A protective electrical connector and method of use

Abstract

The application belongs to the technical field of electric connectors, and discloses a protective electric connector and a use method, wherein the protective electric connector comprises a connector protective shell, a plug connector is fixed at the center of the end of the connector protective shell, and an outer sleeve is fixed at the edge of the end of the connector protective shell. Through cooperation of the structures such as the cover single leaf, the sliding sleeve and the arc-shaped opening groove, when the plug connector is pulled out, the rotating ring block is reversely reset and rotated, the half gear is driven by the positioning shaft to move along the circumferential track in the groove, and the cover single leaf is synchronously driven to rotate, so that multiple cover single leaves are simultaneously and automatically rotated and closed, abut against each other, spliced into an integral circular cover plate, and covered outside the plug connector and the outer sleeve. Therefore, the plug connector is always not in contact with the outside during the plugging process, is in a relatively closed space, the corrosion of external dust and water vapor on the connecting elements in the plug connector is effectively reduced, and the service life of the plug connector is prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electrical connectors, and particularly relates to a protective electrical connector and a use method. BACKGROUND

[0002] An electrical connector is an electronic component for transmitting current or signals between electronic system devices, which serves as a node to transmit current or optical signals between devices, components, equipment and electronic systems independently or together with cables, and keeps the signal distortion and energy loss between systems from changing, and the protective electrical connector increases the protection function on the basis of the ordinary electrical connector, and generally improves the dustproof and waterproof performance.

[0003] The prior art document application No. CN105206969A discloses a new ground power electrical connector, which comprises a plug and a socket, the plug is connected with the socket, the plug is composed of a plug insulator, a protective sleeve assembly, a socket assembly and a connecting piece, the socket assembly is located in the plug insulator, the plug insulator and the protective sleeve assembly are fixed through the connecting piece, the new ground power electrical connector is applied to the power supply system of an airplane, and is used for connecting a large-current ground power electrical connector between the power supply system on the airplane and a ground power supply vehicle, the new ground power electrical connector is a straight insertion type, the contact body adopts a crown spring type connection, and is locked through a flat mouth buckle after being connected, and has the characteristics of convenient operation, soft plugging force, reliable contact, stable performance, quick separation and insertion, etc., although the plugging mode of the electrical connector is improved, but the internal joint of the electrical connector is still exposed to the air after being pulled out of the socket, and if the joint is not continuously used, the internal elements of the joint are easily corroded by the dust and water vapor in the air, and the next power connection effect is reduced. SUMMARY

[0004] In order to solve the problem that the internal joint of the electrical connector is still exposed to the air after being pulled out of the socket, and the internal elements are corroded, the present application provides a protective electrical connector and a use method.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a protective electrical connector, which comprises a joint protective shell, a plug joint is fixed at the center of the end of the joint protective shell, an outer sleeve is fixed at the edge of the end of the joint protective shell, an inner sleeve is movably sleeved between the outer sleeve and the plug joint, an installation plate is fixed at the end of the inner sleeve, and the protective electrical connector further comprises an automatic opening and closing mechanism and a clamping limiting mechanism, the automatic opening and closing mechanism is located on the outer sleeve, and the clamping limiting mechanism is located on the inner sleeve.

[0006] The automatic opening and closing mechanism and the clamping limiting mechanism are connected, and the automatic opening and closing mechanism can be automatically opened and closed during plugging to protect the plug connector, and the opening state of the automatic opening and closing mechanism is maintained stable through the clamping limiting mechanism.

[0007] Preferably, the automatic opening and closing mechanism comprises a fixed ring block fixed to the end of the outer sleeve, a plurality of grooves are equidistantly arranged on the fixed ring block, and a gear rack is fixed in the grooves.

[0008] Preferably, the outer wall of the gear rack is engaged with a half gear, a positioning shaft is rotatably connected at the center of the half gear, and a rotating ring block is fixed to the end of the positioning shaft.

[0009] Preferably, the number of half gears is the same as that of grooves, and the side walls of the half gears are fixed with cover single leaves, a plurality of cover single leaves are petal-shaped and fit together to form a circular cover plate.

