Double-rail magnetic attraction bearing device and door and window assembly

Abstract

The utility model discloses a double-rail magnetic attraction bearing device and a door and window assembly. The device comprises a support, two parallel sliding rails are formed on the support, and each sliding rail is provided with a magnetic conductive strip; a magnet is installed on the lower surface of the magnetic attraction frame, the magnet is located between the two magnetic conduction strips, and preset gaps are formed between the two sides of the magnet and the two magnetic conduction strips so that the magnet can suspend between the two magnetic conduction strips under the action of bidirectional magnetic force; and the roller assembly is connected to the lower surface of the magnetic attraction frame and is in rolling fit with at least one magnetic conduction strip so as to be used for rolling guiding and enable a preset gap to be always kept between the magnet and the two magnetic conduction strips. According to the device, a double-magnetic-conductive-strip layout is adopted, a non-contact gap is always kept between a magnet of a magnetic attraction frame and a magnetic conductive strip through a roller, and mechanical friction of a traditional pulley type structure is thoroughly eliminated; and moreover, magnetic force is generated by utilizing the double-sided magnetism of the magnets, so that efficient bearing capacity is realized, meanwhile, the use amount of the magnets is reduced, and the material cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of door and window equipment, and in particular to a double-track magnetic load-bearing device and door and window components. Background Technology

[0002] The load-bearing sliding structure of sliding doors and windows is one of the core components of the door and window system, and its performance directly affects the smoothness of sliding, load-bearing capacity, noise level, and service life of the doors and windows. Currently, the main load-bearing sliding component technologies on the market are divided into two types: traditional mechanical pulley type and emerging magnetic load-bearing type, but both have certain technical defects.

[0003] Traditional sliding doors and windows rely primarily on load-bearing pulleys to slide. While this method is technically mature, it has the following drawbacks: the mechanical friction between the pulleys and the track generates significant noise, which becomes more pronounced after prolonged use; direct contact between the pulleys and the track leads to wear, reducing smoothness of sliding and increasing maintenance and replacement costs.

[0004] In recent years, magnetic load-bearing sliding components have been introduced to the market as an emerging technology. They achieve non-contact load bearing through magnetic force, effectively reducing mechanical friction and noise. However, existing magnetic load-bearing sliding component technology still has the following problems: Existing magnetic load-bearing sliding components usually adopt a single magnetic strip design. To maximize the magnetic force, magnets need to be arranged on both sides, which not only increases material costs but also leads to structural complexity. To ensure the spacing between the magnet and the magnetic strip and the sway clearance of the door and window, rollers need to be arranged on both sides. This places extremely high demands on the machining accuracy and installation technology of the roller installation position, increasing the difficulty of manufacturing and installation. For high load conditions, existing technology can only increase the load-bearing capacity by increasing the number of magnetic load-bearing sliding components axially. However, this method cannot meet the needs of heavy doors and windows with limited width, thus limiting the scope of application.

[0005] In conclusion, neither traditional mechanical pulley systems nor existing magnetic load-bearing sliding components can achieve a good balance between noise control, load-bearing capacity, cost optimization, and ease of installation. Therefore, developing a new type of load-bearing sliding structure that combines high-efficiency load-bearing, low noise, low wear, low cost, and easy installation is of significant practical importance. Summary of the Invention

[0006] This utility model provides a dual-track magnetic load-bearing device and door and window components to achieve the effects of high-efficiency load-bearing, low noise, low wear, low cost and easy installation.

[0007] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0008] The first aspect of this utility model provides a dual-track magnetic suction load-bearing device, comprising:

[0009] A bracket having two parallel slide rails formed thereon, each slide rail being equipped with a magnetic strip;

[0010] A magnetic holder, wherein a magnet is mounted on the lower surface of the magnetic holder, the magnet is located between two magnetic strips, and the two sides of the magnet form a preset gap with the two magnetic strips respectively, so as to suspend between the two magnetic strips under the action of bidirectional magnetic force;

[0011] A roller assembly is connected to the lower surface of the magnetic holder and rolls in cooperation with at least one of the magnetic strips to guide the roll and maintain the preset gap between the magnet and the two magnetic strips at all times.

[0012] In the unloaded state, the magnet and the two magnetic strips are at the same horizontal height, so that the magnet is suspended between the two magnetic strips under the action of bidirectional magnetic force. In the loaded state, the magnet and the two magnetic strips undergo relative displacement, so that the bidirectional magnetic force after the change of direction generates a counteracting force to cancel the force, thereby making the magnet suspend between the two magnetic strips.

