Anti-loosening and anti-falling plugboard

Abstract

The utility model discloses an anti-loosening and anti-falling plugboard, which comprises a main shell, a surface shell and a plugboard cavity, the surface of the surface shell is provided with an adaptive groove and a jack which are adaptive to a plug, and the circumferential annular wall of the adaptive groove is provided with a tongue hole. A clamping tongue, a pressing locking assembly and a first elastic piece are arranged in the insertion plate cavity, the clamping tongue and the lock hole of the plug are in insertion fit, and the pressing locking assembly and the first elastic piece jointly act on the clamping tongue, so that the clamping tongue is inserted into the lock hole or retreats from the lock hole. According to the utility model, through the synergistic effect of a plurality of assemblies, plugging adaptive locking is realized, low operating force and high anti-loosening reliability are realized, functions of mistaken touch prevention, dust prevention, water prevention and electric signal feedback are integrated, and the problem of contradiction between the anti-loosening performance and plugging convenience of a traditional plugboard is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of electrical appliances and electric vehicle parts technology, specifically to a plug plate that prevents loosening and falling off. Background Technology

[0002] In the field of electric vehicle technology, the reliability of the electrical connection system is directly related to the safety and operational stability of the entire vehicle. As the core interface for energy transmission, the reliability of the socket and plug connection is particularly critical. In high-voltage, high-current transmission scenarios, poor contact between the socket and plug can lead to micro-discharge phenomena, which accelerate the oxidation of the contact surface, creating a vicious cycle of increased contact resistance and abnormal temperature rise. Existing electric vehicles commonly experience the phenomenon of connectors becoming loose due to dynamic conditions such as driving vibration and mechanical shock. This phenomenon is particularly prominent in commercial vehicles and high-range models.

[0003] Existing anti-loosening structures for sockets and plugs often employ excessive clamping designs, resulting in a single insertion and removal force exceeding 80N (above the ergonomically recommended threshold of 50N), which is extremely unfriendly to female users and the elderly. In addition, there are mechanical locking mechanisms or threaded fastening mechanisms. While these designs can improve connection stability, they have significant drawbacks: locking mechanisms require additional steps, reducing insertion and removal efficiency and impacting user experience; threaded structures pose a risk of secondary loosening due to time-consuming tightening operations and thread wear.

[0004] Therefore, there is an urgent need to develop a new type of plug that prevents loosening and falling off, so as to maintain the stability of electrical connection under continuous vibration conditions during vehicle operation and meet the requirements of high frequency and low operating force for plugging and unplugging. Utility Model Content

[0005] To resolve the technical contradiction between the anti-loosening performance and the ease of insertion and removal of existing anti-loosening inserts, this utility model provides an anti-loosening and anti-fall-off insert.

[0006] The technical solution adopted by this utility model is as follows: a plug plate for preventing loosening and falling off, characterized in that it includes: a main shell; a face shell, which is installed integrally with the main shell to form a plug plate cavity, the surface of the face shell is provided with an adapter groove that matches the shape of the plug and a socket hole that matches the pins of the plug, and a tongue hole is provided on the circumferential wall of the adapter groove; a conductive clamp, which is disposed in the plug plate cavity and matches the pins of the plug; a latch, which is movably installed in the plug plate cavity and has a first position that extends out of the tongue hole and inserts into a locking hole on the circumferential wall of the plug, and a second position that exits from the locking hole; a pressing locking component and a first elastic element, which work together on the latch to switch the latch between the first position and the second position.

[0007] Preferably, the locking arm includes a lever structure, the middle part of which is hinged to the main shell or the face shell, the first end forming the latch, and the second end forming a wedge head that engages with the pressing locking assembly; the first elastic element acts on the locking arm to cause the latch to tend toward the second position.

