An electrical box and electrical junction box

Abstract

The utility model relates to electrical equipment technical field, concretely is a kind of electrical box, including box, multiple heat dissipation baffle and shape memory alloy element, heat dissipation window is equipped on the both sides side plate of box, multiple heat dissipation baffle is rotatably installed in heat dissipation window, heat dissipation passage is formed between two adjacent heat dissipation baffles, shape memory alloy one end is hinged with pivot, shape memory alloy element is configured to induct the inside air temperature of box and axial telescopic change, when shape memory alloy element is heated and lengthens, push heat dissipation baffle to rotate, gradually open heat dissipation passage, when cooling and shrink, push heat dissipation baffle to rotate, gradually close heat dissipation passage.The utility model is inducted the inside air temperature of box by shape memory alloy element to push the opening and closing of heat dissipation baffle, to realize the automatic opening and closing of heat dissipation passage, need not electric drive, need not artificial judgment to open the heat dissipation function of heat dissipation structure, improve reliability and response speed under high temperature environment.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, specifically to an electrical box and an electrical connector. Background Technology

[0002] During the installation of electrical equipment, wires are typically connected to electrical junction boxes for control and connection to ensure connection stability and improve control accuracy and safety. Therefore, electrical junction boxes are an indispensable component of electrical systems.

[0003] Chinese utility model patent application number CN202420070623.5 discloses an electrical junction box. By setting a heat dissipation structure, it can quickly dissipate the high temperature inside the junction box when the heat dissipation effect of the junction box is poor. This avoids the situation where the heat is slowly dissipated and high heat accumulates inside the junction box, thus ensuring the heat dissipation effect of the junction box. It also avoids the disadvantage of the modules inside the box being damaged by high temperature, which affects the use of the box. This ensures the normal use of each module and improves the practicality of the junction box.

[0004] In the aforementioned electrical junction box, the heat dissipation structure uses an electric telescopic rod to control the opening and closing of the baffle, requiring manual operation of the power switch. It cannot automatically adjust based on real-time temperature, resulting in a delayed response in high-temperature environments. In other words, the junction box requires manual assessment of the internal temperature and active activation of the switch to achieve its heat dissipation function. If the user fails to operate it promptly, heat can easily accumulate, posing a significant risk, especially in unattended scenarios (such as outdoor equipment).

[0005] Therefore, it is necessary to improve the structure of the aforementioned electrical junction box. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this utility model provides an electrical box and an electrical connector, the specific technical solution of which is as follows:

[0007] An electrical box includes a box body with heat dissipation windows on both side panels. The electrical box also includes multiple heat dissipation baffles and a shape memory alloy element. The multiple heat dissipation baffles are rotatably mounted in the heat dissipation windows via a rotating shaft. The multiple heat dissipation baffles are arranged from top to bottom, forming a heat dissipation channel between adjacent baffles. The shape memory alloy element is fixedly mounted on the box body with one end hinged to the rotating shaft. The shape memory alloy element is configured to expand and contract axially in response to the internal air temperature of the box body. When the shape memory alloy element expands due to heat, it pushes the heat dissipation baffles to rotate via the rotating shaft, gradually opening the heat dissipation channel. When the shape memory alloy element contracts due to cooling, it pushes the heat dissipation baffles to rotate via the rotating shaft, gradually closing the heat dissipation channel.

[0008] The electrical box uses shape memory alloy elements to sense the air temperature inside the box and drive the opening and closing of the heat dissipation baffle, thereby realizing the automatic opening and closing of the heat dissipation channel. This eliminates the need for electric drive and manual judgment of the temperature inside the box to activate the heat dissipation function, improving reliability and response speed in high-temperature environments.

[0009] Preferably, the heat dissipation baffle includes an upper folding plate, a lower folding plate, and a middle folding plate. The middle folding plate is rotatably installed in the heat dissipation window via the rotating shaft. The upper folding plate and the lower folding plate are respectively fixedly connected to both ends of the middle folding plate. The heat dissipation baffle is S-shaped, and a tortuous heat dissipation channel is formed between two adjacent heat dissipation baffles.

