A plug, socket and connector with dust-proof function

Abstract

A plug, socket and connector with a dust-proof function, characterized in that a first dust-proof component is provided at the front end of the plug; the first dust-proof component includes: a dust-proof front cover, the front part of the dust-proof front cover is the face part, and the rear part is the plug-in part; an insertion hole is opened in the middle of the dust-proof front cover; the dust-proof baffle is divided into a left and a right layout, and is respectively pivotally connected to the inner side wall of the plug-in part of the insertion hole of the dust-proof front cover, and each of the left and right dust-proof plates has a connecting push arm, and a push column is arranged on the connecting push arm; a dust-proof rear cover, a rear cover through hole is opened in the middle of the dust-proof rear cover to open and close the dust-proof baffle so as to cover or block the insertion hole; at least one elastic element is supported between the dust-proof front cover and the dust-proof rear cover; the present invention also discloses a corresponding socket and its connector. It adopts double-door and double-spring reset, with higher structural reliability and better dust-proof effect.

Description

Technical Field

[0001] The present invention relates to the field of connectors, and particularly to a plug, a socket and a connector with a dust-proof function. Background Art

[0002] An optical fiber sensor is a sensor that converts the state of a measured object into a measurable optical signal. The working principle of the optical fiber sensor is to send the light beam incident from the light source into the modulator via the optical fiber. Inside the modulator, the light beam interacts with the external measured parameter, causing changes in the optical properties of the light, such as the intensity, wavelength, frequency, phase, polarization state, etc. of the light, becoming a modulated optical signal. Then, the modulated optical signal is sent into the optoelectronic device via the optical fiber and the measured parameter is obtained after passing through the demodulator. During the whole process, the light beam is introduced via the optical fiber and then emitted after passing through the modulator. The role of the optical fiber is firstly to transmit the light beam, and secondly to act as an optical modulator. However, dust can easily have various impacts on the optical fiber connector. Dust particles will adhere to the surface or inside of the optical fiber connector, resulting in incomplete alignment of the fiber cores when the optical fibers are connected, thereby affecting the quality of the optical signal and causing signal attenuation. Dust pollution will reduce the transmission performance of the optical fiber, possibly leading to a reduction in the maximum transmission distance. Dust accumulation inside the device will affect the ventilation and heat dissipation of the device, causing the temperature to rise, and even causing corrosion of the internal circuit boards of the device and poor contact of the signal connectors, thereby triggering device failures.

[0003] Most of the current optical fiber connectors on the market are models without automatic protection for the optical fiber connectors, or require manual covering of the protective cover to manually protect the inside of the connector to achieve the dust-proof effect. However, the manual dust-proof cover is extremely easy to forget or has a large delay. For an optical fiber connector, which is a precision connector that requires extremely dust-free conditions, there is still much room for improvement in its structure, and the adapted socket also needs to be equipped with an active dust-proof device. Summary of the Invention

[0004] The primary technical problem to be solved by the present invention is to provide a plug with a dust-proof function. The plug is provided with a first dust-proof component, which will automatically open only when the user needs to use the plug to insert it into the socket, facilitating the connection of the plug. When the user pulls the plug out of the socket, the first dust-proof component will automatically close, actively protecting the plug from being contaminated.

[0005] Another technical problem to be solved by the present invention is to provide a socket with a dust-proof function. The socket is provided with a second dust-proof component. When the adapted plug is inserted, the second dust-proof component opens. When the plug is pulled out, the second dust-proof component automatically closes the inserted opening of the socket, and the second dust-proof component is implemented by using a lever-like operating member, with a simple interface and higher reliability.

[0006] Another technical problem to be solved by the present invention is to provide a related connector with a dust-proof function.