[0008] Preferably, the pressing and locking assembly includes: a sliding pawl sleeve with indexing teeth, the upper end of which forms a guide slope; a pressing rod with guide grooves evenly distributed around its circumference, the lower end of which forms a slope sliding engagement with the guide slope; a guide rail sleeve with guide rails evenly distributed around its inner surface, the guide rails slidingly engaging with the indexing teeth and the guide grooves, the lower end of which forms a groove matching the guide slope; a driving member having a driving slope that forms a wedge transmission mechanism with the wedge head; and a second elastic member disposed between the sliding pawl sleeve and the driving member, causing the driving slope to tend to approach the wedge head.

[0009] Preferably, the pressing and locking assembly further includes a third elastic element disposed between the main housing and the driving member, so that the driving inclined surface tends to separate from the wedge head.

[0010] Preferably, the pressing locking assembly further includes a button, which is circumferentially fixed and axially slidable on the face shell, arranged above the pressing rod, and linked with the pressing rod under the action of external force or the second elastic element.

[0011] Preferably, the driving component has a symmetrical structure, with a driving inclined surface formed at each end. The locking arm and the first elastic component are also configured as two sets symmetrically arranged from left to right, and the two latches are synchronously inserted into the lock holes from both sides.

[0012] Preferably, the driving component is a metal component with two moving contacts, and the main housing is provided with a signal terminal block, which is provided with two stationary contacts. After the driving component descends, the moving contacts come into contact with the stationary contacts.

[0013] Preferably, it further includes a safety card and a fourth elastic element; the safety card is slidably installed in the main housing and has transition holes corresponding one-to-one with the sockets, and the transition hole corresponding to the ground pin has a plug-in inclined surface; the safety card has a third position where, when the plug is pulled out, it moves under the action of the fourth elastic element, causing the transition hole to be misaligned with the socket, and a fourth position where, when the plug is inserted, it moves under the action of the ground pin and the plug-in inclined surface, causing the transition hole to be aligned with the socket.

[0014] Preferably, one end of the security card forms a blocking portion; when the security card is in the third position, the blocking portion prevents the pressing and locking assembly from pressing down; when the security card is in the fourth position, the blocking portion separates from the pressing and locking assembly.

[0015] This utility model has the following beneficial effects:

[0016] 1. Low operating force and anti-loosening: By pressing the locking component and the elastic element, the latch of the plug plate and the locking hole of the plug can be quickly connected or separated, which solves the problem of excessive operating force or complicated operation process in traditional structures, and achieves dual optimization of adaptive locking and humanized operation under dynamic working conditions.

[0017] 2. Controlled height dimensions: The locking arms are located on both sides of the insertion plate cavity, allowing the latches to fix the plug from both sides. This improves reliability without increasing the height of the insertion plate cavity, making it suitable for use in compact spaces.

[0018] 3. Anti-accidental contact protection: The safety latch blocks the operation of the pressing and locking component when the plug is not fully inserted, ensuring that the latch retracts into the insert plate cavity in this state, avoiding the latch from blocking the plug insertion and preventing damage to the latch due to accidental operation;

[0019] 4. Dustproof and waterproof: When the plug is unplugged, the socket is sealed by a safety clip, which prevents dust and water from entering, thus improving safety;

[0020] 5. Intelligent electrical signal feedback: After the moving contact of the drive component makes contact with the stationary contact, the signal circuit is turned on, and the insertion status and insertion number are detected and recorded in real time to realize intelligent operation and maintenance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the plug and socket in an embodiment of this utility model.

[0022] Figure 2 This is a schematic diagram of the insert plate in an embodiment of this utility model (face shell omitted).

[0023] Figure 3 This is an exploded view of the insert plate in an embodiment of this utility model.

[0024] Figure 4 This is a cross-sectional view of the pressing and locking component in an embodiment of this utility model.

[0025] Figure 5 This is a schematic diagram of the locking arm in an embodiment of this utility model.

[0026] Figure 6 This is a schematic diagram of the security card and button in an embodiment of this utility model.

