CN210899671U - Heating ring easy to curl and position - Google Patents
Heating ring easy to curl and position Download PDFInfo
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- CN210899671U CN210899671U CN201921720381.5U CN201921720381U CN210899671U CN 210899671 U CN210899671 U CN 210899671U CN 201921720381 U CN201921720381 U CN 201921720381U CN 210899671 U CN210899671 U CN 210899671U
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Abstract
The utility model discloses a heating coil which is easy to curl and position, comprising a heating wire component and a supporting and fixing ring; the heating wire component comprises a first mica strip and a heating wire; the first mica strip is provided with a first side and a second side which are oppositely arranged, and the first mica strip is provided with a plurality of positioning holes which are arranged at intervals along the length direction of the first mica strip; the heating wire is provided with a plurality of heating fins, and the heating fins of the heating wire penetrate through the corresponding positioning holes from the first side of the first mica strip and are exposed out of the second side; the supporting fixed ring is provided with an annular fixed surface; the first side of the first mica strip is curled and molded along the annular fixed molding surface so that the heating wire component is loaded on the supporting fixed ring; and the heating wire and the support shaping ring are insulated from each other. So, it has solved the cracked problem of coiling, and the heater subassembly is fixed a position on supporting the design and circles the firm reliable, and simultaneously, its structure is simple relatively, easily production preparation, and the air-out temperature is even, has promoted product quality and production yield, is suitable for batch production and popularization and application.
Description
Technical Field
The utility model belongs to the technical field of the heater field and specifically relates to indicate the heating coil of location that easily curls, the heating of its mainly used electrical apparatus.
Background
Traditional electric heater, warm fan etc. it needs to increase the heating structure usually, for example: the heating body is formed by combining the heating tube with the radiating fin, the volume is large, the air flow is greatly blocked, the ventilation effect is influenced, the contact surface area is limited, and the heating efficiency of the air flow is low.
Later, the design of using resistance heating wire to replace the heating tube has appeared on the market, which improves the wind resistance, heating efficiency and so on, for example: the method is characterized in that rows of through holes are arranged on a straight mica sheet, the resistance heating wire is protruded outwards at the position of each through hole, and the resistance heating wire is effectively positioned on the mica sheet, so that a straight strip-shaped resistance heating wire plate is formed; when the straight-bar-shaped resistance heating wire plate is used for an electric heater and a heating fan, usually, a plurality of straight-bar-shaped resistance heating wire plates can only be arranged at intervals one by one along a ring shape and cannot be independently curled into a ring shape, because the porous mica sheet is easy to break when being curled; however, the air conditioner has the defects of troublesome whole installation, uneven outlet air temperature, unsatisfactory air resistance and the like.
Later, an annular radial heating wire assembly is provided, and comprises a plastic support, a mica sheet, a mica strip and a heating wire, wherein the heating wire is arranged along the bottom of the mica strip and extends out in a radial shape in a clamping manner at two sides of the mica strip, the mica strip surrounds the periphery of the plastic support, one end of the mica strip is inserted into the plastic support, and the other end of the mica strip is contacted with the inner side of the mica strip so that the mica strip and the plastic support form a space; this kind of structure, though the problem that the mica strip curls has been solved, however, still easily there is the crack when curling, and, its heater can only follow two outsides on the mica strip around arranging, make the location of heater inconvenient, and simultaneously, because the plastic support is not high temperature resistant, it need be with the help of the mica strip, the plastic support is kept apart, it is very inconvenient to assemble like this, and, its supporting effect is unsatisfactory, carrying, bump rocking that causes and all probably cause the influence to the joint support steadiness of mica sheet, and then influence the reliability of whole heater subassembly.
