A power strip with overheat protection structure

Abstract

The utility model discloses a row of inserting with overheat protection structure belongs to the field of row of inserting, a row of inserting with overheat protection structure, including row of inserting body, the multiple transverse array distribution setting of row of inserting body upper end is provided with the jack, the power cord is fixedly installed to the left middle part of row of inserting body, the multiple transverse array distribution setting of electrically conductive copper sheet is fixedly installed in the bottom of row of inserting body, the contact copper sheet is fixedly installed to the middle part of electrically conductive copper sheet upper end, and the contact copper sheet is located below the jack, and it is through the setting of overheat protection mechanism, and the heat of electrically conductive copper sheet and contact copper sheet can be conducted in real time to heat conduction plate, and is transferred to spring -like shape memory alloy through heat conduction cylinder, when temperature reaches the threshold value of shape change, shape memory alloy unfolds and pushes the connecting plate, and then drives the contact seat to make the electrically conductive contact and electrically conductive base separate, and the power supply circuit is automatically cut off, avoids the row of inserting body shell deformation, burns the problem of high temperature, and thoroughly eliminates the fire risk, and improves the security of row of inserting.

Description

Technical Field

[0001] This utility model relates to the field of power strips, and more specifically, to a power strip with an overheat protection structure. Background Technology

[0002] With the widespread use of household appliances, the usage rate of high-power appliances such as air conditioners and induction cookers has increased significantly, and the overall electricity consumption of residents has continued to increase. As a core electrical connection device in daily life, power strips are in a high-load working state for a long time.

[0003] Chinese Patent Publication No. CN210111202U discloses a power strip in which the conductive piece in the first socket is separated from the conductive component connected to the power cord connector. A rotating component is also provided to drive the conductive piece or component to move and make contact with the other. When a plug prong is inserted into the first socket, the prong pushes the rotating component to rotate, driving the conductive piece or component to move and make contact, at which point the circuit is completed. When the prong is removed from the first socket, the conductive piece and component return to their original positions, and the conductive piece is no longer energized. This design prevents electric shock if a child's finger or a non-standard conductive object is accidentally inserted into the first socket; it also prevents short circuits if water splashes into the first socket.

[0004] In existing technologies, the contact points of plugs and power strips are prone to oxidation and dirt accumulation after long-term use, resulting in poor contact and excessive heat generation. High-power appliances running for extended periods or short circuits can also cause the copper components inside the power strip to rapidly generate high temperatures. These high temperatures can easily cause the plastic casing of the power strip to deform or burn, and in severe cases, can lead to a fire. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a power strip with an overheat protection structure. Through the overheat protection mechanism, the heat-conducting plate can conduct heat between the conductive copper sheet and the contact copper sheet in real time, and transfer it to the spring-shaped shape memory alloy through the heat-conducting cylinder. When the temperature reaches the deformation threshold, the shape memory alloy unfolds and pushes the connecting plate, thereby causing the contact seat to separate the conductive contacts from the conductive base, automatically cutting off the power supply circuit. This avoids the problem of deformation and burnout of the power strip body shell caused by high temperature, completely eliminates the risk of fire, and improves the safety of the power strip.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A power strip with an overheat protection structure includes a power strip body, a plurality of horizontally arrayed sockets arranged on the upper end of the power strip body, a power cord fixedly installed on the middle left side of the power strip body, a plurality of horizontally arrayed conductive copper sheets fixedly installed on the bottom inner part of the power strip body, contact copper sheets fixedly installed on the middle upper end of the conductive copper sheets, the contact copper sheets being located below the sockets, and a guide groove provided on the right upper end of the power strip body. The power strip also includes:

[0010] A power control mechanism is installed on the right side of the power strip body, and the power control mechanism is used to control the power supply to and from the power strip body.

[0011] An overheat protection mechanism is installed at the rear end of the power strip body. The overheat protection mechanism is used to control the power strip body to automatically cut off power when the copper sheet in the power strip body becomes overheated.

