Electric blanket

Abstract

The utility model discloses an electric blanket, which comprises a surface layer, a bottom layer and a conductive heating sheet arranged between the surface layer and the bottom layer, a plurality of holes are uniformly arranged on the conductive heating sheet, and the holes are distributed in a honeycomb shape. The blanket core of the electric blanket adopts the conductive heating sheet, and the conductive heating sheet is uniformly provided with the plurality of holes, so that materials can be saved, the heating is uniform, the coverage area is large, and the use of the whole blanket core is not influenced when a small part of the whole blanket core is damaged due to the fact that the whole electric blanket is a heating sheet in the use process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric blanket, concretely relates to an electric blanket. BACKGROUND

[0002] Electric blanket is an important part of people's daily life, people can use electric blanket to increase the warmth when sleeping, electric blanket can produce heat energy after being electrified, so that people can keep warm for a long time when sleeping at night after electrifying the electric blanket, various electric blankets on the market, the inner blanket core basically adopts electric heating wire, the electric heating wire adopts the serpentine structure mostly, when the electric heating wire breaks in the use process, the whole will be damaged, the uneven heating and insufficient heating area problems are prone to appear in the use process, and the existing temperature control almost has only two grades, that is, high temperature grade and low temperature grade, the temperature of the electric blanket cannot be adjusted when being in the high temperature grade or the low temperature grade. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of electric blankets, including surface layer, bottom layer and the conductive heating sheet being arranged between two layers, the conductive heating sheet is evenly provided with a plurality of holes, the hole is arranged in honeycomb shape, the conductive heating sheet is equipped with temperature sensor, the temperature sensor is connected with controller, the controller is equipped with temperature display screen and temperature adjusting knob, temperature sensor's placement is existing more mature technology, therefore not in this case to be described, controller includes shell, shell is covered with cover, shell is equipped with single-chip microcontroller and other related components.

[0004] The above technical purpose of the utility model is realized by the following technical scheme:

[0005] An electric blanket, including surface layer, bottom layer and the conductive heating sheet being arranged between two layers, the conductive heating sheet is evenly provided with a plurality of holes, the hole is arranged in honeycomb shape, the conductive heating sheet is equipped with temperature sensor, the temperature sensor is connected with controller, the controller is equipped with temperature display screen and temperature adjusting knob, temperature sensor's placement is existing more mature technology, therefore not in this case to be described, controller includes shell, shell is covered with cover, shell is equipped with single-chip microcontroller and other related components.

[0006] The utility model discloses a temperature sensor detects temperature, and then shows the temperature on the temperature display screen, and then according to the display temperature, manual rolling temperature adjustment knob is carried out, thereby adjusting output current, thereby adjusting the temperature of electric blanket, satisfy the demand of different customers, and the blanket core of electric blanket adopts the electric heating sheet, the electric heating sheet is graphene material, a plurality of holes are evenly arranged on the electric heating sheet, and the hole can save materials, and the heating is evenly covered with large area, and in the use process, since the whole is a heating sheet, and a small part appears damage, and the use of the whole blanket core is not affected.

[0007] The holes are arranged in a honeycomb shape, and the holes can be hexagonal, rhombic or other special-shaped holes.

[0008] Preferably, the temperature adjustment knob comprises a rotating wheel, a potentiometer, a fixed bearing and a rotating shaft, an installation opening is formed in the top of the controller, the rotating wheel is arranged in the installation opening, an installation hole is formed in the center of the rotating wheel, the rotating shaft is arranged in the installation hole, one end of the rotating shaft is fixedly connected with the knob of the potentiometer, and the other end of the rotating shaft is fixedly connected with the inner ring of the fixed bearing; the potentiometer is fixed to the inner top wall of the controller, and the fixed bearing is fixed to the inner top wall of the controller.

[0009] The utility model discloses a manual rolling rotating wheel, thereby driving the potentiometer to rotate, thereby controlling the size of output current, thereby adjusting the temperature of electric blanket.

