CN112012428A - A plastic floor provided with a mechanical locking system - Google Patents

Abstract

The invention relates to a plastic floor provided with a mechanical locking system which can be locked by horizontal snapping, which has a low snapping resistance and which can achieve a relatively high locking strength. Compared with the prior art, the plastic floor is provided with a mechanical locking system with a pull-proof function, the locking function is reliable, the vertical and horizontal locking is firm, and the two locked plastic floors can be prevented from moving when the shape of the surface of the plastic floor is changed.

Description

A plastic floor provided with a mechanical locking system

technical field

The present invention relates to the technical field of plastic flooring. More particularly, the present invention relates to mechanically engageable plastic floors provided with a mechanical locking system with a pull-proof function.

Background technique

The invention is particularly suitable for laminated plastic floors, with which the locking system is integral. Accordingly, the following description of the prior art, problems of known systems, and objects and features of the present invention will be directed primarily to this field of application and by way of non-limiting example. However, it should be emphasized that the present invention can be used with any floorboards that are joined into different patterns by means of a mechanical locking system. Thus, the present invention can also be used for floors that are glued or nailed to subfloors, or floors that have a core and have a surface made of plastic, linoleum, cork, painted fiberboard surfaces, and the like.

Traditional vinyl floors are usually installed to float over an existing subfloor. The joining edges of the vinyl floor are joined to form a floor surface, and the entire vinyl floor surface is movable relative to the sub-floor. The shape of the joined vinyl floor surfaces changes as the plastic floor panels shrink or expand due to the relative humidity RH that varies with the year. If the plastic floor is bonded with an adhesive, the change in the shape of the surface of the plastic floor can cause the adhesive to crack. Floorboards have been developed in recent years that do not require the use of adhesives and are mechanically joined using mechanical locking systems that include locking devices that mechanically lock the vinyl floor horizontally and vertically without the use of adhesives. Vinyl floors provided with locking devices can be mechanically engaged by various combinations of rotation, snap-in, vertical stacking and insertion along the engaging edge. However, none of the existing mechanical locking systems are provided with an anti-pull function, and the change of the shape of the surface of the vinyl floor will lead to the loosening of the mechanical joint.

Definition of Terms

In the following, the visible surface of the vinyl floor is referred to as the "front side", while the opposite side of the vinyl floor facing the sub-floor is referred to as the "rear side". The edge between the front and rear sides is called the "joint edge". "Horizontal or principal plane" means a plane extending parallel to the exterior of the skin. "Horizontally" means parallel to a horizontal plane, and "vertically" means parallel to a vertical plane. "Locking system" refers to a cooperating connecting device that connects the floor panels vertically and/or horizontally. "Mechanical locking system" refers to a system that enables engagement without the use of adhesives. In many cases the mechanical locking system can also be joined using adhesive.

SUMMARY OF THE INVENTION

The present invention provides a plastic floor provided with a mechanical locking system, which can be locked by horizontal clipping, has low clipping resistance and can achieve a relatively high locking strength. Compared with the known technology, the mechanical locking system provided by the plastic floor has an anti-pull function, the locking function is reliable, the vertical and horizontal locking are firm, and the two locked plastic floors can be prevented from moving when the shape of the surface of the plastic floor is changed. .

The plastic floor provided with the mechanical locking system provided by the present invention does not require the use of tools when connecting, or when using tools such as hammer blocks and hammers, the striking force required is small, so that in conventional installations, the edge is not damaged. cause damage. The mechanical locking system locks the floor panels vertically with high precision, so that the floor surfaces are substantially in the same plane.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a plastic floor provided with a mechanical locking system, the mechanical locking system includes a snap portion and a snap fit portion, and two opposite ends of the plastic floor are respectively provided with a plastic floor integrated with the plastic floor. The engaging part and the engaging part, the engaging part of the plastic floor is engaged with the engaging part of another plastic floor, so as to mechanically lock the adjacent edges together to form a mechanical connection between the panels.

