Quick-release belt tensioning device

Abstract

A quick-release belt tensioning device comprises a mounting plate and a base, a belt pulley is arranged on the mounting plate, a rotatable screw is arranged on the base, a fixing block is arranged on the base, one end of the screw is rotatably arranged in the fixing block, and the other end of the screw is in threaded connection with the mounting plate. A groove is formed in the position, close to the fixing block, of the base, a clamping and fixing plate is rotationally arranged in the groove and comprises a rectangular clamping and fixing plate body and a pivot formed by extending from the bottom face of the rectangular clamping and fixing plate body, the rectangular clamping and fixing plate body is provided with a first flange and a second flange connected with the first flange, and the length of the first flange is larger than that of the second flange. The device is fast to disassemble and assemble and very high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture accessories in daily life, in particular to a quick-detachable belt tensioning device. Background Art

[0002] In large shopping malls, conference rooms or personal residences, it is necessary to install sliding doors such as double-door sliding doors. In order to facilitate the sliding doors to be pushed and pulled and positioned to a specific position during the sliding process, it is necessary to install a hanging pulley limiter in the sliding door structure. When the sliding door moves to a certain position, the hanging pulley limiter contacts the hanging pulley and is temporarily fastened together, thereby achieving temporary positioning of the sliding door.

[0003] In addition, the sliding and pulling movement of the sliding door is achieved by the cooperation between the belt and the pulley. For example, in a synchronous reverse linkage sliding door, the synchronous reverse linkage of the sliding door can be controlled by winding the belt between the two pulleys.

[0004] However, during belt rotation, due to the drag of the door, the belt is overstretched with increasing use, resulting in an increase in belt length. This stretched belt cannot return to its original length, which prevents the belt from being tightly wound around the pulley. Eventually, the belt falls off the pulley, causing malfunction of the synchronous reverse linkage door. To this end, a belt tensioning device needs to be installed in the door and window guide rail to tighten the belt on the pulley to ensure that the belt does not fall off the pulley.

[0005] When a belt tensioner malfunctions, it must be promptly removed from the door / window guide rails, replaced with a new belt tensioner, and then installed. In the prior art, the belt tensioner must be installed from both ends of the guide rails, and then the ends must be sealed. Consequently, maintaining or replacing the belt tensioner is extremely cumbersome. This is because, in practice, the guide rails are sealed at both ends, making them impossible to remove. The tensioner must first be removed from both ends of the guide rails, clearing them of obstructions. Only then can the belt or belt tensioner be replaced or installed. Consequently, disassembly and assembly in the prior art is complex.

[0006] Therefore, the industry needs to provide a belt tensioning device to overcome the above-mentioned defects of the prior art. Utility Model Content

[0007] The purpose of the utility model is to solve the above problems and provide a quick-release belt tensioning device.

[0008] In order to meet the purpose of this utility model, this utility model adopts the following technical solutions:

[0009] A quick-release belt tensioner comprises: a mounting plate on which a pulley is mounted, and a base; a rotatable screw disposed on the base, the screw being threadably connected to the mounting plate; a fixed block disposed on the base, one end of the screw being rotatably mounted within the fixed block, and the other end being threadably connected to the mounting plate; a groove further defined on the base near the fixed block, a retaining plate being rotatably mounted within the groove, the retaining plate comprising a rectangular retaining plate body and a pivot extending from the bottom surface of the rectangular retaining plate body; the rectangular retaining plate body having a first rib and a second rib connected to the first rib, wherein the first rib is longer than the second rib.

[0010] Preferably, a longitudinal perforation is defined within the recess, the pivot of the securing plate being rotatably disposed within the perforation, and an adjustment screw connected to the pivot is disposed at the bottom of the perforation. When a user rotates the adjustment screw using a tool such as a hexagonal screwdriver, the adjustment screw simultaneously drives the pivot, thereby causing the rectangular securing plate body to rotate, ultimately changing the positions of the first and second ribs.