[0010] Preferably, the electrical box further includes a nylon dustproof mesh, which is located in the heat dissipation channel, and both ends of the nylon dustproof mesh are fixedly connected to the rotating shafts corresponding to the two connected heat dissipation baffles.

[0011] Preferably, the electrical box further includes a flow guide plate, which is fixedly installed on the upper folding plate and is inclined downward at a 45-degree angle to the upper folding plate.

[0012] Preferably, the guide vane is a spiral guide vane.

[0013] Preferably, the shape memory alloy element is a shape memory alloy spring.

[0014] Preferably, the housing is provided with at least one inlet hole, and an inlet lock nut is provided in the inlet hole.

[0015] An electrical connector comprising the aforementioned electrical box.

[0016] Preferably, the electrical connector further includes terminals installed inside the electrical box.

[0017] Preferably, the electrical connector further includes a wiring duct installed inside the electrical box. Attached Figure Description

[0018] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0019] Figure 1 This is a schematic diagram of the overall structure of an electrical box in one embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of an electrical box in one embodiment of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of the heat dissipation baffle in one embodiment of the present invention. Figure 2 ;

[0022] Figure 4 This is a schematic diagram illustrating the structural relationship between the rotating shaft and the shape memory alloy element in one embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram showing the structural relationship between the nylon dustproof net, the guide plate, and the heat dissipation baffle in one embodiment of the present invention.

[0024] In the diagram: 1. Body; 2. Cover plate; 3. Heat dissipation window; 4. Cable inlet; 5. Heat dissipation baffle; 6. Shape memory alloy component; 7. Shaft; 8. Nylon dustproof mesh; 9. Guide plate; 10. Terminal block; 11. Wiring trough; 12. Heat dissipation channel; 13. Connecting rod; 50. Upper folding plate; 51. Lower folding plate; 52. Middle folding plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] In this invention, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0029] like Figure 1As shown, an electrical box includes a box body. The box body includes a main body 1 and a cover plate 2, which is hinged to the open side of the main body 1 via a hinge, such as a hinge. The main body 1 includes left and right side plates, front and rear side plates, and a bottom plate, which together form the box body. Ventilation windows 3 are provided on both side plates of the box body, specifically on the left and right side plates.

[0030] The housing has at least one cable inlet hole 4, and a cable inlet lock nut is provided in the cable inlet hole 4. The cable inlet hole 4 can be located on the rear side plate. After the cable passes through the cable inlet nut, it enters the housing and is electrically connected to the terminal block 10 located inside the housing. The cable inlet nut is used to lock the cable and prevent it from loosening.

[0031] like Figure 1 , Figure 3 as well as Figure 4 As shown, the electrical box also includes multiple heat dissipation baffles 5 and shape memory alloy elements 6. The multiple heat dissipation baffles 5 are rotatably mounted in the heat dissipation window 3 via a rotating shaft 7. The multiple heat dissipation baffles 5 are arranged from top to bottom, and a heat dissipation channel 12 is formed between two adjacent heat dissipation baffles 5. The shape memory alloy element 6 is fixedly mounted on the box body and one end is hinged to the rotating shaft 7. The shape memory alloy element 6 is configured to sense the internal air temperature of the box body and expand and contract axially. When the shape memory alloy element 6 is heated and expands, it pushes the heat dissipation baffles 5 to rotate via the rotating shaft 7, gradually opening the heat dissipation channel 12. When the shape memory alloy element 6 is cooled and contracts, it pushes the heat dissipation baffles 5 to rotate via the rotating shaft 7, gradually closing the heat dissipation channel 12.