[0010] Preferably, the outer wall of the outer sleeve and the outer wall of the outer sleeve are slidingly connected with a sliding sleeve, the sliding sleeve is slidingly clamped with a sliding groove block through a pair of sliding arc plates, and the inner side of the sliding groove block is fixed to the connector protection shell.

[0011] Preferably, a pair of arc-shaped grooves are symmetrically arranged on both sides of the inner cavity of the sliding sleeve, a protrusion is slidingly connected in the arc-shaped grooves, a pair of protrusions are commonly fixed with a clamping plate, the clamping plate is slidingly connected to the outer wall of the outer sleeve, and the clamping plate is movably sleeved to the outer wall of the rotating ring block.

[0012] Preferably, the clamping limiting mechanism comprises a bottom plate commonly fixed to the mounting plate and the inner sleeve, a clamping block is symmetrically slidingly connected to the two sides of the inner sleeve, a hook pressing plate is fixed to the side wall of the clamping block, the clamping block and the hook pressing plate are commonly elastically connected to the inner sleeve, and the outer wall of the hook pressing plate further slidingly penetrates the bottom plate.

[0013] Preferably, the outer wall of the bottom plate is rotatably connected with a protection cover through a rubber ring, a pair of hook pressing plates are located in the inner cavity of the protection cover, a pair of unlocking grooves are symmetrically arranged on both sides of the protection cover, a pair of arc-shaped opening grooves are symmetrically arranged on the inner side of the rotating ring block, a pair of straight grooves are arranged on both sides of the outer sleeve and communicated with the arc-shaped opening grooves, and a pair of sliding columns are fixed to the two sides of the end of the inner sleeve and slidingly clamped in the arc-shaped opening grooves and the straight grooves.

[0014] Preferably, the outer wall of the clamping block is clamped to the rotating ring block through a bevel stopper, the end of the rotating ring block abuts against a first sealing ring, the first sealing ring is fixed to the bottom plate, the end of the inner sleeve abuts against a second sealing rubber ring, and the second sealing rubber ring is fixed to the outer sleeve.

[0015] The application also provides a use method of the protective electric connector.

[0016] S1, during the insertion operation of the electric connector, the mounting plate and the inner sleeve are mounted outside the socket, the positioning key of the plug-in connector is aligned with the key groove of the corresponding socket, the axial line is ensured to be coincident, the connector protection shell is pushed, the inner sleeve makes the automatic opening and closing mechanism automatically open under the mechanical linkage, and the plug-in connector is exposed;

[0017] S2, the protection shell is continuously pushed until the plug-in connector is completely inserted into the socket, at this time, the clamping limiting mechanism triggers the mechanical locking, simultaneously extrudes the corresponding sealing structure, and makes the automatic opening and closing mechanism stably maintain the open state;

[0018] S3, during the pulling-out operation of the electric connector, the clamping limiting mechanism part is pressed to release the mechanical locking with the automatic opening and closing mechanism;

[0019] S4, after the locking is released, the automatic opening and closing mechanism is automatically closed under the mechanical linkage, covers and protects the plug-in connector, at this time, the connector can be smoothly pulled out, and the clamping limiting mechanism is automatically elastically reset synchronously.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] (1) the application is provided with the cooperation of the cover plate single leaf, the sliding sleeve and the arc-shaped opening groove, and when the plug-in connector is pulled out, the cover plate single leaf is automatically closed, the dustproof and corrosion-proof effects are achieved, when the plug-in connector is pulled out, the sliding column reversely slides in the straight groove and then enters the arc-shaped opening groove of the rotating ring block again, the rotating ring block is reversely reset and rotates, the half gear can be synchronously driven to move along the circumferential track in the groove through the positioning shaft, and the half gear can also synchronously drive the fixed cover plate single leaf to rotate through the meshing effect of the rack, so that the cover plate single leaf is automatically closed, abuts against each other, is spliced into an integral circular cover plate, covers the outside of the plug-in connector and the outer sleeve, the plug-in connector is always not in contact with the outside during the plugging and unplugging process, is in a relatively closed space, the corrosion of external dust and water vapor on the connecting elements in the plug-in connector is effectively reduced, and the service life of the plug-in connector is prolonged.

