Quick plug-in cable joint for power distribution network

Abstract

The utility model relates to a quick plug-in cable joint for a power distribution network, which comprises a male plug and a female plug in plug-in connection with the male plug, the male plug is provided with a first electrode slice, the female plug is provided with a second electrode slice, the outer surface of the female plug is sleeved with a buffer sliding sleeve in a sliding manner, and the buffer sliding sleeve is provided with a second electrode slice. The end, away from the male plug, of the buffering sliding sleeve is fixedly connected with a tension spring, the outer surface of the female plug is connected with the buffering sliding sleeve capable of sliding in the length direction of the female plug through the tension spring, and the male plug and the female plug are locked through a column head and the buffering sliding sleeve after being connected. The first electrode plate and the second electrode plate are both kept attached, when the cable is subjected to external pulling acting force, the male plug can drive the buffer sliding sleeve to slide to cooperate with the elastic force of the tension spring for buffering, and the problem that the cable is broken due to hard pulling under the action of external force can be avoided as much as possible on the premise that stable power transmission is not affected.

Description

Technical Field

[0001] This utility model belongs to the field of cable joint technology, specifically relating to a quick-plug cable joint for power distribution networks. Background Technology

[0002] Cable joints, also known as cable terminations, are used to secure and fix incoming and outgoing cables after they have been laid, forming a continuous cable line. These connection points are called cable joints. Cable joints located in the middle of a cable line are called intermediate joints, while those at the ends of the line are called terminal joints. Cable joints are used to lock and secure the incoming and outgoing cables, and also serve to protect against water, dust, and vibration.

[0003] Existing cable joints are generally equipped with locking structures to prevent cables from coming apart due to external forces (such as workers tripping over the cables) after installation, thus affecting power transmission. However, when the cable is subjected to external forces, the locking structure makes the cable prone to being subjected to large tensile forces and breaking, which is inconvenient for users. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-plug cable connector for power distribution networks that has a simple structure and reasonable design in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A quick-plug cable connector for power distribution networks includes a male connector and a female connector that plugs into the male connector. The male connector is equipped with a first electrode plate, and the female connector is equipped with a second electrode plate. A buffer sleeve is slidably fitted on the outer surface of the female connector. A tension spring is fixedly connected to the end of the buffer sleeve away from the male connector. The tension spring is fitted onto the female connector, and the end of the tension spring away from the buffer sleeve is fixed to the female connector. A locking hole is provided at the end of the buffer sleeve away from the tension spring. A locking structure is installed on the male connector to lock the male connector and the buffer sleeve in conjunction with the locking hole.

[0007] As a further optimization of this utility model, an insulating plate is integrally formed in the inner cavity of the female plug, and two plug holes are symmetrically opened on the insulating plate, with the second electrode plate disposed in the plug hole.

[0008] As a further optimization of this utility model, the middle sections of the first electrode sheet and the second electrode sheet are bent towards each other, and the distance between the side of the first electrode sheet and the side of the second electrode sheet that are far apart is less than the inner cavity width of the insertion hole.

[0009] As a further optimization of this utility model, two symmetrically distributed guide holes are formed between the outer wall of the insulating plate and the inner wall of the female plug, and guide posts are fixedly connected to the male plug on both sides of the first electrode plate, with the two guide posts aligned with the two guide holes.

[0010] As a further optimization of this utility model, a limiting flange is integrally formed on the outer wall of the female plug near the male plug, and a slip ring sleeved on the female plug is fixedly connected to the inner wall of the end of the buffer sleeve connected to the tension spring. The inner diameter of the slip ring is smaller than the outer diameter of the limiting flange.

[0011] As a further optimization of this utility model, when the tension spring is in a contracted state, the distance between the slip ring and the limiting flange is less than the maximum extension length of the tension spring.

[0012] As a further optimization of this utility model, the locking structure includes two rubber plates fixedly installed on the male plug, and each of the two rubber plates has a post head fixedly connected to an adjacent side of its free end. The two posts head are respectively aligned with the two locking holes, and the side of the posts head closest to the female plug has an inclined surface.

