An anti-interference electrical connector

Abstract

This invention relates to the field of electrical connector technology, specifically providing an anti-interference electrical connector, including a connector housing, a female connector electrically connected to the connector housing, a male connector inserted into the female connector, and a locking assembly with multiple locking units. These locking units engage sequentially when the female connector is inserted, and the graded locking gradually eliminates axial movement space, preventing repeated movement of the male and female connectors under external force, reducing wear at the contact points, and ensuring locking force and connection reliability. Simultaneously, when the last locking unit engages, the locking assembly connects all locking units into a whole, changing the pull-out resistance of the male and female connectors from being borne by a single latch to being borne by multiple latches working together, significantly improving resistance to external forces and preventing accidental disengagement. If the pull-out force is greater, it can break through the locking assembly, allowing the female and male connectors to separate, thereby preventing damage to the male and female connectors.

Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and in particular to an anti-interference electrical connector. Background Technology

[0002] An electrical connector, also known as a circuit connector, is a conductor device that bridges two conductors in a circuit, allowing current or signals to flow from one conductor to the other.

[0003] Electrical connectors generally consist of a male and a female connector, which conduct electricity when connected together. In the current technology, male and female connectors are fastened with bolts to ensure the stability of the connection. However, for environments that require frequent plugging and unplugging, bolt fastening is more cumbersome. In addition, for some equipment that is vibrating, high-frequency vibration can also cause the bolts to loosen, resulting in unstable connection.

[0004] There are also some snap-fit ​​connection methods. For example, Chinese patent CN220652482U discloses an adaptive distributed photovoltaic interface device. In this solution, the male connector is inserted into the connection hole one of the body one of the female connector. The sealing ring on the connector contacts the inner wall of the connection hole two of the body one. The snap-fit ​​of the male connector passes through the slot and enters the placement groove. The snap-fit ​​contacts the end of the placement groove. Because the vertical distance between the two connector plates is greater than the vertical distance between the two slots, the male connector cannot be separated from the female connector through the cooperation of the snap-fit ​​and the end of the placement groove, thus completing the connection.

[0005] Although the above-mentioned snap-fit ​​connection method is convenient to operate, it will generate a certain amount of axial movement space after the plug is inserted. When the male and female heads are subjected to external forces, they are prone to repeated movement, which will cause wear at the contact position. The locking force of the worn connector will be affected, the reliability will be reduced, and there will be safety hazards. At the same time, the shell structure in the existing technology is a single shell structure, which will generate interference current during transmission and affect the quality of current transmission. Summary of the Invention

[0006] Therefore, it is necessary to provide an anti-interference electrical connector to address the problem of poor connection stability between the male and female connectors in current electrical connectors.

[0007] The above objectives are achieved through the following technical solutions:

[0008] An anti-interference electrical connector, comprising:

[0009] A connector housing, on which wires are connected, and inside the connector housing is a female connector, to which a male connector is inserted;

[0010] A locking assembly, comprising multiple locking units configured to lock together sequentially when the male and female connectors are inserted.

[0011] A locking assembly configured to connect multiple engaging units into a single unit when the last engaging unit engages.

[0012] Furthermore, the engaging unit includes a engaging groove and a snap fastener. The engaging groove and the snap fastener are positioned correspondingly. Multiple engaging grooves are evenly distributed circumferentially on the outer periphery of the female connector. Multiple sliding grooves are evenly distributed circumferentially on the outer periphery of the male connector. Multiple sliding grooves extend axially along the male connector. A connecting block is axially slidably disposed in each sliding groove. The connecting block is hinged to the snap fastener. The distance between the snap fastener and the corresponding engaging groove gradually increases in a clockwise or counterclockwise direction.

[0013] Furthermore, the locking assembly includes a locking rod and multiple arc-shaped limiting rods. The multiple arc-shaped limiting rods are circumferentially elastically slidably disposed on the connecting block. One end of each arc-shaped limiting rod extends out of the slide groove and is close to the adjacent slide groove. A limiting hole is provided on the connecting block. When the male and female heads are inserted and before the last latch engages with the locking groove, they are on the same plane. The locking rod is axially elastically disposed on the connecting block on the last latch. A wedge-shaped protrusion is provided on the locking rod. The wedge-shaped protrusion can push the arc-shaped limiting rod to rotate along the circumference of the male head to insert into the limiting hole.