The plastic floor is a laminated floor, at least including three layers of laminated layers, and the clamping part and the clamping and matching part are made of intermediate layer materials. A raised tongue is arranged in the middle of the engaging part, a raised locking part is arranged on the side of the tongue close to the rear side, the connection surface between the tongue and the front side constitutes a first step surface, and the connection surface between the tongue and the rear side constitutes a The second step surface, the distance between the second step surface and the tongue portion is greater than the distance between the first step surface and the tongue portion. A concave tenon groove is arranged in the middle of the snap-fit portion, and a concave locking groove is arranged on the side of the tenon groove close to the rear side, the opening of the locking groove is directed to the front side, and the locking member is directed to the back side. The connection surface between the tongue groove and the front side forms the third step surface, the connection surface between the tongue groove and the rear side forms the fourth step surface, and the distance between the third step surface and the bottom end of the tongue groove is smaller than the distance between the fourth step surface and the bottom end of the tongue groove. The locking part and the locking groove are all "ν" or "U"-shaped structures. The locking part points to the second step surface, and the bottom of the locking groove points to the fourth step surface. The mechanical connection formed by the tongue and groove will make the locking part, locking The grooves are mechanically connected, which horizontally locks the two vinyl floors to each other in a direction parallel to the main plane and perpendicular to the joint edge. The mechanically connected locking parts and locking grooves will limit the relative movement of the two mutually locked plastic floors in the horizontal plane.

Further, the connection between the front side and the first stepped surface and the third stepped surface constitutes a chamfered structure, and the connection between the rear side and the second stepped surface and the fourth stepped surface constitutes a chamfered structure.

Further, the connection between the third stepped surface and one side of the tongue groove forms a chamfered structure, and the connection between the fourth stepped surface and the other side of the tongue groove forms a circular arc chamfered structure.

Further, the length of the side edge of the locking part close to the tongue part is longer than the other side edge, the angle between the side edge of the locking part close to the tongue part and the horizontal plane is smaller than the angle between the other side edge and the horizontal surface; the locking groove is close to the bottom of the tenon groove The length of the side of the end is greater than that of the other side, and the angle between the side of the locking groove close to the bottom end of the tongue groove and the horizontal plane is smaller than the angle between the other side and the horizontal plane.

Further, the locking member slides into the locking groove along the arc chamfer with the movement of the tongue inserted into the groove. The first step surface and the third step surface of the two mutually locked plastic floors are in contact to form an inverted V-shaped structure. There is a gap between the step surface and the fourth step surface, and there is a gap between the tongue part and the bottom end of the tongue groove. The setting of the gap can leave redundancy for the expansion that may occur in the later stage of the plastic floor.

Further, the middle layer of the vinyl floor is made of polymer material.

Preferably, the polymeric material is a thermoplastic material.

The invention is also suitable for application to floor panels which are difficult to snap on, eg because the core layer is not soft or strong enough to form a strong snap-on locking system.

When the two plastic floors are mechanically joined, one is placed on a horizontal plane, and the other is placed at an angle with the horizontal plane and the tongue is inserted into the tongue and groove until the locking part slides against the arc chamfer to the opening of the locking groove. Press down to the horizontal plane, at this time, the locking part is snapped into the locking groove to complete the mechanical combination, and the mechanical joint is parallel to the main plane and perpendicular to the joint edge to lock the two plastic floors horizontally to each other. When separating, only one plastic floor can be lifted at a certain angle relative to another plastic floor to complete the mechanical separation.

As another structure of the plastic floor provided by the present invention, the plastic floor is a laminated floor, at least including three layers of laminated layers, and the engaging part and the engaging part are made of intermediate layer materials. The middle part of the engaging part is provided with a raised tongue, and the middle part of the engaging part is provided with a concave tongue groove. The connecting surface between the tongue and the front side constitutes a first stepped surface, the connecting surface between the tongue and the rear side constitutes a second stepped surface, and a concave locking groove is arranged between the second stepped surface and the tongue. The connecting surface between the tongue groove and the front side constitutes a third stepped surface, the connecting surface between the tongue groove and the rear side constitutes a fourth stepped surface, and a convex locking member is arranged between the fourth stepped surface and the tongue groove.

According to the present invention, for two mechanically joined plastic floors, the side edge of the locking member close to the second step surface and the side edge of the locking groove close to the fourth step surface form a locking surface, and the locking surface forms a strong locking force. This pointed locking member enables a high locking strength to be obtained even with a small locking surface.

Description of drawings

The accompanying drawings further illustrate the present invention, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

FIG. 1 is a schematic structural diagram of a plastic floor provided in Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of mechanical joining of two plastic floors provided in Embodiment 1 of the present invention.

