WO2021027291A1

WO2021027291A1 - Stable snap and lock structure

Info

Publication number: WO2021027291A1
Application number: PCT/CN2020/082236
Authority: WO
Inventors: 刘彬彬; 叶经云
Original assignee: 浙江菱格木业有限公司
Priority date: 2019-08-14
Filing date: 2020-03-31
Publication date: 2021-02-18
Also published as: JP3227822U; CN210659094U

Abstract

The present utility model provides a stable snap and lock structure, comprising a tenon structure and a mortise structure. The tenon structure comprises a tenon portion and a tenon protrusion portion formed on the lower bottom surface of the tenon portion; the mortise structure comprises a mortise portion and a mortise recess portion provided on the inner bottom surface of the mortise portion; and the mortise recess portion is engaged with the tenon protrusion portion. The tenon structure further comprises a front-edge protrusion portion on the upper portion of the front edge of the tenon portion; the mortise structure further comprises an inner-edge recess portion formed on the inner top surface of the mortise portion; and the inner-edge recess portion is engaged with the front-edge protrusion portion. Therefore, the stable snap and lock structure of the present application has the advantages of silent performance and a strong locking force.

Description

A stable lock structure

Technical field

The application relates to the technical field of wooden floor lock structures, and in particular to a stable lock structure.

Background technique

The lock structure is widely used in the assembling and fixing structure of solid wood flooring, composite flooring and laminate flooring. Because the wooden floor has the characteristics of dry shrinkage and wet swelling, in particular, the solid wood floor has a relatively large rate of dimensional change and anisotropy. Therefore, when the lock structure is designed to be loosely assembled, the shrinkage and tension of the wooden floor will cause the lock Disengagement; when it is designed to be tightly assembled, the lifting force of the wooden floor will also cause the lock to disengage, and there will be a pedaling noise.

Utility model content

The technical purpose of the present application is to overcome the above technical problems and provide a stable lock structure which can effectively avoid the lock disengagement caused by contraction tension or jacking force, so that the lock structure has both Mute and strong locking effect.

In order to achieve the above technical purpose, the present invention provides a stable locking structure, including a male tenon structure and a female tenon structure. The male tenon structure includes a male tenon portion formed on the lower bottom surface of the male tenon portion The male and tenon convex portion on the upper part, the female and tenon structure includes a female and tenon part, a female and tenon concave part opened on the inner bottom surface of the female and tenon part, and the female and tenon concave part is matched with the male and tenon convex part The male tenon structure further includes a front edge convex portion formed on the upper part of the front edge of the male tenon portion, the female tenon structure further includes an inner edge concave portion opened on the inner top surface of the female tenon portion, and The inner edge concave portion is matched with the front edge convex portion.

In the prior art lock structure, a male tenon convex portion is formed on the lower bottom surface of the male tenon portion, and a female tenon portion is provided on the inner bottom surface of the female tenon portion, and the lock is realized by the cooperation of the two. However, in consideration of ease of assembly, the female tenon recess is designed as an inverted trapezoidal groove with inclined groove walls on both sides, and the shape of the male tenon convex part matches the shape of the female tenon recess. Through long-term practice and research, the inventor of the present application has discovered that when the wooden floor shrinks in a dry environment, two adjacent floor blocks move away from each other on both sides, and because the second convex side of the male and tenon convex part and the female The abutting action between the side surfaces of the second concave portion of the tenon and concave portion causes the second convex portion side surface of the male tenon convex portion to slide upward along the second concave portion side surface of the female tenon concave portion, and finally the lock structure is disengaged. When the wooden floor expands in a humid environment, the female and tenon recesses in the shape of an inverted trapezoid groove form a squeeze on the male and tenon convex parts, so that the male and tenon convex parts are lifted up, and finally the locking structure is disengaged.

In this application, with the above structure, when the wooden floor shrinks in a dry environment, the side surface of the second convex portion of the male and tenon convex portion has a tendency to slide upward along the side surface of the second concave portion of the female tenon concave portion, or, when When the wooden floor expands in a humid environment, the female and tenon concave part squeezes the male and tenon convex part to lift the male and tenon convex part. By the cooperation of the front edge convex part and the inner edge concave part, the male tenon convex part and the female tenon concave part are combined With the cooperation of, the front edge convex part abuts the inner edge concave part to prevent the male tenon structure from falling out of the female tenon structure. Therefore, the stable lock structure of the present application will not cause the problem of lock disengagement due to the shrinkage and expansion of the wooden floor. At the same time, the lock structure can also select the appropriate assembly tightness according to the actual situation of the pedaling noise. .

As a preferred technical solution, the protrusion height of the front edge protrusion is 0.45 mm to 0.75 mm.