[0027] Plug A:

[0028] Main shell 1;

[0029] Faceplate 2, adapter slot 2.1, insertion hole 2.2, tongue hole 2.3;

[0030] Insertion plate cavity 3;

[0031] Conductive chuck 4;

[0032] First elastic element 5;

[0033] Locking arm 6, latch 6.1;

[0034] 7. Sliding claw sleeve, 7.1. Indexing tooth, 7.2. Guide slope;

[0035] Press rod 8, guide groove 8.1;

[0036] Guide rail sleeve 9, guide rail 9.1, slot 9.2;

[0037] Drive component 10, drive inclined surface 10.1, moving contact 10.2;

[0038] Second elastic element 11,

[0039] Third elastic element 12;

[0040] Button 13;

[0041] Signal terminal 14, stationary contact 14.1;

[0042] Safety card 15, transition hole 15.1, insertion bevel 15.2, blocking part 15.3;

[0043] Fourth elastic element 16.

[0044] Plug B:

[0045] Insert 17;

[0046] Keyhole 18. Detailed Implementation

[0047] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0048] In the embodiments, such as Figures 1-6The diagram shows an anti-loosening and anti-detachment plug A and its corresponding plug B. The plug A includes: a main shell 1; a face shell 2, integrally mounted with the main shell 1 to form a plug cavity 3, the surface of the face shell 2 having an adapter groove 2.1 matching the shape of the plug B and a socket hole 2.2 matching the pins 17 of the plug B; a tongue hole 2.3 on the circumferential wall of the adapter groove 2.1; a conductive clamp 4, disposed within the plug cavity 3 and matching the pins of the plug B; a latch 6.1, movably mounted within the plug cavity 3, having a first position extending from the tongue hole 2.3 and inserting into a locking hole 18 on the circumferential wall of the plug B, and a second position withdrawing from the locking hole 18; a pressing locking component and a first elastic element 5, acting together on the latch 6.1, causing the latch 6.1 to switch between the first and second positions. The design of the adapter groove 2.1 ensures precise alignment between the latch 6.1 and the locking hole 18, thereby preventing jamming during insertion and removal. This embodiment achieves automatic locking and releasing of the latch 6.1 in the locking hole 18 of the plug B through the synergistic action of the pressing locking component and the first elastic element 5. This not only ensures the anti-loosening performance of the plug B in a vibration environment, but also optimizes the operating force by using the pressing locking component and the first elastic element 5, thus solving the problem of excessive operating force in traditional mechanical locks.

[0049] In the embodiments, such as Figure 2 , Figure 5 As shown, the insert plate A has a lever-structured locking arm 6, the middle of which is hinged to the main shell 1 or the face shell 2. A latch 6.1 is formed at the first end, and a wedge 6.2 that engages with the pressing locking assembly is formed at the second end. A first elastic element 5 acts on the locking arm 6, causing the latch 6.1 to tend towards the second position. The lever-structured locking arm 6 converts the axial movement of the pressing locking assembly into the radial movement of the latch 6.1, thereby enabling operation of the pressing locking assembly from the direction of the face shell 2. The arrangement of the pressing locking assembly is more conspicuous and less prone to misoperation.

[0050] In the embodiments, such as Figure 3 , Figure 4 As shown, the pressing and locking assembly includes: a sliding pawl sleeve 7 with indexing teeth 7.1, the upper end of which forms a guide slope 7.2; a pressing rod 8 with guide grooves 8.1 evenly distributed around its circumference, the lower end of which forms a slope sliding fit with the guide slope 7.2; a guide rail sleeve 9 with guide rails 9.1 evenly distributed around its inner surface, the guide rails 9.1 slidingly fitting with the indexing teeth 7.1 and the guide grooves 8.1, the lower end of which forms a slot 9.2 that matches the guide slope 7.2; a driving member 10 with a driving slope 10.1 that forms a wedge transmission mechanism with the wedge head 6.2; and a second elastic member 11 disposed between the sliding pawl sleeve 7 and the driving member 10, causing the driving slope 10.1 to tend to approach the wedge head 6.2.

