Plug connector, socket connector and cable connector

Abstract

The utility model relates to the field of electric connectors, and discloses a plug connector, a socket connector and a cable connector, which comprise a plug body and a dustproof part, the dustproof part is provided with a dustproof end which detachably covers the first plugging end and a limiting end which movably sleeves the first plugging end to limit the dustproof end on the plug body. The dustproof part is arranged on the first plugging end of the plug body, so that the dustproof end of the dustproof part shields the first plugging end when the plug body is not used, dust and other substances are prevented from entering the first plugging end to influence the service life, the safety is improved, meanwhile, the limiting end enables the dustproof part to be always connected to the plug body, and the dustproof part is prevented from being damaged. And the dust-proof end is prevented from being lost when not used to influence the next use.

Description

Technical Field

[0001] The utility model relates to the field of electrical connectors, in particular to a plug connector, a socket connector and a cable connector. Background Art

[0002] A cable connector is a device for connecting cables, which can connect the conductors and insulating layers of cables to other cables or devices to transmit electricity or signals.

[0003] The cable connector is composed of a plug connector and a socket connector, and the transmission of electricity is realized through the plug-in cooperation between the plug connector and the socket connector. The plug connector and the socket connector are usually made of conductors and insulating materials to ensure that they can withstand current and voltage and maintain stable connection. In order to facilitate the plugging and unplugging with the socket connector, the plug connector has large openings and gaps. These openings and gaps are exposed to various environments when not in use. There are a large number of dust, particles, water droplets, etc. in the environment where the plug exists. These substances such as dust and particles can easily enter the inside of the plug through the openings and gaps of the plug, which can easily cause accidents such as short circuits and electric leakage, affecting the safety and stability of the cable connector. Summary of the Utility Model

[0004] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: to provide a plug connector, a socket connector and a cable connector to solve the problem that external substances are easy to enter the inside of the plug connector when it is not in use.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a plug connector including a plug body and a dust-proof part. The plug body has a first plug-in end for plugging and cooperating with a socket connector. The dust-proof part has a dust-proof end detachably sleeved on the first plug-in end and a limiting end movably sleeved on the first plug-in end. The limiting end is used to limit the dust-proof end on the plug body, so that the dust-proof end blocks the first plug-in end when the plug body is not in use, thereby preventing substances such as dust from entering and affecting the service life and use safety.

[0006] Further, the plug body includes a first rubber sleeve and a first terminal arranged in the first rubber sleeve. The first terminal has a first connection end and a first mating end. The rear end of the first rubber sleeve is connected with a first input wire electrically connected to the first connection end. The first mating end of the first terminal passes through the front end of the first rubber sleeve along a plugging direction, so as to realize conduction.

[0007] Further, the first terminals are configured to be multiple and distributed at intervals from each other; the first plug end includes a first connector head extending along the plugging direction from the front end face of the first rubber sleeve and a first slot recessed from the front end of the first connector head. A first partition is formed in the first slot corresponding to the first terminals to divide the first slot into a plurality of first sub-slots corresponding to the first terminals in the radial direction. The first mating ends of the first terminals respectively extend from the first rubber sleeve into the first sub-slots along the plugging direction, so that the plug connector can be connected to the socket connector and rotation can be prevented.

[0008] Further, the dust-proof portion includes a dust-proof cover detachably sleeved on the first connector head for covering the first slot, and the dust-proof cover is defined as the dust-proof end to block the first plug end for dust prevention.

[0009] Further, the dust-proof cover is screwed onto the first connector head, and the dust-proof portion further includes a gasket that seals the notch of the first slot when the dust-proof cover is screwed onto the first connector head, so as to be used for sealing and waterproofing.

[0010] Further, a connecting post is formed on the end face of the dust-proof cover facing away from the first connector head. The dust-proof portion further includes a screw screwed on the connecting post and a connecting band with one end sleeved on the screw and clamped on the connecting post by the screw. The connecting band is made of a flexible material and the other end has a ferrule sleeved on the first input wire. The ferrule is defined as the limiting end, so as to avoid the dust-proof cover from falling off after the dust-proof cover is removed and facilitate the next use.

[0011] The present utility model further provides a socket connector: including a socket body and a connecting sleeve rotatably connected to the socket body. The socket body has a second plug end for plugging and mating with the plug body, and the connecting sleeve is used for detachably connecting to the plug body to realize the connection between the plug body and the socket body.