Therefore, a new technical solution needs to be developed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides an easily curl the circle that generates heat of location, and it has solved the cracked problem of coiling, and the heater subassembly is fixed a position on supporting the design and circles reliably firmly, and simultaneously, its structure is simple relatively, easily produces the preparation, and the air-out temperature is even, has promoted product quality and production yield, is suitable for batch production and popularization and application.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a heating coil easy to curl and position comprises a heating wire component and a supporting and fixing ring;
the heating wire component comprises a first mica strip and a heating wire; the first mica strip is provided with a first side and a second side which are oppositely arranged, the first mica strip is provided with a plurality of positioning holes which are arranged at intervals along the length direction of the first mica strip, and the positioning holes penetrate through the first side and the second side; the heating wire is provided with a plurality of heating fins, and the heating fins of the heating wire penetrate through the corresponding positioning holes from the first side of the first mica strip and are protruded out of the second side of the first mica strip;
the supporting fixed ring is provided with an annular fixed surface for the heating wire component to be curled and positioned; the first side of the first mica strip is curled and molded along the annular fixed molding surface so that the heating wire component is attached to the supporting fixed ring;
and the heating wire and the support shaping ring are arranged in an insulated manner.
Preferably, the annular fixed surface is an outer annular surface of the supporting fixed ring, the heating wire assembly is curled along the outer annular surface of the supporting fixed ring to be attached to the supporting fixed ring, and the heating fins are arranged towards the outside of the supporting fixed ring.
As a preferable scheme, the annular fixed surface is an inner annular surface of the supporting fixed ring, the heater assembly is curled along the inner annular surface of the supporting fixed ring to be attached to the supporting fixed ring, and the heating fins are arranged towards the inside of the supporting fixed ring.
As a preferable scheme, the annular fixed molding surface is an outer annular surface and an inner annular surface which support the fixed ring; the heating wire components are arranged in two groups, wherein one heating wire component is positioned along the outer annular surface in a curling mode, and the other heating wire component is positioned along the inner annular surface in a curling mode.
As a preferable scheme, the supporting and fixing ring is a metal ring, second mica strips are arranged between the annular fixing surface of the metal ring and the heating wire assembly at intervals, and the second mica strips are curled along the annular fixing surface to be loaded on the supporting and fixing ring.
As a preferred scheme, the supporting and fixing ring is a metal ring, and the annular fixing surface of the metal ring is covered with high-temperature-resistant insulating paint.
Preferably, the supporting and fixing ring is a metal ring, and a passivation layer is formed on an annular fixing surface of the metal ring for insulation.
As a preferable scheme, the positioning holes on the first mica strips are arranged in more than two rows along the wind flow direction, each row of positioning holes are arranged along the length direction of the positioning holes, and the positioning holes in adjacent rows are arranged in a staggered manner one by one.
Preferably, the heating wire is flat.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, concretely speaking, according to the technical scheme, the structure of the heating wire component is improved, and meanwhile, the annular fixed surface supporting the fixed ring is used as the curling surface of the heating wire component, so that the porous first mica strip with the heating wire can easily complete the winding positioning along the annular fixed surface; the heating ring with the structure has the advantages that:
1. the problem of winding fracture is solved;
2. the heating wire component is supported and positioned on the supporting and shaping ring through the annular shaping surface, so that the heating wire component is stable and reliable;
3. the structure is relatively simple, the production and the manufacture are easy, the manufacture process is reliable, the product quality and the production yield are improved, and the method is suitable for batch production and popularization and application;
4. because the heating wire assembly only needs to be supported by the annular fixed surface, the structure of the supporting fixed ring can be designed very simply, the wind flow resistance of the supporting fixed ring can be almost ignored, meanwhile, the heating wire assembly can be flexibly arranged on the inner ring surface and/or the outer ring surface during actual design, the air outlet temperature is uniform, and the use experience is good;
5. one row, two rows or a plurality of rows of positioning holes can be freely arranged on the first mica strip so as to meet the arrangement of a corresponding number of heating wires; when setting up the heater more than two rows, can form the mode of heating step by step along the air current direction, the programming rate is fast, and the air current is heated more evenly, especially, through the dislocation arrangement, has further ensured air-out temperature homogeneity.
Secondly, through the flat filament design, further reduce the heating wire and to the influence that blocks of wind current, simultaneously, can have the broad extension surface along the wind current direction to increase the area of contact with the wind current, the wind current is heated more fast.
