CN212909070U

CN212909070U - Vehicle-mounted USB charger

Info

Publication number: CN212909070U
Application number: CN202022283574.8U
Authority: CN
Inventors: 卢亦峥
Original assignee: Guoguang Group Yueqing Hongfa Electronics Co ltd
Current assignee: Guoguang Group Yueqing Hongfa Electronics Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-04-06
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses a vehicle-mounted USB charger, which is characterized by comprising a box-shaped charger shell with an opening at the rear end, a matching opening is provided with a charger rear cover with a clamping hook which can be detachably arranged, the inner side wall of the charger shell is provided with a chute, the chute is used for installing a voltage reduction circuit board assembly, the front end of the voltage reduction circuit board assembly is provided with a USB socket, the rear end of the voltage reduction circuit board assembly is provided with an input terminal, the side surface of the charger shell corresponding to the USB socket is provided with a through groove A, the inner side surface of the charger rear cover after being fixed supports against the voltage reduction circuit board assembly and is provided with a through groove B, and the side surface; compared with the prior art, the utility model discloses a box-like charger shell inner wall sets up lid behind the charger that the spout combines the block, realizes the convenient screwless installation of circuit board, and the elasticity fixture block of charger shell both sides realizes that the mounting hole that only needs to correspond the charger and push into the car can fixed connection, simple to operate, whole module is small.

Description

Vehicle-mounted USB charger

Technical Field

The utility model relates to an mobile unit technical field, concretely relates to on-vehicle USB charger.

Background

The battery capacity of the handheld terminal is larger and larger, and the charging time is expected to be shorter and shorter, so that the charging current is required to be larger and larger. At present, the IPAD charging current requirement of an apple is 2.4A, while the charging current of a vehicle-mounted charging port is basically 0.5A or 1A and is lower than the charging requirement of a handheld device. Since mobile phones are basically used, single-port charging is difficult to meet the current requirements, and the packaging of the module is required to be as small as possible for users.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a security performance height satisfies customer's demand and project organization is reasonable, need not the inseparable on-vehicle USB charger of screw locking installation internal assembly.

The scheme of the utility model is as follows: a vehicle-mounted USB charger is characterized by comprising a charger shell, wherein the charger shell is box-shaped, an opening is formed in the rear end of the charger shell, a charger rear cover for sealing is arranged in a matching mode with the opening, a plurality of clamping hooks are arranged on the charger rear cover, clamping grooves which are matched with the clamping hooks to detachably fix the charger rear cover and the charger rear cover, two sliding grooves are formed in the inner side of the charger shell, a voltage reduction circuit board assembly is fixedly installed along the sliding grooves in an inserting mode from the opening direction, a USB socket is arranged at the front end of the voltage reduction circuit board assembly, an input terminal is arranged at the rear end of the voltage reduction circuit board assembly, a through groove A is formed in the side face, corresponding to the USB socket, of the charger rear cover after the clamping hooks are fixedly matched with the clamping grooves, the inner side face of the charger rear cover abuts against the voltage reduction circuit board, and the side surface of the charger shell is also provided with an elastic clamping block which is used for being clamped with a mounting port of the vehicle-mounted USB charger.

As a further arrangement of the scheme, the through groove A is provided with a groove, the groove is provided with a plurality of openings, the groove is also correspondingly provided with a rubber dustproof cover, and a plurality of bulges which are correspondingly clamped with the openings are arranged on the rubber dustproof cover.

As a further arrangement of the above scheme, the front end of the step-down circuit board assembly is provided with an inclined plane.

As a further arrangement of the scheme, an embedding groove is further formed in the inner side wall of the front end of the charger shell, and the front end of the voltage reduction circuit board assembly is clamped with the embedding groove.

As a further arrangement of the scheme, the charger shell is provided with a mark for indicating the USB socket and indicating the opening direction of the rubber dustproof cover through a silk-screen technology.

According to the scheme, the input voltage of the voltage reduction circuit board assembly is 9-16V, the output voltage of the voltage reduction circuit board assembly is 4.75-5.25V, the maximum current of the voltage reduction circuit board assembly is 2.4A, the voltage reduction circuit board assembly is further provided with an overcurrent protection circuit, an overvoltage protection circuit and a short-circuit protection circuit, the overcurrent protection circuit and the overvoltage protection circuit are connected with the input end of a vehicle-mounted power supply, and the working state of the voltage reduction circuit board assembly is limited by the overtemper.

