CN114843818A - New locking structure connector and assembly - Google Patents

Abstract

The invention relates to a novel locking structure connector and an assembly. A locking convex part is arranged on the spigot end of the connector; and locking unit, the connecting cap is arranged outside the ferrule housing and can slide along the axial direction of the ferrule housing; the locking unit is elastic and can deform under the action of external force, and the locking unit automatically rebounds when the external force disappears; Under the action, the locking protrusion pushes the locking unit radially upward and then falls into the groove, and the locking unit rebounds to clamp the locking protrusion in the groove to realize the locking of the connector; when unlocking, the connecting cap In cooperation with the locking unit, the locking unit is lifted radially upwards, and the locking convex part comes out of the groove to realize the unlocking of the connector. The invention can realize one-step locking without machining threads and setting return springs, reduces installation space, reduces the number of parts, simplifies assembly steps, and has the advantages of small pull-out force and good hand feeling.

Description

New locking structure connector and assembly

technical field

The invention relates to the technical field of connection and locking, in particular to a novel locking structure connector and an assembly.

Background technique

With the development of communication technology and the rapid development of connection technology, connectors, as one of the essential basic optical passive devices in the connection process, have developed into a wide variety of products with complete categories and diverse structures. With the development of connector products, low cost, easy operation, high reliability and miniaturization are the development trends of connectors in the future. Therefore, higher requirements are also put forward for the locking structure of connectors. There are generally three types of tight structures: thread form, bayonet form, and push-pull form.

The first is the locking structure in the form of a thread. As shown in Figure 1, the spigot end and the spigot end need to be connected by thread locking. During installation, the spigot end needs to be screwed to the counter spigot end. Large space, the installation operation is time-consuming and complicated. It is necessary to reserve the installation space for the twisted thread when pre-installing in the communication equipment. At the same time, it is necessary to set a seal inside the mating end, and the processing of the thread features on the parts is also complicated. .

The second is the locking structure in the form of a bayonet. As shown in Figure 2, the insertion end also needs to be connected to the opposite insertion end by means of a knob. The installation requires a large space, the installation is complicated, and the hand feel is poor. At the same time, the insertion end It is composed of multiple parts, the structure of the connecting nut is relatively complex, the processing process is complex, there are many parts, and the processing cost is high.

The third is the push-pull locking structure. As shown in Figure 3, the plug-in end is connected to the plug-in connector by means of push-pull locking. This locking structure saves installation space, but the plug-in end has multiple parts. The split structure, the connection nut, the ferrule shell and the spring need to be assembled together before use, the assembly steps are complicated, the parts are many, and the efficiency is low. The insertion end is a spring-type multi-body structure, and a return spring is required between the connecting nut and the ferrule housing, which is costly.

The fourth locking structure is also push-pull. As shown in Figure 4, the plug-in end is connected to the plug-in connector by means of push-pull locking. This locking structure saves installation space, and the plug-in end is a single-part connector. One-piece structure, relying on the locking tab of the part itself to achieve locking with the spigot end. This type of locking method has a simple structure and can realize quick insertion and removal, but because both insertion and removal need to overcome the The squeezing force of the movable unit ensures the airtightness and requires a large pulling force, and the operation feel is poor.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a novel locking structure connector and assembly. A groove and a locking unit are arranged on the ferrule housing at the insertion end to form a locking portion. The joint can realize one-step locking without processing threads, which solves the problems of large installation space and complex parts processing technology of the existing thread locking connectors. By opening the hook of the plug end connecting cap itself or cooperating with the locking unit on the pressure plate to realize the unlocking of the plug end and the plug end and the reset of the connecting cap, there is no need to set a return spring, which solves the problem of many parts of the existing push-pull locking connector. , the assembly is complex and the cost is high. When unlocking, the opening mechanism or the bevel feature on the pressing block is matched with the bevel feature on the locking unit, which reduces the pull-out force when unlocking, and solves the problem of large pull-out force and poor hand feel when the existing push-pull locking connector is unlocked. .