[0012] Further, the socket body includes a second rubber sleeve and second terminals arranged in the second rubber sleeve. A second input wire is connected to the rear end of the second rubber sleeve. The second terminals have a second connecting end and a second mating end for electrically connecting to the second input wire. A mating cavity is formed in the second mating end and penetrates along the plugging direction for the first mating end to be plugged therein. A second plug end for passing through the first slot is formed on the front end face of the second rubber sleeve along the plugging direction. An anti-fooling groove for the first partition to penetrate therein is formed at the position corresponding to the partition on the second plug end, and a second slot for the first mating end to pass through is formed at the position corresponding to each first mating end on the second plug end. The second slot communicates with the mating cavity along the plugging direction to facilitate connection with the first plug end and prevent rotation.

[0013] The present utility model further provides a cable connector, which includes the plug connector and the socket connector described above, and realizes conduction through the cooperation of the plug connector and the socket connector.

[0014] Furthermore, both the first rubber sleeve and the second rubber sleeve include a plug joint and a rubber-coated sleeve injection-molded and connected to the rear end of the plug joint. A first tight flange is formed on the outer wall of the rear end of the plug joint to ensure a tighter connection between the plug joint and the rubber-coated sleeve; the first connection end and the second connection end pass through the rubber-coated sleeve, and the first mating end and the second mating end pass through the plug joint. Second tight flanges are formed on the outer walls of the first connection end and the second connection end respectively, so that the connection between the first terminal and the first rubber sleeve is firmer and the connection between the second terminal and the second rubber sleeve is firmer.

[0015] The plug connector, socket connector and cable connector of the present utility model have at least the following beneficial effects: by providing a dust-proof part on the first plug end of the plug body, the dust-proof end of the dust-proof part covers the first plug end when the plug body is not in use, preventing substances such as dust from entering the first plug end and affecting the service life, improving safety. At the same time, the limiting end makes the dust-proof part always connected to the plug body, preventing the dust-proof end from being lost when not in use and affecting the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the plug connector of the present utility model;

[0018] Figure 2 is an exploded view of the plug connector of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the plug body of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the socket connector of the present utility model;

[0021] Figure 5 is an exploded view of the socket connector of the present utility model.

[0022] The meanings of the reference numerals in the drawings are as follows:

[0023] Plug body - 1; First plug end - 1a; First rubber sleeve - 11; First plug head - 111; First intermediate section - 1111; First connection section - 1112; First connection head - 1113; First tight flange - 1114; First slot - 1115; First partition - 1116; First terminal - 12; First connection end - 121; First mating end - 122; First wide - mouth section - 123; First input wire - 13;

[0024] Dust - proof part - 2; Dust - proof end - 2a; Limiting end - 2b; Dust - proof cover - 21; Second cavity - 211; Connecting post - 212; Gasket - 22; Screw - 23; Connecting belt - 24; First sleeve hole - 241; Ferrule - 242; Second sleeve hole - 243;

[0025] Socket body - 3; Second plug end - 3a; Second rubber sleeve - 31; Second plug head - 311; Second intermediate section - 3111; Second connection section - 3112; Second connection head - 3113; Third tight flange - 3114; Second cavity - 3115; Anti - misinsertion groove - 3116; Third partition - 3117; Outer edge part - 3118; Second slot - 3119; Encapsulated rubber sleeves - 112, 312; Second terminal - 32; Second connection end - 321; Second mating end - 322; Second wide - mouth section - 323; Second tight flanges - 124, 324; Second input wire - 33;

[0026] Connection sleeve - 4;

[0027] Sealing ring - 5. Detailed implementation mode

[0028] The following further describes the present utility model with reference to the accompanying drawings.

[0029] As Figures 1 to 5 shown, the cable connector of the present utility model includes a plug connector and a socket connector, and the circuit of the cable connector is conducted through the insertion and extraction of the plug connector and the socket connector.

[0030] As Figures 1 to 3 shown, the plug connector of the present utility model includes a plug body 1 and a dust - proof part 2. The plug body 1 is used for insertion and extraction connection with the socket connector to achieve conduction, and the dust - proof part 2 is used to block the part of the plug body 1 that is used for insertion and extraction cooperation with the socket connector, so as to prevent substances such as dust from entering the inside of the plug body 1 through structures such as holes and grooves, causing problems such as poor contact, and improving the service life and safety of the plug body 1.

