Independently sealed connector

Abstract

The utility model discloses an independently sealed connector, relates to the technical field of connectors, and solves the problem that a sealing ring is separated due to air pressure impact. Comprising an integrated shell, a plurality of mutually independent installation cavities are formed in the shell, a connecting terminal is installed in each installation cavity, the connecting terminals are connected with the connecting terminals in butt joint at front end cavity openings of the installation cavities, the connecting terminals are fixedly connected with external wires, and the external wires extend out from rear end cavity openings of the installation cavities. A sealing plug is installed at the rear end cavity opening of each installation cavity in a covering mode, a wire hole allowing an external wire to penetrate through is formed in each sealing plug, and the sealing plugs are in elastic contact with the rear end cavity openings of the corresponding installation cavities and the corresponding external wires to form sealing. The cavity bodies of the mounting cavities independently cope with air pressure changes, even if the air pressure in a certain mounting cavity changes, the air pressure cannot be directly transmitted to the sealing structures of other mounting cavities, and therefore the risk that the sealing plug is disengaged due to air pressure impact is reduced, and adaptability to the air pressure is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to an independently sealed connector. Background Art

[0002] In the application of various sensor connector systems, ensuring waterproof performance is a basic requirement. This goal traditionally relies on the use of sealing elements, such as silicone seals and gaskets, which seal the connector openings to build a closed space, effectively blocking moisture and gas intrusion, and achieving waterproofing. The existing sealing structure uses a whole piece of sealing gasket for sealing, for example: Chinese invention patent: CN101714720A, electrical connector and its sealing ring. Although such designs generally use a single integral sealing gasket to complete the sealing, they still have some defects. In an external environment with temperature fluctuations, the inside of the connector will experience air pressure changes, which may have an impact effect on the sealing ring, sometimes enough to make the sealing ring fall out of the housing, thereby destroying the sealing and reducing the protection level of the equipment. Summary of the invention

[0003] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides an independently sealed connector to solve the problem that the sealing ring is separated by air pressure impact.

[0004] The technical solution of the utility model comprises an integrated shell, a plurality of independent installation cavities are provided in the shell, a connecting terminal is installed in each installation cavity, the connecting terminal is connected with the docking connecting terminal at the front end cavity opening of the installation cavity, the connecting terminal is fixedly connected with an external wire, the external wire extends from the rear end cavity opening of the installation cavity, the rear end cavity opening of each installation cavity is respectively covered with a sealing plug, the sealing plug is provided with a wire hole for the external wire to pass through, the sealing plug is respectively in elastic contact with the rear end cavity opening of the corresponding installation cavity and the corresponding external wire to form a seal.

[0005] By adopting the above technical solution, connecting terminals are installed in each installation cavity, and each installation cavity is equipped with an independent sealing plug, which is elastically in contact with the corresponding external wire to form a seal, allowing each installation cavity to independently respond to changes in air pressure, reducing the need for the overall sealing structure to centrally respond to temperature or air pressure fluctuations. Even if the air pressure in a certain installation cavity changes, it will not be directly transmitted to the sealing structure of other installation cavities, thereby reducing the risk of the sealing plug being dislodged due to air pressure shock, enhancing the adaptability to air pressure, and improving the overall stability and reliability of the connector; the sealing plug is in elastic contact with the external wire and closely fits with the rear end cavity opening of the installation cavity, forming a point-to-point sealing structure. Compared with traditional integrated sealing pads, this design is more adaptable to wires of different diameters and shapes, ensures the sealing effect of each wire outlet, and improves the waterproof and dustproof performance.

[0006] In a possible design, the outer circumference of the sealing plug includes a plurality of soft ring steps, and the soft ring steps are arranged at intervals along the axial direction of the sealing plug.

[0007] With the above design, the soft ring step can elastically deform along the contour of the wire as the external wire is inserted and the sealing plug is installed, and fits tightly against the wire and the wall of the installation cavity to form a tighter sealing interface and enhance the sealing performance. In addition, the soft ring steps arranged at intervals can better adapt to changes in the internal air pressure of the connector and improve the adaptability of the sealing plug.

