CN112012428A

CN112012428A - Plastic floor provided with mechanical locking system

Info

Publication number: CN112012428A
Application number: CN201910473148.XA
Authority: CN
Inventors: 蓝伟光; 孙立; 田波
Original assignee: Heyuan Naibao New Building Material Co ltd
Current assignee: Lan Xiaobing
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-12-01

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

Plastic floor provided with mechanical locking system

Technical Field

The invention relates to the technical field of plastic floor. More particularly, the invention relates to a mechanically joinable plastic floor provided with a mechanical locking system having a pull-proof function.

Background

The invention is particularly suitable for laminated plastic floorings, to which the locking system is integrated. The following description of prior art, problems of known systems and objects and features of the invention will therefore be mainly aimed at this field of application and as a non-limiting example. It should be emphasized, however, that the invention can be used for any floor panel that is joined into different patterns by means of a mechanical locking system. Thus, the invention can also be used for floors that are glued or nailed to a sub-floor, or for floors that have a core and have a surface made of plastic, linoleum, cork, painted fiberboard surface, etc.

Conventional plastic flooring is typically installed to float on an existing sub-floor. The joint edges of the plastic flooring are joined to form a floor surface, and the entire plastic flooring surface is movable relative to the sub-floor. Since the plastic floor boards are shrunk or expanded by the relative humidity RH varying with the year, the shape of the surface of the joined plastic floor boards is changed. If the plastic flooring is joined using an adhesive, the change in shape of the surface of the plastic flooring may cause the adhesive to crack. Floorboards have been developed in recent years which are joined mechanically without the use of adhesives by means of mechanical locking systems, which systems comprise locking means which mechanically lock the plastic flooring horizontally and vertically without the use of adhesives. Plastic floorings provided with locking means can be joined mechanically by various combinations of turning, snapping, vertical folding and inserting along the joint edges. However, none of the existing mechanical locking systems is provided with a pull-proof function, and the change of the shape of the plastic floor surface results in a loosening of the mechanical joint.

Definition of terms

In the following, the visible surface of the plastic floor is referred to as "front side", and the opposite side of the plastic floor facing the sub-floor is referred to as "rear side". The edge between the front side and the rear side is referred to as the "joint edge". By "horizontal or major plane" is meant a plane extending parallel to the exterior of the skin. "horizontally" means parallel to the horizontal plane and "vertically" means parallel to the vertical plane. "locking system" refers to co-acting connecting means which connect floor panels vertically and/or horizontally. "mechanical locking system" refers to a system in which the joint is achieved without the use of adhesives. The mechanical locking system may in many cases also be joined using an adhesive.

Disclosure of Invention

The invention provides 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.

The invention provides a plastic floor provided with a mechanical locking system which does not require the use of tools during joining or which requires such a low striking force when using tools such as a striking block and a hammer that no damage is caused to the edges during normal installation. The mechanical locking system is capable of locking the floor panels vertically with high precision so that the floor surfaces are substantially in the same plane.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a be provided with mechanical locking system's plastic floor, mechanical locking system includes block portion and block cooperation portion, and the double-phase opposite end of plastic floor is equipped with respectively and forms integrative block portion and block cooperation portion with plastic floor, and the block portion on plastic floor cooperates the joint with the block cooperation portion on another plastic floor to form mechanical connection with adjacent edge mechanical locking together between the panel.