[0010] Preferably, a fixed ring is arranged on the inner wall of the controller, the rotating shaft is hollow, one end of the knob of the potentiometer is arranged in the rotating shaft, and the other end of the knob is arranged in the fixed ring; a detachable structure is arranged between the rotating shaft and the knob of the potentiometer, the detachable structure comprises an annular clasp, a pressing spring and a pressing key, an annular groove is formed in the inner side wall of the rotating shaft along the circumferential direction, the annular clasp is arranged in the annular groove, the pressing spring is arranged between the annular clasp and the annular groove, and the pressing key is arranged on the annular clasp and extends to the outer side of the rotating shaft through the side wall of the rotating shaft.

[0011] The utility model discloses a temperature sensor detects temperature, and then shows the temperature on the temperature display screen, and then according to the display temperature, manual rolling temperature adjustment knob is carried out, thereby adjusting output current, thereby adjusting the temperature of electric blanket, satisfy the demand of different customers, and the blanket core of electric blanket adopts the electric heating sheet, the electric heating sheet is graphene material, a plurality of holes are evenly arranged on the electric heating sheet, and the hole can save materials, and the heating is evenly covered with large area, and in the use process, since the whole is a heating sheet, and a small part appears damage, and the use of the whole blanket core is not affected.

[0012] Preferably, the fixing ring has three or more sealing rings arranged in an array along the axial direction, which clamp the other end of the potentiometer, making the whole unit more secure.

[0013] Preferably, the outer side wall of the rotating wheel has a plurality of anti-slip strips arranged in a circular array, with gaps formed between the anti-slip strips. The side of the mounting port of the controller is provided with an anti-accidental touch mechanism, which can lock the gap to prevent the rotating wheel from rotating. The anti-accidental touch mechanism includes a fixing block, a compression spring, a slider, a push button, a connecting rod, and a card. The fixing block is fixed to the upper surface of the controller and has a groove. The slider is located in the groove. Two compression springs are located at the bottom of the slider. One end of the compression spring is fixedly connected to the slider, and the other end is fixedly connected to the bottom of the groove. The side wall of the slider has an automatic guide slot, which is heart-shaped. One end of the connecting rod is located in the automatic guide slot, and the other end is rotatably connected to the fixing block. The push button is located at the top of the slider, and the card is located at the bottom of the slider, with the card facing the gap.

[0014] This invention uses a slider to compress a spring, causing the swing arm to slide to the top of the irregularly shaped guide slot. This causes the card to extend out of the slot and lock into the gap. When needed, pressing the slider causes the swing arm to slide to the bottom of the irregularly shaped guide slot, retracting the card into the slot. This prevents accidental activation of the knob and makes the device safer to use.

[0015] Preferably, the controller further includes an over-temperature protection module, which comprises a normally closed switch SB1, a normally open switch SB2, a solid-state relay K1, and a general-purpose relay K2. One end of the normally closed switch SB1 is connected to the live wire, and the other end of the normally closed switch SB1 is connected to one end of the normally open switch SB2, one end of the normally open contact of the solid-state relay K1, and one end of the normally open contact of the general-purpose relay K2. The other end of the normally open switch SB2 is connected to one end of the coil of the general-purpose relay K2 and the other end of the normally open contact of the solid-state relay K1. The other end of the coil of the general-purpose relay K2 is connected to the neutral wire and the power supply module, and the other end of the normally open contact of the general-purpose relay K2 is connected to the power supply module. One end of the coil of the solid-state relay K1 is connected to the output port of the controller, and the other end is grounded. The over-temperature protection module also includes an indicator light L110, one end of which is connected to the output port of the controller, and the other end is grounded. The controller contains a microcontroller.

