A tail wheel assembly of a damping pulley device and a damping pulley device

Abstract

This utility model discloses a tail wheel assembly of a damping pulley device, including a connecting part, a tail wheel bracket, and two pulleys. The connecting part is disposed at the tail of the damper and extends along the length of the damper. The tail wheel bracket is rotatably connected to the connecting part. The two pulleys are respectively disposed on both sides of the tail wheel bracket and are used to slide inside the guide rail. The width w1 and height h1 of the connecting part are both smaller than the width w2 of the guide rail groove. Thus, during installation, the tail wheel assembly can be first rotated until the pulley's central axis is parallel to the guide rail, then the entire tail wheel assembly is inserted into the guide rail, at which point the connecting part is located at the guide rail groove. Finally, the tail wheel assembly is rotated back to its original position until the pulley's central axis is perpendicular to the guide rail, thus installing the tail wheel assembly into the guide rail. Therefore, using the above-mentioned tail wheel assembly eliminates the need for assembly inside the guide rail, making assembly and disassembly very convenient and efficient. In addition, this utility model also provides a damping pulley device incorporating the same.

Description

Technical Field

[0001] This utility model relates to the field of hardware accessories technology, specifically to a tail wheel assembly and a damping pulley device. Background Technology

[0002] This section provides only background information related to this application to enable those skilled in the art to understand this application more thoroughly and accurately, and it is not necessarily prior art.

[0003] Sliding doors are doors whose panels are slidably connected to the door frame. They are opened and closed by the lateral movement of the door panels. Typically, the door panels are connected to the door frame via a damping pulley system.

[0004] Currently, the damping pulley device includes a damper with a tail wheel assembly installed at its tail. When installing the damping pulley device inside the door frame guide rail, the damper can be easily installed into the guide rail because its width is smaller than the width of the guide rail groove. However, the width of the tail wheel assembly is larger than the width of the guide rail groove, making installation difficult. The common practice is to install it by setting up an inspection port, but this reduces the strength of the guide rail.

[0005] To address this issue, patent number CN217461824U discloses a dual tailwheel damping assembly. This assembly disassembles the tailwheel into a detachable tail connector and a tailwheel bracket. During installation, the tail connector is first connected to the damper. Then, the tail connector is inserted into the guide rail from one end of the slide groove. Next, the tailwheel bracket is inserted into the guide rail from the other end of the slide groove until it connects with the tail connector. Finally, the two are fixedly connected. By disassembling the tailwheel damping assembly into two parts, it can be installed and disassembled with the guide rail while maintaining its integrity, thus ensuring the structural strength of the guide rail and enhancing its safety.

[0006] However, when using the aforementioned tail wheel damping assembly, the connection and fixation between the tail connector and the tail wheel bracket need to be completed inside the guide rail. Since the space inside the guide rail is narrow, the assembly and disassembly are relatively troublesome and inefficient. Utility Model Content

[0007] In order to overcome the defects of the prior art, the present invention provides a tail wheel assembly and damping device for a damping pulley device, which can solve the problems of troublesome assembly and disassembly of the tail wheel assembly and low efficiency mentioned in the background art.

[0008] The technical solution adopted by this utility model to solve its problem is: A tail wheel assembly of a damping pulley device includes: A connecting portion is disposed at the tail of the damper and extends along the length of the damper; Tail wheel hanger, which is rotatably connected to the connecting part; Two pulleys are respectively arranged on both sides of the tail wheel hanger and are used to slide in the guide rail; Wherein, the width w1 and height h1 of the connecting part are both smaller than the width w2 of the guide rail groove. When the tail wheel assembly extends into the guide rail, the connecting part is located in the guide rail groove, and the tail wheel assembly can rotate inside the guide rail.

[0009] As an optional implementation, the two pulleys are arranged vertically and vertically offset in the height direction of the guide rail.

[0010] As an alternative implementation, one of the two pulleys is provided with a groove around its circumference.

[0011] As an optional implementation, both pulleys are provided with grooves around their circumference, and the widths of the two grooves are different.

[0012] As an optional implementation, the tail wheel hanger is provided with a mounting groove, the connecting part extends into the mounting groove and is rotatably connected to the mounting groove, and the connecting part can extend out of the mounting groove or be completely placed in the mounting groove.

