Food warming pad

1 . A food warming pad, comprising a heating pad and a heating wire,

wherein the heating pad is a flexible pad, a bottom surface of the heating pad is provided with a wiring groove, a bottom of the wiring groove is defined with a winding notch;

the heating wire is sleeved by a flexible sleeve, the flexible sleeve is installed in the wiring groove, the flexible sleeve is distributed along an extension direction of the wiring groove, a bottom of the flexible sleeve is protruded outside the winding notch, and the flexible sleeve and the wiring groove are hot-melt-molded into one piece;

wherein when the food warming pad is placed upside down relative to a normal operating position of the food warming pad, an edge of the winding notch is protruded vertically with respect to the bottom surface of the heating pad, the bottom surface of the heating pad define a recessed area with respect to the edge of the winding notch, and the recessed area does not overlap with the winding notch.

2 . The food warming pad according to claim 1 , wherein the heating pad is a silicone pad, and the flexible sleeve is a silicone sleeve.

3 . The food warming pad according to claim 1 , wherein the bottom surface of the heating pad is further provided with a plurality of foot pads, and a distance that a bottom surface of each of the plurality of foot pads protrudes with respect to the bottom surface of the heating pad is greater than a distance that the edge of the winding notch protrudes with respect to the bottom surface of the heating pad.

4 . The food warming pad according to claim 1 , wherein a power supply is provided at an edge of the heating pad, and two ends of the heating wire are electrically connected to the power supply.

5 . The food warming pad according to claim 1 , wherein a cross-section of the wiring groove is arc-shaped or square, and a cross-section of the flexible sleeve is circular.

6 . The food warming pad according to claim 1 , wherein a thickness of the flexible sleeve is not smaller than 2 mm, and an outer diameter of the flexible sleeve is not smaller than 5 mm.

7 . The food warming pad according to claim 1 , wherein the wiring groove comprises a plurality of mutually parallel straight segments and a plurality of winding segments, and the plurality of straight segments are connected to the plurality of winding segments alternately.

8 . The food warming pad according to claim 1 , wherein a continuous housing is provided below the winding notch, the continuous housing is distributed along the extension direction of the wiring groove, two side edges of the continuous housing are respectively hot-melted and integrally formed with two side edges of the winding notch, and the continuous housing establishes a retention on the flexible sleeve and the wiring groove.

9 . The food warming pad according to claim 1 , wherein a plurality of segmented housings are provided below the winding notch, the plurality of segmented housings are sequentially distributed and spaced apart from each other along the extension direction of the wiring groove, two side edges each of the plurality of segmented housings are respectively hot-melt-molded with two side edges of the winding notch, and the plurality of segmented housings establish retentions for the flexible sleeve and the wiring groove.

10 . A food warming pad, comprising a heating pad and a heating wire, wherein the heating pad is a flexible pad, a surface of the heating pad is provided with a wiring groove distributed in a winding pattern, the wiring groove is defined with a winding notch; the heating wire is sleeved in a flexible sleeve, the flexible sleeve carrying the heating wire is installed in the wiring groove, the flexible sleeve is distributed along an extension direction of the wiring groove, a portion of the flexible sleeve is protruded with respect to a surface of the winding notch, and the flexible sleeve and the wiring groove are an integrated structure;

wherein when the food warming pad is placed upside down relative to a normal operating position of the food warming pad, an edge of the winding notch is protruded vertically with respect to a bottom surface of the heating pad, the bottom surface of the heating pad define a recessed area with respect to the edge of the winding notch, and the recessed area does not overlap with the winding notch.

11 . The food warming pad according to claim 10 , wherein a continuous housing is provided on the winding notch, the continuous housing is distributed along the extension direction of the wiring groove, two side edges of the continuous housing are respectively integrated with two side edges of the winding notch, and the continuous housing is configured to limit positions of the flexible sleeve and the wiring groove.

12 . The food warming pad according to claim 10 , wherein a plurality of segmented housings are provided on the winding notch, the plurality of segmented housings are sequentially distributed and spaced apart from each other along the extension direction of the wiring groove, two side edges each of the plurality of segmented housings are respectively integrated with two side edges of the winding notch, and the plurality of segmented housings are configured to limit positions of the flexible sleeve and the wiring groove.

13 . The food warming pad according to claim 10 , wherein the heating pad is further provided with a plurality of foot pads, and a distance that a bottom surface of each of the plurality of foot pads protrudes with respect to the bottom surface of the heating pad is greater than a distance that an edge of the winding notch protrudes with respect to the bottom surface of the heating pad.