[0031] In the content defined by this embodiment, the plug body 1 has a first plug end 1a for plugging and mating with a socket connector, and the plug body 1 realizes on-off through the insertion and extraction between the first plug end 1a and the socket connector. The plug body 1 includes a first rubber sleeve 11, a first terminal 12 disposed within the first rubber sleeve 11, and a first input wire 13 connected to the rear end of the first rubber sleeve 11 and electrically connected to the first terminal 12. The first rubber sleeve 11 is used to protect and position the first terminal 12, and the first terminal 12 cooperates with the first input wire 13 to transmit electrical signals. In this embodiment, the first rubber sleeve 11 includes a plug joint and a rubber-coated sleeve 112 injection-molded and connected to the rear end of the plug joint. One end of the first terminal 12 is connected to the plug joint, and the other end is located within the rubber-coated sleeve 112 after injection molding. The end of the first input wire 13 is also located within the rubber-coated sleeve 112 by the injection molding of the rubber-coated sleeve 112 after being electrically connected to the first terminal 12, so as to ensure the connection firmness between the first terminal 12, the first input wire 13, and the plug joint while the rubber-coated sleeve 112 protects the first terminal 12.

[0032] In the present utility model, the plug connector of the plug is defined as the first plug 111. The first plug 111 includes a first intermediate section 1111 in a cylindrical shape, a first connecting section 1112 extending from the front end of the first intermediate section 1111 along a plugging direction (i.e., the axial direction) towards the rear end, and a first connecting head 1113 extending from the front end of the first intermediate section 1111 along the plugging direction towards the front end. The first connecting section 1112 can be cylindrical or in other suitable shapes. On the outer wall of the first connecting section 1112, there is provided a threaded first tight flange 1114 to increase the connection tightness with the first connecting section 1112 after the encapsulation sleeve 112 is injection-molded. To facilitate holding the first plug 111, the first connecting section 1112, the first intermediate section 1111, and the first connecting head 1113 are coaxially arranged, and the diameter of the first intermediate section 1111 is greater than the diameters of the first connecting section 1112 and the first connecting head 1113. To further increase the connection firmness between the encapsulation sleeve 112 and the first connecting section 1112, a first cavity is recessed on the rear end face of the first connecting section 1112, so that when the encapsulation sleeve 112 is injection-molded, the liquid plastic flows into the first cavity and enters the first cavity after solidification. A first slot is recessed on the front end face of the first connecting head 1113. The first slot is in a cylindrical cavity structure and penetrates the front end face of the first connecting head 1113 along the axial direction, so that the corresponding structure of the socket connector can penetrate into it. To facilitate the installation of the first terminal 12, a first insertion cavity corresponding to the first terminal 12 and penetrating the first cavity can be opened along the axial direction towards the rear end on the first slot. The front end of the first terminal 12 is inserted into the first insertion cavity and extends forward into the first slot. The traditional first input wire 13 usually has three wire cores inside. Correspondingly, the number of the first terminals 12 and the first insertion cavities are both configured to be three or more and are spaced apart from each other, and the first insertion cavities are spaced apart around the axis to avoid interfering with each other. A first partition 1116 is formed in the first slot corresponding to each first terminal 12 to divide the first slot into a plurality of first sub-slots 1115 corresponding to the first terminals 12 in the radial direction. Among them, the first partition 1116 divides the first slot into three first sub-slots 1115 in a radial shape, and each first insertion cavity is respectively opened from the first sub-slot 1115 towards the rear end, so that the first terminals 12 are spaced apart from each other. To avoid interference between the wire cores of the first input wire 13 in the first cavity, a second partition is provided in the first cavity in the manner of the first partition 1116. In this embodiment, the first connecting head 1113 and the first slot are defined as the first plug end 1a for plugging and unplugging cooperation with the socket connector, and the encapsulation sleeve 112 is injection-molded by a mold. After the assembly of each first terminal 12 with the wire core and the first plug 111 is completed, the mold is sleeved outside the wire core, the first terminal 12, and the first connecting section 1112, and the encapsulation sleeve 112 is formed by injecting liquid plastic and cooling and solidifying.

