Fixing device and electric heating module

Abstract

This invention discloses a fixing device and an electrothermal module. The fixing device includes: a mounting base and a rotating shaft, the rotating shaft being rotatably mounted on the mounting base; a fixing assembly, the fixing assembly including a mounting member and a fixing member, one end of the mounting member being fixedly connected to the rotating shaft, and the other end being a free end, the free end having a mounting position configured to fix one end of the inner frame; the fixing member being disposed on the mounting member, the fixing member being configured to be detachably connected to the support bar, so that the support bar is fixed to the mounting member by the fixing member; and a positioning member, the positioning member being installed on the end of the inner frame away from the mounting position, so that the positioning member is used to fix the support bar when the end of the support bar away from the inner frame rotates to the positioning member. This invention's technical solution is advantageous for fixing double-layer support frames.

Description

Technical Field

[0001] This invention relates to the field of fixing electric heating modules, and particularly to a fixing device and an electric heating module. Background Technology

[0002] Devices such as heaters, hair dryers, and electric hair dryers typically include a housing, a heating module, and a fan. The heating module and fan are housed inside the housing, and the fan is used to blow out the heat generated by the heating module to produce hot air.

[0003] Electric heating modules typically consist of a support frame and an electric heating tape, with the tape wound around the outer perimeter of the support frame. Currently, before winding the heating tape onto the support frame, it is usually necessary to fix the support frame to a clamp before winding the heating tape onto the support frame. However, existing clamps are not ideal, as they can only fix a single-layer support frame and cannot fix a double-layer support frame, making it impossible to wind double-layer support frames. Summary of the Invention

[0004] The main objective of this invention is to provide a fixing device that solves the technical problem of the inability to fix a double-layer support frame.

[0005] To achieve the above objectives, the fixing device proposed in this invention includes:

[0006] The double-layer support frame includes an inner frame and an outer frame. The outer frame includes multiple support bars, one end of which is rotatably connected to the inner frame. The fixing device includes:

[0007] A mounting base and a rotating shaft, wherein the rotating shaft is rotatably mounted on the mounting base;

[0008] A fixing component includes a mounting member and a fixing member. One end of the mounting member is fixedly connected to the rotating shaft, and the other end is a free end. The free end has a mounting position configured to fix one end of the inner frame. The fixing member is disposed on the mounting member and configured to be detachably connected to the support bar so that the support bar is fixed to the mounting member by the fixing member.

[0009] A positioning element is provided, which is installed on the end of the inner frame away from the mounting position, so that the positioning element can fix the support bar when the end of the support bar away from the inner frame rotates to the positioning element.

[0010] Optionally, the number of fasteners is multiple, and the multiple fasteners are disposed on the mounting member and arranged at intervals along the circumference of the mounting member. Each fastener has a clamping space for clamping the support bar; and / or,

[0011] The fastener is formed by bending a metal sheet, and the fastener is detachably connected to the mounting component.

[0012] Optionally, the fixing device further includes a stop component, which corresponds to the mounting position and abuts against the side of the positioning member away from the mounting position, so that the stop component abuts against the double-layer support frame through the positioning member to prevent the inner frame from disengaging from the mounting position.

[0013] Optionally, the support bar includes a connected support bar body and a limiting section, and the end of the support bar body away from the limiting section is connected to the inner frame;

[0014] The positioning component includes a fixing section, the end of which has an assembly groove for mounting the end of the inner frame away from the mounting position, and the peripheral wall of the fixing section has a fixing groove for fixing the limiting section.

[0015] Optionally, the inner frame includes multiple support plates, one end of which has a snap-fit ​​notch extending along the length of the support plate, so that one support plate can be snapped into another support plate along the length of the support plate through the snap-fit ​​notch, and the two snap-fit ​​support plates are arranged crosswise in the width direction. The end of the support plate away from the mounting position has an installation notch, and the side walls of the multiple installation notches enclose an installation space.

[0016] The assembly groove includes an abutment groove extending along the length of a fixed section and a plurality of engaging grooves. The engaging grooves are used to install the notch wall forming the installation notch. The plurality of engaging grooves are arranged at intervals along the circumference of the abutment groove. The plurality of engaging grooves are connected to the abutment groove, and the groove depth of the engaging groove is greater than the groove depth of the abutment groove. The groove wall of the abutment groove is used to abut against the side wall of the installation space facing the opening of the installation space.

[0017] Optionally, the engaging groove is open on the side away from the abutment groove, so that the edge of the support plate can protrude from the engaging groove, and the depth direction of the engaging groove extends through the opposite end faces of the fixing section, so that the end of the support plate away from the mounting position can protrude from the engaging groove; and / or,

[0018] The positioning component further includes an installation section, the radial dimension of which is smaller than that of the fixing section, and the installation section is connected to the end of the fixing section opposite to the assembly position. The length direction of the fixing groove extends through the opposite end faces of the fixing section, so that the two ends of the limiting section can extend out of the fixing groove. The fixing device further includes a pressure ring, which is disposed on the installation section and has a fixing part. The fixing part is used to abut against the end of the limiting section adjacent to the installation section, so that the fixing part can limit the support bar from disengaging from the fixing groove.

[0019] Optionally, the limiting segment has a fixed notch located at the end of the limiting segment away from the support strip;

[0020] The pressure ring includes a connecting ring and a fixing spring. The connecting ring is sleeved on the mounting section. One end of the fixing spring is connected to the connecting ring. The fixing spring has a fixing part. The fixing part is bent into a V-shape by the fixing spring. The side of the fixing part with the apex angle is used to abut against the side wall of the fixing notch so that the fixing part prevents the support bar from rotating out of the fixing groove.