One of the objectives of the present invention is to provide a connector with a novel locking structure, the pair of spigot ends and the spigot ends are characterized in that at least one locking protrusion is provided on the spigot ends; the spigot ends at least include a connection cap and Insert housing, at least one groove and at least one locking unit are arranged on the insert housing, the connecting cap is arranged outside the insert housing and can slide axially along the insert housing; the locking unit has elasticity , it can deform under the action of external force, and the locking unit automatically rebounds when the external force disappears; when the connector is locked to the insert, under the action of the inserting force, the locking protrusion pushes the locking unit radially upward and falls into the groove , the locking unit rebounds and the locking convex part is stuck in the groove to realize the locking of the plug end and the plug end; when unlocking, the connection cap cooperates with the locking unit to lift the locking unit radially upward, and the locking convex The part comes out of the groove to realize the unlocking of the spigot end and the spigot end.

Through the above structure, the present invention can realize the one-step locking of the connector without processing the thread, so it does not need to reserve the installation space for the knob thread, saves the installation space to a certain extent, simplifies the parts processing process, and solves the problem of the existing thread The installation space of the locking connector is large, and the processing technology of the parts is complicated. The unlocking and the reset of the connecting cap are realized through the cooperation between the connecting cap of the inserting end itself and the ferrule housing. It is not necessary to set a return spring between the connecting cap of the inserting end and the inserting insert housing, which reduces the number of parts and simplifies the assembly steps. The assembly efficiency is improved, and the problems of many parts, complex assembly and high cost of the existing push-pull locking connector are solved.

Further, the locking protrusion is a movable unit or a snap protrusion, one end of the snap protrusion is connected to the opposite end housing, and the other end is provided with a protrusion structure. The unit or the protruding structure falls into the groove and is pressed by the locking unit, and the above structure can cooperate with the locking unit at the insertion end to realize self-locking.

Further, the connecting cap is provided with an opening hook or a pressing block, the opening hook or pressing block has a first inclined surface, and the locking unit has a second inclined surface; when unlocking, pull the connecting cap to make it along the ferrule. The shell moves axially, and the first slope on the opening hook or pressing block cooperates with the second slope on the lock unit to lift the lock unit radially upward, so that the axial action of the connecting cap is transformed into the lock unit. radial movement, thereby releasing the space required for the locking protrusion to escape the groove, and realizing the unlocking of the connector; after unlocking, the locking unit springs back, and the first inclined surface cooperates with the second inclined surface to recover the diameter of the locking unit when it rebounds. The repositioning of the connecting cap is achieved by converting the movement into an axial movement of the connecting cap. The above structures and functions reduce the pull-out force when unlocking, and solve the problems of large pull-out force and poor hand feeling when the existing push-pull locking connector is unlocked.

Further, the ferrule housing is also provided with a blocking structure, which is used to assist the locking protrusion to push the locking unit upward, and also prevent the locking protrusion from coming out of the groove when the connector is locked. .

Another object of the present invention is to provide a protective cover, the protective cover includes a protective cap and an inner casing, the protective cap is arranged outside the inner casing and can slide axially along the inner casing, and the inner casing is provided with at least one concave A slot and at least one locking unit; the locking unit has elasticity, and can be deformed under the action of external force, and the locking unit automatically rebounds when the external force disappears.

The protective cover can be used as an independent part to cooperate with the spigot end connector to realize one-step installation and locking. The spigot end connector is provided with at least one locking convex part, and the locking convex part locks the locking unit diameter After being pushed upwards, it falls into the groove, and then the locking unit rebounds to lock the locking protrusion in the groove; when unlocking, the protective cap cooperates with the locking unit to lift the locking unit radially upward. , the locking convex part comes out of the groove to realize the unlocking of the protective cap and the spigot connector.

Further, the inner casing is also provided with a blocking structure, the blocking structure assists the locking protrusion to push the locking unit upward, and also prevents the locking protrusion from the groove in the locked state of the protective cover and the spigot connector. come out.

Further, the protective cap is also provided with an opening hook or a pressing block, the opening hook or pressing block has a first inclined surface, and the locking unit has a second inclined surface; when the protective cover is unlocked from the spigot connector, pull the protective cover. The cap makes it move axially along the inner shell, and the first slope on the opening hook or the pressing block cooperates with the second slope on the locking unit to lift the locking unit radially upward, so that the axial action of the protective cap is transformed. For the radial action of the locking unit, the space required for the locking protrusion to escape from the groove is released, and the protective cap and the spigot connector are unlocked. After unlocking, the locking unit rebounds, and the first slope and the second The cooperation of the inclined surface converts the radial action of the locking unit into the axial action of the protective cap to realize the reset of the protective cap.