As a preferred technical solution, the front edge convex portion includes an inner side surface of the front edge convex portion close to the side of the male tenon portion, and an outer surface of the front edge convex portion connected to the front end surface of the male tenon portion There is an angle of 140°-150° between the plane formed by the top line and the root of the inner surface of the front edge convex portion and the upper top surface of the male tenon portion.

In this technical solution, the plane formed by the top line and the root of the inner surface of the front edge convex portion is set to have an angle of 140°-150° with the upper top surface of the tenon portion, thereby ensuring convenience Under the premise of easy installation, the cooperation between the male tenon convex portion and the female tenon concave portion forms a self-locking.

As a preferred technical solution, the inner edge concave portion includes a first inner edge concave portion side wall that abuts and fits with the inner surface of the front edge convex portion, and a second inner edge opposite to the first inner edge concave portion side wall The side wall of the concave portion and the bottom surface of the inner edge concave portion, and an angle of 135°-145° is formed between the side wall of the first inner edge concave portion and the first top surface.

As a preferred technical solution, there is an angle of 150°-160° between the side wall of the second inner edge recess and the second top surface.

In this technical solution, the second inner edge recessed part side wall is set to have an angle of 150° to 160° with the second top surface, so that when the wooden floor expands in a humid environment, the front edge convex Only a line contact is formed between the top or the front side and the side wall of the second inner edge recess, which can effectively prevent the two from forming surface contact to avoid the problem of noise.

As a preferred technical solution, there is a gap of 0.08 mm to 0.12 mm between the first top surface and the upper top surface of the tenon portion.

As a preferred technical solution, the distance between the first top surface and the floor surface is 0.32 mm to 0.50 mm larger than the distance between the second top surface and the floor surface.

In this technical solution, by setting the second top surface higher than the first top surface, it can be matched with the inclination angle of the side wall of the second inner edge concave portion to further avoid the top or front edge of the convex portion. A surface contact is formed between the side and the side wall of the second inner edge recess to avoid noise problems.

As a preferred technical solution, the male and tenon convex portion includes a first convex portion side surface, a second convex portion side surface, and a convex portion top surface, and the female tenon concave portion includes the first convex portion side surface, the The second convex portion side surface, the first concave portion side surface, the second concave portion side surface, and the concave portion bottom surface matched with the convex portion top surface. After assembly, the second convex portion side surface abuts against the second concave portion side surface, and the first There is a gap of 0 mm to 0.2 mm between a side surface of the convex portion and the side surface of the first concave portion.

As a preferred technical solution, the side surface of the first convex portion abuts against the side surface of the first concave portion.

In the prior art, in order to prevent the wooden floor from squeezing the male tenon and the convex part of the wooden floor in a humid environment, the male tenon and convex part will be lifted up, causing the problem of the lock and disengagement. A relatively large gap is reserved between the sides of a concave portion, which in one aspect causes the stepping noise of the lock buckle. In the present technical solution, by setting the reserved gap between the side surface of the first convex portion and the side surface of the first concave portion to be a relatively small gap or no gap (butting fit), noise can be avoided relatively effectively.

As a preferred technical solution, the inner side wall and inner bottom surface of the female tenon portion are connected by a transition surface, and an acute angle of 10°-15° is formed between the transition surface and the horizontal plane.

Through the technical solution of the present application, by the cooperation of the front edge convex portion and the inner edge concave portion, and the cooperation of the male tenon convex portion and the female tenon concave portion, the front edge convex portion abuts against the inner edge concave portion to prevent the male tenon structure from changing from Out of the female tenon structure. Therefore, the stable lock structure of the present application will not cause the problem of lock disengagement due to the shrinkage and expansion of the wooden floor. At the same time, the lock structure can also select the appropriate assembly tightness according to the actual situation of the pedaling noise. . Therefore, the stable lock structure of the present application has the advantages of silence and strong locking force.

Description of the drawings

The drawings constituting a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

Figure 1 is a schematic diagram of a stable lock structure according to an embodiment of the utility model;

Figure 2 is a schematic diagram of the leading edge protrusion of the embodiment of the utility model;

Figure 3 is a schematic diagram of the inner edge recess of the embodiment of the utility model;

Figure 4 is a partial enlarged view of A in Figure 1;

In the figure, 100-male tenon structure, 200-female tenon structure, 300-floor surface, 110-male tenon, 120-male tenon, 130-leading edge convex, 210-female tenon, 220- Female tenon recess, 230-inner edge recess, 250-inner side wall, 260-inner bottom surface, 270-transition surface, 121-first convex part side surface, 122-second convex part side surface, 123-convex top surface, 131- The inner surface of the leading edge convex portion, 132-the outer surface of the leading edge convex portion, 221-the side surface of the first concave portion, 222-the side surface of the second concave portion, 223-the bottom surface of the concave portion, 231-the side wall of the first inner edge concave portion, 232-the second inner edge The side wall of the recess, 233-the bottom surface of the inner edge recess, 241-the first top surface, and 242-the second top surface.

