Waterproof cable connector for complex environment

Abstract

The invention provides a waterproof cable connector for a complex environment, and relates to the technical field of cable connectors, the waterproof cable connector comprises a connector female head and a connector male head, the connector female head is internally provided with an outer cladding, the outer cladding is provided with a sliding groove for limiting, the outer cladding is internally provided with an inner groove mechanism, and the inner groove mechanism is provided with a sliding groove for limiting. According to the invention, the elastic sheets are arranged in the limiting grooves of the contact pins, and the lower ends of the elastic sheets are connected with the arc-shaped metal plates through the elastic colloid, so that the elastic sheets can be clamped in the arc-shaped metal plates, and the contact pins can be clamped in the arc-shaped metal plates. The elastic sheet and the arc-shaped metal plate can be always in close contact with the groove formed in the annular metal sleeve, so that the influence of a vibration environment is effectively dealt with, the instant open circuit condition of the connector can be avoided even under a complex vibration working condition, the stability and the reliability of the cable connector in the vibration environment are improved, and the service life of the cable connector is prolonged. And the continuity of electric power or signal transmission is ensured not to be interrupted.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable connectors, and more particularly, relates to a waterproof cable connector for use in complex environments. Background Art

[0002] Connectors are also called connectors. Also known as joints and sockets in China, they generally refer to electrical connectors. These are devices that connect two active components, transmitting current or signals. The male and female ends of a connector are able to transmit information or current through contact, and are also called connectors.

[0003] The current cable connectors have been found to have at least the following technical problems: 1. In complex industrial environments and outdoor projects, cable connectors often face the problem of continuous vibration. The contact components of traditional cable connectors are prone to relative displacement under the influence of vibration, causing the contact points to separate momentarily, leading to circuit breakage, seriously affecting the continuity of power or signal transmission, and posing a significant risk to equipment operation. For example, in vibrating environments such as operating machinery and vehicles, the frequent momentary circuit breakage of traditional connectors can cause adverse consequences such as equipment malfunction and data transmission interruption.

[0004] 2. Over long-term use, the internal contact components of cable connectors are susceptible to the intrusion of impurities such as dust and tiny particles. Traditional connectors often feature surface contact or a few point contacts. Impurities on the contact surface can easily cause contact interruption, impacting the stability of the electrical connection. This accumulation of impurities can especially degrade connector conductivity in dusty factory workshops and outdoor environments with strong winds and sand, leading to even malfunctions and increased maintenance frequency and costs.

[0005] 3. When cable connectors are exposed to dynamic environments such as vibration and shock, the metal contact parts within them will experience relative micro-motion due to the vibration. Long-term micro-motion can cause wear and corrosion at the contact points, reducing the reliability and service life of the connector. Traditional connectors lack effective vibration-buffering structures and are unable to absorb and disperse external vibration energy. This allows vibration to be directly transmitted to the contact parts, accelerating damage to the contact points and making them difficult to adapt to the needs of long-term use in vibrating environments. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a waterproof cable connector for use in complex environments to solve the above problems.

[0007] A waterproof cable connector for complex environments, comprising a female connector and a male connector, the female connector being provided with an outer covering layer, the outer covering being provided with a sliding groove for limiting, the outer covering being provided with an inner groove mechanism, a connecting seat being fixedly installed in the male connector, an insertion rod mechanism being fixedly installed on the connecting seat, the insertion rod mechanism cooperating with the inner groove mechanism to form a cable connector, the insertion rod mechanism comprising a pin, the pin being conical in shape, the left side diameter being smaller than the right side diameter, a limiting groove being provided on the pin, an elastic sheet being provided in the limiting groove provided on the pin, the elastic sheet being used to stabilize the connection between the pin and the inner groove mechanism, the pin being provided with four positioning ring grooves, the diameters between the four positioning ring grooves gradually increasing, a sealing rubber ring being provided in the positioning ring groove provided on the pin, the sealing rubber ring being used to seal the pin and the inner groove mechanism.

