CN201478407U - Charger for vehicle - Google Patents

Abstract

The utility model provides a charger for vehicle, it includes: the fuse comprises a first shell, a second shell, a circuit board, an anode copper head, a fixed reed and a fuse, wherein the first shell and the second shell are mutually closed into a whole, the circuit board, the anode copper head, the fixed reed and the fuse are accommodated in the first shell and the second shell, a spiral spring is sleeved between the anode copper head and the fuse, and the fuse can be effectively positioned and kept at a set position through a hollow part of the spiral spring so as to be suitable for a miniaturized assembly form, meet the requirements on practical use and ensure the electric contact performance.

Description

car charger

technical field

The utility model provides a charger for a vehicle, in particular to a charger with a small size and convenient use, which can be directly inserted into the socket of a cigarette lighter in a vehicle, provides power supply for electronic products, and can make the electrical contact performance more reliable. Car charger.

Background technique

As we all know, the front of the driver's seat of the car is equipped with a socket for the electrical connection of the cigarette lighter to use it to provide the cigarette lighter function of the cigarette lighter. The car charger provides the power on the car to electronic products, such as: car vacuum cleaner, gas air compressor, mobile phone, charger, etc., for power supply or charging.

Generally, there is a fuse in the car charger, which is used for power-off measures when the current is overloaded. The fuse is fixed by a ㄇ-shaped metal clip, which is clamped and positioned on the positive copper head of the car charger. When plugged into the cigarette lighter socket, if the current is too high, the fuse will be blown, so that it cannot be energized to protect the pre-energized electronic products from damage.

However, the development of this type of car charger tends to be miniaturized, so the volume of the positive copper tip of the car charger is reduced accordingly, so that the space of the positive copper tip receiving part cannot accommodate the clamping effect. ㄇ-shaped metal clip, and due to the rigid structure of the general ㄇ-shaped metal clip, there may be inaccurate electrical contact with the cigarette lighter socket, so it is urgent to find an improvement solution.

Utility model content

The purpose of the vehicle charger of the utility model is to provide a vehicle charger which is small in size and easy to use, can be directly inserted into a cigarette lighter socket in a vehicle, and can make the telecommunications contact performance more reliable.

In order to achieve the above purpose, the vehicle charger of the present invention includes: first and second housings, which are integrated with each other, are made of non-metallic materials, and have an insertion end and a grip end;

The circuit board is accommodated between the first and second housings, and is electrically connected with a positive copper head, a fixed reed and a fuse. The positive copper head is located at the insertion end of the first and second housings, and has a body and a neck. The main body is provided with a receiving part, and the neck is exposed on the front edge of the insertion end. The fixed spring has two arc-shaped pressing arms, which are partially exposed on the side edge of the insertion end. The two ends of the fuse have conductive sleeves respectively. One end of the fuse is arranged in the accommodating portion of the positive copper head; and a helical spring is arranged in the accommodating portion of the positive copper head, and the hollow part of the helical spring locates and maintains one end of the fuse in a predetermined position.

The helical spring clip rests on the conductive sleeve at one end of the fuse.

Relative to the one end of the fuse of the spiral spring, an elastic body is further provided. One end of the elastic body is in contact with the fuse, and the other end is in communication with the circuit board. When the car charger is inserted into the cigarette lighter socket, the elastic body has Strong thrust, firm and reliable electrical contact.

The elastic body is a helical spring, and clamps the conductive sleeve at one end of the fuse through its hollow.

The insertion ends of the first and second casings are provided with larger shaft connection holes, and cover a detachable cap, and the cap is provided with a through hole for the neck part of the positive copper head to protrude , by removing the cap to replace the fuse.

The detachable cap is screw-locked, and the inner walls of the shaft connection holes of the cap and the insertion ends of the first and second shells are respectively provided with interlocking threads.

A washer is further provided between the cap and the shaft connection holes of the insertion ends of the first and second casings.

Beneficial effects of the utility model: the utility model is small in size and easy to use, and can be directly inserted into the cigarette lighter socket in the car for use, and it is provided with an elastic body opposite to the fuse end of the helical spring, and one end of the elastic body is connected to the The fuse is in contact, and the other end communicates with the circuit board, through which, when the car charger is plugged into the cigarette lighter socket, it has an appropriate thrust force and can make stable and reliable electrical contact.

In order to further understand the features and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model. However, the accompanying drawings are for reference and illustration only, and are not intended to limit the present utility model.

Description of drawings

The technical solution and other beneficial effects of the utility model will be apparent through the detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings.

Fig. 1 is a three-dimensional exploded view of the utility model vehicle charger;

Fig. 2 is the combined plan view of Fig. 1;

Fig. 3 is a sectional view along line 3-3 of Fig. 2 .

Detailed ways

In order to further illustrate the technical means adopted by the utility model and its effects, a detailed description will be given below in conjunction with preferred embodiments of the utility model and accompanying drawings.

