Multi-core plug capable of preventing core pins from bending

Abstract

The utility model relates to the technical field of new energy automobiles, in particular to a multi-core plug capable of preventing core pins from bending, which comprises a shell, a sliding plate is clamped at one end, close to a connecting plug, in the shell in a sliding manner, a plurality of pins are mounted on one side, close to the connecting plug, of the sliding plate, and the pins can extend into the connecting plug. A telescopic rod of which the end part is connected with the back surface of the sliding plate is inserted into one end, far away from the connecting plug, in the shell in a sliding manner; and a clamping piece for fixing the whole plug is mounted in the shell. According to the multi-core plug sliding plate capable of preventing the core pin from bending, the telescopic rod and the connecting plug can stretch out and draw back the contact pin after the plug is in butt joint, and the core pin is prevented from being bent in the inserting process.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a multi-core plug which can prevent core pins from bending. Background Art

[0002] Electric vehicles are vehicles that use an onboard power source as a power source, use motors to drive the wheels, and comply with various requirements of road traffic and safety regulations. As their impact on the environment is relatively small compared to traditional vehicles, their prospects are widely optimistic. With the popularity of electric vehicles, many new energy vehicles need to be charged every day, so charging plugs need to be used frequently.

[0003] The utility model patent with authorization announcement number CN211126260U discloses an electric vehicle charging plug, including a shell and a plug cover, a plug cover is installed at one end of the shell, a first colloid package located inside the shell is connected to the rear end of the plug cover, a plurality of pins inserted into the jacks of the plug cover are arranged on the first colloid package, a second colloid package connected to the rear side of the first colloid package is arranged, and a wire connected to the pin is arranged inside the second colloid package.

[0004] Although this technical solution has a simple structure, the overall rubber-coated molding has a better waterproof effect, and the pins will not be loose after being rubber-coated. The pins and plugs are rubber-coated for the first time, and then all are assembled and connected before the second rubber-coating, which saves time, effort and cost, ensures the firmness of the pin installation, and the assembly is time-saving and labor-saving, and has a good waterproof effect; However, under this technical solution, during the plug insertion process, there will be a certain tilt, which is easy to cause the pin to bend. In view of this, we propose a multi-core plug that prevents the core pin from bending. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a multi-core plug that prevents the core pins from bending.

[0006] In the first aspect, the present application provides a multi-core plug that prevents the core pins from bending, including a shell, a plug connector being provided at the head end of the shell, a sliding plate being slidably engaged at an end of the shell close to the plug connector, a plurality of pins being installed on the side of the sliding plate close to the plug connector, the pins being extendable into the plug connector, a telescopic rod having an end connected to the back side of the sliding plate being slidably engaged at an end of the shell away from the plug connector, a first spring being sleeved on the outer side of a portion of the telescopic rod inside the shell, a clamping part for fixing the entire plug being installed inside the shell, the clamping part comprising a straight plate hinged to the shell through a hinge column, one end of the straight plate extending above the plug connector and provided with a bent buckle; the shell is provided with a socket mounted on an external charging pile outside one end of the plug connector.

[0007] According to the technical solution provided in the embodiment of the present application, a handle is integrally formed at the bottom end of the shell side wall, and a sliding cavity adapted to the sliding plate is opened in the shell, and the internal depth of the sliding cavity is equal to the sum of the thickness of the sliding plate and the length of the pin.

[0008] According to the technical solution provided in the embodiment of the present application, a plurality of docking blocks are provided on the circumferential side wall of the plug connector, the plug connector is provided with a plurality of sockets whose number is equal to the number of the pins and whose positions correspond one to one, both ends of the sockets are through-connected, and the end of the sockets away from the sliding cavity is trumpet-shaped, and a plurality of docking joints whose number is equal to the number of the pins and whose positions correspond one to one are provided in the socket.