The plastic floor is a laminated floor and at least comprises three laminated layers, and the clamping part and the clamping matching part are made of middle layer materials. The middle part of the clamping part is provided with a raised tenon, one side of the tenon close to the rear side is provided with a raised locking part, the tenon and the connecting surface of the front side form a first step surface, the connecting surface of the tenon and the rear side form a second step surface, and the distance between the second step surface and the head part of the tenon is greater than that between the first step surface and the head part of the tenon. The middle part of the clamping matching part is provided with a concave mortise, the side edge of the mortise close to the rear side is provided with a concave locking groove, the opening of the locking groove points to the front side, and the locking part points to the rear side. The mortise and the front side are connected to form a third step surface, the mortise and the rear side are connected to form a fourth step surface, and the distance between the third step surface and the bottom end of the mortise is smaller than the distance between the fourth step surface and the bottom end of the mortise. The locking element and the locking groove are both of a v-shaped or U-shaped structure, the locking element points towards the second step surface, the bottom of the locking groove points towards the fourth step surface, and the mechanical connection formed by the tongue and the groove enables the locking element and the locking groove to be mechanically connected, and the mechanical connection enables the two plastic floor boards to be locked with each other horizontally along a direction parallel to the main plane and perpendicular to the joint edge. The locking part and the locking groove which are connected mechanically can limit the relative movement of the two plastic floor boards which are locked with each other in a horizontal plane.

Furthermore, the junction of the front side and the first step surface and the junction of the rear side and the second step surface and the fourth step surface form a chamfer structure.

Furthermore, the junction of the third step surface and one side of the mortise forms a chamfer structure, and the junction of the fourth step surface and the other side of the mortise forms an arc chamfer structure.

Furthermore, the length of the side edge of the locking part close to the head part of the tenon is longer than that of the other side edge, and the included angle between the side edge of the locking part close to the head part of the tenon and the horizontal plane is smaller than that between the other side edge and the horizontal plane; the side length that the locking groove is close to the tongue-and-groove bottom is greater than another side, and the contained angle of the side that the locking groove is close to the tongue-and-groove bottom and horizontal plane is less than the contained angle of another side and horizontal plane.

Further, the locking element is slidably snapped into the locking groove along the rounded chamfer in response to the movement of the tongue into the groove. The first step face and the third step face of two plastic floor that lock each other contact and constitute the type of falling V structure, and the chamfer junction laminating of first step face, third step face seals and prevents that the dust from getting into mechanical locking system, and there is the clearance second step face and fourth step face, and there is the clearance tenon head and tongue groove bottom, and the setting in clearance can leave redundancy for the inflation that the plastic floor later stage probably takes place.

Further, the middle layer of the plastic floor is made of a polymeric material.

Preferably, the polymeric material is a thermoplastic material.

The invention is equally applicable to floor panels which are difficult to snap, for example because the core is not flexible or strong enough to form a strong snap locking system.

When two plastic floors are mechanically jointed, one horizontal plane is placed, the other horizontal plane forms an included angle with the horizontal plane and enables the tenon to be inserted into the mortise until the locking part slides to the opening of the locking groove along the arc chamfer, at the moment, the plastic floor is pressed down to the horizontal plane, at the moment, the locking part is buckled into the locking groove to complete mechanical combination, and the mechanical joint is parallel to the main plane and vertical to the joint edge to horizontally lock the two plastic floors mutually. When separating, only one plastic floor can be tilted to a certain angle relative to the other plastic floor to complete the mechanical separation.

As another plastic floor structure provided by the invention, the plastic floor is a laminated floor and at least comprises three laminated layers, and the clamping part and the clamping matching part are both made of middle layer materials. The middle part of the clamping part is provided with a convex tenon, and the middle part of the clamping matching part is provided with a concave tenon groove. The joint surface of the tenon and the front side forms a first step surface, the joint surface of the tenon and the rear side forms a second step surface, and an inwards concave locking groove is arranged between the second step surface and the tenon. The mortise and the front side connecting surface form a third step surface, the mortise and the rear side connecting surface form a fourth step surface, and a raised locking component is arranged between the fourth step surface and the mortise.

According to the invention, the side edge of the locking part close to the second step surface and the side edge of the locking groove close to the fourth step surface of the two plastic floor boards which are mechanically jointed are jointed to form the locking surface, and the locking surface forms strong locking force. Such a sharp locking member enables a high locking strength to be obtained even if the locking surface is small.