[0022] (2) the application is provided with the cooperation of the sliding arc plate and the clamping plate, and the cover plate single leaf is limited after the plug-in connector is pulled out, so that the cover plate single leaf is prevented from rotating and opening, when the plug-in connector is pulled out, the sliding sleeve moves axially towards the direction of the sliding groove block through the sliding arc plate, therefore, the convex block can slide along the track of the arc-shaped groove again, the clamping plate is rotated and pushed out of the range of the sliding sleeve, the clamping plate is sleeved on the outer wall of the rotating ring block, the closed cover plate single leaf is limited and locked outside, and the external dust is prevented from entering the plug-in connector.

[0023] (3) The present invention facilitates the locking of the cover leaf in the open state by providing the coordination of the structures such as the clamping block and the rotating ring block. After the plug connector is inserted into the socket, the cover leaf is in the open state. The sliding sleeve is continuously pushed until the rotating ring block is squeezed and fitted with the first sealing ring. The clamping block is clamped with the rotating ring block to form a mechanical lock. At this time, the end of the inner sleeve is also tightly fitted with the second sealing rubber ring to enhance the waterproof effect. After the cover leaf is rotated and opened, the rotating ring block and the clamping block are locked with each other, which can ensure that the cover leaf is in a stable open state at this time, and avoid the cover leaf from moving freely in a small range under the mechanical vibration of the equipment operation, resulting in continuous wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the top cross-sectional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the structural coordination relationship between the rotating ring block and the single cover leaf of the present invention;

[0027] Figure 4 This is a schematic diagram of the structural matching relationship between the single leaf of the cover plate and the half gear of the present invention;

[0028] Figure 5 This is a schematic diagram of the structural matching relationship between the half gear and the positioning shaft of the present invention;

[0029] Figure 6 It is a schematic diagram of the side sectional structure of the present invention;

[0030] Figure 7 For the present invention Figure 6 A schematic diagram of the structure enlarged in the middle;

[0031] Figure 8 This is a structural diagram of a single leaf of the cover plate in a closed state according to the present invention;

[0032] Figure 9 A schematic diagram of the structural coordination relationship between the protective cover and the base plate of the present invention;

[0033] Figure 10 This is a schematic diagram of the structural coordination relationship between the protective cover and the rubber ring of the present invention;

[0034] Figure 11 This is a schematic diagram of the structural coordination relationship between the sliding sleeve and the clamping plate of the present invention;

[0035] Figure 12 For the present invention Figure 11 The enlarged structural diagram at B in the middle;

[0036] Figure 13 It is a schematic diagram of the structural matching relationship between the clamping plate and the protrusion of the present invention.

[0037] In the drawings:

[0038] 1, joint protection shell; 2, mounting plate; 3, automatic opening and closing mechanism; 301, rotating ring block; 302, cover single leaf; 303, fixed ring block; 304, clamping plate; 305, sliding sleeve; 306, sliding groove block; 307, positioning shaft; 308, half gear; 309, groove; 3010, rack; 3011, sliding arc plate; 3012, arc-shaped groove; 3013, protrusion; 4, clamping limiting mechanism; 401, bottom plate; 402, first sealing ring; 403, second sealing rubber ring; 404, sliding column; 405, straight groove; 406, protective cover; 407, arc-shaped opening groove; 408, bevel stop block; 409, bent hook pressing plate; 4010, clamping block; 4011, rubber ring; 5, plug; 6, outer sleeve; 7, inner sleeve. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0040] As shown in the drawings, Figures 1 to 13 the present application provides a protective electrical connector, which comprises a joint protection shell 1, a plug 5 is fixedly connected at the center of the end of the joint protection shell 1, an outer sleeve 6 is fixedly connected at the edge of the end of the joint protection shell 1, an inner sleeve 7 is movably sleeved between the outer sleeve 6 and the plug 5, a mounting plate 2 is fixedly connected at the end of the inner sleeve 7, further comprising: an automatic opening and closing mechanism 3 located on the outer sleeve 6; and a clamping limiting mechanism 4 located on the inner sleeve 7.