[0013] As an optional implementation, the connecting part is provided with a first mounting hole, and the tail wheel bracket is provided with a second mounting hole that communicates with the mounting groove; When the connecting part is rotated relative to the tail wheel bracket until the connecting part is completely placed in the mounting groove, the first mounting hole and the second mounting hole are connected.

[0014] As an optional implementation, the first mounting hole is a through hole, and the second mounting hole is a screw hole.

[0015] As an optional implementation, it also includes a guide assembly disposed between the tail wheel hanger and the connecting portion to guide rotation. The guide assembly includes a guide groove and a guide block slidably disposed in the guide groove. One of the guide groove and the guide block is disposed on the mounting groove, and the other is disposed on the connecting portion.

[0016] As an optional implementation, the mounting groove is provided with several reinforcing ribs.

[0017] In addition, this utility model also provides a damping pulley device, including the above-mentioned tail wheel assembly and damper, wherein: The damper is fitted with a mounting base at its tail end, and the mounting base extends along the length of the damper and is provided with a connecting post to form the connecting part.

[0018] In summary, the present invention provides a tail wheel assembly and a damping pulley device. By providing a connecting part at the tail of the damper and rotating the connecting part to the tail wheel hanger, and by ensuring that the width and height of the connecting part are both smaller than the width of the guide rail groove, the tail wheel assembly can be easily installed during installation. First, the tail wheel assembly is rotated until the pulley's central axis is parallel to the guide rail. Then, the entire tail wheel assembly is inserted into the guide rail, with the connecting part located at the guide rail groove. Finally, the tail wheel assembly is rotated back to its original position until the pulley's central axis is perpendicular to the guide rail. This makes the installation and disassembly process very convenient and greatly improves efficiency. Attached Figure Description

[0019] Figure 1 This is an exploded view of the damping pulley device of this utility model; Figure 2 This is a schematic diagram of the damping pulley device of this utility model; Figure 3 This is a schematic diagram of the tail wheel hanger in the damping pulley device of this utility model; Figure 4 for Figure 2 An illustration of the explosion from another perspective; Figure 5 This is a cross-sectional schematic diagram of the damping pulley device of this utility model; Figure 6 This is a schematic diagram of the tail wheel hanger after it has been rotated and opened in the damping pulley device of this utility model; Figure 7 This is a schematic diagram of the guide rail structure of this utility model; Figure 8 This is a schematic diagram of the structure of the damping pulley device of this utility model when it is rotated to the point where the central axis of the pulley is parallel to the guide rail; Figure 9 for Figure 8 A schematic diagram of the tail wheel assembly of the medium-damping pulley device extending into the guide rail; Figure 10 for Figure 9 A schematic diagram of the structure of the medium-damping pulley device rotating and resetting until the pulley's central axis is perpendicular to the guide rail; Figure 11 for Figure 10 A schematic diagram of the structure in which the connecting part of the middle damping pulley device rotates relative to the tail wheel hanger until the damper is completely placed inside the guide rail.

[0020] The meanings of the reference numerals in the attached figures are as follows: 1. Fixed base; 11. Connecting part; 111. Second shaft hole; 112. First mounting hole; 13. Guide block; 2. Tail wheel hanger; 21. Mounting groove; 22. Guide groove; 23. Second mounting hole; 24. Reinforcing rib; 25. First shaft hole; 3. Pulley; 31. Roller groove; 4. Pin; 5. Locking bolt; 6. Damper; 7. Guide rail. Detailed Implementation

[0021] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0024] See Figure 1-11 This utility model provides a damping pulley device, including a damper 6 and a tail wheel assembly. The tail wheel assembly includes a connecting part 11, a tail wheel bracket 2, and two pulleys 3. The connecting part 11 is disposed at the tail of the damper 6 and extends along the length of the damper 6. The tail wheel bracket 2 is rotatably connected to the connecting part 11. The two pulleys 3 are respectively disposed on both sides of the tail wheel bracket 2 and are used to slide within the guide rail 7. The width w1 and height h1 of the connecting part 11 are both smaller than the width w2 of the groove in the guide rail 7. When the tail wheel assembly extends into the guide rail 7, the connecting part 11 is located in the groove of the guide rail 7, at which time the tail wheel assembly can rotate inside the guide rail 7.

