A trident-shaped anti-withdrawal plug

Abstract

The utility model relates to power connector technical field, concretely relates to a kind of pin-shaped anti-extraction plug.It includes female end, the female end is initiative insertion end, the female end includes shell, its inside has slide;zipper and lock piece, the zipper is slidably arranged in slide, the lock piece is adjacent ground jack setting, to expose in the side of ground jack is front, the zipper front end is engaged with lock piece.The utility model is by being set in the position corresponding with the thumb or forefinger when single hand pinches female end with button, to be able to realize single hand pinches female end and operates;Meanwhile, button is contacted with thumb or forefinger, and then comply with ergonomics design, to facilitate the finger force of button when single hand pinches.

Description

Technical Field

[0001] This utility model relates to the field of power connector technology, and more specifically, to a triangular anti-dislodgement plug. Background Technology

[0002] A power connector is an industry-standard component used for the safe transmission of electrical power. Its core structure consists of a male and a female terminal. The male terminal has protruding pins (leads) or conductive ends. The female terminal has recessed holes or conductive grooves to accommodate the male terminal's pins.

[0003] Several existing systems have been designed to reduce the ease with which the male end can be easily unplugged from the female end of an electrical device. Chinese Patent Publication No. CN104183980B discloses a socket structure for preventing plug detachment, which features a locking structure combining a locking block and a button, demonstrating reliable reliability. In this patent, the socket (female end) acts as a passive receiving end, while the plug (male end) is the active insertion end. This is a fairly conventional design; during use, one hand presses the button on the socket while the other hand unplugs the plug, making operation very convenient.

[0004] However, some devices use the female connector as the active plug, such as the power cords of electric bicycle chargers, computer towers, and rice cookers. However, the active plug is designed to be more suitable for one-handed operation. It is more cramped to operate with two hands because it is very difficult to press the button on the front of the female connector with one hand and then pull out the female connector with the other hand. Utility Model Content

[0005] The purpose of this utility model is to provide a triangular anti-dislodgement plug. By adjusting the position of the button so that it corresponds to the thumb or index finger, the thumb or index finger can contact the button when the female end is pinched with one hand, thus solving the problem of difficulty in one-handed operation when the female end is the active insertion end.

[0006] To achieve the above objectives, a triangular anti-dislodgement plug is provided, including a female terminal, which is an active insertion terminal, and the female terminal includes:

[0007] The casing has internal sliding tracks;

[0008] The zipper and the locking plate are provided. The zipper is slidably disposed in a slide rail. The locking plate is disposed adjacent to the grounding socket, with the side of the grounding socket exposed as the front. The front end of the zipper engages with the locking plate.

[0009] A button is located adjacent to the rear end of the zipper;

[0010] The housing includes a first surface and a second surface facing each other, the first surface being the surface closer to the grounding socket and the second surface being the surface away from the grounding socket;

[0011] The button is located on the second surface and is used to trigger the zipper to pull the locking plate, causing the locking plate to move from a first state to a second state. The first state is a self-locking state, and the second state is an unlocking state.

[0012] In one technical solution, a groove is provided on the second surface, and the groove is connected to a slide rail;

[0013] The zipper includes a sliding part, which is connected to a button via a groove;

[0014] The button is located outside the slide groove, and the sliding part is fixedly connected to the button;

[0015] The button is subjected to force from front to back, which drives the zipper to move synchronously.

[0016] In another technical solution, an elastic component is provided inside the slide rail, the elastic component is connected to a zipper, and the zipper is reset under the action of the elastic component; the button is slidably connected to the slide groove, and a wedge-shaped part is provided on the side of the button and the sliding part that are close to each other;

[0017] The elastic component ensures that the wedge-shaped portion of the button and the slider always fits together.

[0018] In another technical solution, a groove is provided on the second surface, and the button is slidably connected within the groove;

[0019] Wherein, the groove is an inclined groove;

[0020] The chute is connected to the slide rail;

[0021] It also includes a sliding part disposed in the slide groove, one end of which is fixedly connected to the button, and the other end of which is slidably connected to the zipper.

