High-reliability mud-salt-resistant contact element

Abstract

The invention discloses a high-reliability mud-salt-resistant contact element, which comprises a terminal body, and is characterized in that the head end of the terminal body is a plugging end, and the tail end of the terminal body is a welding end; the end part of the plugging end is provided with an elastic part; a jack body matched with the power connection plug is formed on the inner side surface of the elastic part and is used for ensuring that the power connection plug can be in tight contact with the elastic part; inner grooves are evenly distributed in the positions, close to the end of the jack body, of the inner side face of the jack body. The contact element designed by the invention can meet the requirement of stable ten thousand times of plugging service life in an extremely harsh mud brine environment, and has extremely high reliability, practicability and stability.

Description

Technical Field

[0001] The invention relates to the technical field of electric connectors, and more particularly to a highly reliable mud and salt water resistant contact piece. Background Art

[0002] The new energy vehicle industry is a strategic emerging industry. The country has provided strong support to it, which has also enabled new energy vehicles to quickly occupy the market. With the popularization of new energy vehicles, the use environment of charging gun holders has become increasingly harsh. In complex environments such as mud and salt water, traditional connector contacts are prone to accumulation of stains on the contact surface, salt water corrosion and other factors, and often have poor contact during plugging and unplugging, resulting in unstable signal transmission. At the same time, existing contacts are prone to deformation during frequent plugging and unplugging, which affects their service life.

[0003] In the prior art, there are not many contacts that can meet the above performance requirements of high reliability, strong tolerance, anti-fouling and high corrosion resistance. Therefore, there is an urgent need for a connector contact structure that can automatically remove stains on the contact surface, has strong corrosion resistance and resistance to over-deformation, and has redundant contact and high anti-vibration ability to ensure high reliability and stability in harsh environments. Summary of the invention

[0004] The object of the present invention is to provide a highly reliable mud and salt water resistant contact piece, in order to solve the technical problems in the background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A highly reliable contact piece resistant to mud and salt water comprises: a terminal body, the head end of the terminal body being a plug-in end, and the tail end of the terminal body being a welding end; the end of the plug-in end having an elastic portion; the inner side surface of the elastic portion forming a socket body matching an electrical plug, for ensuring that the electrical plug can be in close contact with the elastic portion; the inner side surface of the socket body being provided with evenly distributed inner grooves near the end of the socket body.

[0007] In some embodiments, the elastic portion is a plurality of uniformly surrounding conductive elastic spring strips opened along the axial direction.

[0008] In some embodiments, a slot is distributed outside the conductive elastic spring near the end of the insertion hole for fixing the elastic ring.

[0009] In some embodiments, the inner wall of the conductive elastic spring has a 1.1° inverted cone structure.

[0010] In some embodiments, a through slot is formed between two adjacent conductive elastic spring sheets.

[0011] In some embodiments, the terminal body has an annular recess at the end of the elastic portion.

[0012] In some embodiments, the surface of the jack body has a plating layer, and the plating layer is formed by a double plating process using a chemical nickel plating and then a silver plating process.

[0013] In some embodiments, the elastic ring is made of corrosion-resistant stainless steel.

[0014] In some embodiments, the opening of the elastic ring is designed with an inner concave circle.

[0015] The present invention has the following beneficial effects:

[0016] The contact designed by the present invention can ensure a stable plug-in and pull-out life of 10,000 times in an extremely harsh muddy and salty water environment, and has extremely high reliability, practicality and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of a socket of a highly reliable mud and salt water resistant contact piece of the present invention;

[0018] Figure 2 It is a schematic diagram of a full cross-sectional view of a highly reliable mud and salt water resistant contact member of the present invention;

[0019] Figure 3 It is a top view schematic diagram of a highly reliable mud and salt water resistant contact piece of the present invention;

[0020] Figure 4 It is an overall schematic diagram of a detailed description of a highly reliable mud and salt water resistant contact member of the present invention;

[0021] Figure 5 It is a schematic diagram of an elastic ring of a high-reliability mud and salt water resistant contact piece of the present invention.

[0022] Illustrations: 10 - jack body, 101 - inner groove, 102 - inverted cone structure, 12 - through groove, 20 - clamping groove, 201 - elastic ring, 202 - inner concave circle design, 30 - elastic part, 31 - annular recess, 40 - fixing part, 50 - annular clamping groove, 60 - ultrasonic welding area. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0024] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0028] The following will be combined Figure 1-5 , a high-reliability mud-salt water-resistant contact member involved in the embodiment of the present application is described in detail. It is worth noting that the following embodiments are only used to explain the present application and do not constitute a limitation on the present application.

[0029] Embodiment 1:

[0030] like Figure 1-5As shown, a highly reliable mud and salt water resistant contact piece comprises: a terminal body, the head end of the terminal body is a plug-in end, and the tail end of the terminal body is a welding end; the end of the plug-in end has an elastic part 30; the inner side surface of the elastic part 30 forms a socket body 10 that matches the power plug, for ensuring that the power plug can be in close contact with the elastic part 30; the inner side surface of the socket body 10 is provided with evenly distributed inner grooves 101 near the end position of the socket body 10.