Moreover, the first mica strip and the second mica strip can be curled together, so that the overall structural strength is enhanced, and the fracture resistance is better.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is an assembled perspective view of a first embodiment of the present invention;
FIG. 2 is another perspective view of the first embodiment of the present invention;
fig. 3 is a front view of a first embodiment of the present invention;
FIG. 4 is a cross-sectional view of a first embodiment of the present invention;
FIG. 5 is an enlarged partial view of FIG. 4;
FIG. 6 is a diagram of an exploded structure of a first embodiment of the present invention (the heating wire is not shown);
FIG. 7 is a schematic view of an exploded structure of a support fixing ring and a bottom plate according to a first embodiment of the present invention;
FIG. 8 is a partial exploded view of the first embodiment of the present invention;
fig. 9 is a partial structural view of a heating wire according to a first embodiment of the present invention (when not curled);
fig. 10 is a front view of a second embodiment of the present invention;
fig. 11 is a partial sectional view of a second embodiment of the present invention;
fig. 12 is a front view of a third embodiment of the present invention;
fig. 13 is a partial sectional view of a third embodiment of the present invention.
The attached drawings indicate the following:
Positioning hole 21 of the outer first mica strip 20
The outer second mica strip 30 supports the fixing ring 40
Fixing block 42 of bottom plate 41
The inner first mica strip 60 and the inner second mica strip 70.
Detailed Description
Referring to fig. 1 to 13, specific structures of various embodiments of the present invention are shown, and the heating coil easy to be curled and positioned can be widely applied to products such as fans.
A heating coil easy to curl and position comprises a heating wire component and a supporting and fixing ring;
the heating wire component comprises a first mica strip and a heating wire; the first mica strip is provided with a first side and a second side which are oppositely arranged, the first mica strip is provided with a plurality of positioning holes which are arranged at intervals along the length direction of the first mica strip, and the positioning holes penetrate through the first side and the second side; the heating wire is provided with a plurality of heating fins, and the heating fins of the heating wire penetrate through the corresponding positioning holes from the first side of the first mica strip and are protruded out of the second side of the first mica strip;
the supporting fixed ring is provided with an annular fixed surface for the heating wire component to be curled and positioned; the first side of the first mica strip is curled and molded along the annular fixed molding surface so that the heating wire component is attached to the supporting fixed ring;
and the heating wire and the support shaping ring are arranged in an insulated manner.
The heating ring can be implemented in various ways, and three embodiments are described below with reference to fig. 1 to 13.
First, referring to fig. 1 to 9, a specific structure of a first embodiment is shown, in which the annular fixing surface is an outer annular surface of the supporting fixing ring 40, and the heat generating fins are disposed toward an outside of the supporting fixing ring. Specifically, the method comprises the following steps:
the heating wire comprises an outer heating wire 10, an outer first mica strip 20, an outer second mica strip 30 and a supporting and fixing ring 40; wherein:
the outer first mica strip 20 is rolled up as a plate material that can be rolled up; for the outer first mica strip 20, the first side thereof is the inner side and the second side is the outer side; the outer first mica strip 20 is provided with a plurality of positioning holes 21 which are arranged along the self surrounding direction at intervals; the positioning holes 21 can be arranged in one row, or more than two rows are arranged along the front-back direction (when the fan is used, the wind flow direction is indicated) at intervals, correspondingly, the outer heating wire 10 is also arranged in more than two rows, so that the wind can be heated step by step to form a preheating-heating mode, preferably, the positioning holes in two adjacent rows are arranged in a one-to-one staggered mode, the heating is more uniform, the wind flow can be fully contacted with the outer heating wire 10, and the heat can be better conducted to the wind flow. During actual design, the work of one group of heating wires can be realized through circuit board control in the using process, or the work of two groups of heating wires can be realized together, and flexible control can be carried out according to the heating requirement.
As shown in fig. 9, the outer heating wire 10 has a plurality of outer heating fins 11, and here, the outer heating wire 10 is designed to be S-shaped as being continuously extended and connected, so that the extended outer heating fins 11 are n-shaped. The heating wire is preferably flat, is flat and thin, reduces the blocking influence of the heating wire on wind flow as much as possible, and simultaneously has a wider extending surface along the wind flow direction so as to increase the contact area with the wind flow and heat the wind flow faster.
