A manual maintenance switch that reduces temperature rise through heat dissipation

Abstract

This invention discloses a manual maintenance switch that reduces temperature rise through heat dissipation. It includes a plug portion and a socket portion that are connected by a plug. The plug portion includes a plug housing, a fuse, two socket terminals, and a frame. The fuse is embedded in the inner cavity of the plug housing. The contact surfaces of the two socket terminals are flush with the blade surfaces on both sides of the fuse and fixed inside the plug housing. The frame covers the fuse and is connected to the plug housing. The contact ends of the two socket terminals are inserted into guide slots at both ends of the frame. The socket portion includes a socket housing. Pin terminals that mate with the socket terminals are fixed on both sides of the inner cavity of the socket housing. The plug portion and the socket portion are fastened together so that the pin terminals are inserted into the guide slots and connected to the socket terminals. A heat dissipation cavity is provided at the top of the plug housing, and a heat dissipation assembly is disposed within the heat dissipation cavity. The heat dissipation assembly is in contact with the fuse. This invention provides a heat dissipation assembly on the fuse, which can effectively conduct the heat from the fuse to the outside of the MSD cavity in a timely manner.

Description

Technical Field

[0001] This invention relates to the field of manual maintenance switch technology, and more specifically to a manual maintenance switch that can reduce temperature rise through heat dissipation. Background Technology

[0002] Currently, there are two main heat sources in manual maintenance switches (hereinafter referred to as MSDs). The largest heat source is the fuse, followed by the terminals. When the two heat sources are superimposed, a large amount of heat accumulates in the MSD cavity, causing its temperature rise value to be much higher than that of traditional connectors. Thermal failure is the main failure mode of MSD products. Therefore, whether the heat of the MSD can be effectively managed directly determines the service life of the product.

[0003] Most known methods for managing MSD heat on the market directly acknowledge that its temperature rise is higher than that of traditional electrical connection products. Based on product testing, the entire unit is used in a derating manner to control the heat generated by the MSD. The disadvantage is that the overcurrent density of the MSD is limited. If overcurrent occurs in actual use, the MSD may burn out or have its lifespan reduced due to long-term overheating. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a manual maintenance switch that can reduce temperature rise through heat dissipation, thus solving the problem that existing manual maintenance switches are at risk of burning out or having reduced lifespan due to prolonged overheating.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A manual maintenance switch with heat dissipation capability to reduce temperature rise is provided. It includes a plug portion and a socket portion that are connected by a plug. The plug portion includes a plug housing, a fuse, two socket terminals, and a frame. The fuse is embedded in the inner cavity of the plug housing. The contact surfaces of the two socket terminals are flush with the blade surfaces on both sides of the fuse and fixed inside the plug housing. The frame covers the fuse and is connected to the plug housing. The contact ends of the two socket terminals are inserted into guide sockets at both ends of the frame. The socket portion includes a socket housing. Pin terminals that mate with the socket terminals are fixed on both sides of the inner cavity of the socket housing. The plug portion and the socket portion are engaged so that the pin terminals are inserted into the guide sockets and connected to the socket terminals. A heat dissipation cavity is provided on the top of the plug housing, and a heat dissipation assembly is disposed within the heat dissipation cavity. The heat dissipation assembly is in contact with the fuse.

[0006] This invention incorporates a heat dissipation component on the fuse, which can effectively dissipate the heat from the fuse to the outside of the MSD cavity in a timely manner, thereby solving the problems of excessive MSD temperature rise, limited MSD current carrying capacity, reduced service life, and even damage to the equipment.

[0007] Furthermore, the heat dissipation component includes a heat dissipation plate disposed at the bottom of the heat dissipation cavity, and a plurality of heat dissipation fins extending into the heat dissipation cavity are evenly disposed on the heat dissipation plate.

[0008] Furthermore, a heat-conducting layer is provided on the contact surface where the heat sink connects to the fuse.