[0012] Furthermore, the power control mechanism includes a base, which is fixedly connected to the lower right side of the power strip body and is arranged perpendicular to the power strip body. The base is located directly below the guide groove, and a first rectangular groove is provided in the middle of the upper end of the base. A first elastic pad is fixedly installed at the bottom of the first rectangular groove, and a conductive base is fixedly installed at the upper end of the first elastic pad.

[0013] Furthermore, the power control mechanism also includes a contact seat, which is installed in the middle of the upper end of the base by a sliding connection. A control block is fixedly installed in the middle of the upper end of the contact seat. The control block is installed in the right side of the guide groove by a sliding connection, and the shape of the control block is adapted to the guide groove.

[0014] Furthermore, a second rectangular groove is provided in the middle of the lower end of the contact seat, a second elastic gasket is fixedly installed at the top of the second rectangular groove, and a conductive contact is fixedly installed at the lower end of the second elastic gasket. The conductive contact is located above the conductive base and abuts against the conductive base.

[0015] Furthermore, the overheat protection mechanism includes multiple heat-conducting plates, which are respectively installed on the rear end of the conductive copper sheet by a fixed connection. A shape memory alloy is fixedly installed in the middle of the rear end of the heat-conducting plate. The shape memory alloy is spring-shaped, and a heat-conducting cylinder is sleeved on the outside of the shape memory alloy. The end of the heat-conducting cylinder near the heat-conducting plate is fixedly connected to the heat-conducting plate.

[0016] Furthermore, the overheat protection mechanism also includes multiple guide rods, all of which are fixedly connected and installed in the power strip body. The guide rods are arranged in a horizontal array and are offset from the conductive copper sheet. A connecting plate is slidably installed on the rear end of the outer side of the guide rod. The connecting plate is located at the rear end of the heat-conducting cylinder, and the end of the connecting plate near the power control mechanism is fixedly connected to the contact seat.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) This solution uses an overheat protection mechanism to conduct heat between the conductive copper sheet and the contact copper sheet in real time, and then transfers the heat to the spring-shaped shape memory alloy through the heat conduction cylinder. When the temperature reaches the deformation threshold, the shape memory alloy unfolds and pushes the connecting plate, which in turn drives the contact seat to separate the conductive contact from the conductive base, automatically cutting off the power supply circuit. This avoids the problem of deformation and burning of the power strip body shell caused by high temperature, completely eliminates the risk of fire, and improves the safety of the power strip.

[0020] (2) In this solution, the power control mechanism achieves manual switching by sliding the control block. When the overheating problem is solved and the temperature drops to a safe range, the shape memory alloy returns to its original state, and the conductive contacts can be manually reset to reconnect with the conductive base to restore power supply. There is no need to frequently replace the power strip, which reduces the cost of use and improves the ease of operation.

[0021] (3) In this scheme, the guide rod and the conductive copper sheet are staggered to avoid interference with the electrical structure when the connecting plate slides, thus ensuring the stability of the power supply circuit.

[0022] (4) In this solution, the first elastic gasket and the second elastic gasket can buffer the contact pressure between the conductive contact and the conductive base, ensure stable power supply contact, and reduce the possibility of secondary heat generation due to poor contact. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall external structure of the power strip body in this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the power strip body in this utility model;

[0025] Figure 3 This is a cross-sectional view of the heat-conducting cylinder in this utility model;

[0026] Figure 4 This is a cross-sectional view of the power control mechanism in this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Power strip body; 11. Socket; 12. Guide groove; 2. Power cord; 3. Power control mechanism; 31. Base; 311. First rectangular groove; 312. First elastic gasket; 313. Conductive base; 32. Contact seat; 321. Second rectangular groove; 322. Second elastic gasket; 323. Conductive contact; 33. Control block; 4. Conductive copper sheet; 5. Contact copper sheet; 6. Overheat protection mechanism; 61. Heat-conducting plate; 62. Heat-conducting cylinder; 63. Shape memory alloy; 64. Guide rod; 65. Connecting plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0032] like Figures 1-4 As shown, this utility model has the following two specific embodiments.