[0025] Thus, during installation, first rotate the tail wheel assembly until the central axis of pulley 3 is parallel to the guide rail 7. Then, insert the entire tail wheel assembly into the guide rail 7. At this point, the connecting part 11 is located at the groove of the guide rail 7. Next, rotate the tail wheel assembly back to its original position until the central axis of pulley 3 is perpendicular to the guide rail 7, thus installing the tail wheel assembly into the guide rail 7. The installation and disassembly operation is very convenient. Therefore, when using the above-mentioned tail wheel assembly, there is no need to assemble the tail wheel assembly inside the guide rail 7, making installation and disassembly very convenient and greatly improving efficiency.

[0026] In this embodiment of the present invention, a fixing seat 1 is installed at the tail of the damper 6, and a connecting post is provided on the fixing seat 1 extending along the length direction of the damper 6 to form the aforementioned connecting part 11.

[0027] Furthermore, the two pulleys 3 are staggered vertically along the height of the guide rail 7. This arrangement allows the two pulleys 3 to slide against the top and bottom walls of the guide rail 7 respectively, thereby preventing the tail wheel assembly from jumping when sliding inside the guide rail 7 and improving the sliding stability of the damping pulley device inside the guide rail 7.

[0028] See also Figure 1 One of the two pulleys 3 has a groove 31 around its periphery. This arrangement allows the tail wheel assembly to have a floating gap in the width direction of the guide rail 7, thereby preventing the tail wheel assembly from sliding and getting stuck in the guide rail 7.

[0029] Of course, in other embodiments, grooves 31 can also be provided on both pulleys 3, as long as the widths of the two grooves 31 are different. This can also enable the tail wheel assembly to have a floating gap in the width direction of the guide rail 7, so it is not limited here.

[0030] See also Figure 3 The tail wheel hanger 2 has a mounting groove 21, and the connecting part 11 extends into the mounting groove 21 and is rotatably connected to the mounting groove 21. Specifically, the tail wheel hanger 2 has a first shaft hole 25 communicating with the mounting groove 21, and the connecting part 11 has a second shaft hole 111. A pin 4 passes through the first shaft hole 25 and the second shaft hole 111 to achieve a rotatable connection between the tail wheel hanger 2 and the connecting part 11. In addition, a guide assembly is included, which is disposed between the tail wheel hanger 2 and the connecting part 11 to guide the rotation. The guide assembly includes a guide groove 22 and a guide block 13 slidingly disposed in the guide groove 22. The guide groove 22 is disposed on the tail wheel hanger 2 and communicates with the mounting groove 21, and the guide block 13 is disposed on the two outer side walls of the connecting part 11. Through the guiding effect of the guide assembly, the stability and reliability of the mutual rotation process between the connecting part 11 and the tail wheel hanger 2 can be ensured.

[0031] When the connecting part 11 or the tail wheel hanger 2 is rotated, the connecting part 11 can extend out of the mounting groove 21 or be completely placed inside the mounting groove 21. For example... Figure 6 As shown, when the tail wheel hanger 2 is rotated clockwise relative to the connecting part 11 until they abut and reach the limit, the connecting part 11 extends out of the mounting groove 21; as Figure 2 As shown, when the tail wheel hanger 2 is rotated counterclockwise relative to the connecting part 11 until the two are in contact and limited, the connecting part 11 is completely placed in the mounting groove 21.

[0032] The connecting part 11 has a first mounting hole 112, and the tail wheel hanger 2 has a second mounting hole 23 that connects to the mounting groove 21. When the connecting part 11 or the tail wheel hanger 2 is rotated until the connecting part 11 is completely placed inside the mounting groove 21, the first mounting hole 112 and the second mounting hole 23 are connected. Preferably, the first mounting hole 112 is a through hole, and the second mounting hole 23 is a threaded hole. By using a locking bolt 5 passing through the first mounting hole 112 and threadedly connecting it to the second mounting hole 23, the tail wheel hanger 2 and the connecting part 11 can be fixed, thereby fixing the tail wheel hanger 2 and the damper 6.

[0033] In addition, the mounting groove 21 is provided with several reinforcing ribs 24, which improves the support strength of the tail wheel hanger 2.