The above structure simplifies the unlocking structure, and does not need to set a reset spring. After unlocking, the second slope of the locking unit cooperates with the first slope of the opening hook or the pressing block to realize the reset of the connecting cap, which reduces the number of parts and simplifies The assembly steps are eliminated, the assembly efficiency is improved, the cost is reduced, and a better plug-in and pull-out feel is ensured.

Yet another object of the present invention is to provide an unlocking tool, the unlocking tool includes an unlocking cap, and the unlocking cap is provided with an opening hook or a pressing block; the unlocking cap is used as an independent unlocking tool to unlock the connector or the protective cover, The connector includes a pair of plug ends and a plug end, the plug end and the protective cover are respectively provided with a ferrule housing and an inner housing, and at least one lock is provided on the ferrule housing and the inner housing. The locking unit has elasticity and can be deformed under the action of external force, and the locking unit automatically rebounds when the external force disappears; It can slide axially along the ferrule housing or the inner housing; when unlocking, the opening hook or pressing block on the unlocking cap cooperates with the locking unit of the ferrule housing or the inner housing to lift the locking unit radially upward. , to unlock the connector or shield. Through the above structure, the unlocking cap can be used as an independent unlocking tool to be used in conjunction with the connector or the protective cover to unlock.

Further, the opening hook or pressing block has a first slope, and the locking unit has a second slope; when unlocking, the first slope on the opening hook or pressing block is matched with the second slope on the locking unit , so that the radial or axial action of the unlocking cap is transformed into the radial action of the locking unit, so that the locking unit is lifted radially upward to realize the unlocking of the connector or the protective cover. The structure reduces the pull-out force when unlocking, so that the product has a better plug-and-pull feel.

Beneficial technical effects of the present invention:

(1) The plug-in end of the present invention can be directly matched and assembled with the counter-plug-end connector to realize one-step installation and locking. The locking part of the inserting end includes a groove and a locking unit, and realizes self-locking after the opposite insertion by cooperating with the locking convex part (movable unit or the locking projection) of the opposite inserting end. There is no need to process threads, and there is no need to reserve installation space for knob threads, which saves installation space to a certain extent and simplifies parts processing.

(2) The present invention realizes the quick unlocking of the spigot end and the spigot end and the reset of the connecting cap through the cooperation of the opening hook or the pressing plate of the spigot end connecting cap itself and the locking unit. A return spring is arranged between the ferrule housings, which reduces the number of parts, simplifies assembly steps, improves assembly efficiency, and reduces costs. The opening structure or the first slope on the pressing block cooperates with the second slope of the locking unit, which reduces the pull-out force required for pulling out the mating end, which not only saves the cost of parts and assembly, but also ensures a better plug-in feel .

(3) The plug-in end of the present invention can be used as a protective cover for assembling with the spigot end connector to protect the spigot end connector. The protective cover can pass through its own locking part (groove and The locking unit) can be installed and locked in one step by cooperating with the locking convex part of the spigot end, and no thread processing is required, which reduces the installation space and simplifies the processing process.

(4) At the same time, the connecting cap of the mating end of the present invention can also be used as an independent unlocking tool (defined as an unlocking cap). The unlocking cap is installed on the outside of the insertion end or the inner shell of the protective cover by means of rear installation; when unlocking, the opening hook or pressing block on the unlocking cap cooperates with the locking unit of the inner housing to lift the locking unit radially upward. It can realize the unlocking of the connector or the protective cover. After unlocking, the locking unit automatically rebounds without setting a return spring, which reduces the number of parts, simplifies the assembly steps, and reduces the pull-out force required to pull out the mating end. Guaranteed a better plug-in feel.

