A Z-connection-based electric blanket coupler

Abstract

This utility model provides an electric blanket coupler based on a Z-shaped connection, relating to the field of electric heating product technology. It includes: a coupler housing, a heating wire, a PCB adapter board, a heating wire fixing slot, and connecting pins. The heating wire, PCB adapter board, heating wire fixing slot, and connecting pins are disposed within the coupler housing, which is used to fix the heating wire, PCB adapter board, heating wire fixing slot, and connecting pins. The heating wire is disposed within the heating wire fixing slot, which is used to fix the heating wire. The connecting pins, heating wire, and PCB adapter board are connected sequentially. The heating wire includes an inner wire and an outer wire. The inner and outer wires are connected in a Z-shape to trigger overcurrent protection, improving the accuracy and safety of current control. This utility model, through the application of the Z-shaped connection, makes current changes more sensitive and controllable, thereby improving the accuracy and safety of current control.

Description

Technical Field

[0001] This utility model relates to the field of electric heating product technology, and in particular to an electric blanket coupler based on a Z-type connection. Background Technology

[0002] An electric blanket coupler is a device used to connect the power source of an electric blanket to the heating wire. It can effectively transmit current, so that the electric blanket generates heat after being powered on. The Z-type connection refers to a special wiring method. With this connection, the current can flow into the heating wire in a specific path, which improves the safety and stability of the electric blanket.

[0003] The electric blanket coupler is an important device that connects the power supply and heating wire of the electric blanket. It is responsible for effectively transmitting the current from the power supply to the heating wire and realizing the heating function. With the continuous development of the electric blanket market and the increasing demands of consumers for product safety, the traditional electric blanket connection method has potential safety hazards such as poor contact, uneven heating and short circuits. Therefore, it is particularly necessary to develop an electric blanket coupler that can optimize the current flow path.

[0004] However, existing electric blanket couplers suffer from inaccurate overcurrent protection mechanisms and untimely responses. They cannot detect resistance changes in real time, and the protection cannot be triggered quickly when the equipment malfunctions, increasing the risk of equipment damage. In addition, existing electric blanket couplers are lacking in current control accuracy, which can easily lead to overheating or uneven heating, resulting in insufficient temperature control and failing to meet the requirements of high safety and high performance. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model embodiment is to provide an electric blanket coupler based on the Z-connection method, which can solve the problems of inaccurate overcurrent protection mechanism and untimely response of existing electric blanket couplers. They cannot detect resistance changes in real time, and the protection cannot be triggered quickly when the equipment fails, which increases the risk of equipment damage. In addition, existing electric blanket couplers are relatively lacking in current control accuracy, and are prone to overheating or uneven heating, resulting in insufficient temperature control effect and failing to meet the technical problems of high safety and high performance requirements.

[0006] This utility model embodiment proposes an electric blanket coupler based on a Z-type connection, including: a coupler housing, a heating wire, a PCB adapter board, a heating wire fixing groove, and connecting pins.

[0007] The heating wire, the PCB adapter board, the heating wire fixing slot, and the connecting pin are disposed inside the coupler housing, and the coupler housing is used to fix the heating wire, the PCB adapter board, the heating wire fixing slot, and the connecting pin; The heating wire is disposed in the heating wire fixing groove, and the heating wire fixing groove is used to fix the heating wire. The connecting pin, the heating wire, and the PCB adapter board are connected in sequence; The heating wire includes an inner heating wire and an outer heating wire; The inner and outer wires of the heating wire are connected in a Z-shape to trigger overcurrent protection, thereby improving the accuracy and safety of current control.

[0008] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: In this embodiment of the invention, the various components of the coupler, such as the heating wire, fixing slot, and PCB adapter board, are compactly integrated, facilitating installation and maintenance, and improving the service life and reliability of the equipment. By connecting the inner and outer wires of the heating wire in a Z-shape, precise overcurrent protection and current control are achieved. When a short circuit occurs between the inner and outer wires of the heating wire, the resistance drops rapidly and triggers the overcurrent protection mechanism, effectively preventing the equipment from overheating or being damaged. The application of the Z-shaped connection method makes current changes more sensitive and controllable, thereby improving the accuracy and safety of current control. Attached Figure Description

[0009] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention. Throughout the drawings, the same reference numerals denote the same components. Obviously, the drawings described below are merely some embodiments of this invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of an electric blanket coupler based on a Z-type connection provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of a control circuit provided in an embodiment of the present invention. Detailed Implementation

[0011] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0012] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this utility model.

[0013] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention.

[0014] Reference manual attached Figure 1 The diagram shows a schematic of the structure of an electric blanket coupler based on a Z-type connection according to an embodiment of the present invention.

[0015] Reference manual attached Figure 2 The diagram shows a schematic of the structure of a control circuit provided in an embodiment of the present invention.