Drawings

The figures further illustrate the invention, but the examples in the figures do not constitute any limitation of the 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 view of mechanical connection of two plastic floors according to embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of mechanical connection of two plastic floors according to embodiment 2 of the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 1, a plastic floor provided with a mechanical locking system, the mechanical locking system includes a fastening portion a and a fastening matching portion b, two opposite ends of the plastic floor are respectively provided with the fastening portion a and the fastening matching portion b which are integrated with the plastic floor, the plastic floor is a laminated floor and includes three laminated layers, both the fastening portion a and the fastening matching portion b are made of middle layer materials, and the middle layer materials are made of hard polyvinyl chloride.

The clamping part a is of a convex structure, a convex tenon 3 is arranged in the middle of the clamping part a, a convex locking part 31 is arranged on one side, close to the rear side 2, of the tenon 3, the connecting surface of the tenon 3 and the front side 1 forms a first step surface 5, the connecting surface of the tenon 3 and the rear side 2 forms a second step surface 6, and the distance between the second step surface 6 and the head of the tenon is larger than the distance between the first step surface 5 and the head of the tenon. The middle part of the clamping matching part b is provided with a concave mortise 4, the side of the mortise 4 close to the rear side 2 is provided with an inward concave locking groove 41, the locking groove 41 is opened towards the front side 1, the connection surface of the mortise 4 and the front side 1 forms a third step surface 7, the connection surface of the mortise 4 and the rear side 2 forms a fourth step surface 8, and the distance between the third step surface 7 and the bottom end of the mortise 4 is smaller than the distance between the fourth step surface 8 and the bottom end of the mortise 4.

The locking part 31 and the locking groove 41 are both of a v-shaped structure, the locking part 31 is directed to the second step surface 6, and the locking groove 41 is directed to the fourth step surface 8. The length of the side of the locking element 31 close to the head of the tongue 3 is longer than that of the other side, and the included angle between the side of the locking element 31 close to the head of the tongue 3 and the horizontal plane is smaller than that between the other side and the horizontal plane. The length of the side edge of the locking groove 41 close to the bottom end of the mortise 4 is larger than that of the other side edge, and the included angle between the side edge of the locking groove 41 close to the bottom end of the mortise 4 and the horizontal plane is smaller than that between the other side edge and the horizontal plane.

The junction of the front side 1, the first step surface 5 and the third step surface 7 forms a chamfer structure, and the junction of the rear side 2, the second step surface 6 and the fourth step surface 8 forms a chamfer structure. The junction of the third step surface 7 and one side of the mortise 4 forms a chamfer structure, and the junction of the fourth step surface 8 and the other side of the mortise 4 forms an arc chamfer 42 structure.

As shown in fig. 2, the engaging portion a of one plastic floor is engaged with the engaging portion b of the other plastic floor, so as to mechanically lock the adjacent edges together to form a mechanical connection between the panels. The mechanical connection of the tongue 3 and the groove 4 results in a mechanical connection of the locking element 31 and the locking groove 41 which locks the two plastic floorboards to each other horizontally in a direction parallel to the main plane and perpendicular to the joint edge, and the mechanically connected locking element 31 and the locking groove 41 limit the relative movement of the two plastic floorboards in the horizontal plane.

When two plastic floor boards are combined mechanically, the mortise 4 is kept horizontal, the tenon 3 tilts to form a certain included angle with the horizontal plane and is pushed into the mortise 4, and the locking part 31 is slidingly buckled into the locking groove 41 along the arc chamfer 42 along with the movement of inserting the tenon 3 into the mortise 4. The first step surface 5 and the third step surface 7 of the two mutually locked plastic floor boards are contacted to form an inverted V-shaped structure, a gap exists between the second step surface 6 and the fourth step surface 8, and a gap exists between the head of the tenon 3 and the bottom end of the mortise 4.

Example 2

As shown in fig. 3, two plastic floorboards are mechanically joined by a mechanical locking system. The mechanical connection of the tongue 3 and the groove 4 results in a mechanical connection of the locking element 31 and the locking groove 41 which locks the two plastic floorboards to each other horizontally in a direction parallel to the main plane and perpendicular to the joint edge, and the mechanically connected locking element 31 and the locking groove 41 limit the relative movement of the two plastic floorboards in the horizontal plane.