[0007] The technical solution for the present invention to solve the primary technical problem is: A plug with a dust-proof function, which can be plugged and connected with a mating socket in at least one plugging direction to achieve optical or / and electrical conduction, includes a plug housing. A fiber optic ferrule or / and a cable ferrule is arranged in the plug housing. It is characterized in that a first dust-proof component is provided at the front end of the plug; the first dust-proof component includes:

[0008] A dust-proof front cover, the front part of the dust-proof front cover is the face part, and the rear part is the plugging part; an insertion hole is opened in the middle of the dust-proof front cover;

[0009] A dust-proof baffle, which is divided into a left dust-proof plate and a right dust-proof plate arranged in a left-right layout, and are respectively pivotally connected to the inner side wall of the plugging part of the insertion hole of the dust-proof front cover. The left dust-proof plate and the right dust-proof plate each have a connecting push arm, and a pushing column is arranged on the connecting push arm;

[0010] A dust-proof rear cover, a rear cover through hole is opened in the middle of the dust-proof rear cover, and furthermore, the dust-proof rear cover has a pushing part facing forward. The pushing part is provided with a guiding hole, which is movably plugged and connected with the pushing column on the connecting push arm; so as to open and close the dust-proof baffle to cover or block the insertion hole;

[0011] At least one elastic element, which is supported between the dust-proof front cover and the dust-proof rear cover to realize the backward movement and forward reset of the dust-proof front cover.

[0012] In order to improve the stability and reliability, a further improvement is: A guiding and matching mechanism is provided between the dust-proof front cover and the dust-proof rear cover.

[0013] In order to simplify the structure, a further improvement is: The guiding and matching mechanism is:

[0014] A guiding groove, which is arranged on the plugging part of the dust-proof front cover, and a pin shaft hole for the pin shaft on the connecting push arm to move is opened in the guiding groove;

[0015] A guiding block, the pushing part of the dust-proof rear cover also serves as the guiding block, and can slide back and forth relatively when placed in the guiding groove.

[0016] A further improvement is: The elastic element is a spring supported between the bottom of the guiding groove and the top of the pushing part.

[0017] A further improvement is: The left dust-proof plate and the right dust-proof plate are arranged symmetrically left and right. Correspondingly, the guiding and matching mechanism and the spring are also arranged symmetrically up and down.

[0018] A further improvement is: The left dust-proof plate and the right dust-proof plate are both U-shaped, the front is the baffle part, and the upper and lower sides are the connecting push arms. The connecting push arms are provided with a pushing column and a pin shaft, which are respectively matched with the guiding hole on the dust-proof rear cover and the pin shaft hole on the dust-proof front cover to realize rotational opening or closing.

[0019] In order to protect and limit the left dust shield and the right dust shield, further improvements are made: the top of the dustproof rear cover has a limiting portion with a guide edge, when the left dust shield and the right dust shield are rotated to complete the opening, the left dust shield and the right dust shield conflict with the limiting portion on the top of the dustproof rear cover to realize the limiting function.

[0020] Further improvement: the first dustproof component is sleeved on the optical fiber ferrule and / or the cable ferrule, and is fixed to the inner wall fixing groove of the plug housing through the fixing block on the dustproof rear cover.

[0021] The technical solution of the present invention to solve another technical problem is: a socket with dustproof function, which can generate optical and / or electrical conduction with a mating plug in at least one plugging direction, comprises a socket shell, a socket core is fixed in the socket shell, and the socket shell and the socket core are respectively provided with insertion openings in the insertion direction, wherein a second dustproof component is provided at the front end of the socket; it is characterized in that the second dustproof component comprises:

[0022] A slot, with a gap between the socket shell and the socket core body to match the plug shell;

[0023] A dustproof rotating sheet is rotatably connected to the inner wall of the socket core insertion opening, and has mutually connected legs and baffles. The baffles can cover or block the socket core insertion opening by forward and reverse rotation;

[0024] An operating member is rotatably arranged in the mounting groove of the wall of the socket core body, with the outer end remaining in the slot and the inner end close to the leg of the dustproof rotating piece, so that after the outer end of the operating member is pushed by the plug shell, the other end can drive the dustproof rotating piece to rotate;

[0025] A reset torsion spring has two ends respectively fixed to the dustproof rotating piece and the socket core body, so that the dustproof rotating piece always keeps the tendency of covering the insertion opening of the socket core body.