[0033] In this embodiment, the first terminal 12 is made of a conductive metal material and has a first connection end 121 and a first mating end 122. The first connection end 121 is used to connect with the wire core of the conductive element, and the first mating end 122 is used to cooperate with the socket connector to achieve on-off. Among the contents defined in this embodiment, the first terminal 12 has a cylindrical structure. At the end of the first connection end 121 of the first terminal 12, there is a first wide-mouth section 123 with a diameter larger than that of the first connection end 121. The inside of the first wide-mouth section 123 is hollow and arranged with an open side facing the rear end for the wire core to pass through. To facilitate the installation of the wire core, a first notch is provided on the first wide-mouth section 123 so that the wire core can be snapped into the first wide-mouth section 123 from the first notch. The first mating end 122 can be a solid structure and extend through the first insertion cavity into the first slot 1115, so that the first mating end 122 penetrates through the front end of the first rubber sleeve 11. Preferably, in order to make the connection between the encapsulation sleeve 112 and the first terminal 12 firmer after the encapsulation sleeve 112 is injection-molded, a circular second tight flange 124 is circumferentially protruded on the outer wall of the first connection end 121 to increase the connection tightness between the encapsulation sleeve 112 and the first terminal 12.

[0034] In this embodiment, the dust-proof part 2 has a dust-proof end 2a detachably sleeved on the first plug end 1a and a limiting end 2b movably sleeved on the first plug end 1a. The dust-proof end 2a is used to cover the first connection head 1113 to block the first slot, preventing substances such as dust from entering and affecting the service life. The limiting end 2b is movably arranged on the first rubber sleeve 11 to limit the dust-proof end 2a on the plug body 1, preventing the dust-proof cover 21 from being lost after being removed. Among the contents defined in this embodiment, the dust-proof part 2 includes a dust-proof cover 21 detachably sleeved on the first connection head 1113 for blocking the first slot, a gasket 22 movably arranged in the dust-proof cover 21, a screw 23 screwed on the dust-proof cover 21, and a connecting band 24 with one end sleeved on the screw 23 and clamped on the dust-proof cover 21 by the screw 23. The dust-proof cover 21 is used to block the first connection head 1113. The gasket 22 forms a sealed environment to prevent water when the dust-proof cover 21 is installed on the first connection head 1113 to block the notch of the first slot. The screw 23 is used to fix the connecting band 24 on the dust-proof cover 21 so that the dust-proof cover 21 will not fall off.

[0035] In the content defined by this embodiment, the dust cover 21 is defined as the dust-proof end 2a of the dust-proof portion 2, and is detachably mounted or dismounted on the first connector 1113, so that it can be removed when the first connector 1113 is in use to facilitate the cooperation between the first connector 1113 and the socket connector. When the first connector 1113 is not cooperating with the socket connector, the dust cover 21 is mounted on the first connector 1113 to block the first slot. Preferably, the dust cover 21 is screwed to the first connector 1113. Correspondingly, an external thread is provided on the outer wall of the first connector 1113, and the dust cover 21 has a cylindrical structure with a hollow interior that penetrates backward. An internal thread is provided on the inner side wall of the dust cover 21, so as to ensure the connection firmness between the dust cover 21 and the first connector 1113 while achieving a certain degree of sealing. A first rubber strip may also be provided in a circular shape or in a circular array at intervals on the inner side wall of the dust cover 21 for one week, and a second rubber strip is provided on the outer wall of the first connector 1113 that is misaligned with the first rubber strip, and the connection and sealing are achieved through the friction between the first rubber strip and the second rubber strip. A second cavity 211 is recessed on the front end face of the dust cover 21 facing away from the first connector 1113. A connecting column 212 protrudes forward along the axial direction at the center of the second cavity 211. A threaded hole is formed by opening one side of the connecting column 212 facing away from the rubber sleeve 112, and the screw 23 is screwed into the threaded hole.

[0036] In the content defined by this embodiment, the gasket 22 is made of a flexible elastic material such as silica gel, and its diameter is larger than the diameter of the first slot and smaller than the inner cavity diameter of the dust cover 21. After the dust cover 21 is screwed onto the first connector 1113, the dust cover 21 presses the gasket 22 against the first connector 1113 to block the first slot and seal the first slot.

