Magnetic attraction load-bearing bearing pulley and door and window

Abstract

The utility model discloses a magnetic attraction load-bearing bearing pulley and a door and window, the bearing pulley is characterized in that a first component and a second component are mounted in a first annular mounting groove of an outer ring of the pulley, and the first component and the second component are magnetically attracted, so that the interaction force of the inner ring and the outer ring of the bearing pulley is directly converted into the attraction force of two magnets; therefore, the overall bearing capacity of the pulley is obviously improved; moreover, due to the fact that attraction force exists between the two magnets, rolling and friction are not prone to being generated in the sliding process, noise is reduced, and when the bearing pulley moves to a rugged track, the attraction force serves as buffering force and plays a damping role.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window technical field, especially a kind of magnetic load bearing bearing pulley and door and window. BACKGROUND

[0002] In hardware sliding door and window system, bearing pulley bears the key function of load bearing, and its smooth degree is closely related to the force required when door leaf is pushed and pulled. The performance of hardware bearing pulley directly affects the convenience and comfort of user when operating door and window.

[0003] The bearing commonly used in prior art is mostly roller bearing or needle bearing. However, when the bearing is pushed and pulled on the track of door frame, the roller or needle bearing directly contacts with the track, which is easy to produce vibration, resulting in unstable pushing and pulling process, and such vibration can further cause noise problem, which seriously affects the user experience. In addition, long-term vibration can also cause problems such as track deformation and bearing wear, thereby shortening the service life of door and window system. SUMMARY

[0004] The utility model aims at providing a kind of magnetic load bearing bearing pulley and door and window, to solve the problem that existing bearing is easy to produce vibration during pushing and pulling, resulting in unstable pushing and pulling.

[0005] The utility model embodiment provides a kind of magnetic load bearing bearing pulley, including pulley outer ring, first component and second component, the middle part of the pulley outer ring is hollow along the axial direction and is formed into first hollow area, the inner along of the pulley outer ring is provided with first annular installation slot, the first annular installation slot is communicated with the first hollow area, the first component and second component are embedded in the first annular installation slot from the first hollow area, and the second component is fixedly connected to the first annular installation slot, the first component and second component are magnetically attracted, and the middle part of the first component and second component is used for the rotating shaft to pass through.

[0006] Specifically, the first component and the second component are annular magnets, the middle part of the second component is hollow along the axial direction and is formed into second hollow area, the first component is embedded in the second hollow area, the outer edge of the second component is embedded in the first annular installation slot, and the middle part of the first component is provided with shaft hole for the rotating shaft to pass through.

[0007] Specifically, the outer edge of the first component is provided with second annular installation slot, and the inner edge of the second component is clamped in the second annular installation slot.

[0008] Specifically, one of the first component and the second component is a permanent magnet, and the magnetic poles of the permanent magnet are distributed radially inside and outside or left and right.

[0009] Specifically, the second assembly is arranged at the side of the first assembly.

[0010] Specifically, two second assemblies are arranged, and the first assembly is located between the two second assemblies.

[0011] Specifically, when the two second assemblies are both permanent magnets, the side of the two second assemblies close to each other is magnetically repulsive.

[0012] Specifically, the first assembly and the second assembly are both provided with an axle hole for the rotating shaft to pass through.

[0013] Specifically, one of the first assembly and the second assembly is a magnetic conductor, and the other is a permanent magnet; or the first assembly and the second assembly are both permanent magnets.

[0014] The utility model embodiment further provides a door and window, comprising a track and a magnetic attraction load bearing bearing pulley which is slidably arranged on the track.

