Rolling friction track of roller shutter door

Abstract

The rolling friction rail comprises two rail units, and each rail unit comprises a sliding rail which comprises a bottom plate, side plates, a top plate, a connecting plate and a mounting plate, and the side plates, the top plate, the connecting plate and the mounting plate are formed by sequentially bending and extending inwards from the two long edges of the bottom plate; the guide mechanism is arranged at one end of the sliding rail in the length direction and comprises two guide units which are oppositely arranged at an interval; the guide unit comprises a supporting plate and a rolling assembly, the rolling assembly comprises a lead screw, a roller rotationally arranged on the lead screw in a sleeving mode through two bearings, shaft sleeves arranged on the lead screw in a sleeving mode and located at the two ends of the roller and fixing end caps arranged at the two ends of the lead screw and used for fixing the lead screw to the supporting plate, and the two bearings are axially embedded in the two ends of the roller; the axis of the roller extends in the depth direction of the sliding groove, and the roller is located on the outer side of the sliding groove in the length direction of the sliding rail; the two supporting plates are parallel to each other or the distance between the two supporting plates is gradually increased from the position close to the sliding rail to the position away from the sliding rail. The guide mechanism is in rolling contact with the roller shutter door, the noise is low, and the guide precision is high.

Description

Technical Field

[0001] This utility model relates to the field of roller shutter door technology, specifically to a roller shutter door rolling friction track. Background Technology

[0002] Roller shutters are widely used in industrial plants, shopping malls, garages, and other places. Their main function is as a rollable door, offering good protection and convenience. However, in actual use, roller shutters often encounter the problem of friction between the track and the curtain, which directly affects the lifespan and smooth operation of the door. In the design of roller shutters, the track is usually made of metal and is located at the top of the door. The curtain needs to pass through these tracks during the raising and lowering process to ensure smooth movement of the door. However, the entrance to the track, where the curtain enters the track, is often the area with the greatest friction. This is because there is direct contact between the curtain and the track, especially as the curtain enters the track, the contact angle and contact area constantly change. This change causes the friction to fluctuate, increasing curtain wear, generating significant noise, and affecting the normal operation of the door.

[0003] To reduce friction at the track entrance of the roller shutter door, metal deformation is typically used. For details, please refer to [link / reference needed]. Figure 5 The entrance to the track is squeezed into an "8" shape or a "trumpet" shape to reduce friction between the curtain and the track by increasing the width of the entrance. The core idea of ​​this method is to change the shape of the track entrance so that the curtain can enter the track more smoothly, thereby reducing friction. However, this method still has some shortcomings.

[0004] Firstly, while the deformable metal track entry can alleviate friction to some extent, friction between the curtain and the metal is still unavoidable due to the hardness and wear resistance of the metal material, especially when the friction is higher at the track entry. Over time, this friction between the curtain and the metal track will still lead to increased wear and noise.

[0005] Secondly, the method of metal deformation has certain limitations in adjusting the shape and precision of the track entrance. This method often requires external force to squeeze the track entrance into a specific shape, and this deformation process may lead to a decrease in the structural strength and stability of the track, thereby affecting the operational safety and reliability of the gate. Utility Model Content

[0006] The purpose of this invention is to provide a rolling friction track for roller shutters, solving the problems of excessive friction at the track entrance, severe wear and tear on the roller shutter, and high noise levels in existing technologies. This improvement aims to reduce direct friction between the roller shutter and the metal track, extend the service life of the roller shutter, and improve operational stability.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A rolling friction track for a roller shutter door has two track units, which respectively support opposite side edges of the roller shutter door and limit the range of motion of the roller shutter door. Each track unit includes:

[0009] The slide rail includes a base plate, side plates formed by bending and extending inward from the two long sides of the base plate, a top plate, a connecting plate, and a mounting plate, with a groove formed between the two side plates;

[0010] A guiding mechanism is provided at one end of the slide rail in the length direction, for rolling contact with the roller shutter door and guiding the roller shutter door into the slide rail at an angle. The guiding mechanism includes two guide units arranged at relative intervals, and the two guide units cooperate to form a guide position.

[0011] The guide unit includes a support plate and a rolling assembly disposed on the support plate. The rolling assembly includes a lead screw passing through the support plate, rollers rotatably sleeved on the lead screw via two bearings, bushings sleeved on the lead screw and located at both ends of the rollers, and fixed end caps disposed at both ends of the lead screw for fixing the lead screw to the support plate. The two bearings are axially embedded at both ends of the rollers, and the bushings are used to limit the relative position of the lead screw and the rollers in the axial direction.

