Roller assembly for sliding door

Abstract

The utility model discloses a roller assembly for a sliding door, which comprises a top plate, a mounting plate and a plurality of roller groups, the mounting plate is rotatably mounted on the top plate through a first pin shaft, and a tension spring is arranged between the mounting plate and the top plate; a first roller group and a second roller group are mounted on the mounting plate, the first roller group comprises two vertically mounted first rollers, and the two first rollers are mounted on two sides of the mounting plate through first fixing pins; the second roller group comprises a horizontally arranged second roller and a second fixing pin, and the second roller is mounted on the mounting plate through the second fixing pin. The vertical first roller and the horizontal second roller are arranged on the mounting plate, and the outer diameter of the second roller is consistent with the width of the sliding chute of the door frame, so that the sliding door cannot shake in the sliding chute, the service life is long, and the sliding door is silent in the push-and-pull process.

Description

Technical Field

[0001] The utility model relates to a roller assembly, in particular to a roller assembly used for a sliding door. Background Art

[0002] At present, most furniture doors, bathroom doors, etc. adopt sliding door structures, and most sliding doors are opened by pushing and pulling. Generally, sliding doors slide with the track on the door frame through rollers. After long-term use, the rollers are easy to loosen, which may cause derailment and shaking during the sliding process. It will also cause the sliding door to make loud noises, shake, or even get stuck during the pushing and pulling process. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a roller assembly for a sliding door, which is not easy to derail, has a smoother sliding process, and has a good mute effect.

[0004] To this end, the technical solution of the utility model is: a roller assembly for a sliding door, comprising a top plate, a mounting plate and a plurality of roller groups, the mounting plate being rotatably mounted on the top plate via a first pin shaft, a tension spring being provided between the mounting plate and the top plate; a first roller group and a second roller group are mounted on the mounting plate, the first roller group comprising two vertically mounted first rollers, the two first rollers being mounted on both sides of the mounting plate via a first fixing pin; the second roller group comprising a horizontally arranged second roller and a second fixing pin, the second roller being mounted on the mounting plate via the second fixing pin.

[0005] On the basis of the above scheme and as a preferred scheme of the above scheme: two openings are provided at the bottom of the mounting plate, the second roller set is installed in the openings, and a blocking bar is fixed below the openings.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: four groups of first rollers are arranged on the mounting plate, two first rollers are flush, and the lowest point of the first rollers is lower than the bottom edge of the mounting plate.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the outer diameter of the second roller is ≥ the distance between the outer side surfaces of the two first rollers in the same group.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the first rollers on the first roller group are rotatably mounted on the first fixing pin through the first bearing, and the first fixing pin is fixed on the mounting plate.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the second roller on the second roller group is rotatably mounted on the second fixing pin through a second bearing, and the second fixing pin is fixed on the mounting plate.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: a first assembly surface is provided on the top plate, and an assembly hole is provided on the first assembly surface; two second assembly surfaces are provided below the top plate, and the top of the mounting plate is placed between the two second assembly surfaces and is rotatably connected by a first pin shaft.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: a vertical first roller and a horizontal second roller are arranged on the mounting plate, and the outer diameter of the second roller is consistent with the width of the door frame slide groove, so that the sliding door will not shake in the slide groove, and each group of first roller groups includes two first rollers, so that the roller assembly is subjected to balanced force in the slide groove and has a long service life. There is no need to set a slide rail that cooperates with a single roller in the slide groove, thereby solving the derailment problem of the sliding door from the source; silent bearings are arranged inside the first roller and the second roller, making the pushing and pulling process of the sliding door quieter. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural front view of the utility model;

[0014] Figure 3 It is an exploded view of the parts of the utility model;

[0015] Figure 4 This is a bottom view of the structure of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the first roller group of the utility model;

[0017] Figure 6 This is an exploded view of the parts of the first roller assembly of the utility model.