[0015] The utility model embodiment provides a magnetic attraction load bearing bearing pulley and a door and window. The first assembly and the second assembly are installed in the first annular mounting groove of the pulley outer ring, and the first assembly and the second assembly are magnetically attracted to each other, so that the interaction force between the inner ring and the outer ring of the bearing pulley is directly converted into the attractive force of the two magnets, thereby significantly improving the load bearing capacity of the pulley as a whole. Moreover, since the two magnets have an attractive force, rolling and friction are not easy to occur during sliding, noise generation is reduced, and when the bearing pulley moves to an uneven track, the attractive force acts as a buffer force to play a shock-absorbing role. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is an explosion schematic view of the magnetic attraction load bearing bearing pulley provided in the first embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional schematic view of the magnetic attraction load bearing bearing pulley provided in the first embodiment of the utility model;

[0019] Figure 3 It is a magnetic pole distribution diagram of the permanent magnet in the first embodiment of the utility model;

[0020] Figure 4 A schematic view of the magnetic attraction load bearing bearing pulley installed on the track provided by the first embodiment of the utility model;

[0021] Figure 5 An exploded schematic view of the magnetic attraction load bearing bearing pulley provided by the second embodiment of the utility model;

[0022] Figure 6 A cross-sectional schematic view of the magnetic attraction load bearing bearing pulley provided by the second embodiment of the utility model;

[0023] Figure 7 A magnetic pole distribution diagram of the permanent magnet in the second embodiment of the utility model;

[0024] Figure 8 A schematic view of the magnetic attraction load bearing bearing pulley installed on the track provided by the second embodiment of the utility model;

[0025] Figure 9 An exploded schematic view of the magnetic attraction load bearing bearing pulley provided by the third embodiment of the utility model;

[0026] Figure 10 A cross-sectional schematic view of the magnetic attraction load bearing bearing pulley provided by the third embodiment of the utility model;

[0027] Figure 11 A magnetic pole distribution diagram of the permanent magnet in the third embodiment of the utility model;

[0028] Figure 12 A schematic view of the magnetic attraction load bearing bearing pulley installed on the track provided by the third embodiment of the utility model.

[0029] Explanation of the marks in the figure:

[0030] 1, pulley outer ring; 11, first hollow area; 12, first annular mounting groove;

[0031] 2, first assembly; 21, first shaft hole; 22, second annular mounting groove;

[0032] 3, second assembly; 31, second hollow area; 32, second shaft hole;

[0033] 4, rotating shaft;

[0034] 5, track. DETAILED DESCRIPTION

[0035] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] It should be understood that the terms "comprising" and "including" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0037] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0038] It should be further understood that the term "and / or" as used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0039] Please refer to Figures 1-2 and Figure 4 The embodiment of the present application provides a magnetic suction load bearing bearing pulley, which comprises a pulley outer ring 1, a first assembly 2 and a second assembly 3, the middle part of the pulley outer ring 1 is hollow along the axial direction to form a first hollow area 11, the inner side of the pulley outer ring 1 is provided with a first annular mounting groove 12, the first annular mounting groove 12 is communicated with the first hollow area 11, the first assembly 2 and the second assembly 3 are embedded in the first annular mounting groove 12 from the first hollow area 11, and the second assembly 2 is fixedly connected to the first annular mounting groove 12, the first assembly 2 and the second assembly 3 are magnetically attracted, and the middle part of the first assembly 2 and the second assembly 3 is used for the rotating shaft 4 to pass through.

[0040] In this embodiment, the outer ring 1 of the pulley is made of high-strength and wear-resistant metal material, such as aluminum alloy or stainless steel. The middle part of the outer ring 1 is hollowed out along the axial direction by precise machining process to form a first hollow area 11, which provides space for the subsequent installation of two magnets. On the inner edge of the outer ring 1, a first annular mounting groove 12 is also machined to ensure that the first annular mounting groove 12 is in communication with the first hollow area 11. Then the first component 2 and the second component 3 are embedded into the first annular mounting groove 12 from the first hollow area 11. The second component 3 is fixedly connected in the first annular mounting groove 12, so that the outer ring 1 and the second component 3 are fixed as a whole, and the first component 2 is attracted by the second component 3 in the middle of the axial line of the first hollow area 11. During installation, the positions of the first component 2 and the second component 3 in the first annular mounting groove 12 are aligned, and the two magnetically attractive surfaces of the two magnets face each other. The rotating shaft 4 is usually made of high-strength alloy steel material, which is subjected to heat treatment process to improve its strength and toughness. The rotating shaft 4 is inserted through the shaft hole reserved in the middle of the first component 2 and the second component 3, thereby achieving the installation of the rotating shaft 4.