[0051] The operation steps of the press-lock component in this embodiment are as follows:

[0052] (1) When pressed, the pressing rod 8 moves downward along the axial direction. The guide groove 8.1 of the pressing rod 8 is evenly distributed around the circumference and forms a sliding fit with the guide rail 9.1 of the guide rail sleeve 9, guiding the pressing rod 8 to move along a fixed trajectory. At this time, the guide inclined surface 7.2 at the upper end of the indexing tooth 7.1 of the sliding pawl sleeve 7 contacts the lower end of the pressing rod, generating a radial component force, which forces the sliding pawl sleeve 7 to rotate around the circumference.

[0053] (2) When the pressing rod 8 moves to the end of the guide rail 9.1, the indexing tooth 7.1 enters the slot 9.2 of the guide rail sleeve 9 under the action of the rebound force of the second elastic element 11. At this time, the rotation angle of the sliding pawl sleeve 7 makes the indexing tooth 7.1 mesh with the slot 9.2, and the sliding pawl sleeve 7 is fixed in the low position, which in turn drives the second elastic element 11 and the driving element 10 to descend, thereby causing the driving inclined surface 10.1 to push the wedge head 6.2, causing the locking arm 6 to swing, and the latch 6.1 passes through the tongue hole 2.3 and is inserted into the locking hole 18 of the plug B.

[0054] (3) When pressed again, the pressing rod 8 moves downward along the guide rail, forcing the indexing tooth 7.1 of the sliding pawl sleeve 7 to disengage from the slot 9.2. The second elastic element 11 drives the pressing rod 8 to retract. At this time, the sliding pawl sleeve 7 disengages from the locked state during rotation.

[0055] (4) The indexing tooth 7.1 rotates with the sliding pawl sleeve 7, the pressing rod 8 retracts completely along the guide rail under the action of the second elastic element 11, the driving element 10 loses pressure, the locking arm 6 rebounds under the action of the first elastic element 5, and the latch 6.1 exits from the locking hole 18 of the plug B, realizing bidirectional state switching.

[0056] The pressing and locking assembly in this embodiment is reliable. The sliding engagement and rotation of the indexing teeth 7.1 and the guide sleeve 9 enable the positioning of the sliding claw sleeve 7 at two different heights, thereby ensuring reliable switching of the latch 6.1 between the first position and the second position.

[0057] In the embodiments, such as Figure 3 , Figure 4 As shown, the press-lock assembly also includes a third elastic element 12, disposed between the main housing 1 and the drive element 10, which causes the drive ramp 10.1 to tend to separate from the wedge head 6.2. The third elastic element 12 and the second elastic element 11 form a dual elastic system, balancing the reset force of the drive element 10 and the unlocking force of the locking arm 6, avoiding the drive element 10 from getting stuck during reset, and ensuring the smooth return of the latch 6.1. In addition, the dual elastic system also helps to improve the feedback feel of the press operation.

[0058] In the embodiments, such as Figure 3 , Figure 4As shown, the press-lock assembly also includes a button 13, which is circumferentially fixed and axially slidingly mounted on the faceplate 2, positioned above the press rod 8, and linked with the press rod 8 under the action of external force or the second elastic element 11. The button 13 uses a keyway or notch assembly structure to ensure that the pressing direction is always vertical, avoiding mechanism jamming caused by lateral forces, and optimizing the operating feel. The button 13 can also be equipped with a prominent label.

[0059] In the embodiments, such as Figure 2 , Figure 3 As shown, the drive component 10 has a symmetrical structure, with a drive ramp 10.1 formed at each end. The locking arm 6 and the first elastic element 5 are also arranged in two symmetrical sets. The two latches 6.1 are inserted into the synchronous locking holes 18 on both sides. The symmetrical arrangement of the double latches 6.1 not only improves the resistance of the plug B to lateral pull-out force, but also makes the plug B evenly stressed, eliminating the tilting problem caused by unilateral locking. Moreover, it does not increase the height of the plug cavity, making it suitable for use in compact spaces. The symmetrical structure of the drive component 10 also ensures the synchronization of the movement of the drive ramps 10.1 on both sides.