[0033] Example 1:

[0034] Please see Figures 1-4A power strip with an overheat protection structure includes a power strip body 1, a plurality of horizontally arrayed sockets 11 arranged on the upper end of the power strip body 1, a power cord 2 fixedly installed on the middle left side of the power strip body 1, a plurality of horizontally arrayed conductive copper sheets 4 fixedly installed on the bottom inside the power strip body 1, a contact copper sheet 5 fixedly installed on the middle upper end of the conductive copper sheet 4, the contact copper sheet 5 being located below the sockets 11, a guide groove 12 provided on the right side of the upper end of the power strip body 1, and further includes:

[0035] Power control mechanism 3 is installed on the right side inside the power strip body 1. Power control mechanism 3 is used to control the power supply to and from the power strip body 1.

[0036] Overheat protection mechanism 6 is installed at the rear end of the power strip body 1. The overheat protection mechanism 6 is used to control the power strip body 1 to automatically cut off the power when the contact copper sheet 5 inside the power strip body 1 becomes overheated.

[0037] In this embodiment, as Figures 1-2 As shown, the power supply to the power strip body 1 is connected through the power cord 2. The power cord 2 and the conductive copper sheet 4 inside the power strip body 1 form a power supply circuit, providing power support for the entire electrical structure. When an external plug is inserted into the socket 11, the plug contacts the contact copper sheet 5 located below the socket 11. The contact copper sheet 5 obtains power through its fixed connection with the conductive copper sheet 4, thereby supplying power to external electrical appliances. The power control mechanism 3 is installed on the right side inside the power strip body 1 and is used to manually control the on / off state of the power strip body 1. By operating the power control mechanism 3, the on / off switching of the power supply circuit between the conductive copper sheet 4 and the power cord 2 can be realized. The overheat protection mechanism 6 is installed at the rear end inside the power strip body 1 and monitors the temperature change of the contact copper sheet 5 in real time. When the contact copper sheet 5 heats up due to poor contact caused by oxidation or dirt accumulation, or when high-power electrical appliances are running or the circuit is short-circuited and causes high temperature, the overheat protection mechanism 6 is triggered, controlling the power strip body 1 to automatically cut off the power supply circuit, realizing overheat protection and avoiding deformation, burning, and fire hazards of the outer shell.

[0038] Example 2:

[0039] The difference from Embodiment 1 is that this embodiment discloses a power control mechanism 3 and an overheat protection mechanism 6:

[0040] The power control mechanism 3 includes a base 31, which is fixedly connected to the lower right side of the power strip body 1. The base 31 is perpendicular to the power strip body 1 and is located directly below the guide slide 12. A first rectangular groove 311 is provided in the middle of the upper end of the base 31. A first elastic pad 312 is fixedly installed at the bottom of the first rectangular groove 311, and a conductive base 313 is fixedly installed at the upper end of the first elastic pad 312.

[0041] The power control mechanism 3 also includes a contact seat 32, which is installed in the middle of the upper end of the base 31 by a sliding connection. A control block 33 is fixedly installed in the middle of the upper end of the contact seat 32. The control block 33 is installed in the right side of the guide slide 12 by a sliding connection, and the shape of the control block 33 is adapted to the guide slide 12. A second rectangular groove 321 is provided in the middle of the lower end of the contact seat 32. A second elastic pad 322 is fixedly installed at the top of the second rectangular groove 321. A conductive contact 323 is fixedly installed at the lower end of the second elastic pad 322. The conductive contact 323 is located above the conductive base 313 and abuts against the conductive base 313.

[0042] The overheat protection mechanism 6 includes multiple heat-conducting plates 61, which are respectively installed at the rear end of the conductive copper sheet 4 by a fixed connection. A shape memory alloy 63 is fixedly installed in the middle of the rear end of the heat-conducting plate 61. The shape memory alloy 63 is spring-shaped. A heat-conducting cylinder 62 is sleeved on the outside of the shape memory alloy 63. The end of the heat-conducting cylinder 62 near the heat-conducting plate 61 is fixedly connected to the heat-conducting plate 61.

