A protective device for electric wires and cables in an electrical bridge entering a distribution box

Abstract

The present application relates to the technical field of electrical bridges, and specifically discloses a protective device for electric wires and cables in an electrical bridge entering a distribution box, including a distribution box and an electrical bridge connected to the outside of the distribution box, and also includes: a protective mechanism is arranged between the electrical bridge and the distribution box; the protective mechanism includes a protection box, and also includes: a plurality of limit plates are fixedly arranged in a horizontal state in the inner cavity of the protection box in a group of two, and a accommodating space for curved cables is formed between the two limit plates; a contact component can move in a straight line direction through all the limit plates and contact with the cables; a one-way limit component is arranged at the upper and lower ends of the protection box, and both ends of the contact component extend into the one-way limit component, which is used to keep the cable bent when the cable moves into the distribution box, and release the curved cable to provide displacement compensation when the cable is away from the distribution box. The main purpose of the present application is to maintain the stability and reliability of power transmission.

Description

Technical Field

[0001] The present application relates to the technical field of electrical bridges, and in particular to a protection device for electric wires and cables in an electrical bridge entering a distribution box. Background Art

[0002] In the electrical system, the connection of wires and cables in the electrical bridge to the distribution box is an extremely common connection configuration. There are many problems in the use of the existing distribution box and the electrical bridge. On the one hand, the cable will be affected by various external forces during the connection process, such as the vibration generated by the operation of the equipment, the settlement of the building, and the thermal expansion and contraction caused by temperature changes. These external forces may cause the cable to be stretched, twisted or squeezed, and then the line connection points will be subjected to improper stress, which may easily cause loose connection points, poor contact and even line breakage, seriously affecting the stability and reliability of power transmission. On the other hand, traditional connection methods often lack effective protection measures, cannot reasonably layout and fix the cables, and cannot provide sufficient displacement compensation when the cables are subjected to external forces. Therefore, the cables are easily damaged in complex working environments, which reduces their service life, increases maintenance costs and the failure rate of the power system, and brings many inconveniences and safety hazards to electrical workers. Summary of the invention

[0003] An embodiment of the present application provides a protection device for electric wires and cables in an electrical bridge entering a distribution box, the main purpose of which is to maintain the stability and reliability of power transmission.

[0004] To achieve the above-mentioned purpose, the embodiment of the present application provides a protection device for electric wires and cables in an electrical bridge entering a distribution box, comprising a distribution box and an electrical bridge connected to the outside of the distribution box, and further comprising:

[0005] A protection mechanism is arranged between the electrical bridge and the distribution box;

[0006] The protection mechanism includes a protection box and further includes:

[0007] A plurality of limiting plates, each two of which are fixedly arranged in a horizontal state in the inner cavity of the protection box, and a accommodating space for the bent cable is formed between the two limiting plates;

[0008] A contact component, which can move in a linear direction, penetrates all the limit plates, and contacts the cables;

[0009] The one-way limit assembly is arranged at the upper and lower ends of the protection box, and the two ends of the contact assembly extend into the one-way limit assembly, which is used to keep the cable bent when the cable moves into the distribution box, and release the bent cable to provide displacement compensation when the cable moves away from the distribution box.

[0010] In a feasible embodiment, the distribution box is also provided with: a box plate, which is attached to the side of the protection box; an inlet hole, which is opened on the box plate, and multiple cables pass through the inlet hole, the inlet hole and the electrical bridge are located on one side of the inner cavity of the protection box, and the contact assembly is located on the other side of the inner cavity of the protection box, which is used to form a curved cable shape.

[0011] In a feasible embodiment, the contact assembly includes: a moving rod, which is perpendicular and passes through all the limit plates, and the moving rod can move linearly along the length direction of the limit plates, and a notch is provided on the rod body of the moving rod on the inner side of each group of the limit plates; a rotating shaft, which is rotatably arranged in the inner cavity of the moving rod and passes through all the notches; at least one abutment block is fixedly mounted on the outer wall of the rotating shaft and is located in the notch of the moving rod, and the abutment block faces the side away from the box inlet hole and the electrical bridge; the number of the abutment blocks is equal to the number of the cables, and corresponds one to one.