[0008] Preferably, the inner groove mechanism includes a plastic shell, which is fixedly installed in the outer shell, and a circular metal sleeve is provided in the plastic shell, and a slot is provided in the circular metal sleeve. The pin is slidably installed in the slot provided in the circular metal sleeve, and a groove is provided on the inner wall of the slot provided in the circular metal sleeve. The groove provided in the circular metal sleeve is used to place an elastic sheet, and polyurethane PU is filled between the circular metal sleeve and the plastic shell, and the material of the polyurethane PU is an elastomer with a high damping coefficient.

[0009] Preferably, the left end of the elastic sheet is fixedly mounted in a limiting groove opened by the pin, and the right end of the elastic sheet is slidably mounted in the limiting groove opened by the pin. A first metal protrusion is fixedly mounted on the upper end of the elastic sheet, and an elastic colloid is fixedly mounted on the lower end of the elastic sheet. The elastic colloid is slidably mounted on the pin, and an arc-shaped metal plate is fixedly mounted on the lower end of the elastic colloid. A second metal protrusion is provided at the lower end of the arc-shaped metal plate.

[0010] Preferably, an annular locking sleeve is rotatably mounted on the female connector, an outer ring screw sleeve is fixedly mounted on the male connector, the annular locking sleeve is mounted on the outer ring screw sleeve through threads, a raised block is provided in the outer ring screw sleeve, and the raised block is slidably mounted in a slide groove provided in the outer covering layer.

[0011] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, an elastic sheet is provided in the limiting groove of the pin, and the lower end of the elastic sheet is connected to the arc-shaped metal plate through an elastic colloid. By utilizing the elastic properties of the elastic sheet and the elastic colloid, the elastic sheet and the arc-shaped metal plate can always maintain close contact with the groove formed in the annular metal sleeve. This design effectively copes with the influence of the vibration environment and can avoid momentary disconnection of the connector even under complex vibration conditions, thereby greatly improving the stability and reliability of the cable connector when used in a vibration environment and ensuring the continuity of power or signal transmission without interruption.

[0012] In the present invention, a first metal protrusion is provided on the elastic sheet and a second metal protrusion is provided on the arc-shaped metal plate. When these protrusions contact the slots provided in the annular metal sleeve, multiple and small contact areas are formed. When problems occur in the overall connection between the pin and the annular metal sleeve, such as slight looseness or offset, the first metal protrusion and the second metal protrusion can still maintain an effective path with the annular metal sleeve. At the same time, the multi-contact design can push away tiny particles (such as dust) during the contact process, avoiding contact interruption caused by particle obstruction, and significantly enhancing the stability of the electrical connection and the anti-interference ability of the connector in complex environments.

[0013] In the present invention, a dual elastic mechanism consisting of an elastic sheet and an elastic colloid is provided to achieve dual protection of connection stability. The elastic sheet may experience a decrease in elasticity due to metal fatigue during long-term use, but at this time the elastic colloid can still exert its elastic effect to bounce the elastic sheet, ensuring that the elastic sheet maintains contact with the groove of the annular metal sleeve, thereby extending the service life of the connector, reducing the risk of the entire connector not being able to work normally due to failure of a single elastic component, and improving the durability and reliability of the connector.

[0014] In the present invention, four positioning ring grooves with gradually increasing diameters are provided on the pin, and a sealing rubber ring is arranged in the positioning ring groove. When the pin is inserted into the slot of the circular metal sleeve, the tapered pin design causes the sealing rubber ring to move outward under the action of extrusion, and finally fits tightly in the positioning ring groove, forming a multi-layer sealing structure. This design greatly improves the sealing between the pin and the inner groove mechanism, can effectively prevent moisture, dust and other impurities from entering the interior of the connector, ensures that the connector can still maintain good insulation performance and connection performance in complex environments such as humid and dusty environments, and improves its waterproof and dustproof capabilities.

