AC / DC two-in-one plug and socket

Abstract

The utility model relates to the technical field of electrical apparatus elements, in particular to an alternating current and direct current two-in-one plug and socket, which comprises a wire tightening head, a rear jacket, an inner core, a front shell, a button and a locking buckle, the first end of the rear jacket is in threaded connection with the wire tightening head; the second end of the rear jacket is in threaded connection with the first end of the inner core; the inner core is sleeved with the front shell, and the front shell is rotationally connected with the inner core. A button is hinged to the front shell. The wall face of the front shell is in sliding connection with the locking buckle, and the locking buckle is connected with one end of the button. When the locking buckle is embedded into the socket, axial limiting and rotating limiting of the plug can be achieved, the connection stability of the plug and the socket is greatly improved, and the connection adaptability of the plug and the socket at different installation angles is improved. The front housing can drive the locking buckle to rotate synchronously, thereby improving the clamping flexibility of the locking buckle and the socket, reducing the influence of the installation error of the socket on the clamping precision, and further improving the connection strength and stability of the plug and the socket.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical components, and particularly relates to an AC-DC dual-purpose plug and socket. Background Art

[0002] An AC-DC dual-purpose plug is a plug integrating an AC plug connector and a DC plug connector, and the AC-DC dual-purpose socket is the same. Through the mutual cooperation of the AC-DC dual-purpose plug and socket, when an AC circuit fails, the DC circuit can be started for emergency treatment to maintain the normal operation of the electrical equipment.

[0003] Chinese Patent with publication number CN106450867B discloses a power plug and socket. The power plug includes a base body, at least two plug AC terminals are fixed in the base body, and two plug DC terminals are also fixed in the base body. Each plug AC terminal and each plug DC terminal are respectively connected with an independent connecting wire. The power socket includes a base, a base inner cavity is formed in the base, the shape of the base inner cavity is adapted to the shape of the insertion end of the base body, and socket AC terminals adapted to the plug AC terminals one by one and socket DC terminals adapted to the plug DC terminals one by one are arranged in the base inner cavity. This patent sets two plug DC terminals on the power plug, sets two socket DC terminals on the power socket, and uses the power plug and the socket in cooperation to ensure that the electrical equipment can still operate normally after the AC power is blocked. However, in this patent, the plug and the socket are directly plugged in, and the connection strength between the plug and the socket is relatively low, and the connection adaptability when the plug and the socket are vertically arranged is poor. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the above-mentioned disadvantages and deficiencies of the prior art, the utility model provides an AC-DC dual-purpose plug and socket, which solves the technical problem of relatively low connection strength between the AC-DC dual-purpose plug and socket.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the AC-DC dual-purpose plug of the utility model includes a tight wire head, a rear outer sleeve, an inner core, a front outer shell, a button and a locking buckle;

[0008] The first end of the rear outer sleeve is threadedly connected with the tight wire head; the second end of the rear outer sleeve is threadedly connected with the first end of the inner core;

[0009] The front outer shell is sleeved on the inner core, and the front outer shell is rotatably connected with the inner core;

[0010] The button is hinged to the front housing; the wall surface of the front housing is slidably connected to the locking buckle, and the locking buckle is connected to one end of the button.

[0011] Optionally, the inner core includes a housing, a first plug-in part, a first snap ring, a second snap ring, and a plug connector;

[0012] The first end of the housing is threadedly connected to the second end of the rear outer sleeve; the plug connector is provided at the second end of the housing;

[0013] Both the first snap ring and the second snap ring are sleeved on the housing; an installation channel is formed between the first snap ring and the second snap ring;

[0014] A first limit block is provided on the inner wall of the front housing; the first limit block is slidably connected to the installation channel.

[0015] Optionally, the plug also includes a spring;

[0016] A first partition and a first stop block are provided in the installation channel;

[0017] The spring is arranged in the installation channel; one end of the spring is connected to the first partition, and the other end is connected to the first limit block;

[0018] The first limit block can abut against the first stop block to limit the rotation of the front housing.

[0019] Optionally, a second stop block is provided on the inner core;

[0020] A second limit block is provided on the inner wall of the front housing;

[0021] The second limit block can abut against the second stop block to limit the rotation of the front housing.