[0014] Furthermore, a push block is provided in the snap-fit ​​groove corresponding to the last buckle, and the push block can abut against one end of the locking rod.

[0015] Furthermore, a through groove is provided on the side wall of the slide groove, the slide groove and the through groove are parallel to each other, an arc-shaped limiting tube is sleeved on the outer periphery of the arc-shaped limiting rod, one end of the arc-shaped limiting tube is fixedly connected to the connecting block, the arc-shaped limiting rod and the arc-shaped limiting tube are elastically slidably connected, and the arc-shaped limiting tube is located in the through groove.

[0016] Furthermore, the connecting block is hollow inside, and a rectangular block is fixedly installed on one end of the arc-shaped limiting rod inside the connecting block. A push rod is installed on the end of the rectangular block near the wedge-shaped protrusion, and the push rod slides in contact with the wedge-shaped protrusion. An elastic element is installed on the end of the rectangular block away from the wedge-shaped protrusion. The elastic element is sleeved on the arc-shaped limiting rod, with one end of the elastic element abutting against the rectangular block and the other end of the elastic element abutting against the inner wall of the connecting block.

[0017] Furthermore, a friction block is fixedly installed inside the groove, and the friction block is in frictional contact with the connecting block.

[0018] Furthermore, the buckle is provided with a wedge-shaped block, and the snap-fit ​​groove is provided with a snap-fit ​​block, the wedge-shaped block being able to pass over the snap-fit ​​block to engage the buckle and the snap-fit ​​groove.

[0019] Furthermore, the connector housing has an inner layer and an outer layer, the inner layer being a conductive layer and the outer layer being an insulating layer, with a gap between the inner layer and the outer layer.

[0020] Furthermore, the gap size is 0.3 mm.

[0021] The beneficial effects of this invention are:

[0022] This invention utilizes a locking assembly with multiple locking units. These units engage sequentially during female connector insertion. Compared to traditional snap-fit ​​locking, this staged locking gradually eliminates axial movement, preventing repeated shifting of the male and female connectors under external force, reducing wear at contact points, ensuring locking force and connection reliability, and adapting to environments with frequent insertion / removal or vibration. Simultaneously, when the last locking unit engages, the locking assembly connects all locking units into a single unit, with the arc-shaped limiting rod forming a complete ring, restricting the movement of all connecting blocks and snaps. This transforms the tensile strength of the male and female connectors from being borne by a single snap to being borne by multiple snaps working together, significantly improving resistance to external forces and preventing accidental disengagement. If the tensile force is greater, it can overcome the locking assembly's restraint, allowing the female and male connectors to separate, thus preventing damage to both.

[0023] This invention sets the connector shell as a double-layer structure, with an inner conductive layer and an outer insulating layer, and a 0.3mm air gap between the inner and outer layers. This allows interference current to be introduced into the inner shell first and then attenuated through the gap in the outer shell, reducing the impact on the transmission of internal current signals, ensuring the transmission quality of the electrical connector in complex electromagnetic environments, and adapting to the needs of high-precision electronic equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an anti-interference electrical connector provided in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A left view of an anti-interference electrical connector provided in one embodiment;

[0026] Figure 3 for Figure 2 A cross-sectional view along AA of an anti-interference electrical connector provided in one embodiment;

[0027] Figure 4 for Figure 3 A partial enlarged view of the anti-interference electrical connector X portion provided in one embodiment;

[0028] Figure 5This is a schematic diagram of the male and female heads of an anti-interference electrical connector provided in an embodiment of the present invention;

[0029] Figure 6 for Figure 5 A top view of the male connector of an anti-interference electrical connector provided in one embodiment;

[0030] Figure 7 for Figure 6 A cross-sectional view along BB of the male head of an anti-interference electrical connector provided in one embodiment;

[0031] Figure 8 for Figure 7 A partial enlarged view of the male Y-section of an anti-interference electrical connector provided in one embodiment;

[0032] Figure 9 for Figure 5 A left view of the male connector of an anti-interference electrical connector provided in one embodiment;

[0033] Figure 10 for Figure 9 A cross-sectional view along CC of the male connector of an anti-interference electrical connector provided in one embodiment;

[0034] Figure 11 for Figure 10 A partial enlarged view of the Z-part of the male connector of an anti-interference electrical connector provided in one embodiment;

[0035] Figure 12 This is a top view of the female connector of an anti-interference electrical connector provided in an embodiment of the present invention;

[0036] Figure 13 This is a cross-sectional view of the female connector of an anti-interference electrical connector provided in an embodiment of the present invention;

[0037] Figure 14 for Figure 13 A partially enlarged view of the female U-shaped portion of an anti-interference electrical connector provided in one embodiment;

[0038] Figure 15 This is a schematic diagram of the structure of multiple connecting blocks, snaps, and arc-shaped limiting rods of an anti-interference electrical connector provided in an embodiment of the present invention.