[0013] Preferably, it further includes:

[0014] An additional magnetic frame has a recessed portion, and mounting grooves are provided on both sides of the recessed portion;

[0015] Two sets of additional magnetic blocks are respectively installed in the mounting grooves on both sides of the recess;

[0016] The additional magnetic frame is positioned above the magnetic suction frame, such that the two sets of additional magnetic blocks are located on the outside of the two magnetic strips and are symmetrically arranged about the magnet, and the two sets of additional magnetic blocks and the two magnetic strips are in a state of opposite pole attraction.

[0017] Preferably, the bracket is a lower frame bracket, which supports the bottom of the lightweight fan frame, and the upper end of the magnetic bracket is used to connect with the lightweight fan frame.

[0018] The lightweight fan frame applies a downward first pressure to the magnetic frame under the action of gravity, causing the magnet and the two magnetic strips to move relative to each other. The first pressure is then counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, thereby keeping the lightweight fan frame in balance.

[0019] Preferably, the bracket is an upper frame bracket, which supports the top of the lightweight fan frame, and the lower end of the magnetic bracket is provided with a connecting part, which is used to connect with the lightweight fan frame.

[0020] The lightweight fan frame applies a downward first pulling force to the magnetic frame under the action of gravity, so that the magnet and the two magnetic strips are relatively displaced. The first pulling force is counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, thereby keeping the lightweight fan frame in balance.

[0021] Preferably, the bracket is a lower frame bracket, which supports the bottom of the heavy-duty fan frame and allows the upper end of the additional magnetic bracket to abut against the inner surface of the heavy-duty fan frame.

[0022] The heavy-duty fan frame applies a downward second pressure to the magnetic frame under the action of gravity, causing the magnet and the two magnetic strips to move relative to each other. The second pressure is counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, and the mutual magnetic attraction between the two sets of additional magnetic blocks and the magnet, thereby keeping the heavy-duty fan frame in balance.

[0023] Preferably, the bracket is an upper frame bracket, which is used to support the top of the heavy-duty fan frame, and the lower end of the magnetic bracket is provided with a connecting part, which is used to connect with the inner surface of the heavy-duty fan frame.

[0024] The heavy-duty fan frame applies a downward second pulling force to the magnetic frame under the action of gravity, so that the magnet and the two magnetic strips are relatively displaced. The second pulling force is counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, and the mutual magnetic attraction between the two sets of additional magnetic blocks and the magnet, thereby keeping the heavy-duty fan frame in balance.

[0025] Preferably, there are two roller assemblies, which are respectively disposed at both ends of the magnet along the length of the magnetic frame.

[0026] Preferably, there is one roller assembly, which is located at the center of the lower surface of the magnetic holder; there are two magnets, which are symmetrically arranged about the roller assembly.

[0027] Preferably, the slide rail includes at least an arc-shaped slide rail or a square slide rail, and the magnetic strip includes at least a cylindrical magnetic strip or a square columnar magnetic strip.

[0028] A second aspect of the present invention provides a door and window assembly, including the aforementioned double-track magnetic load-bearing device.

[0029] Compared with the prior art, the advantages of this utility model are as follows:

[0030] (1) Reduce push-pull noise and contactless wear

[0031] This invention employs a dual magnetic strip layout, ensuring a seamless connection between the magnet and the magnetic strip via rollers, thus completely eliminating the mechanical friction inherent in traditional pulley-type structures. This design not only significantly reduces noise during the push-pull process but also avoids pulley wear issues, extending the product's lifespan.

[0032] (2) Magnetic load-bearing capacity and cost optimization

[0033] This invention's magnetic holder fully utilizes the double-sided magnetism of magnets to generate magnetic force, achieving efficient load-bearing capacity while reducing the amount of magnets used, thus lowering material costs. Furthermore, the design with single or double rollers simplifies the installation structure, significantly reducing processing and installation difficulty, further lowering production and maintenance costs, and benefiting consumers.