[0018] Marked in the figure are: top plate 1, first assembly surface 11, assembly hole 12, second assembly surface 13, first pin shaft 14, mounting plate 2, opening 21, baffle 22, tension spring 3, first roller group 5, first roller 51, first silent bearing 52, first fixing pin 53, second roller group 6, second roller 61, second fixing pin 62, second silent bearing 63. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0021] See the attached drawings. The roller assembly described in this embodiment is used to be installed under a sliding door. The roller assembly includes a top plate 1, a mounting plate 2 and a plurality of roller groups. The top plate 1 is provided with a first assembly surface 11, and the first assembly surface 11 is provided with an assembly hole 12; two second assembly surfaces 13 are provided below the top plate 1, and the top of the mounting plate 2 is placed between the two second assembly surfaces 13 and is rotatably connected via a first pin 14. The mounting plate 2 can rotate relative to the top plate 1, and the first roller is more flexible. When there are concave and convex parts in the groove of the door frame, the first roller can also pass over; a tension spring 3 is provided between the mounting plate 2 and the top plate 1, and the tension spring 3 can make part or all of the first rollers on the mounting plate 2 close to the door frame slide groove.

[0022] The mounting plate 2 is provided with a first roller group 5 and a second roller group 6. The mounting plate 2 is provided with four first roller groups 5. The first roller group 5 includes two vertically mounted flush first rollers 51. The first rollers 51 are rotatably mounted on a first fixing pin 53 through a first silent bearing 52. The first fixing pin 53 is fixed on the mounting plate 2. The two first rollers 51 are located on both sides of the mounting plate 2, and the lowest point of the first rollers 51 is lower than the bottom edge of the mounting plate 2.

[0023] The bottom of the mounting plate 2 is provided with two openings 21, the second roller set 6 is installed in the openings, and a stop bar 22 is fixed below the openings. The second roller set 6 includes a horizontally arranged second roller 61 and a second fixing pin 62, the second roller 61 is rotatably mounted on the second fixing pin 62 through a second silent bearing 63, and the second fixing pin 62 is fixedly mounted on the mounting plate 2. The outer diameter of the second roller 61 is ≥ the distance between the outer sides of the two first rollers 51 in the same group, and the outer diameter of the second roller 61 is consistent with the width of the door frame slide slot, so that the second roller can contact both sides of the door frame slide slot conveniently.

[0024] When in use, the top plate 1 is fixed to the bottom of the sliding door by screws, and then the roller assembly is placed in the slide groove below the door frame, so that the first roller 51 contacts the bottom of the slide groove, and the two sides of the second roller 61 contact the groove walls on both sides of the slide groove. The first roller and the second roller drive the sliding door to slide smoothly.

[0025] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A roller assembly for a sliding door, comprising a top plate, a mounting plate and a plurality of roller groups, characterized in that: The mounting plate is rotatably mounted on the top plate via a first pin shaft, and a tension spring is provided between the mounting plate and the top plate; a first roller group and a second roller group are mounted on the mounting plate, the first roller group includes two first rollers mounted vertically, and the two first rollers are mounted on both sides of the mounting plate via a first fixing pin; the second roller group includes a second roller and a second fixing pin arranged horizontally, and the second roller is mounted on the mounting plate via the second fixing pin.

2. A roller assembly for a sliding door according to claim 1, characterized in that: The bottom of the mounting plate is provided with two openings, the second roller set is installed in the openings, and a blocking bar is fixed below the openings.

3. A roller assembly for a sliding door according to claim 1, characterized in that: The mounting plate is provided with four first roller groups, two first rollers are flush with each other, and the lowest point of the first rollers is lower than the bottom edge of the mounting plate.

4. A roller assembly for a sliding door according to claim 1, characterized in that: The outer diameter of the second roller is greater than or equal to the distance between the outer sides of the two first rollers in the same group.

5. The roller assembly for a sliding door according to claim 1, characterized in that: The first rollers on the first roller group are all rotatably mounted on the first fixing pins through the first bearings, and the first fixing pins are fixed on the mounting plate.

6. The roller assembly for a sliding door according to claim 1, characterized in that: The second roller on the second roller group is rotatably mounted on a second fixing pin via a second bearing, and the second fixing pin is fixed on the mounting plate.

7. The roller assembly for a sliding door according to claim 1, characterized in that: The top plate is provided with a first assembly surface, and the first assembly surface is provided with an assembly hole; two second assembly surfaces are provided below the top plate, and the top of the mounting plate is placed between the two second assembly surfaces and is rotatably connected via a first pin shaft.

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