Elastic contact structure and vehicle-mounted charger

Abstract

The elastic contact structure comprises a contact head, an elastic piece, a flexible electric connecting piece and an electric connecting plate, the two ends of the elastic piece are connected with the contact head and the electric connecting plate respectively, the two ends of the flexible electric connecting piece are connected with the contact head and the electric connecting plate respectively, and the elastic piece and the flexible electric connecting piece are connected with the contact head and the electric connecting plate respectively. After the middle part of the flexible electric connecting piece passes through the electric connecting plate, the part above the electric connecting plate is U-shaped, and the U-shaped part of the flexible electric connecting piece changes along with the expansion and contraction of the elastic piece so as to tightly connect the contact head and the electric connecting plate. According to the utility model, the contact head and the electric connecting plate are connected through the flexible electric connecting piece, the elastic piece between the contact head and the electric connecting plate is compressed or restored, the flexible electric connecting piece moves along with the contact head and the electric connecting plate, and due to the elasticity and conductivity of the flexible electric connecting piece, tight connection between the contact head and the electric connecting plate can be maintained, and stable transmission of current or signals is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, and more specifically to an elastic contact structure and a vehicle charger. Background Art

[0002] With the development of science and technology and the gradual improvement of living standards, cars have become one of the main means of transportation for people. During driving, terminal electronic devices such as navigators, driving recorders, and mobile phones often run out of power. In order to facilitate people to charge terminal electronic devices while riding in a car, car chargers that draw power from the car's cigarette lighter interface and use its own charging interface to output power have been widely used.

[0003] However, the existing on-board chargers have certain defects in structural design, resulting in the following common problems: 1. The structure is complex, and the production, assembly, disassembly and maintenance steps are cumbersome, which to a certain extent increases the production and maintenance costs; 2. During the frequent plugging and unplugging operations of the charger, the safety spring often needs to perform telescopic movements, which often causes the safety spring to be desoldered from the drive board, resulting in poor contact or damage to the charger; 3. The number and specifications of the charging ports on the charger are limited, making it difficult to pair electronic devices with different interface specifications with the charger.

[0004] For example, a Chinese patent with publication number CN206932035U discloses a vehicle charger, which can realize the production and assembly of charger components without configuring hardware accessories such as screws, and greatly facilitates the disassembly and maintenance of the charger.

[0005] However, it is only connected to the circuit board or the fixing part through the tail end of the spring, and the connecting part is small, resulting in poor fixing stability, which can easily cause the connecting parts to break and fail during the long-term compression-rebound working cycle of the spring. Utility Model Content

[0006] In order to overcome the problem that the existing on-board charger is connected to the circuit board or the fixing part through the tail end of the spring, the connecting part is small, resulting in poor fixing stability, and the connecting part is easily broken and failed in the long-term compression-rebound working cycle of the spring, the utility model provides an elastic contact structure and an on-board charger.

[0007] The technical solution of the utility model is as follows:

[0008] A resilient contact structure comprises a contact head, an elastic member, a flexible electrical connector and an electrical connection plate, wherein two ends of the elastic member are respectively connected to the contact head and the electrical connection plate, and two ends of the flexible electrical connector are respectively connected to the contact head and the electrical connection plate, and a portion of the middle portion of the flexible electrical connector that passes through the electrical connection plate and is located above the electrical connection plate is in a "U" shape, and the "U"-shaped portion of the flexible electrical connector changes with the expansion and contraction of the elastic member to tightly connect the contact head and the electrical connection plate.

[0009] According to the utility model of the above scheme, the flexible electrical connector includes an electrical connection line and a flexible sleeve arranged on the periphery of the electrical connection line, and the two ends of the electrical connection line are respectively connected to the contact head and the electrical connection plate to achieve electrical connection between the contact head and the electrical connection plate.

[0010] According to the above-mentioned solution of the utility model, a through hole is provided on the electrical connection plate, and the through hole is used for the flexible electrical connection member to pass through.