detailed description

Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

Embodiment: Refer to a stable lock structure shown in FIG. 1, including a male tenon structure 100 and a female tenon structure 200. The male tenon structure 100 includes a male tenon portion 110 formed on the lower bottom surface of the male tenon portion 110 The male and tenon convex portion 120, the female and tenon structure 200 includes a female and tenon portion 210, a female and tenon concave portion 220 opened on the inner bottom surface of the female and tenon portion 210, and the female and tenon concave 220 is matched with the male and female convex portion 120; The tenon structure 100 further includes a front edge protrusion 130 formed on the upper part of the front edge of the male tenon portion 110, and the female tenon structure 200 further includes an inner edge concave portion 230 opened on the inner top surface of the female tenon portion 210, and the inner edge concave portion 230 It cooperates with the front edge protrusion 130.

In the present application, with the above structure, when the wooden floor shrinks in a dry environment, the second convex side 122 of the male and tenon convex portion 120 has a tendency to slide upward along the second concave side 222 of the female and tenon concave 220 , Or, when the wooden floor expands in a humid environment, the female tenon concave portion 220 squeezes the male tenon convex portion 120 to lift the male tenon convex portion 120 up, and the front edge convex portion 130 and the inner edge concave portion 230 cooperate and merge Combined with the cooperation of the male tenon convex portion 120 and the female tenon concave portion 220, the front edge convex portion 130 abuts the inner edge concave portion 230 to prevent the male tenon structure 100 from falling out of the female tenon structure 200. Therefore, the stable lock structure of the present application will not cause the problem of lock disengagement due to the shrinkage and expansion of the wooden floor. At the same time, the lock structure can also select the appropriate assembly tightness according to the actual situation of the pedaling noise. .

Specifically, as shown in FIG. 2, the protrusion height of the front edge protrusion 130 is 0.45 mm to 0.75 mm. The front edge protrusion 130 includes a front edge protrusion inner side surface 131 close to the male tenon portion 110, a front edge protrusion outer side surface 132 connected to the front end surface of the male tenon portion 110, and the top of the front edge protrusion inner surface 131 There is an angle of 140°-150° between the plane B formed by the line and the root and the top surface of the male tenon portion 110. Preferably, there is an angle of 145° between the plane B and the upper top surface of the male tenon portion 110.

In the present technical solution, by setting the inclination angle of the inner surface 131 of the front convex portion and the height of the convex portion 130 of the front edge convex portion, it is possible to align it with the male and tenon convex portion while ensuring easy installation. 110. The cooperation between the female and tenon recesses 210 forms a self-locking.

3, the inner edge concave portion 230 includes a first inner edge concave portion side wall 231 that abuts and fits with the inner surface 131 of the front edge convex portion, and a second inner edge concave portion side wall 232 opposite to the first inner edge concave portion side wall 231 , Bottom surface 233 of the inner edge recess. There is an angle of 135°-145° (preferably 140°) between the first inner edge recessed portion side wall 231 and the first top surface 241, and the second inner edge recessed portion side wall 232 and the second top surface 242 have an angle of 150° to An angle of 160° (preferably 155°). In addition, the distance between the first top surface portion 241 and the floor surface 300 is greater than the distance between the second top surface portion 242 and the floor surface 300 by 0.32 mm to 0.50 mm.

In the present technical solution, the second inner edge recessed portion side wall 232 is set to have an angle of 150° to 160° with the second top surface 242, so that when the wooden floor expands in a humid environment, the front edge is convex There is only a line contact between the top of the portion 130 or the front side and the side wall 232 of the second inner edge concave portion, which can effectively prevent the two from forming surface contact to avoid the problem of noise.

Further, by setting the second top surface portion 242 higher than the first top surface portion 241, it can be matched with the inclination angle of the side wall 232 of the second inner edge concave portion to further avoid the top of the convex portion of the front edge 130, or A surface contact is formed between the front side and the side wall 232 of the second inner edge recess to avoid the problem of noise.

Looking back at FIG. 1, there is a gap of 0.08 mm˜0.12 mm between the first top surface 241 and the upper top surface of the male tenon portion 110.

