Quickly-installed lead-free switch junction box
The design of the limit strip and screw post solves the problem of bolt alignment difficulties during the installation of lead-free switch junction boxes, enabling rapid installation and efficient junction box fixing, reducing labor costs and the risk of screw thread damage.
Patent Information
- Application Number
- CN202423274399.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-30
AI Technical Summary
During the installation of lead-free switch junction boxes, the bolts may not be aligned with the screw holes, leading to complicated and time-consuming installation, and may also damage the screw threads.
The design incorporates a limiting strip and a screw-in post structure. The limiting strip is inserted into the limiting groove, and the through hole on the positioning seat aligns quickly with the screw hole of the screw-in post. This, combined with the sealing structure, improves installation efficiency.
It enables rapid installation of lead-free junction boxes, reduces installation time, increases installation speed several times, and reduces labor costs and the risk of thread damage.
Smart Images

Figure CN223828992U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of junction boxes, specifically a lead-free switch junction box that can be installed quickly. Background Technology
[0002] Lead-free switch junction boxes are devices used for electrical connections. Their main characteristic is the strict control of lead usage during manufacturing to meet environmental protection requirements. Lead is a heavy metal harmful to the environment and human health. In traditional junction box manufacturing, if lead is present, it will gradually leach out after the boxes are discarded, polluting soil and water sources. Lead-free manufacturing effectively reduces this pollution and lowers the risk of ecological damage. Lead-free switch junction boxes are commonly used for wiring connections in various electrical devices, such as in household circuits and industrial control circuits, to safely and systematically connect wires and electrical components like switches.
[0003] When installing lead-free switch junction boxes, installers need to spend more time adjusting the bolt position to ensure smooth insertion into the bolt holes if the bolts cannot be aligned. This makes the entire installation process cumbersome and time-consuming. Excessive adjustment of the bolt position during installation may damage the thread. Therefore, there is an urgent need for a quick-installation lead-free switch junction box to solve the above-mentioned defects. Utility Model Content
[0004] The purpose of this invention is to provide a quick-installation lead-free switch junction box to address the deficiencies mentioned in the background section.
[0005] To achieve the above objectives, a quick-installation lead-free switch junction box is provided, comprising a lead-free junction box, a top cover mounted on the top of the lead-free junction box, a sealing seat fixedly mounted at the bottom of the top cover, a fixing seat fixedly mounted on the inner wall of the lead-free junction box, a positioning seat mounted on the bottom of the lead-free junction box, a mounting plate covering the bottom of the lead-free junction box, a positioning pad fixedly mounted on the surface of the mounting plate, a screw post fixedly mounted on one side of the positioning pad, and a screw hole opened inside the screw post, limit grooves opened on both sides of the surface of the positioning pad, and limit strips fixedly mounted on both sides of the bottom of the lead-free junction box, the limit strips being inserted into the inside of the limit grooves, and a side opening groove opened on the outer wall of the lead-free junction box.
[0006] Preferably, a sealing seat is fixedly installed at the bottom of the top cover, and a sealing port is opened on the upper side of the inside of the lead-free junction box. At the same time, the size of the sealing seat and the sealing port are matched, and the sealing seat is inserted into the inside of the sealing port. Force grooves are opened on both sides of the surface of the top cover.
[0007] Preferably, a sealing strip is fixedly provided on the outer surface of the sealing seat, and the sealing seat is inserted into the inside of the sealing port and sealed by the sealing strip.
[0008] Preferably, the surface of the top cover is evenly provided with four sets of through holes, and the inside of the lead-free junction box is fixedly provided with four sets of fixing seats. The surface of each of the four sets of fixing seats is provided with screw holes, and the four sets of screw holes are connected to the four sets of through holes on the surface of the top cover. At the same time, the surface of each of the four sets of through holes is covered with a sealing ring.
[0009] Preferably, the fixing bolt passes through the through hole in the top cover and is screwed into the screw hole in the surface of the fixing seat, and the fixing bolt passes through the sealing ring. At the same time, the surface area of the lead-free junction box is the same as the surface area of the top cover.
[0010] Preferably, the lead-free junction box has two sets of positioning seats on its outer bottom, and the two sets of positioning seats are arranged diagonally. At the same time, the fixing bolt passes through the through hole opened on the positioning seat and is screwed and fixed inside the screw hole opened on the surface of the screw post.
