Automatic temperature control heating pad

Abstract

The utility model discloses an automatic temperature control heating pad which comprises a heating pad body, a heating wire is arranged at the bottom of the inner wall of the heating pad body, the right side of the heating pad body is connected with a power line, and a controller is installed between the power line and the heating pad body. A temperature sensor is fixed to the rear side of the bottom of the inner wall of the heating pad body, and a supporting frame is fixedly connected to the right side of the bottom of the inner wall of the heating pad body. According to the automatic temperature control heating pad, when the temperature of the surface of the heating pad body is too high, the memory metal spring can contract, so that the shape of the memory metal spring is changed, the movable contact switch is driven to be separated from the fixed switch, a circuit is disconnected, heating of the heating pad body is stopped, and potential safety hazards are reduced; the memory metal spring restores the shape, the movable contact switch can be driven to reset and make contact with the fixed contact switch, the heating pad body is powered on again, and therefore the temperature of the surface of the heating pad body can be automatically controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to heating pad technical field, concretely is an automatic temperature control heating pad. BACKGROUND

[0002] Heating pad is a kind of equipment that provides warmth and comfort for human body by converting electric energy into heat energy, can promote blood circulation, relieve muscle fatigue and pain, and is widely used in family, office and outdoor and multiple scenes.

[0003] Defects: But most of the heating pads on the market have certain drawbacks when used, most of the heating pads do not have automatic temperature control function, which can easily cause user's skin burns when used, because the buttocks are mainly composed of fat, and the nerve endings are not very rich, so the sensitivity to temperature is not very high; And after long time use, because the temperature is too high, it can cause safety accidents, in addition, the power consumption of most heating pads is large.

[0004] In order to solve the above defects, the prior art (application number: 202322660329.8, granted announcement date is 2024-07-23 of Chinese patent) discloses a kind of low power consumption automatic temperature control heating pad, temperature sensor is set to monitor the temperature of heating pad body in real time, if temperature is too high, controller will automatically lower heating temperature, when temperature reduces to room temperature, it will start heating again;The reflective layer set in the heating pad body is a kind of component of pure aluminum film material, which can effectively reflect the heat of heating layer, improve the heat conversion efficiency, make the heating pad body temperature rise fast, heat conversion efficiency is high, can greatly reduce power consumption;The heat preservation fixed layer set in the heating pad body improves the heat preservation effect of the utility model, solves the problem that long time use will cause the temperature of heating pad to be high, if not found in time, it can cause accident, there is big security risk and high power consumption.

[0005] The prior art is connected with temperature sensor and controller, and uses controller to automatically adjust the temperature of heating pad body according to temperature sensor, but lacks the function of automatic power-off when temperature is too high, so that the heating pad will continue to heat after the user leaves the heating pad for a period of time, the surface temperature of the heating pad rises, which can easily cause user's skin burns, resulting in certain security risks.

[0006] Therefore, we propose that automatic temperature control heating pad can well solve the above problems. Utility model content

[0007] The utility model discloses a purpose at providing a kind of automatic temperature control heating pad to solve the lack of automatic power-off function in the case of temperature being too high as described in the above background art, so that user is still continuously heated after leaving heating pad for a period of time, so that heating pad surface temperature rises, it is easy to cause user skin scalding condition, lead to there is certain security hidden trouble problem.

[0008] To achieve the above object, the utility model provides the following technical scheme: an automatic temperature control heating pad, including heating pad body, the bottom of the inner wall of heating pad body is provided with heating wire, and the right side of heating pad body is connected with power cord, and controller is installed between power cord and heating pad body;The rear side of the bottom of the inner wall of heating pad body is fixed with temperature sensor, and the right side of the bottom of the inner wall of heating pad body is fixedly connected with support frame, and the inside of support frame is provided with connecting plate;Memory metal spring is installed between the left side of connecting plate and the inner wall of support frame, and movable contact switch is bolted on the right side of connecting plate, and fixed contact switch is bolted on the right side of the inner wall of support frame.

[0009] Preferably, the memory metal spring is made of nickel-titanium alloy material, the right end of the memory metal spring is fixedly connected with the left side of the connecting plate, and the positions of the movable contact switch and the fixed contact switch correspond.

[0010] Preferably, the heating wire is electrically connected to the fixed contact switch through a wire, and the temperature sensor is electrically connected to the controller through a wire.

[0011] Preferably, an insulating layer is arranged above the inside of the heating pad body, and a heat preservation layer is bonded to the upper surface of the insulating layer.

[0012] Preferably, a heat reflecting layer is arranged on the side of the heat preservation layer away from the insulating layer, and a fireproof layer is bonded to the upper surface of the heat reflecting layer.