[0008] In a possible design, the outer periphery of the top end surface of the sealing plug includes an annular sealing step, and the axial dimension of the sealing step is larger than that of the soft ring step.

[0009] With the above design, the larger axial dimension of the sealing step can provide a wider contact surface, which can be used as a positioning reference during installation to ensure that the sealing plug is firmly positioned in the correct position, prevent over-insertion or misalignment, and enhance the installation stability of the entire sealing plug structure.

[0010] In a possible design, a male connector and a female connector are included, and the shell of the male connector and the shell of the female connector are buckled together by a snap mechanism; the snap mechanism includes an elastic buckle strip and a snap hole, and the elastic buckle strip is inserted through the snap hole to form a buckle; the elastic buckle strip includes a supporting strip part, a claw part and a releasing part, and the claw part and the releasing part are located on the top end surfaces of both ends of the supporting strip part, and the releasing part is higher than the top end surface of the supporting strip part and is convex.

[0011] With the above design, the raised shape of the release portion makes it easy for the user to manually apply force, easily separate the shell, facilitate maintenance and replacement, and reduce the difficulty of releasing the buckle.

[0012] In a possible design, an inclined friction surface is provided on the release portion.

[0013] With the above design, the friction surface provides a physical gripping point, which increases the friction coefficient when the finger contacts the release part, so that when the user presses or pulls the release part to separate the connector, the feel is more obvious and controllable, thereby improving the accuracy and smoothness of the release.

[0014] In a possible design, the connecting terminal is divided into a male terminal and a female terminal, the male terminal includes an insert and a lift piece raised from the insert, and the female terminal includes an insert frame, a plug hole is formed in the insert frame, and two pairs of side surfaces of the insert frame are provided with spring-pressed sheets and heat dissipation openings; when the male terminal and the female terminal are plugged in, the insert is inserted into the plug hole, and the spring-pressed sheet is elastically pressed against the insert and the lift piece.

[0015] With the above design, the elastic pressure of the spring pressure sheet improves the tightness of contact, expands the contact area, ensures good electrical contact, reduces contact resistance, and improves the stability and reliability of current transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model when it is not plugged in;

[0017] Figure 2 The structure diagram of the utility model when plugged in Figure 1 ;

[0018] Figure 3 The structure of the utility model when plugged in is shown in FIG. Figure 2 ;

[0019] Figure 4 It is a cross-sectional view of the utility model when plugged in;

[0020] Figure 5 This is a schematic diagram of the structure of the sealing plug of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the male terminal and the female terminal of the utility model when they are about to be connected;

[0022] Among them, 1. shell; 11. installation cavity; 2. connecting terminal; 3. sealing plug; 31. soft ring step; 32. gap; 33. sealing step; 34. wire hole; 4. plug male end; 5. plug female end; 6. snap mechanism; 61. elastic buckle strip; 611. support strip part; 612. claw part; 613. release part; 614. friction surface; 62. snap hole; 21. male terminal; 22. female terminal; 211. insert piece; 212. lift piece; 221. insert frame; 222. plug hole; 223. spring pressure piece; 224. heat dissipation opening. DETAILED DESCRIPTION