[0015] In the present invention, by filling polyurethane PU, an elastomer material with a high damping coefficient, between the circular metal sleeve and the plastic shell, the characteristics of polyurethane PU are utilized to absorb and disperse the vibration energy transmitted to the pin and the circular metal sleeve. This design effectively buffers the impact of external vibration on the internal structure of the connector, greatly reduces the relative micro-motion of the contact point between the pin and the circular metal sleeve, thereby inhibiting the occurrence of micro-motion wear and corrosion, extending the service life of the connector, ensuring its connection stability and reliability during long-term use, and enabling it to better adapt to the use requirements in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a structural schematic diagram of the female connector of the present invention; Figure 3 It is a structural schematic diagram of the male connector of the present invention; Figure 4 It is a schematic structural diagram of the pin of the present invention; Figure 5 It is a schematic structural diagram of the curved metal plate of the present invention; Figure 6 1 is a schematic structural diagram of the plastic housing of the present invention; Figure 7 It is a structural schematic diagram of the sealing rubber ring of the present invention; Figure 8 This invention Figure 4 A magnified schematic diagram of the structure at point A.

[0017] In the figure, the correspondence between the component names and the figure numbers is: 1. Pin; 2. Positioning ring groove; 3. Sealing rubber ring; 4. Limiting groove; 5. Elastic sheet; 6. First metal protrusion; 7. Elastic colloid; 8. Arc-shaped metal plate; 9. Second metal protrusion; 10. Plastic shell; 11. Groove; 12. Polyurethane PU; 13. Circular metal sleeve; 14. Slot; 15. Connecting seat; 16. Connector male head; 17. Outer ring screw sleeve; 18. Connector female head; 19. Outer layer; 20. Annular locking sleeve. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0019] See also Figures 1-8The present invention provides a waterproof cable connector for complex environments, including a female connector 18 and a male connector 16. An outer sheath 19 is provided inside the female connector 18, and a sliding groove for limiting is opened on the outer sheath 19. An inner groove mechanism is provided inside the outer sheath 19. A connecting seat 15 is fixedly installed in the male connector 16, and an insertion rod mechanism is fixedly installed on the connecting seat 15. The insertion rod mechanism cooperates with the inner groove mechanism to form a cable connector.

[0020] The insertion rod mechanism includes a pin 1, which is conical in shape, with a diameter on the left side smaller than that on the right side. A limiting groove 4 is provided on the pin 1, and an elastic sheet 5 is provided in the limiting groove 4 provided on the pin 1. The elastic sheet 5 is used to stabilize the connection between the pin 1 and the inner groove mechanism. Four positioning ring grooves 2 are provided on the pin 1, and the diameters between the four positioning ring grooves 2 gradually increase. A sealing rubber ring 3 is provided in the positioning ring groove 2 provided on the pin 1, and the sealing rubber ring 3 is used to seal the pin 1 and the inner groove mechanism.

[0021] The inner groove mechanism includes a plastic shell 10, which is fixedly installed in the outer layer 19. A circular metal sleeve 13 is provided in the plastic shell 10, and a slot 14 is provided in the circular metal sleeve 13. The pin 1 is slidably installed in the slot 14 provided in the circular metal sleeve 13. Since the shape of the pin 1 is conical and the diameter of the positioning ring groove 2 gradually increases, when the connector is installed, the sealing rubber ring 3 can be squeezed by the pin 1 and the slot 14 provided by the circular metal sleeve 13 to move to the outermost positioning ring groove 2 and tightly seal the pin 1 and the circular metal sleeve 13. The inner wall of the slot 14 provided by the circular metal sleeve 13 is provided with a recessed groove. Groove 11, the groove 11 opened by the annular metal sleeve 13 is used to place the elastic sheet 5, and the inner groove height of the groove 11 is lower than the height of the elastic sheet 5. When the elastic sheet 5 slides into the groove 11 opened by the annular metal sleeve 13, the top of the inner wall of the groove 11 opened by the annular metal sleeve 13 will still exert a certain pressure on the elastic sheet 5. Polyurethane PU12 is filled between the annular metal sleeve 13 and the plastic shell 10. The material of polyurethane PU12 is an elastomer with a high damping coefficient. Polyurethane PU12 can absorb and disperse the vibration energy transmitted to the pin 1 and the annular metal sleeve 13, greatly reducing the relative micro-motion of the contact point, thereby inhibiting micro-motion wear and corrosion.