[0039] in:

[0040] 100. Connector housing; 110. Nut; 120. Inner layer; 130. Outer layer; 140. Wire;

[0041] 200. Male connector; 210. Buckle; 211. Wedge block; 220. Connecting block; 221. Limiting hole; 230. Slide groove; 231. Sliding block; 232. Spring; 233. Through groove; 234. Friction block; 240. Arc-shaped limiting tube; 250. Arc-shaped limiting rod; 260. Rectangular block; 261. Push rod; 270. Elastic element; 280. Locking rod; 290. Wedge-shaped protrusion;

[0042] 300, Female head; 310, Snap-fit ​​groove; 311, Snap-fit ​​block; 320, Push-up block. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0044] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] The following reference Figures 1-15 This invention describes an anti-interference electrical connector provided by the present invention.

[0047] An anti-interference electrical connector, suitable for electrical connections in electronic devices, includes a connector housing 100. The connector housing 100 has conductors 140 for conducting electricity or transmitting data. A female connector 300 is internally connected to the connector housing 100, specifically fixed within the housing by a nut 110. A male connector 200 is inserted into the female connector 300. Engaging components are provided on the male connector 200 and the female connector 300 for a tight connection. The engaging components include multiple engaging units configured to engage sequentially when the male connector 200 and the female connector 300 are inserted together. The multiple engaging units do not engage simultaneously. Instead, there is a sequential engagement sequence. Once the first engagement unit engages, it prevents the male connector 200 and female connector 300 from disengaging under other forces. The operator then continues to engage the next engagement unit. As multiple engagement units engage, they can resist greater forces, preventing the male connector 200 and female connector 300 from disengaging under force. Furthermore, the male connector 200 and female connector 300 are equipped with locking components to lock the engagement components. The locking components are configured to connect all engagement units into a single unit when the last engagement unit engages, meaning all engagement units are engaged, thus enhancing the pull-out resistance of the male connector 200 and female connector 300.

[0048] Specifically, the engaging unit in this embodiment includes a engaging groove 310 and a snap fastener 210. The engaging groove 310 and the snap fastener 210 are positioned correspondingly. Since there are multiple engaging units, there are also multiple engaging grooves 310 and snap fasteners 210. This embodiment takes four as an example, that is, four engaging grooves 310 and four snap fasteners 210. The four engaging grooves 310 are evenly distributed circumferentially on the outer periphery of the female connector 300. The outer periphery of the male connector 200 is provided with multiple sliding grooves 230. There are four sliding grooves 230, which extend axially along the male connector 200. Each sliding groove 230 has a connecting block 220 slidably disposed axially. The connecting block 220 is hinged to the snap fastener 210. Figure 5 and Figure 15As shown, two connecting plates are fixedly connected to the end of the connecting block 220 near the female head 300. The two connecting plates are parallel to each other, and a hinge shaft is fixed perpendicularly between the two connecting plates. The buckle 210 is rotatably connected to the hinge shaft, and a torsion spring (not shown in the figure) is provided at the position where the buckle 210 rotates with the hinge shaft. The torsion spring makes the buckle 210 tightly engage with the locking groove 310. When it is necessary to separate the female head 300 and the male head 200, the buckle 210 needs to overcome the force of the torsion spring to disengage from the locking groove 310. When there are more buckles 210 and locking grooves 310, multiple forces need to be overcome simultaneously. The force of the torsion spring is required to disengage the female connector 300 and the male connector 200, thus improving the connection strength between them. Furthermore, to ensure the sequential engagement of multiple latches 210 and multiple engaging slots 310, the multiple connecting blocks 220 in this invention are positioned differently within the slide groove 230; that is, the farthest extension distance of each connecting block 220 within the slide groove 230 differs, and the connecting blocks 220 do not disengage from the slide groove 230. This results in different distances between the multiple latches 210 and their corresponding engaging slots 310. These distances can gradually increase in a clockwise or counterclockwise direction. Figure 5 As shown, in this embodiment, the distance between the multiple latches 210 and the corresponding latching slots 310 gradually increases in the clockwise direction. When the female head 300 and the male head 200 are inserted, the latches 210 that are closest to the corresponding latching slots 310 engage first, and the latches 210 that are farthest from the corresponding latching slots 310 engage last.