As shown in fig. 4 to 8, the outer second mica strip 30 is a plate material that can be rolled, and the outer heating wire 10 and the support fixing ring 40 are insulated from each other by the separation of the outer second mica strip 30. The outer second mica strip 30 is generally required to be high temperature resistant because it is close to the outer heater 10, where the outer second mica strip 30 can be first curled along the annular fixing surface to be attached to the supporting fixing ring 40. Of course, the outer second mica tape 30 may be stacked inside the heat generating component and then curled along the annular fixing surface (also referred to as the outer annular surface) to be attached to the supporting fixing ring 40, so that the process is simplified. It should be noted that there may be other situations in the form that the outer heating wire 10 and the supporting and fixing ring 40 are insulated from each other, for example: the annular shaping surface of the supporting shaping ring 40 is covered with high-temperature-resistant insulating paint; the support fixing ring 40 is preferably a high temperature resistant metal ring, and may be formed by rolling a metal plate; the annular shaped surface of the metal ring is covered with high-temperature-resistant insulating paint, or a passivation layer is formed on the annular shaped surface of the metal ring for insulation, or the metal ring is covered with the high-temperature-resistant insulating paint.
Here, one end of the support fixing ring 40 is provided with a bottom plate 41, and the bottom plate 41 has a mounting portion for mounting and positioning the entire heating coil (for example, a plurality of mounting holes are arranged at intervals along the bottom plate 41, where the bottom plate 41 is an annular plate, and a plurality of mounting holes are arranged along a circumferential direction of the annular plate). The bottom plate 41 is connected to one end of the supporting and fixing ring 40 through a fixing block 42, and the fixing block 42 is L-shaped and is screwed, welded or glued to the bottom plate 41 and the supporting and fixing ring 40. In the first embodiment, the bottom plate 41, the fixing block 42, and the supporting and fixing ring 40 may be made of galvanized plates, and are easy to be manufactured by stamping. Of course, the base plate and the support fixing ring 40 may be integrally formed. In fact, the mounting application of the whole heating ring is further realized by supporting the fixed ring 40, and the mounting application structure can be changed in many ways, and is not limited to the case of the first embodiment.
Next, the assembly process of the outer heater 10, the outer first mica tape 20, the outer second mica tape 30 and the support fixing ring 40 according to the first embodiment will be described in general:
firstly, manufacturing an outer heating wire 10, a plate of an outer first mica strip 20, an outer second mica strip 30 and a supporting and fixing ring 40;
during assembly, the outer heating fins 11 of the outer heating wire 10 penetrate through the corresponding positioning holes 21 of the plate of the outer first mica strip 20 outwards and are exposed outside the plate of the outer first mica strip 20; then, the outer second mica strip 30 is padded on the inner side of the plate of the outer first mica strip 20 and positioned on the inner side of the outer heating wire 10, and the outer second mica strip 30 can be fixed on the inner side of the plate of the outer first mica strip 20 through screws and the like; and then, the outer heating wire 10, the plate of the outer first mica strip 20 and the outer second mica strip 30 which are integrally connected are positioned along the outer annular surface of the support fixing ring 40 in a surrounding way. When the heating coil is applied subsequently, the whole heating coil can be directly installed through the bottom plate 41.
As shown in fig. 10 to 11, it shows a specific structure of the second embodiment: the main differences between the second embodiment and the first embodiment are as follows: the annular shaped surface is an inner annular surface of the supporting shaped ring 40, and the heating fins are arranged towards the inside of the supporting shaped ring. Specifically, the method comprises the following steps:
the heating coil comprises an inner heating wire 50, an inner first mica strip 60, an inner second mica strip 70 and a supporting and fixing ring 40; wherein:
the inner first mica strip 60 has a plurality of positioning holes arranged at intervals along the self-surrounding direction; for the inner first mica strip 60, its first side is referred to as the outer side and the second side is referred to as the inner side;
the inner heating wire 50 is provided with a plurality of inner heating fins 51, and the inner heating fins 51 inwardly penetrate through the corresponding positioning holes and protrude out of the inner side of the inner first mica strip 60;
the inner second mica strip 70 is a plate material which can be curled, and the inner second mica strip 70 is overlapped on the outer side of the inner heating wire 50 to position the outer side of the inner heating wire 50;
the inner heating wire 50 and the inner first mica strip 60 are positioned on the inner annular surface of the support fixing ring 40 along the surrounding direction of the support fixing ring 40 together with the inner second mica strip 70, and the inner second mica strip 70 is isolated between the inner heating wire 50 and the support fixing ring 40 to achieve insulation.