[0009] Furthermore, a protective cover is provided on the top of the heat dissipation cavity, and several heat dissipation holes are evenly opened on the protective cover; buckles are provided at the four corners of the lower surface of the protective cover, and buckle grooves that fit with the buckles are provided on the side wall of the heat dissipation cavity, and the buckles and buckle grooves are engaged.

[0010] Furthermore, the inner cavity of the plug housing is provided with two sets of guide grooves, each set of guide grooves including two oppositely arranged limit grooves, and limit ribs are respectively provided on both sides of the plug terminal, with the two limit ribs respectively embedded in the two opposite limit grooves.

[0011] Furthermore, the mounting surface of the plug housing has multiple mounting through holes, and the mounting surface of the socket housing has multiple plastic-sealed nuts that fit into the mounting through holes; the plug housing and the socket housing are opposite each other, and the plug housing and the socket housing are connected by bolts passing through the mounting through holes and screwing into the plastic-sealed nuts.

[0012] Furthermore, a first sealing groove is provided on the mounting surface of the plug housing, and a sealing ring is embedded in the first sealing groove; a second sealing groove is provided on the mounting surface of the socket housing, and a sealing gasket is embedded in the second sealing groove.

[0013] Furthermore, the frame is provided with multiple key slots, and the inner cavity of the socket housing is provided with multiple key ribs that fit into the key slots, with the key ribs embedded in the key slots.

[0014] Furthermore, two first guide frames are arranged opposite each other on the frame, and interlocking pins are arranged inside the first guide frames; The socket housing has two second guide frames inside its cavity; each second guide frame has an interlocking socket; the second guide frame is inserted into the first guide frame, so that the interlocking pin is inserted into the interlocking socket.

[0015] This invention discloses a manual maintenance switch that can reduce temperature rise through heat dissipation, and its beneficial effects are as follows: This invention incorporates a heat dissipation component on the fuse, which can effectively dissipate the heat from the fuse to the outside of the MSD cavity in a timely manner, thereby solving the problems of excessive MSD temperature rise, limited MSD current carrying capacity, reduced service life, and even damage to the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a manual maintenance switch according to the present invention, which can reduce temperature rise through heat dissipation.

[0017] Figure 2 This is a cross-sectional structural diagram of a manual maintenance switch according to the present invention, which can reduce temperature rise through heat dissipation.

[0018] Figure 3 This is a schematic diagram of the heat dissipation cavity of the present invention.

[0019] Figure 4 This is an exploded structural diagram of the plug portion of the present invention.

[0020] Figure 5 This is a schematic diagram of the framework of the present invention.

[0021] Figure 6 This is a schematic diagram of the structure of the socket terminal of the present invention.

[0022] Figure 7 This is a schematic diagram of the heat dissipation component of the present invention.

[0023] Figure 8 This is a schematic diagram of the structure of the protective cover of the present invention.

[0024] Figure 9 This is a schematic diagram of the socket portion of the present invention.

[0025] Among them, 1. plug housing; 101. limiting groove; 102. mounting through hole; 103. first sealing groove; 104. sealing ring; 2. fuse; 3. socket terminal; 301. limiting rib; 4. Frame; 401. Keyway; 402. First guide frame; 403. Interlocking pin; 404. Guide socket; 5. Socket housing; 501. Plastic-sealed nut; 502. Second sealing groove; 503. Sealing gasket; 504. Key rib; 505. Second guide frame; 506. Interlocking socket; 6. Pin terminals; 7. Heat dissipation components; 701. Heat sink; 702. Heat sink fins; 73. Thermal conductive layer; 8. Protective cover; 801. Heat dissipation hole; 802. Clip; 803. Clip groove. Detailed Implementation The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0026] Example 1 refer to Figures 1-9 This embodiment provides a manual maintenance switch that can reduce temperature rise through heat dissipation. Its purpose is to solve the problem that existing manual maintenance switches are at risk of product burnout or reduced lifespan due to long-term overheating. The specific structure of this embodiment will be described in detail below.