[0023] like Figure 1-5The illustrated independently sealed connector includes an integrated housing 1, wherein a plurality of mutually independent mounting cavities 11 are provided in the housing 1 to ensure that the mounting cavities 11 are isolated from each other, and a connection terminal 2 is provided in the chamber of each mounting cavity 11, wherein the connection terminal 2 is connected to the docked connection terminal 2 at the front end cavity opening of the mounting cavity 11, and the connection terminal 2 is fixedly connected to an external wire, and the external wire is reliably connected to the connection terminal 2 by crimping, welding or screw fixing, and the external wire extends out from the rear end cavity opening of the mounting cavity 11, and a sealing plug 3 is respectively covered and installed at the rear end cavity opening of each mounting cavity 11, and a wire hole 34 is provided on the sealing plug 3 for the external wire to pass through, and the sealing plug 3 is respectively in elastic contact with the rear end cavity opening of the corresponding mounting cavity 11 and the corresponding external wire to form a seal. The material of the sealing plug 3 should be selected from rubber or silicone with good elasticity, aging resistance and good sealing performance. During assembly, the external wire is inserted into the wire hole 34 of the sealing plug 3, and then the sealing plug 3 is aligned with the rear end cavity opening of the installation cavity 11 and gently pressed until the sealing plug 3 fits tightly with the cavity opening and the external wire, and forms a seal by its own elastic deformation. When a sealing plug 3 needs to be replaced due to accidental damage, only the sealing plug 3 needs to be replaced, without replacing the entire connector or large-scale disassembly, which is convenient for maintenance and replacement. For different application requirements, the number, size and layout of the sealing plugs 3 can be adjusted to meet the sealing requirements under different specifications and environments, increasing the versatility and scope of application of the connector. In addition, during the sales stage of the product, whether the external wire is installed depends on the actual needs of the buyer's customers. For customers who need a plug-and-play solution, the manufacturer will pre-install the external wire according to the specifications and length requirements provided by the customer before leaving the factory. For those customers who want to install the wires themselves according to the on-site conditions, the connector can only reserve the wire holes 34 and the necessary installation structure, without pre-installing the wires. This method gives customers greater flexibility.

[0024] The outer periphery of the sealing plug 3 includes two to four soft ring steps 31, and the soft ring steps 31 are arranged at intervals along the axial direction of the sealing plug 3, and there are gaps 32 between adjacent soft ring steps 31. The soft ring steps 31 elastically deform along with the outline of the wire, and maintain close contact with the wall of the installation cavity 11, ensuring that each contact point has a good sealing effect and maintaining the integrity of the seal. When the air pressure changes, the gaps 32 between the soft ring steps 31 can serve as a buffer area to reduce the pressure directly acting on the sealing structure and prevent the sealing plug 3 from being disengaged under pressure. At the same time, the soft ring steps 31 made of soft material increase the friction with the installation cavity 11 and the contact surface of the wire, which helps to fix the position of the sealing plug 3 and further prevent the sealing plug 3 from being separated from the cavity opening of the installation cavity 11.

[0025] The outer periphery of the top surface of the sealing plug 3 includes an annular sealing step 33, and the axial dimension of the sealing step 33 is larger than that of the soft ring step 31, which means that the sealing step 33 has a wider contact surface. When the sealing plug 3 is completely placed in the installation cavity 11, the sealing step 33 will be close to the inner wall of the rear end cavity opening of the installation cavity 11, forming the first barrier of the cavity opening sealing, effectively preventing dust, water vapor or other pollutants from invading the installation cavity 11. At the same time, the sealing step 33 can assist in positioning and fixing, ensuring that the sealing plug 3 is firmly in place at the correct position.

[0026] The connector also includes a male connector 4 and a female connector 5, and the shell 1 is divided into two parts, namely the shell 1 of the male connector 4 and the shell 1 of the female connector 5, and the shell 1 of the male connector 4 and the shell 1 of the female connector 5 are buckled together by a snap mechanism 6; the snap mechanism 6 includes an elastic buckle strip 61 and a snap hole 62, and the elastic buckle strip 61 is inserted through the snap hole 62 to form a buckle; the elastic buckle strip 61 includes a supporting strip portion 611, a claw portion 612 and a release portion 613, and the claw portion 612 and the release portion 613 are located on the top end surfaces of the two ends of the supporting strip portion 611, and the release portion 613 is higher than the top end surface of the supporting strip portion 611 and is convex. During the buckling process, the claw portion 612 first enters the clamping hole 62, the support strip portion 611 is elastically bent by force, and the claw portion 612 passes over the opening of the clamping hole 62 until it completely enters the clamping hole 62. At this time, the edge of the claw portion 612 abuts against the hole wall of the clamping hole 62 to form a fixed buckle, and the release portion 613 is located outside the clamping hole 62. When the buckle needs to be released, the user manually applies force to press the release portion 613. Due to the convex shape of the release portion 613, the support strip portion 611 is easily pressed down, and the edge of the claw portion 612 is separated from the hole wall of the clamping hole 62, and then the force is applied backward to make the claw portion 612 pass over the opening of the clamping hole 62 until it is completely separated. If one of the housing 1 of the male connector 4 and the housing 1 of the female connector 5 forms a clamping hole 62, then the other is provided with an elastic buckle strip 61.

