A connector with a self-locking cover

Abstract

The utility model provides a kind of connector with self-locking plug cover, through the setting of plug cover, the closure of the opening of containing cavity can be realized, effectively block dust, moisture and other foreign matter intrusion containing cavity inside.Simultaneously, when connector is not used, after plug cover is inserted, first spring is compressed, second spring is stretched, limiting ball enters second annular clamping groove through first opening part and is limited to fixed to plug cover, to realize the automatic locking of plug cover.When connector is used, by sleeve and exerting external force to compress the second spring in cavity, so that limiting ball is separated from second annular clamping groove and enters first annular clamping groove to limit and fix outer sleeve, first spring stretches and ejects plug cover, to realize the locking of plug cover to be cancelled.Further more, when connector is used, the closure of the opening of containing cavity can be completed without complex locking step, simple operation, conducive to improving the efficiency of connector opening closure.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a connector with a self-locking plug. Background Technology

[0002] In modern electronic devices, communication systems, and power distribution networks, connectors serve as key interface components for achieving circuit connectivity, signal transmission, and energy supply. Their reliability directly affects the stable operation of the entire system.

[0003] refer to Figure 1 As shown, a conventional power connector includes a connector body with a receiving cavity, and a mounting plate externally disposed on the connector body. One end of the mounting plate is rotatably connected to a connector cover for covering the opening of the receiving cavity via a rotating shaft. A hook and a first locking hole are provided at one end of the connector cover. The mounting plate has a slot and a second locking hole that mate with the hook and the first locking hole. The engagement of the hook and the slot initially fixes the connector cover to the mounting plate, while the first and second locking holes allow for insertion and locking, further securing the connector cover to the mounting plate. This locking mechanism prevents the connector cover from accidentally opening due to external force and exposing the receiving cavity to the outside, thus providing dust and water protection for the terminals inside the receiving cavity.

[0004] However, the connector cover of this power connector needs to be connected to the mounting plate via a rotating shaft, requiring a reserved rotation radius to prevent interference with other components when the cover is opened and closed. Furthermore, closing the connector cover involves steps such as covering, engaging the latches and slots, and inserting the locking holes for secure locking. This makes the connector locking process cumbersome, and the design of each locking structure further complicates the connector cover's structure, increasing mold costs and reducing the efficiency of the connector cover locking process while increasing production costs.

[0005] Therefore, in order to reduce the space occupied by the connector cover of the power connector and speed up the locking efficiency of the connector cover, it is necessary to provide a connector with a self-locking cover. Utility Model Content

[0006] In view of the technical problems of the cumbersome locking process and large space occupation of some power connectors in the prior art, this utility model provides a connector with a self-locking plug cover.

[0007] A connector with a self-locking plug includes a cylindrical body, an outer sleeve, and a plug. The cylindrical body has an opening at one end and extends to the opposite end, forming a receiving cavity. The cylindrical body has several through holes communicating with the receiving cavity, arranged in a ring array along the center of the cylindrical body. The diameter of the first opening of the through hole inside the cylindrical body is smaller than the diameter of the second opening of the through hole outside the cylindrical body. Each through hole contains a limiting ball with a diameter larger than the diameter of the first opening. A cylindrical outer terminal is provided within the receiving cavity, and an inner terminal is provided within the outer terminal, forming a plug-in cavity between the outer terminal and the receiving cavity. A first spring and an annular seat are sleeved on the outer side of the outer terminal. One end of the first spring abuts against the bottom of the plug-in cavity, and the other end is connected to the bottom of the annular seat. The outer periphery of the annular seat is slidably connected to the cavity wall of the plug-in cavity. An annular boss protrudes outward from the outer periphery of the outer opening end of the cylindrical body, and an inward protrusion is formed on the inner side of one end of the outer sleeve. An annular flange is formed, and the outer sleeve is fitted onto the outside of the annular boss through its end away from the annular flange, forming a cavity between the cylindrical body and the outer sleeve. A second spring is provided in the cavity, and the two ends of the second spring abut against the bottom of the annular flange and the top of the annular boss, respectively. The side of the annular flange near the cylindrical body corresponds to the through hole, and the side of the annular flange near the cylindrical body has a first annular groove. The plug is used to insert and remove to open and close the opening of the receiving cavity. The plug is inserted into the insertion cavity and fitted onto the outside of the outer terminal. The outer side of the plug has a second annular groove. After the plug is inserted, the first spring is compressed and the second spring is extended. The limiting ball enters the second annular groove through the first opening to limit and fix the plug. After the plug is removed, the first spring extends and the second spring is compressed. One side of the limiting ball abuts against the annular seat through the first opening, and the other side enters the first annular groove to limit and fix the outer sleeve.

