A head pulley assembly and a damping pulley device

Abstract

This utility model discloses a head wheel assembly of a damping pulley device, including a fixed base, a base, and two hanging pulley groups. The fixed base is disposed at the head of the damper; the base is rotatably mounted on the fixed base; the two hanging pulley groups are symmetrically arranged on both sides of the base; the hanging pulley groups are used to slide within a guide rail. The fixed base has an elastic portion that abuts against the base and drives the base to rotate to one side, causing the hanging pulley groups to tilt downwards and abut against the guide rail, and causing the damper to rotate to the other side, causing the tail of the damper to tilt downwards. Therefore, when the damping pulley device is installed in the guide rail, both the hanging pulley groups and the tail wheel assembly located at the tail of the damper tilt downwards and slide close to the inner bottom wall of the guide rail, effectively preventing door bounce, thus extending the service life of the door and door frame, and reducing noise. Furthermore, 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 head 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, damping pulley devices include a damper, a head wheel assembly at the head of the damper, and a tail wheel assembly at the tail of the damper. The pulleys in both the head and tail wheel assemblies slide within the door frame guide rail. However, due to assembly gaps, the pulleys on the head and tail wheel assemblies cannot always remain tightly against the inner wall of the guide rail after the damping pulley device is installed. Consequently, when the door collides with the door frame, the door will bounce, potentially damaging both the door and the frame, generating noise, and reducing the user experience. Utility Model Content

[0005] In order to overcome the defects mentioned above in the prior art, the present invention provides a head wheel assembly and a damping pulley device, which can solve the problem of door jumping when colliding with the door frame mentioned in the background art, thereby extending the service life of the door and door frame, and reducing noise.

[0006] The technical solution adopted by this utility model to solve its problem is: A head pulley assembly of a damping pulley device includes: A mounting base, which is configured on the damper head; The base is rotatably mounted on the fixed seat; Two hanging bracket pulley groups are symmetrically arranged and located on both sides of the base; the hanging bracket pulley groups are used to slide within the guide rail. The fixed base is provided with an elastic part, which abuts against the base and drives the base to rotate to one side so that the hanging pulley group tilts down and abuts against the guide rail, and causes the damper to rotate to the other side and the tail of the damper to tilt down.

[0007] As an optional implementation, the base is made of nylon material, and the elastic part is a spring sheet integrally formed on the fixed base.

[0008] As an optional implementation, the hanger pulley assembly includes a hanger body and two pulleys disposed on the hanger body and spaced apart along the extension direction of the guide rail, wherein the hanger body is detachably connected to the base.

[0009] As an optional implementation, the bracket body and the base are detachably connected via a slotted snap-fit ​​structure, wherein: The slotted block snapping structure includes a positioning slot and a positioning block that slides into the positioning slot. Both the positioning slot and the positioning block are arranged to extend along the extension direction of the guide rail. One of the positioning groove and the positioning block is disposed on the bracket body, and the other is disposed on the base.

[0010] As an optional implementation, the end of the bracket body is provided with a limiting block. When the positioning block slides into the positioning groove until the limiting block abuts against the base, the bracket body is limited.

[0011] As an optional implementation, the base is further provided with a locking assembly, which includes a threaded hole on the base and a locking bolt screwed into the threaded hole, and the bracket body is provided with a slot for engaging with the locking bolt. When the bracket body is in a limited position, the slot communicates with the threaded hole.

[0012] As an optional implementation, the end of the hanging bracket body is further provided with a bristle assembly, the bristle assembly including a mounting plate and a brush disposed on the mounting plate, wherein: The outer side of the bracket body is provided with a blind mounting hole, and an opening is provided through the side of the blind mounting hole. The mounting plate is embedded in the blind mounting hole, and the brush bristles are provided through the opening. The opening end of the blind hole is fitted with a sealing block.

[0013] As an optional implementation, the base is also provided with an adjustment assembly, which includes a lifting nut and an adjustment pin for driving the lifting nut to rotate. The lifting nut is used to be threadedly connected to a bolt on the door hanging box, and the adjustment pin has an adjustment hole at one end away from the lifting nut.