[0022] As a further improvement to this technical solution, the housing is designed for single-handed pinching, with the first surface in contact with the thumb and the button in contact with the index finger.

[0023] As a further improvement to this technical solution, the housing is designed for single-handed pinching, with the first surface in contact with the index finger and the button in contact with the thumb.

[0024] As a further improvement to this technical solution, the first state is that the locking plate is tilted, and the second state is that the locking plate is vertical.

[0025] As a further improvement to this technical solution, the housing includes an operating part, which is the rear half of the housing;

[0026] The first and second surfaces are the outer surfaces of the operating part;

[0027] The outer surface of the operating part is provided with anti-slip grooves.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] 1. In this triangular anti-detachment plug, the button is positioned to correspond to the position of the thumb or index finger when the female end is pinched with one hand, thus enabling operation by pinching the female end with one hand; at the same time, the button is in contact with the thumb or index finger, which conforms to the ergonomic design so that the fingers can exert force on the button when pinching with one hand.

[0030] 2. In this triangular anti-detachment plug, when pulling out the female end, apply force with your finger first to put the button in the unlocked state, and then pull it out. This avoids pulling out the female end before the locking plate is in the vertical position, which could damage the pins. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the female end structure of this utility model;

[0032] Figure 2 This is an exploded view of the female end structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the terminal block structure of this utility model;

[0034] Figure 4 This is a schematic diagram of the zipper and locking plate structure of this utility model;

[0035] Figure 5 This is a schematic diagram of the zipper and locking plate of this utility model in their first state;

[0036] Figure 6 This is a schematic diagram of the second state of the zipper and locking plate of this utility model;

[0037] Figure 7 This is a schematic diagram of the male and female ends of this utility model;

[0038] Figure 8 This is one of the schematic diagrams showing the use of the female end of this utility model;

[0039] Figure 9 This is the second schematic diagram of the female end of this utility model;

[0040] Figure 10 This is a schematic diagram of the button structure of this utility model that can slide in the vertical direction;

[0041] Figure 11Schematic diagram of the button structure that can slide along an inclined direction of the present utility model;

[0042] Figure 12 Schematic diagram of the inclined surface inclination angle of the wedge-shaped part and the inclined surface inclination angle of the chute of the present utility model.

[0043] The meanings of each label in the figure are as follows:

[0044] 1. Female terminal; 2. Housing; 3. Operating part; 4. Chute; 5. Through groove; 6. Zip fastener; 7. Lock piece; 8. Bottom shell; 9. Upper shell; 10. Slideway; 11. Baffle; 12. Pin hole; 13. Plug pin; 14. Lock hole; 15. Docking groove; 16. Connecting plate; 17. Connecting groove; 18. Retaining groove; 19. Connecting column; 20. Spring; 21. Sliding part; 22. Button; 23. Back plate. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0046] Figure 7 The structures of the male terminal and the female terminal are shown. When the female terminal is a passive receiving end, it usually refers to a socket. Then, affected by the installation position of the socket, the button is usually set on the front of the socket (the side where the jacks are exposed in the complete structure), which is also for convenient operation. However, when the female terminal is an active insertion end, the button set on the front will make it difficult to operate with one hand.

[0047] Therefore, a pin-shaped anti-disconnection plug is provided. Considering that when operating with one hand, the thumb and index finger are used to exert force to hold the female terminal, so as to achieve the plugging and unplugging with the male terminal. Based on this, the position of the button is adjusted so that it can correspond to the thumb or index finger, so that the button can be displaced to complete the unplugging action during the one-handed operation process.

[0048] The first embodiment Figure 1 The female terminal 1 of the pin-shaped anti-disconnection plug is shown. Refer to Figure 1 , with the side where the jacks are exposed being the front (front face), the front face of the female terminal 1 has three jacks, namely a ground jack, a live wire jack, and a neutral wire jack. The ground jack is located between the live wire jack and the neutral wire jack, and the three are distributed in a "pin" shape.