[0041] In this embodiment, the first component 2 and the second component 3 are installed in the outer ring 1 of the pulley, and the first component 2 and the second component 3 are magnetically attracted to each other. The interaction force between the inner and outer rings of the bearing pulley is directly converted into the attractive force of the two magnets, thereby significantly improving the load-bearing capacity of the entire pulley. Moreover, the two magnets have an attractive force between them, but this attractive force is not fixed during sliding, i.e. the inner and outer rings of the bearing pulley are not hard-connected like conventional ball bearings. When the bearing pulley moves on an uneven track, the attractive force acts as a buffer to reduce vibration. The attractive force of the two magnets can balance the components of the bearing inner ring in the outer ring 1 of the pulley, so that there is no rolling and friction between the bearing inner and outer rings like conventional ball bearings, and the bearing pulley slides more smoothly.

[0042] In specific implementation, the bearing pulley is usually installed on doors, windows or other devices that need to be opened by sliding. In order to reduce the noise generated during sliding, a low-noise material (such as engineering plastic or rubber) can be used as a liner on the outer edge of the outer ring 1 of the pulley to reduce direct contact between the outer edge of the outer ring 1 of the pulley and the installed device. For example, a layer of nylon or polytetrafluoroethylene (PTFE) coating is added to the outer side of the outer ring 1 of the pulley, which can reduce friction and noise.

[0043] Specifically, the first component 2 and the second component 3 are both ring-shaped magnets. The middle part of the second component 3 is hollowed out along the axial direction to form a second hollow area 31, and the first component 2 is embedded in the second hollow area 31. The outer edge of the second component 3 is embedded in the first annular mounting groove 12, and the middle part of the first component 2 is provided with a shaft hole for the rotating shaft 4 to pass through.

[0044] In this embodiment, both the first component 2 and the second component 3 are configured as rings (see reference). Figure 1 , Figure 5 and Figure 9 This shape facilitates the generation of a uniform magnetic field in the circumferential direction, ensuring relatively balanced forces in all directions during the rotation of the entire bearing pulley. Furthermore, the second component 3 has a second hollow area 31, within which the first component 2 is embedded. The outer edge of the second component 3 is then embedded in the first annular mounting groove 12, forming a nested structure for the entire bearing pulley. This design ensures a tight connection between the two magnets and the outer ring 1 of the pulley, resulting in a compact structure. The first component 2 has a shaft hole (referred to as the first shaft hole 21 for ease of explanation) in its center for the rotating shaft 4 to pass through, ensuring a fixed relative position between the rotating shaft 4 and the first component 2, providing stable support for the rotation of the bearing pulley.

[0045] When the rotating shaft 4 passes through the first shaft hole 21 of the first component 2 and is installed on the corresponding equipment, the first component 2 and the second component 3 are attracted by magnetism, generating a mutual magnetic force. This magnetic force keeps the inner ring (composed of the first component, the rotating shaft, etc.) balanced in the outer ring 1 of the pulley. When an external force is applied to make the pulley rotate, due to the attraction between the magnets and this stable nested structure, the inner and outer rings of the bearing pulley can rotate relatively smoothly relative to each other, realizing the normal operation of the pulley.

[0046] In practical implementation, the annular area of ​​the second component 3 can be set to be larger than the annular area of ​​the first component 2, so that the entire first component 2 is embedded in the second hollow area 31 (see reference). Figure 6 This makes the connection between the two magnets tighter. In other embodiments, the annular area of ​​the second component 3 can also be set to be smaller than the annular area of ​​the first component 2. In this case, the first component 2 is not completely embedded in the second hollow area 31 (see reference). Figure 2 Specifically, the outer edge of the first component 2 is provided with a second annular mounting groove 22, and the inner edge of the second component 3 is clamped in the second annular mounting groove 22. That is, the area of ​​the first component 2 corresponding to the area where the second annular mounting groove 22 is provided is embedded in the second hollow area 31, so that the inner edge of the second component 3 is clamped in the second annular mounting groove 22.