[0013] Preferably, the bottom of the inner wall of the heating pad body is fixedly connected with telescopic rods at equal angles, the outside of the telescopic rods is sleeved with outward spring, and the top of the four telescopic rods is fixedly connected with an elastic support net.

[0014] Preferably, the four telescopic rods are respectively distributed at the four corners of the bottom of the inner wall of the heating pad body.

[0015] Compared with the prior art, the automatic temperature control heating pad has the following advantages:

[0016] (1) The heating pad body is powered on, the heating wire converts electric energy into heat energy, so that the heating effect is achieved, then when the temperature of the heating pad body surface is too high, the memory metal spring will shrink, so that its shape is changed, and the movable contact switch is separated from the fixed switch, so that the circuit is disconnected, and the heating of the heating pad body is stopped, and the safety hidden danger is reduced;

[0017] Further, when the temperature decreases to the safe range, the memory metal spring restores the shape, can drive the movable contact switch to reset and contact with the fixed contact switch, re-power the heating pad body, so that the temperature of the heating pad body surface can be automatically controlled.

[0018] (2) The heat reflecting layer can effectively reflect the heat of the heating wire, improve the heat energy conversion efficiency, make the heating pad body temperature rise faster, and the heat insulating layer can avoid heat loss, improve the heat preservation effect of the heating pad body, and the fireproof layer can improve the fireproof performance of the heating pad body.

[0019] (3) The outer supporting spring arranged outside the telescopic rod can buffer and protect the heating pad body, ensure the stability in the heating process, and the elastic supporting net can improve the supporting elasticity and acting force of the heating pad body under stress. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a main section structure schematic view of the utility model;

[0021] Figure 2 It is a temperature sensor and heating pad body connection structure schematic view of the utility model;

[0022] Figure 3 It is an insulation layer, heat insulating layer and heat reflecting layer connection structure schematic view of the utility model;

[0023] Figure 4 It is a movable contact switch and fixed contact switch separation structure schematic view of the utility model;

[0024] Figure 5 It is a supporting frame and memory metal spring three-dimensional structure schematic view of the utility model;

[0025] Figure 6 It is a Figure 1 It is a structure schematic view of the utility model A place amplification.

[0026] In the drawing: 1, heating pad body;2, heating wire;3, power line;4, controller;5, temperature sensor;6, telescopic rod;7, elastic supporting net;8, insulation layer;9, heat insulating layer;10, fireproof layer;11, supporting frame;12, memory metal spring;13, movable contact switch;14, fixed contact switch;15, connecting plate;16, heat reflecting layer. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0028] Please refer to Figures 1-6 , the present application provides the following technical scheme: an automatic temperature control heating pad;

[0029] Embodiment one: in order to solve the problem that the prior art lacks the function of automatic power-off in the case of high temperature, so that the heating pad will continue to heat after the user leaves the heating pad for a period of time, which will cause the surface temperature of the heating pad to rise and cause the user's skin to be scalded, resulting in certain safety hazards, therefore the following scheme is disclosed, please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 , including heating pad body 1, the bottom of the inner wall of the heating pad body 1 is provided with heating wire 2, and the right side of the heating pad body 1 is connected with power line 3, and the controller 4 is installed between the power line 3 and the heating pad body 1; the rear side of the bottom of the inner wall of the heating pad body 1 is fixed with temperature sensor 5, the heating wire 2 is electrically connected to fixed contact switch 14 through wire, the temperature sensor 5 is electrically connected to controller 4 through wire, the right side of the bottom of the inner wall of the heating pad body 1 is fixedly connected with support frame 11, and the inner side of the support frame 11 is provided with connecting plate 15; memory metal spring 12 is installed between the left side of connecting plate 15 and the inner wall of support frame 11, and movable contact switch 13 is bolted on the right side of connecting plate 15, fixed contact switch 14 is bolted on the right side of the inner wall of support frame 11, memory metal spring 12 is made of nickel titanium alloy material, the right end of memory metal spring 12 is fixedly connected with the left side of connecting plate 15, and the positions of movable contact switch 13 and fixed contact switch 14 correspond to each other.

[0030] In use, the user will plug the plug at one end of the power cord 3 into the socket, power on the heating pad body 1, at this time the heating wire 2 works, and converts the electric energy into heat energy, so as to achieve the effect of heating, at the same time, the temperature sensor 5 can monitor the temperature inside the heating pad body 1 in real time (the temperature sensor 5 is an NTC thermistor probe), and transmit the signal to the controller 4, and then the controller 4 can automatically control the temperature of the heating wire 2 according to the signal, then when the temperature of the surface of the heating pad body 1 is too high, the memory metal spring 12 absorbs heat, the temperature rises and reaches the transition temperature, the memory metal spring 12 will shrink, so as to change its shape, and drive the movable contact switch 13 to separate from the fixed contact switch 14, so as to disconnect the circuit and stop the heating of the heating pad body 1, reduce the safety hidden trouble, and when the temperature decreases to the safe range, the memory metal spring 12 restores the shape, can drive the movable contact switch 13 to reset and contact with the fixed contact switch 14, re-power on the heating pad body 1, so as to automatically control the temperature of the surface of the heating pad body 1.

