Soft rubber constant-temperature heating pad

Abstract

The utility model belongs to the technical field of aquarium equipment, and particularly relates to a soft rubber constant-temperature heating pad which comprises a carbon paste heating body, an aluminum plate, two thermistors, a double-color lamp, a circuit board and a protection box. The carbon paste heating body is attached to the aluminum plate, the two thermistors and the two-color lamp are installed on the circuit board, the heating pad has the temperature control function and the working state display function which are not achieved by an existing aquarium heating pad of the same type, the requirement of a user for functional diversification of the aquarium heating pad is met, the circuit board is protected through the protection box, and the service life of the aquarium heating pad is prolonged. The problem that the circuit board is scrapped due to glue erosion in the injection molding process is effectively avoided, meanwhile, four corners of the protection box are used for positioning, it is ensured that the heating body is located in the middle of the product after injection molding, the temperatures of the front face and the back face of the heating pad are consistent, and the production quality and heating uniformity of the product are improved; the accuracy of temperature detection is ensured, and a more stable water temperature environment is provided for aquatic creatures.

Description

Technical Field

[0001] This utility model belongs to the field of aquarium equipment technology, specifically relating to a soft rubber constant temperature heating pad. Background Technology

[0002] Maintaining a suitable water temperature is crucial for the survival and health of aquatic life in aquarium keeping. Currently, aquarium heating pads on the market have several shortcomings. Firstly, aquarium heating pads are scarce and have limited functionality, mostly offering only basic heating. This is because adding more functions requires circuit boards, which makes it difficult to achieve a thin and lightweight design, failing to meet modern consumer aesthetic demands. Secondly, existing injection molding processes are complex, making it difficult to ensure the heating element is centered during production, affecting heating uniformity. Furthermore, circuit boards are easily damaged by the adhesive during injection molding, resulting in a high scrap rate. These problems limit the expansion of aquarium heating pad functionality, failing to meet the diverse needs of aquarists, and increasing production costs and usage risks. Utility Model Content

[0003] To address the problems mentioned in the background section, this invention provides a soft rubber constant temperature heating pad with working status display, constant temperature protection, and dry-burn protection functions, improving the practicality and safety of aquarium heating pads and creating a stable and suitable living environment for aquatic life.

[0004] Structural composition: A soft rubber constant temperature heating pad mainly consists of a carbon paste heating element, an aluminum plate, two thermistors (one for dry burning protection and the other for temperature detection), a dual-color lamp, a circuit board, and a protective box for protecting the circuit board.

[0005] Connection and Position Relationships: The carbon paste heating element is tightly bonded to the aluminum plate, which conducts the heat generated by the carbon paste heating element. Two thermistors are fixed to the circuit board; one thermistor is in close contact with the heating element to monitor its temperature and provide dry-burn protection, while the other thermistor detects the water temperature for constant-temperature protection. A dual-color LED is mounted on the circuit board, displaying the heating pad's operating status to the user through a light-transmitting area on the casing. The circuit board is located inside a protective box made of high-temperature resistant nylon reinforced with fiber. The four corners of the protective box are used for positioning during injection molding, ensuring the heating element is centered in the product after injection molding. The protective box also has pre-drilled spaces for the LED and thermistors to ensure their proper functioning.

[0006] The carbon paste heating element generates heat when energized, and the aluminum plate evenly conducts this heat to heat the water in the aquarium. A thermistor for temperature detection monitors the water temperature in real time. When the water temperature reaches the set maximum temperature (25.5 degrees Celsius), the circuit board controls the carbon paste heating element to stop heating, achieving constant temperature protection. A thermistor for dry-burn protection monitors the heating element temperature in real time. If it detects that the heating element is in a dry-burning state and the temperature is too high, the circuit board immediately cuts off the power to prevent fire. A dual-color indicator light shows red during heating and green when a constant temperature is reached, clearly showing the heating pad's working status to the user.

[0007] Compared with the prior art, the beneficial effects of this utility model are:

[0008] Multifunctional: The heating pad of this utility model has temperature control and working status display functions, which are not available in existing aquarium heating pads of the same type, thus meeting users' needs for multifunctional aquarium heating pads.

[0009] Improved production quality: Using a protective box to protect the circuit board effectively avoids the problem of the circuit board being scrapped due to being damaged by the glue during the injection molding process. At the same time, the four corners of the protective box are used for positioning to ensure that the heating element is located in the center of the product after injection molding, so that the temperature of the front and back of the heating pad is consistent, thereby improving the production quality and heating uniformity of the product.

[0010] Precise temperature detection: The protective box has reserved spaces for lights and thermistors, ensuring the accuracy of temperature detection and providing a more stable water temperature environment for aquatic life. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a partial structural schematic diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0015] In the picture:

[0016] 1. Carbon paste heating element; 2. Aluminum plate; 3. Temperature detection thermistor; 4. Dry-burn protection thermistor; 5. Dual-color lamp; 6. Circuit board; 7. Protective box. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1

[0019] like Figure 1-3 As shown;

[0020] A soft rubber constant temperature heating pad includes a heating pad body.