[0022] The left end of the elastic sheet 5 is fixedly installed in the limiting groove 4 opened by the pin 1, and the right end of the elastic sheet 5 is slidably installed in the limiting groove 4 opened by the pin 1. The upper end of the elastic sheet 5 is fixedly installed with a first metal protrusion 6. When the elastic sheet 5 is installed in the slot 14 opened by the annular metal sleeve 13, the first metal protrusion 6 on the upper end of the elastic sheet 5 will contact the top of the inner wall of the groove 11 opened by the annular metal sleeve 13. Since the number of the first metal protrusions 6 is large and the area of ​​the contact point with the annular metal sleeve 13 is small, when there is a problem in the overall connection between the pin 1 and the annular metal sleeve 13, the first metal protrusion 6 and the annular metal sleeve 13 still maintain a passage, and the multi-contact design can push away tiny particles (such as dust) to avoid contact interruption. The lower end of the elastic sheet 5 is fixedly installed with an elastic rubber Body 7, the elastic colloid 7 is slidably installed on the pin 1, and an arc-shaped metal plate 8 is fixedly installed at the lower end of the elastic colloid 7. When the elastic sheet 5 is squeezed, the elastic colloid 7 and the arc-shaped metal plate 8 will be driven downward first. When the arc-shaped metal plate 8 contacts the inner wall of the slot 14 opened by the annular metal sleeve 13, the elastic colloid 7 will bend. Due to the characteristics of the material of the elastic colloid 7, it can bend, and after the elastic sheet 5 completely enters the groove 11 opened by the annular metal sleeve 13, the elastic colloid 7 will reset a distance, thereby applying bidirectional pressure to the elastic sheet 5 and the arc-shaped metal plate 8. A second metal protrusion 9 is provided at the lower end of the arc-shaped metal plate 8. At this time, the second metal protrusion 9 will also contact the slot 14 opened by the groove 11, and its function is the same as the first metal protrusion 6.

[0023] An annular locking sleeve 20 is rotatably mounted on the female connector 18, and an outer ring screw sleeve 17 is fixedly mounted on the male connector 16. The annular locking sleeve 20 is threadedly mounted on the outer ring screw sleeve 17. A raised block is provided inside the outer ring screw sleeve 17, and the raised block is slidably mounted in a slide groove provided in the outer covering 19.

[0024] Working principle: The first step is to insert the pin 1 of the male connector 16 into the inner groove mechanism of the female connector 18. The pin 1 is conical in design, with the diameter on the left side smaller than the diameter on the right side, and four positioning ring grooves 2 with gradually increasing diameters are provided on the pin 1. A sealing rubber ring 3 is installed in each positioning ring groove 2. When the pin 1 is inserted into the slot 14 of the circular metal sleeve 13, the conical design of the pin 1 causes the sealing rubber ring 3 to move outward under the action of extrusion, and finally fits tightly in the positioning ring groove 2 with the largest diameter. This process forms a multi-layer sealing structure, which effectively prevents moisture and dust from entering the interior of the connector.

[0025] In the second step, an elastic sheet 5 is installed in the limiting groove 4 of the pin 1. When the pin 1 is fully inserted into the slot 14, the elastic sheet 5 slides into the groove 11 of the annular metal sleeve 13. The upper end of the elastic sheet 5 is provided with a first metal protrusion 6, and the lower end is connected to the arc-shaped metal plate 8 through an elastic colloid 7. The lower end of the arc-shaped metal plate 8 is provided with a second metal protrusion 9. During the extrusion process: the first metal protrusion 6 contacts the top of the inner wall of the groove 11 to form a multi-point electrical path. Even if there are tiny particles such as dust, the particles can be pushed away to maintain a stable connection. The elastic colloid 7 bends after being squeezed, and then resets and applies bidirectional pressure to the elastic sheet 5 and the arc-shaped metal plate 8, so that the second metal protrusion 9 is in close contact with the inner wall of the slot 14, further enhancing the reliability of the electrical connection.

[0026] In the third step, polyurethane PU12 is filled between the annular metal sleeve 13 and the plastic shell 10. Polyurethane PU12 has a high damping coefficient and can absorb and disperse the vibration energy transmitted from the outside, greatly reducing the relative micro-motion between the pin 1 and the annular metal sleeve 13, thereby inhibiting micro-motion wear and corrosion and extending the service life of the connector.

