Junction box with anti-pulling function

Abstract

The utility model discloses a junction box with an anti-pulling function, which comprises a shell and an end cover fixed at the top of the shell, terminal strips are arranged at the upper part and the lower part in the shell in a staggered manner, the terminal strips are provided with a plurality of wire fixing holes at equal intervals, a supporting seat is also arranged in the shell, and the supporting seat is provided with a plurality of wire fixing holes at equal intervals. The supporting seat is provided with a bearing groove corresponding to the wire fixing hole and arranged at an inlet of the wire fixing hole, the end cover is provided with an ejector rod capable of moving up and down, the end face of the ejector rod is provided with a pressing plate, and the ejector rod is provided with a spring and abuts against the end cover so that the pressing plate can abut against the interior of the bearing groove. According to the utility model, each bearing groove corresponds to one pressing plate, and the wire is ensured to be fixed on the bearing groove according to the diameter of the insulating layer of the wire, so that the problem of loose connection between the wire and the terminal strip caused by pulling is prevented, and the product has the advantages of stable connection, pulling prevention, convenience in operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a junction box with an anti-pull function. Background Art

[0002] The junction box is the terminal of the distribution cable or optical cable, connecting the distribution cable or optical cable and the user line part, and branching the main line, which plays an important role. The junction box can be installed in small spaces such as bridges, boxes, pipes, cable trenches, etc., does not occupy the effective use area of ​​the building, is easy to install, and does not require cutting the main cable.

[0003] In the prior art, bolts, screws and other fasteners are often used to position and connect the various components inside the junction box, and the wires need to be installed on the conductive bus of the junction box using bolts, screws and other fasteners. When the wires are pulled, the connection with the conductive bus is easily loosened, resulting in poor contact, increased contact resistance, and abnormal high temperature. Therefore, the applicant has made a useful design and found a solution to the above-mentioned problem. The technical solution to be introduced below was produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional junction box design and provide a product with stable connection, anti-pulling and convenient operation.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A junction box with an anti-pulling function comprises a shell and an end cover fixed on the top of the shell, wherein terminal rows are arranged at the upper and lower parts of the shell and are staggered, and the terminal row is provided with a plurality of wire fixing holes with equal spacing, and a support seat is also provided in the shell and abuts the terminal row, and the support seat is provided with a bearing groove corresponding to the wire fixing hole and is arranged at the entrance of the wire fixing hole, and the end cover is provided with a push rod that can move up and down, and a pressure plate is provided on the end face of the push rod, and the push rod is provided with a spring and abuts the end cover so that the pressure plate abuts the bearing groove.

[0007] Preferably, a fixing groove is provided on the inner wall of the shell, the fixing groove is provided with a first threaded hole, clearance grooves are provided on both sides of the shell, the clearance grooves are provided with a second threaded hole, a support plate is provided below the fixing groove, the support plate is provided with a limiting plate, and is in a vertical relationship with the support plate.

[0008] Preferably, limit blocks are provided on both sides of the end cover and inserted in the clearance grooves, the limit blocks are provided with headless screws and are engaged and connected to the second threaded holes, partitions are provided between the limit blocks and are inserted between the terminal rows, and the end cover is provided with a protective plate and is flush with the front and back of the shell.

[0009] Preferably, the terminal block is inserted into the fixing groove, the wire fixing hole is provided with a fastening screw, and the fastening screws on both sides of the wire fixing hole are engaged and connected with the first threaded hole.

[0010] Preferably, the end cover is provided with a plurality of through holes with equal spacing, and is located on the same axis as the fastening screw, and the through hole is provided with two guide blocks, which are arranged opposite to each other.

[0011] Preferably, the push rod is provided with a limiting groove and is arranged on the guide block, the end surface of the push rod is provided with a baffle, and the push rod is provided with a baffle ring.

[0012] Preferably, the spring abuts against the end surface of the baffle ring and the end cover, providing a downward force for the pressure plate to make the baffle abut against the end cover.

[0013] Preferably, the support seat is provided with an extension block, and is arranged between the support plate and the fixing groove, one side of the support plate abuts against the limiting plate, and the other side of the support plate abuts against the fixing groove.

[0014] Preferably, the material of the pressing plate and the bearing groove is set to be rubber material, and the shape of the pressing plate and the bearing groove is set to be a semicircular arc shape.

[0015] Beneficial effects:

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) In the utility model, each bearing slot corresponds to a pressure plate, and the push rod can be adjusted up and down according to the diameter of the insulation layer of the wire. The spring ensures that the wire is fixed on the bearing slot, thereby preventing the problem of loose connection between the wire and the terminal block due to pulling, so that the product has the advantages of stable connection and anti-pulling.