[0049] More specifically, the locking assembly in this embodiment includes a locking rod 280 and multiple arc-shaped limiting rods 250, such as... Figures 6-11 As shown, multiple arc-shaped limiting rods 250 are circumferentially elastically slidably disposed on the connecting block 220. One end of each arc-shaped limiting rod 250 extends out of the slide groove 230 and approaches the adjacent slide groove 230. The portion of the arc-shaped limiting rod 250 located on the outer periphery of the male connector 200 is parallel to the arc surface of the outer periphery of the male connector 200. A limiting hole 221 is provided on the connecting block 220. The end of the arc-shaped limiting rod 250 extending out of the slide groove 230 can be inserted into the limiting hole 221 on the adjacent connecting block 220. In this embodiment, multiple arc-shaped limiting rods 250 are respectively disposed on multiple connecting blocks 220. When the female connector 300 and the male connector 200 are not inserted, the position of the multiple arc-shaped limiting rods 250 is synchronized with the position of the connecting block 220, and also gradually approaches the corresponding locking groove 310 in a clockwise direction. Figure 6 and Figure 7As shown, when the initial male connector 200 and female connector 300 are not connected, the multiple arc-shaped limiting rods 250 are not on the same plane but are distributed in a stepped manner along the circumference. Since the arc-shaped limiting rods 250 are connected to the connecting block 220 in this embodiment, during the process of multiple buckles 210 engaging with the engaging groove 310, the buckles 210 abut against the inside of the engaging groove 310. The engaging groove 310 will push the buckles 210 to push the connecting block 220 to move within the sliding groove 230. At this time, the connecting block 220 will drive the arc-shaped limiting rods 250 to move synchronously and sequentially. After the earliest engaged buckle 210 is engaged, it will drive the connecting block 220 connected to it. As the connecting block 220 moves, the arc-shaped limiting rod 250 on the connecting block 220 will move to a position on the same plane as the arc-shaped limiting rod 250 on the next connecting block 220. When the second latch 210 is engaged, the corresponding latching groove 310 will push the latch 210 to drive the arc-shaped limiting rod 250 on the connecting block 220 connected to it, and the previous one moves synchronously, so that the three arc-shaped limiting rods 250 are on the same plane. This process continues until the last latch 210 is engaged with the last latching groove 310. All the arc-shaped limiting rods 250 will be on the same plane.

[0050] In this embodiment, the locking rod 280 is axially elastically slidably disposed on the connecting block 220 of the last latch 210, and the connecting block 220 of the last latch 210 is fixed in the slide groove 230. The connecting block 220 cannot slide in the slide groove 230, that is, the arc-shaped limiting rod 250 on the connecting block 220 cannot move synchronously with the connecting block 220. Figure 11 As shown, the locking rod 280 is provided with a wedge-shaped protrusion 290, which contacts one of the arc-shaped limiting rods 250. When the last latch 210 engages with the last locking groove 310, the last locking groove 310 can push the locking rod 280 to move axially. The wedge-shaped protrusion 290 on the locking rod 280 will push one of the arc-shaped limiting rods 250 to rotate circumferentially, thereby causing multiple arc-shaped limiting rods 250 to rotate synchronously. The multiple arc-shaped limiting rods 250 are respectively inserted into the limiting holes 221 on the adjacent connecting blocks 220. Multiple arc-shaped limiting rods 250 are connected together to form a complete ring. Since the connecting block 220 on the last buckle 210 cannot slide in the groove 230, when the arc-shaped limiting rod 250 is inserted into the limiting hole 221 of the connecting block 220, the complete ring formed by the multiple arc-shaped limiting rods 250 cannot move along the axial direction of the male head 200. At this time, the multiple arc-shaped limiting rods 250 simultaneously restrict the multiple connecting blocks 220, thereby restricting the movement of the multiple buckles 210. At this time, the locking of the male head 200 and the female head 300 is completed.

