Self-locking connector and connecting method thereof

Abstract

The invention relates to the technical field of connectors, and particularly provides a self-locking connector and a connecting method thereof.The self-locking connector comprises a first connecting sleeve and a second connecting sleeve, the first connecting sleeve and the second connecting sleeve are used for being connected with electric appliance parts, and the ends, close to each other, of the first connecting sleeve and the second connecting sleeve are provided with a female end and a male end; the female end and the male end are arranged in parallel, the first lock catch, the female terminal, the second lock catch and the male terminal are arranged at the ends close to each other, the second lock catch can slide in the radial direction of the male end, and the male terminal on the male end is fixedly connected to the second lock catch, so that when the female end and the male end are located, the male terminal and the female terminal are not in frictional contact, and the female end and the male end are not in frictional contact. Therefore, abrasion of the male terminal and the female terminal can be reduced, the conductivity of the male terminal and the female terminal is improved, the elastic piece on the second lock catch can rapidly drive the second lock catch to be locked with the first lock catch and drive the male terminal to be rapidly connected with the female terminal, the phenomenon that air is punctured by current generated between the male terminal and the female terminal is avoided, and safety accidents are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a self-locking connector and a connection method thereof. Background Art

[0002] A self-locking connector is an electrical connector with an automatic locking function. It uses an internal mechanism to ensure that the connector is firmly fixed when connected to prevent it from loosening due to vibration or external force. Self-locking connectors are widely used in various occasions that require stable electrical connections, such as automobiles, aerospace, and communication equipment.

[0003] For example, Chinese patent CN117394095A discloses a self-locking multifunctional electrical connector, which includes a protective shell and a connecting mechanism. The connecting mechanism includes a conductive rod, which is transversely fixed inside the protective shell. A protective mechanism is provided on one side of the protective shell. The protective shell is equipped with a sealing mechanism, a pressing mechanism, and a wiring mechanism. The ends of the protective shell and the socket are equipped with a wiring mechanism. The sealing mechanism on one side of the protective shell is inserted into the interior of the protective mechanism, so that the plug enters the socket for connection, and the conductive rod of the connecting mechanism is connected to the electrode rod of the protective mechanism, and the plug and the socket are locked by a self-locking mechanism. During the working process of the self-locking mechanism, the sealing mechanism expands and seals between the plug and the socket, so that the interior of the electrical connector is sealed.

[0004] However, the self-locking multifunctional electrical connector of the above scheme is prone to wear out the plating on the plug during connection, reducing the service life of the connector. At the same time, when the plug is inserted with power on, the proximity of the pin and the socket may cause the current to break through the air, causing a dangerous accident. Summary of the invention

[0005] Based on this, it is necessary to provide a self-locking connector and a connection method thereof to address the problem that the current connector easily wears out the plating on the plug during connection, thereby reducing the service life of the connector.

[0006] The above purpose is achieved through the following technical solutions: A self-locking connector, comprising: A first connecting sleeve and a second connecting sleeve, wherein the ends of the first connecting sleeve and the second connecting sleeve that are far from each other are respectively connected to electrical components, and the ends of the first connecting sleeve and the second connecting sleeve that are close to each other are respectively a female end and a male end, wherein the female end is provided with a female terminal, and the male end is provided with a male terminal, and when the female end and the male end are self-lockingly connected, the female terminal and the male terminal are electrically connected; A first lock buckle, the first lock buckle is arranged on the female end, there are at least two first lock buckles, and the two first lock buckles are symmetrically arranged on the female end; A second lock buckle, the second lock buckle is slidably disposed on the male end head, the male terminal is fixedly connected to the second lock buckle, the number of the second lock buckles is the same as the number of the first lock buckles, and the second lock buckle can drive the male terminal to slide along the radial direction of the male end head; An elastic member, the elastic member is located between the second lock buckle and the inner periphery of the second connecting sleeve, and the elastic member is configured as follows: When the female end of the first connecting sleeve and the male end of the second connecting sleeve approach each other, the first lock catch and the second lock catch are in sliding contact, and the elastic member accumulates force so that the second lock catch has a tendency to move radially inward along the male terminal. After the first lock catch moves to the preset position of the second lock catch, the elastic member is released, and the second lock catch is locked with the first lock catch and drives the male terminal to contact the female terminal.

[0007] Furthermore, one end of the elastic member is fixed inside the male end, and the other end of the elastic member is slidably connected to one end of the male end close to the female end, the middle position of the elastic member is connected to the second lock buckle, and a push rod is provided in the first connecting sleeve, and the push rod extends along the axial direction of the first connecting sleeve. In the process of the female end and the male end approaching each other, the push rod can push one end of the elastic member to make the elastic member deform and accumulate force, and when the elastic member is released, it can push the second lock buckle to slide radially inward along the male end.

[0008] Furthermore, the elastic member is an elastic sheet, and the elastic sheet is deformed when subjected to a force, and a middle position of the elastic sheet arches inwardly along the radial direction of the male end.