[0034] (3) High load adaptability and flexible application

[0035] This invention provides a flexible solution for high-load conditions. It not only increases the load-bearing capacity by increasing the number of magnetic load-bearing sliders axially, but also strengthens the load by adding magnetic auxiliary blocks radially. Therefore, it can adapt to the needs of doors and windows of different sizes and weights, meeting diverse practical application scenarios. Attached Figure Description

[0036] Figure 1A A front view of a dual-track magnetic suction load-bearing device provided in the first embodiment of this utility model;

[0037] Figure 1B A partial exploded view of a dual-track magnetic suction load-bearing device provided in the first embodiment of this utility model;

[0038] Figure 1C An exploded view of a dual-track magnetic load-bearing device provided in the first embodiment of this utility model;

[0039] Figure 1D This is a usage scenario diagram of a dual-track magnetic load-bearing device provided in the first embodiment of the present invention;

[0040] Figure 1E This is a schematic diagram of the magnetic attraction load-bearing principle in the first embodiment of this utility model when no force is applied;

[0041] Figure 1F This is a schematic diagram of the magnetic attraction load-bearing principle under downward pressure in the first embodiment of this utility model;

[0042] Figure 1G This is a schematic diagram illustrating the magnetic attraction and load-bearing principle when subjected to an upward pulling force in the first embodiment of this utility model.

[0043] Figure 2A A partial exploded view of a dual-track magnetic suction load-bearing device provided in the second embodiment of this utility model;

[0044] Figure 2B An exploded view of a dual-track magnetic suction load-bearing device provided in the second embodiment of this utility model;

[0045] Figure 3A A front view of a dual-track magnetic suction load-bearing device provided in the third embodiment of this utility model;

[0046] Figure 3B A partial exploded view of a dual-track magnetic suction load-bearing device provided in the third embodiment of this utility model;

[0047] Figure 3C A schematic diagram of the additional magnetic structure provided in the third embodiment of this utility model;

[0048] Figure 3D A usage scenario diagram of a dual-track magnetic suction load-bearing device provided in the third embodiment of this utility model;

[0049] Figure 4A A front view of a dual-track magnetic suction load-bearing device provided in the fourth embodiment of this utility model;

[0050] Figure 4B A partial exploded view of a dual-track magnetic suction load-bearing device provided in the fourth embodiment of this utility model;

[0051] Figure 4C An exploded view of a dual-track magnetic suction load-bearing device provided in the fourth embodiment of this utility model;

[0052] Figure 4D This is a usage scenario diagram of a dual-track magnetic suction load-bearing device provided in the fourth embodiment of this utility model;

[0053] Figure 5A A front view of a dual-track magnetic suction load-bearing device provided in the fifth embodiment of this utility model;

[0054] Figure 5B A partial exploded view of a dual-track magnetic suction load-bearing device provided in the fifth embodiment of this utility model;

[0055] Figure 5C This is an application scenario diagram of a dual-track magnetic load-bearing device provided in the fifth embodiment of the present invention;

[0056] Figure 6AA front view of a dual-track magnetic suction load-bearing device provided in the sixth embodiment of this utility model;

[0057] Figure 6B A partial exploded view of a dual-track magnetic suction load-bearing device provided in the sixth embodiment of this utility model;

[0058] Figure 6C An application scenario diagram of a dual-track magnetic suction load-bearing device provided in the sixth embodiment of this utility model;

[0059] Figure 7A A front view of a dual-track magnetic load-bearing device provided in the seventh embodiment of this utility model;

[0060] Figure 7B A front view of another dual-track magnetic load-bearing device provided in the seventh embodiment of this utility model;

[0061] Figure 7C A front view of yet another dual-track magnetic load-bearing device provided in the seventh embodiment of this utility model;

[0062] Figure 7D The front view of another dual-track magnetic load-bearing device provided in the seventh embodiment of this utility model.

[0063] In the accompanying drawings, the reference numerals indicate:

[0064] 11. Bracket; 111. Support plate; 112. Guide rail plate; 113. Slide rail; 114. Magnetic strip;

[0065] 12. Magnetic holder; 121. Connecting hole; 122. Connecting part;

[0066] 13. Magnet;

[0067] 14. Roller assembly; 141. Rivet shaft; 142. Roller; 143. Washer;

[0068] 15. Additional magnetic frame; 151. Recessed portion; 152. Mounting slot;

[0069] 16. Add magnetic blocks;

[0070] 10. Lightweight fan frame; 20. Heavyweight fan frame. Detailed Implementation

[0071] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0072] This utility model aims to provide a dual-track magnetic load-bearing device and door / window assembly. By optimizing the magnetic load-bearing structure, it solves problems such as high noise, severe wear, insufficient load-bearing capacity, high cost, and complex installation in existing technologies. Specifically, this utility model adopts a dual-track design to optimize magnetic force distribution and improve load-bearing capacity; at the same time, it simplifies the structure and reduces the requirements for installation accuracy, thereby providing users with a more flexible, economical, and durable load-bearing sliding solution for sliding doors and windows.