[0047] Specifically, such as Figure 3 and Figure 7 As shown, one of the first component 2 and the second component 3 is a permanent magnet, and the magnetic poles of the permanent magnet are distributed radially inward or outward or left and right.

[0048] In this embodiment, when one of the first component 2 and the second component 3 is a permanent magnet and its magnetic poles are radially distributed inwards and outwards, a radial magnetic field will be formed in the pulley from the inside to the outside of the permanent magnet. Taking the second component 3 as an example where the magnetic poles are radially distributed inwards and outwards (see reference...). Figure 3 (a) and Figure 7 In (a) of the diagram, the inner side of the second component 3 is the N pole and the outer side is the S pole (or vice versa). In this case, the first component 2, which is attracted to it, will be subjected to a radial magnetic force. This radially distributed magnetic force makes the interaction between the two magnets more direct. During the rotation of the pulley, it can provide a stable attraction in the radial direction, which helps to maintain the relative positional relationship between the first component 2 and the second component 3, thereby ensuring the stable operation between the inner and outer rings of the bearing pulley.

[0049] If the permanent magnet poles are distributed left and right, taking the second component 3 as a permanent magnet with its poles distributed left and right as an example (see reference). Figure 3 (b) and Figure 7 In (b) of the diagram, assuming the left side is the N pole and the right side is the S pole (or vice versa), a magnetic field will be formed in the left-right direction. In this case, the direction of the magnetic force between the first component 2 and the second component 3 changes, and is no longer simply radial. When the pulley is running, the left-right distributed magnetic force will generate a lateral force on the magnet assembly. This force will affect the overall force balance of the pulley. In other implementation scenarios, the pulley with left-right distributed magnetic poles can use magnetic force to counteract the lateral component force generated by the track tilt, preventing the pulley from being displaced by the lateral force, ensuring smooth sliding of the pulley, and greatly improving the horizontal stability of the pulley.

[0050] Specifically, such as Figure 10 As shown, the second component 3 is disposed on the side of the first component 2.

[0051] In this embodiment, when the bearing pulley is subjected to lateral force, the second component 3 is preferably positioned on the side of the first component 2. For example, when the bearing pulley is installed on an inclined track or when the equipment is subjected to lateral impact during operation, the lateral magnetic force generated by the two magnets attracting each other on the sides can directly counteract these external forces. Compared to the nested arrangement of the two magnets in the previous embodiment, this structure can more effectively prevent the two magnets from shifting due to lateral force, ensuring that the bearing pulley can still operate stably under complex working conditions.

[0052] Specifically, there are two second components 3, which are spaced apart, with the first component 2 located between the two second components 3.

[0053] In the foregoing embodiments, the second component 3 is mainly disposed on one side of the first component 2 (see reference). Figure 10The second assembly 3 is arranged on both sides of the first assembly 2 (refer to Figure 10 The second assembly 3 is arranged on both sides of the first assembly 2 (refer to

[0054] Specifically, as shown in FIG. 2, when the two second assemblies 3 are both permanent magnets, the two second assemblies 3 repel each other on the side close to each other. Figure 11

[0055] In this embodiment, the two second assemblies 3 are both magnetically attracted to the first assembly 2, so the magnetic poles on the side close to each other of the two second assemblies 3 are set to be the same, i.e., N or S (refer to FIG. 3). Figure 11 The two second assemblies 3 repel each other on the side close to each other.