[0032] The shape memory alloy element 6 is a shape memory alloy spring, with one end fixedly mounted on the side plate and the other end hinged to the rotating shaft 7. Specifically, the rotating shafts 7 corresponding to multiple heat dissipation baffles 5 are connected together by a connecting rod 13, and the other end of the shape memory alloy element 6 is hinged to the rotating shaft 7 by the connecting rod 13. When the shape memory alloy element 6 expands due to heat, it drives the rotating shaft 7 to rotate around its axis, thereby driving the heat dissipation baffles 5 to move and gradually open the heat dissipation channel 12. When the shape memory alloy element 6 cools and contracts, it drives the heat dissipation baffles 5 to move through the connecting rod 13 and the rotating shaft 7, gradually closing the heat dissipation channel 12. In this way, when the temperature of the electrical box rises, the heat dissipation channel 12 can be opened to ventilate and dissipate heat inside the box; when the temperature of the electrical box drops, the heat dissipation channel 12 is correspondingly narrowed, which can reduce the entry of impurities and dust from the environment.

[0033] For the shape memory alloy element 6, its material type is typically nickel-titanium-based shape memory alloy (Ni-TiSMA), whose main components are nickel (Ni) and titanium (Ti). Nickel-titanium-based alloys are currently the most widely used shape memory alloys, possessing the following characteristics: 1. Significant shape memory effect: When the temperature exceeds the phase transformation temperature (e.g., 50℃), the alloy transforms from martensite to austenite, producing macroscopic deformation (elongation or contraction), driving the baffle action; as the temperature decreases, it recovers its shape by cooling back to the martensite phase. 2. Good corrosion resistance: Suitable for long-term use in electrical environments containing dust and moisture, avoiding failure due to oxidation or corrosion. 3. High fatigue life: Can withstand thousands of phase transformation cycles, meeting the long-term stable operation requirements of the junction box.

[0034] The phase transformation temperature of nickel-titanium alloys can be precisely controlled by adjusting the composition (such as adding elements like copper and niobium), enabling them to adapt to temperature thresholds in different heat dissipation scenarios. Preferably, in this embodiment, the phase transformation temperature threshold of the shape memory alloy element 6 includes: elongation upon heating at temperatures above 50 degrees Celsius; and contraction upon cooling when the temperature drops to 40 degrees Celsius.

[0035] Of course, depending on the actual situation, such as the different actual start-up and reset temperatures, shape memory alloys such as Ni50Ti50 and Ni52Ti48 can be selected.

[0036] Preferably, the heat dissipation baffle 5 includes an upper folding plate 50, a lower folding plate 51, and a middle folding plate 52. The middle folding plate 52 is rotatably installed in the heat dissipation window 3 via the rotating shaft 7. The upper folding plate 50 and the lower folding plate 51 are respectively fixedly connected to the two ends of the middle folding plate 52. The heat dissipation baffle is S-shaped, and a tortuous heat dissipation channel 12 is formed between two adjacent heat dissipation baffles 5.

[0037] The heat dissipation baffle 5 is set in an S-shape, so that a tortuous heat dissipation channel 12 is formed between two adjacent heat dissipation baffles 5. Its function is to not only ventilate and dissipate heat inside the box through the heat dissipation channel 12, but also prevent rainwater from splashing into the box through the heat dissipation window 3 on rainy days, so as to protect the electrical components inside the box.

[0038] The electrical box uses shape memory alloy element 6 to sense the air temperature inside the box and push the heat dissipation baffle 5 to open and close, thereby realizing the automatic opening and closing of the heat dissipation channel 12. This eliminates the need for electric drive and manual judgment of the temperature inside the box to activate the heat dissipation function of the heat dissipation structure, improving reliability and response speed in high-temperature environments.

[0039] In other words, the electrical box can automatically adjust the opening and closing of the heat dissipation baffle 5 according to the temperature of the air inside the box, thereby opening or closing the heat dissipation channel 12. Its heat dissipation function does not rely on manual intervention and can effectively ventilate and dissipate heat, making it highly practical.