[0008] Furthermore, a first annular groove is provided on the outer periphery of the cylindrical body, and a first annular sealing ring is provided in the first annular groove. The first annular sealing ring is located on the side of the through hole away from the annular protrusion. When the plug is inserted, the outer sleeve moves along the direction close to the first elastic sealing ring until the inner side of the outer sleeve abuts against the outer side of the first annular sealing ring.

[0009] Furthermore, at least one limiting block is provided on the outer periphery of the cylindrical body, and the limiting block is located on the side of the through hole near the annular protrusion; the outer sleeve is provided with a slot corresponding to the limiting block at the end away from the annular flange; when the plug is pulled out, the outer sleeve moves along the direction close to the limiting block until the slot is engaged with the limiting block.

[0010] Furthermore, the outer side of the plug cover is provided with a second annular groove, and a second annular sealing ring is provided in the second annular groove. When the plug cover is inserted, the outer side of the second annular sealing ring abuts against the cavity wall of the plug-in cavity.

[0011] Furthermore, the plug includes a tubular body for sleeved on the outside of the outer terminal and a cover body disposed at one end of the tubular body; the second annular groove is disposed on the outer periphery of the tubular body.

[0012] Furthermore, the outer terminal is provided with a receiving cavity, the inner wall of the receiving cavity is provided with a hollow spring group, and the inner terminal is located at the center of the receiving cavity.

[0013] Furthermore, the other end of the cylindrical body is connected to a mounting component for mounting a connector.

[0014] Furthermore, a mounting plate is sleeved on the outer side of the connection end between the cylindrical body and the mounting component, and the mounting plate is provided with several mounting holes.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a connector with a self-locking plug cover. The plug cover effectively seals the opening of the receiving cavity, preventing dust, moisture, and other foreign objects from entering. When the connector is not in use, inserting the plug cover compresses the first spring and extends the second spring. The limiting ball enters the second annular groove through the first opening to limit and fix the plug cover, thus achieving automatic locking. When the connector is in use, applying external force to the outer sleeve compresses the second spring within the cavity, causing the limiting ball to disengage from the second annular groove and enter the first annular groove to limit and fix the outer sleeve. The first spring extends, pushing the plug cover out, thus releasing the lock. This allows the connector to close the receiving cavity opening without complex locking procedures, simplifying operation and improving the efficiency of connector opening closure. Attached Figure Description

[0016] Figure 1 A schematic diagram of the locking structure of a connector with a self-locking plug cover provided by this utility model; Figure 2 A schematic diagram of the structure of a connector with a self-locking plug after the plug is removed, as provided by this utility model; Figure 3 A schematic diagram of the plug structure provided by this utility model; Figure 4 A schematic diagram of the cylindrical body and mounting plate provided by this utility model; Figure 5 A schematic diagram of the outer sleeve provided by this utility model; Figure 6A cross-sectional schematic diagram of the locking state structure of a connector with a self-locking plug cover provided by this utility model; Figure 7 This utility model provides a cross-sectional view of the connector with a self-locking plug cover in the plug cover locking and unlocking state, and in the plug cover pulled out state.