[0011] According to the above-mentioned solution of the utility model, the electrical connection plate protrudes downwards on one side facing the contact head to form a connection block, and the elastic member is sleeved on the connection block and connected to the electrical connection plate.

[0012] According to the above-mentioned solution of the utility model, the elastic member is a spring.

[0013] A vehicle charger comprises a charger body, wherein the charger body comprises at least two of the elastic contact structures described above, a positive contact point, a circuit board and a negative contact point, wherein the positive contact point is electrically connected to the circuit board via the elastic contact structure, and the negative contact point is connected to the circuit board via a negative connecting plate.

[0014] According to the utility model of the above scheme, the charger body includes a shell, the circuit board, the elastic contact structure and the negative electrode connecting plate are arranged in the shell, and the positive electrode contact point and the negative electrode contact point extend out of the shell.

[0015] According to the above scheme of the utility model, the negative electrode connecting plate is an irregular "U" shape, and the two negative electrode contact points are respectively arranged on both sides of the negative electrode connecting plate, and the middle part of the negative electrode connecting plate protrudes to form a negative electrode plug-in part, and the negative electrode plug-in part is plugged into the circuit board so that the negative electrode contact point is electrically connected to the circuit board through the negative electrode connecting plate.

[0016] According to the above scheme of the utility model, the positive contact point abuts against the contact head of the elastic contact structure, and the electrical connection plate of the elastic contact structure is plugged into the circuit board, so that the positive contact point is electrically connected to the circuit board through the elastic contact structure.

[0017] The utility model according to the above scheme has the beneficial effect that the utility model connects the contact head and the electrical connection plate through a flexible electrical connector, and the elastic member between the contact head and the electrical connection plate is compressed or restored, and the flexible electrical connector moves accordingly. Due to the elasticity and conductive properties of the flexible electrical connector, it is able to maintain a tight connection with the contact head and the electrical connection plate, thereby ensuring stable transmission of current or signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the elastic contact structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the elastic contact structure of the utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the structure of the vehicle charger of the utility model;

[0021] Figure 4 for Figure 3 Schematic diagram of the explosion structure.

[0022] In the drawings, the reference numerals are as follows:

[0023] 100. Charger body;

[0024] 1. elastic contact structure; 11. contact head; 12. elastic member; 13. flexible electrical connector; 131. electrical connection line; 132. flexible sleeve; 14. electrical connection plate; 141. through hole; 142. connection block;

[0025] 2. Shell;

[0026] 3. Positive contact point;

[0027] 4. Negative contact point;

[0028] 5. Circuit board;

[0029] 6. Negative connecting plate. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. Terms such as "setting" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "bottom", etc. are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0032] It should be noted that the existing on-board charger can realize the production and assembly of the charger components without the need for hardware accessories such as screws, and greatly facilitates the disassembly and maintenance of the charger.

[0033] However, it is only connected to the circuit board or the fixing part through the tail end of the spring, and the connecting part is small, resulting in poor fixing stability, which can easily cause the connecting parts to break and fail during the long-term compression-rebound working cycle of the spring.

[0034] like Figure 1-Figure 2 As shown, this embodiment provides an elastic contact structure 1, in which a contact head 11 and an electrical connection plate 14 are connected by a flexible electrical connector 13. When the elastic member 12 between the contact head 11 and the electrical connection plate 14 is compressed or restored, the flexible electrical connector 13 moves accordingly. Due to the elasticity and conductive properties of the flexible electrical connector 13, a tight connection with the contact head 11 and the electrical connection plate 14 can be maintained, thereby ensuring stable transmission of current or signals.

