Cable waterproof junction box

Abstract

The utility model provides a cable waterproof junction box, which belongs to the technical field of cable wiring, and comprises a box body, a sealing cover, tension and compression fixing assemblies, a sealing mechanism and a wiring mechanism, the tension and compression fixing assemblies are positioned at two ends of the box body and are used for fixing insulating layer sections of incoming and outgoing cables, and the sealing mechanism is used for sealing the sealing cover. The pulling and pressing fixing assembly comprises a pulling and pressing sleeve, an adjusting screw rod and a fixing base, the pulling and pressing sleeve comprises an inner sleeve and an outer sleeve, the inner sleeve is arranged in the outer sleeve and is in sliding connection with the outer sleeve, multiple sets of guide grooves are formed in the inner wall of the inner sleeve, elastic clamping pieces are arranged in the guide grooves, and the elastic clamping pieces are connected with the adjusting screw rod. The elastic clamping piece is used for continuously providing internal clamping force when a cable is subjected to external tension, the sealing mechanism comprises a box body sealing gasket and a bunch sealing ring, and the wiring mechanism comprises a wiring terminal strip and an insulating partition plate; according to the utility model, the problem of loosening of the cable and the junction box caused by pulling of external factors can be solved.

Description

Technical Field

[0001] This utility model belongs to the field of cable wiring technology, and specifically relates to a waterproof cable junction box. Background Technology

[0002] Cable junction boxes are key components for ensuring stable power transmission and signal connections. With the continuous development of infrastructure such as power systems and communication networks, the performance requirements for cable junction boxes are becoming increasingly stringent.

[0003] Traditional cable junction boxes are susceptible to moisture seepage into the box through gaps between the cable sheath and the junction box in humid environments or when exposed to rain, causing corrosion and short circuits to internal electrical components. Cable fixing often employs simple methods, such as securing cables solely with bolts and terminals. This fixing method is prone to loosening when cables are subjected to significant external tension or displaced due to environmental factors (such as dragging, tripping, or wind vibration from external hanging devices). Loose cables lead to increased contact resistance, resulting in overheating, increased power loss, and in severe cases, even open or short circuits, affecting the normal operation of the entire electrical system. Furthermore, re-tightening cables often requires complex procedures, consuming significant manpower and time. Utility Model Content

[0004] In view of this, the present invention provides a waterproof cable junction box that can solve the problem of cable loosening due to external pulling.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a waterproof cable junction box, comprising a box body, a sealing cover, a tension-compression fixing assembly, a sealing mechanism, and a wiring mechanism. The tension-compression fixing assembly is located at both ends of the box body and is used to fix the insulation layer of the incoming and outgoing cables. The tension-compression fixing assembly includes a tension sleeve, an adjusting screw, and a fixing seat. The tension sleeve includes an inner sleeve and an outer sleeve. The inner sleeve is disposed inside the outer sleeve and is slidably connected to the outer sleeve. The inner wall of the inner sleeve has multiple sets of guide grooves, and elastic clips are disposed inside the guide grooves. The elastic clips are used to continuously provide internal clamping force when the cable is subjected to external tension. The sealing mechanism includes a box body sealing gasket and a cable harness sealing ring. The wiring mechanism includes a terminal block and an insulating partition.

[0007] The technical advantages of this waterproof cable junction box are as follows: By setting up a tension-compression fixing component, the inner sleeve and outer sleeve of the tension-compression sleeve are used to fix the insulation layer of the cable, preventing external pulling from causing the connection between the cable and the terminal block to detach, further increasing the stability of the wiring and improving the stability of the junction box in the external environment; by adjusting the distance between the adjusting screw and the baffle, the position of the inner sleeve inside the outer sleeve can be adjusted, thereby adjusting the clamping degree of the elastic clip on the cable. When the cable is subjected to external tension, the elastic clip can further increase the clamping force between it and the cable, keeping it stable; by setting up a first contact part for contacting the surface of the cable insulation layer when the cable is inserted, and a second contact part for adjusting the adjusting screw outward or increasing the contact area between the elastic clip and the cable surface when the cable is subjected to external pulling, thereby increasing the resistance, and relying on the deformation of the elastic clip to further increase the wire binding force, keeping the wiring stable.