[0009] According to the technical solution provided in the embodiment of the present application, the telescopic rod includes a straight rod, a limiting ring for limiting a first spring is welded and fixed to the middle part of the outer wall of the straight rod, the end of the straight rod away from the sliding plate is hinged with a triangular protrusion through an adjustment cavity opened inside it, the triangular protrusion is in the shape of a right-angled triangle and one of its acute-angled ends is exposed through a through hole connected to the adjustment cavity, a third spring is provided between the bottom of the right-angled side surface of the triangular protrusion away from the end of the straight rod exposed outside and the inner wall of the adjustment cavity, a gasket is integrally formed with the lower end of the right-angled side of the triangular protrusion, and a column with an upper end extending out of the side wall of the straight rod is welded and fixed to the top surface of the gasket end, and a pressing block is provided at the top of the column.

[0010] According to the technical solution provided in the embodiment of the present application, a first spring cavity adapted to the first spring is provided inside the shell, the straight rod passes through the first spring and is welded and fixed to the sliding plate, the inner diameter of the first spring cavity is equal to the outer diameter of the first spring, and the outer diameter of the limiting ring is equal to the inner diameter of the first spring cavity.

[0011] According to the technical solution provided in the embodiment of the present application, the depth of the first spring cavity is equal to the sum of the length of the first spring in the natural state and the thickness of the limiting ring. When the first spring is in the natural state, the sliding plate is close to the inner wall of the sliding cavity at one end away from the plug connector.

[0012] According to the technical solution provided in the embodiment of the present application, a groove adapted to the portion of the triangular protrusion exposed outside the straight rod is provided on the inner side wall of the shell at one end away from the plug connector; when the telescopic rod is pushed inward until the exposed corner of the triangular protrusion engages with the groove, the pin extends into the socket, and the sliding plate is tightly attached to the sliding cavity close to the inner side wall of the plug connector.

[0013] According to the technical solution provided in the embodiment of the present application, a hinged protrusion adapted to the hinged column is provided on the bottom surface of the straight plate, a vertical rod is welded and fixed to a side surface of the top surface of the straight plate away from the end of the bent buckle and away from the hinged protrusion, a round block is integrally formed with the top end of the vertical rod extending out of the side wall of the shell, a second spring is installed on the bottom surface of the straight plate directly below the vertical rod, and a buckle groove adapted to the bent buckle is provided on the socket.

[0014] To summarize, the technical solution specifically discloses a multi-core plug that prevents the bending of core pins, which includes a shell, a sliding plate is slidably connected at one end of the shell close to the plug connector, a plurality of pins are installed on the side of the sliding plate close to the plug connector, and the pins can be inserted into the plug connector, a telescopic rod with an end connected to the back of the sliding plate is slidably connected at one end of the shell away from the plug connector, and a clamping part for fixing the entire plug is installed inside the shell; the pins can be telescoped and extended after the plugs are connected through the sliding plate, the telescopic rod and the plug connector, so as to avoid bending of the core pins during the plugging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 It is an exploded view of the overall structure of the utility model;

[0019] Figure 4 It is a cross-sectional view of the housing and the plug connector structure in the utility model;

[0020] Figure 5 It is an exploded view of the telescopic rod structure in the utility model;

[0021] Figure 6 It is a cross-sectional view of the rod structure in the utility model;

[0022] Figure 7 It is an exploded view of the structure of the clamping member in the utility model;

[0023] Figure 8 It is a cross-sectional view of the socket structure in the utility model.