[0035] Specifically, it includes a contact head 11, an elastic member 12, a flexible electrical connector 13 and an electrical connection plate 14, the two ends of the elastic member 12 are respectively connected to the contact head 11 and the electrical connection plate 14, the two ends of the flexible electrical connector 13 are respectively connected to the contact head 11 and the electrical connection plate 14, and the middle part of the flexible electrical connector 13 passes through the electrical connection plate 14 and the part located above the electrical connection plate 14 is "U"-shaped, and the "U"-shaped part of the flexible electrical connector 13 changes with the expansion and contraction of the elastic member 12 to tightly connect the contact head 11 and the electrical connection plate 14.

[0036] When the elastic member 12 between the contact head 11 and the electrical connection board 14 is compressed, the flexible electrical connection member 13 moves upward with the compression of the elastic member 12, and the "U"-shaped portion becomes larger; when the elastic member 12 between the contact head 11 and the electrical connection board 14 is restored, the flexible electrical connection member 13 and the "U"-shaped portion are restored to their original size. During the entire process, the flexible electrical connection member 13 can always maintain a tight connection with the contact head 11 and the electrical connection board 14, ensuring the stability and reliability of the electrical connection.

[0037] In one embodiment, the flexible electrical connector 13 includes an electrical connection line 131 and a flexible sleeve 132 disposed on the periphery of the electrical connection line 131, and the two ends of the electrical connection line 131 are respectively connected to the contact head 11 and the electrical connection board 14 to achieve electrical connection between the contact head 11 and the electrical connection board 14. The function of the flexible sleeve 132 is to protect the electrical connection line 131 connecting the electrical connection board 14 and the contact head 11, and prevent the electrical connection line 131 from being damaged by friction, resulting in disconnection between the electrical connection board 14 and the contact head 11.

[0038] In one embodiment, the electrical connection plate 14 is provided with a through hole 141 for the flexible electrical connection member 13 to pass through. The size of the through hole 141 is larger than the size of the outer periphery of the flexible electrical connection member 13, so as to reduce the friction between the flexible electrical connection member 13 and the electrical connection plate 14 when the elastic member 12 is compressed or restored.

[0039] In one embodiment, the electrical connection board 14 protrudes downward from one side facing the contact head 11 to form a connection block 142, and the elastic member 12 is sleeved on the connection block 142 and connected to the electrical connection board 14. The provision of the connection block 142 ensures that one end of the elastic member 12 can be stably mounted on the electrical connection board 14, thereby increasing the stability of the installation between the elastic member 12 and the electrical connection board 14.

[0040] In one embodiment, the elastic member 12 is made of elastic materials such as a spring or rubber, and its elasticity and pressure can be adjusted as needed.

[0041] like Figure 3-Figure 4 This embodiment provides a vehicle charger, wherein an elastic contact structure 1 connects a contact head 11 and an electrical connection board 14 through a flexible electrical connection member 13. When the elastic member 12 between the contact head 11 and the electrical connection board 14 is compressed or restored, the flexible electrical connection member 13 moves accordingly. Due to the elasticity and conductive properties of the flexible electrical connection member 13, a tight connection with the contact head 11 and the electrical connection board 14 can be maintained, thereby ensuring stable transmission of current or signals.

[0042] Specifically, it includes a charger body 100, which includes at least two of the above-mentioned elastic contact structures 1, a positive contact point 3, a circuit board 5 and a negative contact point 4, the positive contact point 3 is electrically connected to the circuit board 5 through the elastic contact structure 1, and the negative contact point 4 is connected to the circuit board 5 through the negative connecting plate 6.

[0043] The positive contact point 3 is located at the front end of the charger body 100 and is used to connect to the positive pole of the vehicle power supply. The negative contact point 4 is located at the other end of the charger body 100 and is used to connect to the negative pole of the vehicle power supply. When the vehicle charger is plugged into the vehicle power supply, the positive contact point 3 and the negative contact point 4 are respectively connected to the positive and negative poles of the vehicle power supply to ensure a complete current circuit.