[0027] In the fourth step, an annular locking sleeve 20 is installed on the female connector 18, and an outer ring screw sleeve 17 is fixed on the male connector 16. By rotating the annular locking sleeve 20, it is threadedly connected with the outer ring screw sleeve 17 to tightly lock the male and female heads. The raised block in the outer ring screw sleeve 17 is slidably installed in the sliding groove of the outer layer 19 to ensure that the connector will not shift or loosen during the locking process.

[0028] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A waterproof cable connector for use in complex environments, comprising a female connector (18) and a male connector (16), characterized in that: An outer sheath (19) is provided inside the female connector (18), a sliding groove for limiting is provided on the outer sheath (19), an inner groove mechanism is provided inside the outer sheath (19), a connecting seat (15) is fixedly installed inside the male connector (16), an inserting rod mechanism is fixedly installed on the connecting seat (15), and the inserting rod mechanism cooperates with the inner groove mechanism to form a cable connector; The insertion rod mechanism includes an insertion pin (1), the insertion pin (1) is tapered, and the diameter of the left side is smaller than the diameter of the right side. A limiting groove (4) is provided on the insertion pin (1), and an elastic sheet (5) is provided in the limiting groove (4) provided on the insertion pin (1). The elastic sheet (5) is used to stabilize the connection between the insertion pin (1) and the inner groove mechanism. Four positioning ring grooves (2) are provided on the insertion pin (1), and the diameters between the four positioning ring grooves (2) gradually increase. A sealing rubber ring (3) is provided in the positioning ring groove (2) provided on the insertion pin (1), and the sealing rubber ring (3) is used to seal the insertion pin (1) and the inner groove mechanism.

2. A waterproof cable connector for use in complex environments as claimed in claim 1, characterized in that: The inner groove mechanism comprises a plastic shell (10), and the plastic shell (10) is fixedly installed in the outer covering layer (19).

3. A waterproof cable connector for use in complex environments as claimed in claim 2, characterized in that: A circular metal sleeve (13) is provided in the plastic housing (10), and a slot (14) is provided in the circular metal sleeve (13).

4. A waterproof cable connector for use in complex environments as claimed in claim 3, characterized in that: The pin (1) is slidably mounted in a slot (14) provided in the annular metal sleeve (13); a groove (11) is provided on the inner wall of the slot (14) provided in the annular metal sleeve (13); and the groove (11) provided in the annular metal sleeve (13) is used to place the elastic sheet (5).

5. A waterproof cable connector for use in complex environments as claimed in claim 4, characterized in that: The space between the annular metal sleeve (13) and the plastic shell (10) is filled with polyurethane PU (12), and the material of the polyurethane PU (12) is an elastomer with a high damping coefficient.

6. A waterproof cable connector for use in complex environments as claimed in claim 5, characterized in that: The left end of the elastic piece (5) is fixedly mounted in the limiting groove (4) provided on the insertion pin (1), and the right end of the elastic piece (5) is slidably mounted in the limiting groove (4) provided on the insertion pin (1).

7. A waterproof cable connector for use in complex environments as claimed in claim 6, characterized in that: A first metal protrusion (6) is fixedly mounted on the upper end of the elastic sheet (5), and an elastic colloid (7) is fixedly mounted on the lower end of the elastic sheet (5). The elastic colloid (7) is slidably mounted on the pin (1).

8. A waterproof cable connector for use in complex environments as claimed in claim 7, characterized in that: An arc-shaped metal plate (8) is fixedly mounted on the lower end of the elastic colloid (7), and a second metal protrusion (9) is provided on the lower end of the arc-shaped metal plate (8).

9. A waterproof cable connector for use in complex environments as claimed in claim 8, characterized in that: An annular locking sleeve (20) is rotatably mounted on the female connector (18), an outer ring screw sleeve (17) is fixedly mounted on the male connector (16), and the annular locking sleeve (20) is mounted on the outer ring screw sleeve (17) via a thread.

10. A waterproof cable connector for use in complex environments as claimed in claim 9, characterized in that: A protruding block is provided in the outer ring screw sleeve (17), and the protruding block is slidably installed in a sliding groove provided in the outer covering layer (19).

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