A sliding door hanger wheel

Abstract

The utility model relates to a sliding door lifting wheel, including base body and setting wheel group on base body, be provided with through -hole on the base body, be provided with mounting piece in the through -hole, be provided with threaded hole in the mounting piece, the clearance fit between mounting piece outer wall and through -hole inboard wall, be provided with two place axial limit in the through -hole, the mounting piece is constrained in the through -hole activity by two place axial limit, be provided with the anti -rotation structure of constraint mounting piece around the circumferential rotation of body relative to the circumferential rotation of base body between the mounting piece and through -hole. Adopt above -mentioned technical scheme, the utility model through setting up an activity mounting piece in the through -hole of base body, setting threaded hole on the mounting piece, the clearance fit of axial limit setting in this through -hole and mounting piece and through -hole, realize that the mounting piece can be in the activity between axial limit and have a certain angle swing space, make when the track inclination is in the non -horizontal state, the mounting piece can occur adaptive deflection.

Description

Technical Field

[0001] This utility model belongs to the field of pulley technology, and in particular relates to a sliding door hanging wheel. Background Technology

[0002] Sliding door rollers are a key component in modern interior sliding door systems. Their main function is to support the weight of the door panel and allow it to slide smoothly on the track, thus enabling the opening and closing of the sliding door.

[0003] Traditional sliding door rollers typically consist of a base and a wheel assembly. The door panel and the base are connected by threads to fix the rollers to the top of the door panel, and then the wheel assembly is placed on the track to realize the function of the sliding door.

[0004] However, it is difficult to ensure that the track is installed on a horizontal plane. When the track is not horizontal, the base cannot be adjusted relative to the track, and the fixed connection between the base and the door panel will cause the door panel to tilt accordingly with the track. This may cause unnecessary friction or collision between the door panel and the door frame or adjacent door panels, affecting the smoothness of use, or even causing the sliding door to derail. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the prior art by providing a sliding door roller that solves the problem of door panel tilting when the track is not horizontal, while ensuring that the installation is firm and reliable.

[0006] The technical solution of this utility model is as follows: A sliding door hanging wheel includes a base and a wheel assembly disposed on the base. The base has a through hole, and a mounting component is disposed in the through hole. The mounting component has a threaded through hole. The outer wall of the mounting component is clearance-fitted with the inner wall of the through hole. Two axial limiting points are provided in the through hole, and the mounting component is constrained to move within the through hole by the two axial limiting points. An anti-rotation structure is provided between the mounting component and the through hole to constrain the mounting component to rotate around its own circumference relative to the circumference of the base.

[0007] By adopting the above technical solution, a movable mounting component is set in the through hole of the base body, and a threaded through hole is set on the mounting component. The axial limiting setting in the through hole and the clearance fit between the mounting component and the through hole enable the mounting component to move within the axial limiting range and have a certain angle of swing space. The mounting component can swing relative to the base body, so that when the track is tilted and not horizontal, the mounting component can undergo adaptive deflection, thereby allowing the base body and the door panel as a whole to adjust the angle. Ultimately, it ensures that the door panel can still maintain a horizontal state on the tilted track, while maintaining a reliable threaded connection between the mounting component and the door panel. Moreover, the anti-rotation structure effectively prevents the mounting component from rotating circumferentially during the bolt tightening process, ensuring that the bolt can be applied with sufficient preload, and achieving a firm and stable connection between the mounting component and the door body.

[0008] A further feature of this invention is that the anti-rotation structure consists of a first anti-rotation part and a second anti-rotation part that cooperate with each other; the first anti-rotation part includes a protrusion located on the outer surface of the mounting part or the inner wall of the through hole, and the second anti-rotation part includes a groove located on another component and arranged axially; the protrusion extends into and abuts against the groove.

[0009] With the above-described further configuration, the anti-rotation structure is formed by the engagement of a protrusion and a groove. The engagement of the protrusion and groove provides radial constraint, reliably transmitting the torque during bolt tightening and preventing slippage of the mounting component. At the same time, it does not hinder the necessary oscillation and floating of the mounting component in the axial direction, thus achieving a combination of anti-rotation and mobility functions. A further feature of this invention is that the axial limiting structure is a protruding structure on the inner wall of the through hole, the protruding structure being a limiting strip extending circumferentially from the inner wall of the through hole, and the inner diameter of the limiting strip being smaller than the maximum outer diameter of the mounting component.