[0022] Optionally, a second partition is provided in the installation channel;

[0023] The second limit block is slidably connected to the installation channel, and the second limit block can slide between the second partition and the second stop block.

[0024] Optionally, a first sealing ring and a second sealing ring are sleeved on the inner core;

[0025] The first sealing ring is clamped between the first snap ring and the rear outer sleeve;

[0026] The second sealing ring abuts against the second snap ring.

[0027] Optionally, the plug connector includes a DC plug connector and an AC plug connector;

[0028] The DC plug connector is arranged above the AC plug connector, and both are arranged in a cylindrical shape.

[0029] Optionally, a docking groove and a positioning hole are provided on the DC plug connector;

[0030] The docking groove is opened at the top end of the plug connector;

[0031] The positioning hole is opened on the surface of the DC plug connector facing away from the rear outer sleeve.

[0032] Optionally, the plug further includes a waterproof sleeve;

[0033] The first end of the rear outer sleeve is provided with tightening ratchets; the waterproof sleeve is sleeved on the tightening ratchets;

[0034] The waterproof sleeve is arranged inside the tightening wire head.

[0035] Furthermore, the present utility model further provides a socket, which is used in cooperation with the plug as described above, and includes a base, a second plug-in part, a socket cylinder and a plurality of pins;

[0036] The socket cylinder is arranged on the base;

[0037] One end of the second plug-in part is arranged inside the socket cylinder, and the other end penetrates through the base;

[0038] A plurality of the pins are arranged inside the socket cylinder;

[0039] A plurality of hooks are arranged on the outer wall of the socket cylinder; a locking buckle through groove is formed between adjacent hooks.

[0040] (III) Beneficial effects

[0041] The beneficial effects of the present utility model are:

[0042] A button is hinged on the front outer shell, and the button is connected to the locking buckle. Pressing the two ends of the button in sequence can correspondingly achieve the pressing down and pulling up of the locking buckle. The locking buckle can then be embedded in or disengaged from the socket, realizing the clamping or release of the clamping between the locking buckle and the socket. When the locking buckle is embedded in the socket, axial limiting and rotational limiting of the plug can be achieved, greatly improving the connection stability between the plug and the socket, and improving the connection adaptability between the plug and the socket at different installation angles.

[0043] The front outer shell is sleeved on the inner core, and the front outer shell is rotatably connected to the inner core, so that the front outer shell can drive the locking buckle to rotate synchronously, improving the flexibility of the clamping between the locking buckle and the socket, reducing the influence of the socket installation error on the clamping accuracy, and further improving the connection strength and connection stability between the plug and the socket. Description of the drawings

[0044] Figure 1 This is a schematic structural diagram of the front of the AC-DC dual-purpose plug and socket of the present utility model;

[0045] Figure 2 This is a schematic structural diagram of the back of the AC-DC dual-purpose plug and socket of the present utility model;

[0046] Figure 3 This is a schematic cross-sectional diagram of the AC-DC dual-purpose plug of the present utility model;

[0047] Figure 4 This is a schematic structural diagram of the front of the inner core of the present utility model;

[0048] Figure 5 This is a schematic structural diagram of the back of the inner core of the present utility model;

[0049] Figure 6 This is a connection schematic diagram of the front housing and the inner core of the present utility model;

[0050] Figure 7 This is a schematic structural diagram of the front housing of the present utility model;

[0051] Figure 8 This is an exploded view of the tight wire head and the rear outer sleeve of the present utility model;

[0052] Figure 9 This is a schematic structural diagram of the socket of the present utility model;

[0053] Figure 10 This is a schematic structural diagram of the bottom surface of the socket of the present utility model.