[0041] The automatic opening and closing mechanism 3 is connected with the clamping limiting mechanism 4, and the automatic opening and closing mechanism 3 can automatically open and close to protect the plug 5 during plugging and unplugging, and the opening state of the automatic opening and closing mechanism 3 is maintained stable by the clamping limiting mechanism 4.

[0042] By adopting the above scheme: when the electrical connector is unplugged, the automatic opening and closing mechanism 3 automatically closes under mechanical linkage, covering and protecting the plug 5, at this time the connector can be smoothly unplugged, the clamping limiting mechanism 4 is automatically and elastically reset synchronously, and the plug 5 is always not in contact with the outside during plugging and unplugging, being in a relatively closed space, which effectively reduces the corrosion of the connecting elements in the plug 5 by external dust and water vapor.

[0043] As shown in the drawings, Figure 4 , Figure 5 and Figure 8As shown, the automatic opening and closing mechanism 3 comprises a fixed ring block 303 fixed to the end of the outer sleeve 6, a plurality of grooves 309 are equidistantly arranged on the fixed ring block 303, and a rack 3010 is fixed in the groove 309; the outer wall of the rack 3010 is engaged with a half gear 308, the center of the half gear 308 is rotatably connected with a positioning shaft 307, the end of the positioning shaft 307 is fixed with a rotating ring block 301; the number of half gears 308 is the same as that of the grooves 309, and the side wall of the half gear 308 is fixed with a cover single leaf 302, a plurality of cover single leaves 302 are petal-shaped and fit together to form a circular cover plate.

[0044] As shown in Figures 11 to 13 , the joint protective shell 1 and the outer wall of the outer sleeve 6 are slidingly connected with a sliding sleeve 305, the sliding sleeve 305 is slidingly connected with a sliding groove block 306 through a pair of sliding arc plates 3011, and the inner side of the sliding groove block 306 is fixed to the joint protective shell 1; a pair of arc-shaped grooves 3012 are symmetrically arranged on both sides of the inner cavity of the sliding sleeve 305, and a convex block 3013 is slidingly connected in the arc-shaped groove 3012; a pair of convex blocks 3013 are commonly fixed with a clamping plate 304, the clamping plate 304 is slidingly connected to the outer wall of the outer sleeve 6, and the clamping plate 304 is movably sleeved to the outer wall of the rotating ring block 301.

[0045] The above scheme is adopted: when the plug-in, the rotating ring block 301 rotates, through the positioning shaft 307 fixed to the side wall of the rotating ring block 301, the half gear 308 can be driven to move along the circumferential track in the groove 309, and during the movement of the half gear 308, because it is always engaged with the rack 3010, the half gear 308 can also synchronously drive the fixed cover single leaf 302 to rotate, a plurality of cover single leaves 302 are automatically rotated at the same time, the plug-in 5 is exposed in the inner sleeve 7, and dust is prevented from entering.

[0046] As shown in Figure 6 and Figure 7 , the clamping and limiting mechanism 4 comprises a bottom plate 401 commonly fixed to the mounting plate 2 and the inner sleeve 7, a clamping block 4010 is symmetrically slidingly connected to the two sides of the inner sleeve 7, the side wall of the clamping block 4010 is fixed with a bent hook pressing plate 409, the clamping block 4010 and the bent hook pressing plate 409 are commonly elastically connected to the inner sleeve 7, and the outer wall of the bent hook pressing plate 409 is slidingly penetrated into the bottom plate 401.