[0021] Optionally, the fixing component further includes an auxiliary support bar, one end of which is connected to the mounting member, and the other end of which extends away from the mounting position. The auxiliary support bar is used to support the inner frame.

[0022] Optionally, the positioning element has a mounting hole that mates with the end of the auxiliary support strip away from the mounting element; and / or,

[0023] The inner frame includes multiple support plates, one end of which has a locking notch extending along the length of the support plate, so that one support plate can be locked onto another support plate along its length through the locking notch, and the two locking support plates are arranged to cross each other in the width direction.

[0024] There are multiple auxiliary support bars, one end of each of the multiple auxiliary support bars is located within the mounting position, and the multiple auxiliary support bars are spaced apart. The auxiliary support bars are used to support the support plate and to limit the displacement of the support plate.

[0025] To achieve the above objectives, the present invention also proposes an electric heating module, which includes a double-layer support frame and an electric heating tape. The double-layer support frame includes an inner frame and an outer frame. The inner frame and the outer frame are fixed by the aforementioned fixing device, and the electric heating tape is wound around the inner frame and the outer frame respectively.

[0026] This invention provides a fixing device in which a rotating shaft is rotatably mounted on a mounting base. One end of a mounting component is connected to the rotating shaft, allowing the mounting component to rotate with the shaft. A mounting position is provided on the free end of the mounting component to fix the inner frame, thus securing the inner frame to the mounting component. A fixing member is provided on the mounting component, allowing the support bar to be fixed to the mounting component. Simultaneously, a positioning member is provided at the end of the inner frame away from the mounting position, allowing the support bar to be fixed to the outside of the inner frame after rotation. Thus, the fixing device can secure the double-layer support frame in different configurations, improving ease of use. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the fixing device of the present invention fixing the double-layer support frame;

[0029] Figure 2 This is a schematic diagram of the structure of the fixing device abutment assembly of the present invention;

[0030] Figure 3 for Figure 2 A magnified view of a section at point I;

[0031] Figure 4 This is a schematic diagram of the fixing structure of the fixing device fixing component of the present invention fixing double-layer support frame from one perspective;

[0032] Figure 5 for Figure 4 Enlarged view of a section at point II;

[0033] Figure 6 This is a schematic diagram of the fixing structure of the fixing device fixing component of the present invention fixing double-layer support frame from another perspective;

[0034] Figure 7 for Figure 6 Enlarged view of a section at point III;

[0035] Figure 8 This is a schematic diagram of the assembly structure of the fixing components, auxiliary support bars, and positioning elements of the fixing device of the present invention from one perspective.

[0036] Figure 9 This is a schematic diagram of the assembly structure of the fixing components, auxiliary support bars, and positioning elements of the fixing device of the present invention from another perspective;

[0037] Figure 10 This is a structural schematic diagram of the positioning component of the fixing device of the present invention from one perspective;

[0038] Figure 11 This is a structural schematic diagram of the positioning component of the fixing device of the present invention from another perspective;

[0039] Figure 12 This is a schematic diagram of the structure of the pressure ring of the fixing device of the present invention;

[0040] Figure 13 This is a schematic diagram of the structure of the fixing component of the fixing device of the present invention;

[0041] Figure 14 This is a schematic diagram of the structure of the double-layer support frame of the fixing device of the present invention;

[0042] Figure 15 This is a schematic diagram of the internal frame of the fixing device of the present invention;

[0043] Figure 16 This is an exploded structural diagram of the inner frame of the fixing device of the present invention.

[0044] Explanation of icon numbers:

[0045]

[0046]

[0047] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0049] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0050] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0051] This invention mainly proposes a fixing device for a double-layer support frame, primarily used for fixing a double-layer support frame for winding electric heating tape. The double-layer support frame includes an outer frame and an inner frame disposed within the outer frame. Both the outer and inner frames are cylindrical, and their ends are of different sizes. The outer frame is formed by multiple support bars, spaced apart from adjacent support bars. One end of each support bar is rotatably connected to the same end of the inner frame, allowing the support bars to be either located on the periphery of the inner frame or at one end of the inner frame after being flipped. When winding the electric heating tape onto the inner frame, the support bars need to be flipped to one end of the inner frame before the electric heating tape is spirally wound onto the inner frame. After winding the inner frame, the support bars are flipped to the periphery of the inner frame, and the electric heating tape is spirally wound onto the outer frame formed by the support bars. The specific structure of the fixing device will be described below.

[0052] Reference Figures 1 to 16 In this embodiment of the invention, the fixing device includes:

[0053] The double-layer support frame includes an inner frame 100 and an outer frame 200. The outer frame 200 includes a plurality of support bars 201, one end of which is rotatably connected to the inner frame 100. The fixing device includes:

[0054] Mounting base 1 and rotating shaft 11, wherein the rotating shaft 11 is rotatably mounted on the mounting base 1;

[0055] The fixing assembly includes a mounting member 21 and a fixing member 22. One end of the mounting member 21 is fixedly connected to the rotating shaft 11, and the other end is a free end 211. The end of the free end 211 has a mounting position 2111, which is configured to fix one end of the inner frame 100. The fixing member 22 is disposed on the mounting member 21 and is configured to be detachably connected to the support bar 201 so that the support bar 201 is fixed to the mounting member 21 by the fixing member 22.

[0056] Positioning element 3 is used to install on one end of the inner frame 100 away from the mounting position 2111, so that the positioning element 3 can fix the support bar 201 when the end of the support bar 201 away from the inner frame 101 is rotated to the positioning element 3.