[0054]

Explanation of the reference numerals of the drawings

[0055] 1: Tight wire head;

[0056] 2: Rear outer sleeve; 21: Tightening ratchet teeth;

[0057] 3: Inner core; 31: Housing; 32: First plug-in part; 33: First snap ring; 34: Second snap ring; 35: Plug connector; 351: DC plug connector; 3511: Docking groove; 3512: Positioning hole; 352: AC plug connector; 36: Installation channel; 361: First partition; 362: First stop block; 363: Second partition; 37: Second stop block; 38: First sealing ring; 39: Second sealing ring;

[0058] 4: Front housing; 41: First limit block; 42: Second limit block;

[0059] 5: Button;

[0060] 6: Locking buckle; 61: Guide buckle;

[0061] 7: Spring;

[0062] 8: Waterproof sleeve;

[0063] 9: Base; 91: Second plug-in; 92: Socket; 921: Hook; 922: Locking through groove; 923: Docking block; 93: Pin. Detailed implementation manners

[0064] For better explaining the present utility model for easy understanding, the present utility model will be described in detail below with reference to the accompanying drawings through specific implementation manners.

[0065] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0066] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0067] In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; "connection" can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0068] See Figure 1 and Figure 2, the present utility model provides a plug that combines AC and DC. The plug includes a tight wire head 1, a rear outer sleeve 2, an inner core 3, a front outer shell 4, a button 5, and a locking buckle 6; the first end of the rear outer sleeve 2 is threadedly connected to the tight wire head 1; the second end of the rear outer sleeve 2 is threadedly connected to the first end of the inner core 3; the front outer shell 4 is sleeved on the inner core 3, and the front outer shell 4 is rotatably connected to the inner core 3; a button 5 is hinged on the front outer shell 4; the wall surface of the front outer shell 4 is slidably connected to the locking buckle 6, and the locking buckle 6 is connected to one end of the button 5. In this embodiment, one end of the tight wire head 1 is externally connected to a wire, and the inner core 3 is internally provided with AC terminals and DC terminals, and the AC terminals and DC terminals are correspondingly electrically connected to the externally connected wire to realize the conduction of the internal circuit of the plug.

[0069] A button 5 is hinged on the front outer shell 4, and the button 5 is connected to the locking buckle 6. Pressing the two ends of the button 5 in sequence can correspondingly realize the downward pressure and upward pull of the locking buckle 6, and the locking buckle 6 can then be embedded in or disengaged from the socket, realizing the clamping or release of the locking buckle 6 with the socket. When the locking buckle 6 is embedded in the socket, it can realize the axial limit and rotational limit of the plug, greatly improving the connection stability between the plug and the socket, and improving the connection adaptability of the plug and the socket at different installation angles.

[0070] The front outer shell 4 is sleeved on the inner core 3, and the front outer shell 4 is rotatably connected to the inner core 3, so that the front outer shell 4 can drive the locking buckle 6 to rotate synchronously, improving the flexibility of the clamping of the locking buckle 6 with the socket, reducing the influence of the socket installation error on the clamping accuracy, and further improving the connection strength and connection stability between the plug and the socket.

[0071] As Figures 3 to 7 shown, the inner core 3 includes a housing 31, a first plug-in 32, a first snap ring 33, a second snap ring 34, and a plug connector 35; the first end of the housing 31 is threadedly connected to the second end of the rear outer sleeve 2; the second end of the housing 31 is provided with a plug connector 35; both the first snap ring 33 and the second snap ring 34 are sleeved on the housing 31; an installation channel 36 is formed between the first snap ring 33 and the second snap ring 34; a first limiting block 41 is provided on the inner wall of the front outer shell 4; the first limiting block 41 is slidably connected to the installation channel 36. In this embodiment, the first snap ring 33, the second snap ring 34, and the housing 31 are integrally provided. The first plug-in 32 is an X-shaped part, and multiple wiring channels are formed between the X-shaped part and the inner wall of the housing 31. The AC terminals and DC terminals are arranged in the corresponding wiring channels and then correspondingly electrically connected to the externally connected wire. The first plug-in 32 can effectively partition the complex wires, play an anti-fooling role, facilitate the operator to wire, and subsequent maintenance operations. Secondly, the first limiting block 41 is clamped between the installation channel 36 and the inner wall of the front outer shell 4, thereby realizing the axial limit of the front outer shell 4 relative to the inner core 3, and at the same time not affecting the self-rotation of the front outer shell 4, that is, the first limiting block 41 has the functions of axial limit and guiding sliding, and the structure is simple and practical.