[0073] In one embodiment of this utility model, the dual-track magnetic suction load-bearing device is composed of a support, a magnetic suction frame, magnets, and a roller assembly. The support has two parallel slide rails that, together with a magnetic strip, form a dual-track structure. The magnetic suction frame is equipped with magnets and a roller assembly, forming a stable magnetic structure with the magnetic strip of the dual-track structure. This allows the magnetic suction frame to maintain balance under both stressed and unstressed conditions through magnetic force.

[0074] The following embodiments are as follows: First embodiment is a bottom-supported double-roller scheme; second embodiment is a bottom-supported single-roller scheme; third embodiment is a bottom-supported scheme with additional magnetic blocks; fourth embodiment is a top-supported double-roller scheme; fifth embodiment is a top-supported scheme with additional magnetic blocks; sixth embodiment is a scheme with both top and bottom support with additional magnetic blocks; and seventh embodiment is an alternative scheme with a double-track structure. The shapes, materials, and dimensions in the following embodiments are merely illustrative for ease of understanding and do not constitute a limitation on this utility model.

[0075] First embodiment:

[0076] like Figures 1A-1D As shown, a dual-track magnetic suction load-bearing device provided in an embodiment of this utility model includes a bracket 11, a magnetic suction frame 12, a magnet 13, and a roller assembly 14. Figure 1D As shown, the magnetic frame 12 of the dual-track magnetic load-bearing device is supported at the bottom of the lightweight sash frame 10, so that the lightweight sash frame 10 can be suspended on the bracket 11, thereby effectively reducing mechanical friction and improving the convenience of pushing and pulling the window sash.

[0077] Specifically, such as Figure 1CAs shown, the bracket 11 includes a rectangular plate-shaped support plate 111. Two guide rail plates 112, perpendicular to the support plate 111, are formed on the upper surface of the support plate 111. The two guide rail plates 112 are parallel to each other and have the same height. An arc-shaped slide rail 113 is formed on the top of each guide rail plate 112. Furthermore, a magnetic strip 114 is installed on each slide rail 113. In this embodiment, the magnetic strip 114 is cylindrical and fixed to the slide rail 113 with adhesive. However, this structural form is not limited; the magnetic strip 114 can also be fixed to the slide rail 113 by welding, snap-fit ​​connection, or other connection methods.

[0078] like Figure 1C As shown, the magnetic chuck 12 is a rectangular plate with two connection holes 121 at both ends of its surface for connection with the roller assembly 14. The magnet 13 is attached to the lower surface of the magnetic chuck 12 with adhesive (or it can be fixed by snap-fit ​​connection or connector).

[0079] like Figure 1A As shown, the magnet 13 is located between the two magnetic strips 114, and the two sides of the magnet 13 form the same preset gap with the two magnetic strips 114 respectively, so as to suspend between the two magnetic strips 114 under the action of bidirectional magnetic force. In addition, the roller assembly 14 is connected to the lower surface of the magnetic holder 12 and rolls with the two magnetic strips 114 to guide the rolling and keep the preset gap between the magnet 13 and the two magnetic strips 114 at all times.

[0080] In this embodiment, there are two roller assemblies 14, which are respectively disposed at both ends of the magnet 13 along the length of the magnetic frame 12. Specifically, the roller assembly 14 includes a rivet shaft 141, a roller 142, and a washer 143. The rivet shaft 141 is connected to the connecting hole 121, the roller 142 is rotatably mounted on the rivet shaft 141, and a washer 143 is installed between the rivet shaft 141 and the roller 142 so that the roller 142 rolls with the two magnetic strips 114.

[0081] The following is combined Figures 1E-1G Explanation of the magnetic attraction load-bearing and sliding principle:

[0082] like Figure 1E As shown, in the unloaded state, since the magnetic holder 12 itself has a small weight, it will hardly cause the magnet 13 to shift, so that the magnet 13 and the two magnetic strips 114 are at the same horizontal height, and then it is suspended between the two magnetic strips under the action of bidirectional magnetic force F (equal in magnitude and opposite in direction).