[0057] Specifically, in this embodiment, the double-layer support frame includes an inner frame 100 and an outer frame 200. The inner frame 100 has a cylindrical overall shape and is hollow to facilitate airflow through its interior. The two ends of the inner frame 100 are of different sizes to allow airflow at different temperatures to better contact the heating tape 300 when it is wrapped around the inner frame 100. The outer frame 200 has a cylindrical overall shape and is formed by multiple support bars 201, allowing the inner frame 100 to be placed within the interior space of the outer frame 200. Adjacent support bars 201 are spaced apart. The support bars 201 can be circular, rectangular, or other shapes.

[0058] The fixing device can take many forms; taking a mounting base 1, a rotating shaft 11, a fixing component, and a positioning element 3 as an example, we will explain the following. The shape of the mounting base 1 can be a cube, cuboid, or cylinder, etc., and there is no specific limitation here. In this embodiment, the mounting base 1 is a bearing seat, and the rotating shaft 11 is rotatably mounted on the bearing seat through a bearing.

[0059] The fixing assembly includes a mounting member 21 and a fixing member 22. The overall shape of the mounting member 21 can be cylindrical, square column, or tubular, etc. This embodiment uses a cylindrical shape as an example. One end of the mounting member 21 is connected to one end of the rotating shaft 11, so that the mounting member 21 can rotate with the rotation of the rotating shaft 11. The end of the mounting member 21 away from the rotating shaft 11 is a free end 211. The end of the free end 211 is provided with a mounting position 2111. The mounting position 2111 is used to fix one end of the inner frame 100, so that the inner frame 100 can be installed on the mounting member 21 through the mounting position 2111. There are various types of mounting positions 2111, such as mounting grooves, mounting notches 106, or formed by multiple claws. For example, when the mounting position 2111 is a mounting groove, the depth of the mounting groove extends along the length direction of the mounting member 21. The depth of the mounting groove is determined according to the requirements. One end of the inner frame 100 is inserted into the mounting groove, and the inner frame 100 is tightly fitted with the mounting groove, so that the inner frame 100 can be fixed through the mounting groove. When the mounting position 2111 is the mounting notch 106, the depth of the mounting notch 106 extends along the length of the mounting member 21. The depth of the mounting notch 106 is determined according to requirements, and the mounting notch 106 has at least two opposing notch walls, so that when one end of the inner frame 100 is inserted into the mounting notch 106, the inner frame 100 can be fixed by the two opposing notch walls. When the mounting position 2111 is formed by multiple claws, the number of claws is three. The three claws are set at the end of the mounting member 21 away from the rotation shaft 11, and the three claws are movably connected to the mounting member 21. At the same time, the three claws are arranged in a triangular pattern. Thus, when the three claws are arranged in a triangular pattern to form the mounting position 2111, after the inner frame 100 is set in the mounting position 2111, the relative positions of the three claws can be adjusted to adjust the size of the mounting position 2111, thereby achieving the purpose of fixing the inner frame 100.

[0060] The fastener 22 is mounted on the mounting member 21 and is used to fix the outer frame 200. The fastener 22 can be of various types, such as an elastic rubber ring, metal ring, clip, or two spring clips. For example, when the fastener 22 is a metal ring, after multiple support bars 201 are mounted on the peripheral wall of the mounting member 21, the metal ring secures the support bars 201 to the mounting member 21, preventing them from detaching from the peripheral surface of the mounting member 21, thus fixing the support bars 201 to the mounting member 21. When the fastener 22 is an elastic rubber ring, the radial dimension of the hollow portion of the rubber ring is smaller than the radial dimension of the mounting member 21 under normal conditions. After multiple support bars 201 are mounted on the peripheral wall of the mounting member 21, the rubber ring can tighten the support bars 201 to the mounting member 21, preventing them from detaching from the peripheral surface of the mounting member 21 under the elastic force of the rubber ring, thus fixing the support bars 201. When the fixing member 22 is a clamp, the clamp can be set on the peripheral wall of the mounting member 21 or inside the mounting member 21, but the clamp needs to extend outside the peripheral wall of the mounting member 21. In this way, the support bar 201 can be fixed to the mounting member 21 by the clamp. When the fixing member 22 is two spring pieces, the two spring pieces are set on the peripheral wall of the mounting member 21, with the sides of the two spring pieces facing each other, and the gap between the two spring pieces is less than the thickness of the support bar 201, so that the two spring pieces can clamp the support bar 201 to the mounting member 21.

[0061] The positioning element 3 is used to fix the support bar 201 to the peripheral wall of the inner frame 100. The overall shape of the positioning element 3 can be plate-shaped, block-shaped, or ring-shaped. For example, when the positioning element 3 is plate-shaped, when the support bar 201 rotates to the peripheral wall of the inner frame 100, the end of the support bar 201 is flush with or slightly protrudes from the end of the inner frame 100 away from the installation position 2111. The plate-shaped positioning element 3 is fixed to one end of the inner frame 100 away from the installation position 2111, so that the support bar 201 can abut against the plate-shaped positioning element 3, so that the positioning element 3 can fix the support bar 201. The plate-shaped positioning plate can be glued to one end of the inner frame 100 away from the installation position 2111, or it can be connected by bolts, etc. For example, when the positioning member 3 is block-shaped, an installation groove is opened on the block-shaped positioning member 3. The installation groove is used to install on the end of the inner frame 100 away from the installation position 2111. A fixing groove 312 is opened on the periphery of the block-shaped positioning member 3. The end of the fixing groove 312 facing the installation position is open. At the same time, the width of the fixing groove 312 is equivalent to the thickness of the support bar 201, or it can be slightly smaller than the thickness of the support bar 201, so that the support bar 201 can be set in the fixing groove 312 through the open end of the fixing groove 312. In this way, the fixing groove 312 can fix the support bar 201. For example, when the positioning element 3 is ring-shaped, the ring-shaped positioning element 3 is elastic. After the support bar 201 is set on the periphery of the inner frame 100, the support bar 201 can be sleeved on the end of the inner frame 100 away from the installation position 2111 by the ring-shaped positioning element 3. The elasticity of the ring-shaped positioning element will press the support bar 201 onto the inner frame 100, so that the support bar 201 can be fixed by the positioning element 3 after rotation.

