Charging gun for electric wheelchair

Abstract

The utility model relates to the technical field of charging wheelchairs, in particular to a charging gun for an electric wheelchair, which comprises a wrapping part, a connecting wire and a charging head, the connecting wire and the charging head are both mounted on the wrapping part, the connecting wire is electrically connected with the charging head, and the charging head comprises a steel ring, a magnetic ring, an insulating part, a circuit board, a charging module and a light-emitting part. The magnetic ring is arranged between the steel ring and the insulating part, the circuit board is installed between the insulating part and the wrapping part, the insulating part is installed at one end of the wrapping part, the connecting wire is electrically connected with the circuit board, the charging module is installed on the circuit board, and the light-emitting part is electrically connected with the charging module and used for feeding back whether the charging module is currently communicated with an external charging socket or not. According to the utility model, through the arrangement of the light-emitting part, the effects of judging whether the charging module is electrified or not and whether the charging module is reliably contacted with the external charging socket or not are realized, thereby being beneficial to judging whether the charging module is smoothly electrified or not and being easy to troubleshoot.

Description

Technical Field

[0001] This utility model relates to the field of charging wheelchair technology, and in particular to a charging gun for electric wheelchairs. Background Technology

[0002] For people with mobility issues, wheelchairs are often used instead of walking. With technological advancements, electric wheelchairs, due to their more stable power for easier movement, are gradually gaining popularity. Clearly, one of the core functions of an electric wheelchair is charging. This is typically achieved by connecting a specialized charging gun to a home charging dock, using the charging gun to plug into the charging port on the electric wheelchair.

[0003] Existing charging guns for electric wheelchairs have the following shortcomings: they do not have a dedicated function to indicate whether charging is successful, so the determination of whether the connection is successful must be made through the control panel of the electric wheelchair, and they cannot quickly troubleshoot problems when there is poor contact. Summary of the Invention

[0004] This utility model addresses the problems of the prior art by providing a charging gun for electric wheelchairs, which can provide feedback on whether the charging module is successfully plugged into the charging port.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a charging gun for an electric wheelchair, including a casing, a connecting wire, and a charging head. Both the connecting wire and the charging head are installed on the casing, and the connecting wire is electrically connected to the charging head. The charging head includes a steel ring, a magnetic ring, an insulating component, a circuit board, a charging module, and a light-emitting component. The magnetic ring is disposed between the steel ring and the insulating component, and the circuit board is installed between the insulating component and the casing. The insulating component is installed at one end of the casing. The connecting wire is electrically connected to the circuit board, the charging module is installed on the circuit board, and the light-emitting component is electrically connected to the charging module to provide feedback on whether the charging module is currently connected to an external charging port.

[0007] Furthermore, the light-emitting element includes an LED lamp, which is mounted on a circuit board.

[0008] Furthermore, the charging module includes contact spring pins and two electrical spring pins, all disposed on the circuit board. The length of the contact spring pins is greater than the length of the electrical spring pins. The connecting wire has two electrical wires, and the two electrical spring pins are connected to the two electrical wires in a one-to-one correspondence.

[0009] Furthermore, a clearance hole is provided between the steel ring and the magnetic ring, and both the contact spring pin and the power-connecting spring pin pass through the insulating part and are exposed to the outside through the charging socket.

[0010] Furthermore, the outer side wall of the insulating component is provided with multiple limiting protrusions, and the side wall of the steel ring is provided with multiple limiting grooves. The multiple limiting protrusions and multiple limiting grooves are assembled one-to-one. The steel ring is also provided with several bending parts, and the magnetic ring is installed at one end of the insulating component, with the bending parts abutting against the other end of the steel ring.

[0011] Furthermore, the insulating component has a positioning post, the circuit board has a positioning hole, and the positioning post is assembled into the positioning hole.

[0012] Furthermore, the covering includes an outer mold and an inner mold. The connecting wire and the charging head are both installed in the inner mold. The outer mold covers the connection between the charging head and the inner mold, as well as the inner mold. The charging head protrudes out of the outer mold.

[0013] Furthermore, the outer mold is formed by secondary injection molding.