[0011] Preferably, a mounting hole is transversely opened on the fixing block, and the screw rod has a rod body and a driven gear plate arranged at one end of the rod body; the rod body passes through the mounting hole and is threadedly connected to the mounting plate; the driven gear plate is arranged in the mounting hole.

[0012] Further preferably, the bottom of the groove extends downward to form a column, a through hole is longitudinally defined in the column, the through hole being in communication with the mounting hole, and a drive pin for driving the screw is disposed in the through hole. The user rotates the drive pin using an appropriate tool such as a hexagonal screwdriver, which in turn drives the screw to rotate, ultimately achieving axial movement of the mounting plate toward the screw, thereby tightening the belt on the pulley and achieving tensioning.

[0013] Further preferably, the driving pin comprises a pin body and a driving toothed disc located at the top of the pin body; the pin body is positioned within the through hole, and the driving toothed disc meshes with the driven toothed disc. The meshing of the two allows power to be transmitted from the driving pin to the screw, thereby achieving the belt tensioning effect described above.

[0014] Preferably, the pin body has a circumferentially defined retaining groove; the column body has a transversely defined retaining hole; and a retaining screw passes through the retaining hole and extends into the retaining groove. Thus, the retaining screw and the retaining groove cooperate to secure the driving pin axially within the through hole while allowing the driving pin to continue rotating.

[0015] Preferably, a longitudinally extending fold is formed on one end of the mounting plate close to the base, and a threaded hole is provided on the fold; the rod body of the screw is cooperatively connected with the threaded hole, and an elastic opening clamp is provided at the position where the rod body passes through the threaded hole to prevent the rod body from rotating too much and detaching from the mounting plate.

[0016] Optionally, the fixing block forms a support plate at one end close to the folded edge, and the folded edge is supported on the support plate. The provision of the support plate can ensure that when the mounting plate moves axially relative to the screw rod, the mounting plate can always move along the axial direction without angular deviation, thereby making the axial movement of the mounting plate more stable and smooth. In other words, if there is no support plate, since the folded edge of the mounting plate and the rod body are only threadedly connected in the thickness direction of the folded edge, the connection part is very small, and it is easy for the mounting plate to produce a certain angle relative to the rod body due to the gap between the threaded connections, which is not conducive to the axial translation of the mounting plate, and easily leads to an increase in the axial translation resistance, thereby increasing the operating resistance.

[0017] Preferably, the pulley can be of various types, such as pulleys with various cross-sectional shapes, and can be made of any suitable material, and is preferably made of a rubber material with good elasticity and high wear resistance to increase its service life and reduce noise generated during rolling. In this embodiment, preferably, the pulley includes a wheel body and a rotating shaft passing through the wheel body, the wheel body rotates around the rotating shaft to achieve rolling, and the mounting plate has an axial hole, and the rotating shaft is fixed in the axial hole, thereby fixing the entire pulley to the bottom of the mounting plate.

[0018] Further preferably, a wheel sleeve is provided on the outside of the wheel body, which protects the wheel body and further prevents the belt from falling off the wheel body.

[0019] The mounting plate further comprises another fixing plate, wherein a rotation hole is provided on the mounting plate, and the other fixing plate has a pivot, and the pivot is rotatably disposed in the rotation hole.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0021] The present invention allows for the direct removal of a quick-release belt tensioner without removing the door frames at both ends of the door or window. This is achieved using the following structure. For example, the door or window guide rail has a mounting slot. Under normal circumstances, when the quick-release belt tensioner is installed in the door or window guide rail, the second sidewall snaps into the mounting slot, thereby securing the entire quick-release belt tensioner within the door or window guide rail. When the quick-release belt tensioner needs to be removed from the door or window guide rail, the retaining plate is simply rotated so that the second sidewall disengages from the mounting slot and the first sidewall is parallel to the length of the belt tensioner and exposed from the gap between the two mounting slots. The entire quick-release belt tensioner can then be removed from the gap. In other words, the width of the entire quick-release belt tensioner is smaller than the width of the gap, allowing it to be removed for replacement or maintenance.

