones and tablets for file transmission, so that the compatibility is strong and the use is more convenient; the side joint of circuit board is in the first double-layered inslot of mesochite, and the both ends joint of circuit board is in the sheath, and stable in structure owing to do not use the screw to save the cost, and it is more convenient to constitute and dismantle, the cost is reduced simultaneously. In addition, the card reader with double USB interfaces can adapt to a complex environment, the failure rate is reduced, and normal use is realized.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The card reader with the double USB interfaces comprises a middle shell (10) and end covers positioned at two ends of the middle shell (10), wherein a circuit board (40) is arranged in the middle shell (10), the two ends of the circuit board (40) are respectively provided with a USB interface, a protective sleeve is sleeved on a connecting portion between the USB interface and the circuit board (40), the card reader is characterized in that an upper card holder (41) and a lower card holder (42) are respectively arranged on the upper surface and the lower surface of the circuit board (40), an upper card slot (11) and a lower card slot (12) corresponding to the upper card holder (41) and the lower card holder (42) are respectively arranged on the side surface of the middle shell (10), a first clamping slot (13) formed by two horizontal convex strips is arranged on the inner side surface of the middle shell (10), the first clamping slot (13) is used for clamping the side end of the circuit board (40), a second clamping slot (55) is arranged at the inner end of the protective sleeve and the left end and the right end of the circuit board (40), the protective sleeve is respectively provided with a first clamping structure and a second clamping structure, the first clamping slot (51) and the inner side surface of the protective sleeve is arranged on the middle shell (10) and the end of the protective sleeve, and the second clamping slot (14).

2. The card reader with double USB interfaces as claimed in claim 1, wherein a first guiding slope (15) is provided adjacent to the fastening slot (14), and a second guiding slope (56) is provided adjacent to the card table (51).

3. The card reader with double USB interfaces as claimed in claim 1, wherein the second snap structure comprises a card strip (53) disposed on the inner side of the end cap, and a groove (52) disposed on the outer side of the sheath.

4. The card reader with double USB interfaces as claimed in claim 3, wherein the inner side of the end cap is provided with fins (54) for clamping the USB interface.

5. The card reader with double USB interfaces as claimed in claim 4, wherein the USB interfaces comprise a left USB interface (21) and a right USB interface (31), the left USB interface (21) is of Type-C or Micro-B, and the right USB interface (31) is of Type-A.

6. The card reader with dual USB interfaces as claimed in any one of claims 1 to 5, wherein the upper card socket (41) is an SD card socket, and the lower card socket (42) is a TF card socket.