[0083] like Figure 1FAs shown, when the magnetic holder 12 is subjected to a downward force w, the magnet 13 moves downward relative to the two magnetic strips 114, thereby changing the direction of the two original horizontal magnetic forces (from horizontal to inclined upward). Thus, the force w is canceled out by the vertical component of the two inclined upward bidirectional magnetic forces F, thereby restoring balance and causing the magnet 13 to suspend between the two magnetic strips 114.

[0084] like Figure 1G As shown, when the magnetic holder 12 is subjected to an upward force -w, the magnet 13 moves upward relative to the two magnetic strips 114, thereby changing the direction of the two original horizontal magnetic forces (from horizontal to inclined downward). Thus, the force -w is canceled out by the vertical component of the two inclined downward bidirectional magnetic forces F, thereby restoring balance and causing the magnet 13 to suspend between the two magnetic strips 114.

[0085] like Figure 1D As shown, in practical use, the bracket (in this embodiment, the lower frame bracket) is supported at the bottom of the lightweight fan frame 10, and the upper surface of the magnetic holder 12 abuts against the inner surface of the fan frame. It can be understood that the lightweight fan frame 10, under the action of gravity, applies a downward first pressure to the magnetic holder 12, causing the magnet 13 and the two magnetic strips 114 to undergo relative displacement. The mutual magnetic attraction between the two magnetic strips 114 and the magnet 13 cancels out the first pressure, thereby maintaining the balance of the lightweight fan frame.

[0086] Second embodiment:

[0087] like Figures 2A-2B As shown, a double-track magnetic load-bearing device according to the second embodiment of this utility model includes a bracket 11, a magnetic frame 12, a magnet 13, and a roller assembly 14. Compared with the first embodiment, the difference in this embodiment is that the roller assembly 14 and the magnet 13 are arranged in different ways.

[0088] Specifically, in this embodiment, there is one roller assembly 14, which is located at the center of the lower surface of the magnetic holder 12. Correspondingly, there are two magnets 13, which are symmetrically arranged about the roller assembly 14.

[0089] Except for the differences mentioned above, the structure of this embodiment is the same as that of the first embodiment, and will not be described again here.

[0090] Third embodiment:

[0091] like Figures 3A-3DAs shown, a dual-track magnetic load-bearing device according to the third embodiment of this utility model includes a bracket 11, a magnetic frame 12, a magnet 13, and a roller assembly 14. The difference between this embodiment and the first embodiment is that it also has an additional magnetic structure to provide greater magnetic force.

[0092] Specifically, such as Figure 3B and 3C As shown, the dual-track magnetic load-bearing device also includes an additional magnetic frame 15 and two sets of additional magnetic blocks 16. The additional magnetic frame 15 has a recessed portion 151, and mounting grooves 152 are provided on both sides of the recessed portion; correspondingly, the two sets of additional magnetic blocks 16 are respectively disposed in the mounting grooves 152 on both sides of the recessed portion.

[0093] In specific assembly, the additional magnetic frame 15 is placed above the magnetic suction frame 12, so that the two sets of additional magnetic blocks 15 are located on the outside of the two magnetic strips 114 respectively, and are symmetrically arranged about the magnet (e.g., Figure 3A (As shown). Thus, in this embodiment, in addition to the two magnetic strips 114 attracting the magnet 13, the two sets of additional magnetic blocks 16 can also attract the magnet 13, thereby providing a greater magnetic attraction force.

[0094] like Figure 3D As shown, in practical use, the bracket 11 is supported at the bottom of the heavy-duty fan frame 20, and the upper surface of the additional magnetic frame 15 abuts against the inner surface of the fan frame. It can be understood that the heavy-duty fan frame 20 applies a downward second pressure (greater than the first pressure) to the magnetic frame under the action of gravity, so that the magnet 13 and the two magnetic strips 114 are relatively displaced. Thus, the mutual magnetic attraction between the two magnetic strips 114 and the magnet 13, and the mutual magnetic attraction between the two sets of additional magnetic blocks 16 and the magnet 13, jointly counteract the second pressure, thereby keeping the heavy-duty fan frame 20 in balance.

[0095] It is understandable that in this embodiment, since it is necessary to support the heavy fan frame 20, it is necessary to add an additional magnetic structure. The more additional magnetic blocks 16 there are, the greater the magnetic force that can be added. In specific use, the appropriate option can be selected according to the actual scenario.