[0022] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0024] Figure 1 This is a three-dimensional assembly diagram of the quick-release belt tensioning device of the present invention.

[0025] Figure 2 for Figure 1 The three-dimensional structural exploded view of the quick-release belt tensioner shown.

[0026] Figure 3a This is a planar structural diagram of the quick-release belt tensioning device of the present utility model.

[0027] Figure 3b for Figure 3a The structure cross-sectional view of the quick-release belt tensioner along the AA direction is shown.

[0028] Figure 4 This is a three-dimensional structural diagram of the quick-release belt tensioning device of the utility model after being installed on the door and window track. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. In addition, "connected" or "coupled" used here may include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0031] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0032] In one embodiment of the present invention, reference Figure 1-4 A quick-release belt tensioning device 100 includes: a mounting plate 10 on which a pulley 20 is provided, and a base 40; a rotatable screw 46 is provided on the base 40, and the screw 46 is threadedly connected to the mounting plate 10.

[0033] Specifically, a fixing block 41 is provided on the base 40. One end of the screw 46 is rotatably mounted within the fixing block 41, while the other end is threadedly connected to the mounting plate 10. In this embodiment, since the screw 46 is rotatably mounted within the fixing block 41 and merely rotates without axial movement, rotation of the screw 46 causes the mounting plate 10, which is threadedly connected to the screw 46, to move along the axial direction of the screw 46, toward or away from the screw 46. Since the belt tensioning device functions to tighten a belt (not shown) around the pulley 20, it is preferred that the rotation of the screw 46 causes the mounting plate 10 to move axially toward the screw 46, thereby causing the pulley 20 fixed to the mounting plate 10 to also move closer to the screw 46, ultimately tightening the belt wrapped around the pulley 20.

[0034] In other words, the quick-release belt tensioning device 100 provided by the present invention is installed at one end of the door and window track (not shown) in the length direction. Pulleys are installed at both ends of the door and window track, and the belt is wrapped around the two pulleys. Therefore, when the quick-release belt tensioning device 100 is working, the belts at both ends of the door and window track are tensioned.

[0035] In order to achieve the purpose of the present invention, that is, to enable the quick-release belt tensioning device 100 to be directly removed without removing the door frames at both ends of the door or window, the following structure is adopted. Specifically, a groove 42 is further formed on the base 40 near the fixing block 41. The fixing plate 30 is rotatably mounted in the groove 42. The fixing plate 30 includes a rectangular fixing plate body 32 and a pivot 34 extending from the bottom surface of the rectangular fixing plate body 32. The rectangular fixing plate body 32 has a first rib 322 and a second rib 324 connected to the first rib 322. The first rib 322 is longer than the second rib 324.

[0036] refer to Figure 4 The door / window guide rail 70 has a mounting slot 72. Normally, when the quick-release belt tensioner 100 is installed in the door / window guide rail 70, the second rib 324 engages with the mounting slot 72, thereby securing the entire quick-release belt tensioner 100 within the door / window guide rail 70. To remove the quick-release belt tensioner 100 from the door / window guide rail 70, the retaining plate 30 is simply rotated so that the second rib 324 disengages from the mounting slot 72 and the first rib 322 aligns with the length of the belt tensioner and emerges from the gap between the two mounting slots 72. The quick-release belt tensioner 100 can then be removed from the gap. In other words, the width of the entire quick-release belt tensioner 100 is smaller than the width of the gap, allowing it to be removed for replacement or maintenance.

[0037] Preferably, a through-hole 424 is longitudinally defined within the recess 42, and the pivot 34 of the securing plate 30 is rotatably disposed within the through-hole 424. An adjustment screw 80 connected to the pivot 34 is disposed at the bottom of the through-hole 424. When a user rotates the adjustment screw 80 using a tool such as a hexagonal screwdriver, the adjustment screw 80 simultaneously drives the pivot 34 to rotate, thereby causing the rectangular securing plate body 32 to rotate, ultimately changing the positions of the first and second ribs 322 and 324.