[0017] Attached Figure Labels 1. Cylindrical body; 101. Through hole; 102. Annular boss; 103. First annular groove; 104. First annular sealing ring; 105. Limiting block; 2. Outer sleeve; 201. Annular flange; 202. First annular groove; 203. Groove; 3. Insert cover; 301. Second annular groove; 302. Tubular body; 303. Cover; 304. Second annular groove; 305. Second annular sealing ring; 4. Limiting ball; 5. Outer terminal; 6. Inner terminal; 7. Accommodating cavity; 701. Spring assembly; 8. Insertion cavity; 9. First spring; 10. Annular seat; 11. Cavity; 12. Second spring; 13. Mounting component; 14. Mounting plate; 141. Mounting hole. Detailed Implementation

[0018] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] refer to Figure 1 As shown, a connector with a self-locking plug cover includes a cylindrical body 1, an outer sleeve 2, and a plug cover 3.

[0020] Specifically, refer to Figure 2 , Figure 4 and Figure 6 As shown, the cylindrical body 1 has an opening at one end and extends to the opposite end to form a receiving cavity; the cylindrical body 1 has a plurality of through holes 101 communicating with the receiving cavity, and the through holes 101 are arranged in a ring array along the center of the cylindrical body 1; and the diameter of the first opening of the through hole 101 located inside the cylindrical body 1 is smaller than the diameter of the second opening of the through hole 101 located outside the cylindrical body 1; each through hole 101 is provided with a limiting ball 4, and the diameter of the limiting ball 4 is larger than the diameter of the first opening.

[0021] Because the diameter of the first opening is smaller than the diameter of the second opening, and the diameter of the limiting ball 4 is larger than the diameter of the first opening, the through hole 101 is a hollow frustum-shaped cone. This allows the limiting ball 4 to partially protrude outside the first opening when it moves towards it, without falling out. In this embodiment, the diameter of the second opening is larger than the diameter of the limiting ball 4, facilitating the partial movement of the limiting ball 4 and its protrusion outside the second opening.

[0022] The accommodating cavity is provided with a cylindrical outer terminal 5, and an inner terminal 6 is provided inside the outer terminal 5. In this embodiment, the outer terminal 5 is provided with an accommodating cavity 7, and the inner sidewall of the accommodating cavity 7 is provided with a hollow spring assembly 701. The inner terminal 6 is located at the center of the accommodating cavity 7.

[0023] Among them, reference Figure 2 and Figure 5 , Figure 6 As shown, an insertion cavity 8 is formed between the outer terminal 5 and the receiving cavity; a first spring 9 and an annular seat 10 are sleeved on the outer side of the outer terminal 5. One end of the first spring 9 abuts against the bottom of the insertion cavity 8, and the other end is connected to the bottom of the annular seat 10, and the outer periphery of the annular seat 10 is slidably connected to the cavity wall of the insertion cavity 8. Thus, when the annular seat 10 is squeezed by an external force, the first spring 9 is compressed, causing the annular seat 10 to move downward; when the annular seat 10 loses the external force, the first spring 9 extends, causing the annular seat 10 to return to its original position.

[0024] The outer periphery of the cylindrical body 1 with an outer opening protrudes outward to form an annular boss 102. The inner side of the outer sleeve 2 with an inner opening protrudes inward to form an annular flange 201. The outer sleeve 2 is sleeved on the outer side of the annular boss 102 at one end away from the annular flange 201, so that a cavity 11 is formed between the cylindrical body 1 and the outer sleeve 2. A second spring 12 is provided in the cavity 11, and the two ends of the second spring 12 abut against the bottom of the annular flange 201 and the top of the annular boss 102, respectively. The side of the annular flange 201 near the cylindrical body 1 corresponds to the through hole 101, and the side of the annular flange 201 near the cylindrical body 1 is provided with a first annular groove 202.

[0025] In actual use, when the outer sleeve 2 moves closer to or further away from the annular boss 102, the second spring 12 is compressed or stretched accordingly, thereby causing the position of the annular flange 201 corresponding to the through hole 101 to change.

[0026] The plug cover 3 is used to open and close the opening of the receiving cavity by insertion and removal. The plug cover 3 is inserted into the insertion cavity 8 and sleeved on the outside of the outer terminal 5. A second annular groove 301 is provided on the outside of the plug cover 3. In this embodiment, the plug cover 3 is made of elastic material.