[0031] The socket body 10 is processed by cold heading, the elastic part 30 (a plurality of slots are provided along the axial direction at the head end of the terminal body to separate and form a plurality of uniformly surrounding conductive elastic spring sheets), and the socket body 10 is used to ensure that the power plug can be in close contact with the conductive spring sheet, reducing the contact resistance and allowing a larger current to pass.

[0032] A slot 20 is distributed outside the conductive elastic spring near the end of the socket to fix the elastic ring 201; at the same time, inner grooves 101 are evenly distributed inside the conductive elastic spring near the end. The elastic material combined with the groove design not only ensures reliable contact closure, but also has a practical function. Various stains can be scraped off when plugging and unplugging, and surface rust spots can also be removed by the elastic material accordingly.

[0033] The inner wall of the conductive elastic spring is a 1.1° inverted cone structure 102 with redundant contact, which has extremely high vibration resistance and increases the contact area with the power plug during plugging and unplugging. A through groove 12 is formed between two adjacent conductive elastic springs, which is conducive to discharging impurities such as mud and salt water mixed in the plugging and unplugging process. An ultrasonic welding area 60 is provided on the tail end of the terminal body to facilitate ultrasonic welding and conduction with the external circuit, ensuring that the terminal has stable electrical and mechanical properties.

[0034] The jack body 10 is processed by cold heading, which has high material utilization rate and fast processing speed, and can achieve high dimensional accuracy. The material is reshaped into a target shape by plastic forming, and almost no waste is generated, which is suitable for mass production. The main structure is made of copper, which ensures excellent conductivity and adaptability to environmental deformation.

[0035] The elastic portion 30 is designed with an inner groove 101, which can effectively scrape off stains during the plugging and unplugging process, keep the terminal clean, and ensure good electrical contact performance; at the same time, the inverted tapered inner wall of the socket enhances the matching contact between the terminal and the socket, improving the stability of signal transmission.

[0036] The elastic ring 201 is made of stainless steel with excellent corrosion resistance, which improves the durability of the connector in muddy and salty water environments and provides better resistance to deformation and relaxation. The inner concave circle design 202 at the opening can effectively prevent the elastic rings 201 from hanging on each other, thereby increasing the portability, feasibility and efficiency of the process assembly.

[0037] The coating of the jack body 10 is made by chemical nickel plating and then silver plating. The double-plating design greatly improves the corrosion resistance of the jack, making it suitable for use in harsh windy and sandy environments such as the wild.

[0038] The assembly method of the terminal is as follows: the elastic part 30 first adopts a rounded closing form to achieve a certain contact and insertion, and then the elastic ring 201 is assembled to the step of the slot 20. The cooperation between the jack body 10 and the shell mainly considers the formation of an interference fit at the fixing part 40, and the addition of a sealing ring at the annular slot 5020 to achieve the function of waterproof sealing.

[0039] The above description is only a preferred embodiment of the present invention and is used to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A highly reliable mud and salt water resistant contact part, characterized in that: include: The terminal body has a head end as a plug-in end and a tail end as a welding end; the end of the plug-in end has an elastic portion; the inner side surface of the elastic portion forms a socket body that matches the power plug, so as to ensure that the power plug can be in close contact with the elastic portion; the inner side surface of the socket body is provided with evenly distributed inner grooves near the end of the socket body.

2. A highly reliable mud and salt water resistant contact according to claim 1, characterized in that: The elastic part is a plurality of uniformly surrounding conductive elastic spring sheets opened along the axial direction.

3. A highly reliable mud and salt water resistant contact piece according to claim 2, characterized in that: The conductive elastic spring sheet has a slot outside thereof near the end of the insertion hole, which is used to fix the elastic ring.

4. A highly reliable mud and salt water resistant contact piece according to claim 2, characterized in that: The inner wall of the conductive elastic spring is in a 1.1° inverted cone structure.

5. A highly reliable mud and salt water resistant contact piece according to claim 2, characterized in that: A through slot is formed between two adjacent conductive elastic spring sheets.

6. A highly reliable mud and salt water resistant contact piece according to claim 2, characterized in that: The terminal body is provided with an annular recess at the end of the elastic part.

7. A highly reliable mud and salt water resistant contact piece according to claim 2, characterized in that: The surface of the jack body is provided with a plating layer, and the plating layer is formed by a double plating process of chemical nickel plating and then silver plating.

8. A highly reliable mud and salt water resistant contact piece according to claim 2, characterized in that: The elastic ring is made of corrosion-resistant stainless steel.

9. A highly reliable mud and salt water resistant contact piece according to claim 2, characterized in that: The opening of the elastic ring adopts a concave circle design.

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