[0049] Figure 2 The exploded structure of the female terminal 1 is shown. Refer to Figure 2The female end 1 includes a housing 2, a zipper 6, and a terminal block. The terminal block is composed of a bottom housing 8 and an upper housing 9. The cavity inside the housing 2 is inserted into the terminal block. Specifically, the rear half of the housing 2 constitutes the operating part 3, while the front half of the housing 2 is used to insert with the male end. After insertion, the operating part 3 is exposed outside the male end for the thumb and forefinger to pinch. A sliding groove 4 is formed on the operating part 3, located in the middle of the operating part 3. The zipper 6 is provided corresponding to the sliding groove 4, and part of the structure of the zipper 6 is slidably connected to the sliding groove 4, thereby allowing the zipper 6 to slide in both forward and backward directions. In fact, the female end 1 can slide along... Figure 2 Disassembly is performed using the dotted lines. Similarly, during installation, the zipper 6 is positioned to correspond to the slide groove 4. Then, the housing 2 and the terminal block are inserted. The bottom rear side of the terminal block is provided with a back plate 23 corresponding to the slide groove 4. When the housing 2 and the terminal block are inserted, the back plate 23 fits into the slide groove 4, thereby blocking the zipper 6 and preventing it from falling off.

[0050] It should be noted that after the female end 1 is assembled, it will be coated with rubber to form a mold. Therefore, the housing 2 and the terminal block that are connected will not come loose. Moreover, a tight fit treatment will be performed before leaving the factory.

[0051] Figure 3 Terminal blocks are shown. Figure 4 The zipper 6 and locking plate 7 are shown; see [link / reference]. Figure 3 A pin 13 is provided on the solid part of the bottom shell 8, and a pin hole 12 is provided on the solid part of the upper shell 9 corresponding to the pin 13. The bottom shell 8 and the upper shell 9 are assembled by inserting the pin 13 and the pin hole 12 to form a terminal block. After assembly, three independent cavities are formed. See [reference needed]. Figure 2 and Figure 3 The three cavities correspond to the three sockets provided on the front of the housing 2. The grounding socket, live wire socket and neutral wire socket are respectively provided in the three cavities. Since the cavity that accommodates the grounding terminal is offset, a slide 10 is formed at the bottom of the terminal block. The zipper 6 is accommodated in the slide 10 and is slidably connected to it.

[0052] See Figure 2 and 4 The part where the zipper 6 and the slide groove 4 are slidably connected is the sliding part 21. The sliding part 21 is set perpendicular to the zipper 6. A connecting plate 16 is provided at the front end of the zipper 6. The top surface of the connecting plate 16 has a connecting groove 17. The female end 1 also includes a locking piece 7. The bottom of the locking piece 7 has a mating groove 15. The mating groove 15 engages with the connecting groove 17. In this way, when the zipper 6 slides back and forth, it can drive the locking piece 7 to rotate. The front of the locking piece 7 has a through-hole 14. The locking hole 14 and the grounding socket are located on the same axis, and the size of the locking hole 14 is adapted to the pins of the male end.

[0053] Among them, the slide 4 is connected to the slide 10.

[0054] See Figure 2 , Figure 3 and Figure 4 A baffle 11 is provided in the middle of the slide rail 10. A groove 18 is provided on the top surface of the zipper 6 along its length. A connecting post 19 is provided on the front side of the groove 18. A spring 20 is inserted into the connecting post 19. When the zipper 6 is housed in the slide rail 10, the baffle 11 extends into the groove 18 to further position the zipper 6. At the same time, the end of the spring 20 away from the connecting post 19 abuts against the baffle 11.

[0055] In addition, see Figure 2 and Figure 4 A button 22 is fixedly connected to the side of the sliding part 21 that is exposed outside the slide groove 4.

[0056] Figure 5 The first state of the zipper 6 and the locking plate 7 is shown. Figure 6 The second state of the zipper 6 and the locking plate 7 is shown; see [link / reference]. Figure 5 and Figure 6 The first state is the normal state of the zipper 6 and locking plate 7, i.e., the self-locking state. In this state, the locking plate 7 is tilted, and the female end 1 can be normally inserted into the male end. That is to say, after the grounding pin is inserted into the grounding socket, it can smoothly enter the locking hole 14 and connect with the grounding terminal. However, when trying to pull out the grounding pin, the friction generated by the tilted locking plate 7 contacting the grounding pin makes it difficult to pull out. Moreover, the more force is applied, the greater the friction, thus achieving the purpose of preventing disengagement. Finally, the zipper 6 is reset under the action of the spring 20.