[0008] Based on the above technical solution, the waterproof cable junction box of this utility model can be further improved as follows:

[0009] The bottom ends of the outer sleeve are fixedly connected to the inner wall of the box body via connecting ears.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting connecting ears, it is used to fix the outer sleeve and the box body.

[0011] Furthermore, a baffle is fixedly connected to the outer wall of the outer sleeve, and a groove is provided on the outer sleeve near the baffle.

[0012] Furthermore, the inner sleeve is fixedly connected to the fixed seat through a groove, and the inner sleeve is slidably connected to the fixed seat at the position corresponding to the groove.

[0013] Furthermore, the adjusting screw includes a screw end and a nut end, and a threaded hole is provided through the fixed base. The screw end passes through the threaded hole and contacts the baffle. The adjusting screw is used to adjust the position of the inner sleeve inside the outer sleeve.

[0014] Furthermore, the elastic clip is S-shaped, and the top end of the elastic clip is fixedly connected to the inner wall of the guide groove.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting the S-shaped elastic clip, the elastic clip can uniformly contract towards the center when squeezed by the inner sleeve, thereby stably clamping the cable; compared with the traditional flat clip, the S-hook clip increases the contact area and fit with the cable.

[0016] Furthermore, the end of the elastic clip that contacts the cable includes a first contact portion and a second contact portion, both of which are provided with contact points.

[0017] Furthermore, the contact point is a protruding protrusion, and the surface of the protrusion is covered with a rubber layer.

[0018] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting a rubber layer on the contact surface, the friction between the elastic clip and the cable surface is increased, thereby improving the wire fixation.

[0019] Furthermore, the number of contacts on the first contact portion is less than the number of contacts on the second contact portion.

[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the number of contacts on the first contact part is less than the number of contacts on the second contact part. This differentiated design allows for more precise distribution of friction force according to the force characteristics and movement trend of the cable when clamping the cable, further enhancing the reliability of cable fixation; when the cable is subjected to external tension, the elastic clip can continuously provide internal clamping force, and as the tension increases, the clamping force of the clip will increase accordingly, effectively preventing the connection point between the cable and the terminal block from falling off.

[0021] Furthermore, the box body and the sealing cover are respectively provided with cable bundling grooves on both sides, and the cable bundling sealing ring is disposed in the cable bundling groove for sealing the cable entry end surface.

[0022] Compared with existing technologies, the beneficial effects of the waterproof cable junction box provided by this utility model are as follows: By setting up a tension and compression fixing component, the inner sleeve and outer sleeve of the tension and compression sleeve are used to fix the insulation layer of the cable, preventing external pulling from causing the connection between the cable and the terminal block to fall off, further increasing the stability of the wiring and improving the stability of the junction box in the external environment; by adjusting the distance between the adjusting screw and the baffle, the position of the inner sleeve inside the outer sleeve can be adjusted, thereby adjusting the clamping degree of the elastic clip on the cable. When the cable is subjected to external tension, the elastic clip can further increase the clamping force between it and the cable, keeping it stable; by setting up a first contact part for contacting the surface of the cable insulation layer when the cable is inserted, and by setting up a second contact part for adjusting the adjusting screw outward or when the cable is subjected to external pulling, the contact area between the elastic clip and the cable surface is increased, thereby increasing the resistance, and the deformation of the elastic clip further increases the wire binding force, keeping the wiring stable. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of a waterproof cable junction box;

[0025] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 10. Box body; 11. Sealing cover; 12. Tension and compression fixing assembly; 121. Tension and compression sleeve; 1211. Inner sleeve; 1212. Outer sleeve; 1213. Guide groove; 1214. Baffle; 122. Elastic clip; 1221. First contact part; 1222. Second contact part; 123. Adjusting screw; 124. Fixing base; 13. Box body sealing gasket; 14. Wire harness sealing ring; 15. Terminal block; 16. Insulating partition. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0029] like Figure 1 Figure 2 shows an embodiment of a waterproof cable junction box provided by this utility model. In this embodiment, it includes a box body 10, a sealing cover 11, a tension and compression fixing assembly 12, a sealing mechanism, and a wiring mechanism. The tension and compression fixing assembly 12 is located at both ends of the box body 10 and is used to fix the insulation layer of the incoming and outgoing cables. The tension and compression fixing assembly 12 includes a tension and compression sleeve 121, an adjusting screw 123, and a fixing seat 124. The tension and compression sleeve 121 includes an inner sleeve 1211 and an outer sleeve 1212. The inner sleeve 1211 is disposed inside the outer sleeve 1212 and is slidably connected to the outer sleeve 1212. Multiple sets of guide grooves 1213 are opened on the inner wall of the inner sleeve 1211. An elastic clamp 122 is disposed inside the guide groove 1213. The elastic clamp 122 is used to continuously provide internal clamping force when the cable is subjected to external tension. The sealing mechanism includes a box body sealing gasket 13 and a cable tie sealing ring 14. The wiring mechanism includes a terminal block 15 and an insulating partition 16.