Description of drawings

FIG. 1 is an example of a locking structure in the form of existing threads, wherein (a) is a schematic diagram of the structure of the spigot end and the counter spigot end, and (b) is a cross-sectional view of the spigot end;

2 is an example of a locking structure in the form of an existing bayonet, wherein (a) is a schematic structural diagram of the insertion end and the opposite insertion end, and (b) is a cross-sectional view of the insertion end;

Fig. 3 is the first example of the locking structure in the existing push-pull form, wherein (a) is a schematic diagram of the structure of the insertion end and the opposite insertion end, and (b) is a cross-sectional view of the insertion end;

Fig. 4 is the second example of the locking structure in the existing push-pull form, and Fig. 4 is the state diagram of locking in place;

Fig. 5 is the example 1 of the novel locking structure connector of the present invention;

Figure 6 is a cross-sectional view of the mating end in Figure 5;

Fig. 7 is the schematic diagram of locking the spigot end and the spigot end in place in Fig. 5;

Fig. 8 is the second example of the locking structure connector of the present invention;

Fig. 9 is the schematic diagram of locking the spigot end and the spigot end in place in Fig. 8;

Fig. 10 is the third example of the locking structure connector of the present invention;

Figure 11 is a cross-sectional view of the mating end in Figure 10;

Fig. 12 is a schematic diagram of locking the spigot end and the spigot end in place in Fig. 10;

Fig. 13 is the fourth example of the locking structure connector of the present invention;

Fig. 14 is the schematic diagram of locking the spigot end and the spigot end in place in Fig. 13;

Ⅰ-pair of spigot end, Ⅱ-insert end, Ⅲ-threaded area, Ⅳ-seal, Ⅴ-staple, Ⅵ-snap ring, Ⅶ-spring.

1- Active unit, 2- Connecting cap, 3- Insert housing, 4- Blocking structure, 5- Locking unit, 6- Groove, 7- Inserting space, 8- Spreading hook, 9- Inclined surface I, 10 -Chamfer II, 11-seal, 12-limit step, 13-buckle protrusion, 14-accommodating groove, 15-protrusion structure, 16-press block, 17-bevel III, 18-protrusion, 19- Bevel IV.

Detailed ways

In order to better understand the content of the present invention, the present invention will be further described below with reference to specific embodiments and accompanying drawings. The following examples are implemented based on the technology of the present invention, and provide detailed implementation modes and operation steps, but the protection scope of the present invention is not limited to the following examples.

The connector of the novel locking structure of the present invention includes a pair of spigot end I and a mating end II. In the embodiment of the present invention as shown in FIG. 5 , at least one locking protrusion is provided on the pair of spigot end housing, which is inserted into the spigot end. The end at least includes a connecting cap 2 and a ferrule housing 3, at least one groove 6 and at least one locking unit 5 are provided on the ferrule housing, and an insertion space 7 is provided between the locking unit and the ferrule housing for Insert the spigot housing. The locking unit has a certain elasticity, and can produce a certain deformation under the action of external force, and the locking unit automatically rebounds when the deformation disappears after the external force disappears. When the connector is locked to the plug, under the action of the insertion force, the locking protrusion pushes the locking unit radially upward and falls into the groove. After that, the locking unit rebounds to lock the locking protrusion in the groove. Locking the spigot end and the spigot end is achieved in the middle of the lock; when unlocking, the connecting cap cooperates with the locking unit to lift the locking unit radially upward, releasing the space required for the locking protrusion to escape from the groove, so that the locking protrusion Get out of the groove to realize the unlocking of the spigot end and the spigot end.

In a preferred embodiment, the front end of the groove 6 is also provided with a blocking structure 4, the blocking structure 4 is used to assist the locking protrusion to push the locking unit upward, and can also prevent the locking protrusion from being locked when the connector is locked. out of the groove.

In the embodiment shown in FIG. 5-FIG. 9, the inner wall of one end of the connecting cap and the spigot end is provided with an opening hook 8, the opening hook has a slope I9, and the end of the locking unit and the spigot end is inserted It has an inclined plane II10. In the initial state, the inclined plane I and the inclined plane II have a certain contact distance.

The locking convex portion has a large diameter section and a small diameter section, and the large diameter section can be caught in the groove by the locking unit during locking through the radial difference between the large diameter section and the small diameter section.