[0051] It should be noted that, as Figure 14As shown, in this embodiment, a push block 320 is provided in the snap-fit ​​groove 310 corresponding to the last snap 210. The push block 320 can abut against one end of the locking rod 280. When the snap 210 enters the snap-fit ​​groove 310, the push block 320 will push one end of the locking rod 280, so that the locking rod 280 moves axially. The axial movement of the locking rod 280 pushes the arc-shaped limiting rod 250 that is in contact with it through the wedge-shaped protrusion 290.

[0052] In a further embodiment, to facilitate the axial movement of the arc-shaped limiting rod 250 along the slide groove 230, a through groove 233 is provided on the side wall of the slide groove 230, such as... Figure 5 As shown, the through groove 233 and the slide groove 230 are parallel to each other, and an arc-shaped limiting tube 240 is sleeved on the outer periphery of the arc-shaped limiting rod 250. The arc-shaped limiting tube 240 is slidably disposed in the through groove 233, and one end of the arc-shaped limiting tube 240 is fixedly connected to the connecting block 220. The arc-shaped limiting rod 250 and the arc-shaped limiting tube 240 are elastically slidably connected. Specifically, the connecting block 220 has a space inside, and one end of the arc-shaped limiting rod 250 is located inside the connecting block 220. A rectangular block 260 is provided in the slide groove 230 corresponding to the finally engaged buckle 210. One end of the arc-shaped limiting rod 250 located inside the connecting block 220 is fixedly connected to the rectangular block 260. A push rod 261 is vertically and fixedly disposed on the end of the rectangular block 260 near the wedge-shaped protrusion 290. The push rod 261 slides in contact with the wedge-shaped surface of the wedge-shaped protrusion 290. The rectangular block 260 is away from the wedge-shaped protrusion 290. An elastic element 270 is provided on the end. The elastic element 270 is a compression spring. One end of the elastic element 270 abuts against the rectangular block 260, and the other end of the elastic element 270 abuts against the inner wall of the connecting block 220. When the last buckle 210 is not engaged with the locking groove 310, the elastic element 270 pushes the rectangular block 260 closer to the locking rod 280, so that the rectangular block 260 drives the arc-shaped limiting rod 250 to extend out of the arc-shaped limiting tube 240 by a smaller length. That is to say, at this time, one end of the arc-shaped limiting rod 250 is not inserted into the limiting hole 221 of the adjacent connecting block 220. Only when the last buckle 210 is engaged with the locking groove 310, the pushing block 320 pushes the rectangular block 260 through the wedge-shaped protrusion 290 on the locking rod 280. The rectangular block 260 compresses the elastic element 270 to push the arc-shaped limiting rod 250 into the limiting hole 221 of the adjacent connecting block 220.

[0053] It should be noted that, in order to enable the arc-shaped limiting rod 250 connected to the connecting block 220 on the last engaged buckle 210 to push the other arc-shaped limiting rods 250 to move circumferentially, in this embodiment, apart from the arc-shaped limiting rod 250 connected to the last engaged buckle 210, the other arc-shaped limiting rods 250 are configured in the connecting block 220 as follows:

[0054] like Figure 8As shown, a sliding block 231 is provided on the portion of the arc-shaped limiting rod 250 located inside the connecting block 220. The sliding block 231 is slidably disposed inside the connecting block 220. A spring 232 is also provided on the sliding block 231. The arc-shaped limiting rod 250 at one end of the sliding block 231 is aligned with the limiting hole 221. When other arc-shaped limiting rods 250 extend into the limiting hole 221, they will push the arc-shaped limiting rod 250 in the connecting block 220, thereby enabling the arc-shaped limiting rod 250 to push the arc-shaped limiting rods 250 in other connecting blocks 220, thus allowing multiple arc-shaped limiting rods 250 to move circumferentially.

[0055] Specifically, in this embodiment, a friction block 234 is provided in the groove 230. The friction block 234 rubs against the connecting block 220 so that the connecting block 220 can slide in the groove 230 when it is subjected to a certain force, thus preventing the connecting block 220 from sliding in the groove 230 under its own weight.