[0012] The axis of the roller extends along the depth direction of the groove, and the roller is located outside the groove along the length direction of the slide rail;

[0013] The two support plates are parallel to each other, or the distance between the two support plates gradually increases from the side closer to the slide rail to the side farther away from the slide rail.

[0014] In some embodiments, the guide mechanism is made of rigid metal.

[0015] In some embodiments, the diameter of the roller is no greater than 25 mm.

[0016] In some embodiments, the number of rolling components is at least two, and the at least two rolling components are arranged at intervals along the length direction of the slide rail on the support plate.

[0017] In some embodiments, the support plate is detachably mounted on the slide rail by means of a fastener.

[0018] In some embodiments, the support plate is welded to the slide rail.

[0019] In some embodiments, the support plate includes a main board, a fixing plate formed by bending inward from opposite sides of the main board in sequence, and a collar disposed on the fixing plate;

[0020] The collar is used to install the lead screw, the fixed end cap and the bushing are located on both sides of the collar, and the end of the main plate away from the roller is recessed inward along the length of the slide groove to form an arc-shaped opening;

[0021] The two fixing plates are respectively fixed to the mounting plate and the base plate;

[0022] or / with;

[0023] The motherboard is fixed to the side panel.

[0024] In some embodiments, the lead screw includes a first stepped portion, a second stepped portion located at both ends of the first stepped portion, and a threaded structure formed on the second stepped portion, wherein the diameter of the first stepped portion is larger than the diameter of the second stepped portion;

[0025] The roller is rotatably sleeved on the first stepped portion, and the bushing is sleeved at the junction of the first stepped portion and the second stepped portion;

[0026] The bushing has a through hole for the lead screw to pass through, the through hole including a first hole section and a second hole section, the inner diameter of the first hole section being the same as the diameter of the first stepped portion, and the inner diameter of the second hole section being the same as the diameter of the second stepped portion.

[0027] In some embodiments, the connecting plate is parallel to the side plate, and the top plate, the bottom plate, and the mounting plate are parallel.

[0028] In some embodiments, the top plate and the mounting plate have their two end faces in the longitudinal direction gradually inclined toward each other from the side plate toward the connecting plate.

[0029] Due to the application of the above technical solution, the beneficial effects of this application compared with the prior art are as follows:

[0030] The roller shutter door rolling friction track provided in this application transforms traditional direct contact friction into roller rolling friction by setting rollers.

[0031] First, the use of rollers significantly reduces frictional resistance. Traditional direct contact friction generates significant frictional force, requiring more force to operate the roller shutter and easily causing mechanical wear. Roller friction, on the other hand, reduces the contact area and coefficient of friction, thereby greatly reducing the sliding resistance of the roller shutter, making its opening and closing smoother and easier. Reducing friction not only lightens the burden on the drive system but also helps extend the service life of related components.

[0032] Secondly, the rolling friction of the rollers helps improve the stability and guiding accuracy of the roller shutter. The stable rolling of the rollers within the track effectively prevents the roller shutter from deviating and swaying, ensuring that the roller shutter maintains a stable trajectory during opening and closing. This improvement reduces the jamming of the roller shutter caused by uneven friction, ensuring smooth operation within the track and thus improving the overall operational reliability of the roller shutter.

[0033] Furthermore, the rolling friction design of the rollers reduces noise levels. Traditional frictional contact often generates significant noise, affecting the comfort of the user environment. The way the rollers roll within the tracks greatly reduces friction noise, making the roller shutter door operate more quietly and improving the user experience.

[0034] Finally, the use of rolling friction also simplifies maintenance. Roller systems are generally more durable and have longer maintenance intervals than direct friction systems, reducing frequent repair and replacement costs. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the track unit in one embodiment of the present invention;

[0037] Figure 2 for Figure 1 The diagram shows the structure of the guide unit.

[0038] Figure 3 for Figure 2 A schematic cross-sectional view of the guide unit shown.

[0039] Figure 4 This is a schematic diagram of the lead screw structure in one embodiment of the present invention;

[0040] Figure 5This refers to the existing track structure.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1-Slide rail; 11-Base plate; 12-Side plate; 13-Top plate; 14-Connecting plate; 15-Mounting plate; 2-Guide unit; 21-Support plate; 211-Main board; 212-Fixing plate; 213-Collar ring; 214-Arch-shaped opening; 22-Screw rod; 221-First step; 222-Second step; 223-Threaded structure; 23-Roller; 24-Shaft sleeve; 25-Bearing; 26-Fixing end cap; 3-Slide groove. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0046] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0047] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] Please see Figures 1 to 3 This application provides a rolling friction track for a roller shutter door. The rolling friction track for a roller shutter door has two track units. The two track units are used to support the opposite two side edges of the roller shutter door and limit the movement range of the roller shutter door. The track unit includes a slide rail 1 and a guide mechanism disposed at one end of the slide rail 1 in the length direction.