When two plastic floor mechanical bonding, the link that is provided with tenon 3 keeps the level, and the other end perk that is provided with tongue groove 4 pushes with horizontal plane certain contained angle, presses down to two plastic floor levels when tongue groove 4 parcel tenon 3, and locking part 31 slides along circular arc chamfer 42 and buckles locking groove 41 and accomplish the joint and lock.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a be provided with mechanical locking system's plastic floor, mechanical locking system includes block portion and block cooperation portion, the two opposite ends on plastic floor be equipped with respectively with plastic floor forms integrative block portion and block cooperation portion, plastic floor block portion and another plastic floor block cooperation joint to with adjacent edge machinery ground locking together form mechanical connection, its characterized in that between the panel:

the plastic floor is a laminated floor and at least comprises three laminated layers, and the clamping part and the clamping matching part are both made of middle layer materials;

the middle part of the clamping part is provided with a convex tenon, the middle part of the clamping matching part is provided with a concave mortise, two opposite ends of the plastic floor are respectively provided with a convex locking part and a concave locking groove, the opening of the locking groove points to the front side, the locking part points to the rear side, the tenon and the mortise form mechanical connection to enable the locking part and the locking groove to be mechanically connected, and the mechanical connection horizontally enables the two plastic floors to be mutually locked along the direction which is parallel to the main plane and is vertical to the joint edge;

the locking part and the locking groove which are mechanically connected can limit the relative movement of the two plastic floor boards which are locked with each other in a horizontal plane.

2. The plastic floor of claim 1, wherein: the locking part and the locking groove are both of a v-shaped or U-shaped structure.

3. The plastic floor of claim 2, wherein: the side, close to the rear side, of the tenon is provided with a raised locking part, the connection surface of the tenon and the front side forms a first step surface, the connection surface of the tenon and the rear side forms a second step surface, and the distance between the second step surface and the head of the tenon is greater than that between the first step surface and the head of the tenon;

the side that the mortise is close to the rear side is provided with the locking groove of indent, the mortise constitutes the third step face with being connected of front side, the mortise constitutes the fourth step face with being connected of rear side, the third step face with the distance of mortise bottom is less than the fourth step face with the distance of mortise bottom.

4. The plastic floor of claim 3, wherein: the front side and the junction of first step face, third step face constitute the chamfer structure, the rear side with the junction of second step face, fourth step face constitutes the chamfer structure.

5. The plastic floor of claim 4, wherein: the joint of the third step surface and one side edge of the mortise forms a chamfer structure, and the joint of the fourth step surface and the other side edge of the mortise forms an arc chamfer structure.

6. The plastic floor of claim 5, wherein: the length of the side of the locking component close to the tongue head is longer than that of the other side, and the included angle between the side of the locking component close to the tongue head and the horizontal plane is smaller than that between the other side and the horizontal plane; the side length that the locking groove is close to the tongue-and-groove bottom is greater than another side, the locking groove is close to the contained angle of the side of tongue-and-groove bottom and horizontal plane is less than the contained angle of another side and 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 floor are in contact to form an inverted V-shaped structure, a gap exists between the second step surface and the fourth step surface, and a gap exists between the head of the tenon and the bottom end of the mortise.

8. The plastic floor of claim 2, wherein: the joint surface of the front side and the joint surface of the tongue form a first step surface, the joint surface of the rear side and the joint surface of the tongue form a second step surface, and an inwards concave locking groove is arranged between the second step surface and the tongue;

the mortise and the front side are connected to form a third step surface, the mortise and the rear side are connected to form a fourth step surface, and a raised locking component is arranged between the fourth step surface and the mortise.

9. The plastic floor as claimed in any one of claims 3-8, wherein: the middle layer of the plastic floor is made of a polymeric material.

10. The plastic floor of claim 9, wherein: the polymeric material is a thermoplastic material.