[0013] As a further optimization of this utility model, two unlocking pressure plates are fixedly connected to the buffer sleeve. The end of the unlocking pressure plate away from the buffer sleeve is provided with a protrusion that is aligned with the locking hole. A sealing ring with an outer diameter that matches the inner diameter of the buffer sleeve is also fixedly fitted on the male plug.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The outer surface of the female plug is connected to a buffer sleeve that can slide along the length of the female plug via a tension spring. After the male plug is connected to the female plug, it is locked to the buffer sleeve by the post head. When the tension spring is in a contracted state and the slip ring is in contact with the limiting flange, the first electrode plate and the second electrode plate remain in contact. When the cable is subjected to external pulling force, the male plug can drive the buffer sleeve to slide and cooperate with the elastic force of the tension spring to buffer the cable. Without affecting the stable transmission of power, the cable can avoid the problem of breaking due to hard pulling when subjected to external force as much as possible.

[0016] 2. The middle sections of the first electrode and the second electrode are bent towards each other. The length of the bent section of the first electrode is less than the length of the bent section of the second electrode, and the distance between the two sides of the first and second electrode is less than the width of the inner cavity of the socket. Since the first and second electrode are both made of elastic metal material, when the first electrode is inserted into the socket, the first and second electrode undergo elastic deformation due to the limiting effect of the inner wall of the socket, and fit tightly together under the action of the socket, which greatly improves the stability of power supply. Attached Figure Description

[0017] Figure 1 This is an exploded view of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 3 This is a schematic diagram of the overall structure of the male connector of this utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the female connector of this utility model.

[0021] In the diagram: 1. Male connector; 2. Female connector; 3. First electrode plate; 4. Insulating plate; 5. Socket; 6. Second electrode plate; 7. Guide hole; 8. Guide post; 9. Buffer sleeve; 10. Limiting flange; 11. Tension spring; 12. Locking hole; 13. Rubber plate; 14. Column head; 15. Inclined surface; 16. Unlocking pressure plate; 17. Sealing ring. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Example

[0024] like Figure 1 - Figure 4 As shown, a quick-plug cable connector for power distribution network includes a male plug 1 and a female plug 2 that plugs into the male plug 1. A first electrode plate 3 is installed on the male plug 1. An insulating plate 4 is integrally formed in the inner cavity of the female plug 2. Two sockets 5 are symmetrically opened on the insulating plate 4. A second electrode plate 6 is provided in the socket 5. When the first electrode plate 3 installed on the male plug 1 is inserted into the socket 5, the second electrode plate 6 is attached to the first electrode plate 3, realizing the electrical connection between the male plug 1 and the female plug 2.

[0025] The middle sections of the first electrode 3 and the second electrode 6 are both bent towards each other. The length of the bent section of the first electrode 3 is less than the length of the bent section of the second electrode 6, and the distance between the two sides of the first electrode 3 and the second electrode 6 is less than the width of the inner cavity of the socket 5. Since the first electrode 3 and the second electrode 6 are both made of elastic metal material, when the first electrode 3 is inserted into the socket 5, the first electrode 3 and the second electrode 6 undergo elastic deformation due to the limiting effect of the inner wall of the socket 5, and fit tightly together under the action inside the socket 5 to ensure stable power supply.

[0026] Two symmetrically distributed guide holes 7 are formed between the outer wall of the insulating plate 4 and the inner wall of the female plug 2. Guide posts 8 are fixedly connected to the male plugs 1 on both sides of the first electrode plate 3. The two guide posts 8 are aligned with the two guide holes 7. The guide holes 7 and guide posts 8 can not only guide the first electrode plate 3 when it is inserted into the plug hole 5, but also improve the bending moment resistance of the connection between the male plug 1 and the female plug 2.