[0027] A manual maintenance switch that can reduce temperature rise through heat dissipation includes a plug portion and a socket portion that are connected by a mating mechanism. The plug part includes a plug housing 1, a fuse 2, two socket terminals 3 and a frame 4. The fuse 2 is embedded in the inner cavity of the plug housing 1. The contact surfaces of the two socket terminals 3 are flush with the blades on both sides of the fuse 2 and fixed inside the plug housing 1. The frame 4 covers the fuse 2 and is connected to the plug housing 1. The contact ends of the two socket terminals 3 are inserted into the guide sockets 404 at both ends of the frame 4. The socket part includes a socket housing 5. The inner sides of the socket housing 5 are respectively fixed with pin terminals 6 that match the socket terminals 3. The plug part and the socket part are fastened together so that the pin terminals 6 are inserted into the guide socket 41 and connected to the socket terminals 3. Specifically, a heat dissipation cavity is provided on the top of the plug housing 1, and a heat dissipation component 7 is provided inside the heat dissipation cavity. The heat dissipation component 7 is in contact with the fuse 2.

[0028] In this embodiment, firstly, the heat dissipation assembly 7 is installed in the heat dissipation cavity opened at the top of the plug housing 1. Then, the fuse 2 is embedded in the inner cavity of the plug housing 1. Next, the contact surfaces of the two socket terminals 3 are respectively flush with the blades on both sides of the fuse 2. The bolts are then passed through the contact surfaces of the socket terminals 3 and the blades of the fuse and screwed into the pre-reserved plastic-sealed nuts in the inner cavity of the plug housing 1, thereby fixing the fuse 2 and the socket terminals 3 in the plug housing 1, so that the heat dissipation assembly 7 and the fuse 2 are in contact and connected.

[0029] Next, the frame 4 is placed on the fuse 2, and the bolts are screwed into the pre-reserved plastic-sealed nuts in the inner cavity of the plug housing 1 through the pre-reserved through holes in the frame 4, thereby fixing the frame 4 in the plug housing 1 and completing the plug assembly.

[0030] Finally, connect the plug and socket parts so that the socket terminal 3 and the pin terminal 6 are connected, thus completing the assembly of the manual maintenance switch.

[0031] When the fuse 2 is working normally, its temperature will be higher than the room temperature. Since the fuse 2 is installed in the MSD cavity, the temperature inside the MSD cavity will continue to accumulate and rise, resulting in a reduction in the life of the MSD. This solution uses heat dissipation component 7 to effectively conduct the heat of the fuse 2 to the outside of the MSD cavity in a timely manner, so as to solve the problem of excessive MSD temperature rise, limited MSD current carrying capacity and reduced life of the MSD, or even damage to the equipment.

[0032] Specifically, the heat dissipation component 7 includes a heat dissipation plate 701 disposed at the bottom of the heat dissipation cavity, and a plurality of heat dissipation fins 702 extending into the heat dissipation cavity are evenly disposed on the heat dissipation plate 701.

[0033] In this embodiment, the heat sink 701 can be installed at the bottom of the heat dissipation cavity by screws. Several heat sinks 702 are evenly arranged on the heat sink 701. The shape of the heat sinks 702 can be set according to actual needs. Several heat sinks 702 extend into the heat dissipation cavity, so that the heat sink 701 contacts the fuse 2 and transfers heat to the several heat sinks 702 for heat dissipation. In this way, the heat of the fuse 2 is promptly conducted out of the MSD cavity, so as to solve the problems of excessive MSD temperature rise, limited MSD current carrying capacity and reduced service life, or even damage to the equipment.

[0034] Optionally, injection molding can be performed on the contact surface between the heat sink 701 and the heat dissipation cavity to achieve a seal. Alternatively, potting compound can be applied between the heat sink 702 and the heat dissipation cavity to achieve a waterproof seal.

[0035] Specifically, a heat-conducting layer 73 is provided on the contact surface where the heat sink 701 connects with the fuse 2.

[0036] In this embodiment, a thermally conductive layer 73 is provided on the contact surface where the heat sink 701 and the fuse 2 meet. The thermally conductive layer 73 achieves uniform contact between the heat sink 701 and the fuse 2, thereby improving heat transfer efficiency. The thermally conductive layer 73 is made of a thermally conductive material, specifically thermally conductive silicone rubber, thermally conductive gel, or a thermally conductive pad.