[0026] Further improvement: the cross section of the dustproof rotating piece is J-shaped, and is rotatably connected to the inner wall of the socket core insertion port through a connecting shaft pin at the corner.

[0027] Further improvement: the cross section of the operating member is in a "<" shape.

[0028] In order to protect the operating member, finally: an inclined surface is provided at the rear of the installation groove, and rotating openings are provided at the upper and lower ends of the front side of the inclined surface to match the two ends of the operating member, so that the operating member can achieve limited rotation.

[0029] The technical solution of the present invention to solve another technical problem is: a connector with dustproof function, which includes a plug and a socket that are plugged into and matched with each other, characterized in that: the plug adopts any one of the above-mentioned plugs with dustproof function, and the socket adopts any one of the above-mentioned sockets with dustproof function.

[0030] Compared with the prior art, the advantages of the present application are as follows: The dust-proof plug is provided with a first dust-proof component in the plugging direction. When the plug is inserted into the socket, the dust-proof front cover of the first dust-proof component is pushed, driving the dust-proof baffle to rotate along the guiding hole, and the insertion port is cooperatively opened. When the plug is pulled out, the elastic member helps the dust-proof front cover to actively reset and drives the dust-proof baffle to reset, so that the dust-proof function takes effect. The double-door and double-spring reset structure is adopted, with higher structural reliability and better dust-proof effect, overcoming the defect of the traditional plug without a dust-proof protection structure; the dust-proof socket is provided with a second dust-proof component, which is implemented by a lever-like operating member, with higher active dust-proof reliability. When the plug is inserted, the outer shell of the plug pushes the operating member to drive the dust-proof rotating piece to open for the plug to be inserted. When the plug is pulled out, the reset torsion spring drives the second dust-proof component to reset, realizing the active dust-proof function, overcoming the low reliability of the traditional structure using an elastic eccentric structure and the unexpected situation of non-return; the protection level of the entire connector can reach IP65. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a perspective view of the plug of the present invention.

[0032] Figure 2 It is a cross-sectional view of the first dust-proof component of the plug of the present invention in the closed state.

[0033] Figure 3 It is a cross-sectional view of the first dust-proof component of the plug of the present invention in the process of opening.

[0034] Figure 4 It is a cross-sectional view of the first dust-proof component of the plug of the present invention in the open state.

[0035] Figure 5 It is an exploded structural schematic diagram of the first dust-proof component of the plug of the present invention.

[0036] Figure 6 It is a perspective view of the socket of the present invention.

[0037] Figure 7 It is a cross-sectional view of the socket of the present invention.

[0038] Figure 8 It is an exploded structural schematic diagram of the socket of the present invention.

[0039] Figure 9 It is a cross-sectional view of the plug and socket of the present invention in the first plugging state.

[0040] Figure 10 It is a cross-sectional view of the plug and socket of the present invention in the second plugging state.

[0041] Figure 11 It is a cross-sectional view of the plug and socket of the present invention in the third plugging state.

[0042] In the figure, 1 is a plug, 2 is a plug housing, 3 is a first dust-proof component, 4 is a dust-proof front cover, 5 is an insertion hole, 6 is a dust-proof baffle, 7 is a left dust-proof plate, 8 is a right dust-proof plate, 9 is a connecting push arm, 10 is a pin shaft, 11 is a dust-proof rear cover, 12 is a through hole in the rear cover, 13 is a pushing part, 14 is an elastic element, 15 is a guiding groove, 16 is a pin shaft hole, 17 is a spring hole, 18 is a baffle part, 19 is a pushing column, 20 is a socket, 21 is a reset torsion spring, 22 is a guiding hole, 23 is a limiting part, 24 is a socket housing, 25 is a socket core, 26 is an insertion port, 261 is an insertion port of the socket housing, 262 is an insertion port of the socket core, 263 is an insertion port for the protective cover sleeve, 27 is a second dust-proof component, 28 is a dust-proof rotating piece, 29 is a support leg, 30 is a baffle, 31 is an operating part, 32 is a mounting hole groove, 33 is a mounting groove, 34 is an insert core, 35 is a slot, 36 is a connecting pin shaft, 37 is an inclined surface, 38 is an upper rotation port, 39 is a lower rotation port, 40 is a protective cover sleeve, 41 is a fixing block. Detailed implementation manners