In the embodiment shown in FIG. 5 , the locking protrusion adopts a spherical movable unit 1, and the spherical movable unit can float radially in the mounting hole of the spigot housing and will not fall off from the mounting hole. At this time, the spherical movable unit 1 corresponds to the large-diameter section of the locking protrusion, and the housing where the mounting hole is located corresponds to the small-diameter section of the locking protrusion. When the mating end is inserted into the mating end, the mating end is pushed to connect with the mating end, and the mating end housing enters the insertion space 7 between the ferrule housing and the locking unit. Define the upper and lower in the legend shown in Figure 7 as radially upward and radially downward, respectively. During the insertion process, the movable unit 1 is pushed up by the blocking structure 4 on the ferrule housing, so that the movable unit radially upwards Float and push up the locking unit radially upward, and the locking unit produces a certain deformation; the movable unit pushes the locking unit radially upward and finally falls into the groove 6, after which the locking unit rebounds and presses the movable unit , the movable unit is clamped in the groove, so as to realize the locking of the connector to the spigot end and the spigot end. At the same time, the ferrule housing of the spigot end cooperates with the seal 11 of the spigot end to achieve IP-level sealing.

In order to achieve locking, the radial distance of the insertion space between the ferrule housing and the locking unit should be exactly equal to or slightly larger than the thickness of the ferrule housing but smaller than the radial dimension of the movable unit. In the embodiment shown in Figure 5, the movable unit is made of steel balls or spherical parts of other materials, and the radial distance of the insertion space should be exactly equal to or slightly larger than the thickness of the spigot housing but smaller than the diameter of the steel balls or spherical parts , so that in the locked state, the locking unit can press the movable unit to achieve reliable locking.

The locking unit is also provided with a limiting step 12 to realize the axial limit of the spigot end, preventing the spigot end from excessive displacement in the direction of the spigot end after the movable unit falls into the groove, so as to meet certain seismic requirements.

When unlocking, pull the connecting cap to the right as shown in Figure 7. During the process of moving the connecting cap shaft to the right, the locking unit is pulled up by opening the slope I9 on the hook and the slope II10 on the locking unit. In the middle, the inclined plane II10 slides upward relative to the radial direction along the inclined plane I9, so that the end of the locking unit with the inclined plane II10 is raised radially upwards, so that the axial action of the connecting cap is converted into the radial action of the locking unit, thereby releasing the movable unit. In the space required by the groove, the movable unit floats radially upwards out of the groove to realize the unlocking of the connector. After unlocking, loosen the connecting cap, the locking unit automatically rebounds due to its own elasticity, and the inclined surface I9 cooperates with the inclined surface II10 to convert the radial action of the locking unit during rebound into the axial action of the connecting cap to realize the reset of the connecting cap.

In order to meet the space required for the deformation of the locking unit, there should be a certain space between the locking unit and the shell of the connecting cap. Preferably, the arc transition or the conical surface is excessive between the blocking structure and the ferrule housing, so as to facilitate the displacement of the movable unit.

In the second embodiment of the present invention, the locking protrusion adopts the snap protrusion 13 to replace the movable unit 1 in the example of FIG. 5 , and the structure of the plug end remains unchanged. The structure of the plug end is shown in FIG. 8 . The body is provided with at least one snap protrusion and one snap protrusion accommodating groove 14 . In one embodiment, one end of the snap protrusion is connected to the spigot housing, and the other end is provided with a protrusion structure 15, and the protrusion structure 15 can be radially upward or radially directed in the receiving groove under the action of external force. The downward displacement produces a certain deformation. At this time, the raised structure 15 is equivalent to the large diameter section of the locking protrusion, and the snap protrusion is equivalent to the small diameter section of the locking protrusion.

The principle of locking and unlocking the spigot end and the spigot end shown in FIG. 8 is the same as that of the example shown in FIG. 5 . During the insertion process, the spigot housing is inserted into the insertion space of the spigot end, the protruding structure 15 is pushed up by the blocking structure on the ferrule housing, and the locking unit is pushed radially upward, and finally the protruding structure 15 is pushed up. When it falls into the groove, the locking unit rebounds and locks the protruding structure 15 in the groove to realize the locking of the spigot end and the spigot end; Hermetically sealed, IP-rated sealing can be achieved.

Likewise, the radial distance of the insertion space should be just equal to or slightly larger than the thickness of the spigot housing but smaller than the radial dimension at the raised structure.

