Anti-derailing structure

Abstract

The utility model belongs to the technical field of door structures, and particularly relates to an anti-derailing structure and an automatic door, the anti-derailing structure is arranged on the top side of a sliding door and comprises a mounting frame and a pulley assembly, one side of the mounting frame extends to form a transverse plate, the free end of the transverse plate extends downwards to form a side plate, the side plate and the side wall of the mounting frame form a limiting groove, and a guide rail is arranged on the bottom side of the mounting frame; the pulley assembly comprises a connecting base and two pulleys, the two pulleys are rotationally connected with the connecting base, the connecting base is provided with a clamping position and used for being connected with the translation door plate, the two pulleys are supported on the guide rail in a rolling mode, a limiting plate is arranged at the top of the connecting base, one end of the limiting plate extends into the limiting groove, and the limiting plate limits the maximum stroke of the pulleys deviating from the guide rail. When the pulley of the pulley assembly deviates from the guide rail by a certain angle, the side plate of the limiting groove abuts against the limiting plate, further the pulley assembly is prevented from continuously deviating, and the use safety is improved.

Description

Technical Field

[0001] This utility model belongs to the field of door structure technology, and in particular relates to an anti-derailment structure. Background Technology

[0002] A sliding door is an automatic door that opens and closes by moving back and forth. In the prior art, the door body and the guide rail are connected by a sliding assembly.

[0003] For example, Chinese patent document CN208578473U discloses a multifunctional sliding door, including columns, door frame columns, a fixed door, a movable door, a crossbeam, a unit cover, a belt drive mechanism, and a connection between the columns and the door frame columns. The door frame columns are connected to one side of the fixed door, and a movable door is provided on the other side of the fixed door. A door frame column is also provided on the other side of the movable door. The unit cover is fitted onto the upper part of the two door frame columns. The belt drive mechanism is located inside the unit cover, and the top of the movable door is connected to the belt drive mechanism through a connector. A U-shaped groove is fixedly connected to one side of the bottom of the fixed door. When the movable door moves towards the direction of the fixed door with the U-shaped groove at the bottom, the bottom of the movable door is located inside the U-shaped groove.

[0004] In the aforementioned patent document, a U-shaped groove is provided at the bottom of the movable door to limit its movement, but this cannot guarantee that the hanging wheel will not derail after the movable door is impacted. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-derailment structure to solve the problem that when existing sliding doors are impacted, the hanging wheels connected to the sliding door are prone to relative displacement with the guide rail, resulting in the hanging wheels derailing.

[0006] To achieve the above objectives, this utility model provides an anti-derailment structure, located on the top side of a sliding door, comprising a mounting frame and a pulley assembly. A horizontal plate extends from one side of the mounting frame, and a side plate extends downward from the free end of the horizontal plate. The side plate and the side wall of the mounting frame form a limiting groove. A guide rail is provided on the bottom side of the mounting frame. The pulley assembly includes a connecting seat and two pulleys, which are rotatably connected to the connecting seat. The connecting seat has a clamping position for connecting the sliding door panel. The two pulleys are rolled and supported on the guide rail. A limiting plate is provided at the top of the connecting seat, with one end of the limiting plate extending into the limiting groove. The limiting plate limits the maximum travel of the pulleys off the guide rail.

[0007] Furthermore, the limiting plate and the two side walls of the limiting groove are provided with gaps.

[0008] Furthermore, the guide rail and the limiting groove are not on the same vertical plane, so that the pulley assembly is located on the side of the limiting groove away from the mounting bracket.

[0009] Furthermore, a base plate extends from the bottom side of the mounting bracket, the width of the base plate being greater than the width of the horizontal plate, and the guide rail is located at the end of the base plate away from the mounting bracket.

[0010] Furthermore, the pulley is provided with an annular groove, the annular groove including a groove bottom and an annular sidewall; the groove bottom is an inner arc surface; the top surface of the guide rail is an outer arc surface, and the diameter of the circle containing the groove bottom is larger than the diameter of the circle containing the top surface of the guide rail.