FIG. 3 is a schematic structural diagram of mechanical joining of two plastic floors provided in Embodiment 2 of the present invention.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Example 1

As shown in Figure 1, a plastic floor is provided with a mechanical locking system. The mechanical locking system includes a snap-fit portion a and a snap-fit portion b. Two opposite ends of the plastic floor are respectively provided with snap-fit portions integrally formed with the plastic floor. a and the snap-fit part b, the plastic floor is a press-fit floor, including three layers of laminated layers, the snap-fit part a and the snap-fit part b are made of intermediate layer material, and the intermediate layer material is rigid polyvinyl chloride.

The engaging part a is a convex structure, the middle part of the engaging part a is provided with a raised tongue 3, and the side of the tongue 3 close to the rear side 2 is provided with a raised locking part 31, the connection between the tongue 3 and the front side 1 The surface constitutes a first stepped surface 5, the connecting surface of the tongue 3 and the rear side 2 constitutes a second stepped surface 6, and the distance between the second stepped surface 6 and the tongue portion is greater than the distance between the first stepped surface 5 and the tongue portion. A concave tongue groove 4 is arranged in the middle of the snap-fit part b, and a concave locking groove 41 is arranged on the side of the tongue groove 4 close to the rear side 2 . The surface constitutes the third stepped surface 7, the connecting surface between the tongue groove 4 and the rear side 2 constitutes the fourth stepped surface 8, and the distance between the third stepped surface 7 and the bottom end of the tongue groove 4 is smaller than the distance between the fourth stepped surface 8 and the bottom end of the tongue groove 4. .

The locking member 31 and the locking groove 41 are both of a "ν" type structure, the locking member 31 is directed to the second stepped surface 6 , and the locking groove 41 is directed to the fourth stepped surface 8 . The length of the side of the locking part 31 close to the head of the tongue 3 is greater than the other side, and the angle between the side of the locking part 31 close to the head of the tongue 3 and the horizontal plane is smaller than the angle between the other side and the horizontal plane. The length of the side of the locking groove 41 near the bottom end of the tongue groove 4 is greater than that of the other side, and the angle between the side of the locking groove 41 near the bottom end of the tongue groove 4 and the horizontal plane is smaller than the angle between the other side and the horizontal plane.

The connection between the front side 1 and the first stepped surface 5 and the third stepped surface 7 forms a chamfered structure, and the connection between the rear side 2 and the second stepped surface 6 and the fourth stepped surface 8 forms a chamfered structure. The connection between the third stepped surface 7 and one side of the tongue groove 4 forms a chamfered structure, and the connection between the fourth stepped surface 8 and the other side of the tongue groove 4 forms a circular arc chamfer 42 structure.

As shown in FIG. 2 , the engaging part a of the plastic floor is engaged with the engaging part b of another plastic floor, thereby mechanically locking the adjacent edges together to form a mechanical connection between the panels. The mechanical connection formed by the tongue 3 and the tongue groove 4 will make the locking part 31 and the locking groove 41 mechanically connected. The locking member 31 and the locking groove 41 can limit the relative movement of the two mutually locked plastic floors in the horizontal plane.

When the two pieces of plastic floor are mechanically combined, the tongue groove 4 is kept horizontal, the tongue 3 is lifted and pushed into the tongue groove 4 at a certain angle with the horizontal plane, and the locking part 31 is moved along the arc along the arc when the tongue 3 is inserted into the tongue groove 4. The corners 42 are slidably snapped into the locking grooves 41 . The first step surface 5 and the third step surface 7 of the two mutually locked plastic floors are in contact to form an inverted V-shaped structure. There is a gap between the second step surface 6 and the fourth step surface 8. The head of the tongue 3 and the bottom of the tongue groove 4 There is a gap at the end.

Example 2

As shown in Figure 3, the two vinyl floors are mechanically joined by a mechanical locking system. The mechanical connection formed by the tongue 3 and the tongue groove 4 will make the locking part 31 and the locking groove 41 mechanically connected. The locking member 31 and the locking groove 41 can limit the relative movement of the two mutually locked plastic floors in the horizontal plane.