[0072] Furthermore, the plug further includes a spring 7; a first partition 361 and a first stopper 362 are provided in the installation channel 36; the spring 7 is arranged in the installation channel 36; one end of the spring 7 is connected to the first partition 361, and the other end is connected to the first limiting block 41; the first limiting block 41 can abut against the first stopper 362 to limit the rotation of the front housing 4. Specifically, the spring 7 is arranged in the space surrounded by the installation channel 36, the first limiting block 41, the first partition 361 and the inner wall of the front housing 4, and the inner core 3 can be regarded as a fixed part. Figure 6 The figure shows the in-situ state of the front housing 4. At this time, the first stopper 362 limits the first limiting block 41. Pressing the button 5 can snap the locking buckle 6 into the socket, realizing the reinforced connection between the inner core 3 and the socket, and further improving the connection strength between the two. When it is necessary to disconnect the connection between the inner core 3 and the socket, press the button 5 to disengage the locking buckle 6 from the socket, then rotate the front housing 4, and the first limiting block 41 compresses the spring 7 to ensure that the locking buckle 6 completely moves out of the socket buckle position. Pull the plug along the axial direction of the plug to complete the separation of the plug and the socket; after the operator releases the hand, the spring 7 resets the front housing 4 to the in-situ state, facilitating the quick docking of the plug and the socket next time. The rotation of the front housing ensures the flexibility of the docking between the locking buckle 6 and the socket, while the spring 7 enables the quick docking of the plug and the socket next time, improving the reliability of the plug.

[0073] Secondly, a second stopper 37 is provided on the inner core 3; a second limiting block 42 is provided on the inner wall of the front housing 4; the second limiting block 42 can abut against the second stopper 37 to limit the rotation of the front housing 4. Specifically, by providing the second stopper 37 and the second limiting block 42, the axial limiting strength of the inner core 3 on the front housing 4 is further enhanced, the stability during the rotation of the front housing 4 is enhanced, and the limiting strength of the rotation of the front housing 4 is enhanced, further improving the reliability of the plug.

[0074] In addition, a second partition 363 is provided in the installation channel 36; the second limiting block 42 is slidably connected to the installation channel 36, and the second limiting block 42 can slide between the second partition 363 and the second stopper 37. The sliding of the second limiting block 42 is limited by the second partition 363 and the second stopper 37, so as to limit the maximum rotation angle of the front housing 4, which can effectively prevent the spring 7 from exceeding its tensile or compression limit and extend the service life of the spring 7.

[0075] See again Figure 3, a first sealing ring 38 and a second sealing ring 39 are sleeved on the inner core 3; the first sealing ring 38 is clamped between the first snap ring 33 and the rear outer sleeve 2; the second sealing ring 39 abuts against the second snap ring 34. The first sealing ring 38 and the second sealing ring 39 can effectively play a role in protecting against water, dust, etc., and better protect the internal components and circuits of the plug. At the same time, the first sealing ring 38 and the second sealing ring 39 also act as buffer pads, which can effectively buffer the impact force when the plug is docked with the socket, better protect the equipment and reduce noise.

[0076] As Figure 5 shown, the plug connector 35 includes a DC plug connector 351 and an AC plug connector 352; the DC plug connector 351 is arranged above the AC plug connector 352, and both are arranged in a cylindrical shape. In this embodiment, an X-shaped groove is formed in the plug connector 35, and the X-shaped part is adaptively clamped with the X-shaped groove, which improves the accuracy during the docking of the socket and the plug and the connection stability after docking. Among them, the DC plug connector 351 is plugged into the DC socket on the socket to realize the conduction of the DC circuit; the AC plug connector 352 is plugged into the AC socket on the socket to realize the conduction of the AC circuit. The AC plug connector 352 includes an N-terminal plug connector, a PE-terminal plug connector, and an L-terminal plug connector. The cross-sections of the three are fan-shaped, and the three are arranged below the DC plug connector 351. The overall shape is cylindrical, with high integration and small volume, which can effectively improve the convenience of plugging the plug into the socket.