[0016] The present invention provides a structure for an electric blanket coupler based on a Z-type connection, comprising: a coupler housing, a heating wire, a PCB adapter board, a heating wire fixing slot, and connecting pins.

[0017] The coupler housing is a part of the coupler, usually located inside the device, and serves as the main structural support. The heating wire is the core component in an electric blanket that generates heat; it is typically made of resistive material. When current passes through the heating wire, the resistive material generates heat due to the current flow, thus heating the electric blanket. The PCB adapter board is a part of a printed circuit board (PCB) used for electrical connections. In an electric blanket coupler, the PCB adapter board is typically used to connect different electrical components (such as heating wires, control circuits, sensors, etc.) to ensure the transmission of current and signals within the device. The heating wire mounting slot is a component used to fix the position of the heating wire and is usually installed inside the coupler. The connection pins are pin components used for electrical connections, typically used to connect the coupler to an external power supply or electrical device (such as an electric blanket controller).

[0018] The heating wire, PCB adapter board, heating wire fixing slot, and connecting pins are housed inside the coupler housing. The coupler housing is used to fix the heating wire, PCB adapter board, heating wire fixing slot, and connecting pins.

[0019] The heating wire is placed in the heating wire fixing groove, which is used to fix the heating wire.

[0020] Connect the connector pins, heating wires, and PCB adapter board in sequence.

[0021] Heating wire consists of inner heating wire and outer heating wire.

[0022] The inner and outer wires of the heating wire are connected in a Z-shape to trigger overcurrent protection, thereby improving the accuracy and safety of current control.

[0023] In this embodiment of the invention, the total resistance of the heating wire after the inner and outer wires are connected in a Z-shape is R, and the resistance of the inner wire = the resistance of the outer wire = R / 2. When the inner and outer wires short-circuit due to overheating at any point in the head, middle, or tail of the heating wire, the total resistance decreases by 50%, the overcurrent protection mechanism is activated, and the wire stops working.

[0024] In one possible implementation, it also includes: a coupler base.

[0025] The coupler housing has multiple fixing holes.

[0026] The bottom shell and the middle shell of the coupler are connected by various fixing holes.

[0027] It should be noted that by setting multiple fixing holes on the inner shell of the coupler and connecting the bottom shell and the inner shell of the coupler through these fixing holes, the overall structural stability of the coupler is enhanced, preventing the internal components from loosening or being damaged due to external forces or vibrations during use, thus ensuring the long-term reliable operation of the electric blanket.

[0028] In one possible implementation, it also includes a fixing component.

[0029] The fixing components include: a snap and a fixing pin terminal.

[0030] The fixed pin terminal is used to fix the connecting pin.

[0031] It should be noted that by designing the inverted and fixed pin terminals, the stability of the connecting pins is ensured. The connection between the fixed pin terminals and the connecting pins not only effectively prevents the pins from loosening or falling off during use, but also improves the stability and reliability of the electrical connection. This ensures that the coupler can maintain good electrical contact during long-term operation, reduces the risk of failure, and improves the overall safety and service life of the equipment.

[0032] In one possible implementation, the PCB adapter board contains a control circuit.

[0033] The control circuit includes: power supply terminal L, first connection port H1, inner thread head, outer thread head, inner thread tail, outer thread tail, heating wire, second connection port H2, first transistor T1, second transistor T2, first resistor R10, and GND terminal.

[0034] The power terminal L is connected to the first connection port H1.

[0035] The power terminal L, the first connection port H1, the internal thread head, the heating wire, the internal thread tail, and the second connection port H2 are connected in sequence.

[0036] The power terminal L, the first connection port H1, the external thread head, the heating wire, the external thread tail, and the second connection port H2 are connected in sequence.

[0037] The second connection port H2, the first transistor T1, the second transistor T2, the first resistor R10, and the GND terminal are connected in sequence.

[0038] It should be noted that by setting up control circuits inside the PCB adapter board, a complete current control and protection system is formed. This not only ensures the current flow and precise control of the electric blanket, but also improves the stability and efficiency of electrical connections through the reasonable layout of various components. The cooperation between transistors and resistors helps to protect the circuit and avoid the risk of overcurrent or short circuit, while enhancing the response speed and reliability of the circuit and ensuring the long-term stable operation of the equipment.

[0039] In one possible implementation, the control circuit further includes: a first silicon controlled rectifier (SCR1), a second resistor (R5), a third resistor (R6), and a fourth resistor (R8).

[0040] The first thyristor SCR1, the second resistor R5, the third resistor R6, the fourth resistor R8, the first resistor R10, and the GND terminal are connected in sequence.

[0041] It should be noted that by setting the first thyristor SCR1 and multiple resistive elements (such as R5, R6, and R8) in the control circuit, a flexible current control mechanism is formed. The thyristor SCR1 can adjust the current path in real time, effectively controlling the flow and disconnection of current, thereby enhancing the overcurrent protection function of the electric blanket. The reasonable arrangement of resistors helps to accurately adjust the current, avoiding situations where the current is too high or too low, ensuring that the electric blanket operates within a safe and stable current range, and improving the safety and reliability of the equipment.