[0044] In one embodiment, the charger body includes a shell 2 , a circuit board 5 , an elastic contact structure 1 and a negative electrode connecting plate 6 are arranged in the shell 2 , and a positive electrode contact point 3 and a negative electrode contact point 4 extend out of the shell 2 .

[0045] In one embodiment, the negative electrode connecting plate 6 is an irregular "U" shape, and two negative electrode contact points 4 are respectively arranged on both sides of the negative electrode connecting plate 6. The middle part of the negative electrode connecting plate 6 protrudes to form a negative electrode plug-in portion, and the negative electrode plug-in portion is plugged into the circuit board 5 so that the negative electrode contact point 4 is electrically connected to the circuit board 5 through the negative electrode connecting plate 6.

[0046] By optimizing the structure of the negative electrode connecting plate 6, the negative electrode connecting plate 6 can be installed on the circuit board 5 in a manner similar to bundling by utilizing the cooperation of the negative electrode contact points 4 on both sides and the negative electrode plug-in portion in the middle. The negative electrode connecting plate 6 has sufficient elastic buffering effect, so that when the charger body 100 is inserted into the cigarette lighter port of the car and then installed in the cigarette lighter port, or when the charger body 100 is pulled out from the cigarette lighter port, the elastic contraction effect of the negative electrode connecting plate 6 can be utilized to enable it to be pulled out smoothly.

[0047] If the vehicle is jolted or vibrated, the negative connector will compress or recover to adapt to the jolting or vibration of the vehicle.

[0048] In one embodiment, the positive contact point 3 abuts against the contact head 11 of the elastic contact structure 1 , and the electrical connection plate 14 of the elastic contact structure 1 is plugged into the circuit board 5 , so that the positive contact point 3 is electrically connected to the circuit board 5 through the elastic contact structure 1 .

[0049] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0050] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A resilient contact structure, characterized in that: It includes a contact head, an elastic member, a flexible electrical connector and an electrical connection plate, wherein the two ends of the elastic member are respectively connected to the contact head and the electrical connection plate, the two ends of the flexible electrical connector are respectively connected to the contact head and the electrical connection plate, and the middle part of the flexible electrical connector passes through the electrical connection plate and the part located above the electrical connection plate is "U"-shaped, and the "U"-shaped part of the flexible electrical connector changes with the expansion and contraction of the elastic member to tightly connect the contact head and the electrical connection plate.

2. The elastic contact structure according to claim 1, characterized in that: The flexible electrical connector includes an electrical connection line and a flexible sleeve arranged on the periphery of the electrical connection line. The two ends of the electrical connection line are respectively connected to the contact head and the electrical connection board to achieve electrical connection between the contact head and the electrical connection board.

3. A resilient contact structure according to claim 1 or 2, characterized in that: The electrical connection plate is provided with a through hole, through which the flexible electrical connection member passes.

4. The elastic contact structure according to claim 3, characterized in that: The electrical connection plate protrudes downwards from one side facing the contact head to form a connection block, and the elastic member is sleeved on the connection block and connected to the electrical connection plate.

5. The elastic contact structure according to claim 1 or 4, characterized in that: The elastic member is a spring.

6. A vehicle charger, comprising a charger body, characterized in that: The charger body includes at least two elastic contact structures as described in any one of claims 1 to 5, a positive contact point, a circuit board and a negative contact point, the positive contact point is electrically connected to the circuit board through the elastic contact structure, and the negative contact point is connected to the circuit board through a negative connecting plate.

7. The vehicle charger according to claim 6, characterized in that: The charger body comprises a shell, the circuit board, the elastic contact structure and the negative electrode connecting plate are arranged in the shell, and the positive electrode contact point and the negative electrode contact point extend out of the shell.

8. The vehicle charger according to claim 7, characterized in that: The positive contact point abuts against the contact head of the elastic contact structure, and the electrical connection plate of the elastic contact structure is plugged into the circuit board, so that the positive contact point is electrically connected to the circuit board through the elastic contact structure.

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