[0009] Furthermore, an adjustment component is provided in the first connecting sleeve, and the adjustment component can adjust the safety distance between the male terminal and the female terminal, the safety distance is positively correlated with the current between the male terminal and the female terminal, and the force storage degree of the elastic member is positively correlated with the safety distance between the male terminal and the female terminal.

[0010] Further, the adjustment assembly includes an adjustment sleeve, an adjustment rod and an adjustment cone head, the adjustment sleeve is threadedly connected to the outer periphery of the first connecting sleeve, the adjustment rod is slidably arranged in the first connecting sleeve, the adjustment cone head is fixedly connected to the adjustment rod, the axis of the adjustment cone head coincides with the axis of the first connecting sleeve, and the first lock buckle has a conical inclined surface on one end close to the axis of the first connecting sleeve, and the conical inclined surface is in sliding contact with the outer periphery of the adjustment cone head; When the adjusting sleeve rotates, it can move axially along the first connecting sleeve to drive the adjusting rod to move axially along the first connecting sleeve, and the adjusting rod drives the adjusting cone head to move.

[0011] Furthermore, the first lock buckle is slidably arranged on the female end, and the first lock buckle can slide radially along the female end, the push rod is fixedly connected to the adjusting rod, and the force storage degree of the elastic member is positively correlated with the distance that the push rod pushes one end of the elastic member to move.

[0012] Furthermore, the outer periphery of the first connecting sleeve is symmetrically provided with sliding grooves extending along its axial direction, the two ends of the adjusting rod are located in the sliding grooves and extend out of the sliding grooves, the inner periphery of the adjusting sleeve is provided with an annular groove, and the two ends of the adjusting rod are slidably connected in the annular grooves.

[0013] Furthermore, an auxiliary locking sleeve is provided on the outer periphery of the second connecting sleeve, and an internal thread is provided on the inner periphery of the auxiliary locking sleeve close to the first connecting sleeve, and an external thread is provided on the outer periphery of the first connecting sleeve close to the second connecting sleeve. After the first connecting sleeve and the second connecting sleeve are locked, the auxiliary locking sleeve is threadedly connected to the first connecting sleeve and the second connecting sleeve.

[0014] Furthermore, one end of the auxiliary locking sleeve away from the first connecting sleeve is clamped on the outer periphery of the second connecting sleeve.

[0015] The present invention also provides a connection method of a self-locking connector, which specifically comprises the following steps: S100, adjust the safety distance between the male terminal and the female terminal; S200, connecting the first connecting sleeve and the second connecting sleeve, and electrically connecting the female terminal in the first connecting sleeve and the male terminal in the second connecting sleeve; S300, rotating the auxiliary locking sleeve to lock the first connecting sleeve and the second connecting sleeve.

[0016] The beneficial effects of the present invention are: The present invention provides a first lock catch and a second lock catch on the female end and the male end, and the second lock catch can slide along the radial direction of the male end and fix the male terminal on the male end to the second lock catch, so that during the connection process of the female end and the male end, the male terminal and the female terminal do not have friction contact, thereby reducing the wear of the male terminal and the female terminal and improving the conductivity of the two. When the first lock catch and the second lock catch move to preset positions, the elastic part on the second lock catch is released to quickly drive the second lock catch to lock with the first lock catch, and drive the male terminal to quickly connect with the female terminal, thereby avoiding the phenomenon of current breakdown of the air between the male terminal and the female terminal, and avoiding safety accidents.

[0017] The present invention provides an adjustment component, which can adjust the safety distance between the male terminal and the female terminal, and can adjust the force storage degree of the elastic member. When the current passing between the male terminal and the female terminal is large, the adjustment component increases the safety distance between the male terminal and the female terminal, and at the same time increases the force storage degree of the elastic member, thereby avoiding the generation of an arc between the two. When the current between the two is small, the adjustment component reduces the safety distance between the two, and while ensuring that no arc is generated between the two, reduces the force storage degree of the elastic member as much as possible, thereby reducing the force when the two collide, and further reducing wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a self-locking connector provided by an embodiment of the present invention when separated; Figure 2 for Figure 1 A front view of a self-locking connector provided by an embodiment of the present invention when separated; Figure 3 for Figure 2 A cross-sectional view along AA of a self-locking connector provided by an embodiment of the present invention when separated; Figure 4 for Figure 2 A cross-sectional view along AA of a self-locking connector provided by an embodiment of the present invention in a self-locking state; Figure 5 for Figure 4 A partial enlarged view of the X portion of the self-locking connector provided by an embodiment of the present invention in the self-locking state; Figure 6 for Figure 4 A cross-sectional view along BB of a self-locking connector provided by an embodiment of the present invention in a self-locking state; Figure 7 A schematic structural diagram of a first connecting sleeve and a second connecting sleeve of a self-locking connector provided in one embodiment of the present invention; Figure 8 A schematic diagram of the structure inside the first connecting sleeve of a self-locking connector provided by an embodiment of the present invention.