[0012] In a feasible embodiment, the one-way limit assembly includes: a one-way limit seat, which is fixedly arranged at both ends of the inner cavity of the protection box and is sleeved on the outer side of the one-way limit block; a clamping plate, which is arranged in the one-way limit seat and corresponds to the position of the one-way limit block; the clamping plate is located on one side of the distribution box; a slide rail, which is arranged in the one-way limit seat, and the slide rail is located on one side of the electrical bridge; an elastic abutment rod, which is fixed in the one-way limit seat, and the telescopic end of the elastic abutment rod abuts against the contact assembly.

[0013] In a feasible embodiment, an abutment groove is provided on the inner wall of the abutment block so that the portion of the cable located in the abutment groove forms a bending section, wherein the middle portion of the abutment groove is a straight section, and a first arc section and a second arc section protruding in the middle are respectively provided at both ends of the straight section, the first arc section is located between the distribution box and the straight section, and the second arc section is located between the electrical bridge and the straight section.

[0014] In a feasible embodiment, the one-way limit block includes: a horizontal seat, which is fixedly disposed at the end of the rotating shaft and extends outward in a horizontal direction from the center of the rotating shaft; a plurality of latch teeth, which are fixedly disposed on the side wall of the horizontal seat and are latched on the latch plate; and a roller, which is disposed on the other side wall of the horizontal seat and can be moved onto the slide rail.

[0015] In a feasible embodiment, a manual limiting mechanism is also provided on the protection box, and the manual limiting mechanism includes: a dust cover, fixedly mounted on the outer wall of the protection box; a boss, fixedly connected to the end of the rotating shaft, and the boss can be movably arranged in the inner cavity of the dust cover; a socket, penetrating through the body of the boss; and a pin, which can movably penetrate the side wall and the socket of the dust cover.

[0016] In a feasible implementation manner, the first side wall and the second side wall in the latch have the same inclination direction, both inclining toward the rotating shaft; or the first side walls are both inclining toward the rotating shaft, and the second side wall is perpendicular to the horizontal seat.

[0017] In a feasible embodiment, a direction-maintaining elastic seat is further provided in the one-way limit seat, and the direction-maintaining elastic seat includes an elastic sheet, and the elastic sheet is used to keep the abutment block always having the power to turn to one side of the card plate.

[0018] In a feasible implementation manner, the electrical bridge includes a narrow section and a transition section, the transition section is connected to the protection box, and the narrow section is connected to the other end of the transition section.

[0019] The present application provides a protection device for electric wires and cables in an electrical bridge entering a distribution box, which can effectively solve the problem of possible damage and improper force that may cause failure of the cables during connection to the distribution box; the limit plate, contact assembly and one-way limit assembly in the protection box cooperate with each other, which can keep the cable in a bent state when entering the distribution box, and when the cable is subjected to external force, the bent cable can be automatically released to provide displacement compensation; therefore, the present application innovatively provides a wiring method for cables in the electrical bridge, enhances the reliability and stability of the distribution system, and provides comprehensive and effective protection for the electric wires and cables in the electrical bridge entering the distribution box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a protection device for electric wires and cables in an electrical bridge entering a distribution box provided in an embodiment of the present application is shown;

[0021] Figure 2 A schematic diagram of the structure of the limit plate provided in an embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram of the structure of a moving rod provided in an embodiment of the present application is shown;

[0023] Figure 4 Shows Figure 3 A local enlarged view of point A in FIG.

[0024] Figure 5A schematic diagram of the structure of cables located in an electrical bridge provided in an embodiment of the present application is shown;

[0025] Figure 6 A schematic diagram of the structure of a cable bending section provided in an embodiment of the present application is shown;

[0026] Figure 7 A schematic diagram of the structure of the abutment groove provided in an embodiment of the present application is shown;

[0027] Figure 8 A schematic diagram of the structure of the rotating shaft provided in an embodiment of the present application is shown;

[0028] Fig. 9 A schematic diagram of the structure of a card plate and a slide rail provided in an embodiment of the present application is shown;

[0029] Fig.10 A schematic diagram of the structure of a manual limiting mechanism provided in an embodiment of the present application is shown;

[0030] Fig.11 A schematic diagram of the structure of the roller and the latching teeth provided in an embodiment of the present application is shown;

[0031] Fig.12 A schematic diagram of the structure of the side wall of the latch teeth provided in an embodiment of the present application is shown;

[0032] Fig.13 A schematic diagram of the structure of the elastic sheet provided in an embodiment of the present application is shown;

[0033] Fig.14 A schematic diagram of the structure of a straight line segment provided in an embodiment of the present application is shown.