[0016] This invention allows the electric blanket to operate by pressing SB2, which closes the ordinary relay K2 and activates the power module. When the controller outputs a relay control signal, the indicator light illuminates and the solid-state relay K1 closes. Releasing SB2 restores power. When the microcontroller detects a temperature exceeding 65°C, the solid-state relay K1 and the ordinary relay K2 disconnect, thus achieving power-off and enhancing safety.

[0017] Preferably, the wiring of the conductive heating element is zoned and concentrated at the edge. The conductive heating element uses copper wire and silicone wire. The wiring is 3cm / 5cm away from the left and right edges, and 10cm away from the top edge. All wiring is then gathered on the right side and listed in parallel, with a corner 10cm away from the top edge.

[0018] Electric blankets come in single and double sizes. The single size has two zones, one above the other, while the double size has four zones, one above the other and one to the left and right. Each zone is equipped with a temperature sensor.

[0019] The electric blanket uses a 65-degree power-off protection switch, providing double safety protection;

[0020] The blanket can be used with heat on both sides and is compatible with left and right power outlets;

[0021] 24V low-voltage power supply;

[0022] Double-sided heat-pressed fabric, lightweight and thin overall.

[0023] In summary, the beneficial effects of this utility model are as follows:

[0024] 1. The core of the electric blanket of this utility model adopts a conductive heating element, which is made of graphene material. The conductive heating element has a number of holes evenly opened on it. By opening the holes, materials can be saved, the heating is uniform and the coverage area is large. At the same time, since the whole is a heating element, if a small part of it is damaged, it will not affect the use of the whole blanket core.

[0025] 2. This utility model detects the temperature using a temperature sensor and displays it on a temperature display screen. Then, based on the displayed temperature, the temperature adjustment knob is manually rolled to adjust the output current, thereby adjusting the temperature of the electric blanket to meet the needs of different customers.

[0026] 3. This utility model uses the pressing of the squeeze key to compress the pressing spring, thereby driving the annular retaining ring to move. This causes the center of the annular retaining ring to approach the center of the annular groove. When they are at the same center, the annular retaining ring is concealed within the annular groove, allowing the potentiometer knob to be inserted into the rotating shaft. When pressing stops, the pressing spring drives the annular retaining ring to return to its original position, locking the annular retaining ring against the side wall of the potentiometer knob. This completes the detachable connection between the potentiometer and the rotating shaft. This method is convenient for installation and facilitates future potentiometer replacement.

[0027] 4. This utility model uses a slider to compress the spring, and at the same time, the swing arm slides to the top of the irregular guide slot, thereby causing the card to extend out of the slot and be locked in the gap. When needed, the slider is pressed, and the swing arm slides to the bottom of the irregular guide slot, and the card retracts into the slot, thus preventing accidental contact with the knob and making it safer to use.

[0028] 5. By pressing SB2, the ordinary relay K2 closes, and the power module works. When the microcontroller outputs a relay control signal, the indicator light illuminates, and the solid-state relay K1 closes. Releasing SB2 turns on the power. When the microcontroller detects a temperature exceeding 65°C, the solid-state relay K1 and the ordinary relay K2 open, thus achieving power-off and making it safer to use. Attached Figure Description

[0029] Figure 1 This is an overall schematic diagram of the electric blanket of this utility model;

[0030] Figure 2 This is a utility model Figure 1 An enlarged view of point A;

[0031] Figure 3 This is a cross-sectional schematic diagram of the electric blanket of this utility model;

[0032] Figure 4 This is a cross-sectional schematic diagram of the anti-accidental touch mechanism of this utility model;

[0033] Figure 5 This is a front cross-sectional view of the card retracting into the groove of this utility model;

[0034] Figure 6 This is a cross-sectional view of the back of the card retracting into the groove of this utility model;

[0035] Figure 7 This is a cross-sectional schematic diagram of the temperature adjustment knob of this utility model;

[0036] Figure 8 This is a utility model Figure 7 An enlarged view of point B;

[0037] Figure 9 This is a schematic diagram of the annular retaining ring of this utility model retracting into the rotating shaft;

[0038] Figure 10 This is a schematic diagram of the annular retaining ring of this utility model;

[0039] Figure 11 This is a schematic diagram of the over-temperature protection module of this utility model;

[0040] Figure 12This is a schematic diagram of the conductive heating element of the single-person electric blanket of this utility model;

[0041] Figure 13 This is a schematic diagram of the conductive heating element of the double electric blanket of this utility model.

