Anti-interference junction box for thermal instrument
By designing an anti-interference junction box for thermal instruments with insulating materials and a multi-layered protective structure, the problem of insufficient anti-interference capability of existing junction boxes has been solved, achieving stable operation and safety assurance in complex environments.
Patent Information
- Application Number
- CN202520339379.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing junction boxes lack sufficient anti-interference capabilities in industrial environments, failing to effectively protect internal wiring and easily leading to short circuits or other malfunctions.
An anti-interference junction box for thermal instruments was designed. The box body and cover are made of insulating material, and the interior is equipped with a sealing plate and a fixing plate. It is also equipped with a flame-retardant layer and a spring telescopic rod. Combined with a sealing ring and a conduit, it forms a multi-layer protection structure to reduce external interference and isolate the internal circuitry.
It effectively prevents dust, moisture, and corrosive gases from entering, buffers external impacts, ensures stable operation of the junction box in complex environments, and improves safety and reliability.
Smart Images
Figure CN223871999U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of thermal instrument, especially relates to a thermal instrument anti -interference terminal box. BACKGROUND
[0002] The instrument terminal box is a kind of key components for connecting instrument and control system, mainly play the role of isolation, amplification and conversion signal. In industrial field, instrument terminal box is widely used in the measurement and control of voltage, current, temperature, pressure and other parameters, through the processing and conversion of signal, ensure the stable operation of system, by using terminal box as transition, wire tube is connected with terminal box, the wire in wire tube is connected in terminal box, play the role of protecting wire and connecting wire, but the existing terminal box, for internal line connection protection, anti-interference ability is insufficient, cannot well protect internal line, it is easy to cause line short circuit or the present application proposes a kind of thermal instrument anti-interference terminal box. UTILITY MODEL CONTENTS
[0003] The utility model aims at the problem of internal line connection protection in the background art, anti-interference ability is insufficient, proposes a kind of thermal instrument anti-interference terminal box.
[0004] The utility model discloses a technical scheme of thermal instrument anti-interference terminal box, including box body, the top of box body is fixedly connected with top cover, and the bottom of box body is fixedly connected with bottom cover, one side of bottom cover is provided with terminal mechanism, the terminal mechanism includes a plurality of terminal interface connecting plates fixed on the outer wall of box body, one side of terminal interface connecting plate is fixedly connected with terminal port;
[0005] The inner wall of box body is fixedly connected with the seal grid board, the outer wall of seal grid board is fixedly connected with fixed plate on both sides, and the end, away from seal grid board, of two fixed plates is provided with protection mechanism.
[0006] Optionally, the protection mechanism includes a terminal tube fixed to one end of the fixed plate, the bottom of the terminal tube is fixedly connected with a bottom plate, and the inner wall of the terminal tube is paved with a fireproof layer.
[0007] Optionally, the outer wall of the terminal tube is fixedly connected with a wire inlet on both sides, and the inner wall of the wire inlet is slidably connected with a wire tube.
[0008] Optionally, the outer wall of the two wire inlets is fixedly connected with a connecting block on both sides, a plurality of spring telescopic rods are fixedly connected to one side of the connecting block, a plurality of fixed ports are fixedly connected to the end, away from the connecting block, of the spring telescopic rod, and the inner wall of the box body is fixedly connected with the fixed port.
[0009] Optionally, the conduit is slidably connected to the inner wall of the fixed tube, and the outer wall of the fixed tube is fixedly connected to one side of the end interface connecting plate by a sealing ring.
[0010] Optionally, telescopic rods are fixedly connected to the top ends of the two fixed plates, and top covers are fixedly connected to the top ends of the two telescopic rods, with multiple top covers located directly above the wiring conduit.
[0011] Optionally, external connecting plates are fixedly connected to both sides of the outer walls of the top cover and the bottom cover, and multiple external connecting plates are located on one side of the box body.
[0012] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This utility model has the functions of reducing interference from circuits and external factors, effectively preventing dust, water vapor, corrosive gases, etc. from entering the junction box, and buffering external impact forces, ensuring that the junction box can operate stably and safely in complex industrial environments, and providing reliable protection for the normal operation of thermal instruments. Attached Figure Description
[0013] Figure 1 A three-dimensional structural diagram of a junction box for preventing interference in thermal instruments;
[0014] Figure 2 This is a schematic diagram of the internal structure of a junction box for preventing interference in thermal instruments.
[0015] Figure 3 This is a schematic diagram of the protection mechanism structure of a junction box for preventing interference in thermal instruments;
[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle.