[0034] In the figure: 10, distribution box, 20, electrical bridge, 30, protection mechanism, 40, manual limiting mechanism, 50, cable, 60, elastic sheet, 11, box plate, 12, box inlet hole, 21, narrow section, 22, transition section, 31, protection box, 32, limit plate, 33, contact assembly, 34, one-way limit assembly, 41, dust cover, 42, boss, 43, jack, 44, latch, 51, bending section, 331, moving rod, 3 32. Rotating shaft, 333. Abutment block, 334. One-way limit block, 341. One-way limit seat, 342. Clamping plate, 343. Slide rail, 344. Elastic abutment rod, 3331. Abutment groove, 3341. Horizontal seat, 3342. Clamping tooth, 3343. Roller, 3342a. First side wall, 3342b. Second side wall, 3331a. Straight line segment, 3331b. First arc segment, 3331c. Second arc segment. DETAILED DESCRIPTION

[0035] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0036] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations. Example

[0037] See also Figures 1 to 14 As shown, an embodiment of the present application provides a protection device for electric wires and cables in an electrical bridge entering a distribution box, including a distribution box 10 and an electrical bridge 20 connected to the outside of the distribution box 10, and also includes a protection mechanism 30. The protection mechanism 30 is arranged between the electrical bridge 20 and the distribution box 10. Through the setting of the protection mechanism 30, this example effectively forms protection for the lines in the distribution box 10 to prevent the line connection points from being stretched due to stress, gravity or other unexpected forces in an abnormal environment.

[0038] Specifically, the protection mechanism 30 provided in this embodiment includes a protection box 31, and also includes: a plurality of limit plates 32, a contact assembly 33 and a one-way limit assembly 34. Each two limit plates 32 are fixedly arranged in the inner cavity of the protection box 31 in a horizontal state as a group, and a storage space for the bent cable 50 is formed between the two limit plates 32; the contact assembly 33 can move in a straight line direction through all the limit plates 32 and contact with the cable 50; the one-way limit assembly 34 is arranged at the upper and lower ends of the protection box 31, and both ends of the contact assembly 33 extend into the one-way limit assembly 34, which is used to keep the cable 50 bent when the cable 50 moves into the distribution box 10, and release the bent cable 50 to provide displacement compensation when the cable 50 moves away from the distribution box 10.

[0039] The protection device for the electric wires and cables in the electrical bridge entering the distribution box provided by the present application can effectively solve the problem of damage and improper stress that may occur in the process of connecting the cable to the distribution box 10, which may lead to failure. Among them, the protection box 31 is connected between the electrical bridge 20 and the distribution box 10. The protection box 31 is fixed as a whole and is a configuration independent of the distribution box 10. The multiple limit plates 32 inside the protection box 31 are grouped in pairs, and the gaps between the limit plates 32 in each group are used to form a accommodating space suitable for bending cables. The cable 50 in the bent state in the protection box 31 will not affect the neatness of the line in the distribution box 10, nor will it cause confusion in the line in the electrical bridge 20. Accordingly, the cable 50 in the bent state formed in the protection box 31 can be automatically supplemented when the cable 50 is subjected to improper stress or tension, so as to fully ensure that the line in the distribution box 10 is in a good wiring state.

[0040] Furthermore, the device further comprises a contact assembly 33, wherein the contact assembly 33 penetrates all the limit plates 32, and can move in a straight line direction when the cable 50 is under stress, thereby partially releasing the bent portion of the cable 50, so as to ensure that the cable 50 in the distribution box 10 is in a good connection state; during the configuration of the cable 50 in the distribution box 10, the cable moves into the distribution box 10, and during this movement, the one-way limit assembly 34 provides restrictions at the upper and lower ends, and under the action of this restriction, the overall position of the contact assembly 33 does not change, so as the threading process, The line also always passes through the contact assembly 33, and always retains the bent portion in the protection box 31 to maintain its structural integrity; when the cable is away from the distribution box 10 (for example, when the cable 50 is subjected to external force, soil environmental stress or improper maintenance, the one-way limit assembly 34 can automatically release the restriction on the contact assembly 33, and the bent portion of the cable can be released as the stress or tension is applied, so that the cable can be compensated for displacement; by optimizing the wiring method of the cable in the electrical bridge, the service life and safety of the cable are significantly improved, and the reliability and stability of the distribution system are also enhanced.