[0062] It should be noted that the fixing device also includes a rotary drive component 6144, a motor mount 62, and a mounting base 63. The rotary drive component 6144 can be a servo motor or a stepper motor, etc. The rotary drive component 6144 is mounted on the motor mount 62, and both the motor mount 62 and the mounting base 1 are mounted on the mounting base 63. The mounting base 63 is used to increase the height of the fixing components from the ground, making it easier for operators to operate.

[0063] The fixing device of this invention rotatably mounts a rotating shaft 11 onto a mounting base 1. One end of a mounting member 21 is connected to the rotating shaft 11, allowing the mounting member 21 to rotate with the rotating shaft 11. A mounting position 2111 is provided on the free end 211 of the mounting member 21, which is used to fix the inner frame 100, thus securing the inner frame 100 to the mounting member 21. A fixing member 22 is provided on the mounting member 21, allowing the support bar 201 to be fixed to the mounting member 21 via the fixing member 22. Simultaneously, a positioning member 3 is provided at the end of the inner frame 100 away from the mounting position 2111, so that after the support bar 201 rotates to the outside of the inner frame 100, the positioning member 3 can fix the support bar 201 to the outside of the inner frame 100. Thus, the fixing device can fix the double-layer support frame in different configurations, improving ease of use.

[0064] In some examples, such as Figure 1 , Figure 4 , Figure 6 , Figure 9 and Figure 13 As shown, there are multiple fasteners 22, which are disposed on the mounting member 21 and are arranged at intervals along the circumference of the mounting member 21. Each fastener 22 has a clamping space 221 for clamping the support bar 201; and / or,

[0065] The fastener 22 is formed by bending a metal sheet, and the fastener 22 is detachably connected to the mounting component 21.

[0066] In this embodiment, the fixing member 22 is clip-shaped and has a clamping space 221 for clamping the support bar 201. To fix all the support bars 201, the number of fixing members 22 is the same as the number of support bars 201, and multiple fixing members 22 are spaced apart circumferentially along the mounting member 21 so that the support bars 201 can be fixed by the fixing members 22 when positioned circumferentially on the mounting member 21. The fixing member 22 is formed by bending a metal sheet to provide good clamping force. The shape of the clip is not specifically limited; it only needs to have two opposing clamping arms and a connecting arm connecting the opposing clamping arms, so that the fixing member 22 can clamp the support bar 201 through the two clamping arms and connect to the mounting member 21 through the connecting arm. To accommodate different numbers of support bars 201, the fixing member 22 is detachably connected to the mounting member 21 by bolts.

[0067] It should be noted that the peripheral wall of the mounting component 21 is provided with a connecting groove, which extends along the circumference of the mounting component 21, and the fixing component 22 is disposed in the mounting groove.

[0068] It should be noted that, as Figure 13 As shown, to facilitate clamping the support bar 201, the fixing member 22 includes a connecting piece, and a first clamping piece and a second clamping piece connected to the connecting piece. The connecting piece is connected to the mounting member 21. The end of the first clamping piece away from the connecting piece abuts against the end of the second clamping piece away from the connecting piece, so that the first clamping piece, the second clamping piece, and the connecting piece enclose and form the clamping space 221. To improve the stability of clamping the support bar 201,

[0069] The first clamping piece includes a first clamping piece body and a first clamping portion connected together. The end of the first clamping piece body away from the first clamping portion is connected to the connecting piece. The first clamping piece body and the second clamping piece are spaced apart. The first clamping portion is bent into a V-shape, and the bending angle of the first clamping portion abuts against the second clamping piece, so that the first clamping portion, the first clamping piece body, and the second clamping piece enclose the clamping space 221; and / or,

[0070] The second clamping piece includes a second clamping piece body and a second clamping part connected together. The end of the second clamping piece body away from the second clamping part is connected to the connecting piece. The second clamping piece body and the first clamping piece are spaced apart. The second clamping part is bent into a V-shape and the bending angle of the second clamping part abuts against the first clamping piece, so that the second clamping part, the second clamping piece body and the first clamping piece surround and form the clamping space 221.

[0071] In some examples, such as Figure 5 , Figure 6 , Figure 14 As shown, the support bar 201 includes a connected support bar body 2011 and a limiting section 2012. The end of the support bar body 2011 away from the limiting section 2012 is connected to the inner frame 100. The positioning member 3 includes a fixing section 31. The end of the fixing section 31 has an assembly groove for installing the end of the inner frame 100 away from the mounting position 2111. The peripheral wall of the fixing section 31 has a fixing groove 312 for fixing the limiting section 2012.

[0072] An assembly slot is provided at one end of the fixed section 31. The specific shape of the assembly slot is not specifically limited, as long as it allows assembly of the end of the inner frame 100 furthest from the mounting position 2111. After the limiting section 2012 is connected to the support bar body 2011, the edge of the limiting section 2012 can protrude beyond the edge of the support bar body 2011, or it can be flush with the edge of the support bar body 2011. This embodiment uses the example of the limiting section 2012 protruding beyond the edge of the support bar body 2011. After the edge of the limiting section 2012 protrudes beyond the edge of the support bar body 2011, the overall shape of the support bar 201 is L-shaped. Thus, the portion of the limiting section 2012 protruding beyond the support bar body 2011 can be inserted into the assembly slot and fixedly connected via the fixed slot 312.