[0056] It should be noted that when the female connector 300 and the male connector 200 are not inserted together, the connecting blocks 220 in the multiple sliding grooves 230 all extend out of the sliding grooves 230, and the connecting blocks 220 will not easily slide within the sliding grooves 230 under the action of the friction block 234. When the first engaging buckle 210 and the engaging groove 310 engage, as the male connector 200 and the female connector 300 are inserted, the engaging groove 310 will push the buckle 210, the buckle 210 will push the connecting block 220, and the connecting block 220 will move within the sliding groove 230 against the friction of the friction block 234. The connecting block 220 will drive the arc-shaped limiting rod 25 connected to it. 0. Simultaneously, another buckle 210 and the locking groove 310 engage, driving another connecting block 220 to slide within the slide groove 230 against friction. At the same time, it drives the arc-shaped limiting rod 250 connected to it. When the last buckle 210 and the locking groove 310 engage together, it pushes the locking rod 280. The locking rod 280 pushes the arc-shaped limiting rod 250 circumferentially through the wedge-shaped protrusion 290 to insert into the limiting hole 221 of the adjacent connecting block 220, thereby forming a complete ring with multiple arc-shaped limiting rods 250. At the same time, multiple connecting blocks 220 are connected together through multiple arc-shaped limiting rods 250. When the male connector 200 and the female connector 300 are pulled, because multiple connecting blocks 220 are connected together by multiple arc-shaped limiting rods 250, that is, multiple buckles 210 and locking grooves 310 are connected together, the male connector 200 and the female connector 300 can resist a large pulling force. If the pulling force exceeds the force of the multiple buckles 210 and locking grooves 310 locking together, the multiple buckles 210 and locking grooves 310 will all move away from each other by a certain distance. The slot 310 is not completely disengaged. At this time, the locking rod 280 is reset and no longer pushes the arc-shaped limiting rod 250. Under the action of the elastic element 270, the multiple arc-shaped limiting rods 250 disengage from the limiting holes 221 of the adjacent connecting blocks 220. At this time, the multiple connecting blocks 220 are independent of each other, and as the male head 200 and female head 300 are subjected to a large force and gradually separate, the separation sequence of the multiple buckles 210 and the multiple snap-fit ​​slots 310 is the reverse of the installation sequence. For example, when the female connector 300 and the male connector 200 separate, the first latch 210 and the last latch groove 310 to engage will separate. The last latch 210 and the last latch groove 310 to engage will separate first. During the separation process, the force of the latch groove 310 engaging with the latch 210 is greater than the force of the friction block 234 on the connecting block 220. Therefore, when the female connector 300 and the male connector 200 separate, the connecting block 220 will move first in the slide groove 230, and finally the latch 210 will disengage from the latch groove 310.

[0057] It should also be noted that, such as Figure 4 , Figure 14 and Figure 15As shown, a locking block 311 that mates with the latch 210 is provided in the locking groove 310. A wedge-shaped block 211 is provided on the latch 210. When the latch 210 is inserted into the locking groove 310, the wedge-shaped block 211 on the latch 210 contacts the locking block 311, and the latch 210 rotates around the hinge axis against the torsion spring force until the wedge-shaped block 211 passes the locking block 311. After the wedge-shaped block 211 on the latch 210 passes the locking block 311, the latch 210 and the locking groove 310 engage together. In this embodiment, the push block 320 in the last engaged locking groove 310 is as follows... Figure 14 As shown, when the male connector 200 and the female connector 300 are subjected to a large pulling force, the male connector 200 and the female connector 300 will move away from each other by a certain distance. Within this distance, the push block 320 will move away from the locking rod 280, so that the locking rod 280 has room to reset. After the locking rod 280 resets, it will disconnect the multiple connecting blocks 220. The male connector 200 and the female connector 300 can gradually separate under the action of a large pulling force, avoiding the situation where the female connector 300 and the male connector 200 are forcibly separated from the connector housing 100 when subjected to a large pulling force, which would damage the connector.

[0058] In a further embodiment, the connector housing 100 of the present invention has an inner layer 120 and an outer layer 130. The inner layer 120 is a conductive layer. When the female head 300 is connected to the connector housing 100 by the nut 110, the female head 300 is in electrical contact with the inner layer 120 of the connector housing 100. The outer layer 130 of the connector housing 100 is an insulating layer. A gap of 0.3 mm is provided between the inner layer 120 and the outer layer 130. The gap is filled with air. The air gap acts as an insulating gap, which can prevent current from being directly conducted from the inner layer 120 to the outer layer 130 to a certain extent. It also provides certain conditions for the attenuation of interference current.

[0059] The specific usage process of the anti-interference electrical connector provided by the present invention will be described in conjunction with the above embodiments:

[0060] Install female connector 300:

[0061] First, install the female connector 300 onto the connector housing 100 using the nut 110. The terminals of the female connector 300 are electrically connected to the inner layer 120 of the connector housing 100. Then, insert the male connector 200 into the female connector 300.