[0043] The following further describes in detail the implementation manners of the present invention for patents in combination with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention for patents, but cannot be used to limit the scope of the present invention for patents. In the description of the present invention for patents, unless otherwise stated, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention for patents and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention for patents. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention for patents, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention for patents can be understood according to specific circumstances.

[0045] The present invention will be further described in detail below in combination with the embodiments of the accompanying drawings.

[0046] As Figures 1 to 11, A connector with a dust-proof function, which includes a plug 1 and a socket 20 that are inserted and mated with each other. The improvement of its invention lies in that the plug 1 adopts the following plug 1 with a dust-proof function, and the socket 20 adopts the following socket 20 with a dust-proof function.

[0047] As Figures 1 to 5 、9, A plug 1 with a dust-proof function, which can be inserted and connected with a mating socket 20 to produce optical and / or electrical conduction at least in one insertion direction. It includes a plug housing 2. The plug housing 2 can be made of stainless steel material, which is more durable than zinc alloy, not easy to rust. A fiber optic ferrule or / and a cable ferrule is arranged in the plug housing 2. Different function ferrules 34 can be selected according to needs here. Among them, a first dust-proof component 3 is provided at the front end of the plug 1. The key point of its invention is that the first dust-proof component 3 includes: a dust-proof front cover 4. The front part of the dust-proof front cover 4 is the face, and its outer contour shape is adapted to the mouth part of the plug housing 2. The rear part is the insertion part. An insertion hole 5 is opened in the middle of the dust-proof front cover 4 to facilitate insertion and connection with the socket core 25. A dust-proof baffle 6, which is divided into a left dust-proof plate 7 and a right dust-proof plate 8 arranged on the left and right. They can be moved and combined to form the dust-proof baffle 6. The left dust-proof plate 7 and the right dust-proof plate 8 each have a connecting push arm 9. A pin shaft 10 is arranged on the connecting push arm 9, so that the left dust-proof plate 7 and the right dust-proof plate 8 are respectively pivotally connected to the inner side wall of the insertion part of the insertion hole 5 of the dust-proof front cover 4. A push column 19 is also arranged on the connecting push arms 9 of the left dust-proof plate 7 and the right dust-proof plate 8. A dust-proof rear cover 11, whose outer contour shape is adapted to the cavity of the plug housing 2. A rear cover through hole 12 is opened in the middle of the dust-proof rear cover 11. And the dust-proof rear cover 11 has a pushing part 13 forward. A guiding hole 22 is arranged on the pushing part 13, which is movably inserted and connected with the push column 19 on the connecting push arm 9, so as to open or close the dust-proof baffle 6, thereby covering or opening the insertion hole 5 of the dust-proof front cover 4. At least one elastic element 14 is supported between the dust-proof front cover 4 and the dust-proof rear cover 11 to realize the backward movement or forward movement reset of the dust-proof front cover 4. The first dust-proof component 3 is sleeved on the fiber optic ferrule or / and the cable ferrule and fixed on the inner wall fixing groove of the plug housing 2 through a fixing block 41 on the dust-proof rear cover 11. The first dust-proof component 3 is made entirely of stainless steel, which is more durable than zinc alloy and not easy to rust.

[0048] In order to improve the working stability and reliability and make the activity smooth, a guiding matching mechanism is provided between the dustproof front cover 4 and the dustproof rear cover 11. A guide groove 15 is provided on the plug-in portion of the dustproof front cover 4 in the axial direction. A pin shaft hole 16 is opened in the guide groove 15 for the movement of the pin shaft 10 on the connecting push arm 9. At the same time, the pushing portion 13 of the dustproof rear cover 11 also serves as a guide block, which can slide relatively forward and backward when placed in the guide groove 15. The elastic element 14 is supported between the bottom of the guide groove 15 and the top of the pushing portion 13. Usually, two pairs of spring holes 17 are provided between the dustproof front cover 4 and the dustproof rear cover 11. An elastic element 14 is fixed in each pair of spring holes 17. The elastic element 14 is preferably a spring. In this way, the double pushing portion 13 plus double spring reset are adopted, the structural reliability is higher, and the dustproof effect is better.