[0010] With the above-mentioned further configuration, the limiting strip, as an internal protrusion structure, can reliably limit the mounting component within a predetermined stroke inside the through hole, preventing it from coming out of one end of the through hole.

[0011] A further feature of this invention is that the axial limiting is provided at one end of the through hole with a radially inwardly converging constriction structure, wherein the inner diameter of the inner edge of the constriction structure is smaller than the maximum outer diameter of the mounting component.

[0012] With the above-mentioned further design, the constriction structure can form a limit by local inner diameter shrinkage, and can be directly formed by stamping, forging or molding. The processing technology is simple, and it can effectively prevent the installation part from coming out of the port. At the same time, the guide slope formed at the constriction may be more conducive to the initial introduction and swing of the installation part.

[0013] A further improvement in this invention is that the two axial limiting points of the through hole are a limiting strip and a closing structure.

[0014] With the above-mentioned further design, this combined limiting method allows the installation component to be easily inserted from one end of the limiting strip, and then the final limiting is achieved by the closing structure, making the assembly process more reasonable and efficient.

[0015] A further feature of this invention is that the mounting component has a radially inwardly tapering opening at the port facing the tapering structure, and the outer side of the tapering opening of the mounting component is in clearance fit with the inner sidewall of the tapering structure.

[0016] With the above-mentioned further configuration, the outer side of the mounting component's opening fits into the inner wall of the base's opening structure, which can play a role in auxiliary guidance and radial support, making the mounting component more stable when swinging, reducing unnecessary shaking, and further improving the smoothness of the installation process and the structural stability of the connection.

[0017] A further feature of this invention is that the substrate includes two opposing substrates, each substrate including a bent portion and a straight portion, the straight portions of the two substrates being fitted and fixed together, and the two bent portions forming a through hole and a groove.

[0018] By adopting the above-mentioned further settings, the base is split into two relatively simple symmetrical or nearly symmetrical parts, which greatly reduces the molding difficulty of the parts and improves production efficiency and material utilization.

[0019] A further feature of this invention is that the cross-sectional shape of the bent portion can be arc-shaped, rectangular, or a combination thereof.

[0020] By adopting the above-mentioned further design, the structure of through holes can be flexibly designed. The arc-shaped cross-section is conducive to stress distribution, while the rectangular cross-section is easy to process and provides a larger contact surface. The appropriate cross-sectional shape can be selected according to the product strength and space.

[0021] A further feature of this invention is that the substrate has a notch, which includes a guide surface for engaging or disengaging with an external elastic hook.

[0022] With the above-mentioned further configuration, when the wheel assembly moves on the track, the notch cooperates with the elastic hook fixed to the guide rail or other positions and is locked in the notch. Without the action of external force, the movement of the wheel assembly is restricted. When the gantry is driven by external force, the elastic hook can slide along the guide surface and disengage from the notch, and then the wheel assembly can continue to move along the track. The notch profile can preferably be a triangular or trapezoidal structure.

[0023] A further feature of this invention is that the notch is provided on the top end face of the substrate, and there are two notches, which are provided on both sides of the through hole. A chamfer is provided between the end face of the substrate with the notch and the end face of the substrate on the side of the substrate that is farther away from the through hole than the notch.

[0024] With the above-mentioned further design, the notches are symmetrically arranged on both sides of the through hole, so that no matter whether the wheel group moves forward or backward, there is a notch that can engage with the elastic hook. This allows the sliding door to be stably stopped at multiple designated positions on the track. At the same time, with the chamfer setting, when the hanging wheel moves to the vicinity of the hook, even if the position is not completely aligned, the bevel of the chamfer will first contact the hook to guide it into the notch. At the same time, the chamfer can eliminate sharp edges. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model; Figure 2 This is a schematic diagram of the overall structure from a second perspective of a specific embodiment of the present utility model; Figure 3 This is a schematic diagram of the overall structure from a third-person perspective of a specific embodiment of the present utility model; Figure 4 This is a schematic diagram of the overall structure of the mounting component in a specific embodiment of this utility model.

