Metal pressing strip for side edge closing of wood floor

Abstract

The utility model discloses a wood floor side edge closing metal depression bar, the section of which is divided into a T type and an L type, the upper half part of the depression bar covers a joint, the lower half part of the depression bar is embedded into a gap, a splayed thin steel sheet is fixed on the lower half part through a welding point, and the initial thickness of splayed edges of extending parts on two sides of the depression bar is greater than the width of the gap of the wood floor. During installation, the splayed thin steel sheets of the pressing strips are pressed downwards after the thickness of the splayed thin steel sheets is smaller than the width of gaps of the wood floors, and the whole edge-closed metal pressing strips are embedded into the gaps of the wood floors by pressing the pressing strips one by one in the length direction of the pressing strips. After being pressed in, the splayed thin steel sheets can be deformed due to self-elasticity recovery and abut against the side faces of the gaps of the wood floor, so that the self-locking effect of the metal pressing strip is achieved. The wood floor side edge closing device is convenient to install and operate, self-locking is achieved by fully utilizing elastic recovery deformation of the splayed thin steel sheets, and the wood floor side edge closing device is an efficient and economical wood floor side edge closing process.

Description

Technical Field

[0001] This utility model relates to the field of wood flooring installation technology, specifically to a side edge trim metal strip, including its structure and installation technology. Background Technology

[0002] In the field of wood flooring installation, the finishing of the gaps between floorboards is crucial to both aesthetics and practicality. Traditional metal edge trims for wood flooring are mostly fixed using adhesives, clips, or screws, which suffers from cumbersome installation procedures, the need for auxiliary tools for drilling and positioning, and irreversible damage to the flooring. Furthermore, the fixing structure is prone to loosening and falling off over long-term use, affecting the performance. Some trims rely on external force to maintain their fixation, lacking a reliable self-locking mechanism, resulting in low installation efficiency and high maintenance costs. In addition, existing trim designs struggle to accommodate different floorboard gaps, especially when dealing with gap changes caused by thermal expansion and contraction, leading to trim deformation or detachment. To address these issues, this invention provides an edge trim that is fixed by a self-locking elastic metal sheet, aiming to solve the technical problems of inconvenient installation, unstable fixing, and poor adaptability in existing technologies, achieving an efficient and convenient wood flooring edge finishing process. Utility Model Content

[0003] This utility model discloses a metal trim strip for the side edge of wood flooring, aiming to solve the problems of cumbersome installation and unstable fixation of traditional trim strips. The trim strip has two cross-sections, T-shaped and L-shaped, suitable for different floor joint scenarios. Its structure consists of two parts: the upper part covers the floor joint, providing an aesthetic concealing effect; the lower part is embedded in the floor gap and is fixed with a figure-eight shaped thin metal sheet by welding points. The initial thickness of the figure-eight edge of the steel sheet is greater than that of the floor gap, and the self-locking fixation is achieved by utilizing the elastic properties of metal.

[0004] During installation, the herringbone edges are temporarily compressed to a width smaller than the gap using a top-pressure sheet. Each strip is then pressed into the gap one by one along its length. Once fully embedded, the herringbone edges naturally expand due to elastic recovery, tightly abutting against the inner walls of the gap, forming a self-locking structure independent of external force. This design eliminates the need for adhesives, drilling, or screws, preventing damage to the floor, significantly simplifying the installation process, allowing for single-person operation, and greatly improving construction efficiency.

[0005] Compared with existing technologies, the core innovation of this utility model lies in utilizing the elastic deformation characteristics of the V-shaped thin steel sheet to achieve self-adaptive fixing. This not only adapts to the slight changes in gaps caused by the thermal expansion and contraction of the floor, but also ensures balanced force distribution throughout the strip through evenly distributed welding points, preventing localized loosening. Its efficient installation process and reliable self-locking performance effectively solve the technical problems of inconvenient installation and poor adaptability of traditional strips, providing an economical and practical solution for wood flooring edge finishing, and has broad market application prospects. Attached Figure Description

[0006] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figure 1 A three-dimensional perspective view of a T-shaped metal strip; Figure 2 This is a three-dimensional perspective view of an L-shaped metal pressure strip. The main components in the figure include: a T-shaped metal pressure strip (1), an L-shaped metal pressure strip (2), a figure-eight shaped thin metal sheet (3), a steel sheet fixing welding point (4), and a top pressure sheet (5).