[0024] In the figure:

[0025] 1. housing; 11. handle; 12. sliding cavity; 13. first spring cavity; 14. groove;

[0026] 2. Plug connector; 21. Docking block; 22. Socket;

[0027] 3. Sliding plate;

[0028] 4. Insert the pin;

[0029] 5. telescopic rod; 51. straight rod; 511. limiting ring; 512. adjusting cavity; 513. through hole; 52. triangular protrusion; 521. gasket; 53. column; 54. third spring;

[0030] 6. First spring;

[0031] 7. Snap-on part; 71. Straight plate; 711. Bending buckle; 72. Articulated protrusion; 73. Articulated column; 74. Second spring; 75. Vertical rod; 751. Round block;

[0032] 8. Socket; 81. Butt joint; 82. Buckle groove. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] See also Figure 1-Figure 8 A multi-core plug for preventing the core pins from bending comprises a shell 1, a plug connector 2 is arranged at the head end of the shell 1, a sliding plate 3 is slidably connected at one end of the shell 1 close to the plug connector 2, a plurality of pins 4 are installed on the side of the sliding plate 3 close to the plug connector 2, and the pins 4 can extend into the plug connector 2, a telescopic rod 5 whose end is connected to the back of the sliding plate 3 is slidably connected at one end of the shell 1 away from the plug connector 2, a first spring 6 is sleeved on the outer side of the telescopic rod 5 in the shell 1, a card connector 7 for fixing the entire plug is installed inside the shell 1, the card connector 7 comprises a straight plate 71 hinged to the shell 1 through a hinge column 73, one end of the straight plate 71 extends to the top of the plug connector 2 and is provided with a bent buckle 711; the shell 1 is provided with a socket 8 installed on an external charging pile outside one end of the plug connector 2.

[0036] In this embodiment, a handle 11 is integrally formed at the bottom end of the side wall of the shell 1, and a sliding cavity 12 adapted to the sliding plate 3 is provided in the shell 1, and the internal depth of the sliding cavity 12 is equal to the sum of the thickness of the sliding plate 3 and the length of the pin 4; the adapted sliding cavity 12 allows the sliding plate 3 to slide back and forth, thereby allowing the pin 4 to extend into the plug connector 2.

[0037] Furthermore, a plurality of docking blocks 21 are provided on the circumferential side wall of the plug connector 2, and the plug connector 2 is provided with a plurality of sockets 22 whose number is equal to the number of the pins 4 and whose positions correspond one to one, both ends of the sockets 22 are through-connected, and the end of the sockets 22 away from the sliding cavity 12 is in a trumpet shape, and a plurality of docking joints 81 whose number is equal to the number of the pins 4 and whose positions correspond one to one are provided in the socket 8; the docking blocks 21 facilitate the connection of the entire plug, and the trumpet-shaped sockets 22 facilitate the connection of the plug connector 2.

[0038] Secondly, the telescopic rod 5 includes a straight rod 51, a limiting ring 511 for limiting the first spring 6 is welded and fixed to the middle part of the outer wall of the straight rod 51, and the end of the straight rod 51 away from the sliding plate 3 is hinged with a triangular protrusion 52 through an adjusting cavity 512 opened inside it. The triangular protrusion 52 is in the shape of a right-angled triangle and one of its acute-angled ends is exposed through a through hole 513 connected to the adjusting cavity 512. A third spring 54 is provided between the bottom of the right-angled side surface of the triangular protrusion 52 away from the end exposed outside the straight rod 51 and the inner wall of the adjusting cavity 512, a gasket 521 is integrally formed at the lower end of the right-angled side of the triangular protrusion 52, and a column 53 with an upper end extending out of the side wall of the straight rod 51 is welded and fixed to the top surface of the end of the gasket 521, and a pressing block is provided at the top of the column 53; one corner of the triangular protrusion 52 is exposed outside the straight rod 51, and a telescopic protrusion is formed under the action of the third spring 54.

[0039] Furthermore, a first spring cavity 13 adapted to the first spring 6 is provided inside the shell 1, and the straight rod 51 passes through the first spring 6 and is welded and fixed to the sliding plate 3. The inner diameter of the first spring cavity 13 is equal to the outer diameter of the first spring 6, and the outer diameter of the limiting ring 511 is equal to the inner diameter of the first spring cavity 13; the outer diameter of the limiting ring 511 is designed so that when the straight rod 51 slides, it squeezes the first spring 6, causing the straight rod 51 to slide back and forth, thereby allowing the pin 4 to extend into or withdraw from the inside of the plug connector 2.