[0014] As an optional implementation, the lifting nut is provided with a first retaining tooth, and the adjusting pin is provided with a second retaining tooth at one end near the lifting nut, wherein the first retaining tooth and the second retaining tooth engage with each other.

[0015] In addition, this utility model also provides a damping pulley device, including the above-mentioned head wheel assembly, damper and tail wheel assembly, wherein the head wheel assembly is disposed at the head of the damper and the tail wheel assembly is disposed at the tail of the damper; When the damping pulley device is installed inside the guide rail, the hanging pulley group and the tail wheel assembly in the head wheel assembly both tilt downwards and abut against the inner bottom wall of the guide rail.

[0016] In summary, the head wheel assembly and damping pulley device of this utility model have the following beneficial effects: (1) By providing an elastic part on the fixed base, the elastic part abuts against the base and drives the base to rotate to one side so that the hanging pulley assembly tilts down and abuts against the guide rail, and the damper rotates to the other side so that the tail of the damper tilts down. Thus, when the damping pulley device is installed in the guide rail, the hanging pulley assembly and the tail wheel assembly provided at the tail of the damper both tilt down and slide close to the bottom wall of the guide rail, thereby effectively preventing the door from jumping, thus extending the service life of the door and door frame, and reducing noise.

[0017] (2) By setting the adjustment component inside the base of the head wheel component, the volume of the door panel hanging box can be reduced, which in turn reduces the volume of the door panel frame, saving materials and reducing costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the damping pulley device of this utility model; Figure 2 This is an exploded view of the damping pulley device of this utility model; Figure 3 This is a schematic diagram of the structure of the bracket body in the damping pulley device of this utility model; Figure 4 This is a partial structural diagram of the head wheel assembly in the damping pulley device of this utility model; 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 structure of the damping pulley device of this utility model after the spring plate drives the base to rotate.

[0019] The meanings of the reference numerals in the attached figures are as follows: 1. Damper; 2. Head wheel assembly; 21. Fixing base; 211. Elastic part; 22. Base; 221. Positioning groove; 222. Threaded hole; 23. Hanger pulley block; 231. Hanger body; 2311. Positioning block; 2312. Limiting block; 2313. Mounting blind hole; 2314. Opening; 2315. Slot; 232. Pulley; 233. Sealing block; 24. Locking bolt; 25. Lifting nut; 251. First locking tooth; 26. Adjusting pin; 261. Second locking tooth; 262. Adjusting hole; 3. Tail wheel assembly. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] See Figure 1-6 This utility model provides a damping pulley device, including a damper 1 and a head wheel assembly 2 and a tail wheel assembly 3 respectively disposed at the head and tail ends of the damper 1. In use, when the damping pulley device is installed inside the guide rail, the head wheel assembly 2 and the tail wheel assembly 3 slide along the extension direction of the guide rail to realize the movement of the damping pulley device. The head wheel assembly 2 includes a fixed base 21, a base 22, and two hanging pulley groups 23. The fixed base 21 is disposed at the head of the damper 1; the base 22 is rotatably mounted on the fixed base 21; the two hanging pulley groups 23 are symmetrically arranged on both sides of the base 22 for sliding within the guide rail. Specifically, the fixed base 21 is provided with an elastic part 211, which abuts against the base 22 and drives the base 22 to rotate to one side, causing the hanging pulley groups 23 to tilt downwards and abut against the guide rail, and causing the damper 1 to rotate to the other side, causing the tail wheel assembly 3 to tilt downwards and abut against the guide rail.

[0024] Thus, when the damping pulley device is installed in the guide rail, under the action of the elastic part 211 of the fixed seat 21, the hanging pulley group 23 and the tail wheel assembly 3 both tilt and move downward and slide close to the bottom wall of the guide rail, thereby effectively preventing the door from jumping, thus extending the service life of the door and the door frame, and reducing noise.

[0025] In this embodiment of the utility model, the fixing base 21 is made of nylon material, and the elastic part 211 is a spring piece integrally formed on the fixing base 21.