[0073] In some examples, such as Figure 3 , Figure 10 , Figure 11 , Figure 14 and Figure 16 As shown, the inner frame 100 includes a plurality of support plates 101. One end of each support plate 101 has a locking notch extending along the length direction of the support plate 101, so that one support plate 101 can be locked onto another support plate 101 along the length direction through the locking notch, and the two mutually locking support plates 101 are arranged crosswise in the width direction. The end of each support plate 101 away from the mounting position 2111 has a mounting notch 106, and the side walls of the plurality of mounting notches 106 enclose a mounting space 107.

[0074] The assembly groove includes an abutment groove 313 extending along the length of the fixed section 31 and a plurality of engagement grooves 311. The engagement grooves 311 are used to install the notch wall forming the mounting notch 106. The plurality of engagement grooves 311 are arranged at intervals along the circumference of the abutment groove 313. The plurality of engagement grooves 311 are connected to the abutment groove 313, and the groove depth of the engagement groove 311 is greater than the groove depth of the abutment groove 313. The groove wall of the abutment groove 313 is used to abut against the side wall of the mounting space 107 facing the opening of the mounting space 107.

[0075] The multiple support plates 101 can be three support plates 101, four support plates 101, etc. When there are three support plates 101, the three support plates 101 are respectively a first support plate 102, a second support plate 103, and a third support plate 104. A locking notch is provided at one end of the first support plate 102, the second support plate 103, and the third support plate 104, respectively. The locking notch 1021 of the first support plate 102 is located at the end of the first support plate 102 opposite to the mounting position 2111, and extends along the length of the first support plate 102. The locking notch 1031 is located at the end of the second support plate 103 adjacent to the mounting position 2111. Thus, when the second support plate 103 is engaged with the side wall of the first engagement notch 1021 through the second engagement notch 1031, the second support plate 103 and the first support plate 102 are connected. The opening of the third engagement notch 1041 is located at one end of the third support plate 104 away from the mounting position 2111 and extends along the direction of the mounting position 2111. Thus, the third engagement notch 1041 can engage with the side of the second support plate 103 away from the second engagement notch 1031, thereby connecting the third support plate 104 and the second support plate 103.

[0076] When there are four support plates 101, the support plates 101 are a first support plate 102, a second support plate 103, a third support plate 104, and a fourth support plate 105. The engaging notch can have only one notch wall or two opposing notch walls. This embodiment uses an engaging notch with two opposing notch walls as an example for explanation. The engaging notches include a first engaging notch 1021, a second engaging notch 1031, a third engaging notch 1041, and a fourth engaging notch 1051, etc. The first support plate 102 has a first engaging notch 1021 at one end, which extends along the length of the first support plate 102. The second support plate 103 has a first engaging notch 1032 and a second engaging notch 1031 at both ends, which extend along the length of the second support plate 103. An engaging plate 1033 is provided between the first engaging notch 1032 and the second engaging notch 1031. The engaging plate 1033 is disposed in the first engaging notch 1021, so that the first support plate 102 and the second support plate 103 can be engaged and connected through the first engaging notch 1021 and the engaging plate 1033. The third support plate 104 has a third engaging notch 1041 and a second engaging notch at both ends. The second engaging notch 1042 and the third engaging notch 1041 extend along the length of the third support plate 104. There is an engaging plate 1043 between the second engaging notch 1042 and the third notch. The engaging plate 1043 is disposed in the second engaging notch 1031 and the first engaging notch 1021, so that the engaging plate 1043 can be engaged through the second engaging notch 1031 and the first engaging notch 1021 to achieve connection with the first support plate 102 and the second support plate 103. The fourth support plate 105 has a fourth engagement notch 1051 at one end, which is used to engage with the engagement plate 1043. The end of the fourth support plate 105 away from the fourth engagement notch 1051 is located in the first engagement notch 1021, the second engagement notch 1031, and the third engagement notch 1041. In this way, the first support plate 102, the second support plate 103, the third support plate 104, and the fourth support plate 105 can be connected to each other.

[0077] The overall shape of the abutment groove 313 can be circular. Multiple engaging grooves 311 are arranged circumferentially around the abutment groove 313, with pairs of engaging grooves 311 facing each other circumferentially, so that both sides of the support plate 101 can enter the abutment groove 313. The support plate 101 has mounting notches 106 corresponding to the positions of the abutment groove 313. When multiple support plates 101 are assembled to form an inner frame 100, the notch walls of the multiple mounting notches 106 enclose an installation space 107. The sidewall of the installation space 107 facing the opening of the installation space 107 abuts against the bottom of the abutment groove 313, thus improving the stability of the support plate 101 and the mounting component 21.

[0078] In some examples, such as Figure 3 , Figure 5 , Figure 7 , Figures 10 to 12 As shown, the engaging groove 311 is open on the side away from the abutting groove 313, so that the edge of the support plate 101 can protrude from the engaging groove 311. The depth direction of the engaging groove 311 extends through the opposite end faces of the fixing section 31, so that the end of the support plate 101 away from the mounting position 2111 can protrude from the engaging groove 311; and / or,

[0079] The positioning component 3 further includes an installation section 32, the radial dimension of which is smaller than that of the fixing section 31. The installation section 32 is connected to the end of the fixing section 31 opposite to the assembly position. The length direction of the fixing groove 312 extends through the opposite end faces of the fixing section 31, so that the two ends of the limiting section 2012 can extend out of the fixing groove 312. The fixing device further includes a pressure ring 5, which is disposed on the installation section 32. The pressure ring 5 has a fixing part 521, which is used to abut against the end of the limiting section 2012 adjacent to the installation section 32, so that the fixing part 521 can limit the support bar 201 from disengaging from the fixing groove 312.