[0049] The left dust shield 7 and the right dust shield 8 are arranged symmetrically on the left and right, and correspondingly, the guide matching mechanism and the spring are also arranged symmetrically on the top and bottom. The left dust shield 7 and the right dust shield 8 are both U-shaped, with a baffle portion 18 in front and connecting push arms 9 on the upper and lower sides. The connecting push arms 9 are provided with a push column 19 and a pin shaft 10, which are respectively matched and connected with the guide hole 22 on the dustproof rear cover 11 and the pin shaft hole 16 on the dustproof front cover 4 to realize rotation opening or closing. When the dustproof front cover 4 is pushed, the left dust shield 7 and the right dust shield 8 are driven to rotate, thereby opening the dust shield 6 on the plug 1 with dustproof function, so that the plug core 34 can be connected to the socket 20.

[0050] Finally, the top of the dustproof rear cover 11 has a limiting portion 23 with a guide edge. When the left dust shield 7 and the right dust shield 8 are rotated to be opened, the left dust shield 7 and the right dust shield 8 collide with the limiting portion 23 on the top of the dustproof rear cover 11 to realize the limiting function, thereby preventing the left dust shield 7 and the right dust shield 8 from excessive rotation, thereby reducing the service life.

[0051] like Figures 6 to 8, A socket 20 with a dust-proof function can be plugged and connected with a mating plug 1 in at least one plugging direction to achieve optical or / and electrical conduction. It includes a socket housing 24, and a socket core 25 is fixed inside the socket housing 24. The socket core 25 can be an optical fiber core or / and a cable core. Here, cores with different functions can be selected according to needs to cooperate with the plug 1. The interior of the socket housing 24 uses a high-precision ceramic sleeve with a precision of plus or minus 0.0005 mm and low optical fiber insertion loss. The socket housing 24 and the socket core 25 are respectively provided with insertion ports 26 in the insertion direction, namely the socket housing insertion port 261 and the socket core insertion port 262. Among them, a second dust-proof component 27 is provided at the front end of the socket 20. The key point of its invention is that the second dust-proof component 27 includes: a slot 35 is provided between the socket housing 24 and the socket core 25, and the slot 35 matches the plug housing 2. Usually, the slot 35 is formed by an annular gap between the socket housing 24 and the socket core 25, and its thickness is adapted to the thickness of the mouth part of the plug housing 2 to facilitate its insertion. The cross-section of the dust-proof rotating piece 28 is in a J shape, and it is rotatably connected to the inner wall of the socket core insertion port 262 through a connecting shaft pin 36 at the corner part. It has a connecting leg 29 and a baffle 30 connected to each other. The baffle 30 can rotate forward and backward to cover or open the socket core insertion port 262. This rotatable connection usually adopts a shaft connection, and the dust-proof rotating piece 28 is connected to the mounting hole groove 32 on the inner wall of the socket core insertion port 262 with the connecting shaft pin 36. Of course, a connecting shaft or the like can also be used, and the effect is similar. There is also an operating piece 31, whose cross-section is in a "<" shape. The operating piece 31 is rotatably arranged in the mounting groove 33 on the wall surface of the socket core 25. This rotatable connection is also realized by connecting with a shaft pin or the like in the mounting groove 33. The outer end is left in the slot 35, and the inner end is close to the connecting leg 29 of the dust-proof rotating piece 28, so that when the outer end of the operating piece 31 is pushed by the plug housing 2, the other end can drive the dust-proof rotating piece 28 to rotate. A slope 37 is provided at the rear part of the mounting groove 33, and upper and lower rotating openings 38 and 39 are provided at the upper and lower ends on the front side of the slope 37 to match the two ends of the operating piece 31 to limit the rotation of the operating piece 31. The two ends of the reset torsion spring 21 are respectively fixed to the dust-proof rotating piece 28 and the socket core 25, so that the dust-proof rotating piece 28 always keeps the trend of covering the insertion port 26 to achieve the dust-proof function. Finally, a protective cover sleeve 40 is sleeved on the front end of the socket core 25. An insertion port is also opened in the middle part of the protective cover sleeve 40, which is the protective cover sleeve insertion port 263. The protective cover sleeve 40 has an annular inclined surface that cooperates with the dust-proof rotating piece 28 along the protective cover sleeve insertion port 263 to achieve a good shielding effect. The protective cover sleeve insertion port 263, the socket housing insertion port 261 and the socket core insertion port 262 described above constitute the insertion port 26 of the socket 20.