[0030] In use, first align one end of the cable with the inlet of the tension sleeve 121 of the tension fixing assembly 12 at one end of the housing 10. At this time, the contact point on the first contact part 1221 of the inner sleeve 1211 contacts the outer surface of the cable. Push the cable to pass through the inner sleeve 1211 until the cable connection end can reach the terminal block 15. Fix the cable connection with the bolts on the terminal block 15. Next, operate the adjusting screw 123 according to the required fixing tightness of the cable. Rotate the adjusting screw 123 so that its screw end passes through the threaded hole of the fixing seat 124. Contacting the baffle 1214 of the outer sleeve 1212, the inner sleeve 1211 is pushed to move along the slide groove inside the outer sleeve 1212; during the movement of the inner sleeve 1211, the guide groove 1213 on its inner wall guides the S-hook-shaped elastic clip 122 to contract inward, so that the contact point with the rubber layer on the second contact part 1222 on the elastic clip 122 gradually comes into close contact with the cable insulation layer. The cable is firmly fixed by the friction of the rubber layer and the contraction force of the elastic clip 122, and the elastic clip can further contract to prevent the cable from falling off when the external tension increases.

[0031] In the above technical solution, the bottom ends of the outer sleeve 1212 are fixedly connected to the inner wall of the box body 10 through connecting ears.

[0032] Furthermore, in the above technical solution, a baffle 1214 is fixedly connected to the outer wall of the outer sleeve 1212, and a groove is provided on the outer sleeve 1212 near the baffle 1214.

[0033] Furthermore, in the above technical solution, the inner sleeve 1211 is fixedly connected to the fixed seat 124 through the groove, and the inner sleeve 1211 is slidably connected to the fixed seat 124 through the corresponding sliding groove position.

[0034] Furthermore, in the above technical solution, the adjusting screw 123 includes a screw end and a nut end, and a threaded hole is provided through the fixing seat 124. The screw end passes through the threaded hole and contacts the baffle 1214. The adjusting screw 123 is used to adjust the position of the inner sleeve 1211 inside the outer sleeve 1212.

[0035] Furthermore, in the above technical solution, the elastic clip 122 is S-shaped, and the top end of the elastic clip 122 is fixedly connected to the inner wall of the guide groove 1213.

[0036] Furthermore, in the above technical solution, the end of the elastic clip 122 that contacts the cable includes a first contact portion 1221 and a second contact portion 1222, and both the first contact portion 1221 and the second contact portion 1222 are provided with contacts.

[0037] Furthermore, in the above technical solution, the contact point is a protruding protrusion, and the surface of the protrusion is covered with a rubber layer.

[0038] Furthermore, in the above technical solution, the number of contacts on the first contact portion 1221 is less than the number of contacts on the second contact portion 1222.

[0039] Furthermore, in the above technical solution, the box body 10 and the sealing cover 11 are respectively provided with cable bundling grooves on both sides, and the cable bundling sealing ring 14 is set in the cable bundling groove to seal the cable entry end surface.

[0040] The cable harness sealing ring 14 includes an upper sealing part and a lower sealing part. The upper sealing part is set in accordance with the cable harness groove on the sealing cover 11, and the lower sealing part is set in accordance with the cable harness groove on the box body 10. When the sealing cover 11 is closed back onto the box body 10, the upper and lower parts of the cable harness sealing ring 14 are used to seal the cable.