[0037] In the content defined in this embodiment, the connecting belt 24 is made of a flexible material such as polyethylene and is strip-shaped. A first sleeve hole 241 for the screw 23 to pass through movably is formed at one end of the connecting belt 24. The diameter of the first sleeve hole 241 is larger than the diameter of the screw 23 and smaller than the diameter of the head of the screw 23. The connecting belt 24 is sleeved on the screw 23 through the first sleeve hole 241. After the screw 23 is screwed on the connecting column 212, the head of the screw 23 clamps the connecting belt 24 between the connecting column 212 and the head, completing the fixation between the connecting belt 24 and the dust cover 21. A ferrule 242 with a width or diameter larger than the width of the connecting belt 24 is formed at the other end of the connecting belt 24. The ferrule 242 can be circular. A second sleeve hole 243 for the first input wire 13 to pass through movably is formed in the ferrule 242. After the ferrule 242 is sleeved on the first input wire 13 through the second sleeve hole 243 in advance, the dust cover 21 will not fall off directly and be prevented from being lost. In this embodiment, the ferrule 242 is defined as the limiting end 2b of the dust-proof part 2. When the ferrule 242 is sleeved on the first input wire 13 and the dust cover 21 covers the first connector 1113, it is used to relatively tighten the dust cover 21.

[0038] As Figure 4 and Figure 5 As shown, the socket connector of the present utility model includes a socket body 3 and a connecting sleeve 4 rotatably connected to the socket body 3. The socket body 3 is used for plugging and unplugging connection with a plug connector to achieve conduction, and the connecting sleeve 4 is used for detachably connecting with the plug body 1 to achieve the connection between the plug body 1 and the socket body 3.

[0039] In the content defined in this embodiment, the socket body 3 has a second plugging end 3a for plugging and mating with the plug body 1. The socket body 3 realizes on-off through plugging and unplugging with the plug connector through the second plugging end 3a. The socket body 3 includes a second rubber sleeve 31, a second terminal 32 arranged in the second rubber sleeve 31, and a second input wire 33 connected to the rear end of the second rubber sleeve 31 and electrically connected to the second terminal 32. The second rubber sleeve 31 is used for protecting and positioning the second terminal 32, and the second terminal 32 cooperates with the second input wire 33 to transmit electrical signals. In this embodiment, the second rubber sleeve 31 also includes a plug joint and a rubber-coated sleeve 312 injection-molded and connected to the rear end of the plug joint. One end of the second terminal 32 is connected to the plug joint and the other end is located in the rubber-coated sleeve 312 after injection molding. The end of the second input wire 33 is also located in the rubber-coated sleeve 312 through the injection molding of the rubber-coated sleeve 312 after being electrically connected to the second terminal 32, so that while the rubber-coated sleeve 312 protects the second terminal 32, the connection firmness between the second terminal 32, the second input wire 33, and the plug joint is ensured.

[0040] In the present utility model, the plug connector of the socket connector is defined as the second plug connector 311. The second plug connector 311 includes a second intermediate section 3111 in a cylindrical shape, a second connecting section 3112 extending from the front end of the second intermediate section 3111 towards the rear end along a plugging direction, and a second connecting head 3113 extending from the front end of the second intermediate section 3111 towards the front end along the plugging direction. The second connecting section 3112 can be cylindrical or in other suitable shapes. On the outer wall of the second connecting section 3112, there is provided a threaded third tight flange 3114 to increase the connection tightness with the second connecting section 3112 after the encapsulation sleeve 312 is injection-molded. To facilitate holding the second plug connector 311, the second connecting section 3112, the second intermediate section 3111, and the second connecting head 3113 are coaxially arranged. To further increase the connection firmness between the encapsulation sleeve 312 and the second connecting section 3112, a third cavity 3115 is recessed on the rear end face of the second connecting section 3112, so that the liquid plastic flows into the third cavity 3115 during the injection molding of the encapsulation sleeve 312 and enters the third cavity 3115 after solidification. On the front end face of the second connecting head 3113, a cylindrical third connecting head is convexly extended along the plugging direction. The third connecting head is defined as the second plug end 3a. At a position corresponding to the partition plate on the second plug end 3a, there is provided an anti-fooling groove 3116 for the first partition plate 1116 to penetrate into. The anti-fooling groove 3116 is in the same shape as the first partition plate 1116 and is in a radial shape, and the anti-fooling groove 3116 penetrates the second plug end 3a outwards in the radial direction and forwards in the axial direction to divide the second plug end 3a into three independent parts. The three independent parts are respectively used to penetrate into the three first slots 1115 to prevent the first plug end 1a and the second plug end 3a from rotating after being inserted and connected. At a position corresponding to each first mating end 122 on the second plug end 3a, there is provided a second slot 3119 for the first mating end 122 to pass through, so as to ensure that the first terminal 12 enters the second slot 3119 and mates with the second terminal 32.