As shown in fig. 11 to 13, it shows a specific structure of the third embodiment: the main difference between the third embodiment and the first embodiment is that: the annular fixed molding surface is an outer annular surface and an inner annular surface which support the fixed molding ring; the heating wire components are arranged in two groups, one heating wire component is positioned along the outer annular surface in a curling mode, and the other heating wire component is positioned along the inner annular surface in a curling mode. Specifically, the method comprises the following steps:
the heating wire comprises an outer heating wire 10, an outer first mica strip 20, an outer second mica strip 30, an inner heating wire 50, an inner first mica strip 60, an inner second mica strip 70 and a supporting and fixing ring 40; wherein:
the outer first mica strip 20 and the inner first mica strip 60 are respectively provided with a plurality of positioning holes which are arranged at intervals along the self-surrounding direction;
the outer heating wire 10 is provided with a plurality of outer heating fins 11, and the outer heating fins 11 outwards penetrate through corresponding positioning holes of the outer first mica bars 20 and protrude out of the outer first mica bars 20;
the outer second mica strip 30 is stacked on the inner side of the outer heating wire 10 to position the inner side of the outer heating wire 10;
the outer heating wire 10 and the outer first mica strip 20 are positioned around the outer annular surface of the support fixing ring 40 along the surrounding direction of the support fixing ring 40 along with the outer second mica strip 30, and the outer second mica strip 30 is isolated between the outer heating wire 10 and the support fixing ring 40 to achieve insulation.
The inner heating wire 50 is provided with a plurality of inner heating fins 51, and the inner heating fins 51 inwardly penetrate through corresponding positioning holes of the inner first mica bars 60 and protrude out of the inner sides of the inner first mica bars 60;
the inner second mica strip 70 is stacked on the outer side of the inner heating wire 50 to position the outer side of the inner heating wire 50;
the inner heating wire 50 and the inner first mica strip 60 are positioned on the inner annular surface of the support fixing ring 40 along the surrounding direction of the support fixing ring 40 together with the inner second mica strip 70, and the inner second mica strip 70 is isolated between the inner heating wire 50 and the support fixing ring 40 to achieve insulation.
It should be noted that:
in the first to third embodiments, the heating coils are all in a circular ring structure, the supporting and fixing ring 40 is in a circular ring shape, the inner first mica strip 60 and the inner second mica strip 70 are curled into a circular ring shape along the supporting and fixing ring 40, and in consideration of practical application, the inner heating wire 50 and the outer heating wire 10 may not be fully arranged along the circumferential direction, so as to reserve a stepping-down wiring area. In the actual design, the heat generating ring is not limited to a closed ring, and may be a partially opened non-closed ring, such as a major arc, as appropriate.
The utility model is mainly designed by improving the structure of the heating wire component, and simultaneously, the annular fixed surface supporting the fixed ring is used as the curling surface of the heating wire component, so that the porous first mica strip with the heating wire can easily complete the winding positioning along the annular fixed surface; the heating ring with the structure has the advantages that:
1. the problem of winding fracture is solved;
2. the heating wire component is supported and positioned on the supporting and shaping ring through the annular shaping surface, so that the heating wire component is stable and reliable;
3. the structure is relatively simple, the production and the manufacture are easy, the manufacture process is reliable, the product quality and the production yield are improved, and the method is suitable for batch production and popularization and application;
4. because the heating wire assembly only needs to be supported by the annular fixed surface, the structure of the supporting fixed ring can be designed very simply, the wind flow resistance of the supporting fixed ring can be almost ignored, meanwhile, the heating wire assembly can be flexibly arranged on the inner ring surface and/or the outer ring surface during actual design, the air outlet temperature is uniform, and the use experience is good;
5. one row, two rows or a plurality of rows of positioning holes can be freely arranged on the first mica strip so as to meet the arrangement of a corresponding number of heating wires; when setting up the heater more than two rows, can form the mode of heating step by step along the air current direction, the programming rate is fast, and the air current is heated more evenly, especially, through the dislocation arrangement, has further ensured air-out temperature homogeneity.