[0060] In the embodiments, such as Figure 2 , Figure 3 As shown, the drive component 10 is a metal part with two moving contacts 10.2. The main housing 1 contains signal terminals 14, each with two stationary contacts 14.1. When the drive component 10 descends, the moving contacts 10.2 contact the stationary contacts 14.1. In this embodiment, the contact between the moving contacts 10.2 and the stationary contacts 14.1 connects the two signal terminals 14, providing real-time feedback on the locking status of plug B. The metal material of the drive component 10 ensures conductivity while compensating for assembly tolerances through elastic deformation. The signal terminals 14 are connected to the main control system, enabling intelligent operation and maintenance based on the number of conduction signals and monitoring for poor contact.

[0061] In the embodiments, such as Figure 3 , Figure 6 As shown, it also includes a safety card 15 and a fourth elastic element 16. The safety card 15 is slidably installed inside the main housing 1 and has transition holes 15.1 corresponding to the socket 2.2. The transition holes 15.1 corresponding to the ground pin have insertion ramps 15.2. The safety card 15 has a third position where, when the plug B is pulled out, it moves under the action of the fourth elastic element 16, causing the transition holes 15.1 to be misaligned with the socket 2.2; and a fourth position where, when the plug B is inserted, it moves under the action of the ground pin and the insertion ramps 15.2, causing the transition holes 15.1 to be aligned with the socket 2.2. The misalignment between the transition holes 15.1 and the socket 2.2 of the safety card 15 ensures that the socket 2.2 is completely sealed when not inserted, providing good waterproof and dustproof protection. The insertion ramps 15.2 are designed to allow the longer ground pin to make priority contact, making the ground pin the source of sliding force for the safety card 15.

[0062] In the embodiments, such as Figure 3 , Figure 6 As shown, one end of the safety card 15 forms a blocking part 15.3. When the safety card 15 is in the third position, the blocking part 15.3 prevents the pressing locking assembly from pressing down. When the safety card 15 is in the fourth position, the blocking part 15.3 separates from the pressing locking assembly. In this embodiment, the blocking part 15.3 actually blocks the button 13 of the pressing locking assembly. When the plug B is fully inserted, the ground pin acts on the insertion slope 15.2, causing the safety card 15 to reach the fourth position. The blocking part 15.3 retracts from below the button 13, releasing the mechanical interference. Only then can the button 13 be pressed, causing the latch 6.1 to extend and insert into the locking hole 18 on the circumferential wall of the plug B. When plug B is pulled out, safety latch 15 pops out under the action of the fourth elastic element 16, reaching the third position. The blocking part 15.3 extends below button 13, forming mechanical interference and preventing button 13 from being operated. This ensures that latch 6.1 retracts into the insertion cavity 3 in this state, preventing latch 6.1 from obstructing the insertion process of plug B and preventing damage to latch 6.1 due to accidental operation. This linkage design strictly links the anti-accidental touch protection with the insertion state, and can 100% prevent accidental locking operation in the incomplete insertion state.

[0063] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A plugboard (A) that prevents loosening and falling, characterized in that, include: Main shell (1); The face shell (2) is installed as a whole with the main shell (1) to form a plug cavity (3). The surface of the face shell (2) is provided with an adapter groove (2.1) that matches the shape of the plug (B) and a plug hole (2.2) that matches the pin (17) of the plug (B). A tongue hole (2.3) is provided on the circumferential ring wall of the adapter groove (2.1). A conductive clamp (4) is disposed in the insert cavity (3) and matches the pins of the plug (B); The latch (6.1) is movably installed in the insert cavity (3) and has a first position extending out of the latch hole (2.3) and inserted into the locking hole (18) on the circumferential wall of the plug (B), and a second position withdrawing from the locking hole (18); The pressing locking component and the first elastic element (5) work together on the latch (6.1) to switch the latch (6.1) between the first position and the second position.

