Distribution box

Abstract

The invention provides a distribution box, which comprises a box body, a box door, a wire inlet and a wire outlet, and is characterized in that an elastic assembly is arranged at the wire inlet and the wire outlet and is used for pre-tightening and pushing incoming and outgoing cables. The elastic assembly comprises an elastic knob, a pressing ring and a stop ring. And the tightening knob is in threaded connection with the box body through an external thread cylinder, and a conical surface I of the inner wall of the tightening knob is matched with a conical surface II of the pressing ring, so that the cable is pre-tightened and fixed. The pressing ring is composed of a plurality of arc-shaped pressing sheets and is suitable for cables with different diameters. And the stop ring limits the movement of the external thread barrel, so that the pre-tightening effect is ensured. The cable connection stability is enhanced, and the wiring position is prevented from being damaged due to external force pulling; wiring allowance is reserved, so that secondary wiring is facilitated; and the device has strong adaptability and is compatible with various specifications of cables.

Description

Technical Field

[0001] The invention relates to the technical field of distribution boxes, in particular to a distribution box. Background Art

[0002] In the power supply and distribution system, distribution boxes play a key role and are widely used in various scenarios such as industry, commerce and civil buildings. They are responsible for the rational distribution and precise control of electrical energy.

[0003] At present, the stability of cable connections in the actual use of distribution boxes is a prominent problem. The cable connection points of distribution boxes are usually fragile, and their strength is difficult to withstand large external forces. In daily use, various unexpected situations may cause the cables to be pulled. For example, in a construction site, personnel or equipment may inadvertently hook the cables entering and exiting the distribution box during movement; in a workshop environment, when plugging or unplugging electrical equipment or adjusting the position, the distribution box cables connected to it may also be accidentally pulled. Once the cable is pulled, it is very easy to be broken due to insufficient strength at the connection point, which will cause circuit failure, making the related equipment unable to operate normally, and bringing many inconveniences to production and life. In some places with extremely high requirements for the continuity of power supply, such as hospital operating rooms, data centers, etc., such power outages caused by the breaking of cable connections may even lead to serious consequences.

[0004] Although the prior art has made some progress in other aspects of the distribution box, no effective solution has been proposed for the key problem that the cable connection is easily damaged due to pulling. Therefore, it is urgent to develop a distribution box structure that can enhance the stability of cable connection and prevent the connection from being broken due to pulling, so as to meet the demand for power supply reliability in practical applications. Summary of the invention

[0005] In view of the deficiencies in the background technology, the present invention provides a distribution box.

[0006] The technical solution adopted by the present invention is: a distribution box, comprising a box body and a box door hinged to the box body, the box body is provided with an inlet and outlet, and also comprises a tensioning component installed on the inlet and outlet for pre-tightening and pushing the inlet and outlet cables;

[0007] The tension assembly includes a tension knob, a clamping ring and a stop ring. The outer ring of the inlet and outlet is provided with a circular groove, and the outer wall of the circular groove is provided with an "O"-shaped groove for embedding the stop ring. One end of the tension knob has an external threaded cylinder threadedly connected to the outer wall of the circular groove, and the inner wall of the external threaded cylinder is provided with a conical surface.

[0008] The clamping ring is arranged in the annular groove, and the clamping ring includes a plurality of arc-shaped pressing sheets arranged in a circumferentially spaced array. A convex step is arranged on the inner side of the arc-shaped pressing sheet, and a conical surface 2 matched with the above-mentioned conical surface 1 is arranged on the outer wall of the arc-shaped pressing sheet. A step ring capable of abutting against the top of the externally threaded cylinder is arranged at one end of the conical surface 2, and a step groove for the convex step to extend into the inlet and outlet is arranged on the inlet and outlet.

[0009] Furthermore, the tension knob also includes an operating ring integrally formed with the externally threaded cylinder, and the operating ring has a hexagonal structure, and a through hole in the middle thereof is provided for the cable to pass through.

[0010] Furthermore, the stop ring is made of elastic rubber.

[0011] Furthermore, the external thread of the externally threaded cylinder is arranged on the outer wall in the middle part of the externally threaded cylinder.

[0012] Furthermore, it also includes an elastic ring, and the arc-shaped pressing plate is provided with a series of through grooves for the elastic ring to pass through, and a plurality of arc-shaped pressing plates are connected in series on the elastic ring.