[0057] When it is necessary to pull out the female terminal 1, simply push the zipper 6 backward using button 22. At this time, it enters the second state (unlocked state), the locking plate 7 is vertical, and the grounding pin can be smoothly disengaged from the lock hole 14, thus allowing the female terminal 1 to be pulled out smoothly.

[0058] For details, see Figure 5 In the first state, the connecting slot 17 is in the first position A, see [reference]. Figure 6 In the second state, the connecting groove 17 is in the second position B. The connecting groove 17 is moved from the first position A to the second position B by the displacement of the zipper 6. The distance D from the first position A to the second position B can make the locking piece 7 change from tilted to vertical.

[0059] Preferred, see Figure 2 and Figure 4 The front of the housing 2 is provided with a through groove 5 below the grounding socket. The through groove 5 and the connecting plate 16 are on the same axis. In the first state, the connecting plate 16 is housed in the through groove 5. Then, through the cooperation of the baffle 18 and the baffle 11, and the cooperation of the mating groove 15 and the connecting groove 17, the structure of the zipper 6 and the female end 1 becomes more compact.

[0060] Figure 8 This embodiment illustrates a use case; see [link / reference]. Figure 8 With the male and female terminals 1 in the plugged-in state and the grounding socket facing upwards, the thumb presses on the upper surface (first surface) of the operating part 3, and the index finger presses on the button 22 (the button 22 is located on the lower surface of the operating part 3, i.e., the second surface). This allows the button 22 to be positioned precisely where the index finger is pressed, conforming to ergonomic design. When it is necessary to remove the female terminal 1, there are two stages:

[0061] Push the button 22 backward with your index finger. Because of the ergonomic design, the support of the thumb provides a reaction force, aligning the direction of the index finger's force with the movement trajectory of the button 22, reducing force dispersion. Therefore, the index finger can easily push the button 22, thereby driving the zipper 6 to move backward, and then making the locking plate 7 vertical, thus completing the first stage.

[0062] Continue to push button 22. At this point, you can pull out female end 1. After pulling out female end 1, release button 22. Pull lock 6 will reset under the action of spring 20, and the second stage is completed.

[0063] The purpose of this is to avoid damaging the pins by pulling out the female terminal 1 before the locking piece 7 is in a vertical position.

[0064] Figure 9 Another use case of this embodiment is shown; see [link to example]. Figure 9 When the male and female terminals 1 are plugged in and the grounding socket is facing downwards, press the index finger on the upper surface of the operating part 3 and press the thumb on the button 22. By pinching the female terminal 1 normally with one hand, the button 22 can be positioned exactly where the thumb is pressing, which is in line with ergonomic design. When it is necessary to pull out the female terminal 1, there are also two stages, which will not be described in detail here.

[0065] Preferably, the button 22 in this embodiment has a wedge-shaped structure, with its inclined surface used to prevent the index finger from slipping off, and an anti-slip groove is also provided on the inclined surface to increase the friction with the index finger.

[0066] Preferably, the outer surface of the operating part 3 is also provided with anti-slip grooves to increase the friction with the thumb.

[0067] Preferred, see Figure 6 The two end faces of the operating part 3 form an active range EF. When the button 22 moves in the direction of arrow C, the rear end of the button 22 will not exceed the boundary F when it reaches the rear stop point. When the button 22 is reset, the front end of the button 22 will not exceed the boundary E when it reaches the front stop point. In other words, the button 22 can only move within the active range EF. The purpose of this is to ensure the compactness of the overall structure of the mother end 1.

[0068] In addition, spring 20 can also be made of other elastic components, including spring sheets and elastic rods.

[0069] Second embodiment, Figure 10 A button 22 that can slide vertically is shown; see [link / reference]. Figure 10 The zipper 6 can slide back and forth along the slide rail 10, and the part of the zipper 6 that is slidably connected to the slide groove 4 is the sliding part 21, which is set perpendicular to the zipper 6.