[0011] Furthermore, a buffer is also provided at the bottom of the guide rail.

[0012] The above-mentioned one or more technical solutions in the anti-derailment structure provided by this utility model embodiment have at least the following technical effects:

[0013] Because the mounting bracket has a guide rail on its bottom side, the two pulleys of the pulley assembly are supported on the guide rail and rotatably connected to the connecting seat. The connecting seat has a clamping position for connecting the sliding door panel. When the sliding door panel is impacted, the pulley assembly is prone to derailment due to misalignment with the guide rail. A limiting groove is provided on the side wall of the mounting bracket, and a limiting plate is provided on the top of the connecting seat. One end of the limiting plate extends into the limiting groove. When the pulleys of the pulley assembly deviate from the guide rail by a certain angle, the side plate of the limiting groove abuts against the limiting plate, thereby limiting further deviation of the pulley assembly and improving safety during use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A perspective view of the anti-derailment structure provided in an embodiment of this utility model.

[0016] Figure 2 The anti-derailment structure provided in this embodiment of the utility model Figure 1 A magnified view of A in the middle.

[0017] Figure 3 A side view of the anti-derailment structure provided in an embodiment of this utility model.

[0018] Figure 4 The anti-derailment structure provided in this embodiment of the utility model Figure 3 A magnified view of B in the middle.

[0019] In the diagram, 100 is the mounting bracket, 110 is the horizontal plate, 111 is the side plate, 112 is the limiting groove, 120 is the guide rail, 121 is the buffer component, and 130 is the base plate.

[0020] 200. Pulley assembly; 210. Connecting seat; 211. Clamping position; 220. Pulley; 221. Annular groove; 222. Groove bottom; 223. Annular sidewall; 230. Limiting plate. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device 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] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] In one embodiment of the anti-derailment structure of this utility model, please refer to... Figures 1-4The anti-derailment structure, located on the top side of the sliding door, includes a mounting frame 100 and a pulley assembly 200. A horizontal plate 110 extends from one side of the mounting frame 100, and a side plate 111 extends downward from the free end of the horizontal plate 110. The side plate 111 and the side wall of the mounting frame 100 form a limiting groove 112. A guide rail 120 is provided on the bottom side of the mounting frame 100. The pulley assembly 200 includes a connecting seat 210 and two pulleys 220. The two pulleys 220 are rotatably connected to the connecting seat 210. The connecting seat 210 has a clamping position 211 for connecting the sliding door panel. The two pulleys 220 are rolled and supported on the guide rail 120. A limiting plate 230 is provided at the top of the connecting seat 210, with one end of the limiting plate 230 extending into the limiting groove 112. The limiting plate 230 limits the maximum travel of the pulleys 220 off the guide rail 120.

[0026] Specifically, since the mounting bracket 100 has a guide rail 120 on its bottom side, the two pulleys 220 of the pulley assembly 200 are rolled and supported on the guide rail 120 and rotatably connected to the connecting seat 210. The connecting seat 210 has a clamping position 211 for connecting the sliding door panel. When the sliding door panel is impacted, the pulley assembly 200 is prone to derailment due to displacement from the guide rail 120. Because the mounting bracket 100 has a limiting groove 112 on its side wall and the connecting seat 210 has a limiting plate 230 on its top, with one end of the limiting plate 230 extending into the limiting groove 112, when the pulleys 220 of the pulley assembly deviate from the guide rail 120 by a certain angle, the side plate of the limiting groove 112 abuts against the limiting plate 230, thereby limiting the pulley assembly 200 from further displacement and improving the safety of use.

[0027] Furthermore, gaps are provided between the limiting plate 230 and the side walls of the limiting groove 112. Specifically, the pulley assembly 200 clamps the sliding door panel and slides back and forth along the guide rail 120 to open and close. The gaps allow the pulley assembly to drive the limiting plate 230 to move normally, avoiding friction between the limiting plate 230 and the side walls of the limiting groove 112 when the pulley assembly 200 is running normally, which would increase the moving resistance and noise.

