CN206302173U - A kind of vehicle-mounted USB charger - Google Patents

Abstract

The utility model discloses a kind of vehicle-mounted USB charger, a kind of vehicle-mounted USB charger, including：Jack body, is arranged on the PCB charging assemblies in jack body, the USB charging sockets being connected with pcb board circuit unit and with the output end of the pcb board circuit unit；Positive contact end, is connected to the open end of described first；Electrode line, including the first wire and resilient second wire of tool；Wherein, one end connection positive contact piece of the first wire and the second wire, the other end connects the electrode input end of the pcb board circuit unit；The positive contact piece be laminated structure and with the inner face at the positive contact end；When positive contact end is connected with first, second wire is in elastic compression.The technical program realizes the bump contact at positive contact end, reduces contact resistance, and increase passes through electric current.

Description

A kind of vehicle-mounted USB charger

Technical field

The utility model is related to charger technologies field, especially a kind of vehicle-mounted USB charger.

Background technology

Onboard charger is that car owner's vehicle power is whenever and wherever possible the accessory that digital product charges for convenience, is used When, one end of onboard charger need to be only inserted in the jack of automobile cigarette lighter, it is possible to charged to digital product.With vapour Car industrial expansion, onboard charger is widely used, and shows the feature of multifunctionality, portability, fashion.

Existing vehicle-mounted USB charger is by a spring for conductive energy mostly and is used as positive contact.Using When its contact resistance it is excessive, input current is too small.

Above mentioned problem needs to solve.

Utility model content

In order to overcome the deficiencies in the prior art, the utility model proposes a kind of vehicle-mounted USB charger, it is therefore an objective to improve positive pole Contact performance, reduces contact resistance, increases electric current.

In order to solve above-mentioned technical problem, the utility model proposes basic technical scheme be：A kind of vehicle-mounted USB charges Device, including：

Jack body, with first and second, wherein external diameter of the external diameter of first less than second；

Be arranged on the PCB charging assemblies in jack body, with pcb board circuit unit and with the pcb board circuit unit The USB charging sockets of output end connection；

Positive contact end, is connected to the open end of described first；

Cathode contact end, with elasticity, and exposes to and is arranged on the first through hole of described first opposite both sides and is used for With vehicle-mounted charge base engagement；And

Electrode line, including the first wire and resilient second wire of tool；

Wherein, one end connection positive contact piece of the first wire, the positive pole that the other end connects the pcb board circuit unit is defeated Enter end；One end connection positive contact piece of the second wire, the other end connects the electrode input end of the pcb board circuit unit；Institute State positive contact piece for laminated structure and with the inner face at the positive contact end；When positive contact end is connected with first, Second wire is in elastic compression.

Further, second wire is helicoidal structure, and first wire is socketed in inside it.

Further, the inner face at the positive contact end is the arc-shaped for caving inward, the positive contact piece and institute The surface for stating the inner face contact at positive contact end is the arc structure with the inner face form fit.

Further, the open end of the positive contact end with described first is threaded togather.

Further, the taper structure of the profile of the part of positive contact end and vehicle-mounted charge base engagement.

Further, the open end card of second is baffled, and the baffle plate has the port cooperation with the USB charging sockets The second through hole.

The beneficial effects of the utility model are：

The electrode line of the technical solution of the utility model, including the first wire and resilient second wire of tool, this first The electrode input end of wire and the second wire sets positive contact piece, and the bump contact at positive contact end is realized with this, reduces Contact resistance, increase meets use requirement by electric current.

Brief description of the drawings

Fig. 1 is a kind of contour structures schematic diagram of vehicle-mounted USB charger of the present utility model；

Fig. 2 is the structural representation of electrode line.

Specific embodiment

The utility model is described further below with reference to accompanying drawing 1 to accompanying drawing 2, but this reality should not be limited with this With new protection domain.

A kind of vehicle-mounted USB charger, including：Jack body 100, with first 101 and second 102, wherein first External diameter 102 of the external diameter in portion 101 less than second；The PCB charging assemblies in jack body 100 are arranged on, with pcb board circuit Component 201 and the USB charging sockets 203 being connected with the output end of the pcb board circuit unit 201；Positive contact end 300, connection In the open end of described first 101；Cathode contact end 400, with elasticity, and exposes to and is arranged on described first 101 The first through hole 1011 of opposite both sides is used for and vehicle-mounted charge base engagement；And electrode line 700, including the He of the first wire 701 Has resilient second wire 702；Wherein, one end of the first wire 701 connects positive contact piece 500, and other end connection is described The electrode input end of pcb board circuit unit 201；One end of second wire 402 connects positive contact piece 500, other end connection institute State the electrode input end of pcb board circuit unit 201；The positive contact piece 500 be laminated structure and with the positive contact end 300 inner face；When positive contact end 300 is connected with first 101, second wire 702 is in elastic compression.