2. The anti-loosening and anti-falling plug-in board (A) according to claim 1, characterized in that, The locking arm (6) includes a lever structure, the middle part of which is hinged to the main shell (1) or the face shell (2), the first end forming the latch (6.1), and the second end forming the wedge (6.2) that cooperates with the pressing locking assembly; the first elastic element (5) acts on the locking arm (6) to make the latch (6.1) tend to the second position.

3. The anti-loosening and anti-falling plug-in board (A) according to claim 2, characterized in that, The press-lock assembly includes: The sliding pawl sleeve (7) has an indexing tooth (7.1), the upper end of which forms a guide slope (7.2). The pressing rod (8) has guide grooves (8.1) evenly distributed around its circumference, and its lower end forms a sliding fit with the guide inclined surface (7.2); The guide sleeve (9) has guide rails (9.1) evenly distributed around its inner surface. The guide rails (9.1) slide in cooperation with the indexing teeth (7.1) and the guide groove (8.1). The lower end of the guide rail (9.1) forms a groove (9.2) that matches the guide inclined surface (7.2). The drive member (10) has a drive ramp (10.1) that forms a wedge transmission mechanism with the wedge head (6.2). The second elastic element (11) is disposed between the sliding pawl sleeve (7) and the driving element (10), so that the driving inclined surface (10.1) tends to approach the wedge head (6.2).

4. The anti-loosening and anti-falling plug-in board (A) according to claim 3, characterized in that, The pressing and locking assembly also includes a third elastic element (12) disposed between the main shell (1) and the driving element (10), so that the driving inclined surface (10.1) tends to separate from the wedge (6.2).

5. The anti-loosening and anti-falling plug-in board (A) according to claim 3, characterized in that, The pressing and locking assembly also includes a button (13), which is circumferentially fixed and axially slidable on the face shell (2) and arranged above the pressing rod (8). It is linked with the pressing rod (8) under the action of external force or the second elastic element (11).

6. The anti-loosening and anti-falling plug-in board (A) according to claim 3, characterized in that, The driving component (10) has a symmetrical structure, with a driving inclined surface (10.1) formed at each end. The locking arm (6) and the first elastic component (5) are also set as two sets that are symmetrical from left to right. The two latches (6.1) are inserted into the lock holes (18) from both sides.

7. The anti-loosening and anti-falling plug-in board (A) according to claim 6, characterized in that, The driving component (10) is a metal part and has two moving contacts (10.2). The main housing (1) is provided with a signal terminal (14), and the signal terminal (14) is provided with two stationary contacts (14.1). After the driving component (10) descends, the moving contact (10.2) contacts the stationary contact (14.1).

8. The anti-loosening and anti-falling plug-in board (A) according to claim 1, characterized in that, It also includes a safety card (15) and a fourth elastic element (16); the safety card (15) is slidably installed in the main shell (1) and has a transition hole (15.1) corresponding to the insertion hole (2.2) one by one, and the transition hole (15.1) corresponding to the grounding pin has a plug-in inclined surface (15.2). The security card (15) has a third position in which, when the plug (B) is pulled out, it moves under the action of the fourth elastic member (16) to misalign the transition hole (15.1) with the socket (2.2), and a fourth position in which, when the plug (B) is inserted, it moves under the action of the ground pin and the insertion ramp (15.2) to align the transition hole (15.1) with the socket (2.2).

9. The anti-loosening and anti-falling plug-in board (A) according to claim 8, characterized in that, One end of the security card (15) forms a blocking part (15.3); when the security card (15) is in the third position, the blocking part (15.3) blocks the pressing locking component from pressing down; when the security card (15) is in the fourth position, the blocking part (15.3) separates from the pressing locking component.

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