[0041] like Figure 6 As shown, in some examples, further, the distribution box 10 is also provided with: a box plate 11 and a box inlet hole 12, the box plate 11 is attached to the side of the protection box 31; the box inlet hole 12 is opened on the box plate 11, and multiple cables 50 pass through the box inlet hole 12, the box inlet hole 12 and the electrical bridge 20 are located on one side of the inner cavity of the protection box 31, and the contact assembly 33 is located on the other side of the inner cavity of the protection box 31, which is used to form a curved shape of the cable 50.

[0042] In this example, the box plate 11 plays a connecting and supporting role, providing an installation position for the box entrance hole 12; the box entrance hole 12 is opened on the box plate 11, and multiple cables 50 pass through it, so that the cable 50 can enter the inner cavity of the protection box 31 from the electrical bridge 20 through the box entrance hole 12; the box entrance hole 12 and the electrical bridge 20 are located on one side of the inner cavity of the protection box 31, and the contact assembly 33 is located on the other side. This layout is to form a curved shape of the cable 50; when the cable 50 enters the protection box 31 from the electrical bridge 20 through the box entrance hole 12, it will form a bend in the protection box 31. This bending shape has a protective effect, which effectively protects the cable 50 from damage and improper force during the connection process of the distribution box 10, ensures the stability and reliability of the line connection, and at the same time, through the automatic compensation function of the bent cable 50, the service life of the cable is improved, and the safety and stability of the distribution system are enhanced.

[0043] like Figure 4 , Figure 5 , Figure 7 , Fig. 9 , Fig.10 , Fig.11 and Fig.14 As shown, in some examples, further, the contact assembly 33 includes: a moving rod 331, a rotating shaft 332, an abutment block 333 and a one-way limit block 334, the moving rod 331 is perpendicular and passes through all the limit plates 32, the moving rod 331 can move linearly along the length direction of the limit plates 32, and a notch is provided on the rod body of the moving rod 331 on the inner side of each group of limit plates 32; the rotating shaft 332 can be rotatably set in the inner cavity of the moving rod 331 and pass through all the notches; the abutment block 333 is fixedly mounted on the outer wall of the rotating shaft 332 and is located in the notch of the moving rod 331, and the abutment block 333 faces the side away from the box inlet hole 12 and the electrical bridge 20; the one-way limit block 334 is fixedly arranged at both ends of the rotating shaft 332, and the one-way limit block 334 can be clamped in the one-way limit assembly 34.

[0044] In this example, it should be noted that the function of the movable rod 331 is to provide support and guidance for the entire contact assembly 33. When the cable 50 is subjected to force, it can move linearly along the length direction of the limit plate 32 to release part of the cable 50. Specifically, a rotating shaft 332 is provided in the movable rod 331, and the rotating shaft 332 provides rotation support for the abutment block 333, so that the abutment block 333 can follow the adaptive rotation under the force state in different directions; the abutment block 333 is fixedly sleeved on the outer wall of the rotating shaft 332, facing the side away from the box inlet hole 12 and the electrical bridge 20, and its function is to provide a curved line placement channel, so that the inserted line will inevitably form a curve. The one-way limit block 334 is used to keep the cable 50 in a bent state when the cable 50 moves into the distribution box 10 with the cooperation of the one-way limit assembly 34, and to release the bent cable 50 as needed to provide displacement compensation when the cable 50 is away from the distribution box 10, thereby effectively solving the problem of cable damage caused by external force during the connection of the cable to the distribution box 10.

[0045] like Fig. 9 , Fig.11 and Fig.12 As shown, in some examples, further, the one-way limit assembly 34 includes: a one-way limit seat 341, a clamping plate 342, a slide rail 343 and an elastic abutment rod 344, the one-way limit seat 341 is fixedly arranged at both ends of the inner cavity of the protection box 31, and is sleeved on the outer side of the one-way limit block 334; the clamping plate 342 is arranged in the one-way limit seat 341, corresponding to the position of the one-way limit block 334; the clamping plate 342 is located on one side of the distribution box 10; the slide rail 343 is arranged in the one-way limit seat 341, and the slide rail 343 is located on one side of the electrical bridge 20; the elastic abutment rod 344 is fixed in the one-way limit seat 341, and the telescopic end of the elastic abutment rod 344 abuts on the contact assembly 33.