[0043] The overheat protection mechanism 6 also includes multiple guide rods 64, which are all installed in the power strip body 1 by a fixed connection. The guide rods 64 are arranged in a horizontal array and are staggered with the conductive copper sheet 4. A connecting plate 65 is slidably installed on the rear end of the outer side of the guide rod 64. The connecting plate 65 is located at the rear end of the heat conduction cylinder 62, and the end of the connecting plate 65 near the power control mechanism 3 is fixedly connected to the contact seat 32.

[0044] In this embodiment, as Figures 1-4 As shown, in the initial state, the conductive contact 323 at the lower end of the contact seat 32 abuts against the conductive base 313 on the base 31 under the elastic action of the second elastic pad 322. At this time, the power line 2, the conductive base 313, the conductive contact 323, the contact seat 32 and the conductive copper sheet 4 form a closed power supply circuit. By sliding the control block 33 in the sliding guide groove 12, the contact seat 32 can be driven to slide along the base 31, so that the conductive contact 323 is separated from the conductive base 313, and the power supply circuit is manually cut off to realize the on / off control. The first elastic pad 312 is used to buffer the pressure on the conductive base 313 to ensure contact stability.

[0045] Multiple heat-conducting plates 61 are fixed to the rear end of the conductive copper sheet 4, which conducts heat between the conductive copper sheet 4 and the contact copper sheet 5 in real time. The heat is transferred to the heat-conducting cylinder 62 through the heat-conducting plates 61, and then transferred to the spring-shaped shape memory alloy 63 inside the heat-conducting cylinder 62. When the temperature reaches the deformation threshold of the shape memory alloy 63, the shape memory alloy 63 stretches and deforms, pushing the connecting plate 65 to slide backward along the guide rod 64. Since the connecting plate 65 is fixedly connected to the contact seat 32, the sliding of the connecting plate 65 drives the contact seat 32 to move synchronously, so that the conductive contact 323 is separated from the conductive base 313, and the power supply circuit is automatically cut off. When the temperature drops to a safe range, the shape memory alloy 63 returns to its original shape. The control block 33 can be manually pushed forward to restore power supply. The entire process is achieved through mechanical structure linkage to realize automatic overheat protection without additional power supply, relying on the thermal deformation characteristics of the shape memory alloy 63 to complete the control.

[0046] The working principle of this utility model is as follows: The overall power supply is connected to the power strip body 1 through the power cord 2. The power cord 2 and the conductive copper sheet 4 inside the power strip body 1 form a core power supply circuit to provide power to the entire electrical structure. When the plug of an external appliance is inserted into the socket 11 at the upper end of the power strip body 1, the plug contacts the contact copper sheet 5 located below the socket 11 and fixed in the middle of the upper end of the conductive copper sheet 4, thereby obtaining power through the conductive copper sheet 4 to power the external appliance. The power control mechanism 3 is fixed to the lower right side of the power strip body 1 through the base 31. In the initial state, the conductive contact 323 connected to the second elastic pad 322 at the lower end of the contact seat 32 abuts against the conductive base 313 above the first elastic pad 312 in the first rectangular groove 311 of the base 31, maintaining the power supply circuit closed. By sliding the control block 33 fixed to the contact seat 32 in the sliding guide groove 12, the conductive contact 323 can be separated from the conductive base 313 to realize manual on / off control.