[0077] Furthermore, a docking groove 3511 and a positioning hole 3512 are formed in the DC plug connector 351; the docking groove 3511 is formed at the top of the plug connector 35; the positioning hole 3512 is formed on the surface of the DC plug connector 351 facing away from the rear outer sleeve 2. Specifically, the shape and size of the docking groove 3511 are adapted to the corresponding docking position of the socket, so as to limit the rotation direction of the plug connector 35 through the socket and play a guiding role during the plugging process of the socket and the plug. A positioning pin is correspondingly arranged on the socket, and the positioning pin is adaptively plugged into the positioning hole 3512, further improving the stability during the plugging process of the socket and the plug.

[0078] As Figure 8 shown, the plug further includes a waterproof sleeve 8; a tightening ratchet 21 is arranged at the first end of the rear outer sleeve 2; the waterproof sleeve 8 is sleeved on the tightening ratchet 21; the waterproof sleeve 8 is arranged inside the tightening wire head 1. Specifically, the tightening ratchet 21 is formed by a plurality of T-shaped ratchets surrounding the axis of the rear outer sleeve 2. The tightening ratchet 21 has a certain elastic deformation ability in the radial direction. Therefore, after the external wire is inserted into the tightening ratchet 21, the tightening ratchet 21 is clamped by the waterproof sleeve 8, and then the tightening ratchet 21 clamps the external wire, which is convenient for the operator to perform wiring operations later. At the same time, the waterproof sleeve 8 in this application can also play a role in protecting against water, dust, etc., and better protect the internal components and circuits of the equipment.

[0079] In addition, referring to Figure 9 and Figure 10 The present utility model also provides a socket for use in conjunction with the above plug, including a base 9, a second plug-in member 91, a socket cylinder 92, and multiple pins 93; the socket cylinder 92 is disposed on the base 9; one end of the second plug-in member 91 is disposed inside the socket cylinder 92, and the other end penetrates through the base 9. The second plug-in member 91 may be an X-shaped member, and the second plug-in member 91 is in communication with an external circuit; multiple pins 93 are disposed inside the socket cylinder 92; a plurality of hooks 921 are disposed on the outer wall of the socket cylinder 92; a locking buckle through groove 922 is formed between adjacent hooks 921. Specifically, the plug connector 35 can be inserted into the socket cylinder 92. A docking block 923 is disposed inside the socket cylinder 92, and the docking block 923 is inserted into the docking groove 3511. Through the combined action of the docking block 923, the positioning pins, the second plug-in member 91, the socket cylinder 92, and multiple pins 93, the stability during the plugging process of the plug and the socket is improved. Multiple pins 93 are correspondingly inserted into the internal terminals of the DC plug connector 351 and the AC plug connector 352 to achieve conduction of the internal circuits of the plug and the socket.

[0080] In this embodiment, referring to Figure 7 , a pair of buttons 5 are disposed on the inner wall of the front housing 4, and the pair of buttons 5 are connected to a pair of locking buckles 6 one by one; a pair of guiding buckles 61 are also fixedly disposed on the inner wall of the front housing 4. Taking Figure 9 the shown orientation as an example for illustration, both the locking buckle 6 and the guiding buckle 61 are triangular buckles and can slide along the locking buckle through groove 922 from above the socket cylinder 92 until the locking buckle 6 or the guiding buckle 61 is snapped into the hook 921 to achieve axial reinforcement and limitation of the plug. Among them, the guiding buckle 61 plays a guiding and reinforcing role; the locking buckle 6 is controlled to be enabled through the button 5 to improve the smoothness of the plugging of the plug and the socket. Compared with snapping four guiding buckles 61 into four hooks 921 at the same time, snapping only two guiding buckles 61 is smoother and more convenient because the guiding buckle 61 and the hook 921 are in interference fit. Reducing the number of snap connections of the guiding buckle 61 on the socket can correspondingly reduce the frictional resistance, and the rotational force required for unlocking the front housing 4 is smaller, making it more convenient and labor-saving to unlock. After the two guiding buckles 61 are snapped into the two hooks 921, then snapping the two locking buckles 6 into the two hooks 921 correspondingly can effectively avoid the situation of jamming during the plugging and unplugging processes of the plug and the socket, improving the reliability of the device.