The male and tenon convex portion 120 includes a first convex portion side surface 121, a second convex portion side surface 122, and a convex portion top surface 123. The female tenon concave portion 220 includes a first convex portion side surface 121, a second convex portion side surface 122, and a convex portion top surface. The first concave portion side surface 221, the second concave portion side surface 222, and the concave portion bottom surface 223 are matched with the surface 123. After assembly, the second convex portion side surface 122 abuts against the second concave portion side surface 222, and the first convex portion side surface 121 and the first concave portion side surface There is a gap of less than 0.2mm between 221. Or, in some other embodiments, the first convex portion side surface 121 and the first concave portion side surface 221 abut without a gap.

In the prior art, in order to prevent the wooden floor from being in a humid environment, the female tenon concave portion 220 squeezes the male tenon convex portion 120 to raise the male tenon convex portion 120, causing the problem of the lock and disengagement. A relatively large gap is reserved between the side surface 121 and the side surface 221 of the first recess, which in one aspect causes the pedaling sound of the lock. In the present technical solution, by setting the reserved gap between the first convex portion side surface 121 and the first concave portion side surface 221 to a relatively small gap or no gap (butting fit), the noise can be more effectively avoided. .

As a preference, the inner side wall 250 and the inner bottom surface 260 of the female tenon portion 210 are connected by a transition surface 270, which has an acute angle of 10°-15° (preferably 12°) between the transition surface 270 and the horizontal plane to Conducive to easy assembly.

In the embodiment of the present application, both the male and female tenon structures are made by forming and milling on the peripheral side of the wooden floor blank.

The above descriptions are only preferred embodiments of the application, and are not used to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A stable locking structure includes a male tenon structure (100) and a female tenon structure (200). The male tenon structure (100) includes a male tenon part (110) formed on the male tenon part (110). ) The male and tenon convex portion (120) on the lower bottom surface, the female tenon structure (200) includes a female tenon portion (210), and a female tenon concave portion opened on the inner bottom surface of the female tenon portion (210) (220), and the female and tenon concave portion (220) is matched with the male and tenon convex portion (120); characterized in that, the male and tenon structure (100) further includes the male and tenon portion (110) ) The front edge convex portion (130) at the upper part of the front edge, the female tenon structure (200) further includes an inner edge concave portion (230) opened on the inner top surface of the female tenon portion (210), and the inner The edge recess (230) is matched with the front edge protrusion (130).
The stable lock structure according to claim 1, wherein the protrusion height of the front edge protrusion (130) is 0.45 mm to 0.75 mm.
The stable lock structure according to claim 1, wherein the front edge protrusion (130) comprises an inner surface (131) of the front edge protrusion close to the side of the male tenon portion (110). ), the outer surface of the front convex portion (132) connected to the front end surface of the male tenon portion (110), and the plane formed by the top line and the root of the inner surface of the front edge convex portion (131) is in line with the male The upper and top surfaces of the tenon part (110) have an angle of 140°-150°.
The stable lock structure according to claim 3, wherein the inner edge concave portion (230) comprises a first inner edge concave portion side wall that abuts and fits with the inner side surface (131) of the front edge convex portion (231), the second inner edge recessed portion side wall (232) opposite to the first inner edge recessed portion side wall (231), the bottom surface of the inner edge recessed portion (233), the first inner edge recessed portion side wall (231) There is an angle of 135°-145° with the first top surface (241).
The stable lock structure according to claim 4, wherein the second inner edge concave portion side wall (232) and the second top surface portion (242) have an angle of 150°-160°.
The stable lock structure according to claim 5, characterized in that there is a distance of 0.08mm～0.12mm between the first top surface (241) and the upper top surface of the tenon portion (110). Clearance.
A stable lock structure according to claim 5, wherein the distance between the first top surface (241) and the floor surface is greater than the distance between the second top surface (242) and the floor surface. The distance between them is 0.32mm～0.50mm larger.
The stable lock structure according to claim 1, wherein the male tenon convex portion (120) includes a first convex portion side surface (121), a second convex portion side surface (122), and a convex portion top surface. Surface (123), the female and tenon concave portion (220) includes matching with the first convex portion side surface (121), the second convex portion side surface (122), and the convex portion top surface (123) respectively The first concave portion side surface (221), the second concave portion side surface (222), and the concave portion bottom surface (223). After assembly, the second convex portion side surface (122) abuts against the second concave portion side surface (222), the There is a gap of 0 mm to 0.2 mm between the first convex portion side surface (121) and the first concave portion side surface (221).
The stable lock structure according to claim 8, characterized in that the side surface (121) of the first convex portion abuts against the side surface (221) of the first concave portion.
The stable lock structure according to claim 1, wherein the inner side wall (250) and the inner bottom surface (260) of the female tenon portion (210) are connected by a transition surface (270), There is an acute angle of 10°-15° between the transition surface (270) and the horizontal plane.