[0070] The inner wall of the slide groove 4 has a vertical groove, and the outer wall of the button 22 has a protrusion corresponding to the vertical groove. The protrusion is slidably connected to the vertical groove, allowing the button 22 to slide vertically up and down within the slide groove 4, and the protrusion cannot disengage from the vertical groove. Furthermore, a wedge-shaped portion is provided at the top of the button 22, and a corresponding wedge-shaped portion is provided at the bottom of the sliding portion 21. Under the action of the spring 20, the wedge-shaped portions of the button 22 and the sliding portion 21 are always in contact.

[0071] In use, apply upward pressure with your index finger to press button 22. With the help of the wedge-shaped part, the upward movement of button 22 is converted into the forward and backward movement of the zipper 6. This causes the zipper 6 to pull the locking plate 7 from an inclined position to a vertical position, thus unlocking the device. Finally, the zipper 6 and button 22 return to their original positions under the action of spring 20.

[0072] Preferably, the button 22 in this embodiment has a wedge-shaped structure, and its inclined surface is used to prevent the index finger from slipping out, which is more evident when the female end 1 is pulled out. In addition, an anti-slip groove is provided on the inclined surface to increase the friction with the index finger.

[0073] This embodiment also has two usage scenarios depending on the orientation of the grounding socket. Since these are disclosed in the first embodiment, they will not be repeated in this embodiment.

[0074] While the first embodiment transmits force efficiently and directly, its operation requires the index finger to make a backward displacement motion. When performing this pushing action, the index finger moves backward, and the force it applies (mainly backward) is opposite in direction to the supporting reaction force provided by the thumb (mainly forward), but their lines of action do not completely coincide. This can easily generate a small rotational torque or shear force on the plug. This may cause the operating part 3 in the pinched state to wobble or shift slightly in the hand, resulting in a relatively dispersed force application and making it difficult to pull out the female end 1.

[0075] The advantage of this embodiment is that during operation, the index finger only performs an up-and-down squeezing motion without significant forward or backward displacement. The upward force of the index finger and the downward pressure of the thumb (or vice versa, depending on the direction of button 22) are opposite in direction and their lines of action basically coincide at the same point or in a very close area (concentrated in the area of ​​button 22). This vertical squeezing action is similar to a purer "pinch" or "clamp" force, which can be applied more concentratedly to the operating part 3, significantly reducing the risk of the operating part 3 shaking or rotating in the hand during the removal of the female end 1, making the operator feel that the control of the operating part 3 is more stable, more focused, and more responsive.

[0076] Third embodiment, Figure 11 A button 22 that can slide along the tilt direction is shown; see [link / reference]. Figure 11 The zipper 6 can slide back and forth along the slide rail 10, and the part of the zipper 6 that is slidably connected to the slide groove 4 is the sliding part 21, which is set perpendicular to the zipper 6.

[0077] The slide 4 is an inclined groove, allowing the button 22 to slide obliquely within the slide 4 without disengaging from it. Furthermore, one end of the sliding part 21 is fixedly connected to the button 22, while the other end is slidably connected to the zipper 6.

[0078] In use, apply pressure with your index finger from bottom to top to press button 22. With the cooperation of sliding part 21, the movement of button 22 from bottom to top is transformed into the movement of zipper 6 from front to back. This causes zipper 6 to pull lock plate 7 from tilt to vertical, thus unlocking the device. Finally, zipper 6 and button 22 return to their original positions under the action of spring 20.

[0079] This embodiment also has two usage scenarios depending on the orientation of the grounding socket. Since this has been disclosed in the first embodiment, it will not be described again in this embodiment.

[0080] This embodiment features ergonomic optimization: the action of pressing button 22 from bottom to top with the index finger follows the natural bending direction of the finger joint (more physiologically compatible than horizontal pushing), resulting in more comfortable operation and more direct force application. Furthermore, the oblique groove structure decomposes the oblique pushing force of the index finger into two components:

[0081] The horizontal force directly drives the zipper 6 to move backward;

[0082] The vertical component of the force is converted into a gripping force on the operating part 3.