[0037] Specifically, a cover 8 is provided on the top of the heat dissipation cavity, and a number of heat dissipation holes 801 are evenly opened on the cover 8; a buckle 802 is provided at the four corners of the lower surface of the cover 8, and a buckle groove 803 that matches the buckle 802 is provided on the side wall of the heat dissipation cavity, and the buckle 802 and the buckle groove 803 are engaged.

[0038] In this embodiment, the top opening of the heat dissipation cavity allows the heat sink 702 to promptly dissipate the heat from the fuse 2 to the outside of the MSD cavity. A cover 8 is provided at the top opening of the heat dissipation cavity, with several ventilation holes 801 pre-drilled on the cover 8 to allow air circulation. Simultaneously, the cover 8 also prevents the operator from being burned by the high temperature of the heat sink 702 during MSD disassembly, giving the heat dissipation part IPXXB protection capability. The snap-fit ​​combination of the clip 802 and the clip slot 803 also facilitates disassembly.

[0039] Specifically, the inner cavity of the plug housing 1 is provided with two sets of guide grooves. Each set of guide grooves includes two oppositely arranged limit grooves 101. Limit ribs 301 are respectively provided on both sides of the plug terminal 3. The two limit ribs 301 are respectively embedded in the two opposite limit grooves 101.

[0040] In this embodiment, the limiting ribs 301 on both sides of the two socket terminals 3 are respectively embedded in two opposite limiting grooves 101, so that the two socket terminals 3 can be installed through two sets of guide grooves, which can ensure that the two socket terminals 3 are installed in place.

[0041] Specifically, the mounting surface of the plug housing 1 is provided with multiple mounting through holes 102, and the mounting surface of the socket housing 5 is provided with multiple plastic-sealed nuts 501 that fit into the mounting through holes 102; the plug housing 1 and the socket housing 5 are opposite each other, and the plug housing 1 and the socket housing 5 are connected by bolts passing through the mounting through holes 102 and being screwed into the plastic-sealed nuts 501.

[0042] Specifically, a first sealing groove 103 is provided on the mounting surface of the plug housing 1, and a sealing ring 104 is embedded in the first sealing groove 103; a second sealing groove 502 is provided on the mounting surface of the socket housing 5, and a sealing gasket 503 is embedded in the second sealing groove 502.

[0043] In this embodiment, a plurality of mounting through holes 102 are provided on the mounting surface of the plug housing 1, and a plurality of plastic sealing nuts 501 are provided on the mounting surface of the socket housing 5. The position of the plastic sealing nuts 501 matches the position of the mounting through holes 102, so that the plug housing 1 and the socket housing 5 are connected by screwing the bolt through the mounting through holes 102 into the plastic sealing nuts 501.

[0044] A sealing ring 104 is embedded in the first sealing groove 103, and a sealing gasket 503 is embedded in the second sealing groove 502, thereby improving the sealing performance of the connection between the plug housing 1 and the socket housing 5 through the sealing ring 104 and the sealing gasket 503.

[0045] Specifically, the frame 4 has multiple key slots 401, and the inner cavity of the socket housing 5 has multiple key ribs 504 that fit into the key slots 401, with the key ribs 401 embedded in the key slots 504.

[0046] In this embodiment, the key rib 401 is embedded in the key groove 504, which provides guidance for the insertion of the pin terminal 6 and the socket terminal 3. When the plug and socket are engaged, the pin terminal 6 is inserted into the guide socket 41 and connected to the socket terminal 3.

[0047] Specifically, two first guide frames 402 are arranged opposite each other on the frame 4, and an interlocking pin 403 is arranged inside the first guide frame 402; two second guide frames 505 are arranged inside the socket housing 5; an interlocking socket 506 is opened inside the second guide frame 505; the second guide frame 505 is inserted into the first guide frame 402, so that the interlocking pin 403 is inserted into the interlocking socket 506.