[0026] Referring again to 2-3, the hanging bracket pulley assembly 23 includes a hanging bracket body 231 and two pulleys 232 arranged at intervals along the extension direction of the guide rail on the hanging bracket body 231. One end of the hanging bracket body 231 near the fixed base 21 abuts against the spring piece of the fixed base 21, and the two pulleys 232 are used to slide within the guide rail. The hanging bracket body 231 and the base 22 are detachably connected by a slotted block engaging structure. The slotted block engaging structure includes a positioning groove 221 formed on the base 22 and a positioning block 2311 arranged on the hanging bracket body 231 and slidingly engaging into the positioning groove 221. Both the positioning groove 221 and the positioning block 2311 extend along the extension direction of the guide rail.

[0027] Of course, in other embodiments, the positions of the positioning slot 221 and the positioning block 2311 can be interchanged to achieve the same technical effect, and this is not a limitation.

[0028] See also Figure 2-5 The bracket body 231 has a limiting block 2312 at the end away from the fixed base 21. When the positioning block 2311 slides into the positioning groove 221 until the limiting block 2312 abuts against the base 22, the bracket body 231 is limited. The base 22 is also provided with a locking assembly, which includes a threaded hole 222 on the base 22 and a locking bolt 24 screwed into the threaded hole 222. The bracket body 231 has a slot 2315. When the bracket body 231 is limited, the slot 2315 communicates with the threaded hole 222. By moving the locking bolt 24 until it is engaged in the slot 2315, the bracket body 231 can be clamped and fixed on the base 22.

[0029] Therefore, when it is necessary to install the head wheel assembly 2 into the guide rail, first install the fixing seat 21 onto the head of the damper 1 outside the guide rail, then rotate the base 22 onto the fixing seat 21, then install the damper 1 together with the fixing seat 21 and the base 22 into the guide rail, then put the two hanger pulley groups 23 into the guide rail and slide them along the extension direction of the guide rail until the two hanger bodies 231 are assembled with the base 22 through the slot block snap-fit ​​structure, and then use the locking bolts 24 to clamp and fix the hanger bodies 231 onto the base 22, thus completing the assembly.

[0030] Additionally, a brush assembly (not shown in the figure) is provided at the end of the bracket body 231 away from the fixing base 21. The brush assembly includes a mounting plate and a brush mounted on the mounting plate. A blind mounting hole 2313 is provided on the outer side of the bracket body 231, and an opening 2314 is provided through the side of the blind mounting hole 2313. The mounting plate is embedded in the blind mounting hole 2313, and the brush bristles are disposed through the opening 2314. A sealing block 233 is engaged at the open end of the blind mounting hole 2313.

[0031] Therefore, by setting up the brush assembly, the damping pulley device can clean the dust on the surface of the guide rail in real time during the sliding process in the guide rail, thereby ensuring the smooth cooperation between the pulley 232 and the guide rail.

[0032] See also Figure 4 The base 22 is also equipped with an adjustment assembly, which includes a lifting nut 25 and an adjusting pin 26. The lifting nut 25 has a first retaining tooth 251, and the adjusting pin 26 has a second retaining tooth 261 at one end near the lifting nut 25. The first retaining tooth 251 and the second retaining tooth 261 engage with each other. The lifting nut 25 is used for threaded connection with bolts on the door mounting box, and the adjusting pin 26 has an adjusting hole 262 at one end away from the lifting nut 25. Preferably, the adjusting hole 262 is a hexagonal slot.

[0033] Therefore, when it is necessary to adjust the height of the door leaf, an external tool can be inserted into the adjustment hole 262 to drive the adjustment nail 26 to rotate, and the first locking tooth 251 and the second locking tooth 261 will engage to drive the hanging nut 25 to rotate, thereby driving the bolt on the hanging box to move up and down, and finally realizing the adjustment of the door leaf height.

[0034] Therefore, by setting the adjustment component inside the base 22 of the head wheel assembly 2, the volume of the door panel hanging box can be reduced, which in turn reduces the volume of the door panel frame, saving materials and reducing costs.