[0011] Preferably, the mounting plate has slots on both sides of its surface, and the mounting plate has diagonally distributed screw posts fixedly installed on its surface. The screw posts are at the same height as the positioning pad, and the positioning pad has a "U" shaped cross-section. The limiting strip and the limiting groove both have dovetail-shaped cross-sections.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention allows for the handheld installation of a lead-free junction box. Two sets of limiting strips at the bottom of the junction box are inserted into the limiting grooves on both sides of the positioning pad. This ensures quick and accurate alignment between the through holes on the two positioning seats and the screw holes on the two screw posts. This facilitates the fixing of the lead-free junction box onto the mounting plate, allowing installers to quickly insert and tighten the bolts. It is particularly suitable for building electrical systems involving numerous junction box installations, where skilled workers can complete the installation of multiple junction boxes in a short time, potentially increasing installation speed several times compared to systems without a positioning device. This helps shorten the overall project duration, reduce labor costs, and prevents damage to the screw threads. Attached Figure Description
[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model;
[0015] Figure 2 for Figure 1 A bottom view;
[0016] Figure 3 for Figure 1 Top view;
[0017] Figure 4 This is a schematic diagram of the top cover;
[0018] Figure 5 for Figure 1 A sectional view.
[0019] The following are the labels in the diagram: 1. Top cover; 11. Sealing seat; 111. Sealing strip; 2. Force groove; 3. Sealing ring; 4. Lead-free junction box; 41. Limiting strip; 5. Fixing seat; 6. Side slot; 7. Positioning seat; 8. Mounting plate; 81. Positioning pad; 82. Limiting groove; 83. Screw-on post; 84. Slot. Detailed Implementation
[0020] Please see Figure 1-5 This utility model provides a quick-installation lead-free switch junction box, including a lead-free junction box 4. A top cover 1 is installed on the top of the lead-free junction box 4, and a sealing seat 11 is fixedly installed at the bottom of the top cover 1. A fixing seat 5 is fixedly installed on the inner wall of the lead-free junction box 4, and a positioning seat 7 is installed at the bottom of the lead-free junction box 4. The bottom of the lead-free junction box 4 is covered by a mounting plate 8, and a positioning pad 81 is fixedly installed on the surface of the mounting plate 8. A screw post 83 is fixedly installed on one side of the positioning pad 81, and a screw hole is opened inside the screw post 83. Limit grooves 82 are opened on both sides of the surface of the positioning pad 81, and limit strips 41 are fixedly installed on both sides of the bottom of the lead-free junction box 4. The limit strips 41 are inserted into the inside of the limit grooves 82. A side slot 6 is opened on the outer wall of the lead-free junction box 4.
[0021] Working principle: During use, hold the top cover 1. The bottom of the top cover 1 is inserted into the sealing port on the surface of the lead-free junction box 4 through the sealing seat 11. The sealing seat 11 is inserted into the sealing port and sealed by the sealing strip 111, improving the waterproof rating of the device. At the same time, the mounting plate 8 is fixedly set in the target position of the junction box through the slot 84. Holding the lead-free junction box 4, insert the two sets of limiting strips 41 at the bottom of the lead-free junction box 4 into the limiting grooves 82 on both sides of the positioning pad 81. At this time, the through holes on the two sets of positioning seats 7 and the screws on the surfaces of the two sets of screw posts 83 are connected. The holes allow for quick and accurate alignment; they facilitate the secure mounting of lead-free junction boxes 4 onto the mounting plate 8, allowing installers to quickly insert and tighten bolts; they are particularly well-suited for building electrical systems involving numerous junction box installations, where skilled workers can complete the installation of multiple junction boxes in a short time, potentially increasing installation speed several times compared to systems without positioning devices; they help shorten the overall project timeline and reduce labor costs; they reduce the probability of installation errors caused by misalignment of bolts and bolt holes; and installers do not need to spend a lot of time and effort repeatedly adjusting bolt positions, while also avoiding damage to the thread.
[0022] In a preferred embodiment, a sealing seat 11 is fixedly installed at the bottom of the top cover 1, and a sealing opening is provided on the upper side of the inside of the lead-free junction box 4. At the same time, the size of the sealing seat 11 is matched with that of the sealing opening, and the sealing seat 11 is inserted into the inside of the sealing opening. Force grooves 2 are provided on both sides of the surface of the top cover 1.
[0023] A sealing strip 111 is fixedly provided on the outer surface of the sealing seat 11, and the sealing seat 11 is inserted into the inside of the sealing port and sealed by the sealing strip 111.