[0019] in: 100, first connecting sleeve; 101, sliding groove; 102, external thread; 110, female end; 120, female terminal; 130, first locking buckle; 131, first wedge-shaped surface; 132, tapered inclined surface; 140, matching protrusion; 150, first fixing block; 151, through groove; 160, first sliding groove; 170, push rod; 200, second connecting sleeve; 210, male end; 220, male terminal; 230, second locking buckle; 231, second wedge-shaped surface; 240, matching groove; 250, second fixing block; 260, second sliding groove; 270, elastic member; 300, adjusting sleeve; 301, annular groove; 310, adjusting rod; 320, adjusting cone head; 330, auxiliary locking sleeve; 331, internal thread; 340, first retaining ring; 350, second retaining ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention 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 to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Refer to the following Figure 1-Figure 8 A self-locking connector provided by the present invention is described below.

[0024] A self-locking connector includes a first connection sleeve 100 and a second connection sleeve 200. The ends of the first connection sleeve 100 and the second connection sleeve 200 that are far from each other are respectively connected to electrical components, such as a controller or a sensor, and the ends of the first connection sleeve 100 and the second connection sleeve 200 that are close to each other are respectively a female end 110 and a male end 210. Figure 7As shown, a female terminal 120 is provided on the female terminal 110, and the female terminal 120 is electrically connected to the female terminal 110. A male terminal 220 is provided on the male terminal 210, and the male terminal 220 is electrically connected to the male terminal 210. When the female terminal 110 and the male terminal 210 are self-lockingly connected, the female terminal 120 and the male terminal 220 are electrically connected, that is, the female terminal 120 and the male terminal 220 are connected to each other so as to be able to transmit signals or currents. In order to enable the female end 110 and the male end 210 to be self-lockingly connected, a first lock buckle 130 is arranged on the female end 110, and there are at least two first lock buckles 130. The two first lock buckles 130 are symmetrically arranged on the female end 110, and the two first lock buckles 130 are distributed along the radial direction of the female end 110. A second lock buckle 230 is arranged on the male end 210, and the number of the second lock buckles 230 is the same as the number of the first lock buckles 130. The second lock buckles 230 are also symmetrically arranged on the male end 210, and the second lock buckles 230 are distributed along the radial direction of the male end 210.

[0025] When the first connecting sleeve 100 and the second connecting sleeve 200 in the prior art are connected to each other, the male terminal 220 and the female terminal 120 are in the same horizontal plane, and the male terminal 220 and the female terminal 120 are in sliding contact with each other. When the first locking buckle 130 and the second locking buckle 230 move to the preset position and then lock, the first connecting sleeve 100 and the second connecting sleeve 200 are locked with each other. At this time, the male terminal 220 and the female terminal 120 have been in sliding contact for a period of time, which will cause wear on the sliding contact part of the two, and the longer the sliding contact time, the higher the degree of wear. Generally, the surface of the female terminal 120 and the male terminal 220 are coated with conductive material. When the two are worn, the conductivity of the male terminal 220 and the female terminal 120 is reduced, and when the connection speed between the two is slow, current will break through the air. Phenomenon, which is prone to safety accidents. Therefore, in order to avoid friction between the male terminal 220 and the female terminal 120 and to avoid the phenomenon of electric current breaking through the air, the present invention slidingly sets the second lock buckle 230 on the male terminal 210, and fixes the male terminal 220 on the second lock buckle 230. The second lock buckle 230 can slide along the radial direction of the male terminal 210, thereby driving the male terminal 220 to slide along the radial direction of the male terminal 210, so that the two second lock buckles 230 can move away from or approach each other, thereby driving the male terminal 220 to move closer to or away from the female terminal 120, and further making the male terminal 220 and the female terminal 120 not slide in contact when the male terminal 210 and the female terminal 110 are close to each other, but the two quickly contact when reaching the preset position, thereby completing the connection between the male terminal 220 and the female terminal 120.

[0026] An elastic member 270 is provided between the second lock buckle 230 and the inner periphery of the second connecting sleeve 200. The elastic member 270 can push the second lock buckle 230. In the process of the female end 110 of the first connecting sleeve 100 and the male end 210 of the second connecting sleeve 200 approaching each other, the first lock buckle 130 gradually approaches the second lock buckle 230, and the two first lock buckles 130 approach the inside of the two second lock buckles 230, and the two slide in contact. At this time, the male terminal 220 and the female terminal 120 are not in contact, but have a safe distance, and the male terminal 220 and the female terminal 120 will not have the phenomenon of current breaking through the air when the safe distance is between them. In the process of the male end 210 and the female end 110 gradually approaching each other, the elastic member 270 gradually accumulates Force, when the first lock buckle 130 and the second lock buckle 230 move to the preset position, the elastic member 270 is released, and the elastic member 270 pushes the second lock buckle 230 to quickly lock with the first lock buckle 130, and at the same time, the second lock buckle 230 drives the male terminal 220 to quickly contact with the female terminal 120, thereby completing the connection between the male terminal 220 and the female terminal 120, and the two are only in contact for a moment, and there is no long-term friction contact, thereby reducing the wear of the conductive layer on the surface of the female terminal 120 and the male terminal 220, and the female terminal 120 and the male terminal 220 are quickly contacted under the action of the elastic member 270, and the time when the two are connected is extremely short, so as to avoid the generation of an arc between the female terminal 120 and the male terminal 220, and thus avoid the phenomenon of current breaking through the air.