[0026] In the diagram: 1. Base; 11. Substrate; 111. Bending section; 112. Straight section; 2. Wheel assembly; 3. Through hole; 4. Mounting component; 41. Threaded through hole; 5. Protrusion; 6. Groove; 7. Limiting strip; 8. Closing structure; 9. Notch; 91. Guide surface; 10. Chamfer. Detailed Implementation

[0027] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] like Figure 1-4 As shown, a sliding door roller includes a base 1 and a wheel assembly 2 disposed on the base 1. The base 1 is provided with a through hole 3. In this embodiment, the base 1 adopts a split splicing structure. Specifically, the base 1 includes two opposing and mirror-symmetrical base plates 11. Each base plate 11 is integrally formed by stamping and bending a metal plate. Each base plate 11 includes a bent portion 111 and straight plate portions 112 on both sides of the bent portion 111. The straight plate portions 112 of the two base plates 11 are attached to each other and fixedly connected by welding, riveting or bolts, thereby forming an integral and stable base 1. The bent portions 111 of the two base plates 11 are arranged opposite each other and together form an approximately cylindrical through hole 3. At the same time, a gap extending axially is naturally formed at the joint edge of the two bent portions 111.

[0030] Furthermore, two notches 9 are provided on the top end face of the base 1. The two notches are symmetrically arranged on both sides of the through hole. The notch 9 includes a guide surface 91 for engaging or disengaging with an external elastic hook. The outline of the notch 9 can preferably be a triangular or trapezoidal structure. When the wheel assembly moves on the track, the notch 9 engages with the elastic hook fixed to the guide rail or other positions, locking into the notch 9. Without external force, the movement of the wheel assembly is restricted. When the wheel is driven by an external force, the elastic hook can slide along the guide surface 91 and disengage from the notch 9, allowing the wheel assembly to continue moving along the track. At the same time, a chamfer 10 is provided between the end face of the base 1 with the notch 9 and the end face of the base 1 on the side farther from the through hole 3 than the notch 9. When the wheel moves near the hook, even if the position is not perfectly aligned, the chamfer 10 will first contact the hook to guide it into the notch 9. At the same time, the chamfer 10 can eliminate the sharp edge of the base 1.

[0031] The wheel set 2 is rotatably mounted on the straight plate portion 112 of the base 1 via a wheel axle. This is a conventional design and will not be described in detail here.

[0032] A mounting component 4 is provided in the through hole 3, and two axial limiting points are provided in the through hole 3. The mounting component is constrained to move within the through hole by the two axial limiting points. In this embodiment, the two axial limiting points adopt a combined form: the first is a circumferentially extending annular protrusion formed on the inner sidewall of the through hole 3, namely the limiting strip 7, which can be formed by stamping the outer end of the substrate 11; the second is a radially inwardly converging closing structure 8 formed at one end of the through hole 3. The inner diameter of the limiting strip 7 and the innermost inner diameter of the closing structure 8 are both smaller than the maximum outer diameter of the mounting component 4 described below.

[0033] The mounting component 4 is an independent metal part. There is a certain gap between its outer wall and the inner wall of the through hole 3 to form a clearance fit. The center of the mounting component 4 is provided with a through threaded through hole 41. The mounting component 4 is assembled in the through hole 3. Its axial position is restricted between the limiting strip 7 and the closing structure 8. Due to the existence of the gap, the mounting component 4 can not only move slightly within this axial range, but more importantly, it can produce a certain angle of tilting and swinging.

[0034] An anti-rotation structure is provided between the mounting component 4 and the through hole 3 to constrain the mounting component 4 from rotating around its own circumference relative to the base 1, so as to prevent the mounting component 4 from rotating when the bolt is screwed in.

[0035] In this embodiment, the anti-rotation structure consists of a first anti-rotation part and a second anti-rotation part that cooperate with each other; the first anti-rotation part includes a protrusion 5 located on the outer surface of the mounting part 4 or the inner wall of the through hole 3, and the second anti-rotation part includes a groove 6 located on another component and arranged axially; the protrusion 5 extends into and abuts against the groove 6.

[0036] Specifically, on the outer surface of the mounting component 4, a radially protruding protrusion 5 is provided as a first anti-rotation part. A groove 6 is provided on the inner wall of the through hole 3 along the axial length. In this embodiment, the edge where the two bent parts 111 meet naturally forms a gap extending along the axial direction, which is the groove 6. During assembly, the protrusion 5 is embedded and abuts against the inner wall of the groove 6 formed by the meeting of the two bent parts 111, so that the groove 6 constrains the protrusion 5 in the circumferential direction, thereby preventing the mounting component 4 from rotating around its own axis; however, in the axial direction, the groove 6 is elongated and does not prevent the protrusion 5 from moving axially or swinging with the mounting component 4.