[0034] See Figure 8-11 The following is a schematic diagram of the process of installing the damping pulley device of this utility model into the guide rail 7: First, rotate the tail wheel hanger 2 or the connecting part 11 until the connecting part 11 extends out of the mounting groove 21. Then, rotate the damping pulley device as a whole and make the central axis of the pulley 3 of the tail wheel assembly parallel to the guide rail 7. Figure 8 As shown; Next, the tail wheel assembly is inserted entirely into the guide rail 7. At this point, the tail wheel hanger 2 and the two pulleys 3 are both located within the grooves of the guide rail 7, while the connecting part 11 is located at the opening of the groove in the guide rail 7. Figure 9 As shown; Next, since the width w1 of the connecting part 11 is smaller than the width w2 of the groove of the guide rail 7, the damping pulley device can be rotated and reset as a whole so that the central axis of the pulley 3 of the tail wheel assembly is perpendicular to the guide rail 7. At this time, the two pulleys 3 in the tail wheel assembly slide and abut against the inner top wall and inner bottom wall of the guide rail 7, respectively. Figure 10 As shown; Finally, the connecting part 11 on the damper 6 is rotated relative to the tail wheel hanger 2 until the damper is completely placed inside the guide rail 7. At this time, the connecting part 11 is completely placed in the mounting groove 21 and the first mounting hole 112 is connected to the second mounting hole 23. Then, the locking bolt 5 is passed through the first mounting hole 112 and threadedly connected to the second mounting hole 23 to fix the tail wheel hanger 2 to the connecting part 121. Figure 11 As shown, the assembly is now complete.

[0035] In summary, the present invention provides a tail wheel assembly and a damping pulley device. By providing a connecting part 11 at the tail of the damper 6 and rotatably connecting the connecting part 11 to the tail wheel hanger 2, and by ensuring that the width and height of the connecting part 11 are both smaller than the width of the groove in the guide rail 7, the tail wheel assembly can be easily installed by first rotating it until the central axis of the pulley 3 is parallel to the guide rail 7, then inserting the entire tail wheel assembly into the guide rail 7, at which point the connecting part 11 is located at the groove in the guide rail 7, and then rotating the tail wheel assembly back to its original position until the central axis of the pulley 3 is perpendicular to the guide rail 7. This greatly improves the efficiency of installation and disassembly.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0037] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0039] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A tail wheel assembly of a damping pulley device, characterized in that, include: A connecting portion is disposed at the tail of the damper and extends along the length of the damper; Tail wheel hanger, which is rotatably connected to the connecting part; Two pulleys are respectively arranged on both sides of the tail wheel hanger and are used to slide inside the guide rail; Wherein, the width w1 and height h1 of the connecting part are both smaller than the width w2 of the guide rail groove. When the tail wheel assembly extends into the guide rail, the connecting part is located in the guide rail groove, and the tail wheel assembly can rotate inside the guide rail.

2. The tail wheel assembly of claim 1, wherein, The two pulleys are staggered vertically along the height of the guide rail.

3. The tail wheel assembly of claim 1, wherein, One of the two pulleys is provided with a groove around its circumference.

4. The tail wheel assembly according to claim 1, characterized in that, Both pulleys are provided with grooves around their circumference, and the widths of the two grooves are different.

5. The tail wheel assembly according to any one of claims 1-4, characterized in that, The tail wheel hanger has a mounting groove, and the connecting part extends into the mounting groove and is rotatably connected to the mounting groove. The connecting part can extend out of the mounting groove or be completely placed in the mounting groove.

6. The tail wheel assembly according to claim 5, characterized in that, The connecting part is provided with a first mounting hole, and the tail wheel bracket is provided with a second mounting hole that communicates with the mounting groove. When the connecting part is rotated relative to the tail wheel bracket until the connecting part is completely placed in the mounting groove, the first mounting hole and the second mounting hole are connected.

7. The tail wheel assembly according to claim 6, characterized in that, The first mounting hole is a through hole, and the second mounting hole is a screw hole.

8. The tail wheel assembly according to claim 5, characterized in that, It also includes a guide assembly disposed between the tail wheel hanger and the connecting part to guide rotation. The guide assembly includes a guide groove and a guide block slidably disposed in the guide groove. One of the guide groove and the guide block is disposed on the mounting groove, and the other is disposed on the connecting part.

9. The tail wheel assembly according to claim 5, characterized in that, The mounting groove is provided with several reinforcing ribs.

10. A damping pulley device, characterized in that, Includes the tail wheel assembly and damper as described in any one of claims 1-9, wherein: The damper is fitted with a mounting base at its tail end, and the mounting base extends along the length of the damper and is provided with a connecting post to form the connecting part.

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