[0080] The engagement groove 311 is open on the side away from the abutment groove 313, which facilitates the edge of the support plate 101 protruding from the engagement groove 311. The depth direction of the engagement groove 311 extends through both ends of the fixing section 31, which is beneficial to the stability of the support plate 101 installed on the positioning member 3.

[0081] The pressure ring 5 is used to abut against the end of the limiting segment 2012 away from the mounting position 2111, preventing the limiting segment 2012 from moving in the fixing groove 312 and disengaging from the fixing groove 312, thus making the support bar 201 more stable in the fixing groove 312. It should be noted that the pressure ring 5 can be provided in a cover shape and placed at one end of the fixing groove 312, so that the limiting segment 2012 cannot disengage from the fixing groove 312.

[0082] In some examples, such as Figures 14 to 16 As shown, the limiting segment 2012 has a fixing notch 2013, which is located at the end of the limiting segment 2012 away from the support strip 201;

[0083] The pressure ring 5 includes a connecting ring 51 and a fixing spring 52. The connecting ring 51 is sleeved on the mounting section 32. One end of the fixing spring 52 is connected to the connecting ring 51. The fixing spring 52 has a fixing part 521. The fixing part 521 is bent into a V-shape by the fixing spring 52. The side of the fixing part 521 with the apex angle is used to abut against the side wall of the fixing notch 2013 so that the fixing part 521 prevents the support bar 201 from rotating out of the fixing groove 312.

[0084] A fixing notch 2013 is formed at the end of the limiting section 2012 furthest from the mounting position 2111. The fixing notch 2013 is formed in the width direction of the limiting section 2012 and extends through both sides of the thickness of the limiting section 2012. The overall shape of the fixing notch 2013 is V-shaped. The connecting ring 51 is sleeved on the mounting section 32. After the connecting ring 51 is sleeved on the mounting section 32, it can be fixed by bolts, glue, etc., without specific restrictions. One end of the fixing spring piece 52 is connected to the connecting ring 51, and the other end is a free end 211. The fixing spring piece 52 is bent into a V-shape in the length direction, so that the bending part of the fixing spring piece 52 forms a fixing part 521. The protruding side of the fixing spring piece 52 after bending is set in the fixing notch 2013, so that the fixing part 521 can cooperate with the fixing notch 2013 to achieve the purpose of limiting the limiting section 2012 to exit the fixing groove 312, thereby improving the stability of the fixing support bar 201.

[0085] In some examples, such as Figure 8 and Figure 9 As shown, the fixing component also includes an auxiliary support bar 23. One end of the auxiliary support bar 23 is connected to the mounting member 21, and the other end of the auxiliary support bar 23 extends away from the mounting position 2111. The auxiliary support bar 23 is used to support the inner frame 100.

[0086] To improve the stability of the inner frame 100, the fixing assembly also includes an auxiliary support bar 23. The auxiliary support bar 23 is cylindrical, and its radial diameter must be smaller than the width of the mounting position 2111. One end of the auxiliary support bar 23 is located in the mounting position 2111, and the other end extends away from the mounting position 2111. Thus, when one end of the inner frame 100 is located in the mounting position 2111 and the auxiliary support bar 23 is located inside the inner frame 100, the auxiliary support bar 23 can support the inner frame 100 and prevent insufficient support due to the inner frame 100 being far from the mounting position 2111.

[0087] In some examples, such as Figure 9 and Figure 10 As shown, the positioning member 3 has a mounting hole 33, which mates with the end of the auxiliary support strip 23 away from the mounting member 21; and / or,

[0088] The inner frame 100 includes a plurality of support plates 101. One end of each support plate 101 has a locking notch extending along its length, so that one support plate 101 can be locked onto another support plate 101 along its length through the locking notch, and the two locking support plates 101 are arranged to cross each other in the width direction.

[0089] There are multiple auxiliary support bars 23, one end of each of the multiple auxiliary support bars 23 is located in the mounting position 2111, and the multiple auxiliary support bars 23 are spaced apart. The auxiliary support bars 23 are used to support the support plate 101 and to limit the displacement of the support plate 101.

[0090] To improve the stability of the positioning component 3, the positioning component 3 is provided with a mounting hole 33, which is used to cooperate with the auxiliary support bar 23, so that the mounting component 21 can support the positioning component 3 through the auxiliary support bar 23.

[0091] It should be noted that the peripheral wall of the positioning component 3 is also provided with a locking hole, which connects to the wall of the through mounting hole 33. The fixing device also includes a locking component 7, one end of which is disposed in the locking hole to lock the auxiliary support bar 23, thereby improving the stability of the positioning component 3. The locking component 7 is a bolt.

[0092] The multiple support plates 101 can be three support plates 101, four support plates 101, etc. When there are three support plates 101, the three support plates 101 are respectively a first support plate 102, a second support plate 103, and a third support plate 104. A locking notch is provided at one end of the first support plate 102, the second support plate 103, and the third support plate 104, respectively. The locking notch 1021 of the first support plate 102 is located at the end of the first support plate 102 opposite to the mounting position 2111, and extends along the length of the first support plate 102. The locking notch 1031 is located at the end of the second support plate 103 adjacent to the mounting position 2111. Thus, when the second support plate 103 is engaged with the side wall of the first engagement notch 1021 through the second engagement notch 1031, the second support plate 103 and the first support plate 102 are connected. The opening of the third engagement notch 1041 is located at one end of the third support plate 104 away from the mounting position 2111 and extends along the direction of the mounting position 2111. Thus, the third engagement notch 1041 can engage with the side of the second support plate 103 away from the second engagement notch 1031, thereby connecting the third support plate 104 and the second support plate 103.