[0007] Figure 1 The planar joint suitable for wood flooring is shown. Its cross-section is T-shaped. The upper part is a horizontal wing plate covering the wood flooring joint, and the lower part is a vertical embedded part set in the center. The embedded part is fixed by steel plates on both sides and the welding point (4) is symmetrically welded with a figure-eight metal thin steel sheet (3). The figure-eight sides are outwardly expanded. The initial unfolded thickness D1 is greater than the width of the wood flooring gap D0, forming the foundation of the elastic snap-fit ​​structure.

[0008] Figure 2 This is suitable for the joint between wood flooring and the wall. Its cross-section is a right-angled bend, with the horizontal wing covering the joint and the vertical wing fitting against the side of the wall and the floor. The inner side of the vertical part is also fixed with a figure-eight thin steel sheet (3) by welding point (4). The structural principle is the same as that of the T-shaped pressure strip.

[0009] The top-pressing sheet (5) in the figure is an auxiliary installation tool. Its cross-section is thin plate-shaped. One end can abut against the two ends of the figure-eight shaped thin steel sheet (3). By applying lateral pressure, the outwardly expanding figure-eight edge is temporarily compressed to thickness D2 (D2 < D0), which makes it easier for the pressure strip to be embedded in the gap. The welding points (4) are evenly distributed along the length of the pressure strip, and the spacing matches the operating size of the top-pressing sheet to ensure that it can be embedded segment by segment during installation.

[0010] The two attached diagrams clearly present the cross-sectional shape, elastic snap-fit ​​structure, and installation auxiliary components of the two types of molding strips, intuitively reflecting the self-locking principle of "compression-embedding-elastic recovery," and providing visual support for understanding the fit between the molding strip and the gap of the wood floor and the installation process. Detailed Implementation

[0011] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0012] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model. The utility model will now be described in detail with reference to the embodiments and accompanying drawings.

[0013] I. Selection and Pretreatment of Pressure Strips

[0014] Select the pressure strip according to the joint type: T-shaped pressure strip (1) is used for the joint between wooden floors, and L-shaped pressure strip (2) is used for the joint of the wall. Both are fixed in the embedded part by welding points (4) with an initial thickness D1 > gap width D0 of the thin steel sheet (3). The top pressure area is planned according to the welding point spacing (about 50cm).

[0015] II. Segmented top-pressure embedding

[0016] Pre-compression: Insert the top pressure sheet (5) into both sides of the figure-eight thin steel sheet (3) and compress the outer edge segment by segment until D2 < D0. The distance between adjacent weld points is the standard for each operation.

[0017] Embedding operation: Align the horizontal flange of the T-shaped strip with the joint and align the embedded part with the joint; for the L-shaped strip, attach the vertical flange to the wall and cover the joint with the horizontal flange. Push the thin sheet to press the compressed steel sheet into the gap, and tap lightly until the embedded part is completely in the gap and the flange is flush.

[0018] III. Self-locking Fixing and Adjustment

[0019] After the pressure strip is embedded, the V-shaped thin steel sheet elastically recovers, and the outwardly expanding edge presses tightly against the sidewall of the gap to achieve self-locking. Check the flatness of the flange, adjust any raised areas with a rubber mallet, and clean before completing the installation.

[0020] IV. Advantages of Dynamic Adaptation

[0021] When the wood floor expands and contracts due to heat, the V-shaped thin steel sheet automatically compensates for the changes in gaps through elastic deformation: when the gap is wide, the outward expansion angle decreases, and when the gap is narrow, the outward expansion angle increases, continuously pressing against the side wall and maintaining stability without maintenance.