[0031] Example two: different from example one, in this embodiment, the heat reflecting layer 16 is arranged to effectively reflect the heat of the heating wire 2 upwards, improve the heat energy conversion efficiency, for details, refer to Figure 1 and Figure 3 It is shown that the upper part of the inside of the heating pad body 1 is provided with an insulating layer 8, and the upper surface of the insulating layer 8 is bonded with a heat preservation layer 9, the side away from the insulating layer 8 of the heat preservation layer 9 is provided with a heat reflecting layer 16, and the upper surface of the heat reflecting layer 16 is bonded with a fireproof layer 10.

[0032] The heat reflecting layer 16 can effectively reflect the heat of the heating wire 2 upwards, improve the heat energy conversion efficiency, make the heating pad body 1 temperature rise faster, at the same time, the heat preservation layer 9 can avoid the rapid loss of heat, improve the heat preservation effect of the heating pad body 1, and the fireproof layer 10 can improve the fireproof performance of the heating pad body 1.

[0033] Example three: different from example two, in this embodiment, the telescopic rod 6 and the elastic support net 7 can improve the supportability of the heating pad body 1, prevent the heating pad body 1 from deforming after long time use, for details, refer to Figure 1 、 Figure 3 and Figure 6 It is shown that the bottom of the inner wall of the heating pad body 1 is fixedly connected with the telescopic rod 6 at equal angles, the outer side of the telescopic rod 6 is sleeved with an outer supporting spring, the top of the four telescopic rods 6 is fixedly connected with the elastic support net 7, and the four telescopic rods 6 are respectively distributed at the four corners of the bottom of the inner wall of the heating pad body 1.

[0034] When the user sits on the heating pad body 1, the telescopic rod 6 and the outer supporting spring are arranged to buffer the pressure received by the heating pad body 1, guarantee the stability during the heating process, and the elastic supporting net 7 can improve the supporting elasticity and the acting force when the heating pad body 1 is stressed, and prevent the heating pad body 1 from being deformed after long-time use.

[0035] The contents not described in detail in the specification belong to the prior art known to the person skilled in the art.

[0036] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic temperature control heating pad, comprising a heating pad body (1), the bottom of the inner wall of the heating pad body (1) is provided with a heating wire (2), and the right side of the heating pad body (1) is connected with a power line (3), and a controller (4) is installed between the power line (3) and the heating pad body (1). characterized in that The rear side of the bottom of the inner wall of the heating pad body (1) is fixed with a temperature sensor (5), the right side of the bottom of the inner wall of the heating pad body (1) is fixedly connected with a support frame (11), and the inner side of the support frame (11) is provided with a connecting plate (15). The left side of the connecting plate (15) and the inner wall of the support frame (11) are installed with a memory metal spring (12), and the right side of the connecting plate (15) is bolted with a movable contact switch (13), and the right side of the inner wall of the support frame (11) is bolted with a fixed contact switch (14).

2. The automatic temperature control heating pad of claim 1, wherein: The memory metal spring (12) is made of nickel-titanium alloy material, the right end of the memory metal spring (12) is fixedly connected with the left side of the connecting plate (15), and the movable contact switch (13) and the fixed contact switch (14) are corresponding in position.

3. The automatic temperature control heating pad of claim 1, wherein: The heating wire (2) is electrically connected to the fixed contact switch (14) through a wire, and the temperature sensor (5) is electrically connected to the controller (4) through a wire.

4. The automatic temperature control heating pad of claim 1, wherein: The upper part of the inside of the heating pad body (1) is provided with an insulating layer (8), and the upper surface of the insulating layer (8) is bonded with a heat preservation layer (9).

5. The self-regulating heating mat of claim 4, wherein: The side of the heat preservation layer (9) away from the insulating layer (8) is provided with a heat reflecting layer (16), and the upper surface of the heat reflecting layer (16) is bonded with a fireproof layer (10).

6. The automatic temperature control heating pad of claim 1, wherein: The bottom of the inner wall of the heating pad body (1) is fixedly connected with a telescopic rod (6) at equal angles, the outer side of the telescopic rod (6) is sleeved with an outer supporting spring, and the top of the four telescopic rods (6) is fixedly connected with an elastic supporting net (7).

7. The automatic temperature control heating pad of claim 6, wherein: The four telescopic rods (6) are respectively distributed at the four corners of the bottom of the inner wall of the heating pad body (1).

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