Patent ID: 12245338

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference toFIGS.1-3, a support frame of a thin electric heating band60according to a first embodiment of the present invention comprises: a body10, multiple first blades20, multiple second blades30, four fixing sheets40, and four defining elements50. In this embodiment, four first blades20and eight second blades30are provided.

The body10includes a base12, multiple supporting arms14radially extending from the base12. The four first blades20and the eight second blades20are elongated and made of insulation materials (such as Mica), wherein the four first blades20and the eight second blades20are intersected, each first blade20and each second blade30are positioned on each supporting arm14, and each first blade20is proximate to any two adjacent second blades30. Each first blade20includes multiple first spaced recesses22defined on each of two sides thereof, and each second blade30includes multiple second spaced recesses32formed on each of two sides thereof. The thin electric heating band60is engaged in each first spaced recess22and each second spaced recess32from the inside out in a spider web shape, thus positioning the thin electric heating band60.

In the first embodiment, the four first blades20are arranged on the body10evenly, and any two adjacent second blades30are defined between any two adjacent first blades20, wherein a number of the multiple first blades20and the multiple second blades30is increased or decreased based on using requirements.

The four fixing sheets40are made of rigid insulation material and are elongated, wherein the insulation material is any one of Bakelite, ceramics, and other materials. Each fixing sheet40is stacked on each first blade20and includes multiple spaced notches42defined on each of two sides of each fixing sheet40, wherein each spaced notch42communicates with each first spaced recess22laterally so that the electric heating band60is engaged in each spaced notch42to avoid producing a cutting effect to the each first blade20, thus enhancing a positioning reliability of the electric heating band60.

Each first blade20includes an air facing fringe24defined on a first side thereof, and each first blade20includes an air shadow fringe26defined on a second side thereof, wherein each defining element50is fixed on the air shadow fringe26of each first blade20, each defining element50is made of rigid insulation material and is in a wire shape, and the rigid insulation material of each defining element50is any one of Bakelite, ceramics, and other materials so that each defining element50obtains heat-resistant insulation. A first end of each defining element50is connected with a first end of each first blade20away from the base12, a second end of each defining element50is connected with the air shadow fringe26of each first blade20, and each defining element50is close to each fixing sheet40, such that the electric heating band60is stopped by each first spaced recess22and each second spaced notch42, thus enhancing the positioning reliability of the electric heating band60.

When an air flow moves to the electric heating band60along the body10and faces to the air shadow fringe26of each first blade20, each fixing sheet40supports the electric heating band60so that vibration of the electric heating band60does not produce a cutting effect to each first blade20and each fixing sheet40, and the electric heating band60supports any two adjacent first blades20to reduce the cutting effect of the electric heating band60to any two adjacent second blades30, hence the electric heating band60does not contact each supporting arm14to enhance the positioning reliability of the electric heating band60and to avoid short circuit of the electric heating band60.

Each defining element50is configured to stop a part of the electric heating band60located on the air shadow fringe26of each first blade20so that when the electric heating band60is pulled by the air flow to move to each first spaced recess22and each second spaced recess42, the electric heating band60does not move away from each first spaced recess22and each second spaced recess42, and the electric heating band60does not detach from each first blade20and each fixing sheet40, thus enhancing the positioning reliability of the electric heating band60.

Furthermore, each defining element50includes a first hooking portion52formed on a first end thereof, and each defining element50includes a second hooking portion54formed on a second end thereof, wherein the first hooking portion52hooks with the first end of each first blade20away from the base12, and the second hooking portion54hooks with the air shadow fringe26of each first blade20, thus positioning each defining element50.

With reference toFIG.4, a support frame of a thin electric heating band60of a second embodiment different from that of the first embodiment comprises: each defining element50including a wire core56made of metal, and each defining element50also including a protective sleeve58configured to cover the wire core56and to provide heat-resistant insulation to the wire core56, wherein the protective sleeve58is made of Bakelite or ceramics.

While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.