[0014] The beneficial effects of this utility model are as follows: By setting up the light-emitting element, this utility model can realize the effect of whether the charging module is connected to power and whether it is in reliable contact with the external charging port, thereby making it easier to judge whether the power is successfully connected and to troubleshoot faults. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 for Figure 2 Enlarged view of point A.

[0018] Reference numerals: 1—Covering component, 2—Connecting wire, 3—Charging head, 11—Outer mold, 12—Inner mold, 31—Steel ring, 32—Magnetic ring, 33—Insulating component, 34—Circuit board, 35—Charging module, 36—Light-emitting component, 37—Leaning hole, 311—Limiting groove, 312—Bending part, 331—Limiting protrusion, 332—Positioning pin, 341—Positioning hole, 351—Contact spring pin, 352—Power-connecting spring pin. Detailed Implementation

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figures 1 to 3As shown, the present invention provides a charging gun for an electric wheelchair, including a cover 1, a connecting wire 2, and a charging head 3. The connecting wire 2 and the charging head 3 are both installed on the cover 1 and are electrically connected to the charging head 3. The charging head 3 includes a steel ring 31, a magnetic ring 32, an insulating component 33, a circuit board 34, a charging module 35, and a light-emitting component 36. The magnetic ring 32 is disposed between the steel ring 31 and the insulating component 33. The circuit board 34 is installed between the insulating component 33 and the cover 1. The insulating component 33 is installed at one end of the cover 1. The connecting wire 2 is electrically connected to the circuit board 34. The charging module 35 is installed on the circuit board 34. The light-emitting component 36 is electrically connected to the charging module 35 and is used to provide feedback on whether the charging module 35 is currently connected to an external charging port.

[0021] Specifically, this utility model can be implemented in the following ways: when the connecting line 2 of this utility model is powered on, the light-emitting element 36 emits light due to the power supply, and at this time it can emit red light; when the charging module 35 is successfully connected to the external charging port and charges the charging port, the light-emitting element 36 switches to emitting green light; when this utility model has poor contact with the external charging port, the cause of poor contact can be determined by combining whether the light-emitting element 36 emits light and the color of the emitted light, thereby improving the efficiency of troubleshooting.

[0022] In this embodiment, the light-emitting element 36 includes an LED lamp, which is mounted on the circuit board 34. This LED lamp can be a multi-color LED lamp, changing its color according to changes in the input current; and the circuit board 34 has a driver controller for this LED lamp, thus achieving the above effect. Specifically, the conventional structure of the driver controller will not be described further here.

[0023] In this embodiment, the charging module 35 includes contact spring pins 351 and two power-connecting spring pins 352, all disposed on the circuit board 34. The length of the contact spring pins 351 is greater than the length of the power-connecting spring pins 352. The connecting wire 2 has two connecting wires, and the two power-connecting spring pins 352 are connected to the two connecting wires in a one-to-one correspondence.

[0024] When the charging socket is inserted into this utility model, the contact spring pin 351 is the first to contact the charging socket, thereby allowing the circuit board 34 to obtain a corresponding signal to control the power-connecting spring pin 352 and the connecting wire 2 to be energized, thus ensuring safety.

[0025] Specifically, a clearance hole 37 is provided between the steel ring 31 and the magnetic ring 32. Both the contact spring pin 351 and the power-connecting spring pin 352 pass through the insulating part 33 and are exposed to the outside through the charging socket. The magnetic ring 32 enhances the connection between this invention and the external charging port, and the steel ring 31 shields the magnetic field of the magnetic ring 32 and the magnetic field generated during charging, ensuring the safety of the surrounding environment and avoiding interference with the surroundings.

[0026] In this embodiment, the outer wall of the insulating component 33 is provided with multiple limiting protrusions 331, and the side wall of the steel ring 31 is provided with multiple limiting grooves 311. The multiple limiting protrusions 331 and the multiple limiting grooves 311 are assembled one-to-one. The steel ring 31 is also provided with several bending portions 312, and the magnetic ring 32 is installed at one end of the insulating component 33, with the bending portions 312 abutting against the other end of the steel ring 31. Through the above structure, the positioning assembly between the insulating component 33 and the steel ring 31 is achieved, thereby ensuring the stability of the position of the magnetic ring 32.