[0056] Specifically, as shown in FIG. 2, when the two second assemblies 3 are both permanent magnets, the two second assemblies 3 repel each other on the side close to each other. Figure 9

[0057] ​​In the foregoing embodiment, since the first assembly 2 is nestedly connected to the second assembly 3, only the first assembly 2 is provided with the shaft hole, and the rotating shaft 4 can pass through the two magnets. In the present embodiment, the second assembly 3 is arranged at the side of the first assembly 2 (arranged at the same side or arranged at two sides respectively). In order to enable the rotating shaft 4 to pass through the two magnets, the first assembly 2 and the second assembly 3 both need to be provided with the shaft hole. For the convenience of description, the shaft hole of the first assembly 2 is named as the first shaft hole 21, and the shaft hole of the second assembly 3 is named as the second shaft hole 32. The size of the second shaft hole 32 can be set to be the same as the size of the first shaft hole 21, and the sizes of the two shaft holes are greater than the shaft diameter of the rotating shaft 4. Alternatively, the size of the second shaft hole 32 can be set to be greater than the size of the first shaft hole 21. At this time, the size of the first shaft hole 21 is greater than the shaft diameter of the rotating shaft 4, so that the rotating shaft 4 can pass through the second shaft hole 32 and also pass through the first shaft hole 21.

[0058] Specifically, one of the first assembly 2 and the second assembly 3 is a magnetic conductor, and the other is a permanent magnet; or both the first assembly 2 and the second assembly 3 are permanent magnets.

[0059] In the present embodiment, the magnetic conductor is a material that can guide and enhance the magnetic field. It does not have the ability to spontaneously generate a magnetic field itself, but when it is in an external magnetic field, the atomic magnetic moments inside the magnetic conductor will align under the action of the external magnetic field, so that it exhibits magnetism and can significantly enhance the surrounding magnetic field strength. Common magnetic conductor materials include iron, cobalt, nickel, and their alloys. The permanent magnet refers to a material that can maintain its magnetism for a long time after being magnetized. It has a unique crystal structure and internal atomic arrangement, which enables the atomic magnetic moments to spontaneously maintain the same direction, thereby generating a stable magnetic field. Permanent magnets do not need continuous external magnetic field to maintain their magnetism. Common permanent magnet materials include neodymium iron boron, ferrite, aluminum nickel cobalt, etc. In order to optimize the magnetic field distribution between the two magnets: one of the two magnets is a permanent magnet, and the other is a magnetic conductor. That is, the first assembly 2 is a magnetic conductor, and the second assembly 3 is a permanent magnet, or the first assembly 2 is a permanent magnet, and the second assembly 3 is a magnetic conductor. The permanent magnet can generate a stable original magnetic field. The magnetic conductor can guide and concentrate the magnetic field generated by the permanent magnet. This arrangement helps to focus the magnetic field more accurately in the desired area. Alternatively, both the first assembly 2 and the second assembly 3 can be set as permanent magnets. The two permanent magnets can construct a stable magnetic circuit and guide the direction of magnetic lines, so that the magnetic lines are concentrated in a specific area.

[0060] In a specific implementation, in order to enhance the magnetism of the two magnets, the magnetic conductive body can be made of a high magnetic permeability material, such as a permalloy (iron-nickel alloy), and the use of such a high magnetic permeability material as the magnetic conductive body can more efficiently guide the magnetic lines generated by the permanent magnet, so that more magnetic lines pass through the magnetic conductive body, thereby significantly enhancing the magnetism between the magnetic conductive body and the permanent magnet. The permanent magnet can also be made of a high-performance permanent magnet material, such as neodymium iron boron, and the use of a neodymium iron boron permanent magnet can generate a stronger original magnetic field, thereby increasing the magnetism with the magnetic conductive body.

[0061] The magnetic conductive body and the permanent magnet can also be designed as a toothed structure, and the two are engaged with each other, which can significantly increase the contact area, promote the conduction of the magnetic lines, and enhance the magnetism between the two. In addition, an additional external magnetic field can be applied around the magnetic conductive body and the permanent magnet, and the direction of the magnetic field is consistent with the direction of the magnetic field of the permanent magnet. According to the principle of superposition of magnetic fields, the superposition of the external magnetic field and the magnetic field of the permanent magnet increases the total magnetic field strength, thereby enhancing the magnetism between the magnetic conductive body and the permanent magnet. If it is necessary to enhance the efficiency of the magnetic circuit, a magnetic conductive material (such as silicon steel) can be used in the outer ring 1 of the pulley to optimize the distribution of the magnetic lines, reduce magnetic leakage, and improve the magnetic attraction effect of the two magnets.