[0017] Reference numerals: 1. Top cover; 2. Box body; 3. Bottom cover; 4. External connecting plate; 5. End interface connecting plate; 6. Wiring port; 7. Sealing plate; 8. Fixing plate; 9. Telescopic rod; 10. Top cover; 11. Wiring conduit; 12. Base plate; 13. Fireproof layer; 14. Inlet; 15. Conduit; 16. Fixing pipe; 17. Connecting block; 18. Spring telescopic rod; 19. Fixing port; 20. Sealing ring. Detailed Implementation
[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0019] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Example 1
[0025] like Figure 1As shown, this utility model proposes a junction box for preventing interference in thermal instruments, including a box body 2. A top cover 1 is fixedly connected to the top of the box body 2, and a bottom cover 3 is fixedly connected to the bottom of the box body 2. External connecting plates 4 are fixedly connected to both sides of the outer walls of the top cover 1 and the bottom cover 3. Multiple external connecting plates 4 are located on one side of the box body 2. By setting the top of the box body 2 to be tightly fixedly connected to the top cover 1 and the bottom of the box body 2 to be fixedly connected to the bottom cover 3, the top cover 1 and the bottom cover 3 physically seal both ends of the box body 2, preventing the entry of foreign objects. By setting the box body 2, the top cover 1 and the bottom cover 3 to be made of insulating materials, the overall insulation performance of the junction box is further enhanced, reducing the risk of leakage. The external connecting plates 4 allow the device to install the junction box on various equipment brackets, instrument panels or other mounting carriers, ensuring that the junction box can be stably fixed in complex industrial environments and avoiding the impact of vibration, displacement and other factors on the stability of the circuit connection.
[0026] It should be added that, such as Figure 1 As shown, a wiring mechanism is provided on one side of the bottom cover 3. The wiring mechanism includes multiple end interface connection plates 5 fixed to the outer wall of the box 2. Each end interface connection plate 5 has a connection port 6 fixedly connected to one side. By setting the end interface connection plate 5, the wire ends are more securely fixed. The connection port 6 is used to connect to various circuits of thermal instruments, which facilitates signal transmission and equipment debugging.
[0027] It should be noted that, as Figure 2 , Figure 3 and Figure 4As shown, a sealing plate 7 is fixedly connected to the inner wall of the box 2. By setting the sealing plate 7, the internal space of the box 2 is divided, reducing interference between different lines. Fixing plates 8 are fixedly connected to both sides of the outer wall of the sealing plate 7. By setting the fixing plates 8, the internal fixation of the device is more stable. A protective mechanism is set at the end of each fixing plate 8 away from the sealing plate 7. The protective mechanism includes a wiring pipe 11 fixed to one end of the fixing plate 8. A bottom plate 12 is fixedly connected to the bottom end of the wiring pipe 11. By setting the bottom plate 12, the device can support and seal the bottom of the wiring pipe 11, preventing dust and debris from entering the wiring pipe from the bottom. Inside the conduit 11, the overall stability of the conduit 11 is enhanced to a certain extent. The inner wall of the conduit 11 is lined with a fire-retardant layer 13, which is made of high-performance fire-resistant materials, such as fire-resistant mica tape. This fire-retardant layer 13 can quickly block the spread of flames and prevent further fire spread when the internal wiring of the conduit 11 generates high temperatures or even open flames due to overload, short circuits, or other reasons. This buys valuable time for staff to handle the fault, greatly improving the safety of the junction box and reducing interference from external factors. Both sides of the outer wall of the conduit 11 are fixedly connected to inlet ports 14, and the inner walls of both inlet ports 14 are slidably connected to conductive... The conduit 15 allows the connecting wire to be inserted into the device. Connecting blocks 17 are fixedly connected to both sides of the outer walls of the two inlets 14. Spring telescopic rods 18 are fixedly connected to one side of each connecting block 17. Fixed ports 19 are fixedly connected to the ends of the spring telescopic rods 18 away from the connecting blocks 17. These fixed ports 19 are fixedly connected to the inner wall of the housing 2. When the device is subjected to external impact, the fixed ports 19 cause the spring telescopic rods 18 to extend or retract. The springs within the spring telescopic rods 18 cushion the external impact, protecting the internal equipment. The conduit 1... 5. The inner wall of the fixed tube 16 is slidably connected to the fixed tube 16. The outer wall of the fixed tube 16 is fixedly connected to one side of the end interface connecting plate 5 by the sealing ring 20. By setting the wire tube 15 and the sealing ring 20, the device is protected from external moisture and dust, thus protecting the internal circuit. The top ends of the two fixed plates 8 are fixedly connected to the telescopic rods 9, and the top ends of the two telescopic rods 9 are fixedly connected to the top covers 10. The multiple top covers 10 are located directly above the wiring tube 11. By setting the top covers 10 to tightly cover the wiring tube 11, the internal circuit of the wiring tube 11 is protected, preventing dust, moisture, foreign objects, etc. from entering, and ensuring the normal operation of the wiring circuit.