[0042] In one possible implementation, the control circuit further includes: a second thyristor SCR2 and a fifth resistor R7.

[0043] The second thyristor SCR2, the fifth resistor R7, the fourth resistor R8, the first resistor R10, and the GND terminal are connected in sequence.

[0044] In one possible implementation, the control circuit further includes a sixth resistor R9 and a first capacitor C9.

[0045] The sixth resistor R9 and the first capacitor C9 are connected to form a filter circuit.

[0046] The filter circuit is connected in parallel with the first resistor R10.

[0047] It should be noted that by adding a sixth resistor R9 and a first capacitor C9 to the control circuit to form a filter circuit, high-frequency noise and interference in the current are effectively reduced, ensuring a more stable current. The filter circuit is connected in parallel with the first resistor R10, which further optimizes the stability and accuracy of the current, prevents current fluctuations from affecting the normal operation of the electric blanket, improves the anti-interference ability and reliability of the system, and ensures that the electric blanket can work stably and efficiently in different usage environments.

[0048] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: In this embodiment of the invention, the various components of the coupler, such as the heating wire, fixing slot, and PCB adapter board, are compactly integrated, facilitating installation and maintenance, and improving the service life and reliability of the equipment. By connecting the inner and outer wires of the heating wire in a Z-shape, precise overcurrent protection and current control are achieved. When a short circuit occurs between the inner and outer wires of the heating wire, the resistance drops rapidly and triggers the overcurrent protection mechanism, effectively preventing the equipment from overheating or being damaged. The application of the Z-shaped connection method makes current changes more sensitive and controllable, thereby improving the accuracy and safety of current control.

[0049] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the preferred embodiments; however, those skilled in the art can fully understand this utility model without these details. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and not to limit it. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coupler for an electric blanket based on a Z-connection, characterized in that, include: Coupler housing, heating wire, PCB adapter board, heating wire fixing slot and connecting pins; The heating wire, the PCB adapter board, the heating wire fixing slot, and the connecting pin are disposed inside the coupler housing, and the coupler housing is used to fix the heating wire, the PCB adapter board, the heating wire fixing slot, and the connecting pin; The heating wire is disposed in the heating wire fixing groove, and the heating wire fixing groove is used to fix the heating wire. The connecting pin, the heating wire, and the PCB adapter board are connected in sequence; The heating wire includes an inner heating wire and an outer heating wire; The inner and outer wires of the heating wire are connected in a Z-shape to trigger overcurrent protection, thereby improving the accuracy and safety of current control.

2. The electric blanket coupler based on the Z-connection method according to claim 1, characterized in that, Also includes: Coupler base shell; The coupler has multiple fixing holes on its housing. The bottom shell and the middle shell of the coupler are connected through the respective fixing holes.

3. The electric blanket coupler based on the Z-connection method according to claim 1, characterized in that, Also includes: Fixed components; The fixing component includes: a buckle and a fixing pin terminal; The fixed pin terminal is connected to the connecting pin, and the fixed pin terminal is used to fix the connecting pin.

4. The electric blanket coupler based on the Z-connection method according to claim 1, characterized in that, The PCB adapter board has a control circuit inside. The control circuit includes: a power terminal L, a first connection port H1, an inner thread head, an outer thread head, an inner thread tail, an outer thread tail, a heating wire, a second connection port H2, a first transistor T1, a second transistor T2, a first resistor R10, and a GND terminal. The power terminal L is connected to the first connection port H1; The power terminal L, the first connection port H1, the inner thread head, the heating wire, the inner thread tail, and the second connection port H2 are connected in sequence. The power terminal L, the first connection port H1, the external thread head, the heating wire, the external thread tail, and the second connection port H2 are connected in sequence; The second connection port H2, the first transistor T1, the second transistor T2, the first resistor R10, and the GND terminal are connected in sequence.

5. The electric blanket coupler based on the Z-connection method according to claim 4, characterized in that, The control circuit further includes: a first thyristor SCR1, a second resistor R5, a third resistor R6, and a fourth resistor R8; The first thyristor SCR1, the second resistor R5, the third resistor R6, the fourth resistor R8, the first resistor R10, and the GND terminal are connected in sequence.

6. The electric blanket coupler based on the Z-connection method according to claim 5, characterized in that, The control circuit also includes: a second thyristor SCR2 and a fifth resistor R7; The second thyristor SCR2, the fifth resistor R7, the fourth resistor R8, the first resistor R10, and the GND terminal are connected in sequence.

7. The electric blanket coupler based on the Z-connection method according to claim 4, characterized in that, The control circuit also includes: a sixth resistor R9 and a first capacitor C9; The sixth resistor R9 and the first capacitor C9 are connected to form a filter circuit; The filter circuit is connected in parallel with the first resistor R10.

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