[0041] The second slot 3119 communicates with the mating cavity along the plugging direction. The second input wire 33 correspondingly has three wire cores inside the first input wire 13. Correspondingly, the number of the second terminals 32 and the second slots 3119 are both configured to be three or more and are spaced apart corresponding to the first slots 1115. To avoid interference between the wire cores of the second input wire 33 on the third cavity 3115, a third partition plate 3117 identical to the second partition plate is provided in the third cavity 3115. The encapsulation sleeve 312 is injection-molded through a mold. After the assembly between each second terminal 32, the wire core, and the second plug connector 311 is completed, the mold is sleeved outside the wire core, the second terminal 32, and the second connecting section 3112, and the liquid plastic is injected to cool and solidify to form the encapsulation sleeve 312.

[0042] In this embodiment, the second terminal 32 is also made of a conductive metal material and has a second connection end 321 and a second mating end 322. The second connection end 321 is used to connect with the wire core of the conductive element, and the second mating end 322 is used to cooperate with the plug connector to achieve on-off. Among the contents defined in this embodiment, the second terminal 32 has a cylindrical structure, and at the end of the second connection end 321 of the second terminal 32, there is a second wide-mouth section 323 with a diameter larger than that of the second connection end 321 for the wire core to pass through. On the second mating end 322, there is a mating cavity that penetrates through the front end along the insertion direction and into which the first mating end 122 is inserted. The second slot 3119 penetrates towards the rear end along the insertion direction, and the second mating end 322 is inserted into the second slot 3119. At the front end of the second slot 3119, there is a constriction that blocks the second mating end 322, and the diameter of the constriction is the same as that of the mating cavity, so that the first mating end 122 can pass through the constriction and penetrate into the mating cavity after being inserted into the second insertion end 3a, realizing the conduction between the first terminal 12 and the second terminal 32. Preferably, in order to facilitate a more firm connection between the encapsulation sleeves 112 and 311 and the second terminal 32 after injection molding, an annular second tight flange 324 is also circumferentially protruded on the outer wall of the second connection end 321 to increase the connection tightness between the encapsulation sleeve 312 and the second terminal 32.

[0043] In this embodiment, the connecting sleeve 4 has a cylindrical structure and is provided with a through hole along the insertion direction. At the opening at the rear end of the connecting sleeve 4, there is an inwardly protruding circular inner opening, and the inner diameter of the inner opening is larger than the diameter of the second intermediate section 3111. In order to limit the connecting sleeve 4, an outer edge portion 3118 is annularly protruded on the outer wall of the front end of the second intermediate section 3111 for one week. The outer diameter of the outer edge portion 3118 is larger than the inner diameter of the inner opening and smaller than the inner diameter of the connecting sleeve 4. The connecting sleeve 4 is sleeved on the second intermediate section 3111 and extends forward at the front end, and a sealing ring 5 is provided between the inner opening and the outer edge portion 3118 for waterproof sealing. In this embodiment, there is an installation space for the first connector 1113 to pass through between the inner wall of the connecting sleeve 4 and the second insertion end 3a, and the connecting sleeve 4 can rotate relative to the second insertion cavity. An internal thread for threaded connection with the first connector 1113 is provided on the inner side wall of the connecting sleeve 4. When the first insertion end 1a and the second insertion end 3a are inserted into each other, during the process of the first connector 1113 penetrating into the installation space, by rotating the connecting sleeve 4 until the connecting sleeve 4 is screwed onto the first connector 1113, at this time, the first insertion end 1a and the second insertion end 3a are inserted into each other, and the connecting sleeve 4 ensures the firmness between the plug connector and the socket connector.

[0044] It should be noted that in the present utility model, the front ends corresponding to the plug connectors all refer to the ends close to the socket connector along the axial direction, and the rear ends corresponding to the plug connectors all refer to the ends facing away from the socket connector along the axial direction; the front ends corresponding to the socket connectors all refer to the ends close to the plug connector along the axial direction, and the rear ends corresponding to the socket connectors all refer to the ends facing away from the plug connector along the axial direction.