[0018] (2) The utility model can fix the insulating layer of the wire on the carrier plate by connecting and fixing the end cover to the shell, and through the spring and the push rod that can move up and down, there is no need to worry about the tolerance errors of each carrier plate wall thickness, push rod length, insulation layer of the wire and other components when they cooperate with each other due to the manufacturing process during installation. The spring increases the degree of fit between the pressure plate and the carrier plate, thereby ensuring that the wire is pressed tightly in the carrier groove, making the product easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a junction box with an anti-pull function according to the utility model;

[0020] Figure 2 This is a top view of the internal structure of a shell of a junction box with an anti-pull function according to the utility model;

[0021] Figure 3 It is a schematic diagram of the side cross-sectional structure of a junction box with an anti-pull function according to the utility model;

[0022] Figure 4 This is a schematic structural diagram of an end cover of a junction box with an anti-pull function according to the utility model;

[0023] Figure 5 It is a structural schematic diagram of a top rod of a junction box with an anti-pull function according to the utility model;

[0024] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0025] Figure numerals: 1. Shell; 2. End cover; 3. Terminal block; 4. Support seat; 5. Push rod; 6. Spring; 11. Fixing groove; 12. First threaded hole; 13. Yield groove; 14. Second threaded hole; 15. Support plate; 16. Limit plate; 21. Limit block; 22. Headless screw; 23. Partition; 24. Protective plate; 25. Through hole; 26. Guide block; 31. Wire fixing hole; 32. Fastening screw; 41. Load-bearing groove; 42. Extension block; 51. Pressure plate; 52. Limiting groove; 53. Baffle; 54. Baffle ring. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] Reference example Figures 1 to 5 A junction box with an anti-pull function comprises a shell 1 and an end cover 2 fixed on the top of the shell 1. Terminal rows 3 are arranged at the upper and lower parts of the shell 1 and are staggered. The terminal row 3 is provided with a plurality of equally spaced wire fixing holes 31. A support seat 4 is also provided in the shell 1 and abuts against the terminal row 3. The support seat 4 is provided with a bearing groove 41 corresponding to the wire fixing hole 31 and is arranged at the entrance of the wire fixing hole 31. The end cover 2 is provided with a push rod 5 that can move up and down. A pressure plate 51 is provided on the end surface of the push rod 5. The push rod 5 is provided with a spring 6 and abuts against the end cover 2 so that the pressure plate 51 abuts against the bearing groove 41.

[0029] It is worth mentioning that the inner wall of the shell 1 is provided with a fixing groove 11, the fixing groove 11 is provided with a first threaded hole 12, and the two sides of the shell 1 are provided with a clearance groove 13, the clearance groove 13 is provided with a second threaded hole 14, and a support plate 15 is provided below the fixing groove 11, and the support plate 15 is provided with a limiting plate 16, and is in a vertical relationship with the support plate 15. The fixing groove 11 provides support for the terminal row 3, the first threaded hole 12 is used in conjunction with the fastening screw 32, and the clearance groove 13 provides a positioning function for the end cover 2 to be installed on the shell 1, and the second threaded hole 14 is used in conjunction with the headless screw 22. The support plate 15 provides support for the support seat 4, and the limiting plate 16 limits the left and right movement of the support seat 4 to prevent the loosening of the connection between the wire and the fixed wire hole 31 during the pulling of the wire;

[0030] It is worth mentioning that the end cover 2 is provided with a limit block 21 on both sides and inserted in the clearance groove 13. The limit block 21 is provided with a headless screw 22 and is engaged with the second threaded hole 14. A partition 23 is provided between the limit blocks 21 and inserted between the terminal rows 3. The end cover 2 is provided with a protective plate 24 and is flush with the front and back of the housing 1. The limit block 21 is used in conjunction with the clearance groove 13. The headless screw 22 connects and fixes the end cover 2 to the housing 1. The partition 23 ensures the normal operation of the two terminal rows 3, and the protective plate 24 prevents other personnel from accidentally touching it.

[0031] It is worth mentioning that the terminal block 3 is inserted into the fixing groove 11, and the fixing hole 31 is provided with a fastening screw 32. The fastening screws 32 on both sides of the fixing hole 31 are engaged with the first threaded hole 12. The fastening screws 32 fix the terminal block 3 in the fixing groove 11, and the fixing hole 31 is connected to the exposed part of the wire.

[0032] It is worth mentioning that the end cover 2 is provided with a plurality of through holes 25 at equal intervals and are located on the same axis as the fastening screw 32. The through hole 25 is provided with two guide blocks 26 which are arranged opposite to each other. The through hole 25 provides a guide for the ejector rod 5. The guide blocks 26 prevent the ejector rod 5 from rotating in the axis direction during the upward and downward movement, thereby ensuring that the pressure plate 51 accurately abuts against the bearing groove 41 during the downward movement of the ejector rod 5.

[0033] It is worth mentioning that the top rod 5 is provided with a limiting groove 52 and is arranged on the guide block 26. The end surface of the top rod 5 is provided with a baffle 53. The top rod 5 is provided with a baffle ring 54. The limiting groove 52 is used in conjunction with the guide block 26. The baffle 53 serves to limit the downward movement range of the top plate. The baffle ring 54 is used in conjunction with the spring 6.