Compared with the prior art, the utility model, following outstanding advantage has: the utility model discloses a box-like charger shell inner wall sets up lid behind the charger that the spout combines the block, realizes the convenient screwless installation of circuit board, and the elasticity fixture block of charger shell both sides realizes that the mounting hole that only need correspond the propelling movement car with the charger can fixed connection, simple to operate, and whole module is small.

Drawings

Fig. 1 is a schematic structural diagram of a charger of the present invention;

fig. 2 is a schematic structural view of the rear cover of the charger of the present invention;

fig. 3 is a schematic view of the front end of the charger of the present invention;

fig. 4 is a schematic view of a side view of the charger of the present invention;

fig. 5 is a schematic view of the voltage-reducing circuit board assembly of the present invention after installation;

fig. 6 is a schematic rear view of the present invention;

FIG. 7 is a schematic view of the step-down circuit board assembly of the present invention;

fig. 8 is a schematic diagram of the circuit structure of the voltage-reducing circuit board assembly of the present invention.

Reference numerals: 1. a charger housing; 11. an opening; 12. a chute; 14. an elastic clamping block; 2. a charger rear cover; 21. a hook is clamped; 3. a step-down circuit board assembly; 31. a USB socket; 311. a through groove A; 312. a groove; 313. opening a hole; 314. a protrusion; 32. an input terminal; 321. a through groove B; 4. rubber dust cap.

Detailed Description

The following detailed description of the embodiments of the present invention is provided for explaining the present invention, and the examples are not intended to limit the present invention, and the embodiments do not indicate specific techniques or conditions, and are performed according to the techniques or conditions described in the literature in the field or according to the product specification, and the apparatuses used are not indicated, and are all conventional products available on the market.

As shown in fig. 1-8, an on-vehicle USB charger is characterized by comprising a charger housing 1, wherein the charger housing 1 is box-shaped and has an opening 11 at the rear end, the opening 11 is provided with a rear charger cover 2 for sealing, the rear charger cover 2 is provided with a plurality of clamping hooks 21, the charger housing 1 is provided with a clamping groove 22 which is matched with the clamping hooks 21 to detachably fix the charger housing 1, the inner side of the charger housing 1 is provided with two sliding grooves 12, the charger further comprises a voltage-reducing circuit board assembly 3 which is inserted and installed and fixed along the sliding grooves 12 from the opening 11, the front end of the voltage-reducing circuit board assembly 3 is provided with a USB socket 31, the rear end of the voltage-reducing circuit board assembly is provided with an input terminal 32, the side of the charger housing 1 corresponding to the USB socket 31 is provided with a through groove a311, the inner side of the rear charger cover 2 is supported on the voltage-reducing circuit board assembly 3 after the clamping hooks 21 A through groove B321 is opened on the side surface corresponding to the input terminal 32, and an elastic fixture block 14 for being clamped with the mounting port of the vehicle-mounted USB charger is further arranged on the side surface of the charger housing 1.

As a further arrangement of the above scheme, the through groove a311 is provided with a groove 312, the groove 312 is provided with a plurality of openings 313, the groove 312 is further correspondingly provided with a rubber dust cover 4, and the rubber dust cover 4 is provided with a plurality of protrusions 314 correspondingly engaged with the openings 313.

As a further arrangement of the above scheme, the front end of the step-down circuit board assembly 3 is provided with an inclined surface.

As a further arrangement of the above scheme, an embedding groove is further formed in the inner side wall of the front end of the charger housing 1, and the front end of the voltage reduction circuit board assembly 3 is clamped with the embedding groove.

As a further arrangement of the above scheme, the charger housing 1 is provided with a mark for indicating the USB socket 31 and indicating the opening direction of the rubber dust cap 4 by using a silk-screen printing technique.