[0081] It should be understood that the above description of the specific embodiments of the present utility model is only for explaining the technical route and features of the present utility model, and its purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly. However, the present utility model is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present utility model should be covered by the protection scope of the present utility model.

Claims

1. An AC / DC two-in-one plug, characterized in that: The plug comprises a tightening head (1), a rear outer cover (2), an inner core (3), a front outer cover (4), a button (5) and a locking buckle (6); The first end of the rear outer sleeve (2) is threadedly connected to the tightening head (1); the second end of the rear outer sleeve (2) is threadedly connected to the first end of the inner core (3); The front outer shell (4) is sleeved on the inner core (3), and the front outer shell (4) is rotatably connected to the inner core (3); The button (5) is hinged on the front shell (4); the wall surface of the front shell (4) is slidably connected to the locking buckle (6), and the locking buckle (6) is connected to one end of the button (5).

2. The AC / DC two-in-one plug according to claim 1, characterized in that: The inner core (3) comprises a shell (31), a first plug-in unit (32), a first snap ring (33), a second snap ring (34) and a plug connector (35); The first end of the shell (31) is threadedly connected to the second end of the rear outer sleeve (2); the second end of the shell (31) is provided with the plug connector (35); The first clamping ring (33) and the second clamping ring (34) are both sleeved on the housing (31); a mounting channel (36) is formed between the first clamping ring (33) and the second clamping ring (34); A first limiting block (41) is provided on the inner wall of the front housing (4); the first limiting block (41) is slidably connected to the installation channel (36).

3. The AC / DC two-in-one plug according to claim 2, characterized in that: The plug also includes a spring (7); A first partition (361) and a first stopper (362) are provided in the installation channel (36); The spring (7) is arranged in the installation channel (36); one end of the spring (7) is connected to the first partition (361), and the other end is connected to the first limit block (41); The first limiting block (41) can abut against the first stop block (362) to limit the rotation of the front housing (4).

4. The AC / DC two-in-one plug according to claim 3, characterized in that: A second stopper (37) is provided on the inner core (3); A second limiting block (42) is provided on the inner wall of the front shell (4); The second limiting block (42) can abut against the second stop block (37) to limit the rotation of the front housing (4).

5. The AC / DC two-in-one plug according to claim 4, characterized in that: A second partition (363) is provided in the installation channel (36); The second limiting block (42) is slidably connected to the installation channel (36), and the second limiting block (42) can slide between the second partition (363) and the second stop block (37).

6. The AC / DC two-in-one plug according to claim 2, characterized in that: The inner core (3) is sleeved with a first sealing ring (38) and a second sealing ring (39); The first sealing ring (38) is clamped between the first clamping ring (33) and the rear outer sleeve (2); The second sealing ring (39) abuts against the second clamping ring (34).

7. The AC / DC two-in-one plug according to claim 2, characterized in that: The plug connector (35) comprises a DC plug connector (351) and an AC plug connector (352); The DC plug connector (351) is arranged above the AC plug connector (352), and both are arranged in a cylindrical shape.

8. The AC / DC two-in-one plug according to claim 7, characterized in that: The DC plug connector (351) is provided with a docking groove (3511) and a positioning hole (3512); The docking groove (3511) is provided at the top end of the plug connector (35); The positioning hole (3512) is provided on a surface of the DC plug connector (351) facing away from the rear jacket (2).

9. The AC / DC two-in-one plug according to any one of claims 1 to 8, characterized in that: The plug also includes a waterproof cover (8); The first end of the rear outer cover (2) is provided with a tightening ratchet (21); the waterproof cover (8) is sleeved on the tightening ratchet (21); The waterproof cover (8) is arranged inside the tightening head (1).

10. A socket, characterized in that: Used in conjunction with the plug according to any one of claims 1 to 9, comprising a base (9), a second plug-in unit (91), a plug-in sleeve (92) and a plurality of plug pins (93); The insert (92) is arranged on the base (9); One end of the second plug-in unit (91) is disposed in the insert tube (92), and the other end thereof passes through the base (9); A plurality of the insertion pins (93) are arranged in the insertion tube (92); A plurality of hooks (921) are arranged on the outer wall of the inserting tube (92); locking buckle through grooves (922) are formed between adjacent hooks (921).

Images