When unlocking, based on the same principle as the example shown in Fig. 5, pull the connecting cap to the right as shown in Fig. 9. During the process of moving the connecting cap axis to the right, open the slope I9 on the hook and the slope on the locking unit. II10 cooperates to pull up the locking unit. During the pulling up process, the inclined plane II10 slides upwards relatively radially along the inclined plane I9, so that the end of the locking unit with the inclined plane II10 is lifted radially upwards, so that the axial action of the connecting cap is transformed into a lock. The radial action of the snap unit releases the space required for the protruding structure 15 to come out of the groove, and the snap protrusion floats radially upward to come out of the groove to realize the unlocking of the connector. After unlocking, loosen the connecting cap, the locking unit automatically rebounds due to its own elasticity, and the inclined surface I9 cooperates with the inclined surface II10 to convert the radial action of the locking unit during rebound into the axial action of the connecting cap to realize the reset of the connecting cap. Preferably, the contact surface of the protruding structure and the blocking structure is a circular arc transition or a conical transition, which is convenient for displacement.

The third embodiment of the present invention is shown in FIG. 10. The structure of the spigot end is the same as that of the spigot end shown in FIG. 5. The structure of the spigot end is shown in FIG. 11, including a connecting cap and a ferrule housing. A groove and at least one locking unit are provided. In a preferred embodiment, the front end of the groove is also provided with a blocking structure for assisting the locking protrusion to push the locking unit upward, which can also prevent the connector from being locked. The locking protrusion is released from the groove, and an insertion space is provided between the locking unit and the ferrule housing for inserting the ferrule housing. The locking unit has a certain elasticity, and can produce a certain deformation under the action of external force. After the external force disappears, the locking unit automatically rebounds when the deformation disappears. The end of the inner wall of the connection cap (defined as the end of the connection cap away from the mating end is the end, and the right end shown in Figure 12 is the end of the locking unit) is provided with at least one pressing block 16, and the pressing block has a slope III17. The end of the locking unit is provided with a protrusion 18, and the protrusion is provided with an inclined plane IV19. In the initial state, the inclined plane III and the inclined plane IV are in contact with each other.

The principle of locking the spigot end and the spigot end to the spigot shown in FIG. 10 is the same as the example shown in FIG. 5 , and will not be repeated here. When unlocking, pull the connecting cap to the right as shown in FIG. 12 or press the connecting cap radially toward the locking unit at the position of the pressure block 16 on the connecting cap. The protrusion 18 exerts pressure P through the inclined plane III17 and the inclined plane IV19. Part of this pressure P is decomposed into the _downward pressure P on the locking unit. Based on the lever principle, the other end of the locking unit (that is, the locking unit shown in Figure 12). The left end of the nipple) is lifted upwards, so that the axial action of the connecting cap is transformed into the radial action of the locking unit, thereby releasing the space required for the movable unit to escape from the groove, so that the movable unit floats radially upwards and escapes the groove to achieve unlocking. After unlocking, loosen the connecting cap, the locking unit automatically rebounds due to its own elasticity, and the inclined surface III17 and the inclined surface IV19 cooperate to convert the radial action of the locking unit during the rebound into the axial action of the connecting cap to realize the reset of the connecting cap.

Define the end of the lock unit away from the opposite insertion end as the end of the lock unit (the right end shown in Figures 11 and 12), and the other end as the insertion end of the lock unit (the left end shown in Figures 11 and 12), In order to realize the above unlocking process, there should be a certain space between the insertion end of the lock unit and the shell of the connection cap, and the end of the lock unit and the mortise shell are not connected, and the limit step 12 should be set on the lock Between the insertion end of the unit and the protrusion 18 of the locking unit, under the force of the pressure block of the connecting cap, the end of the locking unit is displaced radially downward, and the inserting end of the locking unit is displaced radially upward to release the movable unit The space required to get out of the groove.

The fourth embodiment of the present invention is shown in FIG. 13 . The structure of the spigot end is the same as that of the spigot end shown in FIG. 8 , and the structure of the spigot end is the same as that shown in FIGS. 10 and 11 .