[0037] Furthermore, the mounting component 4 also has a radially inwardly tapering end facing the tapering structure 8. The outer side of the tapering end is in a clearance fit with the inner sidewall of the tapering structure 8 on the base 1, so that when the mounting component 4 swings, the outer side of its tapering end can maintain contact with or slide with a small gap with the inner sidewall of the tapering structure 8, providing additional radial auxiliary support, making the swinging process more stable, reducing unnecessary shaking noise, and also making the bolt insertion more guided.

[0038] In summary, the mounting component 4 of this embodiment is designed to swing relative to the base 1, so that when the track is tilted in the vertical plane, the mounting component 4 can adaptively deflect, thereby allowing the base 1 and the entire door panel to adjust their angle. This ensures that the door panel remains vertical on the tilted track, while maintaining a reliable threaded connection between the mounting component and the door panel. During the entire tightening process, the anti-rotation structure effectively prevents the mounting component 4 from rotating with the bolt, ensuring that the bolt can be continuously tightened until the base 1 is firmly fixed to the door and obtains sufficient preload.

[0039] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A sliding door roller, comprising a base (1) and a wheel assembly (2) disposed on the base (1), wherein the base (1) is provided with a through hole (3), characterized in that: An installation component (4) is provided in the through hole (3). A threaded through hole (41) is provided on the installation component (4). The outer wall of the installation component (4) is clearance-fitted with the inner wall of the through hole (3). Two axial limiting points are provided in the through hole (3). The installation component (4) is restricted to move in the through hole (3) by the two axial limiting points. An anti-rotation structure is provided between the installation component (4) and the through hole (3) to constrain the installation component (4) from rotating circumferentially relative to the base (1).

2. The sliding door roller according to claim 1, characterized in that: The anti-rotation structure consists of a first anti-rotation part and a second anti-rotation part that cooperate with each other. The first anti-rotation part includes a protrusion (5) located on the outer surface of the mounting part (4) or the inner wall of the through hole (3). The second anti-rotation part includes a groove (6) located on another part and arranged axially. The protrusion (5) extends into and abuts against the groove (6).

3. A sliding door roller according to claim 1, characterized in that: The axial limiting is a protruding structure on the inner wall of the through hole (3), the protruding structure is a limiting strip (7) extending circumferentially on the inner wall of the through hole (3), and the inner diameter of the limiting strip (7) is smaller than the maximum outer diameter of the mounting part (4).

4. A sliding door roller according to claim 3, characterized in that: The axial limiting is provided at one end of the through hole (3) with a radially inwardly converging constriction structure (8), the inner diameter of the inner edge of the constriction structure (8) is smaller than the maximum outer diameter of the mounting part (4).

5. A sliding door roller according to claim 4, characterized in that: The two axial limiting points of the through hole (3) are the limiting strip (7) and the closing structure (8).

6. A sliding door roller according to claim 4, characterized in that: The mounting component (4) has a radially inwardly tapering opening at the port facing the tapering structure (8), and the outer side of the tapering opening of the mounting component (4) is in clearance fit with the inner sidewall of the tapering structure (8).

7. A sliding door roller according to claim 2, characterized in that: The substrate (1) includes two opposing substrates (11), each substrate (11) including a bent portion (111) and a straight portion (112). The straight portions (112) of the two substrates (11) are attached and fixed, and the two bent portions (111) form a through hole (3) and a groove (6).

8. A sliding door roller according to claim 7, characterized in that: The cross-sectional shape of the bent portion (111) can be arc-shaped, rectangular, or a combination thereof.

9. A sliding door roller according to claim 1, characterized in that: The substrate (1) has a notch (9) and the notch (9) includes a guide surface (91) for engaging or disengaging with an external elastic hook.

10. A sliding door roller according to claim 9, characterized in that: The notch (9) is provided on the top end face of the substrate (1). There are two notches (9). The two notches (9) are provided on both sides of the through hole (3). A chamfer (10) is provided between the end face of the substrate (1) where the notch (9) is opened and the end face of the substrate (1) on the side further away from the through hole (3) than the notch (9).

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