Lower rail of lifting sliding door

Abstract

The utility model relates to the technical field of lifting sliding doors, in particular to a lower rail of a lifting sliding door, which comprises a mounting surface, a lower rail is fixed on the mounting surface through a connecting layer, the lower rail is of an integrally formed sheet structure, at least two guide strips are arranged on the upper surface of the lower rail in an upward protruding manner, and the guide strips are arranged on the mounting surface. A first connecting face, a second connecting face and a plane portion are arranged on the lower surface from the middle to the two ends, an open ring is arranged between the second connecting face and the plane portion, the sheet-shaped lower rail replaces an existing lower rail profile, the sheet-shaped lower rail is directly fixed to a mounting face through the connecting layer, the height of the lower rail is effectively reduced, meanwhile, deformation of the lower rail can be prevented, and the service life of the lower rail is prolonged. And the lower rail is integrally formed, so that the structure is simple, and production and installation are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting and sliding doors, in particular to a lifting and sliding door lower rail. Background Art

[0002] A sliding door is a commonly used door in a household, referring to a door that can be pushed and pulled, while a lifting sliding door is improved on the basis of a sliding door, and can rise or fall. When closed, the weight of the door leaf is used to press the lower rail, so that the overall sealing is better. Referring to the lifting sliding door disclosed in Publication (Announcement) No.: CN218541994U, both sliding doors and lifting sliding doors require an outer frame, and a lower rail needs to be set at the bottom of the outer frame to support the door leaf and allow the door leaf to slide. The current lower rails are all assembled with profiles. After installation, the lower rail will be too protruding from the mounting surface, and the cavity is prone to sinking and deformation under the pressure of the door leaf for a long time. In order to keep the lower rail as flush as possible with the mounting surface, a groove matching the lower rail needs to be reserved on the mounting surface, and then the lower rail is placed and fixed. Moreover, the existing lower rails are all split structures, and notches need to be reserved on the profiles first. After molding, guide rails are inserted into the sockets to cooperate with the sliding of the door leaf pulleys, resulting in such a structure being too complicated and not conducive to production and installation. Utility Model Content

[0003] The utility model provides a lifting sliding door lower rail to reduce the bulge of the lower rail and prevent deformation, and at the same time simplifies the lower rail structure and facilitates production and installation.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting and sliding door lower rail, comprising a mounting surface, the mounting surface being fixed with the lower rail through a connecting layer, the lower rail being an integrally formed sheet structure, the upper surface of the lower rail being provided with at least two guide bars protruding upward, the lower surface being provided with a first connecting surface, a second connecting surface and a flat surface arranged from the middle to both ends, an open loop being provided between the second connecting surface and the flat surface.

[0005] Furthermore, the connecting layer includes a first waterproof layer and a concrete layer, and ends of the lower rail and the connecting layer are covered with a second waterproof layer.

[0006] Furthermore, both ends of the lower rail are respectively provided with decorative surfaces fixedly connected to the mounting surface.

[0007] Furthermore, a groove is provided between the first connecting surface and the second connecting surface, and the groove corresponds to the guide bar in the upper and lower parts.

[0008] Furthermore, the groove has a semicircular cross section.

[0009] Furthermore, the open loop has an opening, and the arc of the opening is less than 180 degrees, thereby forming an open loop with an arc greater than 180 degrees.

[0010] Furthermore, the first connecting surface is provided with a plurality of arc portions, a notch is recessed between two adjacent arc portions, and the second connecting surface is provided with a plurality of sharp teeth portions.

[0011] Compared with the prior art, the beneficial effects of the utility model are: the sheet-like lower rail is provided to replace the existing lower rail profile and is directly fixed to the installation surface through the connecting layer, thereby effectively reducing the height of the lower rail and preventing the lower rail from deforming. Moreover, the lower rail has a simple one-piece structure and is more conducive to production and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front angle stereogram of the lower rail of the utility model.

[0013] Figure 2 It is a three-dimensional view from the back side of the lower rail of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the lower rail in the utility model.

[0015] Figure 4 It is a schematic diagram of the connection between the lower rail and the mounting surface in the utility model.

[0016] Figure 5 It is a distribution diagram of the utility model.

[0017] Figure 6 It is a schematic diagram of the overall structure of the utility model.

[0018] In the figure: mounting surface 1, lower rail 2, guide bar 10, first connecting surface 20, second connecting surface 30, sharp tooth portion 31, plane portion 40, open loop 50, connecting layer 60, decorative surface 70, groove 100, arc portion 201, notch 202, first waterproof layer 601, concrete layer 602, second waterproof layer 707. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] As shown in the accompanying drawings, the utility model is a lifting and sliding door lower rail, including a mounting surface 1, the mounting surface 1 is fixed with a lower rail 2 through a connecting layer 60, the mounting surface 1 is actually a wall hole surface or a ground, the lower rail 2 is an integrally formed sheet structure, the upper surface of the lower rail 2 is provided with at least two guide bars 10 protruding upward, and the lower surface is provided with a first connecting surface 20, a second connecting surface 30 and a flat portion 40 arranged from the middle to both ends, an open loop 50 is provided between the second connecting surface 30 and the flat portion 40, and the open loop 50 can be used to connect the side profiles fixed by screws, such as the lower rail 2 is connected and fixed to the side profiles of the outer frame, and then the top profile is installed to form a complete outer frame, and cement slurry can also be stored through the open loop 50.