[0046] In this example, the one-way limit seat 341 is fixed at both ends of the inner cavity of the protection box 31 and is sleeved on the outside of the one-way limit block 334, providing an installation basis for the entire one-way limit assembly 34, as well as a positioning and limiting function for the one-way limit block 334; the one-way limit seat 341 is further provided with a clamping plate 342, which is arranged in the one-way limit seat 341 and corresponds to the position of the one-way limit block 334, and is located on one side of the distribution box 10. Its function is to cooperate with the one-way limit block 334 when the cable moves into the distribution box 10, to limit the rotation of the one-way limit block 334, thereby keeping the cable 50 in a bent state; the slide rail 343 is provided In the one-way limit seat 341 and located on one side of the electrical bridge 20, a moving track is provided for the roller 3343 on the one-way limit block 334. When the cable 50 needs to release displacement compensation, the roller 3343 can move on the slide rail 343; the elastic abutment rod 344 is fixed in the one-way limit seat 341, and its telescopic end abuts the contact component 33. On the one hand, it provides a certain supporting force for the contact component 33 to maintain a stable position under normal conditions. On the other hand, when the one-way limit block 334 is actuated, it can cooperate with the abutment of the contact component 33 to adjust the bending state of the cable 50 to avoid confusion of the lines.

[0047] When the cable moves into the distribution box 10 for threading or maintenance, the clamping teeth 3342 of the one-way limit block 334 engage with the clamping plate 342, limiting the rotation of the shaft 332 and also limiting the movement of the moving rod 331, preventing the bent cable 50 from becoming straight. At this time, the cable 50 remains bent under the action of the contact assembly 33 and smoothly passes into the distribution box 10. When the cable 50 is subject to external force and moves away from the distribution box 10, the cable 50 moves, synchronously driving the abutment block 333 and the shaft 332 to rotate, and the one-way limit block 334 rotates synchronously, thereby breaking away from the restriction of the card plate 342, the card tooth 3342 disengages from the card plate 342, and the roller 3343 of the one-way limit block 334 moves to the slide rail 343. At the same time, the elastic abutment rod 344 abuts according to the movement of the contact component 33 to maintain a stable release amount of the cable 50, providing displacement compensation for the cable 50; ensuring that the cable 50 can be reasonably protected under different circumstances, and solving the problem of possible damage and unstable connection of the cable due to external force during the connection of the cable to the distribution box 10.

[0048] like Figure 7 , Fig.10 and Fig.14As shown, in some examples, further, an abutment groove 3331 is provided on the inner wall of the abutment block 333, so that the portion of the cable 50 located in the abutment groove 3331 forms a bending section 51, wherein the middle portion of the abutment groove 3331 is a straight section 3331a, and a first arc section 3331b and a second arc section 3331c protruding in the middle are respectively provided at both ends of the straight section 3331a, the first arc section 3331b is located between the distribution box 10 and the straight section 3331a, and the second arc section 3331c is located between the electrical bridge 20 and the straight section 3331a.

[0049] In this example, the abutment groove 3331 on the inner wall of the abutment block 333 is always in contact with the cable 50. The straight section 3331a in the middle provides a relatively stable support position for the cable 50. When the cable 50 is located therein, it can also approach a straight line state, cooperating with the first arc section 3331b and the second arc section 3331c on both sides. The first arc section 3331b and the second arc section 3331c at both ends play a role in further increasing the friction between the cable 50 and the abutment block 333, so that after the cable 50 moves, it can drive the entire abutment block 333 to rotate synchronously through the setting of the multi-segment structure, thereby enhancing the synchronous follow-up movement of the abutment block 333 and the cable 50.

[0050] like Fig.11 As shown, in some examples, further, the one-way limit block 334 includes: a horizontal seat 3341, a plurality of latch teeth 3342 and a roller 3343, the horizontal seat 3341 is fixedly disposed at the end of the rotating shaft 332, and extends outward in a horizontal direction from the center of the rotating shaft 332; the plurality of latch teeth 3342 are fixedly disposed on the side wall of the horizontal seat 3341, and are clamped on the clamping plate 342; the roller 3343 is disposed on the other side wall of the horizontal seat 3341, and can be moved to the slide rail 343.