As a further arrangement of the above scheme, the input voltage of the step-down circuit board assembly 3 is 9-16V, the output voltage is 4.75-5.25V, and the maximum current is 2.4A, and the step-down circuit board assembly is further provided with an overcurrent protection circuit, an overvoltage protection circuit connected with the input end of the vehicle-mounted power supply, and an overtemperature protection circuit and a short-circuit protection circuit for limiting the working state.

The utility model discloses a charger passes through behind the box-like open-ended charger shell installation step-down circuit board again by can dismantle fixedly with the lid behind the charger that the opening matches, it is fixed mode adopts and cover behind the charger and set up elastic block collude and collude the block groove that matches set up on charger shell with the block and carry out detachable elasticity block between the two in the block groove that sets up, convenient installation, and be provided with the spout on the charger shell inside wall, be provided with the caulking groove on the front end inner wall, the fixed step-down circuit board of four directions that compresses tightly of lid behind both cooperation block charger shell's the charger, be provided with USB socket and input terminal on the step-down circuit board, it has seted up logical groove A and logical groove B in order to supply to peg graft to correspond to cover behind charger shell and charger, still be provided with the USB socket that exposes in the external world when rubber shield protection is used on logical groove A, the utility model discloses the charger only need be connected The opening that should push make the elasticity fixture block of side and the reservation mounting groove phase-match block of car can easy to assemble, and the charger is whole and need not the screw with the installation of car and pass through no matter production of elasticity block, and the installation is all very convenient, and is small based on the whole charger module of its block structure.

The above description should not be considered as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The vehicle-mounted USB charger is characterized by comprising a charger shell (1), wherein the charger shell (1) is box-shaped, an opening (11) is formed in the rear end of the charger shell, a charger rear cover (2) used for sealing is arranged on the opening (11) in a matched mode, a plurality of clamping hooks (21) are arranged on the charger rear cover (2), clamping grooves (22) matched with the clamping hooks (21) to realize detachable fixation of the charger shell and the charger rear cover are formed in the charger shell (1), two sliding grooves (12) are formed in the inner side of the charger shell (1), a voltage reduction circuit board assembly (3) is fixedly installed along the sliding grooves (12) in an inserting mode from the direction of the opening (11), a USB socket (31) is arranged at the front end of the voltage reduction circuit board assembly (3), an input terminal (32) is arranged at the rear end of the voltage reduction circuit board assembly, a through groove A (311) is formed in the side, the charger rear cover (2) is matched and fixed with the clamping groove (22) at the clamping hook (21) and then the inner side surface of the charger rear cover is abutted against the voltage reduction circuit board assembly (3), the charger rear cover (2) is provided with a through groove B (321) on the side surface corresponding to the input terminal (32), and the side surface of the charger shell (1) is also provided with an elastic clamping block (14) used for being clamped with a mounting port of a vehicle-mounted USB charger.

2. The vehicle-mounted USB charger according to claim 1, wherein the through slot A (311) is provided with a groove (312), the groove (312) is provided with a plurality of openings (313), the groove (312) is further correspondingly provided with a rubber dust cover (4), and the rubber dust cover (4) is provided with a plurality of protrusions (314) correspondingly engaged with the openings (313).

3. The vehicle-mounted USB charger according to claim 1, wherein the voltage-reducing circuit board assembly (3) is provided with a bevel at the front end.

4. The vehicle-mounted USB charger according to claim 1, wherein a caulking groove is further formed on an inner side wall of the front end of the charger housing (1), and the front end of the voltage-reducing circuit board assembly (3) is clamped with the caulking groove.

5. The vehicle-mounted USB charger according to claim 2, wherein the charger housing (1) is provided with a mark for indicating the USB socket (31) and indicating the opening direction of the rubber dust cap (4) by silk-screen printing technology.

6. The vehicle-mounted USB charger according to claim 1, wherein the step-down circuit board assembly (3) has an input voltage of 9-16V, an output voltage of 4.75-5.25V and a maximum output current of 2.4A, and is further provided with an overcurrent protection circuit, an overvoltage protection circuit and an over-temperature protection circuit, wherein the overcurrent protection circuit and the short-circuit protection circuit are connected with the input end of the vehicle-mounted power supply, and the over-temperature protection circuit and the short-circuit protection circuit are arranged to limit the working state.