[0021] The utility model discloses a lifting sliding door lower rail, which replaces the existing lower rail profile by setting a sheet-shaped lower rail 2. Figure 6 It can be seen that the existing outer frame including the lower rail 1 are all profiles. The sheet-like one-piece lower rail 2 is directly fixed on the installation surface 1 through the connecting layer 60, which effectively reduces the height of the lower rail 2 and prevents the lower rail 2 from deforming. The heavier door leaf acts on the installation surface 1 through the lower rail 2. The top and both sides of the outer frame still use a profile structure, and the lower rail 2 is an one-piece structure with a simple structure, which is more conducive to production and installation.

[0022] In this embodiment, the connecting layer 60 includes a first waterproof layer 601 and a concrete layer 602, and the ends of the lower rail 2 and the connecting layer 60 are covered with a second waterproof layer 707. The first waterproof layer 601 and the second waterproof layer 707 can be provided with one layer or more, preferably two layers, and the concrete layer 602 is mainly used to fix the lower rail 2 and the installation surface 1; the two ends of the lower rail 2 are respectively provided with decorative surfaces 70 fixedly connected to the installation surface 1, and the decorative surface 70 is a decorative plane such as tiles, and is consistent with the ground where the lifting door is located. The decorative surface 70 can fill the two end positions of the protruding lower rail 2, and the second waterproof layer 707 is provided between the connecting layer 60 and the decorative surface 70. The junction between the lower rail 2 and the decorative surface 70 also requires a second waterproof layer 707 for waterproofing.

[0023] In this embodiment, a groove 100 is provided between the first connecting surface 20 and the second connecting surface 30. The groove 100 corresponds to the guide bar 10 up and down. The cross-section of the groove 100 is semicircular. The groove 100 is mainly used to enhance the rigidity and stability of the lower rail 2. At the same time, the groove 100 is arranged corresponding to the guide bar 10, which can provide good stability and support for the guide bar 10.

[0024] In this embodiment, the open loop 50 has an opening, and the curvature of the opening is less than 180 degrees, thereby forming an open loop 50 with a curvature greater than 180 degrees. By setting the open loop 50 with an opening, a circular closed loop is not directly adopted, mainly because it is more conducive to production needs. At the same time, the curvature of the open loop 50 is greater than 180 degrees, and the screw will not fall out of the opening after being driven into the open loop 50. In addition, the open loop 50 with an opening can also be used to store cement slurry. The cement slurry enters the interior of the open loop 50 through the opening, and will be fixed in the open loop 50 after being formed and solidified, thereby improving the connection stability between the lower rail 2 and the mounting surface 1.

[0025] In this embodiment, the first connecting surface 20 is arranged with a plurality of arc portions 201, and a recess 202 is recessed between two adjacent arc portions 201. The second connecting surface 30 is arranged with a plurality of sharp tooth portions 31, and the sharp tooth portions 31 are isosceles triangles, wherein the bottom end of one sharp tooth portion 31 is connected to the bottom end of the adjacent sharp tooth portion 31. The two connecting surfaces are more conducive to the storage of concrete, thereby improving the stability of the lower rail 2 and the mounting surface 1.

[0026] The above embodiments are preferred embodiments of the present utility model. All structures similar to the present utility model and equivalent changes made thereto should fall within the protection scope of the present utility model.

Claims

1. A lifting and sliding door lower rail, comprising a mounting surface, characterized in that: The mounting surface is fixed with a lower rail through a connecting layer. The lower rail is an integrally formed sheet structure. At least two guide bars are protruding upward from the upper surface of the lower rail. The lower surface is provided with a first connecting surface, a second connecting surface and a flat surface from the middle to both ends. An open loop is provided between the second connecting surface and the flat surface.

2. The lower rail of a lifting and sliding door according to claim 1, characterized in that: The connecting layer includes a first waterproof layer and a concrete layer, and ends of the lower rail and the connecting layer are both covered with a second waterproof layer.

3. The lower rail of a lifting and sliding door according to claim 1, characterized in that: Both ends of the lower rail are respectively provided with decorative surfaces fixedly connected to the mounting surface.

4. The lower rail of a lifting and sliding door according to claim 1, characterized in that: A groove is provided between the first connecting surface and the second connecting surface, and the groove corresponds to the guide bar up and down.

5. The lower rail of a lifting and sliding door according to claim 4, characterized in that: The groove has a semicircular cross section.

6. The lower rail of a lifting and sliding door according to claim 1, characterized in that: The open loop has an opening, and the arc of the opening is less than 180 degrees, thereby forming an open loop with an arc greater than 180 degrees.

7. The lower rail of a lifting and sliding door according to claim 1, characterized in that: The first connection surface is arranged with a plurality of arc portions, and a notch is recessed between two adjacent arc portions. The second connection surface is arranged with a plurality of sharp teeth portions.

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