[0051] In this example, it can be understood that the horizontal seat 3341 is fixed at the end of the shaft 332 and extends outward, and can rotate synchronously with the shaft 332. That is to say, in the process of the cable 50 moving outward, the horizontal seat 3341 can also rotate synchronously with the shaft 332. At the same time, the horizontal seat 3341 also provides an installation basis for the latch teeth 3342 and the roller 3343; multiple latch teeth 3342 are fixed on the side wall of the horizontal seat 3341, and their function is to cooperate with the clamping plate 342. When the cable 50 moves into the distribution box 10, the latch teeth 3342 are clamped on the clamping plate 342, so as to limit the rotation of the shaft 332 and limit The position of the movable rod 331 is adjusted to achieve the function of keeping the cable 50 bent, ensuring that the cable 50 can still retain a partially bent and supplemented portion when inserting into the distribution box 10; the roller 3343 is arranged on the side wall on the other side of the horizontal seat 3341. When the cable 50 is subjected to an external force away from the distribution box 10, the clamping tooth 3342 disengages from the clamping plate 342, and the roller 3343 can move to the slide rail 343, providing guidance and support for the movement of the one-way limit block 334, so that the one-way limit block 334 can move smoothly, and at the same time drive the rotating shaft 332 and the contact assembly 33 to move, releasing the bent cable 50 to provide displacement compensation.

[0052] The working principle and process are as follows: in the initial state, when the cable 50 starts to move into the distribution box 10 for threading, the latch tooth 3342 is engaged with the latch plate 342. At this time, the one-way limit block 334 cannot rotate, and the cable 50 remains bent under the action of the contact component 33 and smoothly passes into the distribution box 10; when the cable 50 is subjected to an external force and tends to move away from the distribution box 10, the external force causes the latch plate 342 to release the engagement restriction on the latch tooth 3342, and the latch tooth 3342 is separated from the latch plate 342. The roller 3343 rolls on the slide rail 343, driving the one-way limit block 334 to move, thereby rotating the shaft 332, and the moving rod 331 of the contact component 33 moves along the limit plate 32, releasing the bent part of the cable 50, and providing displacement compensation space for the cable 50; the problem of unstable connection and damage caused by external force in the process of connecting the cable to the distribution box 10 is solved, and the service life of the cable and the safety of the distribution system are improved.

[0053] like Figure 1 , Figure 2 and Fig.10 As shown, in some examples, further, a manual limiting mechanism 40 is also provided on the protection box 31, and the manual limiting mechanism 40 includes: a dust cover 41, a boss 42, a socket 43 and a latch 44, the dust cover 41 is fixedly arranged on the outer wall of the protection box 31; the boss 42 is fixedly connected to the end of the rotating shaft 332, and the boss 42 can be movably arranged in the inner cavity of the dust cover 41; the socket 43 is opened through the column body of the boss 42; the latch 44 can movably pass through the side wall of the dust cover 41 and the socket 43.

[0054] In this example, considering some scenarios, the cable 50 may not require a flexible compensation mechanism. For example, during line threading or maintenance, the cable 50 in the distribution box 10 is too long and the excessively long cable 50 needs to be moved from the distribution box 10 to the electrical bridge 20. The compensation mechanism described above can be canceled by the manual limiting mechanism 40, so that when the excessively long cable 50 moves from the distribution box 10 to the electrical bridge 20, it will not cause the moving rod 331 to move. Therefore, when the cable 50 is moved in another direction, the portion of the cable 50 in the curved section in the protection box 31 can also be maintained.

[0055] Specifically, the dust cover 41 is fixed on the outer wall of the protective box 31, and mainly plays the role of dust prevention and protection of the internal structure, preventing the parts in the manual limiting mechanism 40 from being exposed; in addition, the boss 42 is fixedly connected to the end of the rotating shaft 332 and can move in the inner cavity of the dust cover 41, and it moves synchronously with the movement of the rotating shaft 332; the socket 43 is opened through the column body of the boss 42 to provide an insertion position for the pin 44; the pin 44 can movably penetrate the side wall of the dust cover 41 and the socket 43. When the pin 44 is inserted into the socket 43, the rotation of the boss 42 can be limited, thereby fixing the position of the rotating shaft 332 and the contact assembly 33, realizing the manual locking function, so that the contact assembly 33 remains in the current position, and fixes the bending state and position of the cable 50 in the protective box 31, so as to provide more usage functions in richer usage scenarios.

[0056] like Fig.12 As shown, in some examples, further, the first side wall 3342a and the second side wall 3342b in the latch tooth 3342 have the same inclination direction, both inclined toward the rotating shaft 332; or the first side wall 3342a is inclined toward the rotating shaft 332, and the second side wall 3342b is perpendicular to the horizontal seat 3341.