[0047] In the overheat protection mechanism 6, multiple heat-conducting plates 61 are fixed to the rear end of the conductive copper sheet 4, transferring the heat from the conductive copper sheet 4 and the contact copper sheet 5 to the connected heat-conducting cylinder 62, and then to the internal spring-shaped shape memory alloy 63. When the temperature reaches the deformation threshold of the shape memory alloy 63, it stretches and deforms, pushing the connecting plate 65 that slides along the guide rod 64. Since the connecting plate 65 is fixed to the contact seat 32, it drives the contact seat 32 to move, causing the conductive contact 323 to separate from the conductive base 313, automatically cutting off the power supply circuit and realizing overheat protection. When the temperature drops to a safe range, the shape memory alloy 63 returns to its original shape, and the control block 33 can be manually pushed to move and restore power supply, thereby avoiding the risk of the power strip body 1 deforming, burning, and causing a fire due to high temperature.

[0048] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A power strip with an overheat protection structure, comprising a power strip body (1), wherein the upper end of the power strip body (1) is provided with a plurality of horizontally arrayed sockets (11), a power cord (2) is fixedly installed in the middle left side of the power strip body (1), and a plurality of horizontally arrayed conductive copper sheets (4) are fixedly installed in the bottom of the power strip body (1), wherein a contact copper sheet (5) is fixedly installed in the middle upper end of the conductive copper sheet (4), and the contact copper sheet (5) is located below the sockets (11), characterized in that: The upper right side of the power strip body (1) is provided with a guide groove (12), and also includes: Power control mechanism (3), which is installed on the right side inside the power strip body (1), is used to control the power supply of the power strip body (1); Overheat protection mechanism (6) is installed at the rear end of the power strip body (1). The overheat protection mechanism (6) is used to control the power strip body (1) to automatically cut off power when the contact copper sheet (5) inside the power strip body (1) overheats.

2. A power strip with an overheat protection structure according to claim 1, characterized in that: The power control mechanism (3) includes a base (31), which is fixedly connected to the lower right side of the power strip body (1) and is arranged vertically to the power strip body (1). The base (31) is located directly below the guide slide (12). A first rectangular groove (311) is provided in the middle of the upper end of the base (31). A first elastic pad (312) is fixedly installed at the bottom of the first rectangular groove (311), and a conductive base (313) is fixedly installed at the upper end of the first elastic pad (312).

3. A power strip with an overheat protection structure according to claim 2, characterized in that: The power control mechanism (3) further includes a contact seat (32), which is installed in the middle of the upper end of the base (31) by a sliding connection. A control block (33) is fixedly installed in the middle of the upper end of the contact seat (32). The control block (33) is installed in the right side of the guide groove (12) by a sliding connection, and the shape of the control block (33) is adapted to the guide groove (12).

4. A power strip with an overheat protection structure according to claim 3, characterized in that: The lower middle part of the contact seat (32) is provided with a second rectangular groove (321), and a second elastic pad (322) is fixedly installed at the top of the second rectangular groove (321). A conductive contact (323) is fixedly installed at the lower end of the second elastic pad (322). The conductive contact (323) is located above the conductive base (313) and abuts against the conductive base (313).

5. A power strip with an overheat protection structure according to claim 1, characterized in that: The overheat protection mechanism (6) includes multiple heat-conducting plates (61). The multiple heat-conducting plates (61) are respectively installed on the rear end of the conductive copper sheet (4) by a fixed connection. A shape memory alloy (63) is fixedly installed in the middle of the rear end of the heat-conducting plate (61). The shape memory alloy (63) is spring-shaped. A heat-conducting cylinder (62) is sleeved on the outside of the shape memory alloy (63). The end of the heat-conducting cylinder (62) near the heat-conducting plate (61) is fixedly connected to the heat-conducting plate (61).

6. A power strip with an overheat protection structure according to claim 5, characterized in that: The overheat protection mechanism (6) also includes multiple guide rods (64). The multiple guide rods (64) are all installed in the power strip body (1) by a fixed connection. The guide rods (64) are arranged in a horizontal array. The guide rods (64) are offset from the conductive copper sheet (4). A connecting plate (65) is slidably installed on the rear end of the outer side of the guide rod (64). The connecting plate (65) is located at the rear end of the heat conduction cylinder (62), and the end of the connecting plate (65) near the power control mechanism (3) is fixedly connected to the contact seat (32).

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