[0042] The following specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] Example

[0045] like Figure 1 , 3 As shown, an electric blanket includes a top layer 1, a bottom layer 2, and a conductive heating element 3 disposed between the two layers. The conductive heating element 3 has a plurality of holes 30 evenly distributed on it, and the holes 30 are arranged in a honeycomb pattern. A temperature sensor is disposed inside the conductive heating element 3, and the temperature sensor is connected to a controller 5. The controller 5 is provided with a temperature display screen 6 and a temperature adjustment knob 7.

[0046] like Figures 7-10As shown, the temperature adjustment knob 7 includes a rotating wheel 71, a potentiometer 72, a fixed bearing 73, and a rotating shaft 74. The top of the controller 5 has a mounting opening 75. The rotating wheel 71 is disposed within the mounting opening 75, and a mounting hole 76 is formed in the center of the rotating wheel 71. The rotating shaft 74 passes through and is fixed within the mounting hole 76. One end of the rotating shaft 74 is fixedly connected to the knob of the potentiometer 72, and the other end is fixedly connected to the inner ring of the fixed bearing 73. The potentiometer 72 is fixed to the inner top wall of the controller 5, and the fixed bearing 73 is fixed to the inner top wall of the controller 5. A retaining ring 501 is provided on the inner wall of the controller 5. The interior of the rotating shaft 74 is hollow, and one end of the potentiometer 72's knob extends into the rotating shaft. The rotating shaft 74 is located inside the other end of the retaining ring 501. A detachable structure 90 is provided between the rotating shaft 74 and the knob of the potentiometer 72. The detachable structure 90 includes an annular retaining ring 901, a pressing spring 902, and a pressing key 903. An annular groove 741 is formed on the inner sidewall of the rotating shaft 74 along the circumferential direction. The annular retaining ring 901 is located in the annular groove 741. The pressing spring 902 is located between the annular retaining ring 901 and the annular groove 741. The pressing key 903 is located on the annular retaining ring 901 and extends through the sidewall of the rotating shaft 74 to the outside of the rotating shaft 74. The pressing key 903 is arranged opposite to the pressing spring 902. The retaining ring 501 has three or more sealing rings 502 arranged in an array along the axial direction.

[0047] like Figures 4-6 The outer circumferential wall of the rotating wheel 71 is provided with a plurality of anti-slip strips 711, and gaps 712 are formed between the anti-slip strips 711. An anti-accidental touch mechanism 8 is provided on the side of the mounting port 75 of the controller 5. The anti-accidental touch mechanism 8 can lock the gaps 712 to prevent the rotating wheel 71 from rotating. The anti-accidental touch mechanism 8 includes a fixing block 81, a compression spring 82, a slider 83, a press button 84, a connecting rod 85, and a clip 86. The fixing block 81 is fixed to the upper surface of the controller 5, and a groove 87 is formed on the fixing block 81. The slider 83... 3. Two compression springs 82 are located at the bottom of the slider 83 within the slide groove 87. One end of each compression spring 82 is fixedly connected to the slider 83, and the other end is fixedly connected to the bottom of the slide groove 87. An automatic guide slot 88 is provided on the side wall of the slider 83. One end of the connecting rod 85 is located within the automatic guide slot 88, and the other end is rotatably connected to the fixing block 81. The pressing button 84 is located at the top of the slider 83, and the card 86 is located at the bottom of the slider 83, with the card 86 facing the gap 712.