[0057] It can be understood that when the first side wall 3342a and the second side wall 3342b have the same inclination direction and are both inclined toward the side of the rotating shaft 332, or when the first side wall 3342a is both inclined toward the side of the rotating shaft 332 and the second side wall 3342b is perpendicular to the horizontal seat 3341, this structure, when cooperated with the card plate 342 in the one-way limit assembly 34, enables the card tooth 3342 to be relatively smoothly connected to the card plate 342, and after the connection, when the cable 50 is subjected to an outward pulling force, the inclined side wall of the card tooth 3342 can provide a certain resistance to prevent the card tooth 3342 from easily detaching from the card plate 342, thereby effectively maintaining the bending state of the cable 50, ensuring that the cable 50 moves stably into the distribution box 10, and avoiding unstable connection or displacement of the cable 50 due to external interference.

[0058] like Fig.13As shown, in some examples, further, a direction maintaining elastic seat is also provided in the one-way limit seat 341 , and the direction maintaining elastic seat includes an elastic sheet 60 , and the elastic sheet 60 is used to keep the abutment block 333 always having the power to turn to the side of the card plate 342 .

[0059] It is understandable that a direction-maintaining elastic seat is provided in the one-way limit seat 341, and the role of the elastic sheet 60 in the direction-maintaining elastic seat is to provide the abutment block 333 with power to always turn to the side of the clamping plate 342. When the cable 50 moves into the distribution box 10, the elastic force of the elastic sheet 60 enables the abutment block 333 to be in close contact with the cable 50 and maintain the direction toward the clamping plate 342, ensuring that the cable 50 can smoothly form a bending state. When the cable 50 is subjected to an external force and tends to move away from the distribution box 10, the elastic force of the elastic sheet 60 still exists, and it will resist this external force to a certain extent. Similarly, it will also make the cable 50 return to the default locking position (that is, the clamping tooth 3342 enters the clamping plate 342) after releasing the displacement compensation.

[0060] like Figure 1 , Figure 5 and Figure 6 As shown, in some examples, further, the electrical bridge 20 includes a narrow section 21 and a transition section 22 , the transition section 22 is connected to the protection box 31 , and the narrow section 21 is connected to the other end of the transition section 22 .

[0061] In this example, the narrow section 21 of the electrical bridge 20 is mainly used to accommodate and guide the direction of wires and cables. The narrow section 21 is designed to adapt to a specific installation space or reduce material costs, etc.; the transition section 22 connects the protection box 31 and the narrow section 21, and serves as a transition connection; in the working principle and process, the wires and cables are initially guided and concentrated from a distance through the narrow section 21, and then pass through the transition section 22 into the protection box 31 connected to the distribution box 10; the transition section 22 can make the connection of the cable 50 from the narrow section 21 to the protection box 31 smoother, reduce stress concentration and wear of the cable 50 at the connection, arrange it in an orderly manner, and be able to better dock with the protection box 31, providing a strong guarantee for the normal operation of the electrical system.

[0062] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A protective device for electric wires and cables in an electrical bridge entering a distribution box, comprising a distribution box (10) and an electrical bridge (20) connected to the outside of the distribution box (10), characterized in that: Also includes: A protection mechanism (30) is arranged between the electrical bridge (20) and the distribution box (10); The protection mechanism (30) comprises a protection box (31), and further comprises: A plurality of limiting plates (32), each two forming a group, are fixedly arranged in a horizontal state in the inner cavity of the protection box (31), and a space for accommodating the curved cable (50) is formed between the two limiting plates (32); A contact component (33) capable of moving in a linear direction, penetrating all of the limiting plates (32), and contacting the cable (50); a one-way limit assembly (34) disposed at the upper and lower ends of the protection box (31), wherein both ends of the contact assembly (33) extend into the one-way limit assembly (34) and are used to keep the cable (50) bent when the cable (50) moves into the distribution box (10), and to release the bent cable (50) to provide displacement compensation when the cable (50) moves away from the distribution box (10); The distribution box (10) is also provided with: A box plate (11) is attached to the side of the protection box (31); A box entry hole (12) is formed on the box plate (11), and a plurality of cables (50) pass through the box entry hole (12); the box entry hole (12) and the electrical bridge (20) are located on one side of the inner cavity of the protection box (31); and the contact assembly (33) is located on the other side of the inner cavity of the protection box (31), so as to form a curved shape of the cables (50); The contact component (33) comprises: A moving rod (331) is vertically disposed and passes through all the limiting plates (32); the moving rod (331) can move linearly along the length direction of the limiting plates (32); and a notch is formed on the rod body of the moving rod (331) inside each group of limiting plates (32); A rotating shaft (332) is rotatably disposed in the inner cavity of the moving rod (331) and passes through all of the notches; At least one abutment block (333) is fixedly sleeved on the outer wall of the rotating shaft (332) and is located in the notch of the moving rod (331), the abutment block (333) facing the side away from the box inlet hole (12) and the electrical bridge (20); the number of the abutment blocks (333) is equal to the number of the cables (50), and they correspond one to one; One-way limit blocks (334) are fixedly arranged at two ends of the rotating shaft (332); the one-way limit blocks (334) can be snap-fitted into the one-way limit assembly (34).