The technical solution of the utility model, its core is to set first between electrode input end and PCB charging assemblies to lead Line and the second wire, and the second wire has elasticity, are first wire and the in compressive state during use The positive pole input connection positive contact piece of two wires, is contacted by positive contact piece with electrode input end, increases contact area, Contact resistance is reduced, is increased and is passed through electric current.

Specifically, second wire 702 is helicoidal structure, and first wire 701 is socketed in inside it, By two settings of wire, resistance can be reduced to a certain extent, and can more preferably realize positive contact piece 500 and lead The connection of line, the use of the second wire 702 also includes that the inner face of positive contact piece 500 and positive contact end 300 can be forced Preferably contact.In order to further ensure good contact, the inner face at the positive contact end 300 caves inward Arc-shaped, the surface that the corresponding positive contact piece 500 is contacted with the inner face at the positive contact end 300 is and the inner The arc structure of face form fit.Such benefit is preferably realize positive contact end 300 and positive contact piece 500 tight Closely connected conjunction.In this technology feature, core is to ensure that positive contact end 300 and positive contact piece 500 are contacted for face, above-mentioned setting For arc structure is one of which embodiment, when specifically used, as long as ensureing to be contacted for face, it can be used His any form of shape.

In addition, the open end of the positive contact end 300 with described first 101 is threaded togather, specifically even When connecing, positive contact end 300 and the contact portion of first 101 must be insulation.Therefore, it can in the positive contact Setting insulating part at 300 is held, is threaded togather with first 101 by insulating part.Further, positive contact end 300 With the taper structure of the profile of the part of vehicle-mounted charge base engagement, it is able to conveniently realize the He of positive contact end 300 Vehicle-mounted charge base engagement is connected.

In order to prevent the impurity such as dust from entering into PCB charging assemblies 200, the open end card baffled 600 of second 102, The baffle plate 600 has the second through hole 601 coordinated with the port of the USB charging sockets 203.

The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned reality The mode of applying is changed and changed.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right Some modifications and changes of the present utility model should also be as falling into scope of the claims of the present utility model.Additionally, to the greatest extent Some specific terms have been used in pipe this specification, but these terms are merely for convenience of description, not to the utility model Constitute any limitation.

Claims (6)

1. a kind of vehicle-mounted USB charger, it is characterised in that including：

Jack body, with first and second, wherein external diameter of the external diameter of first less than second；

It is arranged on the PCB charging assemblies in jack body, the output with pcb board circuit unit and with the pcb board circuit unit Hold the USB charging sockets of connection；

Positive contact end, is connected to the open end of described first；

Cathode contact end, with elasticity, and expose to be arranged on described first first through hole of opposite both sides for and car Charging base is carried to coordinate；And

Electrode line, including the first wire and resilient second wire of tool；

Wherein, one end connection positive contact piece of the first wire, the other end connects the positive pole input of the pcb board circuit unit End；One end connection positive contact piece of the second wire, the other end connects the electrode input end of the pcb board circuit unit；When just When pole contact jaw is connected with first, the inner plane-plane contact at the positive contact piece and the positive contact end；Described second Wire is in elastic compression.

2. a kind of vehicle-mounted USB charger as claimed in claim 1, it is characterised in that：

Second wire is helicoidal structure, and first wire is socketed in inside it.

3. a kind of vehicle-mounted USB charger as claimed in claim 1, it is characterised in that：

The inner face at the positive contact end is the arc-shaped for caving inward, the positive contact piece and the positive contact end The surface of inner face contact is the arc structure with the inner face form fit.

4. a kind of vehicle-mounted USB charger as claimed in claim 1, it is characterised in that：

The open end of the positive contact end with described first is threaded togather.

5. a kind of vehicle-mounted USB charger as claimed in claim 1, it is characterised in that：

The taper structure of the profile of the part of positive contact end and vehicle-mounted charge base engagement.

6. a kind of vehicle-mounted USB charger as claimed in claim 1, it is characterised in that：

The open end card of second is baffled, and the baffle plate has the second through hole coordinated with the port of the USB charging sockets.