[0028] Furthermore, the guide rail 120 and the limiting groove 112 are not on the same vertical plane, so that the pulley assembly 200 is located on the side of the limiting groove 112 away from the mounting bracket 100. Specifically, because the pulley assembly 200 is located on the side of the limiting groove 112 away from the mounting bracket 100, the size of the pulley assembly 200 is not restricted, and interference with the mounting bracket 100 is avoided.

[0029] Furthermore, a base plate 130 extends from the bottom side of the mounting bracket 100. The width of the base plate 130 is greater than the width of the cross plate 110. A guide rail 120 is located at the end of the base plate 130 away from the mounting bracket 100. Specifically, the guide rail 120 is located on the base plate 130 and is located at the end of the pulley assembly 200 away from the mounting bracket 100. This reduces the contact friction between the pulley assembly 200 and the mounting bracket 100 when the pulley assembly 200 deviates from the guide rail 120, thereby reducing the risk of damage to the pulley assembly 200.

[0030] Furthermore, the pulley 220 is provided with an annular groove 221, which includes a groove bottom 222 and an annular sidewall 223. The groove bottom 222 is an inner arc surface, and the top surface of the guide rail 120 is an outer arc surface. The diameter of the circle containing the groove bottom 222 is larger than the diameter of the circle containing the top surface of the guide rail 220. Specifically, because the diameter of the circle containing the groove bottom 222 in the annular groove of the pulley is larger than the diameter of the circle containing the top surface of the guide rail 220, the contact area between the top surface of the guide rail 220 and the groove bottom 222 and the annular sidewall 223 is reduced, thereby reducing sliding friction and lowering noise.

[0031] Furthermore, a buffer 121 is provided at the bottom of the guide rail 120. Specifically, the buffer 121 buffers and dampens the guide rail 120, reducing the frictional loss of the roller 220 rolling support on the guide rail 120 on the bottom side of the mounting bracket 100, thereby reducing the sliding noise of the roller assembly 200.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-derailment structure, disposed on the top side of a sliding door, characterized in that: The device includes a mounting bracket and a pulley assembly. A horizontal plate extends from one side of the mounting bracket, and a side plate extends downward from the free end of the horizontal plate. The side plate and the side wall of the mounting bracket form a limiting groove. A guide rail is provided on the bottom side of the mounting bracket. The pulley assembly includes a connecting seat and two pulleys. The two pulleys are rotatably connected to the connecting seat. The connecting seat has a clamping position for connecting a sliding door panel. The two pulleys are rolled and supported on the guide rail. A limiting plate is provided at the top of the connecting seat, with one end of the limiting plate extending into the limiting groove. The limiting plate limits the maximum travel of the pulleys off the guide rail.

2. The anti-derailment structure according to claim 1, characterized in that: The limiting plate has gaps between its two side walls and the limiting groove.

3. The anti-derailment structure according to claim 1, characterized in that: The guide rail and the limiting groove are not on the same vertical plane, so that the pulley assembly is located on the side of the limiting groove away from the mounting bracket.

4. The anti-derailment structure according to claim 3, characterized in that: The mounting bracket has a base plate extending from its bottom side. The width of the base plate is greater than the width of the horizontal plate. The guide rail is located at the end of the base plate away from the mounting bracket.

5. The anti-derailment structure according to claim 1 or 2, characterized in that: The pulley is provided with an annular groove, which includes a groove bottom and an annular sidewall; the groove bottom is an inner arc surface; the top surface of the guide rail is an outer arc surface, and the diameter of the circle containing the groove bottom is larger than the diameter of the circle containing the top surface of the guide rail.

6. The anti-derailment structure according to claim 5, characterized in that: The bottom of the guide rail is also equipped with a buffer.

Images