When the two plastic floors are mechanically combined, the connecting end provided with the tongue 3 is kept horizontal, and the other end provided with the tongue groove 4 is lifted up and pushed in at a certain angle with the horizontal plane. When the tongue groove 4 wraps the tongue 3, press down. When the two plastic floors are level, the locking member 31 is slid and snapped into the locking groove 41 along the arc chamfer 42 to complete the engagement and locking.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims (10)

1. A plastic floor provided with a mechanical locking system, the mechanical locking system comprising a snap portion and a snap fit portion, and two opposite ends of the plastic floor are respectively provided with a snap portion and a snap fit integral with the plastic floor. A snap-fit portion, the snap-fit portion of the plastic floor is engaged with the snap-fit portion of another plastic floor, so as to mechanically lock the adjacent edges together to form a mechanical mechanism between the panels connection, characterized by: The plastic floor is a laminated floor, at least including three laminated layers, and the engaging portion and the engaging portion are made of intermediate layer materials; The middle part of the engaging part is provided with a raised tongue; the middle part of the engaging part is provided with a concave tongue groove; The locking groove opening points to the front side, the locking part points to the rear side, and the tongue and groove form a mechanical connection that will mechanically connect the locking part and the locking groove, and the mechanical connection is parallel to the main plane and perpendicular to the joint. The direction of the edge horizontally locks the two pieces of said vinyl flooring to each other; The mechanically connected locking parts and locking grooves can limit the relative movement of the two mutually locked plastic floorboards on the horizontal plane. 2. The plastic floor according to claim 1, characterized in that: the locking parts and the locking grooves are all of "ν" type or "U" structure. 3 . The plastic floor according to claim 2 , wherein a protruding locking member is provided on the side of the tongue close to the rear side, and the connection surface between the tongue and the front side constitutes a first stepped surface, so the The connecting surface between the tongue and the rear side constitutes a second stepped surface, and the distance between the second stepped surface and the tongue portion is greater than the distance between the first stepped surface and the tongue portion; A concave locking groove is arranged on the side of the tongue groove close to the rear side, the connection surface between the tongue groove and the front side constitutes a third stepped surface, and the connection surface between the tongue groove and the rear side constitutes a fourth stepped surface, The distance between the third step surface and the bottom end of the tongue groove is smaller than the distance between the fourth step surface and the bottom end of the tongue groove. 4 . The plastic floor according to claim 3 , wherein the connection between the front side and the first step surface and the third step surface forms a chamfered structure, and the rear side and the second step surface form a chamfered structure. 5 . The connection between the surface and the fourth step surface constitutes a chamfered structure. 5 . The plastic floor of claim 4 , wherein the connection between the third stepped surface and one side of the tongue and groove forms a chamfered structure, and the fourth stepped surface and the tongue and groove are on the other side. 6 . The connection of one side constitutes a circular arc chamfering structure. 6 . The vinyl floor according to claim 5 , wherein the length of the side of the locking member close to the tongue portion is greater than that of the other side, and the side of the locking member adjacent to the tongue portion is the same as the other side. 7 . The included angle of the horizontal plane is smaller than the included angle between the other side and the horizontal plane; the length of the side of the locking groove close to the bottom end of the tongue groove is greater than that of the other side, and the side of the locking groove close to the bottom end of the tongue groove and the horizontal plane The included angle is smaller than the angle between the other side and the horizontal plane. 7 . The plastic floor of claim 6 , wherein the first step surface and the third step surface of the two mutually locked plastic floors are in contact to form an inverted V-shaped structure, and the second step surface There is a gap with the fourth step surface, and there is a gap between the tongue portion and the bottom end of the tongue groove. 8 . The plastic floor according to claim 2 , wherein the connecting surface between the tongue and the front side constitutes a first stepped surface, the connecting surface between the tongue and the rear side constitutes a second stepped surface, and the A concave locking groove is arranged between the second step surface and the tongue; The connecting surface between the tongue groove and the front side constitutes a third stepped surface, the connecting surface between the tongue groove and the rear side constitutes a fourth stepped surface, and a raised protrusion is arranged between the fourth stepped surface and the tongue groove. Lock parts. 9 . The plastic floor according to claim 3 , wherein the middle layer of the plastic floor is made of polymer material. 10 . 10. The vinyl flooring of claim 9, wherein the polymeric material is a thermoplastic material.

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