[0027] In this embodiment, reference Figure 3 and Figure 6 As shown, the plug cover 3 includes a tubular body 302 for sleeved on the outside of the outer terminal 5 and a cover 303 disposed at one end of the tubular body 302; the second annular groove 301 is disposed on the outer periphery of the tubular body 302. When the plug cover 3 is inserted into the insertion cavity 8, the tubular body 302 is sleeved on the outside of the outer terminal 5 until the opening end of the receiving cavity abuts against the bottom of the cover 303, sealing the opening of the receiving cavity.

[0028] refer to Figure 6 and Figure 7 As shown, after the plug cover 3 is inserted, the first spring 9 is compressed, the second spring 12 is extended, and the limiting ball 4 enters the second annular groove 301 through the first opening to limit and fix the plug cover 3, thereby realizing the self-locking of the plug cover 3.

[0029] After the plug 3 is pulled out, the first spring 9 extends and the second spring 12 is compressed. One side of the limiting ball 4 abuts against the annular seat 10 through the first opening, and the other side enters the first annular groove 202 to limit and fix the outer sleeve 2.

[0030] The outer periphery of the cylindrical body 1 is also provided with a first annular groove 103, and a first annular sealing ring 104 is provided in the first annular groove 103. The first annular sealing ring 104 is located on the side of the through hole 101 away from the annular protrusion 102. When the plug 3 is inserted, the outer sleeve 2 moves along the direction close to the first elastic sealing ring 104 until the inner side of the outer sleeve 2 abuts against the outer side of the first annular sealing ring 104, thereby limiting and fixing the position of the outer sleeve 2 and preventing the outer sleeve 2 from moving excessively.

[0031] At least one limiting block 105 is provided on the outer periphery of the cylindrical body 1. The limiting block 105 is located on the side of the through hole 101 near the annular boss 102. The outer sleeve 2 is provided with a slot 203 corresponding to the limiting block 105 at one end away from the annular flange 201. When the plug 3 is pulled out, the outer sleeve 2 moves along the direction close to the limiting block 105 until the slot 203 is engaged with the limiting block 105, thereby preventing the outer sleeve 2 from moving excessively.

[0032] The outer side of the plug 3 is also provided with a second annular groove 304, and a second annular sealing ring 305 is provided in the second annular groove 304. When the plug 3 is inserted, the outer side of the second annular sealing ring 305 abuts against the cavity wall of the insertion cavity 8, thereby isolating and sealing the receiving cavity from the external space, and playing a better role in waterproofing and dustproofing.

[0033] refer to Figure 6 and Figure 7 As shown, the working principle of the connector with a self-locking plug provided in this embodiment is as follows: (1) When the connector is not in use, the plug cover 3 is fully inserted into the plug cavity 8 and the opening of the receiving cavity is closed. At this time, the limiting ball 4 is partially exposed through the first opening of the corresponding through hole 101 and is located in the first annular groove 202 of the plug cover 3, which limits and locks the plug cover 3. The outer side of the second annular sealing ring 305 abuts against the cavity wall of the plug cavity 8. At the same time, the end of the outer sleeve 2 away from the limiting block 105 abuts against the outer side of the first annular sealing ring 104, and the inner side of the annular flange 201 corresponds to the second opening of the corresponding through hole 101, which squeezes and limits the limiting ball 4, preventing the limiting ball 4 from being exposed or only slightly exposed to the second opening.

[0034] (2) When the connector is in use, the plug cover 3 inserted into the plug cavity 8 needs to be pulled out. First, the user holds the outer sleeve 2 and applies external force, so that the outer sleeve 2 compresses the second spring 12 in the cavity 11 and moves along the direction close to the limiting block 105 until the slot 203 is engaged with the limiting block 105.

[0035] At this time, the first annular groove 103 on the inner side of the annular flange 201 is directly opposite the position of the through hole 101, so that the limiting ball 4 inside the through hole 101 loses the squeezing and limiting force of the inner wall of the annular flange 201 and the limiting and fixing force of the first annular groove 202 is weakened, which is not enough to keep the first spring 9 in a compressed state. Therefore, the first spring 9 extends and drives the plug cover 3 to release the limitation of the limiting ball 4 and the second annular sealing ring 305, and drives the plug cover 3 to pop up, so that the locking of the plug cover 3 fails and can be easily pulled out.