[0083] The oblique squeezing action is essentially a "clamping" behavior (the index finger pushes diagonally upwards, and the thumb presses down naturally to form a reaction force), which makes the point of force application and the point of grip more concentrated, avoiding the rotational torque that may be generated when pushing laterally, and ensuring that the operating part 3 is not easy to shake in the hand.

[0084] Finally, the inclination angles of the inclined surfaces (the inclined surfaces of the wedge-shaped portion and the inclined surfaces of the groove 4) in the second and third embodiments are defined, see [link to relevant documentation]. Figure 12 ,in:

[0085] ∠1=∠2=arctan(H / D)×(180 / π);

[0086] In the formula, ∠1 is the inclination angle of the wedge-shaped part; ∠2 is the inclination angle of the slide 4; arctan is the arctangent function, and the calculation result is in radians; D is the distance from the first position A to the second position B; H is the maximum displacement depth of the button 22 in the slide 4.

[0087] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A triangular anti-dislodgement plug, comprising a female end (1), wherein the female end (1) is an active insertion end, and the female end (1) comprises: The housing (2) has a slide (10) inside; A zipper (6) and a locking plate (7) are provided. The zipper (6) is slidably disposed in a slide rail (10). The locking plate (7) is disposed adjacent to a grounding socket with the side of the grounding socket exposed as the front. The front end of the zipper (6) engages with the locking plate (7). Button (22), characterized in that the button (22) is disposed adjacent to the rear end of the zipper (6); The housing (2) includes a first surface and a second surface facing each other, the first surface being the surface closer to the grounding socket and the second surface being the surface away from the grounding socket; The button (22) is disposed on the second surface and is used to trigger the zipper (6) to pull the locking piece (7), so that the locking piece (7) changes from a first state to a second state. The first state is a self-locking state and the second state is an unlocking state.

2. The triangular anti-detachment plug according to claim 1, characterized in that, The housing (2) is for single-handed pinching, with the first surface in contact with the thumb and the button in contact with the index finger.

3. The triangular anti-detachment plug according to claim 1, characterized in that, The housing (2) is for single-handed pinching, with the first surface in contact with the index finger and the button in contact with the thumb.

4. The triangular anti-detachment plug according to claim 1, characterized in that, The first state is that the locking piece (7) is tilted, and the second state is that the locking piece (7) is vertical.

5. The triangular anti-detachment plug according to any one of claims 1-4, characterized in that, A groove (4) is provided on the second surface, and the groove (4) is connected to the slide rail (10); The zipper (6) includes a sliding part (21), which is connected to the button (22) via a groove (4).

6. The triangular anti-detachment plug according to claim 5, characterized in that, The button (22) is located outside the slide groove (4), and the sliding part (21) is fixedly connected to the button (22); The button (22) is subjected to force and moves from front to back, which drives the zipper (6) to move synchronously.

7. The triangular anti-detachment plug according to claim 5, characterized in that, An elastic component is provided inside the slide (10), and the elastic component is connected to the zipper (6). The zipper (6) is reset under the action of the elastic component.

8. The triangular anti-detachment plug according to claim 7, characterized in that, The button (22) is slidably connected to the slide (4), and a wedge-shaped part is provided on the side of the button (22) and the slide (21) that are close to each other; The elastic component ensures that the button (22) and the wedge-shaped portion of the sliding part (21) are always in contact.

9. The triangular anti-detachment plug according to any one of claims 1-4, characterized in that, A groove (4) is provided on the second surface, and the button (22) is slidably connected in the groove (4); Wherein, the groove (4) is an inclined groove; The chute (4) is connected to the slide rail (10); It also includes a sliding part (21) disposed in the slide groove (4), one end of the sliding part (21) is fixedly connected to the button (22), and the other end of the sliding part (21) is slidably connected to the zipper (6).

10. The triangular anti-detachment plug according to claim 1, characterized in that, The housing (2) includes an operating part (3), which is the rear half of the housing (2); The first surface and the second surface are the outer surfaces of the operating part (3); The operating part (3) has an anti-slip groove on its outer surface.

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