[0035] In summary, the head wheel assembly and damping pulley device of this utility model have the following beneficial effects: (i) By providing an elastic part 211 on the fixed base 21, the elastic part 211 abuts against the base 22 and drives the base 22 to rotate to one side, causing the hanging pulley assembly 23 to tilt downward and abut against the guide rail, and causing the damper 1 to rotate to the other side, causing the tail of the damper 1 to tilt downward. Thus, when the damping pulley device is installed in the guide rail, the hanging pulley assembly 23 and the tail wheel assembly 3 provided at the tail of the damper 1 both tilt downward and slide close to the inner bottom wall of the guide rail, thereby effectively preventing the door from jumping, thus extending the service life of the door and door frame, and reducing noise.

[0036] (ii) By setting the adjustment component inside the base 22 of the head wheel assembly 2, the volume of the door panel hanging box can be reduced, and the volume of the door panel frame can be reduced, saving materials and reducing costs.

[0037] 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.

[0038] 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.

[0039] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0040] 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 head wheel assembly of a damping pulley device, characterized in that, include: A mounting base, which is configured on the damper head; The base is rotatably mounted on the fixed seat; Two hanging bracket pulley groups are symmetrically arranged and located on both sides of the base; the hanging bracket pulley groups are used to slide within the guide rail. The fixed base is provided with an elastic part, which abuts against the base and drives the base to rotate to one side so that the hanging pulley group tilts down and abuts against the guide rail, and causes the damper to rotate to the other side and the tail of the damper to tilt down.

2. The head wheel assembly according to claim 1, characterized in that, The base is made of nylon, and the elastic part is a spring piece integrally formed on the fixed base.

3. The head wheel assembly according to claim 1, characterized in that, The hanging bracket pulley assembly includes a hanging bracket body and two pulleys arranged on the hanging bracket body at intervals along the extension direction of the guide rail. The hanging bracket body is detachably connected to the base.

4. The head wheel assembly according to claim 3, characterized in that, The bracket body and the base are detachably connected via a slotted snap-fit ​​structure, wherein: The slotted block snapping structure includes a positioning slot and a positioning block that slides into the positioning slot. Both the positioning slot and the positioning block are arranged to extend along the extension direction of the guide rail. One of the positioning groove and the positioning block is disposed on the bracket body, and the other is disposed on the base.

5. The head wheel assembly according to claim 4, characterized in that, The end of the bracket body is provided with a limiting block. When the positioning block slides into the positioning groove until the limiting block abuts against the base, the bracket body is limited.

6. The head wheel assembly according to claim 5, characterized in that, The base is also provided with a locking assembly, which includes a threaded hole on the base and a locking bolt screwed into the threaded hole. The bracket body is provided with a slot for engaging with the locking bolt. When the bracket body is in a limited position, the slot communicates with the threaded hole.

7. The head wheel assembly according to claim 3, characterized in that, The end of the hanging bracket body is also provided with a bristle assembly, which includes a mounting plate and a brush disposed on the mounting plate, wherein: The outer side of the bracket body is provided with a blind mounting hole, and an opening is provided through the side of the blind mounting hole. The mounting plate is embedded in the blind mounting hole, and the brush bristles are provided through the opening. The opening end of the blind hole is fitted with a sealing block.

8. The head wheel assembly according to any one of claims 1-7, characterized in that, The base is also provided with an adjustment assembly, which includes a lifting nut and an adjustment pin for driving the lifting nut to rotate. The lifting nut is used to be threadedly connected to the bolt on the door hanging box, and the adjustment pin has an adjustment hole at one end away from the lifting nut.

9. The head wheel assembly according to claim 8, characterized in that, The hoisting nut is provided with a first retaining tooth, and the adjusting pin is provided with a second retaining tooth at one end near the hoisting nut. The first retaining tooth and the second retaining tooth engage with each other.

10. A damping pulley device, characterized in that, Includes a head wheel assembly, a damper, and a tail wheel assembly as described in any one of claims 1-9, wherein the head wheel assembly is disposed at the head of the damper and the tail wheel assembly is disposed at the tail of the damper; When the damping pulley device is installed inside the guide rail, the hanging pulley group and the tail wheel assembly in the head wheel assembly both tilt downwards and abut against the inner bottom wall of the guide rail.

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