DE202024105000U1 - Charging and power supply adapters for trailers and caravans - Google Patents

Abstract

Charging and power supply adapter for a trailer and a caravan, characterized in that it comprises an adapter housing (1) and a first connector (2) and a second connector (3) with different numbers of cells, the second connector (3) being pressed against the first connector (2) to form a converter head which is inserted into the adapter housing (1).

Description

technical field

The utility model relates to the technical field of vehicle charging devices, in particular a charging and power supply adapter for a trailer and a caravan.

State of the art

As people's living standards are continuously improving, people are more willing to take trailers and RVs when traveling. However, the use of electricity in RVs in wild environments has always restricted people's lives. When using a trailer or RV, power supply from the vehicle is required. The power plug of some trailers and RVs does not match the power plug of the vehicle, and a transition connection must be made via the power connector plug. The adapter on the market today has the following defects: the adapter has a split structure, and the cells of the connector are respectively arranged on the two sides of the case; this split adapter is less waterproof and not easy to assemble, and also increases the production cost of the case.

Content of the invention

In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a charging and power supply adapter for a trailer and a caravan in order to improve the waterproofness of the adapter and the ease of assembly of the converter head.

To solve the above-mentioned technical problems, the utility model offers the following technical solution.

A charging and power supply adapter for a trailer and a caravan, comprising an adapter housing and a first connector and a second connector with different numbers of cells, the second connector being pressed against the first connector to form a converter head which is plugged into the adapter housing.

Preferably, the first connector is provided with a support piece, and the second connector is pressed against the support piece to form a mounting space between the first connector and the second connector by means of the support piece.

Preferably, the second connector is provided with a plug-in slot, wherein the support piece is inserted in the plug-in slot.

Preferably, a limiting step is provided in the adapter housing, wherein the first connector is fastened in the adapter housing by means of the limiting step.

Preferably, a snap slot is provided in the adapter housing, wherein the second connector is provided with a snap head which fits into the snap slot, wherein the second connector is mounted in the adapter housing by means of the snap slot to delimit the first connector by means of the second connector.

Preferably, a ring strip is provided on the first connector, wherein the ring strip rests against the inner side wall of the limiting step.

Preferably, a limiting strip is provided in the adapter housing, which is adapted to the second connector, wherein the limiting strip limits the insertion depth of the second connector into the adapter housing.

Preferably, a water sealing ring is mounted in the adapter housing, which is pressed against the splice point of the adapter housing and the first connector.

Preferably, an annular slot is provided on the side wall of the second connector, in which a sealing ring is mounted.

Preferably, the second connector comprises a retaining ring, a second copper pin holder and a copper pin, wherein a mounting cavity is provided in the retaining ring in which the second copper pin holder is mounted, wherein the copper pin is fixed within the second copper pin holder.

The advantageous effect of the utility model is that the first connector and the second connector are mounted outside the adapter housing and then installed inside the adapter housing, which improves the assembly convenience of the first connector and the second connector.

Description of the drawings

• 1 schematic diagram of the structure of the charging and power supply adapter;
• 2 unfolded schematic diagram of the structure of the charging and power supply adapter;
• 3 Cross-sectional view of the charging and power supply adapter;
• 4 schematic representation of the structure of the first copper pin holder;
• 5 schematic representation of the structure of the adapter housing;
• 6 schematic representation of the structure of the retaining ring.

List of reference symbols:

1-Adapter housing; 1-1-Limiting step; 1-2-Snap slot; 1-3-Limiting strip; 2-First connector; 2-1-Support piece; 2-2-First copper pin holder; 2-3-Copper pin mounting holes; 2-4-Ring strip; 3-Second connector; 3-1-Mating slot; 3-2-Snap head; 3-3-Ring slot; 3-4-Retaining ring; 3-5-Second copper pin holder; 3-6-Mounting groove; 4-Water sealing ring; 4-1-Recess; 5-Sealing ring; 6-Copper pins;

Concrete embodiments

The utility model is described in more detail below in conjunction with the attached drawings.