[0028] In this embodiment, the junction box is securely installed on the corresponding equipment bracket, instrument panel, or other mounting carrier using appropriate bolts, nuts, and other connectors through the mounting holes on the external connecting plate 4, ensuring the stability of the junction box position. Then, the wiring connectors of the external thermal instruments are accurately inserted into the wiring ports 6 according to the corresponding relationships to complete the electrical connection. During the wiring process, the sealing plate 7 automatically separates different types of wiring into different areas, effectively reducing interference between wiring. When it is necessary to inspect or adjust the wiring inside the wiring conduit 11, the operator can remove the top cover 1, and then operate the telescopic rod 9 to raise the top cover 10, exposing the internal space of the wiring conduit 11. After completion, the top cover 10 is lowered to tightly cover the wiring pipe 11. At this time, the sealing ring 20 is tightly fitted between the fixed pipe 16 and the end interface connecting plate 5, forming a good sealing barrier to effectively prevent dust, water vapor, corrosive gases and other substances from entering the junction box. At the same time, the fireproof layer 13 provides fire protection for the internal circuit of the wiring pipe 11. If an external impact occurs, the impact will squeeze the box body 2. The deformation of the box body 2 will drive the fixed port 19 and the spring telescopic rod 18 to expand and contract, so that the impact can be buffered. This ensures that the junction box can operate stably and safely in complex industrial environments and provides reliable protection for the normal operation of thermal instruments.
[0029] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A junction box for preventing interference in thermal instruments, comprising a box body (2), wherein a top cover (1) is fixedly connected to the top of the box body (2), and a bottom cover (3) is fixedly connected to the bottom of the box body (2), characterized in that: A wiring mechanism is provided on one side of the bottom cover (3). The wiring mechanism includes multiple end interface connecting plates (5) fixed to the outer wall of the box (2). Each end interface connecting plate (5) has a wiring port (6) fixedly connected to one side. The inner wall of the box (2) is fixedly connected to a sealing plate (7), and both sides of the outer wall of the sealing plate (7) are fixedly connected to a fixing plate (8). The ends of the two fixing plates (8) away from the sealing plate (7) are provided with a protective mechanism.
2. The anti-interference junction box for thermal instruments according to claim 1, characterized in that, The protection mechanism includes a wiring pipe (11) fixed to one end of the fixing plate (8), the bottom end of the wiring pipe (11) is fixedly connected to a base plate (12), and the inner wall of the wiring pipe (11) is covered with a fireproof layer (13).
3. The anti-interference junction box for thermal instruments according to claim 2, characterized in that, Both sides of the outer wall of the wiring conduit (11) are fixedly connected to the inlet port (14), and the inner walls of the two inlets (14) are slidably connected to the wire conduit (15).
4. The anti-interference junction box for thermal instruments according to claim 3, characterized in that, Both sides of the outer wall of the two inlets (14) are fixedly connected to connecting blocks (17), and one side of the multiple connecting blocks (17) is fixedly connected to a spring telescopic rod (18). The end of the multiple spring telescopic rods (18) away from the connecting blocks (17) is fixedly connected to a fixed port (19), and the multiple fixed ports (19) are fixedly connected to the inner wall of the box (2).
5. A junction box for preventing interference in thermal instruments according to claim 3, characterized in that, The conduit (15) is slidably connected to the inner wall of the fixed tube (16), and the outer wall of the fixed tube (16) is fixedly connected to one side of the end interface connecting plate (5) by a sealing ring (20).
6. The anti-interference junction box for thermal instruments according to claim 1, characterized in that, Telescopic rods (9) are fixedly connected to the top of the two fixed plates (8), and top covers (10) are fixedly connected to the top of the two telescopic rods (9). The multiple top covers (10) are all located directly above the wiring pipe (11).
7. The anti-interference junction box for thermal instruments according to claim 1, characterized in that, Both sides of the outer walls of the top cover (1) and the bottom cover (3) are fixedly connected with external connecting plates (4), and multiple external connecting plates (4) are located on one side of the box body (2).