[0048] like Figure 11The controller 5 is further equipped with an over-temperature protection module 9. The over-temperature protection module 9 includes a normally closed switch SB1, a normally open switch SB2, a solid-state relay K1, and a general-purpose relay K2. One end of the normally closed switch SB1 is connected to the live wire, and the other end of the normally closed switch SB1 is connected to one end of the normally open switch SB2, one end of the normally open contact of the solid-state relay K1, and one end of the normally open contact of the general-purpose relay K2. The other end of the normally open switch SB2 is connected to one end of the coil of the general-purpose relay K2 and the other end of the normally open contact of the solid-state relay K1. The other end of the coil of the general-purpose relay K2 is connected to the neutral wire and the power supply module, and the other end of the normally open contact of the general-purpose relay K2 is connected to the power supply module. One end of the coil of the solid-state relay K1 is connected to the output port of the controller, and the other end is grounded. The over-temperature protection module 9 also includes an indicator light L110, one end of which is connected to the output port of the controller, and the other end is grounded.

[0049] like Figures 12-13 As shown, the wiring of the conductive heating element 3 is concentrated at the edge. The conductive heating element 3 uses copper wire and silicone wire. The wiring is 3cm / 5cm away from the left and right edges, and 10cm away from the top edge. All wiring is gathered on the right side and listed in parallel. There is a corner 10cm away from the top edge. The electric blanket is divided into single and double sizes. The single size has two areas, one above and one below, and the double size has four areas, one above, one below, one to the left and one to the right. Each area is equipped with a temperature sensor.

[0050] Working principle: As shown in 1-13, when using this utility model, pressing SB2 closes the ordinary relay K2, the power module works, and the electric blanket works. Pressing the slider 83 causes the connecting rod to slide to the bottom of the irregular guide slot 88, and the card 86 retracts into the slide groove 87. The temperature sensor detects the temperature and displays it on the temperature display screen 6. Then, according to the displayed temperature, the temperature adjustment knob 7 is rolled to adjust the output current, thereby adjusting the temperature of the electric blanket to meet the customer's needs. When the controller outputs a relay control signal, the indicator light illuminates, the solid-state relay K1 closes, SB2 is released, and power is supplied. When the microcontroller detects a temperature exceeding 65°C... During output, solid-state relay K1 and ordinary relay K2 are disconnected, thus achieving power-off and making use safer. When the slider 83 is not needed, the compression spring 82 contracts, and the connecting rod slides to the top of the irregular guide slot 88, thereby driving the card 86 to extend out of the slot and lock onto the gap 712 to prevent accidental contact. At the same time, the blanket core of the electric blanket uses a conductive heating element made of graphene material. The conductive heating element has several holes evenly opened on it. By opening the holes, material can be saved, and the heating is uniform and covers a large area. During use, since the whole is a heating element, if a small part is damaged, it will not affect the use of the whole blanket core.

Claims

1. An electric blanket, characterized in that, It includes a top layer (1), a bottom layer (2) and a conductive heating element (3) disposed between the two layers. The conductive heating element (3) has a number of holes (30) evenly distributed on it, and the holes are arranged in a honeycomb pattern.

2. The electric blanket according to claim 1, characterized in that, The conductive heating element (3) is made of graphene material, and the holes can be hexagonal.

3. An electric blanket according to claim 1, characterized in that, The conductive heating element (3) is equipped with a temperature sensor, which is connected to a controller (5). The controller (5) is equipped with a temperature display screen (6) and a temperature adjustment knob (7). The temperature adjustment knob (7) includes a rotating wheel (71), a potentiometer (72), a fixed bearing (73), and a rotating shaft (74). The top of the controller (5) is provided with an installation port (75). The rotating wheel (71) is located in the installation port (75). The center of the rotating wheel (71) is provided with an installation hole (76). The rotating shaft (74) is inserted and fixed in the installation hole (76). One end of the rotating shaft (74) is fixedly connected to the knob of the potentiometer (72), and the other end is fixedly connected to the inner ring of the fixed bearing (73). The potentiometer (72) is fixed on the inner top wall of the controller (5), and the fixed bearing (73) is fixed on the inner top wall of the controller (5).