[0027] A buffer sleeve 9 is slidably fitted on the outer surface of the female plug 2. A tension spring 11 is fixedly connected to the end of the buffer sleeve 9 away from the male plug 1. The tension spring 11 is fitted on the female plug 2. The end of the tension spring 11 away from the buffer sleeve 9 is fixed to the female plug 2. A limiting flange 10 is integrally formed on the outer wall of the end of the female plug 2 close to the male plug 1. A slip ring fitted on the female plug 2 is fixedly connected to the inner wall of the end of the buffer sleeve 9 connected to the tension spring 11. The inner diameter of the slip ring is smaller than the outer diameter of the limiting flange 10. The limiting flange 10 is set to cooperate with the slip ring to limit the sliding path of the buffer sleeve 9 and prevent the buffer sleeve 9 from slipping off the outer surface of the female plug 2 as much as possible.

[0028] When the tension spring 11 is in the contracted state, the distance between the slip ring and the limiting flange 10 is less than the maximum extension length of the tension spring 11, so as to avoid the tension spring 11 being damaged by excessive stretching and unable to pull the buffer sleeve 9 to reset. When the tension spring 11 is in the contracted state and the slip ring is in contact with the limiting flange 10, the first electrode plate 3 and the second electrode plate 6 are both in contact, which can ensure that the buffer sleeve 9 can be stably powered between the male plug 1 and the female plug 2 during the sliding process.

[0029] A locking hole 12 is provided at the end of the buffer sleeve 9 away from the tension spring 11. A locking structure is installed on the male plug 1 to lock the male plug 1 and the buffer sleeve 9 in conjunction with the locking hole 12. The locking structure includes two rubber plates 13 fixedly installed on the male plug 1. A post 14 is fixedly connected to the adjacent side of the free end of the two rubber plates 13. The two posts 14 are respectively aligned with the two locking holes 12. An inclined surface 15 is provided on the side of the post 14 near the female plug 2. When in use, the first electrode plate 3 is aligned with the plug hole 5 and inserted into the plug hole 5 until the post 14 contacts the buffer sleeve 9. At this time, under the guidance of the inclined surface 15, the two rubber plates 13 bend towards each other, so that the post 14 and the rubber plate 13 can smoothly enter the buffer sleeve 9. When the post 14 slides to be aligned with the locking hole 12, the rubber plate 13 resets under its own elastic force, pushes the post 14 into the locking hole 12, and locks the male plug 1 and the buffer sleeve 9.

[0030] Two unlocking pressure plates 16 are fixedly connected to the buffer sleeve 9. The end of the unlocking pressure plate 16 away from the buffer sleeve 9 is provided with a protrusion that is opposite to the locking hole 12. When the user needs to pull out the male plug 1, the unlocking pressure plate 16 can be pressed towards the center of the buffer sleeve 9 so that the protrusion is inserted into the locking hole 12, thereby squeezing the post 14 out of the locking hole 12. At this time, the buffer sleeve 9 and the male plug 1 can be pulled in the opposite direction to pull out the first electrode plate 3 from the insertion hole 5.

[0031] The male plug 1 is also fixedly fitted with a sealing ring 17 whose outer diameter is adapted to the inner diameter of the buffer sleeve 9. When the male plug 1 and the buffer sleeve 9 are locked, the sealing ring 17 can be embedded in the buffer sleeve 9 to seal the connection between the male plug 1 and the buffer sleeve 9, thereby improving the sealing performance after the male plug 1 and the female plug 2 are connected.