[0040] Secondly, the depth of the first spring cavity 13 is equal to the sum of the length of the first spring 6 in the natural state and the thickness of the limit ring 511. When the first spring 6 is in the natural state, the sliding plate 3 is close to the inner wall of the sliding cavity 12 away from the plug connector 2; in the natural state, the pin 4 is inside the shell 1 to protect the pin 4.

[0041] Furthermore, a groove 14 is provided on the inner side wall of the end of the shell 1 away from the plug connector 2, which is adapted to the portion of the triangular protrusion 52 exposed outside the straight rod 51. When the telescopic rod 5 is pushed inward until the exposed corner of the triangular protrusion 52 engages with the groove 14, the pin 4 extends into the socket 22, and the sliding plate 3 is close to the inner side wall of the sliding cavity 12 close to the plug connector 2; the exposed corner of the triangular protrusion 52 engages with the groove 14, so that the pin 4 extends into the plug connector 2 for charging.

[0042] Secondly, the bottom surface of the straight plate 71 is provided with a hinge protrusion 72 that is compatible with the hinge column 73, and a vertical rod 75 is welded and fixed to the side of the top surface of the straight plate 71 away from the bending buckle 711 and away from the hinge protrusion 72. The top of the vertical rod 75 extends out of the side wall of the shell 1 and is integrally formed with a round block 751. The bottom surface of the straight plate 71 is located directly below the vertical rod 75 and a second spring 74 is installed. The socket 8 is provided with a buckle groove 82 that is compatible with the bending buckle 711; the round block 751 is pressed to compress the second spring 74, so that the end of the straight plate 71 close to the bending buckle 711 is tilted up and can be detached from the bending buckle 711.

[0043] Working principle: When using the multi-core plug that prevents the core pin from bending of the utility model, the user first docks the socket through the docking block 21, and extends the plug connector 2 into the socket, and the bent buckle 711 is engaged with the inside of the socket, then presses the telescopic rod 5 inward, pushes the sliding plate 3 to slide forward along the sliding cavity 12, and then the pin 4 is extended into the plug connector 2 and docked with the inside of the socket. At this time, the exposed angle of the triangular protrusion 52 is engaged with the groove 14, thereby fixing the telescopic rod 5 and starting charging. After charging is completed, the column 53 is pressed to compress the third spring 54, so that the exposed angle of the triangular protrusion 52 is retracted into the adjustment cavity 512, the first spring 6 is restored, driving the telescopic rod 5 to slide, and then the sliding plate 3 slides backward along the sliding cavity 12, and the pin 4 is retracted into the shell 1, and finally the round block 751 is pressed to compress the second spring 74, so that the end of the straight plate 71 close to the bent buckle 711 is tilted, the bent buckle 711 is separated from the socket, and the plug is pulled out.

[0044] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features disclosed in the present application but not limited to those with similar functions.

Claims

1. A multi-core plug for preventing the core pins from bending, comprising a housing (1), characterized in that: The head end of the housing (1) is provided with a plug connector (2), a sliding plate (3) is slidably engaged with the end of the housing (1) close to the plug connector (2), a plurality of plug pins (4) are installed on the side of the sliding plate (3) close to the plug connector (2), and the plug pins (4) can be inserted into the plug connector (2), and a telescopic rod (5) whose end is connected to the back of the sliding plate (3) is slidably engaged with the end of the housing (1) away from the plug connector (2), and the telescopic rod (5) A first spring (6) is sleeved on the outer side of the portion inside the shell (1); a clamping member (7) for fixing the entire plug is installed inside the shell (1); the clamping member (7) comprises a straight plate (71) hinged to the shell (1) via a hinge column (73); one end of the straight plate (71) extends above the plug connector (2) and is provided with a bent buckle (711); the shell (1) is provided with a socket (8) installed on an external charging pile outside one end of the plug connector (2).