As shown in Figures 1-3, the vehicle charger 1 of the present invention includes: first and second housings 20, 21, a circuit board (not shown), positive copper head 4, fixed reed 5 and fuse 6 and other structures , wherein the first and second housings 20, 21 can be integrated into each other, are made of non-metallic materials, have an insertion end 22 and a grip end 23, and the insertion end 22 is used for plugging into the car to light a cigarette In the socket of device, and this handle end 23 can be grasped for hand. In addition, the insertion end 22 is provided with a larger shaft connection hole 221, and the cover is covered with a detachable cap 24, and the cap 24 is provided with a through hole 241 only for the partial protruding of the positive copper head 4. , the cap 24 and the inner wall of the shaft connection hole 221 are respectively provided with screw threads 242, 222 that can be interlocked with each other, and a gasket 25 is provided between the two, through which the cap 24 can be firmly screwed. Locked on the insertion end 22 . In this way, the cap 24 can be removed for replacement by replacing the fuse.

The circuit board is accommodated between the first and second casings 20 and 21, and is electrically connected with a positive copper head 4, a fixed reed 5, a fuse 6, and a helical spring 7. As shown in FIG. 3, the positive copper The head 4 is assembled at the insertion end 22 of the first and second housings 20, 21, and has a body 40 and a neck 41, wherein the body 40 is provided with a housing portion 401, and the neck 41 is partially exposed on the front edge of the insertion end 22 for use in It is in contact with the terminal (not shown) of the car's cigarette lighter socket.

The fixing reed 5 has two arc-shaped pressing arms 51, 52, both of which are partially exposed on the side edge of the insertion end 22, and are used for stably pressing and fixing after being inserted into the cigarette lighter socket of a car.

The two ends of the fuse 6 have conductive sleeves 60, 61 respectively, and the conductive sleeve 60 at one end is arranged in the accommodating portion 401 of the positive copper head 4, and is clamped and positioned by the coil spring 7, and the coil spring 7 It is also arranged in the receiving portion 401 of the positive copper head 4, through which the hollow portion 70 can be effectively clamped only on the conductive sleeve 60 at one end of the fuse 6, and the fuse 6 can be positioned and kept at a predetermined position. In addition, relative to one end of the fuse of the coil spring 7, an elastic body 8 is provided to position the conductive sleeve 61 at the other end of the fuse 6. Clamp the conductive sleeve 61 at one end of the fuse 6 (as shown in FIG. 3 ), and communicate with the circuit board at the other end 81, through which, when the car charger is inserted into the cigarette lighter socket, it has an appropriate thrust force. Can be stable and reliable electrical contact.

Through the combination of the above structures, it can be clearly understood that one end of the fuse 6 can be effectively clamped at a predetermined position by the hollow part of the coil spring 7, and the other end of the fuse 6 can be clamped and positioned in conjunction with the elastic body 8, and then can be Stable and accurate positioning and electrical contact, the utility model is not only suitable for miniaturized car chargers, but also can make the electrical contact performance more reliable.

As mentioned above, for those of ordinary skill in the art, various other corresponding changes and deformations can be made according to the technical scheme and technical concept of the present utility model, and all these changes and deformations should belong to the appendix of the utility model. The scope of the claims.

Claims (7)

1. a vehicle charger can dock with the cigarette lighter socket in the automobile, it is characterized in that, comprising:

First and second housing, its mutual closing is an one, is made by nonmetallic materials, has insertion end and holding end;

Circuit board, be contained between first and second housing, be electrically connected with anodal copperhead, clip and fuse on it, this positive pole copperhead is positioned at the insertion end of first and second housing, has body and neck, body is provided with the resettlement section, neck exposes to the leading edge of insertion end, and this clip has two arcs and compresses arm, and its part exposes to the lateral margin of this insertion end, these fuse both ends have the conduction body respectively, and the one end is located in the resettlement section of this positive pole copperhead; And a spiral spring, to be located in the resettlement section of this positive pole copperhead, the hollow bulb of this spiral spring is with the end location of this fuse and remain on both allocations.

2. vehicle charger as claimed in claim 1 is characterized in that, this spiral spring is folded on the conduction body of fuse one end.

3. vehicle charger as claimed in claim 2, it is characterized in that, fuse one end with respect to this spiral spring, further be provided with an elastomer, this elastomer one end contacts with this fuse, and the other end is communicated with circuit board, when utilizing it to provide this vehicle charger to be inserted in cigarette lighter socket, the power that pushes that has, firm certain electrical contact.

4. vehicle charger as claimed in claim 3 is characterized in that, this elastomer is a spiral spring, inserts and puts by the conduction body of its hollow bulb with fuse one end.

5. as vehicle charger as described in the claim 4, it is characterized in that, the insertion end of this first and second housing, be provided with bigger shaft-jointed hole, and cover cap one dismountable cap, this cap is provided with the through hole that the neck part for this positive pole copperhead leans out, and unloads this cap and changes operation by changing fuse.

6. vehicle charger as claimed in claim 5 is characterized in that, this dismountable cap is in the screw lock mode, at the shaft-jointed hole inwall of the insertion end of this cap and first and second housing, is respectively equipped with the screw thread of mutual interlocking.

7. vehicle charger as claimed in claim 6 is characterized in that, between the shaft-jointed hole of cap and first and second housing insertion end, further is provided with packing ring.

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