[0034] It is worth mentioning that the spring 6 abuts against the end surface of the retaining ring 54 and the end cover 2, providing a downward force for the pressure plate 51, so that the retaining plate 53 abuts against the end cover 2, and the elastic force of the spring 6 is transmitted to the ejector rod 5 through the retaining ring 54;

[0035] It is worth mentioning that the support seat 4 is provided with an extension block 42, and is arranged between the support plate 15 and the fixing groove 11. One side of the support plate 15 abuts against the limit plate 16, and the other side abuts against the fixing groove 11. The support plate 15 and the fixing groove 11 fix the extension block 42.

[0036] It is worth mentioning that the material of the pressure plate 51 and the bearing groove 41 is set to be rubber material, and the shape of the pressure plate 51 and the bearing groove 41 is set to be a semicircular arc shape. The rubber material not only plays an insulating role, but also has a certain flexibility to prevent the insulation layer of the wire from being flattened and damaged. The insulation layer and the rubber material also play a role in increasing friction, thereby strengthening the anti-pulling force of the fixed wire. The semicircular arc shape increases the contact area between the two and better fits the shape of the wire.

[0037] The use principle of the utility model is now described as follows:

[0038] Place the exposed part of the wire in the wire fixing hole 31, place the insulating layer of the wire on the bearing groove 41, tighten the fixing screw 32 to fix the exposed part of the wire, and when all the wires are connected to the terminal block 3, take the end cover 2 and put the limit block 21 into the make way groove 13. At this time, the pressure plate 51 enters the bearing groove 41. As the headless screw 22 is tightened, the end cover 2 is more tightly connected to the shell 1, and the pressure plate 51 abuts against the insulating layer of the wire. According to the diameter of the insulating layer of the wire, the top rod 5 moves upward for a distance, and a distance is generated between the baffle 53 and the end cover 2. The spring 6 releases the elastic force to ensure that the pressure plate 51 tightly fits the wire in the bearing groove 41.

[0039] The above design scheme can enable the product to achieve the advantages of stable connection, anti-pulling and convenient operation.

[0040] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A junction box with an anti-pull function, comprising a housing (1), and an end cover (2) fixed to the top of the housing (1), characterized in that: Terminal blocks (3) are arranged at the upper and lower parts of the shell (1) and are staggered. The terminal block (3) is provided with a plurality of equally spaced wire fixing holes (31). A support seat (4) is also provided in the shell (1) and abuts against the terminal block (3). The support seat (4) is provided with a bearing groove (41) corresponding to the wire fixing hole (31) and is arranged at the entrance of the wire fixing hole (31). The end cover (2) is provided with a push rod (5) that can move up and down. The end surface of the push rod (5) is provided with a pressure plate (51). The push rod (5) is provided with a spring (6) and abuts against the end cover (2) so that the pressure plate (51) abuts against the inside of the bearing groove (41).

2. The junction box with anti-pull function according to claim 1, characterized in that: The inner wall of the shell (1) is provided with a fixing groove (11), the fixing groove (11) is provided with a first threaded hole (12), both sides of the shell (1) are provided with a clearance groove (13), the clearance groove (13) is provided with a second threaded hole (14), a support plate (15) is provided below the fixing groove (11), the support plate (15) is provided with a limiting plate (16), and the limiting plate (16) is in a vertical relationship with the support plate (15).

3. The junction box with anti-pull function according to claim 2, characterized in that: Limit blocks (21) are provided on both sides of the end cover (2) and are inserted into the clearance groove (13); the limit blocks (21) are provided with headless screws (22) and are engaged with the second threaded holes (14); a partition plate (23) is provided between the limit blocks (21) and is inserted between the terminal blocks (3); the end cover (2) is provided with a protective plate (24) and is flush with the front and back sides of the housing (1).

4. The junction box with anti-pulling function according to claim 3 is characterized in that: The terminal block (3) is inserted into the fixing groove (11), the wire fixing hole (31) is provided with a fastening screw (32), and the fastening screws (32) on both sides of the wire fixing hole (31) are engaged and connected with the first threaded hole (12).

5. The junction box with anti-pull function according to claim 4, characterized in that: The end cover (2) is provided with a plurality of through holes (25) at equal intervals and located on the same axis as the fastening screw (32); the through hole (25) is provided with two guide blocks (26) which are arranged opposite to each other.

6. The junction box with anti-pull function according to claim 5, characterized in that: The push rod (5) is provided with a limiting groove (52) and is arranged on the guide block (26); the end surface of the push rod (5) is provided with a baffle (53); and the push rod (5) is provided with a baffle ring (54).

7. The junction box with anti-pull function according to claim 6, characterized in that: The spring (6) abuts against the end surface of the retaining ring (54) and the end cover (2), providing a downward force for the pressure plate (51), so that the retaining plate (53) abuts against the end cover (2).

8. The junction box with anti-pull function according to claim 2, characterized in that: The support seat (4) is provided with an extension block (42) and is arranged between the support plate (15) and the fixing groove (11); one side of the support plate (15) abuts against the limiting plate (16) and the other side abuts against the fixing groove (11).

9. The junction box with anti-pull function according to claim 1, characterized in that: The material of the pressing plate (51) and the bearing groove (41) is set to be a rubber material, and the shape of the pressing plate (51) and the bearing groove (41) is set to be a semicircular arc shape.

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