4. An electric blanket according to claim 3, characterized in that, The controller (5) has a fixing ring (501) on its inner wall. The inside of the rotating shaft (74) is hollow. One end of the knob of the potentiometer (72) extends into the rotating shaft (74), and the other end is located in the fixing ring (501). A detachable structure (90) is provided between the rotating shaft (74) and the knob of the potentiometer (72).

5. An electric blanket according to claim 4, characterized in that, The detachable structure (90) includes an annular retaining ring (901), a pressing spring (902), and a pressing key (903). The inner sidewall of the rotating shaft (74) has an annular groove (741) along the circumferential direction. The annular retaining ring (901) is located in the annular groove (741). The pressing spring (902) is located between the annular retaining ring (901) and the annular groove (741). The pressing key (903) is located on the annular retaining ring (901) and extends through the sidewall of the rotating shaft (74) to the outside of the rotating shaft (74). The pressing key (903) is arranged opposite to the pressing spring (902).

6. An electric blanket according to claim 4, characterized in that, The retaining ring (501) has three or more sealing rings (502) arranged in an axial direction.

7. An electric blanket according to claim 3, characterized in that, The outer wall of the rotating wheel (71) has a circumferential array of several anti-slip strips (711), and gaps (712) are formed between the anti-slip strips (711). The side of the mounting port (75) of the controller (5) is provided with an anti-accidental touch mechanism (8), which can lock the gap (712) to prevent the rotating wheel (71) from rotating.

8. An electric blanket according to claim 7, characterized in that, The anti-accidental touch mechanism (8) includes a fixed block (81), compression springs (82), a slider (83), a press button (84), a connecting rod (85), and a card (86). The fixed block (81) is fixed to the upper surface of the controller (5). A groove (87) is provided on the fixed block (81). The slider (83) is located in the groove (87). Two compression springs (82) are located at the bottom of the slider (83). One end of each compression spring (82) is connected to the bottom of the controller (5). The slider (83) is fixedly connected, and the other end is fixedly connected to the bottom of the groove (87). An automatic guide slot (88) is provided on the side wall of the slider (83). One end of the connecting rod (85) is located in the automatic guide slot (88), and the other end is rotatably connected to the fixed block (81). The pressing button (84) is located on the top of the slider (83), and the card (86) is located on the bottom of the slider (83). The card (86) faces the gap (712).

9. An electric blanket according to claim 3, characterized in that, The controller (5) is also equipped with an over-temperature protection module (9). The over-temperature protection module (9) includes a normally closed switch SB1, a normally open switch SB2, a solid-state relay K1, and a common relay K2. One end of the normally closed switch SB1 is connected to the live wire. The other end of the normally closed switch SB1 is connected to one end of the normally open switch SB2, one end of the normally open contact of the solid-state relay K1, and one end of the normally open contact of the common relay K2. The other end of the normally open switch SB2 is connected to one end of the coil of the common relay K2 and the other end of the normally open contact of the solid-state relay K1. The other end of the coil of the common relay K2 is connected to the neutral wire and the power supply module. The other end of the normally open contact of the common relay K2 is connected to the power supply module. One end of the coil of the solid-state relay K1 is connected to the output port of the controller, and the other end is grounded. The over-temperature protection module (9) also includes an indicator light L110. One end of the indicator light L110 is connected to the output port of the controller, and the other end is grounded.

10. An electric blanket according to claim 9, characterized in that, Electric blankets come in single and double sizes. The single size has two zones, one above the other, while the double size has four zones, one above the other and one to the left and right. Each zone is equipped with a temperature sensor.

Images