Fracture-Proof Flat Clasping Floorboard Strip and the Flooring Assembled with Such Strips
A flat installed anti cracking floor splice bar with buckle fixation, both the side of the long and short borders of the splice bar plate body (1) have splineway (11), and the other side of the splice bar has rabbet (12), therein, the upper slot surface of splineway (11) is paralleled to the upper surface of the rabbet (12) which are located in the same height. The V type groove (115) and protuberance (123) are mounted in the underside slot surface of splineway (11), furthermore, the front end of the protuberance (123) is inosculated with the outside of the splineway (11) so as to formed the anti self locking incline which is formed the first angle (α) with the upper surface of the splice bar, and the rear end of the protuberance (123) is inosculated with the outside of the V type slot (115) so as to formed the self locking incline which is formed the second angle (β) with the upper surface of the splice bar. The said splice bar can be jointed by putting the rabbet (12) of one splice bar into the splineway (11) of the other splice bar, so the flat installed anti cracking floor with buckle fixation is formed.
This invention involves a type of floorboard strips and the corresponding flooring especially the fracture-proof flat clasping floorboard strips and the flooring assembled with such strips.
BACKGROUNDExisting wood flooring types include solid wood flooring, solid wood composite flooring, reinforced composite flooring, and bamboo and wood composite flooring etc. Wood flooring has become one of the first choices among consumers because of its natural and elegant designs, easy maintenance and competitive prices. In the end of 1970s, the slot mortise direct locking flooring appeared and it no longer needed the previously complicated installation and leveling procedures. However, this kind of flooring also has its defects: air humidity changes will make the floor expand and shrink and lead to cracks at the board joints; adhesives must be applied to the board joints during installation and the use of adhesives will increase installation costs and cause air pollution; as the upper and lower surface sides of both slot mortise and tenon generally level with each other, the tenon tends to break at its root when the floor is not level enough and either side of the joint is under pressure. As shown in
Objective of the invention: Existing flooring techniques have the following defects—air humidity changes will make the floor expand and shrink and lead to cracks at the board joints; adhesives must be applied to the board joints during installation and the use of adhesives will increase installation costs and cause air pollution; as for U.S. Pat. No. 5,516,579, as the upper and lower surface sides of both slot mortise and tenon generally level with each other, the tenon tends to break at its root when the floor is not level enough and either side of the joint is under pressure. So the objective of this invention is to provide a type of fracture-proof flat clasping floorboard strips and the flooring assembled with such strips.
In order to achieve the above objective, this invention provides a type of fracture-proof flat clasping floorboard piece. The piece is in a long strip shape. Along the long side and the short side of such strip, there is slot mortise on one end and tenon on the other end. The slot mortise has a long side surface and a short side surface along its upper and lower sides. The upper surface of the slot mortise is parallel to and has the same height with the upper surface of the tenon. In the lower surface of the slot mortise there is a V-shaped groove while a convexity is arranged on the lower surface of the tenon. The convexity extends towards the insertion direction of the tenon and has an anti-self-locking oblique plane in its front end. The oblique plane forms Angle No.1 with the upper surface of the strip. The Angle varies between 15-35°. A corresponding oblique plane is arranged on the external surface of the long end of the slot mortise's lower side in order to fit the anti-self-locking oblique plane. The rear end of the convexity fits perfectly with the external side surface of the V-shaped groove and forms a self-locking plane, which forms Angle No. 2 with the upper surface of the strip. Angle No. 2 varies between 30-70°. The external shape of the tenon corresponds with that of the slot mortise.
Normally, the side wall of the long end of the slot mortise is 2-4 mm longer than that of its short end.
In order to achieve the above objective, this invention also provides the flooring assembled with the above-mentioned fracture-proof flat clasping floorboard strips. Such flooring includes a number of strips which are assembled together with the tenon in one strip inserted into the slot mortise in another and form the floor surface.
The merits of such flooring include: the floorboard strips have simple and beautiful structure and are easy to manufacture and install and can effectively prevent damages from happening during installation; no adhesive is needed to connect the strips during installation and the assembled flooring is safe and environment-friendly and has a long service life.
In the figures:
1. strip body, 11. slot mortise, 12. tenon, 100. tenon of existing types of flooring strips, 111. short end of the slot mortise, 112. long end of the slot mortise, 113. upper surface of the slot mortise, 114. lower surface of the slot mortise, 115. V-shaped groove, 116. oblique plane, 117. oblique plane on the external surface of V-shaped groove, 121. upper surface of the tenon, 122. lower surface of the tenon, 123. convexity in the lower surface of the tenon, 124. anti-self-locking oblique plane, 125. rear oblique plane of the convexity in the lower surface of the tenon, 200. slot mortise of existing types of flooring strips, 300. cushion block, 400. rubber hammer, α. Angle No. 1, β. Angle No. 2, P. upper surface of the strip
TECHNICAL DETAILSAs shown in
At the same time, slot mortise and tenon are also arranged in both ends along the short side of strip B. Their shapes and structures are identical to those along the long side.
As shown in
As shown in
Identical tenons and slot mortises are arranged on both long and short sides of strip B. So the structure offers many options for strip combination patterns. Strips can be joined between their long sides as well as between their short sides and between a long side and a short side so as to form different flooring patterns.
The flooring strips provided in this invention have simple structure and are easy to manufacture. The method of flat clasping is employed in the assembly process and the use of cushion blocks can effectively prevent damages from happening in installation. The arrangement of anti-self-locking and self-locking oblique planes gives a firm structure to the assembled flooring. No adhesive is needed to connect the strips during installation and the flooring is safe and environment-friendly. The installed flooring looks good and has a long service life and has overcome many defects of existing types of flooring.
Claims
1. It is a type of fracture-proof flat clasping floorboard strips. Along the long side of the board strip, there is slot mortise on one end and tenon on the other end. Along its short side, there is slot mortise on one end and tenon on the other end. The slot mortise has a short end in the upper side and a long end in its lower side. The upper surface of the slot mortise is parallel to and has the same height with the upper surface of the tenon. Its uniqueness lies in that in the lower surface of the slot mortise there is a V-shaped groove while a convexity is arranged on the lower surface of the tenon. The convexity extends towards the insertion direction of the tenon and has an anti-self-locking oblique plane in its front end. The oblique plane forms Angle No.1 with the upper surface of the strip. The Angle varies between 15-35°. A corresponding oblique plane is arranged on the external surface of the long end of the slot mortise's lower side in order to fit the anti-self-locking oblique plane. The rear end of the convexity fits perfectly with the external side surface of the V-shaped groove and forms a self-locking plane, which forms Angle No. 2 with the upper surface of the strip. Angle No. 2 varies between 30-70°. The external shape of the tenon corresponds with that of the slot mortise.
2. The fracture-proof flat clasping floorboard strip as described in claim 1 has a feature—the side wall of the long end of the slot mortise is 2-4 mm longer than that of its short end.
3. The flooring assembled with fracture-proof flat clasping floorboard strips as described in claims 1 and 2 includes a number of strips which are assembled together with the tenon in one strip inserted into the slot mortise in another and form the floor surface.
4. The fracture-proof flat clasping flooring as described in claim 5 features mutual joints between tenons and slot mortises along the long/short sides of different strips.
Type: Application
Filed: Jul 4, 2005
Publication Date: Oct 23, 2008
Inventor: Li Yadong (Jiangsu Province)
Application Number: 10/582,434