[0038] Preferably, a mounting hole 412 is horizontally opened on the fixing block 41, and the screw 46 has a rod body 462 and a driven gear plate 464 arranged at one end of the rod body 462; the rod body 462 passes through the mounting hole 412 and is threadedly connected to the mounting plate 10; the driven gear plate 464 is arranged in the mounting hole 412.

[0039] Further preferably, the bottom of the groove 42 extends downward to form a column 422, and a through hole 4222 is longitudinally defined in the column 422. The through hole 4222 is in communication with the mounting hole 412, and a driving pin 44 for driving the screw 46 is disposed in the through hole 4222. The user rotates the driving pin 44 with an appropriate tool such as a hexagonal screwdriver, and the driving pin 44 further drives the screw 46 to rotate, ultimately achieving axial movement of the mounting plate 10 toward the screw 46, thereby tightening the belt on the pulley 20 to achieve tensioning.

[0040] Further preferably, the driving pin 44 comprises a pin body 442 and a driving toothed disc 444 located at the top of the pin body 442. The pin body 442 is positioned within the through hole 4222, and the driving toothed disc 444 meshes with the driven toothed disc 464. The meshing of the two allows power to be transmitted from the driving pin 44 to the screw 46, thereby achieving the belt tensioning effect described above.

[0041] Preferably, a limiting groove 446 is defined circumferentially on the pin body 442, a limiting hole 4224 is defined transversely on the column body 422, and a limiting screw 60 passes through the limiting hole 4224 and extends into the limiting groove 446. Thus, the limiting screw 60 and the limiting groove 446 cooperate to secure the drive pin 44 axially within the through hole 4222, while allowing the drive pin 44 to continue rotating.

[0042] Preferably, a longitudinally extending folded edge 12 is formed at one end of the mounting plate 10 close to the base 40, and a threaded hole 124 is provided on the folded edge 12; the rod body 462 of the screw 46 is cooperatively connected with the threaded hole 124, and an elastic opening clamp 50 is provided at the position where the rod body 462 passes through the threaded hole 124 to prevent the rod body 462 from rotating too much and detaching from the mounting plate 10.

[0043] Optionally, a support plate 43 is formed at one end of the fixing block 41 near the folded edge 12, and the folded edge 12 is supported on the support plate 43. The provision of the support plate 43 can ensure that when the mounting plate 10 moves axially relative to the screw rod 46, the mounting plate 10 can always move along the axial direction without angular deviation, thereby making the axial movement of the mounting plate 10 more stable and smooth. In other words, if there is no support plate 43, since the folded edge 12 of the mounting plate 10 and the rod body 462 only have a threaded connection in the thickness direction of the folded edge 12, the connection portion is very small, and it is easy for the mounting plate 10 to produce a certain angle relative to the rod body 462 due to the gap between the threaded connections, which is not conducive to the axial translation of the mounting plate 10, and easily leads to an increase in the axial translation resistance, thereby increasing the operating resistance.

[0044] Preferably, the pulley 20 can be various types of pulleys, such as pulleys with various cross-sectional shapes, and the pulley 20 can be made of any appropriate material, and is preferably made of a rubber material with good elasticity and high wear resistance to increase its service life and reduce noise generated during rolling. In this embodiment, preferably, the pulley 20 has a wheel body 22 and a rotating shaft 24 passing through the wheel body 22, and the wheel body 22 rotates around the rotating shaft 24 to achieve rolling, and the mounting plate 10 has an axial hole 14, and the rotating shaft 24 is fixedly disposed in the axial hole 14, thereby fixing the entire pulley 20 to the bottom of the mounting plate 10.

[0045] Further preferably, a wheel sleeve 26 is provided on the outside of the wheel body 22 , and the wheel sleeve 26 protects the wheel body 22 and further prevents the belt from falling off the wheel body 22 .