[0027] The surface of the release part 613 is provided with a friction surface 614, which provides a good grip point, and the friction contact makes it easier for the user to apply pressure. In order to facilitate unbuttoning, the friction surface 614 can be an inclined surface to better match the force direction of the finger, making it easier to unbutton.

[0028] like Figure 4 , 6The connecting terminal 2 shown is divided into a male terminal 21 and a female terminal 22 that can be plugged into each other. The male terminal 21 includes a plug-in piece 211 and a tilting piece 212 that tilts upward from the plug-in piece 211. The tilting piece 212 is elastic. The female terminal 22 includes an insert frame 221, and a plug hole 222 is formed in the insert frame 221. Two opposite sides of the insert frame 221 are respectively provided with a spring-pressing piece 223 and a heat dissipation opening 224, and the spring-pressing piece 223 is bent toward the inside of the plug hole 222. When the male terminal 21 and the female terminal 22 are plugged, the plug-in piece 211 is inserted into the plug hole 222, and the spring-pressing piece 223 is elastically pressed on the top surface of the plug-in piece 211 and the tilting piece 212, and the bottom surface of the plug-in piece 211 is opposite to the heat dissipation opening 224. The elastic pressure of the spring-pressing piece 223 improves the tightness of the contact between the male terminal 21 and the female terminal 22, ensuring the tightness and efficiency of the electrical connection. The provision of the heat dissipation opening 224 is beneficial to improving the heat exchange efficiency of the connection part. Good heat dissipation capability is also helpful to maintain the stability of electrical performance and improve the stability and efficiency of the entire system.

Claims

1. An independently sealed connector, characterized in that: It comprises an integrated shell, wherein a plurality of mutually independent installation cavities are provided in the shell, a connection terminal is installed in each installation cavity, the connection terminal is connected to the docking connection terminal at the front end cavity opening of the installation cavity, the connection terminal is fixedly connected to an external wire, the external wire extends out from the rear end cavity opening of the installation cavity, the rear end cavity opening of each installation cavity is respectively covered with a sealing plug, the sealing plug is provided with a wire hole for the external wire to pass through, and the sealing plug is respectively elastically in contact with the rear end cavity opening of the corresponding installation cavity and the corresponding external wire to form a seal.

2. The independently sealed connector according to claim 1, characterized in that: The outer circumference of the sealing plug includes a plurality of soft ring steps, and the soft ring steps are arranged at intervals along the axial direction of the sealing plug.

3. The independently sealed connector according to claim 2, characterized in that: The outer periphery of the top end surface of the sealing plug includes an annular sealing step, and the axial dimension of the sealing step is larger than that of the soft ring step.

4. The independently sealed connector according to claim 1 or 2, characterized in that: It comprises a male connector and a female connector, the shell of the male connector and the shell of the female connector are buckled together by a buckle mechanism; the buckle mechanism comprises an elastic buckle strip and a buckle hole, the elastic buckle strip is inserted through the buckle hole to form a buckle; the elastic buckle strip comprises a supporting strip part, a claw part and a releasing part, the claw part and the releasing part are located on the top end surfaces at both ends of the supporting strip part, and the releasing part is higher than the top end surface of the supporting strip part and is convex.

5. The independently sealed connector according to claim 4, characterized in that: The release portion is provided with an inclined friction surface.

6. The independently sealed connector according to claim 1 or 4, characterized in that: The connecting terminal is divided into a male terminal and a female terminal. The male terminal includes an insert and a lift piece that rises from the insert. The female terminal includes an insert frame. A plug hole is formed in the insert frame. Two pairs of side surfaces of the insert frame are provided with spring-pressing pieces and heat dissipation openings. When the male terminal and the female terminal are plugged in, the insert is inserted into the plug hole, and the spring-pressing piece is elastically pressed against the insert and the lift piece.

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