Secondly, through the flat filament design, further reduce the heating wire and to the influence that blocks of wind current, simultaneously, can have the broad extension surface along the wind current direction to increase the area of contact with the wind current, the wind current is heated more fast.
Moreover, the first mica strip and the second mica strip can be curled together, so that the overall structural strength is enhanced, and the fracture resistance is better.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (9)
1. A heating coil easy to curl and position is characterized in that: comprises a heating wire component and a supporting fixed ring;
the heating wire component comprises a first mica strip and a heating wire; the first mica strip is provided with a first side and a second side which are oppositely arranged, the first mica strip is provided with a plurality of positioning holes which are arranged at intervals along the length direction of the first mica strip, and the positioning holes penetrate through the first side and the second side; the heating wire is provided with a plurality of heating fins, and the heating fins of the heating wire penetrate through the corresponding positioning holes from the first side of the first mica strip and are protruded out of the second side of the first mica strip;
the supporting fixed ring is provided with an annular fixed surface for the heating wire component to be curled and positioned; the first side of the first mica strip is curled and molded along the annular fixed molding surface so that the heating wire component is attached to the supporting fixed ring;
and the heating wire and the support shaping ring are arranged in an insulated manner.
2. A ready-to-curl-position heat ring as in claim 1, wherein: the annular fixed molding surface is an outer annular surface of the supporting fixed molding ring, the heating wire assembly is curled along the outer annular surface of the supporting fixed molding ring so as to be attached to the supporting fixed molding ring, and the heating fins are arranged towards the outer part of the supporting fixed molding ring.
3. A ready-to-curl-position heat ring as in claim 1, wherein: the annular fixed molding surface is an inner annular surface for supporting the fixed molding ring, the heating wire assembly is curled along the inner annular surface for supporting the fixed molding ring to be attached to the supporting fixed molding ring, and the heating fins are arranged towards the inside of the supporting fixed molding ring.
4. A ready-to-curl-position heat ring as in claim 1, wherein: the annular fixed molding surface is an outer annular surface and an inner annular surface which support the fixed molding ring; the heating wire components are arranged in two groups, wherein one heating wire component is positioned along the outer annular surface in a curling mode, and the other heating wire component is positioned along the inner annular surface in a curling mode.
5. A ready-to-curl-position heat-generating ring according to any one of claims 1 to 4, wherein: the support shaping ring is a metal ring, second mica strips are arranged between the annular shaping surface of the metal ring and the heating wire assembly at intervals, and the second mica strips are coiled along the annular shaping surface to be attached to the support shaping ring.
6. A ready-to-curl-position heat-generating ring according to any one of claims 1 to 4, wherein: the supporting and fixing ring is a metal ring, and the annular fixing surface of the metal ring is covered with high-temperature-resistant insulating paint.
7. A ready-to-curl-position heat-generating ring according to any one of claims 1 to 4, wherein: the supporting fixed ring is a metal ring, and a passivation layer is formed on an annular fixed surface of the metal ring for insulation.
8. A ready-to-curl-position heat ring as in claim 1, wherein: the positioning holes in the first mica strips are arranged in more than two rows along the air flow direction, the positioning holes in each row are arranged at intervals along the length direction of the positioning holes, and the positioning holes in adjacent rows are arranged in a staggered mode one by one.
9. A ready-to-curl-position heat ring as in claim 1, wherein: the heating wire is flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921720381.5U CN210899671U (en) | 2019-10-15 | 2019-10-15 | Heating ring easy to curl and position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921720381.5U CN210899671U (en) | 2019-10-15 | 2019-10-15 | Heating ring easy to curl and position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210899671U true CN210899671U (en) | 2020-06-30 |
Family
ID=71312658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921720381.5U Active CN210899671U (en) | 2019-10-15 | 2019-10-15 | Heating ring easy to curl and position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210899671U (en) |
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2019
- 2019-10-15 CN CN201921720381.5U patent/CN210899671U/en active Active
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