[0024] In a preferred embodiment, four sets of perforations are evenly provided on the surface of the top cover 1, and four sets of fixing seats 5 are fixedly provided inside the lead-free junction box 4. Each of the four sets of fixing seats 5 has screw holes on its surface, and the four sets of screw holes are connected to the four sets of perforations on the surface of the top cover 1. At the same time, the surface of each of the four sets of perforations is covered with a sealing ring 3.
[0025] The fixing bolt passes through the through hole opened on the top cover 1 and is screwed into the screw hole opened on the surface of the fixing seat 5. The fixing bolt is also set through the sealing ring 3. At the same time, the surface area of the lead-free junction box 4 is the same as the surface area of the top cover 1.
[0026] As a preferred embodiment, the bottom outer side of the lead-free junction box 4 is provided with two sets of positioning seats 7, and the two sets of positioning seats 7 are arranged diagonally. At the same time, the fixing bolt passes through the through hole opened on the positioning seat 7 and is screwed and fixed inside the screw hole opened on the surface of the screw post 83.
[0027] The mounting plate 8 has slots 84 on both sides of its surface, and the mounting plate 8 has screw posts 83 arranged diagonally on its surface. The screw posts 83 are at the same height as the positioning pad 81, and the positioning pad 81 has a "U" shaped cross section. The limit strip 41 and the limit groove 82 both have dovetail-shaped cross sections.
Claims
1. A quick-installation lead-free switch junction box, comprising a lead-free junction box (4), characterized in that: The top of the lead-free junction box (4) is equipped with a top cover (1), and a sealing seat (11) is fixedly installed at the bottom of the top cover (1). At the same time, a fixing seat (5) is fixedly installed on the inner wall of the lead-free junction box (4), and a positioning seat (7) is installed at the bottom of the lead-free junction box (4). The bottom of the lead-free junction box (4) is covered with a mounting plate (8), and a positioning pad (81) is fixedly installed on the surface of the mounting plate (8). At the same time, a screw post (83) is fixedly installed on one side of the positioning pad (81), and a screw hole is opened inside the screw post (83). Limit grooves (82) are opened on both sides of the surface of the positioning pad (81), and limit strips (41) are fixedly installed on both sides of the bottom of the lead-free junction box (4). The limit strips (41) are inserted into the inside of the limit grooves (82), and a side opening groove (6) is opened on the outer wall of the lead-free junction box (4).
2. The quick-installation lead-free switch junction box according to claim 1, characterized in that: A sealing seat (11) is fixedly installed at the bottom of the top cover (1), and a sealing port is opened on the upper side of the lead-free junction box (4). At the same time, the size of the sealing seat (11) is matched with that of the sealing port, and the sealing seat (11) is inserted into the inside of the sealing port. Force grooves (2) are opened on both sides of the surface of the top cover (1).
3. The quick-installation lead-free switch junction box according to claim 2, characterized in that: A sealing strip (111) is fixedly provided on the outer surface of the sealing seat (11), and the sealing seat (11) is inserted into the inside of the sealing port and sealed by the sealing strip (111).
4. The quick-installation lead-free switch junction box according to claim 2, characterized in that: The surface of the top cover (1) is evenly provided with four sets of perforations, and the inside of the lead-free junction box (4) is fixedly provided with four sets of fixing seats (5). The surfaces of the four sets of fixing seats (5) are all provided with screw holes, and the four sets of screw holes are connected to the four sets of perforations on the surface of the top cover (1). At the same time, the surfaces of the four sets of perforations are all covered with sealing rings (3).
5. A quick-installation lead-free switch junction box according to claim 4, characterized in that: The fixing bolt passes through the through hole opened on the top cover (1) and is screwed into the screw hole opened on the surface of the fixing seat (5). The fixing bolt passes through the sealing ring (3) and the surface area of the lead-free junction box (4) is the same as the surface area of the top cover (1).
6. A quick-installation lead-free switch junction box according to claim 1, characterized in that: The lead-free junction box (4) has two sets of positioning seats (7) on its outer bottom, and the two sets of positioning seats (7) are arranged diagonally. At the same time, the fixing bolt passes through the through hole opened on the positioning seat (7) and is screwed and fixed inside the screw hole opened on the surface of the screw post (83).
7. A quick-installation lead-free switch junction box according to claim 1, characterized in that: The mounting plate (8) has slots (84) on both sides of its surface, and the mounting plate (8) is fixedly provided with screw posts (83) arranged diagonally on its surface. The screw posts (83) are at the same height as the positioning pad (81), and the positioning pad (81) has a "U" shaped cross section. The limiting strip (41) and the limiting groove (82) have dovetail-shaped cross sections.