The principle of locking and unlocking the insertion of the spigot end and the spigot end shown in FIG. 13 is the same as the principle of the example of FIG. 10 above. Finally, the protruding structure 15 on the snap protrusion falls into the groove and is pressed by the locking unit. The protruding structure, the blocking structure and the locking unit cooperate with each other to realize the locking of the plug end and the plug end of the connector. Likewise, the radial distance of the insertion space should be just equal to or slightly larger than the thickness of the spigot housing but smaller than the radial dimension at the raised structure.

When unlocking, based on the same principle as the example shown in FIG. 10, pull the connecting cap to the right as shown in FIG. 14 or press the connecting cap radially downward at the position of the pressure block 16 on the connecting cap, the pressure block on the connecting cap 16. Apply pressure P to the protrusion 18 on the locking unit. After passing through the inclined plane III17 and the inclined plane IV19, the pressure P is partially decomposed into the _downward pressure P on the locking unit. Based on the lever principle, the insertion end of the locking unit (ie The left end of the locking unit shown in Figure 14) is lifted upwards, so that the axial action of the connecting cap is converted into the radial action of the locking unit, thereby releasing the space required for the protruding structure to escape the groove and unlocking the connector. After that, the connecting cap is released, and the locking unit automatically rebounds due to its own elasticity. The inclined plane III17 and the inclined plane IV19 cooperate to convert the radial action of the locking unit during rebound into the axial action of the connecting cap to realize the reset of the connecting cap.

In this embodiment, except that the movable unit in FIG. 10 is replaced by the snap protrusion, other structures and functions are the same as the example shown in FIG. 10 , and will not be repeated.

The aforementioned plug-in end of the present invention can also be used as a protective cover for assembling with the plug-in connector to protect the plug-in connector. At this time, the protective cover includes a protective cap (equivalent to the plug-in connector The structure of the protective cap and the inner shell is the same as that of the connecting cap and the ferrule shell of the insertion end shown in Figure 5-Figure 14. The spigot connector has the same structure as the pair of spigots shown in Figures 5-14. The principle of locking and unlocking the installation of the protective cap and the spigot end is the same as that of the spigot end and the spigot end connector shown in Figures 5 to 14, and will not be repeated here.

Further, the connecting cap of the plug-in end of the present invention can also be used as an independent unlocking tool to unlock the connector or the protective cover, and the unlocking tool is defined as the unlocking cap. The hook or the pressing block has a first slope (respectively corresponding to slope I and slope III). Compared with the spigot end shown in Figure 5-Figure 14, the end or protective cover has less connection caps. After the spigot end and the spigot end or protective cover are locked, they can be unlocked by first or post-installation. The cap is installed outside the ferrule housing or the inner housing of the protective cover; when unlocking, press the unlocking cap radially downward or pull the unlocking cap to make it move radially or axially along the ferrule housing or the inner housing, The first slope on the opening hook or the pressing block cooperates with the second slope on the locking unit (equivalent to slope II and slope IV) to lift the locking unit radially upward, releasing the locking protrusion from the groove. space to unlock the connector or shield. The locking unit automatically rebounds after unlocking.

The above descriptions are only embodiments of the present invention, and do not limit the present invention in any form. The present invention may also have other forms of embodiments according to the above structures and functions, which will not be listed one by one. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solutions of the present invention to any person skilled in the art without departing from the scope of the technical solutions of the present invention. Inside.

Claims (10)