[0022] This implementation method uses a standardized process of "selection-segmented compression-embedded springback" to achieve segmented construction by utilizing the spacing between weld points. It can be installed efficiently by a single person, combining convenience and structural adaptability. Example

[0023] In a 120㎡ three-bedroom, two-living-room home renovation project, the living room and bedrooms used laminate flooring throughout. Edge finishing was required at the junctions with the wood flooring in the kitchen and bathroom. This utility model of T-shaped and L-shaped metal strips was used for efficient installation. Before construction, the appropriate strips were precisely selected based on the joint type. Eight 2.5m long T-shaped strips were prepared for the flat joints between the wood flooring sections, and four 2m long L-shaped strips were prepared for the corner and edge joints. Auxiliary tools such as top-pressing sheets and rubber mallets were also provided. Actual measurements showed that the width of the flat joints was between 4-6mm, and the corner gaps were 5-7mm. The initial width of the 8-10mm V-shaped steel strips was confirmed to meet the design requirement of being wider than the gap width. The strips were then cut to the specific room dimensions, and both ends were chamfered to avoid sharp edges affecting safety.

[0024] In practical installation, taking the T-shaped trim strip as an example for treating the joints of the living room floor, the installer aligns the horizontal flange of the trim strip with the joint, applies pressure with a 50cm spacing between the welding points, and temporarily compresses the outward-flaring V-shaped edge to 5mm (less than the gap width) using lateral pressure. Then, a rubber mallet is gently tapped to help the trim strip embed into the gap. During the process, it is ensured that the horizontal flange is flush with the floor surface. The installation of a single 2.5m trim strip takes approximately 3 minutes, significantly improving efficiency. In the kitchen corner finishing scenario, the vertical flange of the L-shaped trim strip fits tightly against the wall, while the horizontal flange covers the joint between the floor and the wall. The installer uses the same pressure-compression process to compress the V-shaped edge of the vertical part, embedding the trim strip into the angled gap between the floor and the wall in sections. After completion, the vertical flange fits seamlessly against the wall, demonstrating excellent adaptability.

[0025] After all the molding strips are embedded, the V-shaped thin steel strips elastically rebound to press firmly against the sidewalls of the gaps, forming a self-locking structure. Visual inspection shows that the height difference between the molding strip flanges and the floor surface is controlled within 1mm, with no warping or loosening. Furthermore, no waiting for the adhesive to cure is required; the floor can be walked on and used normally on the day of installation, representing an efficiency improvement of over 60% compared to traditional adhesive bonding methods. A follow-up visit six months after occupancy revealed that even with seasonal temperature fluctuations causing the wood flooring to expand and contract, resulting in variations in gap width, the V-shaped thin steel strips of the molding strips automatically compensated for these changes through elastic deformation, maintaining a firm grip on the sidewalls of the gaps without loosening or detaching. The edge finishing effect remained consistently stable, fully demonstrating the high efficiency and environmental adaptability of this technology in real-world home decoration scenarios.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wood floor side closing metal strip, characterized by: The section of the strip includes two types of T and L, the upper half of the strip is used to cover the wood floor joint, and the lower half is used to embed the wood floor gap; the lower half of the strip is fixed with a metal sheet in the shape of a splayed eight through a welding point, two extended edges of the metal sheet in the shape of a splayed eight are symmetrically outwardly expanded, and the initial thickness of the splayed edges of the two side extended parts is greater than the width of the wood floor gap.

2. The wood floor side closing metal pressing strip according to claim 1, characterized in that: The metal sheet in the shape of a splayed eight has elastic recovery characteristics, when the splayed edges are pressed to a thickness less than the width of the wood floor gap and pressed into the gap through a pressing sheet, the splayed edges can be tightly abutted to the side of the wood floor gap through elastic recovery deformation, and self-locking fixation of the strip is realized.

3. The wood floor side closing metal pressing strip according to claim 1, characterized in that: The welding points of the metal sheet in the shape of a splayed eight and the lower half of the strip are uniformly distributed in the length direction of the strip at a certain interval, and the interval meets the installation process requirement of embedding the wood floor gap one by one in the length direction of the strip.

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