A charging and power supply adapter for a trailer and a caravan, comprising an adapter housing 1, a first connector 2 with 13 cells and a second connector 3 with 7 cells, the first connector 2 and the second connector 3 being connected to each other by wires or circuit boards, thereby enabling the charging head of the vehicle charging plug to be converted from 7 to 13 cells, the second connector 3 being pressed against the first connector 2 to form a converter head, the converter head being inserted into the adapter housing 1, and after the first connector 2 and the second connector 3 have been pressed against the assembly to form the converter head, the converter head is then mounted in the one-piece adapter housing 1; on the one hand, this facilitates the assembly of the various components of the adapter, and on the other hand, the one-piece adapter housing 1 ensures the watertightness of the present charging and power supply adapter and thus its service life.

The first connector 2 includes a first copper pin holder 2-2 and copper pins 6, wherein 13 copper pin mounting holes 2-3 are provided in the first copper pin holder 2-2 and the copper pins 6 are attached to the first copper pin holder 2-2 through the copper pin mounting holes 2-3, thereby forming the first connector 2 with 13 cells.

An annular limiting step 1-1 is provided in the adapter housing 1, wherein the first copper pin holder 2-2 is fixed to the lower end surface of the limiting step 1-1, so that the first connector 2 is positioned and mounted in the adapter housing 1 by means of the limiting step 1-1.

On the first copper pin holder 2-2, a ring strip 2-4 is provided which protrudes toward the opening of the adapter housing 1, so that the ring strip 2-4 abuts against the inner wall of the limiting step 1-1, that is, the outer wall of the ring strip 2-4 abuts against the inner wall of the small opening of the adapter housing 1, whereby the contact area between the first copper pin holder 2-2 and the adapter housing 1 by means of the ring strip 2-4 is increased, which improves the sealing of the installation on the first connector 2.

To further improve the sealing of the assembly on the first connector 2, a water sealing ring 4 is mounted in the adapter housing 1 to withstand the splice point of the adapter housing 1 and the first connector 2, wherein a recess 4-1 is provided on the outer side wall of the water sealing ring 4 into which the ring strip 2-4 projects for insertion, and wherein the water sealing ring 4 is made of a rubber material to ensure the sealing of the assembly on the first connector 2.

A support piece 2-1 is evenly provided on the lower end surface of the first copper pin holder 2-2, and a reinforcing rib is provided between the support piece 2-1 and the lower end surface of the first copper pin holder 2-2 to ensure the strength of the support piece 2-1, the second connector 3 abuts on the lower end of the support piece 2-1, by the provision of the support piece 2-1, a mounting space is formed between the first connector 2 and the second connector 3, and the guide or circuit board for connecting the first connector 2 and the second connector 3 is placed in the mounting space, thereby ensuring that each converter head has the same size of the mounting space, which facilitates the connection of the first connector 2 and the second connector 3.

The second connector 3 comprises a retaining ring 3-4, a second copper pin holder 3-5 and a copper pin 6, wherein the retaining ring 3-4 has the shape of a cylinder, a mounting cavity is provided inside the retaining ring 3-4 and a fastening groove 3-6 is provided on the inner wall of the mounting cavity, wherein the second copper pin holder 3-5 is fixedly mounted in the mounting cavity by means of the fastening groove 3-6, the second copper pin holder 3-5 is provided with 7 copper pin through holes and the copper pin 6 is fastened in the copper pin through holes.

A slot 3-1 is provided in the upper end surface of the retaining ring 3-4, and the support piece 2-1 is inserted into the slot 3-1, thereby preventing relative rotation between the first connector 2 and the second connector 3 during the assembly process of the converter head and facilitating the ensuring of the convenience of assembly of the converter head.

A snap head 3-2 is provided on the outer wall of the retaining ring 3-4 and a snap slot 1-2 is provided on the inner wall of the adapter housing 1, and when assembling the second connector 3 into the adapter housing 1, the snap slot 1-2 is snapped into the snap head 3-2, thereby achieving a firm assembly of the second connector 3 with the adapter housing 1, after completion of the assembly of the second connector 3, the second connector 3 is pressed against the support piece 2-1 to limit the lower end surface of the first connector 2 by the second connector 3, thus achieving that the first connector 2 and the second connector 3 are mounted in a fixed position in the adapter housing 1.