[0036] Secondly, as the plug cap 3 pops upward until the first spring 9 is fully extended, the annular seat 10 slides back into position along the cavity wall of the plugging cavity 8 as the first spring 9 extends, so that the outer wall of the annular seat 10 corresponds to the through hole 101, and the portion of the limiting ball 4 exposed in the first opening is pushed outward to the outside of the second opening, so that when the outer sleeve 2 moves to the slot 203 and engages with the limiting block 105, the first annular groove 202 in the annular flange 201 corresponds exactly to the through hole 101, and the portion of the limiting ball 4 exposed in the second opening is pushed into the first annular groove 202, thus limiting and fixing the outer sleeve 2.

[0037] Finally, remove the locked cover 3 and begin using the connector.

[0038] (3) When the connector is finished, the plug cover 3 needs to be plugged into the plug cavity 8 to make the opening of the cavity waterproof and dustproof.

[0039] First, during the process of inserting the tubular body 302 of the plug cap 3 into the plug cavity 8, the bottom of the tubular body 302 gradually squeezes the annular seat 10, so that the annular seat 10 no longer corresponds to the outer wall and the through hole 101, and the end of the limiting ball 4 located at the first opening gradually changes from being in contact with the outer periphery of the annular seat 10 to being in contact with the outer periphery of the tubular body 302.

[0040] Next, the tubular body 302 continues to be inserted until the opening of the receiving cavity abuts against the bottom of the cover 303, at which point the insert cover 3 is fully inserted. At this time, the second annular groove 301 on the outside of the tubular body 302 corresponds to the through hole 101, releasing the pressure on the limiting ball 4. The limiting ball 4 moves back to its original position towards the first opening due to the pressure contact and is exposed inside the second annular groove 301, thus limiting and fixing the insert cover 3 to prevent it from popping out under the action of the first spring 9 after the external force disappears, completing the self-locking of the insert cover 3. At this time, because the limiting ball 4 moves back to its original position towards the first opening of the through hole 101, the part of the limiting ball 4 exposed outside the second opening is insufficient to keep the second spring 12 in a compressed state. Therefore, the second spring 12 extends and drives the outer sleeve 2 to release the restriction of the limiting ball 4, causing the outer sleeve 2 to move upward, so that the end of the outer sleeve 2 away from the limiting block 105 abuts against and fixes the outside of the first annular sealing ring 104.

[0041] The other end of the cylindrical body 1 is connected to a mounting component 13 for mounting a connector. In this embodiment, the mounting component 13 includes a mounting screw connected to the bottom of the outer terminal 5, and the mounting screw is fitted with several washers, serrated washers, and nuts. The mounting component 13 is prior art and will not be described in detail here.

[0042] An installation plate 14 is sleeved on the outer side of the connection end between the cylindrical body 1 and the mounting component 13, and the installation plate 14 is provided with a plurality of installation holes 141.

[0043] This utility model provides a connector with a self-locking plug cover. The plug cover 3 effectively seals the opening of the receiving cavity, preventing dust, moisture, and other foreign objects from entering. Simultaneously, the outer sleeve 2, limiting ball 4, first spring 9, second spring 12, second annular groove 301, and first annular groove 202 ensure that after the plug cover 3 is inserted, the first spring 9 compresses, the second spring 12 extends, and the limiting ball 4 enters the second annular groove 301 through the first opening to limit and fix the plug cover 3, thus achieving automatic locking of the plug cover 3. When the connector is in use, the outer sleeve 2 is compressed by applying external force to the second spring 12 in the cavity 11, causing the limiting ball 4 to disengage from the second annular groove 301 and enter the first annular groove 202 to limit and fix the outer sleeve 2. The first spring 9 extends and pushes out the plug cover 3, thereby releasing the locking of the plug cover 3. This allows the connector to close the opening of the receiving cavity without complicated locking steps, making the operation simple and improving the efficiency of connector opening closure.

[0044] Compared to existing technologies, there is no need to set up an installation plate to cooperate with the cover to seal the receiving cavity. The opening and closing of the receiving cavity does not require a reserved space for the rotation radius of the cover to prevent interference from other components. This makes the connector structure simple and compact, occupies little space during use, and helps to reduce production costs.