[0047] As shown in Figure 2 , Figure 9 and Figure 10As shown, the outer wall of the bottom plate 401 is rotationally connected with the protective cover 406 through the rubber ring 4011, the pair of hook pressing plates 409 are located in the inner cavity of the protective cover 406, the two sides of the protective cover 406 are symmetrically provided with unlocking grooves, the inner side of the rotary ring block 301 is provided with a pair of arc-shaped opening grooves 407 in a central symmetric manner, the two sides of the outer sleeve 6 are provided with a pair of straight grooves 405 in communication with the arc-shaped opening grooves 407, the two sides of the end portion of the inner sleeve 7 are fixedly connected with a pair of sliding columns 404, and the sliding columns 404 are slidably connected in the arc-shaped opening grooves 407 and the straight grooves 405; the outer wall of the clamping block 4010 is clamped on the rotary ring block 301 through the bevel stop block 408, the end portion of the rotary ring block 301 abuts against the first sealing ring 402, and the first sealing ring 402 is fixedly connected to the bottom plate 401, and the end portion of the inner sleeve 7 abuts against the second sealing rubber ring 403, and the second sealing rubber ring 403 is fixedly connected to the outer sleeve 6.

[0048] By adopting the above scheme, when the electric connector is pulled out, the sliding column 404 reversely slides from the straight groove 405 into the arc-shaped opening groove 407 of the rotary ring block 301 again, so that the rotary ring block 301 is reversely reset and rotated, and finally a plurality of cover plate single leaves 302 are reversely reset and rotated synchronously, abut against each other, and are spliced into an integral circular cover plate, which covers the outside of the plug connector 5 and the outer sleeve 6, so that the plug connector 5 is always not in contact with the outside during the plugging and unplugging process, is in a relatively closed space, and the corrosion of the connecting elements in the plug connector 5 by the dust and water vapor in the outside is effectively reduced.

[0049] The application also provides a use method of the protective electric connector, and the use method is as follows.

[0050] S1, during the plugging operation of the electric connector, the mounting plate 2 and the inner sleeve 7 are mounted outside the socket, then the positioning key of the plug connector 5 is aligned with the key groove of the corresponding socket to ensure that the axial lines coincide, the connector protective shell 1 is pushed, and the inner sleeve 7 automatically opens the automatic opening and closing mechanism 3 under mechanical linkage to expose the plug connector 5;

[0051] S2, the protective shell 1 is continuously pushed until the plug connector 5 is completely plugged into the socket, at this time, the clamping limiting mechanism 4 triggers the mechanical locking, simultaneously extrudes the corresponding sealing structure, and makes the automatic opening and closing mechanism 3 stably maintain the opened state;

[0052] S3, during the unplugging operation of the electric connector, the clamping limiting mechanism 4 part is pressed to release the mechanical locking with the automatic opening and closing mechanism 3;

[0053] S4, after the locking is released, the automatic opening and closing mechanism 3 is automatically closed under the mechanical linkage to cover and protect the plug connector 5, at this time, the connector can be smoothly pulled out, and the clamping limiting mechanism 4 is automatically and elastically reset synchronously.

[0054] The working principle and use process of the application are as follows.

[0055] First, the mounting plate 2 and the inner sleeve 7 are installed outside the socket, and during the plug-in operation of the electrical connector, the positioning key of the plug-in connector 5 is aligned with the key groove of the corresponding socket, the shaft center line is ensured to coincide, the sliding sleeve 305 on the connector protective shell 1 is pushed, the sliding sleeve 305 drives the sliding arc plate 3011 to slide out of the sliding groove block 306, until the inner surface of the sliding sleeve 305 abuts against the end of the outer sleeve 6, at this time, the protrusion 3013 on the clamping plate 304 is extruded in the arc-shaped groove 3012, the clamping plate 304 is driven to rotate and retract into the inside of the sliding sleeve 305, so that the position of the cover single leaf 302 is exposed. And during the plug-in, the sliding column 404 on the inner sleeve 7 first slides into the arc-shaped opening slot 407, and the rotating ring block 301 is driven to rotate along with the plug-in of the plug-in connector 5, until the sliding column 404 slides out of the arc-shaped opening slot 407 and enters the straight slot 405 on the outer sleeve 6. During the rotation of the rotating ring block 301, the positioning shaft 307 fixed to the side wall of the rotating ring block 301 can drive the half gear 308 to move along the circumferential track in the groove 309, and during the movement of the half gear 308, since it is always engaged with the rack 3010, the half gear 308 can also synchronously drive the fixed cover single leaf 302 to rotate, so that the plug-in connector 5 is exposed in the inner sleeve 7, avoiding the entry of external dust into the connection;