[0062] Plug-in:

[0063] During the insertion of the male connector 200 into the female connector 300, the distances of the four clips 210 on the outer periphery of the male connector 200 from their corresponding slots 310 are different, such as... Figure 5As shown, the distance between the four latches 210 on the outer periphery of the male connector 200 and the corresponding latching grooves 310 gradually increases in a clockwise direction. When the male connector 200 is inserted into the female connector 300, the latch 210 closest to the corresponding latching groove 310 will engage with the corresponding latching groove 310 first. The wedge-shaped block 211 on the latch 210 will pass over the latching block 311 in the latching groove 310 to achieve the engagement function. The engaged latch 210 will abut against the inside of the latching groove 310. After engagement, the male connector 200 and the female connector 300 continue to move closer to each other. The latching groove 310 pushes the engaged latch 210, and the latch 210 pushes the connecting block 220 to overcome the friction of the friction block 234 and slide in the sliding groove 230. The connecting block 220 drives the arc-shaped limiting tube 240 to slide in the through groove 233. When the arc-shaped limiting tube 240... After the arc-shaped limiting rod 250 is aligned with the limiting hole 221 of the adjacent connecting block 220, the second buckle 210 is engaged with the second locking groove 310, and the buckle 210 abuts against the inside of the corresponding locking groove 310. As the female head 300 and the male head 200 approach each other, the buckle 210 pushes the connecting block 220 to overcome the friction of the friction block 234 and move within the slide groove 230, so that the arc-shaped limiting rod 250 on the connecting block 220 is aligned with the limiting hole 221 of the adjacent connecting block 220. When only the last buckle 210 is not engaged with the locking groove 310, all the arc-shaped limiting rods 250 are on the same plane. When the last buckle 210 engages with the locking groove 310, the push block 320 in the last locking groove 310 can push the locking rod 280 to move axially. Figure 11 As shown, when the locking rod 280 moves upward, it pushes the right push rod 261 through the wedge-shaped protrusion 290. The push rod 261 pushes the rectangular block 260 to move to the right against the force of the elastic element 270. The rectangular block 260 pushes the arc-shaped limiting rod 250 to move within the arc-shaped limiting tube 240. The arc-shaped limiting rod 250 extends into the limiting hole 221 of the adjacent connecting block 220, thereby pushing the arc-shaped limiting rods 250 in other connecting blocks 220 to move synchronously. All the arc-shaped limiting rods 250 extend into the limiting hole 221 of the adjacent connecting block 220. Since the connecting block 220 on the last snap-fit ​​buckle 210 cannot slide within the slide groove 230, multiple connecting blocks 220 are connected together under the action of multiple arc-shaped limiting rods 250. After the last snap-fit ​​buckle 210 and the corresponding snap-fit ​​groove 310 engage, the connection between the female head 300 and the male head 200 is completed.

[0064] Normal unlock:

[0065] When it is necessary to separate the male connector 200 and the female connector 300, the operator can pull the locking rod 280 upwards, causing the wedge-shaped protrusion 290 on the locking rod 280 to disengage from the push rod 261 on the right side. When the push rod 261 disengages from the wedge-shaped protrusion 290, the elastic element 270 on the right side of the rectangular block 260 resets, thereby pushing the rectangular block 260 and pulling the arc-shaped limiting rod 250 to move. The arc-shaped limiting rod 250 disengages from the limiting hole 221 of the adjacent connecting block 220, and the other arc-shaped limiting rods 250 also disengage from the limiting hole 221, thereby releasing the restriction on multiple connecting blocks 220. The operator can then pull apart the male connector 200 and the female connector 300, and the buckle 210 on the male connector 200 will disengage from the locking groove 310 in sequence.