[0093] When there are four support plates 101, the support plates 101 are a first support plate 102, a second support plate 103, a third support plate 104, and a fourth support plate 105. The engaging notch can have only one notch wall or two opposing notch walls. This embodiment uses an engaging notch with two opposing notch walls as an example for explanation. The engaging notches include a first engaging notch 1021, a second engaging notch 1031, a third engaging notch 1041, and a fourth engaging notch 1051, etc. The first support plate 102 has a first engaging notch 1021 at one end, which extends along the length of the first support plate 102. The second support plate 103 has a first engaging notch 1032 and a second engaging notch 1031 at both ends, which extend along the length of the second support plate 103. An engaging plate 1033 is provided between the first engaging notch 1032 and the second engaging notch 1031. The engaging plate 1033 is disposed in the first engaging notch 1021, so that the first support plate 102 and the second support plate 103 can be engaged and connected through the first engaging notch 1021 and the engaging plate 1033. The third support plate 104 has a third engaging notch 1041 and a second engaging notch at both ends. The second engaging notch 1042 and the third engaging notch 1041 extend along the length of the third support plate 104. There is an engaging plate 1043 between the second engaging notch 1042 and the third notch. The engaging plate 1043 is disposed in the second engaging notch 1031 and the first engaging notch 1021, so that the engaging plate 1043 can be engaged through the second engaging notch 1031 and the first engaging notch 1021 to achieve connection with the first support plate 102 and the second support plate 103. The fourth support plate 105 has a fourth engagement notch 1051 at one end, which is used to engage with the engagement plate 1043. The end of the fourth support plate 105 away from the fourth engagement notch 1051 is located in the first engagement notch 1021, the second engagement notch 1031, and the third engagement notch 1041. In this way, the first support plate 102, the second support plate 103, the third support plate 104, and the fourth support plate 105 can be interconnected.

[0094] The number of auxiliary support strips 23 is at least two; this embodiment uses three as an example. The three auxiliary support strips 23 are spaced apart, and one end of each auxiliary support strip 23 is located near the middle of the mounting position 2111. In this way, the three auxiliary support strips 23 can prevent the surfaces of adjacent support plates 101 from touching. In addition, the auxiliary support strips 23 are also located near the lower side of the mounting position 2111, so that the auxiliary support strips 23 can provide auxiliary support for the support plate 101.

[0095] In some examples, such as Figure 1As shown, the fixing device further includes abutting component 4, which corresponds to the mounting position 2111. The abutting component 4 abuts against the side of the positioning member 3 away from the mounting position 2111, so that the abutting component abuts against the double-layer support frame through the positioning member 3 to prevent the inner frame 100 from disengaging from the mounting position 2111.

[0096] The abutting component 4 is used to abut the double-layer support frame, allowing the abutting component 4 to abut the double-layer support frame via the positioning element 3, thereby improving the stability of the inner frame 100 at the installation position 2111. The overall shape of the abutting component 4 can be rectangular or square, etc. The abutting component 4 and the positioning element 3 are rotatably connected to prevent friction between the double-layer support frame and the positioning element 3 when the double-layer support frame rotates with the installation element 21, causing wear on the double-layer support frame. The connection between the abutting component 4 and the positioning element 3 can be achieved by having an assembly hole on the side of the abutting component 4 facing the installation position 2111, with the end of the positioning element 3 away from the installation position 2111 set in the assembly hole. The positioning element 3 is rotatably connected to the assembly hole, allowing the positioning element 3 to rotate relative to the abutting component 4.

[0097] It should be noted that, as Figure 2 and Figure 3 As shown, the abutting component 4 includes a guide seat 41, a movable component 42, and a positioning component 3. The guide seat 41 is set corresponding to the mounting position 2111 and is used to install the movable component 42. The movable component 42 is used to abut the positioning component 3. The movable component 42 is movably mounted on the guide seat 41. There are several ways to movably mount the movable component 42 on the guide seat 41. For example, a guide hole can be opened on the guide seat 41, or a guide tube can be set on the guide seat 41, with the movable component 42 cooperating with the guide tube. In order for the movable component 42 to abut the positioning component 3, the movable component 42 needs to be locked on the guide seat 41 when abutting the positioning component 3. There are several ways to lock the movable component 42 on the guide seat 41. For example, a locking hole can be opened on the guide seat 41, the locking hole passing through the guide hole, and then a bolt can be set to pass through the locking hole and abut against the movable component 42 to achieve the purpose of restricting the movement of the movable component 42. For example, when the movable part 42 is installed on the guide seat 41 through the guide tube, a locking hole penetrating the internal space of the guide tube can be opened on the outer wall of the guide tube. A bolt is then placed in the guide hole, and the bolt abuts against the movable part 42 to limit its movement. To improve the stability of the positioning part 3, the movable part 42 is connected to the positioning part 3 through a connecting part 45. The connecting part 45 is cylindrical, and a connecting hole is opened on one side. One end of the positioning part 3 is rotatably disposed in the connecting hole, and the other end of the connecting part 45 is connected to the movable part 42. Thus, when the positioning part 3 is connected to the movable part 42, the stability of the positioning part 3 can be improved.

[0098] The abutting assembly 4 further includes a driving member 44 and a hinge member 43. The driving member 44 includes a driving segment and a hinge segment connected together. The end of the hinge segment away from the driving segment is rotatably connected to the guide seat 41. One end of the hinge member 43 is rotatably connected to the end of the hinge segment and the driving segment connected together, and the other end is rotatably connected to the end of the moving member 42 away from the positioning member 3. Thus, the moving member 42 can move on the guide seat 41 under the swing of the driving member 44.