[0056] Continue to push the sliding sleeve 305 until the plug-in connector 5 is completely inserted into the socket, at this time, the inclined edge block 408 on the rotating ring block 301 extrudes the clamping block 4010, until the rotating ring block 301 is extruded and fitted with the first sealing ring 402, under the elastic force of the spring, the clamping block 4010 is clamped with the rotating ring block 301, triggering the mechanical locking, and the "click" sound indicates that the connection is in place, at this time, the end of the inner sleeve 7 is also tightly fitted with the second sealing rubber ring 403, ensuring the waterproof sealing performance after connection. And the clamping state of the rotating ring block 301 and the clamping block 4010 remains stable, not only making the clamping of the plug-in connector 5 have the anti-loosening function, but also making the opening state of the cover single leaf 302 remain locked, avoiding the continuous small-amplitude wear of the cover single leaf 302 under the mechanical vibration of the equipment operation, prolonging the service life of the cover single leaf 302;

[0057] When the electrical connector is pulled out, the protective cover 406 is first rotated to expose the hooking plate 409 inside, and then the end of the hooking plate 409 is pressed to lower the clamping block 4010, thereby releasing the mechanical locking of the rotating ring block 301. Then the operator holds the sliding sleeve 305 to pull out the plug 5 from the socket, and during the pulling-out process, the slide column 404 reversely slides from the straight slot 405 into the arc-shaped opening slot 407 of the rotating ring block 301, so that the rotating ring block 301 is reversely reset and rotated. As described above, through the linkage of the positioning shaft 307, the half gear 308 and the rack 3010, the plurality of cover single leaves 302 are reversely reset and rotated synchronously, abut against each other, and are combined into an integral circular cover plate, which covers the outside of the plug 5 and the outer sleeve 6, so that the plug 5 is always not in contact with the outside during the plugging and unplugging process, and is in a relatively closed space, which effectively reduces the corrosion of the connecting elements in the plug 5 by the dust and water vapor in the outside, and improves the connection effect of the plug 5. When the plug 5 is pulled out, the sliding sleeve 305 will move axially towards the direction of the slide groove block 306 through the sliding arc plate 3011, so that the convex block 3013 can slide along the track of the arc-shaped slot 3012 again, and the clamping plate 304 is rotated and pushed out of the range of the sliding sleeve 305, so that the clamping plate 304 is sleeved on the outer wall of the rotating ring block 301 to limit and lock the outside of the closed cover single leaf 302.

[0058] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A protective electrical connector, comprising a connector protective shell (1), a plug connector (5) fixedly connected at the center of the end of the connector protective shell (1), an outer sleeve (6) fixedly connected to the edge of the end of the connector protective shell (1), an inner sleeve (7) movably sleeved between the outer sleeve (6) and the plug connector (5), and a mounting plate (2) fixedly connected to the end of the inner sleeve (7), characterized in that: Also includes: An automatic opening and closing mechanism (3), the automatic opening and closing mechanism (3) being located on the outer sleeve (6); A clamping and limiting mechanism (4), wherein the clamping and limiting mechanism (4) is located on the inner sleeve (7); The automatic opening and closing mechanism (3) and the clamping limit mechanism (4) are connected, and the automatic opening and closing mechanism (3) can automatically open and close when plugging and unplugging to protect the plug connector (5), and the opening state of the automatic opening and closing mechanism (3) is maintained stable by the clamping limit mechanism (4); The automatic opening and closing mechanism (3) comprises a fixed ring block (303) fixed to the end of the outer sleeve (6), a plurality of grooves (309) are formed on the fixed ring block (303) at equal intervals, and a rack (3010) is fixed in the groove (309); A half gear (308) is meshed with the outer wall of the rack (3010), a positioning shaft (307) is rotatably connected to the center of the half gear (308), and a rotating ring block (301) is fixed to the end of the positioning shaft (307); The number of the half gears (308) is the same as that of the grooves (309), and the side walls of the half gears (308) are all fixedly connected with single cover leaves (302), and the multiple single cover leaves (302) are all petal-shaped and fit together to form a circular cover. The clamping limit mechanism (4) comprises a base plate (401) fixedly connected to the mounting plate (2) and the inner sleeve (7); the inner sleeve (7) is symmetrically slidably connected to two sides of the clamping block (4010); the side walls of the clamping block (4010) are fixedly connected to a bent hook pressure plate (409); the clamping block (4010) and the bent hook pressure plate (409) are elastically connected to the inner sleeve (7); and the outer wall of the bent hook pressure plate (409) also slides through the base plate (401).