[0032] It should be noted that this power distribution network uses quick-plug cable connectors. During use, the first electrode piece 3 connected to the male connector 1 is inserted into the socket 5, electrically connecting to the second electrode piece 6 connected to the female connector 2. The male connector 1 is then pushed towards the buffer sleeve 9 until the post 14 contacts the buffer sleeve 9. At this point, guided by the inclined surface 15, the two rubber plates 13 bend towards each other, allowing the post 14 and rubber plates 13 to smoothly enter the buffer sleeve 9. When the post 14 slides to align with the locking hole 12, the rubber plates 13 reset under their own elasticity, pushing the post 14... 4. Insert the male plug 1 into the locking hole 12 and lock it to the buffer sleeve 9. Since the buffer sleeve 9 is installed on the female plug 2 through the tension spring 11 and can slide on the female plug 2, and the tension spring 11 is in a contracted state and the slip ring is in contact with the limiting flange 10, the first electrode plate 3 and the second electrode plate 6 are both in contact. When the cable is subjected to external pulling force, the male plug 1 can drive the buffer sleeve 9 to slide and cooperate with the elastic force of the tension spring 11 to buffer. Under the premise of not affecting the stable transmission of power, it can avoid the problem of the cable breaking due to hard pulling when subjected to external force as much as possible.

[0033] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A quick-plug cable connector for power distribution networks, comprising a male connector (1) and a female connector (2) for plugging into the male connector (1), wherein a first electrode plate (3) is mounted on the male connector (1) and a second electrode plate (6) is mounted on the female connector (2), characterized in that: The outer surface of the female plug (2) is slidably fitted with a buffer sleeve (9). A tension spring (11) is fixedly connected to one end of the buffer sleeve (9) away from the male plug (1). The tension spring (11) is fitted on the female plug (2). The end of the tension spring (11) away from the buffer sleeve (9) is fixed to the female plug (2). A locking hole (12) is provided on one end of the buffer sleeve (9) away from the tension spring (11). A locking structure is installed on the male plug (1) to lock the male plug (1) and the buffer sleeve (9) in conjunction with the locking hole (12).

2. The quick-plug cable connector for power distribution networks according to claim 1, characterized in that: An insulating plate (4) is integrally formed in the inner cavity of the female plug (2). Two plug holes (5) are symmetrically opened on the insulating plate (4), and the second electrode plate (6) is disposed in the plug hole (5).

3. The quick-plug cable connector for power distribution networks according to claim 2, characterized in that: The middle sections of the first electrode plate (3) and the second electrode plate (6) are bent towards each other, and the distance between the side of the first electrode plate (3) and the side of the second electrode plate (6) that is far away from each other is less than the inner cavity width of the socket (5).

4. The quick-plug cable connector for power distribution networks according to claim 2, characterized in that: Two symmetrically distributed guide holes (7) are formed between the outer wall of the insulating plate (4) and the inner wall of the female plug (2). Guide posts (8) are fixedly connected to the male plug (1) on both sides of the first electrode plate (3). The two guide posts (8) are aligned with the two guide holes (7).

5. The quick-plug cable connector for power distribution networks according to claim 1, characterized in that: A limiting flange (10) is integrally formed on the outer wall of the female plug (2) near the male plug (1). A slip ring is fixedly connected to the inner wall of the end of the buffer sleeve (9) connected to the tension spring (11) and sleeved on the female plug (2). The inner diameter of the slip ring is smaller than the outer diameter of the limiting flange (10).

6. The quick-plug cable connector for power distribution networks according to claim 5, characterized in that: When the tension spring (11) is in a contracted state, the distance between the slip ring and the limiting flange (10) is less than the maximum extension length of the tension spring (11).

7. The quick-plug cable connector for power distribution networks according to claim 1, characterized in that: The locking structure includes two rubber plates (13) fixedly installed on the male plug (1). Each of the two rubber plates (13) has a post (14) fixedly connected to an adjacent side of its free end. The two posts (14) are respectively aligned with the two locking holes (12), and the side of the post (14) close to the female plug (2) has an inclined surface (15).

8. The quick-plug cable connector for power distribution networks according to claim 5, characterized in that: Two unlocking pressure plates (16) are fixedly connected to the buffer sleeve (9). The end of the unlocking pressure plate (16) away from the buffer sleeve (9) is provided with a protrusion that is opposite to the locking hole (12). A sealing ring (17) with an outer diameter that matches the inner diameter of the buffer sleeve (9) is also fixedly fitted on the male plug (1).

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