[0027] It should be noted that, in this embodiment, the first lock buckle 130 is provided with a matching protrusion 140, and the second lock buckle 230 is provided with a matching groove 240. When the matching protrusion 140 moves to the position where the matching groove 240 is located, that is, when the first lock buckle 130 and the second lock buckle 230 move to the preset position, the elastic member 270 can be quickly released, so that the second lock buckle 230 moves inward along the radial direction of the male end 210 so that the matching groove 240 and the matching protrusion 140 cooperate with each other, thereby enabling the first lock buckle 130 and the second lock buckle 230 to self-lock. And the force accumulation process of the elastic member 270 in the present invention can be realized by other structures, for example, the force accumulation of the elastic member 270 is controlled by an electric control telescopic cylinder (not shown in the figure), and it can be set that when the first connecting sleeve 100 and the second connecting sleeve 200 are close to each other, the electric control telescopic cylinder gradually extends to compress the elastic member 270, so that the elastic member 270 starts to accumulate force. Of course, other structures can also be used to realize the force accumulation of the elastic member 270.

[0028] In the embodiment of the present invention, a push rod 170 is provided in the first connecting sleeve 100 to enable the elastic member 270 to store force, as follows: The elastic member 270 in the present invention is an elastic sheet. The elastic member 270 is arranged as a whole on the inner periphery of the second connecting sleeve 200, specifically on the inner periphery of the male end head 210. The elastic member 270 extends axially along the second connecting sleeve 200. One end of the elastic member 270 away from the first connecting sleeve 100 is fixed on the inner periphery of the second connecting sleeve 200, while the end of the elastic member 270 close to the first connecting sleeve 100 is slidably connected to the inner periphery of the second connecting sleeve 200 close to the first connecting sleeve 100, and one end of the slidably connected elastic member 270 can only slide axially along the second connecting sleeve 200. The middle position of the elastic member 270 is connected to the second locking buckle 230. A push rod 170 is arranged in the first connecting sleeve 100. The push rod 170 extends axially along the first connecting sleeve 100, and one end of the push rod 170 points to the elastic member 270 and is slidably connected to one end of the second connecting sleeve 200. The push rod 170 can move synchronously with the first connecting sleeve 100, so When the female ends 110 are close to each other, the push rod 170 can push one end of the sliding connection of the elastic member 270 so that the elastic member 270 is bent and deformed. In the initial state, when the push rod 170 does not push the elastic member 270, the elastic member 270 is in an approximately straight state, and the middle position is slightly arched toward the axis of the second connecting sleeve 200. After the push rod 170 pushes the elastic member 270 to deform, the middle position of the elastic member 270 arches radially inwardly of the second connecting sleeve 200. Since the second lock buckle 230 is in sliding contact with the first lock buckle 130, the elastic member 270 at this time cannot push the second lock buckle 230 to move but is constantly deforming and accumulating force. Only when the first lock buckle 130 moves to correspond to the mating protrusion 140 and the mating groove 240, the elastic member 270 releases the elastic force to push the second lock buckle 230 to drive the male terminal 220 to quickly contact the female terminal 120, thereby preventing an arc from being generated between the male terminal 220 and the female terminal 120.

[0029] In a further embodiment, an adjustment component is further provided in the first connecting sleeve 100, and the adjustment component can adjust the safety distance between the male terminal 220 and the female terminal 120, and adjust the force storage degree of the elastic member 270 according to the safety distance. The force storage degree of the elastic member 270 is positively correlated with the safety distance, that is, the longer the safety distance, the greater the force storage degree of the elastic member 270; and the closer the safety distance, the smaller the force storage degree of the elastic member 270.

[0030] It should be noted that the adjustment of the safety distance needs to be adjusted according to the internal current of the electrical components connected at the two ends of the first connecting sleeve 100 and the second connecting sleeve 200 that are far away from each other. Specifically, the larger the current, the longer the safety distance needs to be. At the same time, due to the increase in distance, the force storage degree of the elastic member 270 also needs to be increased, so that the elastic member 270 can push the second lock buckle 230 with greater force, thereby making the second lock buckle 230 drive the male terminal 220 to contact the female terminal 120 with a greater acceleration, thereby avoiding the phenomenon that the time required for the two to contact is too long and the current breaks through the air; and the smaller the current, the safe distance can be appropriately reduced, and due to the shorter distance, the force storage degree of the elastic member 270 can be reduced, thereby reducing the collision force when the male terminal 220 and the female terminal 120 contact.