2. The protective device for electric wires and cables in an electrical bridge entering a distribution box according to claim 1, characterized in that: The one-way limiting component (34) comprises: One-way limiting seats (341) are fixedly arranged at two ends of the inner cavity of the protection box (31) and sleeved on the outer side of the one-way limiting block (334); A clamping plate (342) is arranged in the one-way limiting seat (341) and corresponds to the position of the one-way limiting block (334); the clamping plate (342) is located on one side of the distribution box (10); A slide rail (343) is arranged in the one-way limiting seat (341), and the slide rail (343) is located on one side of the electrical bridge (20); The elastic abutment rod (344) is fixed in the one-way limiting seat (341), and the telescopic end of the elastic abutment rod (344) abuts against the contact assembly (33).

3. The protection device for electric wires and cables in an electrical bridge entering a distribution box according to claim 2, characterized in that: An abutment groove (3331) is provided on the inner wall of the abutment block (333), so that the portion of the cable (50) located in the abutment groove (3331) forms a bent section (51), wherein the middle portion of the abutment groove (3331) is a straight section (3331a), and a first arc section (3331b) and a second arc section (3331c) protruding in the middle are respectively provided at both ends of the straight section (3331a), the first arc section (3331b) is located between the distribution box (10) and the straight section (3331a), and the second arc section (3331c) is located between the electrical bridge (20) and the straight section (3331a).

4. The protection device for electric wires and cables in an electrical bridge entering a distribution box according to claim 2, characterized in that: The one-way limit block (334) comprises: A horizontal seat (3341) is fixedly disposed at the end of the rotating shaft (332) and extends outward from the center of the rotating shaft (332) in a horizontal direction; A plurality of latching teeth (3342) are fixedly arranged on the side wall of the horizontal seat (3341) and are latched on the latching plate (342); The roller (3343) is arranged on the other side wall of the horizontal seat (3341) and can move onto the slide rail (343).

5. The protection device for electric wires and cables in an electrical bridge entering a distribution box according to claim 4, characterized in that: The protection box (31) is also provided with a manual limiting mechanism (40), and the manual limiting mechanism (40) comprises: A dust cover (41) fixedly mounted on the outer wall of the protection box (31); A convex column (42) fixedly connected to the end of the rotating shaft (332), the convex column (42) being movably disposed in the inner cavity of the dust cover (41); An insertion hole (43) is formed through the shaft of the protruding column (42); A latch pin (44) is movably inserted through the side wall of the dust cover (41) and the insertion hole (43).

6. The protection device for electric wires and cables in an electrical bridge entering a distribution box according to claim 4, characterized in that: The first side wall (3342a) and the second side wall (3342b) in the latching tooth (3342) have the same inclination direction, both inclining towards the rotating shaft (332); or The first side walls (3342a) are all inclined toward the rotating shaft (332), and the second side walls (3342b) are perpendicular to the horizontal seat (3341).

7. The protection device for electric wires and cables in an electrical bridge entering a distribution box according to claim 4, characterized in that: A direction-maintaining elastic seat is also provided in the one-way limiting seat (341), and the direction-maintaining elastic seat comprises an elastic sheet (60). The elastic sheet (60) is used to maintain the abutment block (333) so that it always has the power to turn to the side of the card plate (342).

8. The protective device for electric wires and cables in an electrical bridge entering a distribution box according to claim 1, characterized in that: The electrical bridge (20) comprises a narrow section (21) and a transition section (22), wherein the transition section (22) is connected to the protection box (31), and the narrow section (21) is connected to the other end of the transition section (22).

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