A limiting strip 1-3 is also provided on the inner wall of the adapter housing 1, which is located between the first connector 2 and the second connector 3, and the immersion depth of the retaining ring 3-4 into the adapter housing 1 is limited by the offset of the limiting strip 1-3 against the upper end face of the retaining ring 3-4, which prevents the retaining ring 3-4 from being installed too deeply into the adapter housing 1, which leads to bending damage to the support piece 2-1.

On the side wall of the retaining ring 3-4, a ring slot 3-3 is provided in which a sealing ring 5 is mounted, whereby the sealing ring 5 increases the sealing between the adapter housing 1 and the second connector 3.

It is noted that the present application only improves the housing structure of the charging and power supply adapter and the structure of the copper pin holder for fixing the electrical core, and does not involve the improvement of the electrical connection between the first connector 2 and the second connector 3, wherein the copper pins between the first connector 2 and the second connector 3 are electrically connected by means of a wire or a circuit board.

The foregoing description of the disclosed embodiments enables one skilled in the art to make or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the utility model; therefore, the utility model is not limited to the embodiments shown herein, but is subject to the widest possible scope consistent with the principles and novel features disclosed herein.

Although the terms used here are those corresponding to the adjacent designations in the drawings, the possibility of using other terms is not excluded; these terms are used only to better describe and explain the essence of the utility model; it would be contrary to the spirit of the utility model if they were interpreted as any additional limitation.

Claims (10)

Charging and power supply adapter for a trailer and a caravan, characterized in that it comprises an adapter housing (1) and a first connector (2) and a second connector (3) with different numbers of cells, the second connector (3) being pressed against the first connector (2) to form a converter head which is inserted into the adapter housing (1). Charging and power supply adapter for a trailer and a caravan according to claim 1 , characterized in that the first connector (2) is provided with a support piece (2-1), and the second connector (3) is pressed against the support piece (2-1) to form an assembly space between the first connector (2) and the second connector (3) by means of the support piece (2-1). Charging and power supply adapter for a trailer and a caravan according to claim 2 , characterized in that the second plug connector (3) is provided with a plug-in slot (3-1), wherein the support piece (2-1) is inserted into the plug-in slot (3-1). Charging and power supply adapter for a trailer and a caravan according to claim 1 , characterized in that a limiting step (1-1) is provided in the adapter housing (1), wherein the first connector (2) is fastened in the adapter housing (1) by means of the limiting step (1-1). Charging and power supply adapter for a trailer and a caravan according to claim 4 , characterized in that a snap slot (1-2) is provided in the adapter housing (1), wherein the second connector (3) is provided with a snap head (3-2) which fits into the snap slot (1-2), wherein the second connector (3) is mounted in the adapter housing (1) by means of the snap slot (1-2) in order to delimit the first connector (2) by means of the second connector (3). Charging and power supply adapter for a trailer and a caravan according to claim 4 , characterized in that an annular strip (2-4) is provided on the first connector (2), wherein the annular strip (2-4) rests on the inner side wall of the limiting step (1-1). Charging and power supply adapter for a trailer and a caravan according to claim 1 , characterized in that a limiting strip (1-3) is provided in the adapter housing (1), which is adapted to the second connector (3), wherein the insertion depth of the second connector (3) into the adapter housing (1) is limited by the limiting strip (1-3). Charging and power supply adapter for a trailer and a caravan according to claim 1 , characterized in that a water sealing ring (4) is mounted in the adapter housing (1), which is pressed against the splice point of the adapter housing (1) and the first connector (2). Charging and power supply adapter for a trailer and a caravan according to claim 1 , characterized in that an annular slot (3-3) is provided on the side wall of the second connector (3), in which a sealing ring (5) is mounted. Charging and power supply adapter for a trailer and a caravan according to claim 1 , characterized in that the second connector (3) comprises a retaining ring (3-4), a second copper pin holder (3-5) and a copper pin (6), wherein a mounting cavity is provided in the retaining ring (3-4) in which the second copper pin holder (3-5) is mounted, wherein the copper pin (6) is fastened within the second copper pin holder (3-5).

Images