[0031] In this embodiment, the first lock buckle 130 is configured to be able to slide along the radial direction of the female end 110, so as to facilitate the sliding connection of the first lock buckle 130 in the first connecting sleeve 100. Figure 3 As shown, a first fixing block 150 is fixedly arranged in the first connecting sleeve 100, and the first fixing block 150 is fixed as a whole to the inner circumference of the first connecting sleeve 100, and a first sliding groove 160 is opened on the first fixing block 150, and the first sliding groove 160 extends along the diameter direction of the first connecting sleeve 100, and one end of the first locking buckle 130 is slidably arranged in the first sliding groove 160, and the first locking buckle 130 can slide along the radial direction of the first connecting sleeve 100 in the first sliding groove 160, and the first locking buckle 130 will not detach from the first sliding groove 160. In this embodiment, the female terminal 120 is fixedly set on the first fixed block 150, and the position of the female terminal 120 will not change with the sliding of the first lock buckle 130. When the distance between the two first lock buckles 130 changes, the distance between the second lock buckles 230 will change with the change of the first lock buckle 130. In addition, since the male terminal 220 is fixedly connected to the second lock buckle 230, and the position of the female terminal 120 in the first connecting sleeve 100 does not change, when the distance between the two first lock buckles 130 increases, the distance between the two second lock buckles 230 will also increase, and at the same time, the distance between the male terminal 220 fixedly connected to the two second lock buckles 230 and the female terminal 120 will also increase; similarly, when the distance between the two first lock buckles 130 decreases, the distance between the male terminal 220 and the female terminal 120 will also decrease.

[0032] Specifically, in order to facilitate the sliding setting of the second locking buckle 230 in the second connecting sleeve 200, a second fixing block 250 is fixedly arranged on the tube of the second connecting sleeve 200, and the second fixing block 250 is provided with a second sliding groove 260 extending along the diameter direction of the second connecting sleeve 200. One end of the second locking buckle 230 is slidably set in the second sliding groove 260, and one end of the second locking buckle 230 will not be separated from the second sliding groove 260. The second locking buckle 230 can slide in the second sliding groove 260 along the radial direction of the second connecting sleeve 200.

[0033] Specifically, the adjustment assembly in this embodiment includes an adjustment sleeve 300, an adjustment rod 310 and an adjustment cone head 320. The adjustment sleeve 300 is threadedly connected to the outer periphery of the first connecting sleeve 100. When the adjustment sleeve 300 rotates around its own axis, it can move along the axial direction of the first connecting sleeve 100. The adjustment rod 310 is slidably arranged in the first connecting sleeve 100. The adjustment rod 310 can slide along the axial direction of the first connecting sleeve 100. The adjustment cone head 320 is fixedly arranged at the middle position of the adjustment rod 310. The axis of the adjustment cone head 320 is aligned with the axis of the first connecting sleeve 100. That is to say, the adjusting cone head 320 is located at the center of the first connecting sleeve 100, and the conical surface of the outer periphery of the adjusting cone head 320 is in contact with an end face of the first lock buckle 130 close to the axis of the first connecting sleeve 100, and the end face of the first lock buckle 130 close to the axis of the first connecting sleeve 100 is a conical inclined surface 132, and the conical inclined surface 132 is in sliding contact with the outer periphery of the adjusting cone head 320, and the conical inclined surface 132 of the first lock buckle 130 has magnetism that can absorb the iron adjusting cone head 320, so that the first lock buckle 130 will not separate from the adjusting cone head 320.

[0034] When the adjusting rod 310 moves along the axial direction of the first connecting sleeve 100, the adjusting cone head 320 is driven to move synchronously along the axial direction of the first connecting sleeve 100, so the adjusting cone head 320 can push the first lock buckle 130 to move away from or close to each other along the radial direction of the first connecting sleeve 100 through the conical inclined surface 132, and in this embodiment, the first lock buckle 130 is provided with a first wedge surface 131 on one end surface close to the second lock buckle 230, and the second lock buckle 230 is provided with a second wedge surface 231 on one end surface close to the first lock buckle 130, such as Figure 3 and Figure 5 As shown, by providing the first wedge surface 131 and the second wedge surface 231 , the two first lock buckles 130 can enter between the two second lock buckles 230 without getting stuck, and the first lock buckles 130 can be in sliding contact with the second lock buckles 230 .

[0035] More specifically, the push rod 170 is fixedly disposed on the adjustment rod 310 , and the degree of force storage of the elastic member 270 is positively correlated with the distance that the push rod 170 pushes one end of the elastic member 270 to move.

[0036] It is understandable that if Figure 3 As shown, if the adjusting sleeve 300 is rotated and the adjusting sleeve 300 drives the adjusting rod 310 to move rightward along the axial direction of the first connecting sleeve 100, the adjusting cone head 320 on the adjusting rod 310 pushes the two first locking buckles 130 to move radially outward along the first connecting sleeve 100. At this time, the distance between the two first locking buckles 130 increases, and the push rod 170 on the adjusting rod 310 moves rightward synchronously. The rightward movement of the push rod 170 can push the elastic member 270 slidingly arranged on the second connecting sleeve 200 to move a farther distance, so that the elastic member 270 is deformed to a greater extent, and the elastic member 270 has a greater degree of force storage, but Because the distance between the two first lock buckles 130 increases, the distance between the two second lock buckles 230 also increases. The male terminal 220 is fixedly connected to the second lock buckle 230, and the female terminal 120 is fixedly connected in the first connecting sleeve 100. The position of the female terminal 120 has not changed, so the distance between the male terminal 220 and the female terminal 120 increases. In other words, the distance that the second lock buckle 230 needs to move radially inward along the second connecting sleeve 200 increases. At the same time, the elastic member 270 has a greater degree of force storage at this time, and can still make the male terminal 220 quickly contact with the female terminal 120, thereby avoiding the generation of an electric arc.