[0099] It should be noted that the guide seat 41 is installed on the fixed seat 64, which increases the distance between the guide seat 41 and the ground, making it easier for operators to operate.

[0100] This invention also proposes an electrothermal module, which includes a double-layer support frame and an electric heating tape 300. The double-layer support frame includes an inner frame 100 and an outer frame 200. The inner frame 100 and the outer frame 200 are fixed by the aforementioned fixing device. This fixing device adopts all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The electric heating tape 300 is wound around the inner frame 100 and the outer frame 200 respectively.

[0101] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A fixing device for a double-layer support frame, characterized in that, The double-layer support frame includes an inner frame and an outer frame. The outer frame includes multiple support bars, one end of which is rotatably connected to the inner frame. The fixing device includes: A mounting base and a rotating shaft, wherein the rotating shaft is rotatably mounted on the mounting base; A fixing component includes a mounting member and a fixing member. One end of the mounting member is fixedly connected to the rotating shaft, and the other end is a free end. The free end has a mounting position configured to fix one end of the inner frame. The fixing member is disposed on the mounting member and configured to be detachably connected to the support bar so that the support bar is fixed to the mounting member by the fixing member. A positioning element is provided, which is installed on the end of the inner frame away from the mounting position, so that the positioning element can fix the support bar when the end of the support bar away from the inner frame rotates to the positioning element.

2. The fixing device as described in claim 1, characterized in that, The number of fasteners is multiple, and the multiple fasteners are disposed on the mounting member and are arranged at intervals along the circumference of the mounting member. The fasteners have clamping spaces for clamping the support bars; and / or, the fasteners are formed by bending metal sheets, and the fasteners are detachably connected to the mounting member.

3. The fixing device as described in claim 1, characterized in that, The fixing device further includes a stop component, which corresponds to the mounting position and abuts against the side of the positioning member away from the mounting position, so that the stop component abuts against the double-layer support frame through the positioning member to prevent the inner frame from detaching from the mounting position.

4. The fixing device as described in claim 1, characterized in that, The support bar includes a connected support bar body and a limiting section, and the end of the support bar body away from the limiting section is connected to the inner frame; The positioning component includes a fixing section, the end of which has an assembly groove for mounting the end of the inner frame away from the mounting position, and the peripheral wall of the fixing section has a fixing groove for fixing the limiting section.

5. The fixing device as described in claim 4, characterized in that, The inner frame includes multiple support plates. One end of each support plate has a locking notch extending along the length of the support plate, so that one support plate can be locked onto another support plate along the length of the support plate through the locking notch. The two mutually locking support plates are arranged crosswise in the width direction. The end of each support plate away from the mounting position has an installation notch. The side walls of the multiple installation notches enclose an installation space. The assembly groove includes an abutment groove extending along the length of a fixed section and a plurality of engaging grooves. The engaging grooves are used to install the notch wall forming the installation notch. The plurality of engaging grooves are arranged at intervals along the circumference of the abutment groove. The plurality of engaging grooves are connected to the abutment groove, and the groove depth of the engaging groove is greater than the groove depth of the abutment groove. The groove wall of the abutment groove is used to abut against the side wall of the installation space facing the opening of the installation space.

6. The fixing device as described in claim 5, characterized in that, The engaging groove is open on the side away from the abutting groove, so that the edge of the support plate can protrude from the engaging groove. The depth direction of the engaging groove extends through the opposite end faces of the fixing section, so that the end of the support plate away from the mounting position can protrude from the engaging groove. And / or, the positioning member further includes an mounting section, the radial dimension of which is smaller than the radial dimension of the fixing section, and the mounting section is connected to the end of the fixing section away from the mounting position. The length direction of the fixing groove extends through the opposite end faces of the fixing section, so that the two ends of the limiting section can extend out of the fixing groove. The fixing device further includes a pressing ring, the pressing ring being disposed on the mounting section, the pressing ring having a fixing part, the fixing part being used to abut against the end of the limiting section adjacent to the mounting section, so that the fixing part can limit the support bar from disengaging from the fixing groove.

7. The fixing device as described in claim 6, characterized in that, The limiting segment has a fixed notch, which is located at the end of the limiting segment away from the support strip; The pressure ring includes a connecting ring and a fixing spring. The connecting ring is sleeved on the mounting section. One end of the fixing spring is connected to the connecting ring. The fixing spring has a fixing part. The fixing part is bent into a V-shape by the fixing spring. The side of the fixing part with the apex angle is used to abut against the side wall of the fixing notch so that the fixing part prevents the support bar from rotating out of the fixing groove.

8. The fixing device according to any one of claims 1 to 7, characterized in that, The fixing component also includes an auxiliary support bar, one end of which is connected to the mounting component, and the other end of which extends away from the mounting position. The auxiliary support bar is used to support the inner frame.

9. The fixing device as described in claim 8, characterized in that, The positioning element has a mounting hole that mates with the end of the auxiliary support bar away from the mounting element; and / or, the inner frame includes a plurality of support plates, one end of which has a locking notch extending along the length direction of the support plate, so that one support plate can be locked onto another support plate along its length direction through the locking notch, and the two mutually locking support plates are arranged crosswise in the width direction; there are a plurality of auxiliary support bars, one end of each of the plurality of auxiliary support bars is located within the mounting position, and the plurality of auxiliary support bars are spaced apart; the auxiliary support bars are used to support the support plates and to limit the displacement of the support plates.

10. An electric heating module, the electric heating module comprising a double-layer support frame and an electric heating tape, the double-layer support frame comprising an inner frame and an outer frame, the inner frame and the outer frame being fixed by a fixing device according to any one of claims 1 to 9, the electric heating tape being wound around the inner frame and the outer frame respectively.

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