[0021] This implementation plan addresses the technical problems existing in the prior art, as disclosed in the background section above: "Currently, aquarium heating pads on the market have many shortcomings. On the one hand, aquarium heating pads are scarce and have limited functions, mostly only possessing simple heating capabilities. This is because to achieve more functions, circuit boards need to be added to the product, which makes it difficult to achieve a thin and lightweight appearance, failing to meet modern consumers' aesthetic demands. On the other hand, existing injection molding processes are complex, making it difficult to ensure the heating element is centered during production, affecting heating uniformity; simultaneously, circuit boards are easily damaged by the adhesive during injection molding, resulting in a high product scrap rate. These problems limit the expansion of aquarium heating pad functions, failing to meet the diverse functional needs of aquarium keepers, and also increasing production costs and usage risks." In practical terms, this problem is clearly real and difficult to solve. Therefore, to address this technical problem, a soft rubber constant temperature heating pad is provided.

[0022] like Figure 1-3 As shown in the figure;

[0023] In conjunction with the above, it also includes a carbon paste heating element 1, an aluminum plate 2, a temperature detection thermistor 3, a dry-burn protection thermistor 4, a dual-color lamp 5, a circuit board 6, and a protective box 7, all disposed inside the heating pad body; the carbon paste heating element 1 is attached to the aluminum plate 2, the temperature detection thermistor 3 and the dual-color lamp 5 are mounted on the circuit board 6, and the circuit board 6 is located inside the protective box 7.

[0024] The dry-burning protection thermistor 4 is closely attached to the carbon paste heating element 1, and the temperature detection thermistor 3 is used to monitor the water temperature.

[0025] The dual-color light 5 is used to indicate the working status of the heating pad; it displays a red light when heating and a green light when the temperature is constant.

[0026] The protective box 7 is made of high-temperature resistant nylon reinforced with fiber. The protective box 7 has reserved spaces for a dual-color lamp 5 and a temperature detection thermistor 3, and the four corners of the protective box 7 are used for positioning during the injection molding process.

[0027] The heating pad's maximum heat preservation temperature is set to 25.5 degrees Celsius, and it achieves constant temperature protection and dry-burn protection functions through temperature control;

[0028] Manufacturing: The carbon paste heating element is first produced, in two sizes to meet different heating power requirements. Then, an aluminum plate is bonded to the carbon paste heating element to ensure good thermal conductivity. Next, two thermistors and a dual-color LED are mounted on a circuit board and connected to enable their respective functions. A protective box is made of high-temperature resistant nylon reinforced with fiber, with pre-drilled spaces for the LED and thermistors in the box according to design requirements. The positioning structure of the protective box is then set in the injection mold.

[0029] Injection Molding Process: Due to the difficulty in securing the power cord, horizontal injection molding cannot be used. Therefore, a vertical injection molding process is employed, directly applying adhesive to both sides of the circuit board. During injection molding, the heating element and the circuit board containing the thermistor and dual-color LED are first placed in a protective box. The four corners of the protective box are used for positioning in the injection mold, ensuring the heating element is suspended and centered. One side of the heating element is first coated and secured, then the product is flipped over, and the other side is coated to form a complete heating pad product. During the injection molding process, parameters such as injection pressure, temperature, and time are strictly controlled to ensure injection quality.

[0030] Instructions for use: When using this soft rubber thermostatic heating pad, install it in a suitable location in the aquarium, ensuring full contact with the water and a secure installation. After connecting to a power source, the heating pad will begin working. Depending on the temperature requirements of the aquarium organisms, the heating pad can maintain the water temperature within a suitable range via an external controller (if available) or the product's preset temperature settings. Users can observe the heating pad's working status by observing the color of the dual-color indicator light: a red light indicates heating is in progress, and a green light indicates a constant temperature state. During use, regularly check the heating pad's working status and the aquarium's water temperature to ensure the aquarium organisms are living in a suitable environment.

[0031] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. 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 described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A soft rubber constant temperature heating pad, comprising a heating pad body, characterized in that, It also includes a carbon paste heating element (1), an aluminum plate (2), a temperature detection thermistor (3), a dry-burn protection thermistor (4), a dual-color lamp (5), a circuit board (6), and a protective box (7) disposed inside the heating pad body; the carbon paste heating element (1) is attached to the aluminum plate (2), the temperature detection thermistor (3) and the dual-color lamp (5) are mounted on the circuit board (6), and the circuit board (6) is located inside the protective box (7).

2. The soft rubber constant temperature heating pad according to claim 1, characterized in that, The dry-burning protection thermistor (4) is in close contact with the carbon paste heating element (1), and the temperature detection thermistor (3) is used to monitor the water temperature.

3. The soft rubber constant temperature heating pad according to claim 1, characterized in that, The dual-color light (5) is used to display the working status of the heating pad. It displays a red light when heating and a green light when the temperature is constant.

4. The soft rubber constant temperature heating pad according to claim 1, characterized in that, The protective box (7) is made of high-temperature resistant material with nylon fiber reinforcement. The protective box (7) has reserved space for a dual-color lamp (5) and a temperature detection thermistor (3). The four corners of the protective box (7) are used for positioning during the injection molding process.

5. A soft rubber constant temperature heating pad according to any one of claims 1-4, characterized in that, The heating pad has a maximum insulation temperature of 25.5 degrees Celsius, and achieves constant temperature protection and dry-burn protection functions through temperature control.

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