[0048] In this embodiment, the interlocking pin 403 is pressed into the first guide frame 402, and the interlocking hole 506 is provided in the second guide frame 505. The positions of the interlocking pin 403 and the interlocking hole 506 are matched, so that when the second guide frame 505 is embedded in the first guide frame 402, the interlocking pin 403 is inserted into the interlocking hole 506.

[0049] Although specific embodiments of the invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by a person skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A manual maintenance switch that reduces temperature rise through heat dissipation, characterized in that: Includes the plug and socket parts that are connected by a mating mechanism; The plug part includes a plug housing (1), a fuse (2), two socket terminals (3) and a frame (4). The fuse (2) is embedded in the inner cavity of the plug housing (1). The contact surfaces of the two socket terminals (3) are flush with the blades on both sides of the fuse (2) and fixed inside the plug housing (1). The frame (4) covers the fuse (2) and is connected to the plug housing (1). The contact ends of the two socket terminals (3) are inserted into the guide sockets (404) at both ends of the frame (4). The socket part includes a socket housing (5), and pin terminals (6) that fit with the socket terminals (3) are fixed on both sides of the inner cavity of the socket housing (5). The plug part and the socket part are fastened together so that the pin terminals (6) are inserted into the guide socket (41) and connected to the socket terminals (3). The top of the plug housing (1) is provided with a heat dissipation cavity, and a heat dissipation component (7) is provided in the heat dissipation cavity. The heat dissipation component (7) is in contact with the fuse (2).

2. The manual maintenance switch for reducing temperature rise through heat dissipation according to claim 1, characterized in that: The heat dissipation assembly (7) includes a heat dissipation plate (701) disposed at the bottom of the heat dissipation cavity, and a plurality of heat dissipation fins (702) extending into the heat dissipation cavity are uniformly disposed on the heat dissipation plate (701).

3. The manual maintenance switch for reducing temperature rise through heat dissipation according to claim 2, characterized in that: A heat-conducting layer (73) is provided on the contact surface where the heat sink (701) and the fuse (2) are connected.

4. The manual maintenance switch for reducing temperature rise through heat dissipation according to claim 1, characterized in that: The top of the heat dissipation cavity is provided with a cover (8), and a plurality of heat dissipation holes (801) are evenly opened on the cover (8); buckles (802) are provided at the four corners of the lower surface of the cover (8), and buckle grooves (803) that fit with the buckles (802) are provided on the side wall of the heat dissipation cavity, and the buckles (802) and buckle grooves (803) are engaged.

5. The manual maintenance switch for reducing temperature rise through heat dissipation according to claim 4, characterized in that: The inner cavity of the plug housing (1) is provided with two sets of guide grooves. Each set of guide grooves includes two oppositely arranged limit grooves (101). Limit ribs (301) are respectively provided on both sides of the plug terminal (3). The two limit ribs (301) are respectively embedded in the two opposite limit grooves (101).

6. The manual maintenance switch according to claim 1, which reduces temperature rise through heat dissipation, is characterized in that: The plug housing (1) has multiple mounting holes (102) on its mounting surface, and the socket housing (5) has multiple plastic sealing nuts (501) that fit into the mounting holes (102) on its mounting surface. The plug housing (1) and the socket housing (5) are opposite to each other, and the plug housing (1) and the socket housing (5) are connected by bolts passing through the mounting holes (102) and screwing into the plastic sealing nuts (501).

7. The manual maintenance switch for reducing temperature rise through heat dissipation according to claim 1, characterized in that: The mounting surface of the plug housing (1) is provided with a first sealing groove (103), and a sealing ring (104) is embedded in the first sealing groove (103); the mounting surface of the socket housing (5) is provided with a second sealing groove (502), and a sealing gasket (503) is embedded in the second sealing groove (502).

8. The manual maintenance switch according to claim 1, which reduces temperature rise through heat dissipation, is characterized in that: The frame (4) has multiple key slots (401), and the inner cavity of the socket housing (5) is provided with multiple key ribs (504) that fit with the key slots (401). The key ribs (401) are embedded in the key slots (504).

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