[0096] Except for the differences mentioned above, the structure of this embodiment is the same as that of the first embodiment, and will not be described again here.

[0097] Fourth embodiment:

[0098] like Figures 4A-4D As shown, a dual-track magnetic suction load-bearing device provided in the third embodiment of this utility model includes a bracket 11, a magnetic suction frame 12, a magnet 13, and a roller assembly 14. Compared with the first embodiment, the difference in this embodiment is that the bracket 11 is an upper frame bracket, used to support the top of the lightweight fan frame 10.

[0099] Specifically, in this embodiment, the bracket 11 is an upper frame bracket, which supports the top of the lightweight fan frame 10, and the lower surface of the magnetic bracket 12 extends downward to form a connecting portion 122, so that the connecting portion 122 is connected to the inner surface of the lightweight fan frame 10. It can be understood that the lightweight fan frame 10 exerts a downward first pulling force on the magnetic bracket 12 under the action of gravity, so that the magnet 13 and the two magnetic strips 114 are relatively displaced, thereby canceling the first pulling force through the mutual magnetic attraction between the two magnetic strips 114 and the magnet 13, thus keeping the lightweight fan frame 10 in balance.

[0100] Except for the differences mentioned above, the structure of this embodiment is the same as that of the first embodiment, and will not be described again here.

[0101] Fifth embodiment:

[0102] like Figures 5A-5C As shown, a dual-track magnetic suction load-bearing device according to the fifth embodiment of this utility model includes a bracket 11, a magnetic suction frame 12, a magnet 13, and a roller assembly 14. Compared with the fourth embodiment, the difference in this embodiment is that it also has an additional magnetic structure to provide greater magnetic force.

[0103] The additional magnetic structure is the same as that in the third embodiment described above, and will not be repeated here. Furthermore, the bracket 11 is an upper frame bracket, which supports the top of the heavy-duty fan frame 20, and the lower surface of the magnetic bracket 12 extends downward to form a connecting part 122, so that the connecting part 122 is connected to the inner surface of the heavy-duty fan frame 20.

[0104] Understandably, the heavy-duty fan frame 20 exerts a downward second pulling force (greater than the first pulling force) on the magnetic frame 12 under the action of gravity, so that the magnet 13 and the two magnetic strips 114 are relatively displaced. Thus, the second pulling force is counteracted by the mutual magnetic attraction between the two magnetic strips 114 and the magnet 13, and the mutual magnetic attraction between the two sets of additional magnetic blocks 16 and the magnet 13, thereby keeping the heavy-duty fan frame 20 in balance.

[0105] Except for the differences mentioned above, the structure of this embodiment is the same as that of the fourth embodiment, and will not be described again here.

[0106] Sixth embodiment:

[0107] like Figures 6A-6C The image shows a double-track magnetic suction load-bearing device according to the sixth embodiment of this utility model. The double-track magnetic suction load-bearing device in this embodiment is composed of the double-track magnetic suction load-bearing devices in the third and fifth embodiments.

[0108] like Figure 6CAs shown, in specific use, the double-track magnetic load-bearing device in the third embodiment is supported at the bottom of the heavy-duty fan frame 20, and the double-track magnetic load-bearing device in the fifth embodiment is supported at the top of the heavy-duty fan frame 20, thereby achieving the upper and lower magnetic load-bearing of the heavy-duty fan frame 20.

[0109] Furthermore, it is understood that if a lightweight fan frame 10 needs to be installed, the dual-track magnetic absorbing load-bearing device in the third embodiment can be replaced with the dual-track magnetic absorbing load-bearing device in the first or second embodiment, and the dual-track magnetic absorbing load-bearing device in the fifth embodiment can be replaced with the dual-track magnetic absorbing load-bearing device in the fourth embodiment.

[0110] Seventh embodiment:

[0111] like Figures 7A-7D As shown, based on the first to sixth embodiments described above, in this embodiment, the arc-shaped slide rail can be replaced with a square slide rail, and correspondingly, the cylindrical magnetic strip 114 can be replaced with a square magnetic strip 114.

[0112] Eighth embodiment:

[0113] Based on the first to seventh embodiments described above, the eighth embodiment of this utility model provides a door and window assembly, including any of the above-mentioned double-track magnetic load-bearing devices.