[0027] In this embodiment, the insulating component 33 has a positioning post 332, and the circuit board 34 is provided with a positioning hole 341. The positioning post 332 is assembled into the positioning hole 341. The positioning post 332 is formed in the positioning hole 341 when the insulating component 33 is injection molded, which effectively ensures the firm connection between the insulating component 33 and the circuit board 34.

[0028] In this embodiment, the covering 1 includes an outer mold 11 and an inner mold 12. The connecting wire 2 and the charging head 3 are both installed in the inner mold 12. The outer mold 11 covers the connection between the charging head 3 and the inner mold 12, as well as the inner mold 12 itself. The charging head 3 protrudes out of the outer mold 11. That is, the inner mold 12 assembles and protects the connecting wire 2 and the charging head 3. The inner mold 12 is formed by a single injection molding process and is located around the connecting wire 2 and fixes the charging head 3. Specifically, the outer mold 11 is formed by a second injection molding process. After the inner mold 12 is formed, it is placed in another mold for a second injection molding process, thus forming the outer mold 11. The outer mold 11 covers the connection between the charging head 3 and the inner mold 12, effectively ensuring the stability of the connection and preventing the charging head 3 from disintegrating from the inner mold 12.

[0029] Specifically, both the outer mold 11 and the inner mold 12 are solid structures, meaning that they completely cover the area around the circuit board 34 and the connecting line 2 through an injection molding machine to achieve a protective effect.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A charging gun for electric wheelchair, comprising a covering member, a connecting line and a charging head, the connecting line and the charging head are both installed on the covering member, and the connecting line and the charging head are electrically connected, characterized in that: The charging head comprises a steel ring, a magnetic ring, an insulating piece, a circuit board, a charging module and a light-emitting piece, the magnetic ring is arranged between the steel ring and the insulating piece, the circuit board is installed between the insulating piece and a covering piece, the insulating piece is arranged at one end of the covering piece, a connecting wire is electrically connected with the circuit board, the charging module is installed on the circuit board, the light-emitting piece is electrically connected with the charging module, and the light-emitting piece is used for feeding back whether the charging module is currently in communication with a charging socket of an external environment.

2. The electric wheelchair charging gun according to claim 1, characterized in that: The light-emitting piece comprises an LED lamp, and the LED lamp is installed on the circuit board.

3. The electric wheelchair charging gun according to claim 1, characterized in that: The charging module comprises a contact spring needle and two power spring needles, which are all arranged on the circuit board, the length of the contact spring needle is greater than the length of the power spring needle, the connecting wire has two power lines, and the two power spring needles are connected with the two power lines one by one.

4. The electric wheelchair charging gun according to claim 3, characterized in that: The steel ring and the magnetic ring are provided with a clearance hole, the contact spring needle and the power spring needle both pass through the insulating piece and then are exposed to the external environment through the charging socket.

5. The electric wheelchair charging gun of claim 1, wherein: The outer side wall of the insulating piece is provided with a plurality of limiting protrusions, the side wall of the steel ring is provided with a plurality of limiting grooves, the plurality of limiting protrusions and the plurality of limiting grooves are assembled one by one, the steel ring is further provided with a plurality of bending parts, the magnetic ring is installed at one end of the insulating piece, and the bending parts abut against the other end of the steel ring.

6. The electric wheelchair charging gun of claim 1, wherein: The insulating piece has a positioning column, and the circuit board is provided with a positioning hole, the positioning column is assembled in the positioning hole.

7. The electric wheelchair charging gun of claim 1, wherein: The covering piece comprises an outer mold and an inner mold, the connecting wire and the charging head are arranged in the inner mold, the outer mold covers the connecting part of the charging head and the inner mold and the inner mold, and the charging head protrudes out of the outer mold.

8. The electric wheelchair charging gun according to claim 7, characterized in that: The outer mold is formed by twice injection molding.

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