[0041] Specifically, the principle of this utility model is as follows: In use, firstly, align one end of the cable with the inlet of the tension sleeve 121 of the tension fixing assembly 12 at one end of the housing 10. At this time, the contact point on the first contact part 1221 of the inner sleeve 1211 contacts the outer surface of the cable, pushing the cable through the inner sleeve 1211 until the cable connection end can reach the terminal block 15. The cable is then fixed and connected by bolts on the terminal block 15. Next, adjust the screw 123 according to the required cable tightness. Rotate the adjusting screw 123 so that its screw end passes through the fixing assembly 121. The threaded hole of the seat 124 contacts the baffle 1214 of the outer sleeve 1212, pushing the inner sleeve 1211 to move along the slide groove inside the outer sleeve 1212. During the movement of the inner sleeve 1211, the guide groove 1213 on its inner wall guides the S-hook-shaped elastic clip 122 to contract inward, so that the contact point with the rubber layer on the second contact part 1222 on the elastic clip 122 gradually comes into close contact with the cable insulation layer. The cable is firmly fixed by the friction of the rubber layer and the contraction force of the elastic clip 122. When the external tension increases, the elastic clip can further contract to prevent the cable from falling off.

Claims

1. A waterproof cable junction box, characterized in that, The device includes a housing (10), a sealing cover (11), a tension-compression fixing assembly (12), a sealing mechanism, and a wiring mechanism. The tension-compression fixing assembly (12) is located at both ends of the housing (10) and is used to fix the insulation layer of the incoming and outgoing cables. The tension-compression fixing assembly (12) includes a tension-compression sleeve (121), an adjusting screw (123), and a fixing seat (124). The tension-compression sleeve (121) includes an inner sleeve (1211) and an outer sleeve (1212). The inner sleeve (1211) is disposed on the outer sleeve. The sleeve (1212) is slidably connected to the outer sleeve (1212). The inner wall of the inner sleeve (1211) has multiple sets of guide grooves (1213). The guide grooves (1213) are provided with elastic clips (122). The elastic clips (122) are used to continuously provide internal clamping force when the cable is subjected to external tension. The sealing mechanism includes a housing sealing gasket (13) and a wire harness sealing ring (14). The wiring mechanism includes a terminal block (15) and an insulating partition (16).

2. The waterproof cable junction box according to claim 1, characterized in that, The bottom ends of the outer sleeve (1212) are fixedly connected to the inner wall of the box body (10) via connecting ears.

3. A waterproof cable junction box according to claim 2, characterized in that, A baffle (1214) is fixedly connected to the outer wall of the outer sleeve (1212), and a sliding groove is provided on the outer sleeve (1212) near the baffle (1214).

4. A waterproof cable junction box according to claim 3, characterized in that, The inner sleeve (1211) is fixedly connected to the fixed seat (124) through a groove, and the inner sleeve (1211) is slidably connected to the fixed seat (124) corresponding to the position of the groove.

5. A waterproof cable junction box according to claim 4, characterized in that, The adjusting screw (123) includes a screw end and a nut end. A threaded hole is provided through the fixed seat (124). The screw end passes through the threaded hole and contacts the baffle (1214). The adjusting screw (123) is used to adjust the position of the inner sleeve (1211) inside the outer sleeve (1212).

6. A waterproof cable junction box according to claim 5, characterized in that, The elastic clip (122) is S-shaped, and the top end of the elastic clip (122) is fixedly connected to the inner wall of the guide groove (1213).

7. A waterproof cable junction box according to claim 6, characterized in that, The end of the elastic clip (122) that contacts the cable includes a first contact portion (1221) and a second contact portion (1222), and both the first contact portion (1221) and the second contact portion (1222) are provided with contacts.

8. A waterproof cable junction box according to claim 7, characterized in that, The contact point is a protruding protrusion, and the surface of the protrusion is covered with a rubber layer.

9. A waterproof cable junction box according to claim 8, characterized in that, The number of contacts on the first contact portion (1221) is less than the number of contacts on the second contact portion (1222).

10. A waterproof cable junction box according to claim 9, characterized in that, The box body (10) and the sealing cover (11) are respectively provided with wire harness grooves on both sides. The wire harness sealing ring (14) is set in the wire harness groove to seal the surface of the cable entering the box.

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