[0114] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0115] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0116] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A double-track magnetic suction load-bearing device, characterized in that, include: A bracket having two parallel slide rails formed thereon, each slide rail being equipped with a magnetic strip; A magnetic holder, wherein a magnet is mounted on the lower surface of the magnetic holder, the magnet is located between two magnetic strips, and the two sides of the magnet form a preset gap with the two magnetic strips respectively, so as to suspend between the two magnetic strips under the action of bidirectional magnetic force; A roller assembly is connected to the lower surface of the magnetic holder and rolls in cooperation with at least one of the magnetic strips to guide the roll and maintain the preset gap between the magnet and the two magnetic strips at all times. In the unloaded state, the magnet and the two magnetic strips are at the same horizontal height, so that the magnet is suspended between the two magnetic strips under the action of bidirectional magnetic force. In the loaded state, the magnet and the two magnetic strips undergo relative displacement, so that the bidirectional magnetic force after the change of direction generates a counteracting force to cancel the force, thereby making the magnet suspend between the two magnetic strips.

2. The dual-track magnetic load-bearing device as described in claim 1, characterized in that, Also includes: An additional magnetic frame has a recessed portion, and mounting grooves are provided on both sides of the recessed portion; Two sets of additional magnetic blocks are respectively installed in the mounting grooves on both sides of the recess; The additional magnetic frame is positioned above the magnetic suction frame, such that the two sets of additional magnetic blocks are located on the outside of the two magnetic strips and are symmetrically arranged about the magnet, and the two sets of additional magnetic blocks and the two magnetic strips are in a state of opposite pole attraction.

3. The dual-track magnetic suction load-bearing device as described in claim 1, characterized in that, The bracket is a lower frame bracket, which is used to support the bottom of the lightweight fan frame, and the upper end of the magnetic bracket is used to connect with the lightweight fan frame. The lightweight fan frame applies a downward first pressure to the magnetic frame under the action of gravity, causing the magnet and the two magnetic strips to move relative to each other. The first pressure is then counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, thereby keeping the lightweight fan frame in balance.

4. The dual-track magnetic suction load-bearing device as described in claim 1, characterized in that, The bracket is an upper frame bracket, which is used to support the top of the lightweight fan frame, and the lower end of the magnetic bracket is provided with a connecting part, which is used to connect with the lightweight fan frame. The lightweight fan frame applies a downward first pulling force to the magnetic frame under the action of gravity, so that the magnet and the two magnetic strips are relatively displaced. The first pulling force is counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, thereby keeping the lightweight fan frame in balance.

5. The dual-track magnetic suction load-bearing device as described in claim 2, characterized in that, The bracket is a lower frame bracket, which is used to support the bottom of the heavy-duty fan frame and to allow the upper end of the additional magnetic frame to abut against the inner surface of the heavy-duty fan frame. The heavy-duty fan frame applies a downward second pressure to the magnetic frame under the action of gravity, causing the magnet and the two magnetic strips to move relative to each other. The second pressure is counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, and the mutual magnetic attraction between the two sets of additional magnetic blocks and the magnet, thereby keeping the heavy-duty fan frame in balance.

6. The dual-track magnetic suction load-bearing device as described in claim 2, characterized in that, The bracket is an upper frame bracket, which is used to support the top of the heavy-duty fan frame, and the lower end of the magnetic bracket is provided with a connecting part, which is used to connect with the inner surface of the heavy-duty fan frame. The heavy-duty fan frame applies a downward second pulling force to the magnetic frame under the action of gravity, so that the magnet and the two magnetic strips are relatively displaced. The second pulling force is counteracted by the mutual magnetic attraction between the two magnetic strips and the magnet, and the mutual magnetic attraction between the two sets of additional magnetic blocks and the magnet, thereby keeping the heavy-duty fan frame in balance.

7. The dual-track magnetic suction load-bearing device as described in claim 1, characterized in that, There are two roller assemblies, which are respectively disposed at both ends of the magnet along the length of the magnetic frame.

8. The dual-track magnetic suction load-bearing device as described in claim 1, characterized in that, There is one roller assembly, which is located at the center of the lower surface of the magnetic holder; there are two magnets, which are symmetrically arranged about the roller assembly.

9. The dual-track magnetic suction load-bearing device as described in claim 8, characterized in that, The slide rail includes at least an arc-shaped slide rail or a square slide rail, and the magnetic strip includes at least a cylindrical magnetic strip or a square columnar magnetic strip.

10. A door and window assembly, characterized in that, Includes the dual-track magnetic suction load-bearing device as described in any one of claims 1-9.

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