2. The protective electrical connector according to claim 1, wherein: The outer walls of the joint protective shell (1) and the outer sleeve (6) are slidably connected with a sliding sleeve (305), and the sliding sleeve (305) is slidably engaged with a sliding groove block (306) through a pair of sliding arc plates (3011), and the inner side of the sliding groove block (306) is fixed to the joint protective shell (1).

3. The protective electrical connector according to claim 2, wherein: A pair of arcuate grooves (3012) are symmetrically provided on both sides of the inner cavity of the sliding sleeve (305), and a protrusion (3013) is slidably connected in the arcuate groove (3012). The pair of protrusions (3013) are fixedly connected to a clamping plate (304) in common, and the clamping plate (304) is slidably connected to the outer wall of the outer sleeve (6), and the clamping plate (304) is movably sleeved to the outer wall of the rotating ring block (301).

4. The protective electrical connector according to claim 1, wherein: The outer wall of the bottom plate (401) is rotatably connected to the protective cover (406) through a rubber ring (4011), a pair of the bent hook pressure plates (409) are both located in the inner cavity of the protective cover (406), unlocking grooves are symmetrically provided on both sides of the protective cover (406), a pair of arc-shaped opening grooves (407) are provided on the inner side of the rotating ring block (301) in a centrally symmetrical manner, a pair of straight grooves (405) connected to the arc-shaped opening grooves (407) are provided on both sides of the outer sleeve (6), a pair of sliding columns (404) are fixed on both sides of the end of the inner sleeve (7), and the sliding columns (404) are slidably engaged in the arc-shaped opening grooves (407) and the straight grooves (405).

5. The protective electrical connector according to claim 4, wherein: The outer wall of the clamping block (4010) is clamped to the rotating ring block (301) through the bevel stop block (408); the end of the rotating ring block (301) is abutted against a first sealing ring (402), and the first sealing ring (402) is fixed to the bottom plate (401); the end of the inner sleeve (7) is abutted against a second sealing rubber ring (403), and the second sealing rubber ring (403) is fixed to the outer sleeve (6).

6. A method for using a protective electrical connector, applied to the protective electrical connector according to claim 1, characterized in that: The method of use is as follows: S1. During the operation of inserting the electrical connector, first install the mounting plate (2) and the inner sleeve (7) on the outside of the socket, then align the positioning key of the plug connector (5) with the keyway of the corresponding socket to ensure that the axis lines coincide, push the connector protective shell (1), and the inner sleeve (7) causes the automatic opening and closing mechanism (3) to automatically open under mechanical linkage, exposing the plug connector (5); S2. Continue to push the protective shell (1) until the plug connector (5) is fully inserted into the socket. At this time, the clamping limit mechanism (4) triggers the mechanical lock, squeezes the corresponding sealing structure, and makes the automatic opening and closing mechanism (3) stably maintain the open state; S3. During the operation of removing the electrical connector, the part of the clamping limit mechanism (4) is pressed to release the mechanical lock between the clamping limit mechanism (4) and the automatic opening and closing mechanism (3); S4. After the lock is released, the automatic opening and closing mechanism (3) automatically closes under mechanical linkage, covering and protecting the plug connector (5). At this time, the connector can be smoothly pulled out, and the clamping limit mechanism (4) automatically and elastically resets synchronously.

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