[0050] Specifically, the slide rail 1 includes a base plate 11, side plates 12 formed by bending and extending inward from the two long sides of the base plate 11, a top plate 13, a connecting plate 14, and a mounting plate 15, with a groove 3 formed between the two side plates 12.

[0051] In some embodiments, the connecting plate 14 is parallel to the side plate 12, and the top plate 13, bottom plate 11, and mounting plate 15 are parallel.

[0052] In some embodiments, the top plate 13 and the mounting plate 15 gradually tilt and move closer together from the side plate 12 toward the connecting plate 14 along their length.

[0053] The guiding mechanism is used to make rolling contact with the roller shutter and guide the roller shutter into the slide 3. The guiding mechanism includes two guide units 2 arranged at relative intervals, and the two guide units 2 cooperate to form a guide position.

[0054] The guide unit 2 includes a support plate 21 and a rolling assembly disposed on the support plate 21. The rolling assembly includes a lead screw 22 passing through the support plate 21, a roller 23 rotatably sleeved on the lead screw 22 via two bearings 25, bushings 24 sleeved on the lead screw 22 and located at both ends of the roller 23, and fixing end caps 26 disposed at both ends of the lead screw 22 for fixing the lead screw 22 to the support plate 21. The two bearings 25 are axially embedded at both ends of the roller 23, and the bushings 24 are used to limit the relative position of the lead screw 22 and the roller 23 in the axial direction.

[0055] The axis of roller 23 extends along the depth direction of slide groove 3, and along the length direction of slide rail 1, roller 23 is located outside slide groove 3. The two support plates 21 are parallel to each other, or the distance between the two support plates 21 gradually increases from the side closer to slide rail 1 to the side farther away from slide rail 1.

[0056] In some embodiments, the guide mechanism is made of rigid metal.

[0057] In some embodiments, the diameter of roller 23 is no greater than 25 mm.

[0058] In some embodiments, the number of rolling components is at least two, and the at least two rolling components are arranged at intervals on the support plate 21 along the length direction of the slide rail 1. This application does not specifically limit the number and setting angle of the rolling components. As described above, when at least two rolling components are provided, a corresponding number of collars 213 are sequentially provided on the fixing plate 212 in the extending direction.

[0059] In some embodiments, the support plate 21 is detachably mounted on the slide rail 1 by means of a fastener. Specifically, the fastener may be a bolt or a rivet.

[0060] In some embodiments, the support plate 21 is welded to the slide rail 1.

[0061] In some embodiments, the support plate 21 includes a main plate 211, a fixing plate 212 formed by bending inwards on both sides of the main plate 211, and a collar 213 disposed on the fixing plate 212. The collar 213 is used to install the lead screw 22. The fixing end cap 26 and the bushing 24 are respectively located on both sides of the collar 213. The end of the main plate 211 away from the roller 23 is recessed inwards along the length direction of the slide groove 3 to form an arc-shaped opening 214. The two fixing plates 212 are respectively fixed to the mounting plate 15 and the base plate 11; or / and fixed to the side plate 12 with the main plate 211. The arc-shaped opening 214 can reduce the interference generated during the sliding of the roller shutter door and improve the structural strength of the support plate 21.

[0062] Please see Figure 4In some embodiments, the lead screw 22 includes a first stepped portion 221, second stepped portions 222 located at both ends of the first stepped portion 221, and a threaded structure 223 formed on the second stepped portion 222. The diameter of the first stepped portion 221 is larger than the diameter of the second stepped portion 222. The roller 23 is rotatably sleeved on the first stepped portion 221, and the bushing 24 is sleeved at the junction of the first stepped portion 221 and the second stepped portion 222.

[0063] In detail, the bushing 24 has a through hole for the lead screw 22 to pass through. The through hole includes a first hole section and a second hole section. The inner diameter of the first hole section is the same as the diameter of the first step portion 221, and the inner diameter of the second hole section is the same as the diameter of the second step portion 222.

[0064] In some embodiments, the fixed end cap 26 is threaded or welded to the lead screw 22. Specifically, the fixed end cap 26 can be any one of a nut, a cap nut, or a retaining ring.

[0065] Due to the application of the above technical solution, the beneficial effects of this application compared with the prior art are as follows:

[0066] The roller shutter door rolling friction track provided in this application transforms traditional direct contact friction into roller rolling friction by setting rollers.