[0013] The beneficial effects of the present invention are:

[0014] Enhance the stability of cable connections: By setting elastic components at the inlet and outlet ports, the inlet and outlet cables can be pre-tightened. When the cable is pulled by external force, the fixing effect of the pre-tightening component can prevent the pulling force of the cable from directly acting on the wiring point of the cable, thereby effectively preventing the wiring point from being broken due to excessive force, significantly enhancing the stability of the cable connection, and ensuring the continuous and stable operation of the circuit. For example, in an industrial production workshop, the vibration generated by the operation of the equipment or the unintentional touching of the cable by the personnel during operation may cause the cable to be stressed, and the elastic component of the present invention can greatly reduce the risk of the wiring point being broken.

[0015] 2. Reserve wiring margin: After the cable is pre-tightened and fixed, the elastic component can also push the cable into the distribution box, so that there is a wiring margin between the cable connection point and the inlet and outlet. This margin facilitates the wiring between subsequent components and can be used as secondary wiring. For example, when replacing or rewiring components in the distribution box, this margin can meet the wiring requirements and reduce the trouble of rewiring due to short cables.

[0016] 3. Strong adaptability: The clamping ring is composed of multiple arc-shaped pressing pieces arranged in a circumferentially spaced array. This design enables the clamping ring to adapt to cables of different diameters. The convex step on the inner side of the arc-shaped pressing piece cooperates with the step groove on the inlet and outlet to provide stable fixation while ensuring compatibility with cables of different specifications. Whether it is a thinner control cable or a thicker power cable, it can be well pre-tightened and fixed through the tensioning assembly, expanding the scope of application of the distribution box.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 This is a schematic diagram from another viewing angle of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the clamping ring.

[0021] Figure 4 This is a partial cross-sectional view of the inlet and outlet.

[0022] Figure 1-4 Middle: 1. Box body; 2. Box door; 3. Inlet and outlet; 4. Elastic assembly; 5. Elastic knob; 6. Clamping ring; 7. Stop ring; 8. Circular ring groove; 9. Externally threaded cylinder; 10. Conical surface one; 11. Arc-shaped pressing piece; 12. Convex step; 13. Conical surface two; 14. Step ring; 15. Step groove; 16. Operating ring; 17. Through hole; 18. Elastic circular ring; 19. Series through groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] The invention provides a distribution box.

[0026] In this embodiment, refer to Figure 1-4 The distribution box comprises a box body 1 and a box door 2 hinged to the box body 1, the box body 1 is provided with an inlet and outlet port 3, and also comprises a tensioning component 4 installed on the inlet and outlet port 3 for pre-tightening and pushing the inlet and outlet cables;

[0027] The tension assembly 4 includes a tension knob 5, a clamping ring 6 and a stop ring 7. The outer ring of the inlet and outlet is provided with a circular groove 8, and the outer wall of the circular groove 8 is provided with an "O"-shaped groove for embedding the above-mentioned stop ring. One end of the tension knob has an external threaded cylinder 9 threadedly connected to the outer wall of the circular groove, and the inner wall of the external threaded cylinder is provided with a tapered surface 10;

[0028] The clamping ring is arranged in the annular groove, and the clamping ring includes a plurality of arc-shaped pressing pieces 11 arranged in a circumferentially spaced array, a convex step 12 is arranged on the inner side of the arc-shaped pressing piece 11, and a conical surface 2 13 matched with the conical surface 10 is arranged on the outer wall of the arc-shaped pressing piece 11, and a step ring 14 capable of abutting against the top of the externally threaded cylinder is arranged at one end of the conical surface 2, and a step groove 15 for the convex step to extend into the inlet and outlet ports is provided on the inlet and outlet ports.

[0029] In the above technical solution, by setting a tensioning assembly including a tensioning knob, a clamping ring and a stop ring, the pre-tightening and pushing functions of the incoming and outgoing cables are realized. Pre-tightening the cables can prevent external forces from directly acting on the wiring points, prevent the wiring points from being broken, and improve the stability of the cable connection; pushing the cables can leave a margin between the wiring points and the inlet and outlet ports, which is convenient for secondary wiring and provides convenience for wiring components in the distribution box.

[0030] The use principle of the above tensioning components is:

[0031] Insert the cables into the distribution box from the inlet and outlet ports, connect them to the components in the distribution box, and then rotate the tension knob to use the interacting conical surfaces 1 and 2 to tighten the cables with the convex step.