[0052] When the user uses this product, he only needs to hold the plug shell 2 with his hand and insert the plug 1 into the insertion port 26 of the socket 20. When the plug shell 2 is about to enter the slot 35 between the socket shell 24 and the socket core 25, the front end protection cover sleeve 40 of the socket core 25 will support the dustproof front cover 4 of the plug 1, so that the dustproof front cover 4 overcomes the elastic force of the elastic element 14 and retreats backwards. Because of the relative effect of the forces, the pushing portion 13 similar to the dustproof rear cover 11 cooperates with the guide hole 22 and the pushing column 19 to push the connecting push arm of the left dust shield 7 and the right dust shield 8 to rotate, thereby opening the dust shield 6 until it is in place and limited. At this time, the plug 1 is further pushed with force to make the plug shell 2 go deep into the slot 35 and can be engaged with the operating member 31 conflicts with each other, causing the operating member 31 to rotate, further driving the dustproof rotating piece 28 to rotate and open, thereby opening the insertion port 26 of the socket 20, so that the plug core 34 of the plug 1 can be plugged and connected with the core body of the socket 20; on the contrary, when the user pulls out the plug 1 from the insertion port 26 of the socket 20, the reset torsion spring 21 of the socket 20 drives the operating member 31 and the dustproof rotating piece 28 to rotate in the opposite direction and reset, and the dustproof front cover 4 of the plug 1 will also be reset along the direction of the guide groove 15 due to the force applied by the elastic element 14, and the pushing portion 13 of the dustproof rear cover 11 cooperates with the guide hole 22 and the pushing column 19 to push the connecting push arms of the left dust shield 7 and the right dust shield 8 to rotate in the opposite direction, thereby closing the dust shield 6 until it is in place.

Claims

1. A plug with a dust-proof function, which can be plugged and connected with a mating socket in at least one plugging direction to achieve optical or / and electrical conduction, includes a plug housing, and an optical fiber ferrule or / and a cable ferrule is arranged in the plug housing. It is characterized in that: The front end of the plug is provided with a first dust-proof component, and the first dust-proof component includes: A dust-proof front cover, the front part of the dust-proof front cover is the face part, and the rear part is the insertion part; an insertion hole is opened in the middle of the dust-proof front cover; A dust-proof baffle, which is divided into a left dust-proof plate and a right dust-proof plate arranged in a left-right layout. The left dust-proof plate and the right dust-proof plate each have a connecting push arm, and a pin shaft is arranged on the connecting push arm, so that the left dust-proof plate and the right dust-proof plate are respectively pivotally connected to the inner side wall of the insertion part of the insertion hole of the dust-proof front cover. A push column is also arranged on the connecting push arms of the left dust-proof plate and the right dust-proof plate; A dust-proof rear cover, a rear cover through hole is opened in the middle of the dust-proof rear cover, and furthermore, the dust-proof rear cover has a pushing part facing forward. The pushing part is provided with a guiding hole, which is movably inserted and connected with the push column on the connecting push arm; so that the dust-proof baffle can be opened and closed to cover or block the insertion hole; At least one elastic element, which is supported between the dust-proof front cover and the dust-proof rear cover to realize the backward movement and forward reset of the dust-proof front cover.