[0067] First, the use of rollers significantly reduces frictional resistance. Traditional direct contact friction generates significant frictional force, requiring more force to operate the roller shutter and easily causing mechanical wear. Roller friction, on the other hand, reduces the contact area and coefficient of friction, thereby greatly reducing the sliding resistance of the roller shutter, making its opening and closing smoother and easier. Reducing friction not only lightens the burden on the drive system but also helps extend the service life of related components.

[0068] Secondly, the rolling friction of the rollers helps improve the stability and guiding accuracy of the roller shutter. The stable rolling of the rollers within the track effectively prevents the roller shutter from deviating and swaying, ensuring that the roller shutter maintains a stable trajectory during opening and closing. This improvement reduces the jamming of the roller shutter caused by uneven friction, ensuring smooth operation within the track and thus improving the overall operational reliability of the roller shutter.

[0069] Furthermore, the rolling friction design of the rollers reduces noise levels. Traditional frictional contact often generates significant noise, affecting the comfort of the user environment. The way the rollers roll within the tracks greatly reduces friction noise, making the roller shutter door operate more quietly and improving the user experience.

[0070] Finally, the use of rolling friction also simplifies maintenance. Roller systems are generally more durable and have longer maintenance intervals than direct friction systems, reducing frequent repair and replacement costs.

[0071] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rolling friction track for a roller shutter door, comprising two track units, wherein the two track units are used to support opposite side edges of the roller shutter door and limit the range of motion of the roller shutter door, characterized in that, The orbital unit includes: The slide rail includes a base plate, side plates formed by bending and extending inward from the two long sides of the base plate, a top plate, a connecting plate, and a mounting plate, with a groove formed between the two side plates; A guiding mechanism is provided at one end of the slide rail in the length direction, for rolling contact with the roller shutter door and guiding the roller shutter door into the slide rail at an angle. The guiding mechanism includes two guide units arranged at relative intervals, and the two guide units cooperate to form a guide position. The guide unit includes a support plate and a rolling assembly disposed on the support plate. The rolling assembly includes a lead screw passing through the support plate, rollers rotatably sleeved on the lead screw via two bearings, bushings sleeved on the lead screw and located at both ends of the rollers, and fixed end caps disposed at both ends of the lead screw for fixing the lead screw to the support plate. The two bearings are axially embedded at both ends of the rollers, and the bushings are used to limit the relative position of the lead screw and the rollers in the axial direction. The axis of the roller extends along the depth direction of the groove, and the roller is located outside the groove along the length direction of the slide rail; The two support plates are parallel to each other, or the distance between the two support plates gradually increases from the side closer to the slide rail to the side farther away from the slide rail.

2. The roller shutter door rolling friction track as described in claim 1, characterized in that, The guiding mechanism is made of rigid metal.

3. The roller shutter door rolling friction track as described in claim 1, characterized in that, The diameter of the roller is no greater than 25mm.

4. The roller shutter door rolling friction track as described in claim 1, characterized in that, The number of the rolling components is at least two, and the at least two rolling components are arranged at intervals along the length direction of the slide rail on the support plate.

5. The roller shutter door rolling friction track as described in claim 1, characterized in that, The support plate is detachably mounted on the slide rail via a fastener.

6. The roller shutter door rolling friction track as described in claim 1, characterized in that, The support plate is welded to the slide rail.

7. The roller shutter door rolling friction track as described in claim 5 or 6, characterized in that, The support plate includes a main board, a fixing plate formed by bending and extending inward from opposite sides of the main board, and a collar disposed on the fixing plate; The collar is used to install the lead screw, the fixed end cap and the bushing are located on both sides of the collar, and the end of the main plate away from the roller is recessed inward along the length direction of the slide groove to form an arc-shaped opening; The two fixing plates are respectively fixed to the mounting plate and the base plate; or / with; The motherboard is fixed to the side panel.

8. The rolling friction track for a roller shutter door as described in claim 1, characterized in that, The lead screw includes a first stepped portion, a second stepped portion located at both ends of the first stepped portion, and a threaded structure formed on the second stepped portion, wherein the diameter of the first stepped portion is larger than the diameter of the second stepped portion; The roller is rotatably sleeved on the first stepped portion, and the bushing is sleeved at the junction of the first stepped portion and the second stepped portion; The bushing has a through hole for the lead screw to pass through, the through hole including a first hole section and a second hole section, the inner diameter of the first hole section being the same as the diameter of the first stepped portion, and the inner diameter of the second hole section being the same as the diameter of the second stepped portion.

9. The rolling friction track for a roller shutter door as described in claim 1, characterized in that, The connecting plate is parallel to the side plate, and the top plate, the bottom plate, and the mounting plate are parallel.

10. The rolling friction track for a roller shutter door as described in claim 1, characterized in that, The top plate and the mounting plate gradually slope towards each other from the side plate toward the connecting plate along their length.

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