[0066] Unlocked abnormally:

[0067] When the male connector 200 and the female connector 300 are subjected to a large pulling force, because multiple connecting blocks 220 are connected together by multiple arc-shaped limiting rods 250, and multiple buckles 210 and locking grooves 310 are connected together, when subjected to a large pulling force, all buckles 210 and locking grooves 310 simultaneously share the pulling force, which can resist a certain degree of pulling force, making the connection strength between the male connector 200 and the female connector 300 high. If subjected to an even greater pulling force, the multiple buckles 210 and locking grooves 310 in this embodiment simultaneously move away from each other by a certain distance. Before the multiple buckles 210 and locking grooves 310 disengage, the last snapped latch... The push block 320 in the groove 310 provides space for the locking rod 280 to reset. The locking rod 280 is reset under the action of the elastic element 270, thereby causing multiple arc-shaped limiting rods 250 to disengage from the limiting holes 221 of the adjacent connecting blocks 220. After disengagement, the multiple connecting blocks 220 are independent of each other, and the female head 300 and the male head 200 can move away from each other. When the female head 300 and the male head 200 move away from each other, multiple buckles 210 and locking grooves 310 disengage in sequence, and this sequence is the reverse of the installation sequence. This can increase the tensile strength of the male head 200 and the female head 300 while avoiding damage to the male head 200 and the female head 300.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An anti-interference electrical connector, characterized in that, include: A connector housing, on which wires are connected, and inside the connector housing is a female connector, to which a male connector is inserted; A locking assembly, comprising multiple locking units configured to lock together sequentially when the male and female connectors are inserted. A locking assembly configured to connect multiple engaging units into a single unit when the last engaging unit engages; The engaging unit includes a snap-fit ​​groove and a snap-fit ​​buckle. The snap-fit ​​groove and the snap-fit ​​buckle are positioned correspondingly. Multiple snap-fit ​​grooves are evenly distributed circumferentially on the outer periphery of the female connector. Multiple sliding grooves are evenly distributed circumferentially on the outer periphery of the male connector. Multiple sliding grooves extend axially along the male connector. A connecting block is axially slidably disposed in each sliding groove. The connecting block is hinged to the snap-fit ​​buckle. The distance between the snap-fit ​​buckle and the corresponding snap-fit ​​groove gradually increases in a clockwise or counterclockwise direction. The locking assembly includes a locking rod and multiple arc-shaped limiting rods. The multiple arc-shaped limiting rods are circumferentially elastically slidably disposed on the connecting block. One end of each arc-shaped limiting rod extends out of the slide groove and is close to the adjacent slide groove. A limiting hole is provided on the connecting block. When the male and female heads are inserted and before the last latch engages with the locking groove, they are on the same plane. The locking rod is axially elastically disposed on the connecting block on the last latch. A wedge-shaped protrusion is provided on the locking rod. The wedge-shaped protrusion can push the arc-shaped limiting rod to rotate along the circumference of the male head to insert into the limiting hole.

2. The anti-interference electrical connector according to claim 1, characterized in that, A push block is provided in the snap-fit ​​groove corresponding to the last buckle, and the push block can abut against one end of the locking rod.

3. The anti-interference electrical connector according to claim 1, characterized in that, A through groove is provided on the side wall of the slide groove, and the slide groove and the through groove are parallel to each other. An arc-shaped limiting tube is sleeved on the outer periphery of the arc-shaped limiting rod. One end of the arc-shaped limiting tube is fixedly connected to the connecting block. The arc-shaped limiting rod and the arc-shaped limiting tube are elastically slidably connected. The arc-shaped limiting tube is located in the through groove.

4. The anti-interference electrical connector according to claim 3, characterized in that, The connecting block is hollow inside. A rectangular block is fixedly installed on one end of the arc-shaped limiting rod inside the connecting block. A push rod is installed on the end of the rectangular block near the wedge-shaped protrusion. The push rod slides in contact with the wedge-shaped protrusion. An elastic element is installed on the end of the rectangular block away from the wedge-shaped protrusion. The elastic element is sleeved on the arc-shaped limiting rod. One end of the elastic element abuts against the rectangular block, and the other end of the elastic element abuts against the inner wall of the connecting block.

5. The anti-interference electrical connector according to claim 1, characterized in that, A friction block is fixedly installed inside the groove, and the friction block is in frictional contact with the connecting block.

6. The anti-interference electrical connector according to claim 1, characterized in that, The buckle is provided with a wedge-shaped block, and the snap-fit ​​groove is provided with a snap-fit ​​block. The wedge-shaped block can pass over the snap-fit ​​block to engage the buckle and the snap-fit ​​groove.

7. The anti-interference electrical connector according to claim 1, characterized in that, The connector housing has an inner layer and an outer layer, the inner layer being a conductive layer and the outer layer being an insulating layer, with a gap between the inner layer and the outer layer.

8. The anti-interference electrical connector according to claim 7, characterized in that, The gap size is 0.3 mm.

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