[0045] The working mode of one embodiment of the plug connector, socket connector and cable connector of the present utility model is as follows: When the plug connector is not in use, the dust cover 21 is screwed on the first plug end 1a. When it is necessary to mate the plug connector with the socket connector, the dust cover 21 is removed. After aligning the first plug end 1a with the second plug end 3a, the second plug end 3a is aligned with the first slot and then moved towards each other along the plugging direction until the first mating end 122 passes through the second slot 3119 and penetrates into the mating slot to be inserted and mated with the second mating end 322. Subsequently, the connecting sleeve 4 is rotated until the connecting sleeve 4 abuts against the outer edge portion 3118, so as to complete the installation between the plug connector and the socket connector.

Claims

1. A plug connector, characterized in that: It includes a plug body and a dust-proof part. The plug body has a first plug end for plugging and mating with a socket connector. The dust-proof part has a dust-proof end detachably covering the first plug end and a limiting end movably sleeved on the first plug end. The limiting end is used to limit the dust-proof end on the plug body.

2. The plug connector according to claim 1, characterized in that: The plug body includes a first rubber sleeve and a first terminal disposed in the first rubber sleeve. The first terminal has a first connection end and a first mating end. A first input wire electrically connected to the first connection end is connected to the rear end of the first rubber sleeve. The first mating end of the first terminal extends out of the front end of the first rubber sleeve along a plugging direction.

3. The plug connector according to claim 2, characterized in that: The first terminals are configured to be multiple and are spaced apart from each other. The first plug end includes a first connection head extending along the plugging direction from the front end face of the first rubber sleeve and a first slot recessed from the front end of the first connection head. A first partition is formed in the first slot corresponding to the first terminal to divide the first slot into multiple first sub-slots corresponding to the first terminals in the radial direction. The first mating ends of the first terminals respectively extend from the first rubber sleeve into the first sub-slots along the plugging direction.

4. The plug connector according to claim 3, characterized in that: The dust-proof part includes a dust-proof cover detachably covering the first connection head for shielding the first slot. The dust-proof cover is defined as the dust-proof end.

5. The plug connector according to claim 4, characterized in that: The dust-proof cover is screwed onto the first connection head. The dust-proof part further includes a gasket that seals the notch of the first slot when the dust-proof cover is screwed onto the first connection head.

6. The plug connector according to claim 4 or 5, characterized in that: A connection post is formed on the end face of the dust-proof cover facing away from the first connection head. The dust-proof part further includes a screw screwed onto the connection post and a connection band with one end sleeved on the screw and clamped on the connection post by the screw. The connection band is made of a flexible material and the other end has a loop sleeved on the first input wire. The loop is defined as the limiting end.

7. A socket connector, characterized in that: It includes a socket body and a connection sleeve rotatably connected to the socket body. The socket body has a second plug end for plugging and mating with the plug body according to any one of claims 1 to 6. The connection sleeve is used for detachably connecting with the plug body.

8. The socket connector according to claim 7, characterized in that: The socket body includes a second rubber sleeve and a second terminal disposed in the second rubber sleeve. A second input wire is connected to the rear end of the second rubber sleeve. The second terminal has a second connection end for electrically connecting with the second input wire and a second mating end. A mating cavity is formed in the second mating end and penetrates along the plugging direction for the first mating end to be plugged therein. The second plug end for penetrating into the first slot according to claim 3 is formed on the front end face of the second rubber sleeve along the plugging direction. An anti-fooling slot for the partition to penetrate into is formed at the position corresponding to the first partition on the second plug end. And second slots for the first mating ends to pass through are formed at the positions corresponding to the first mating ends on the second plug end. The second slots communicate with the mating cavity along the plugging direction.

9. A cable connector, characterized in that: It includes a plug connector according to any one of claims 2 to 6 and a socket connector according to claim 8.

10. The cable connector according to claim 9, characterized in that: Both the first rubber sleeve and the second rubber sleeve include a plug joint and a rubber-coated sleeve injection-molded and connected to the rear end of the plug joint. A first tight flange is formed on the outer wall of the rear end of the plug joint. The first connection end and the second connection end are inserted through the rubber-coated sleeve, and the first mating end and the second mating end are inserted through the plug joint. Second tight flanges are formed on the outer walls of the first connection end and the second connection end.

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