[0037] It should be noted that if the current passing through the electrical components connected at one end of the first connecting sleeve 100 and the second connecting sleeve 200 that are far away from each other is large, in order to avoid arcing during the locking process of the first lock buckle 130 and the second lock buckle 230, it is necessary to adjust the component to increase the distance between the two first lock buckles 130, thereby increasing the distance between the two second lock buckles 230, and indirectly increasing the distance between the male terminal 220 and the female terminal 120, that is, increasing the safety distance between the male terminal 220 and the female terminal 120, and at the same time increasing the force storage degree of the elastic member 270, so that the male terminal 220 and the female terminal 120 can still be quickly contacted, thereby avoiding the phenomenon of current breakdown of the air due to large current; when the current is small, the distance between the two first lock buckles 130 can be reduced by adjusting the component, thereby indirectly reducing the distance between the male terminal 220 and the female terminal 120, so that the force storage degree of the elastic member 270 is reduced, thereby reducing the collision force when the male terminal 220 and the female terminal 120 contact each other, and thereby reducing the wear between the two when they collide.

[0038] Specifically, in order to facilitate the adjustment rod 310 to move along the axial direction of the first connecting sleeve 100, as shown in FIG. Figure 3As shown, the outer periphery of the first connecting sleeve 100 is symmetrically provided with sliding grooves 101 extending along its axial direction, and the two ends of the adjusting rod 310 are slidably located in the sliding grooves 101 and extend out of the two sliding grooves 101 at both ends, and an annular groove 301 is provided on the inner periphery of the adjusting sleeve 300, and the two ends of the adjusting rod 310 are finally located in the annular groove 301, so that when the adjusting sleeve 300 rotates and moves along the axial direction of the first connecting sleeve 100, the adjusting rod 310 can be driven to move along the axial direction of the first connecting sleeve 100 through the annular groove 301, and in order to prevent the first fixing block 150 from hindering the movement of the adjusting rod 310, a through groove 151 is provided on the first fixing block 150, and the adjusting rod 310 is simultaneously located in the through groove 151, thereby preventing the first fixing block 150 from hindering the movement of the adjusting rod 310.

[0039] In a further embodiment, in order to further improve the self-locking strength of the first connecting sleeve 100 and the second connecting sleeve 200, an auxiliary locking sleeve 330 is provided on the outer periphery of the second connecting sleeve 200. The auxiliary locking sleeve 330 is used to lock the first connecting sleeve 100 and the second connecting sleeve 200 again after the first connecting sleeve 100 and the second connecting sleeve 200 are locked to prevent the two from detaching.

[0040] Specifically, an outer thread 102 is provided on the outer circumference of one end of the first connecting sleeve 100 close to the second connecting sleeve 200, and an inner thread 331 is provided on the inner circumference of one end of the auxiliary locking sleeve 330 close to the first connecting sleeve 100, and a first clamping ring 340 is provided on the end of the auxiliary locking sleeve 330 away from the first connecting sleeve 100, and a second clamping ring 350 is provided on the outer circumference of the second connecting sleeve 200, and the diameter of the second clamping ring 350 is smaller than the diameter of the middle position of the auxiliary locking sleeve 330. In addition, the diameter of the second retaining ring 350 is greater than the diameter of the first retaining ring 340 so that one end of the auxiliary locking sleeve 330 can be clamped onto the outer periphery of the second connecting sleeve 200. When the first connecting sleeve 100 and the second connecting sleeve 200 are connected, the internal thread 331 of the auxiliary locking sleeve 330 is matched with the external thread 102 of the first connecting sleeve 100 and the auxiliary locking sleeve 330 is rotated to connect the auxiliary locking sleeve 330 to the outer periphery of the first connecting sleeve 100 and the second connecting sleeve 200.

[0041] The specific working process of a self-locking connector provided by the present invention is described in combination with the above embodiments: Adjust the safety distance between the male terminal 220 and the female terminal 120: like Figure 3As shown, the safety distance between the male terminal 220 and the female terminal 120 is adjusted according to the magnitude of the current. For example, when the current passing through is large, the adjusting sleeve 300 is driven to rotate so that the adjusting sleeve 300 moves a greater distance to the right along the axial direction of the first connecting sleeve 100, and the adjusting sleeve 300 drives the adjusting rod 310 to move to the right synchronously. The push rod 170 and the adjusting cone head 320 on the adjusting rod 310 both move to the right at the same time. The outer periphery of the adjusting cone head 320 pushes the two first lock buckles 130 to move radially outward along the first connecting sleeve 100, and the distance between the two first lock buckles 130 increases, thereby increasing the distance between the two second lock buckles 230. Since the male terminal 220 is fixedly connected to the second lock buckle 230, the safety distance between the male terminal 220 and the female terminal 120 increases. Similarly, if the current is small, the safety distance between the male terminal 220 and the female terminal 120 can be appropriately reduced.