[0045] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A connector with a self-locking plug, characterized in that, It includes a cylindrical body, an outer sleeve, and a cap, wherein the cylindrical body is open at one end and extends to the opposite end to be provided with a receiving cavity; The cylindrical body has several through holes communicating with the receiving cavity, and the through holes are arranged in a ring array along the center of the cylindrical body; the diameter of the first opening of the through hole located inside the cylindrical body is smaller than the diameter of the second opening of the through hole located outside the cylindrical body; each through hole is provided with a limiting ball, and the diameter of the limiting ball is larger than the diameter of the first opening. The cavity contains a cylindrical outer terminal and an inner terminal, and the outer terminal and the cavity form a plug-in cavity; a first spring and an annular seat are sleeved on the outer side of the outer terminal, one end of the first spring abuts against the bottom of the plug-in cavity and the other end is connected to the bottom of the annular seat, and the outer periphery of the annular seat is slidably connected to the cavity wall of the plug-in cavity. The outer periphery of the cylindrical body with its external opening protrudes outward to form an annular boss, and the inner side of the outer sleeve protrudes inward to form an annular flange. The outer sleeve is fitted onto the outer side of the annular boss at its end away from the annular flange, forming a cavity between the cylindrical body and the outer sleeve. A second spring is provided in the cavity, and the two ends of the second spring abut against the bottom of the annular flange and the top of the annular boss, respectively. The side of the annular flange near the cylindrical body corresponds to the through hole, and the side of the annular flange near the cylindrical body has a first annular groove. The plug is used to open and close the opening of the receiving cavity by insertion and removal. The plug is inserted into the insertion cavity and fitted onto the outer side of the outer terminal. The outer side of the plug has a second annular groove. After the plug is inserted, the first spring is compressed and the second spring is extended. The limiting ball enters the second annular groove through the first opening to limit and fix the plug. After the plug is pulled out, the first spring is extended and the second spring is compressed. One side of the limiting ball abuts against the annular seat through the first opening, and the other side enters the first annular groove to limit and fix the outer sleeve.

2. The connector with a self-locking plug cover according to claim 1, characterized in that, The outer periphery of the cylindrical body is also provided with a first annular groove, and a first annular sealing ring is provided in the first annular groove. The first annular sealing ring is located on the side of the through hole away from the annular protrusion. When the plug is inserted, the outer sleeve moves along the direction close to the first elastic sealing ring until the inner side of the outer sleeve abuts against the outer side of the first annular sealing ring.

3. A connector with a self-locking plug cover according to claim 1, characterized in that, At least one limiting block is provided on the outer periphery of the cylindrical body, and the limiting block is located on the side of the through hole near the annular protrusion; the outer sleeve is provided with a slot corresponding to the limiting block at the end away from the annular flange; when the plug is pulled out, the outer sleeve moves along the direction close to the limiting block until the slot is engaged with the limiting block.

4. A connector with a self-locking plug cover according to claim 1, characterized in that, The outer side of the plug is also provided with a second annular groove, and a second annular sealing ring is provided in the second annular groove. When the plug is inserted, the outer side of the second annular sealing ring abuts against the cavity wall of the plugging cavity.

5. A connector with a self-locking plug cover according to claim 1, characterized in that, The plug includes a tubular body for sleeved on the outside of the outer terminal and a cover body disposed at one end of the tubular body; the second annular groove is disposed on the outer periphery of the tubular body.

6. A connector with a self-locking plug cover according to claim 1, characterized in that, The outer terminal has a receiving cavity, the inner wall of which has a hollow spring assembly, and the inner terminal is located at the center of the receiving cavity.

7. A connector with a self-locking plug cover according to claim 1, characterized in that, The other end of the cylindrical body is connected to a mounting piece for mounting a connector.

8. A connector with a self-locking plug according to claim 1, characterized in that, A mounting plate is sleeved on the outer side of the connection end between the cylindrical body and the mounting component, and the mounting plate is provided with several mounting holes.

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