2. The multi-core plug for preventing the core pins from bending according to claim 1, characterized in that: A handle (11) is integrally formed at the bottom end of the side wall of the shell (1), and a sliding cavity (12) adapted to the sliding plate (3) is provided in the shell (1), wherein the internal depth of the sliding cavity (12) is equal to the sum of the thickness of the sliding plate (3) and the length of the insertion pin (4).

3. The multi-core plug for preventing the core pins from bending according to claim 2, characterized in that: A plurality of docking blocks (21) are provided on the circumferential side wall of the plug connector (2), the plug connector (2) is provided with a plurality of jacks (22) whose number is equal to the number of the plug pins (4) and whose positions correspond one to one, the two ends of the jacks (22) are connected, and the end of the jacks (22) away from the sliding cavity (12) is in a trumpet shape, and a plurality of docking heads (81) whose number is equal to the number of the plug pins (4) and whose positions correspond one to one are provided in the socket (8).

4. The multi-core plug for preventing the core pins from bending according to claim 3, characterized in that: The telescopic rod (5) comprises a straight rod (51), a limiting ring (511) for limiting the first spring (6) is welded and fixed on the middle part of the outer wall of the straight rod (51), an end of the straight rod (51) away from the sliding plate (3) is hinged with a triangular protrusion (52) through an adjustment cavity (512) provided inside the straight rod (51), the triangular protrusion (52) is in the shape of a right triangle and one of its acute angle ends is exposed through a through hole (513) connected to the adjustment cavity (512), a third spring (54) is provided between the bottom of the right angle side surface of the triangular protrusion (52) away from the end of the straight rod (51) exposed outside and the inner wall of the adjustment cavity (512), a gasket (521) is integrally formed at the lower end of the right angle side edge of the triangular protrusion (52), a column (53) with an upper end extending out of the side wall of the straight rod (51) is welded and fixed on the top surface of the end of the gasket (521), and a pressing block is provided at the top of the column (53).

5. The multi-core plug for preventing the core pins from bending according to claim 4, characterized in that: A first spring cavity (13) adapted to the first spring (6) is provided inside the housing (1); the straight rod (51) passes through the first spring (6) and is welded and fixed to the sliding plate (3); the inner diameter of the first spring cavity (13) is equal to the outer diameter of the first spring (6); and the outer diameter of the limiting ring (511) is equal to the inner diameter of the first spring cavity (13).

6. The multi-core plug for preventing the core pins from bending according to claim 5, characterized in that: The depth of the first spring cavity (13) is equal to the sum of the length of the first spring (6) in the natural state and the thickness of the limiting ring (511). When the first spring (6) is in the natural state, the sliding plate (3) is tightly attached to the inner wall of the sliding cavity (12) at one end away from the plug connector (2).

7. The multi-core plug for preventing the core pins from bending according to claim 4, characterized in that: A groove (14) is provided on the inner side wall of the end of the housing (1) away from the plug connector (2) and matched with the portion of the triangular protrusion (52) exposed outside the straight rod (51); when the telescopic rod (5) is pushed inward until the exposed corner of the triangular protrusion (52) engages with the groove (14), the plug pin (4) extends into the plug hole (22), and the sliding plate (3) is closely attached to the inner side wall of the sliding cavity (12) close to the plug connector (2).

8. The multi-core plug for preventing the core pins from bending according to claim 1, characterized in that: The bottom surface of the straight plate (71) is provided with a hinged protrusion (72) matched with the hinged column (73); a vertical rod (75) is welded and fixed to a side surface of the top surface of the straight plate (71) away from the bent buckle (711) and away from the hinged protrusion (72); a round block (751) is integrally formed after the top end of the vertical rod (75) protrudes out of the side wall of the shell (1); a second spring (74) is installed on the bottom surface of the straight plate (71) directly below the vertical rod (75); and a buckle groove (82) matched with the bent buckle (711) is provided on the socket (8).

Images