[0032] After the cable is tightened and fixed, continue to rotate the tension knob until the top of the external threaded barrel is against the stop ring. When secondary wiring is required or cable margin is required, continue to rotate the tension knob to make the top of the external threaded barrel pass over the stop ring, and at the same time push the compression ring and the cable fixed by the step ring to the inside of the box, thereby providing cable margin for secondary wiring.

[0033] Specifically, the tension knob further includes an operating ring 16 integrally formed with the externally threaded cylinder. The operating ring has a hexagonal structure and a through hole 17 in the middle thereof for the cable to pass through.

[0034] In this embodiment, the tension knob is provided with a hexagonal operating ring integrally formed with the external threaded barrel, and a through hole is provided in the middle for the cable to pass through. The hexagonal structure is convenient for operators to operate using tools such as wrenches, making the rotation of the tension knob more labor-saving and accurate, and improving the convenience of operation when installing and adjusting the tension component; the through hole is designed for the cable to pass through.

[0035] Specifically, the stop ring is made of elastic rubber.

[0036] In this embodiment, the stop ring is made of elastic rubber, and the good elasticity and flexibility of the elastic rubber are utilized to provide a reliable stop function. At the same time, the top of the externally threaded cylinder can also smoothly pass over the stop ring under sufficient external force.

[0037] Specifically, the external thread of the externally threaded cylinder is arranged on the outer wall in the middle part of the externally threaded cylinder.

[0038] In this embodiment, the external thread of the externally threaded barrel is only provided in the middle, and both ends thereof are in a smooth state, which can reduce the thread processing length and reduce the cost, and at the same time, avoid the front end thread affecting the service life of the stop ring.

[0039] Specifically, it also includes an elastic ring 18. The arc-shaped pressing sheet is provided with a series through groove 19 for the elastic ring to pass through, and a plurality of arc-shaped pressing sheets are connected in series on the elastic ring.

[0040] In this embodiment, an elastic ring is added, and a series through groove is set on the arc-shaped pressing piece, so that multiple arc-shaped pressing pieces are connected in series on the elastic ring. This series structure makes the relative position between the arc-shaped pressing pieces more stable. During the pre-tightening and pushing of the cable, the arc-shaped pressing pieces can work together to avoid displacement or loosening of a single arc-shaped pressing piece, further improving the overall performance of the tensioning assembly. The gap of the series through groove is greater than the thickness of the elastic ring, ensuring the radial movement of the arc-shaped pressing piece.

[0041] Technical personnel should note that: Although the present invention has been described according to the above specific implementation methods, the concept of the present invention is not limited to this invention, and any modification using the concept of the present invention will be included in the scope of protection of this patent right.

Claims

1. A distribution box, comprising a box body and a box door hinged to the box body, wherein the box body is provided with an inlet and outlet, and is characterized in that: It also includes a tensioning assembly installed on the inlet and outlet ports for pre-tightening and pushing the inlet and outlet cables; The tension assembly includes a tension knob, a clamping ring and a stop ring. The outer ring of the inlet and outlet is provided with a circular groove, and the outer wall of the circular groove is provided with an "O"-shaped groove for embedding the stop ring. One end of the tension knob has an external threaded cylinder threadedly connected to the outer wall of the circular groove, and the inner wall of the external threaded cylinder is provided with a conical surface. The clamping ring is arranged in the annular groove, and the clamping ring includes a plurality of arc-shaped pressing sheets arranged in a circumferentially spaced array. A convex step is arranged on the inner side of the arc-shaped pressing sheet, and a conical surface 2 matched with the above-mentioned conical surface 1 is arranged on the outer wall of the arc-shaped pressing sheet. A step ring capable of abutting against the top of the externally threaded cylinder is arranged at one end of the conical surface 2, and a step groove for the convex step to extend into the inlet and outlet is arranged on the inlet and outlet.

2. The distribution box according to claim 1, characterized in that: The tension knob also includes an operating ring integrally formed with the external threaded cylinder, and the operating ring has a hexagonal structure, and a through hole in the middle thereof is provided for the cable to pass through.

3. The distribution box according to claim 1, characterized in that: The stop ring is made of elastic rubber.

4. The distribution box according to claim 1, characterized in that: The external thread of the externally threaded cylinder is arranged on the outer wall of the middle part of the externally threaded cylinder.

5. The distribution box according to any one of claims 1 to 4, characterized in that: It also includes an elastic ring, and the arc-shaped pressing sheet is provided with a series of through grooves for the elastic ring to pass through, and a plurality of arc-shaped pressing sheets are connected in series to the elastic ring.

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