2. The plug with a dust-proof function according to claim 1, wherein: A guiding and matching mechanism is provided between the dust-proof front cover and the dust-proof rear cover.

3. The plug with a dust-proof function according to claim 2, wherein: The guiding and matching mechanism is: A guiding groove is arranged on the insertion part of the dust-proof front cover, and a pin shaft hole for the pin shaft on the connecting push arm to move is opened in the guiding groove; A guiding block, the pushing part of the dust-proof rear cover also serves as the guiding block, and can slide back and forth relatively when placed in the guiding groove.

4. The plug with a dust-proof function according to claim 3, characterized in that: The elastic element is a spring supported between the bottom of the guiding groove and the top of the pushing part.

5. The plug with a dust-proof function according to claim 4, characterized in that: The left dust-proof plate and the right dust-proof plate are arranged symmetrically left and right. Correspondingly, the guiding and matching mechanism and the spring are also arranged symmetrically up and down.

6. The plug with a dust-proof function according to claim 5, characterized in that: Both the left dust-proof plate and the right dust-proof plate are U-shaped. The front is the baffle part, and the upper and lower sides are the connecting push arms. The connecting push arms are provided with a push column and a pin shaft, which are respectively matched with the guiding hole on the dust-proof rear cover and the pin shaft hole on the dust-proof front cover to realize rotation and opening or closing.

7. The plug with a dust-proof function according to claim 6, characterized in that: The top of the dust-proof rear cover has a limiting part with a guiding edge. When the left dust-proof plate and the right dust-proof plate rotate to the end of opening, the left dust-proof plate and the right dust-proof plate are in contact with the limiting part at the top of the dust-proof rear cover to realize the limiting function.

8. The plug with a dust-proof function according to claim 7, characterized in that: The first dust-proof component is sleeved on the optical fiber ferrule and / or the cable ferrule, and is fixed on the inner wall fixing groove of the plug housing through the fixing block on the dust-proof rear cover.

9. A socket with a dust-proof function, which can be plugged and connected with a mating plug in at least one insertion direction to achieve optical and / or electrical conduction, includes a socket housing, a socket core is fixed inside the socket housing, the socket housing and the socket core are provided with respective insertion ports in the insertion direction, and a second dust-proof component is provided at the front end of the socket; characterized in that The second dust-proof component includes: A slot, there is a gap between the socket housing and the socket core, which is matched with the plug housing; A dust-proof rotating piece, which is rotatably connected to the inner wall of the insertion port of the socket core. It has a connecting leg and a baffle, and the baffle can rotate forward and backward to cover or block the insertion port of the socket core; An operating piece, which is rotatably arranged in the installation groove on the wall surface of the socket core. The outer end is left in the slot, and the inner end is close to the connecting leg of the dust-proof rotating piece, so that when the outer end of the operating piece is pushed by the plug housing, the other end can drive the dust-proof rotating piece to rotate; A reset torsion spring, the two ends are respectively fixed to the dust-proof rotating piece and the socket core, so that the dust-proof rotating piece always keeps the tendency of covering the insertion port of the socket core.

10. The socket with a dust-proof function according to claim 9, wherein: The cross section of the dust-proof rotating piece is J-shaped, and is rotatably connected to the inner wall of the insertion port of the socket core through a connecting pin shaft at the corner part.

11. The socket with a dust-proof function according to claim 9, wherein: The cross section of the operating piece is "<” shaped.

12. The socket with dust-proof function according to claim 9, wherein: The rear part of the installation groove is provided with an inclined surface, and rotation ports are provided at the upper and lower ends on the front side of the inclined surface to match the two ends of the operating member, so that the operating member can achieve limited rotation.

13. A connector with a dust-proof function, which includes a plug and a socket that are inserted and mated with each other, and is characterized in that: The plug used is the plug with a dust-proof function described in any one of claims 1 to 8, and the socket used is the socket with a dust-proof function described in any one of claims 9 to 12.

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