[0042] connect: The first connecting sleeve 100 and the second connecting sleeve 200 are brought close to each other, the female end 110 in the first connecting sleeve 100 and the male end 210 in the second connecting sleeve 200 are brought close to each other, and one end of the two first lock buckles 130 close to the second lock buckle 230 contacts the second lock buckle 230, and the two are in sliding contact through the first wedge surface 131 and the second wedge surface 231. As the first connecting sleeve 100 and the second connecting sleeve 200 are brought close to each other, the push rod 170 gradually pushes one end of the elastic member 270 slidingly set on the second connecting sleeve 200, and the push rod 170 pushes the elastic member 270 to deform, and the middle position of the elastic member 270 arches inwardly along the radial direction of the second connecting sleeve 200 to start to accumulate force. As the distance between the two first lock buckles 130 increases, the second lock buckle 230 is closer to the second connecting sleeve 200. As the distance between the axes increases, as the first lock buckle 130 and the second lock buckle 230 approach each other, the stored force of the elastic member 270 increases. When the mating protrusion 140 on the first lock buckle 130 moves to the mating groove 240 of the second lock buckle 230, the elastic member 270 releases the elastic force, and the elastic member 270 drives the second lock buckle 230 to quickly self-lock with the first lock buckle 130, and the male terminal 220 on the second lock buckle 230 moves synchronously with the second lock buckle 230, and the second lock buckle 230 quickly contacts with the first lock buckle 130, thereby completing the electrical connection between the male terminal 220 and the female terminal 120, and during the electrical connection process, the male terminal 220 and the female terminal 120 do not have frictional contact, so that the degree of wear is relatively small, and the two are connected quickly during the electrical connection process, which can avoid the phenomenon of current breaking through the air.

[0043] Auxiliary locking: When the first connecting sleeve 100 and the second connecting sleeve 200 are self-locked, the auxiliary locking sleeve 330 is rotated, and the internal thread 331 of the auxiliary locking sleeve 330 and the external thread 102 of the first connecting sleeve 100 cooperate with each other, and the other end of the auxiliary locking sleeve 330 is clamped on the second connecting sleeve 200 through the first clamping ring 340 and the second clamping ring 350. When the auxiliary locking sleeve 330 and the first connecting sleeve 100 are fully threadedly connected, the first clamping ring 340 and the second clamping ring 350 are in close contact to auxiliary lock the first connecting sleeve 100 and the second connecting sleeve 200.

[0044] disconnect: When the first connecting sleeve 100 and the second connecting sleeve 200 need to be disconnected, the auxiliary locking sleeve 330 is first rotated in the opposite direction to separate the auxiliary locking sleeve 330 from the first connecting sleeve 100, and then the adjusting sleeve 300 is rotated in the opposite direction. Figure 4 and Figure 5 As shown, the adjusting sleeve 300 moves to the left along the axial direction of the first connecting sleeve 100, and the adjusting sleeve 300 simultaneously drives the adjusting rod 310 to move to the left, and the adjusting rod 310 drives the push rod 170 to move to the left. The end of the push rod 170 that contacts the elastic member 270 will move to the left when the elastic member 270 is reset, that is, the end of the elastic member 270 that is slidably connected to the second connecting sleeve 200 on the left side will move to the left, and because the middle position of the elastic member 270 is connected to the second locking buckle 230, when the elastic member 270 returns to a slightly straight state, the middle position of the elastic member 270 pulls the second locking buckle 230 along the second connecting sleeve 200 moves radially outward so that the two second lock buckles 230 move away from each other, and the two first lock buckles 130 move closer to each other under the action of the adjusting cone head 320 moving leftward and the conical inclined surface 132 of the first lock buckle 130 being able to adsorb the adjusting cone head 320, so that the matching grooves 240 of the two second lock buckles 230 gradually disengage from the matching protrusions 140 of the two first lock buckles 130, and the two gradually release the self-locking, and when the matching protrusions 140 of the first lock buckle 130 completely disengage from the matching grooves 240 of the second lock buckle 230, the first connecting sleeve 100 and the second connecting sleeve 200 can be separated, thereby completing the separation operation.

[0045] The present invention also provides a connection method of a self-locking connector, which specifically comprises the following steps: S100, adjusting the safety distance between the male terminal 220 and the female terminal 120; S200, connecting the first connection sleeve 100 and the second connection sleeve 200, and electrically connecting the female terminal 120 in the first connection sleeve 100 and the male terminal 220 in the second connection sleeve 200; S300 , rotating the auxiliary locking sleeve 330 to lock the first connecting sleeve 100 and the second connecting sleeve 200 .