1. A connector, comprising a pair of spigot ends and a spigot end, characterized in that the spigot end is provided with at least one locking protrusion; the spigot end at least comprises a connection cap (2) and a ferrule shell (3) , at least one groove (6) and at least one locking unit (5) are arranged on the ferrule housing, and the connecting cap is provided outside the ferrule housing and can slide axially along the ferrule housing; the locking unit It has elasticity and can be deformed under the action of external force, and the locking unit automatically rebounds when the external force disappears; when the connector is locked to the insert, under the action of the inserting force, the locking protrusion pushes the locking unit radially upward and falls into In the groove, the locking unit rebounds to lock the locking convex part in the groove to realize the locking of the insertion end and the insertion end; when unlocking, the connection cap cooperates with the locking unit to lift the locking unit radially upwards. The space required for the locking convex part to escape from the groove is released, so that the locking convex part escapes from the groove, so as to realize the unlocking of the plug end and the insertion end. 2. The connector according to claim 1, characterized in that the locking protrusion is a movable unit (1) or a snap protrusion (13), and the snap protrusion is provided with a protrusion structure (15) , when the connector is locked, the movable unit (1) or the protruding structure (15) falls into the groove and is pressed by the locking unit. 3. The connector according to claim 1, characterized in that an opening hook (8) or a pressing block (16) is provided in the connecting cap, and the opening hook or pressing block has a first slope, and the locking unit (5) ) has a second slope; when unlocking, pull the connecting cap to move it axially along the ferrule housing, open the hook or the first slope on the pressure block and cooperate with the second slope on the lock unit to make the lock unit diameter Lift it upward to convert the axial action of the connecting cap into the radial action of the locking unit, thereby releasing the space required for the locking protrusion to escape the groove and unlocking the connector; after unlocking, the locking unit rebounds The first inclined surface cooperates with the second inclined surface to convert the radial action of the locking unit into the axial action of the connecting cap to realize the reset of the connecting cap. 4. The connector according to claim 1 or 3, characterized in that a blocking structure is also provided on the ferrule housing, which is used to assist the locking protrusion to push the locking unit upward, and also prevent the connector from being locked. The lower locking protrusion is released from the groove. 5. A protective cover, characterized by comprising a protective cap and an inner casing, the protective cap is arranged outside the inner casing and can slide axially along the inner casing, and the inner casing is provided with at least one groove (6) and at least one groove. A locking unit (5); the locking unit has elasticity and can be deformed under the action of external force, and the locking unit automatically rebounds when the external force disappears. 6. The protective cover of claim 5, wherein the protective cover cooperates with the spigot connector to realize one-step installation and locking, and the spigot connector is provided with at least one locking protrusion, the The locking protrusion pushes the locking unit radially upward and then falls into the groove (6), and then the locking unit rebounds to clamp the locking protrusion in the groove to realize locking; when unlocking, the protective cap and the lock The locking unit cooperates to lift the locking unit radially upwards, releasing the space required for the locking protrusion to escape from the groove, so that the locking protrusion escapes from the groove, thereby realizing the unlocking of the protective cap and the spigot connector. 7. The protective cover according to claim 5 or 6, wherein the protective cap is provided with an opening hook or a pressing block, the opening hook or the pressing block has a first slope, and the locking unit has a second slope; When the protective cover is unlocked from the spigot connector, pull the protective cap to make it move axially along the inner shell, and open the first slope on the hook or pressing block to cooperate with the second slope on the lock unit to make the lock unit diameter. Lift up to convert the axial action of the protective cap into the radial action of the locking unit, thereby releasing the space required for the locking protrusion to escape the groove, and unlocking the protective cap and the spigot connector; , the locking unit rebounds, and the first slope and the second slope cooperate to convert the radial action of the locking unit into the axial action of the protective cap to realize the reset of the protective cap. 8 . The protective cover according to claim 7 , wherein a blocking structure is further provided on the inner casing to assist the locking protrusion to push the locking unit upward, and also to prevent the protective cover from locking the spigot connector. 9 . In the tight state, the locking protrusions come out of the grooves. 9. An unlocking tool, comprising an unlocking cap, characterized in that an opening hook or a pressing block is arranged in the unlocking cap; the unlocking cap is used as an independent unlocking tool for unlocking a connector or a protective cover, and the connector comprises For the insertion end and the insertion end, the insertion end and the protective cover are respectively provided with a ferrule shell and an inner shell, and at least one locking unit is arranged on the ferrule shell and the inner shell, and the lock The unit is elastic and can be deformed under the action of external force, and the locking unit will automatically rebound when the external force disappears; Or the inner shell slides axially; when unlocking, the opening hook or pressing block on the unlocking cap cooperates with the locking unit of the ferrule shell or the inner shell to lift the locking unit radially upward to realize the connector or protection Unlock the hood. 10. The unlocking tool according to claim 9, wherein the opening hook or the pressing block has a first slope, and the locking unit has a second slope; when unlocking, the opening hook or the pressing block has a first slope. An inclined surface cooperates with the second inclined surface on the locking unit, so that the locking unit is lifted radially upwards to realize the unlocking of the connector or the protective cover.

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