[0062] As shown in Figure 4 , Figure 8 and Figure 12 , the utility model embodiment further provides a door and window, which comprises a track 5 and a magnetic attraction load bearing bearing pulley slidingly arranged on the track 5.

[0063] In the embodiment, the outer edge of the pulley outer ring 1 is provided with a groove, the track 5 is provided with a protruding structure, the groove of the pulley outer ring 1 is installed on the track 5 corresponding to the protruding structure, and can slide along the track 5, thereby realizing the sliding connection of the magnetic attraction load bearing bearing pulley and the track 5. The rotating shaft 4 passes through the first hollow area 11 and the first shaft hole 21 (the second shaft hole 32), at this time the bearing force F acts on the rotating shaft 4, the rotating shaft 4 is fixed as a whole with the first assembly 2, and the whole bearing pulley is always supported by the track 5 and can roll on the track 5, so the bearing force F is converted into the magnetic attraction force acting between the first assembly 2 and the second assembly 3. This arrangement can effectively reduce the noise caused by the bumping and vibration of the bearing force F caused by the unevenness of the bearing track, and can effectively reduce the direct vibration caused by rolling relative to the bearing with a roller.

[0064] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this, and anyone skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A magnetic attractive load bearing bearing pulley, characterized by, The pulley outer ring, the first assembly and the second assembly, the middle part of the pulley outer ring is hollowed in the axial direction to form a first hollow area, the inner edge of the pulley outer ring is provided with a first annular mounting groove, the first annular mounting groove is communicated with the first hollow area, the first assembly and the second assembly are embedded in the first annular mounting groove from the first hollow area, and the second assembly is fixedly connected to the first annular mounting groove, the first assembly and the second assembly are magnetically attracted, and the middle parts of the first assembly and the second assembly are used for the rotating shaft to pass through.

2. The magnetic attractive load bearing bearing pulley of claim 1, wherein: The first assembly and the second assembly are annular magnets, the middle part of the second assembly is hollowed in the axial direction to form a second hollow area, the first assembly is embedded in the second hollow area, the outer edge of the second assembly is embedded in the first annular mounting groove, and the middle part of the first assembly is provided with a shaft hole for the rotating shaft to pass through.

3. The magnetic attractive load bearing bearing pulley of claim 2, wherein: The outer edge of the first assembly is provided with a second annular mounting groove, and the inner edge of the second assembly is clamped in the second annular mounting groove.

4. The magnetic attractive load bearing bearing pulley of claim 2, wherein: One of the first assembly and the second assembly is a permanent magnet, and the magnetic poles of the permanent magnet are distributed in the radial direction.

5. The magnetic attractive load bearing bearing pulley of claim 1, wherein: The second assembly is arranged on the side edge of the first assembly.

6. The magnetic attractive load bearing bearing pulley of claim 5, wherein: The second assembly is provided with two, and the two second assemblies are arranged at intervals, and the first assembly is located between the two second assemblies.

7. The magnetic attractive load bearing bearing pulley of claim 6, wherein: When the two second assemblies are both permanent magnets, the side of the two second assemblies close to each other repels magnetically.

8. The magnetic attractive load bearing bearing pulley of any of claims 5-7, wherein: The first assembly and the second assembly are both provided with a shaft hole for the rotating shaft to pass through.

9. The magnetic attractive load bearing bearing pulley of claim 1, wherein: One of the first assembly and the second assembly is a magnetic conductor, and the other is a permanent magnet; or the first assembly and the second assembly are both permanent magnets.

10. A door or window, characterised in that: The magnetic attraction bearing pulley comprises a track and a magnetic attraction bearing pulley slidingly arranged on the track.

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