[0046] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A self-locking connector, characterized in that: include: A first connecting sleeve and a second connecting sleeve, wherein the ends of the first connecting sleeve and the second connecting sleeve that are far from each other are respectively connected to electrical components, and the ends of the first connecting sleeve and the second connecting sleeve that are close to each other are respectively a female end and a male end, wherein the female end is provided with a female terminal, and the male end is provided with a male terminal, and when the female end and the male end are self-lockingly connected, the female terminal and the male terminal are electrically connected; A first lock buckle, the first lock buckle is arranged on the female end, there are at least two first lock buckles, and the two first lock buckles are symmetrically arranged on the female end; A second lock buckle, the second lock buckle is slidably disposed on the male end head, the male terminal is fixedly connected to the second lock buckle, the number of the second lock buckles is the same as the number of the first lock buckles, and the second lock buckle can drive the male terminal to slide along the radial direction of the male end head; An elastic member, the elastic member is located between the second lock buckle and the inner periphery of the second connecting sleeve, and the elastic member is configured as follows: When the female end of the first connecting sleeve and the male end of the second connecting sleeve approach each other, the first lock catch and the second lock catch are in sliding contact, and the elastic member accumulates force so that the second lock catch has a tendency to move radially inward along the male terminal. After the first lock catch moves to the preset position of the second lock catch, the elastic member is released, and the second lock catch is locked with the first lock catch and drives the male terminal to contact the female terminal.

2. The self-locking connector according to claim 1, characterized in that: One end of the elastic member is fixed inside the male end, and the other end of the elastic member is slidably connected to one end of the male end close to the female end. The middle position of the elastic member is connected to the second lock buckle. A push rod is provided in the first connecting sleeve, and the push rod extends along the axial direction of the first connecting sleeve. During the process of the female end and the male end approaching each other, the push rod can push one end of the elastic member to make the elastic member deform and accumulate force. When the elastic member is released, it can push the second lock buckle to slide radially inward along the male end.

3. The self-locking connector according to claim 2, characterized in that: The elastic member is an elastic sheet, which is deformed when subjected to an applied force, and a middle position of the elastic sheet arches inwardly along the radial direction of the male end.

4. The self-locking connector according to claim 2, characterized in that: An adjustment component is provided in the first connecting sleeve, and the adjustment component can adjust the safety distance between the male terminal and the female terminal. The safety distance is positively correlated with the current between the male terminal and the female terminal, and the force storage degree of the elastic member is positively correlated with the safety distance between the male terminal and the female terminal.

5. The self-locking connector according to claim 4, characterized in that: The adjusting assembly comprises an adjusting sleeve, an adjusting rod and an adjusting cone head, wherein the adjusting sleeve is threadedly connected to the outer periphery of the first connecting sleeve, the adjusting rod is slidably arranged in the first connecting sleeve, the adjusting cone head is fixedly connected to the adjusting rod, the axis of the adjusting cone head coincides with the axis of the first connecting sleeve, and the first locking buckle has a conical inclined surface on one end close to the axis of the first connecting sleeve, and the conical inclined surface is in sliding contact with the outer periphery of the adjusting cone head; When the adjusting sleeve rotates, it can move axially along the first connecting sleeve to drive the adjusting rod to move axially along the first connecting sleeve, and the adjusting rod drives the adjusting cone head to move.

6. The self-locking connector according to claim 5, characterized in that: The first lock buckle is slidably arranged on the female end, and the first lock buckle can slide radially along the female end, the push rod is fixedly connected to the adjusting rod, and the force storage degree of the elastic member is positively correlated with the distance that the push rod pushes one end of the elastic member to move.

7. The self-locking connector according to claim 5, characterized in that: The first connecting sleeve has symmetrically provided outer circumference with sliding grooves extending along its axial direction, the two ends of the adjusting rod are located in the sliding grooves and extend out of the sliding grooves, the adjusting sleeve has an annular groove on its inner circumference, and the two ends of the adjusting rod are slidably connected in the annular grooves.

8. The self-locking connector according to claim 1, characterized in that: An auxiliary locking sleeve is provided on the outer periphery of the second connecting sleeve, and an internal thread is provided on the inner periphery of the auxiliary locking sleeve close to the first connecting sleeve. An external thread is provided on the outer periphery of the first connecting sleeve close to the second connecting sleeve. After the first connecting sleeve and the second connecting sleeve are locked, the auxiliary locking sleeve is threadedly connected to the first connecting sleeve and the second connecting sleeve.

9. The self-locking connector according to claim 8, characterized in that: One end of the auxiliary locking sleeve away from the first connecting sleeve is clamped on the outer periphery of the second connecting sleeve.

10. A method for connecting a self-locking connector, applicable to the self-locking connector according to any one of claims 1 to 9, characterized in that: The specific steps include: S100, adjust the safety distance between the male terminal and the female terminal; S200, connecting the first connecting sleeve and the second connecting sleeve, and electrically connecting the female terminal in the first connecting sleeve and the male terminal in the second connecting sleeve; S300, rotating the auxiliary locking sleeve to lock the first connecting sleeve and the second connecting sleeve.

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