[0046] Furthermore, according to another embodiment of the present invention, another retaining plate 30 may be provided on the mounting plate 10. Correspondingly, a rotation hole 16 is provided on the mounting plate 10, and a pivot 34 of the retaining plate 30 is rotatably disposed within the rotation hole 16. Providing two retaining plates 30 can further enhance the structural stability of the entire quick-release belt tensioner 100, avoiding the structural imbalance caused by only one retaining plate being installed on the base 40. In other words, if only a retaining plate is provided on the base 40, the overall gravity of the quick-release belt tensioner 100 may cause one side of the mounting plate 10 to tilt downward, thereby deteriorating the structural stability. However, providing a retaining plate on the mounting plate 10 ensures the structural stability of the quick-release belt tensioner 100.

[0047] Those skilled in the art will appreciate that the steps, measures, and schemes in the various operations, methods, and processes discussed in this application may be interchanged, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted.

[0048] The above description is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A quick-release belt tensioning device, comprising: A mounting plate and a base for a pulley are arranged on it, a rotatable screw is arranged on the base, a fixed block is arranged on the base, one end of the screw is rotatably arranged in the fixed block, and the other end is threadedly connected to the mounting plate, and is characterized in that: a groove is provided on the base near the fixed block, and a fixing plate is rotatably arranged in the groove, and the fixing plate includes a rectangular fixing plate body and a pivot extending from the bottom surface of the rectangular fixing plate body, the rectangular fixing plate body has a first rib and a second rib connected to the first rib, and the length of the first rib is greater than that of the second rib.

2. The quick-release belt tensioning device according to claim 1, characterized in that: A through hole is longitudinally provided in the groove, the pivot of the clamping plate is rotatably arranged in the through hole, and an adjusting screw connected to the pivot is provided at the bottom of the through hole.

3. The quick-release belt tensioning device according to claim 2, characterized in that: A mounting hole is horizontally provided on the fixing block, and the screw rod has a rod body and a driven gear plate arranged at one end of the rod body; the rod body passes through the mounting hole and is threadedly connected to the mounting plate; the driven gear plate is arranged in the mounting hole.

4. The quick-release belt tensioning device according to claim 3, characterized in that: The bottom of the groove extends downward to form a column, a through hole is longitudinally provided in the column, the through hole is communicated with the mounting hole, and a driving pin for driving the screw to rotate is provided in the through hole.

5. The quick-release belt tensioning device according to claim 4, characterized in that: The driving pin comprises a pin body and a driving gear disc located at the top end of the pin body; the pin body is placed in the through hole, and the driving gear disc is engaged with the driven gear disc.

6. The quick-release belt tensioning device according to claim 5, characterized in that: A limiting groove is formed on the circumference of the pin body; a limiting hole is formed on the column body in the transverse direction; and a limiting screw passes through the limiting hole and extends into the limiting groove.

7. The quick-release belt tensioning device according to claim 6, characterized in that: A longitudinally extending fold is formed at one end of the mounting plate close to the base, and a threaded hole is provided on the fold; the rod body of the screw is cooperatively connected with the threaded hole, and an elastic opening clamp is provided at the portion where the rod body passes through the threaded hole.

8. The quick-release belt tensioning device according to claim 7, characterized in that: The pulley includes a wheel body and a rotating shaft passing through the wheel body. The wheel body rotates around the rotating shaft. An axial hole is provided on the mounting plate, and the rotating shaft is fixed in the axial hole.

9. The quick-release belt tensioning device according to claim 8, characterized in that: A wheel sleeve is sleeved on the outside of the wheel body.

10. The quick-release belt tensioning device according to claim 9, characterized in that: The mounting plate further comprises another fixing plate, wherein a rotation hole is provided on the mounting plate, and the other fixing plate has a pivot, and the pivot is rotatably disposed in the rotation hole.

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