[0040] like Figure 5 As shown, in one embodiment, the electrical box further includes a nylon dustproof mesh 8, which is located in the heat dissipation channel 12, and both ends of the nylon dustproof mesh 8 are fixedly connected to the rotating shafts 7 corresponding to the two connected heat dissipation baffles 5, respectively. The nylon dustproof mesh 8 has a certain degree of elasticity and, when placed in the heat dissipation channel 12, can filter the air entering the box body to prevent dust from entering.

[0041] like Figure 5 As shown, in one embodiment, the electrical box further includes a flow guide 9, which is fixedly mounted on the upper folding plate 50 and is inclined downwards at a 45-degree angle to the upper folding plate 50. Preferably, the flow guide 9 is a spiral flow guide 9.

[0042] When the heat dissipation baffle is opened, air flows from the inside of the box to the outside of the box through the heat dissipation channel 12. The air passes through the spiral guide plate 9, which can guide the air in a spiral shape through the nylon dustproof net 8 to reduce eddies and improve heat dissipation efficiency.

[0043] like Figure 1 as well as Figure 2 As shown, this utility model also provides an electrical connector, which includes the aforementioned electrical box. The electrical connector further includes a terminal block 10 installed inside the electrical box and a wiring trough 11 installed inside the electrical box.

[0044] The terminal block 10 simplifies the electrical wiring process, improves connection reliability, and facilitates quick electrical connection and disconnection. The wiring trough 11 facilitates the arrangement of wiring cables and improves the neatness of the wiring.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An electrical box, comprising a box body, wherein heat dissipation windows are provided on both side panels of the box body, characterized in that, The electrical box also includes multiple heat dissipation baffles and shape memory alloy elements. The multiple heat dissipation baffles are rotatably mounted in the heat dissipation window via a rotating shaft. The multiple heat dissipation baffles are arranged from top to bottom, and a heat dissipation channel is formed between two adjacent heat dissipation baffles. The shape memory alloy elements are fixedly mounted on the box body and one end is hinged to the rotating shaft. The shape memory alloy elements are configured to expand and contract axially in response to the internal air temperature of the box body. When the shape memory alloy elements expand due to heat, they push the heat dissipation baffles to rotate via the rotating shaft, gradually opening the heat dissipation channel. When the shape memory alloy elements contract due to cooling, they push the heat dissipation baffles to rotate via the rotating shaft, gradually closing the heat dissipation channel.

2. An electrical box as described in claim 1, characterized in that, The heat dissipation baffle includes an upper folding plate, a lower folding plate, and a middle folding plate. The middle folding plate is rotatably installed in the heat dissipation window via the rotating shaft. The upper folding plate and the lower folding plate are respectively fixedly connected to both ends of the middle folding plate. The heat dissipation baffle is S-shaped, and a tortuous heat dissipation channel is formed between two adjacent heat dissipation baffles.

3. An electrical box as described in claim 2, characterized in that, The electrical box also includes a nylon dustproof mesh, which is located in the heat dissipation channel, and both ends of the nylon dustproof mesh are fixedly connected to the rotating shafts corresponding to the two connected heat dissipation baffles.

4. An electrical box as described in claim 3, characterized in that, The electrical box also includes a flow guide plate, which is fixedly installed on the upper folding plate and is inclined downward at a 45-degree angle to the upper folding plate.

5. An electrical box as described in claim 4, characterized in that, The guide vane is a spiral guide vane.

6. An electrical box as described in claim 5, characterized in that, The shape memory alloy element is a shape memory alloy spring.

7. An electrical box as described in claim 5, characterized in that, The box body is provided with at least one inlet hole, and an inlet lock nut is provided in the inlet hole.

8. An electrical connector, characterized in that, The electrical connector includes the electrical box as described in any one of claims 1-7.

9. An electrical connector as described in claim 8, characterized in that, The electrical connector also includes terminals installed inside the electrical box.

10. An electrical connector as described in claim 9, characterized in that, The electrical connector also includes a wiring duct installed inside the electrical box.

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