HK1170554B - Floorboard fixing device - Google Patents

Description

Floor fixing piece

Technical Field

The present invention relates to a floor panel fastener for fastening a floor panel such as a wooden deck or a wooden floor to a support such as a joist by fasteners such as screws, nails, or screws, and for fastening the floor panel to the support such as the joist, wherein grooves are formed in both side surfaces of the floor panel in the width direction along the longitudinal direction of the floor panel, and more particularly to a floor panel fastener for fastening a synthetic wood floor panel by a method such as japanese patent laid-open publication No. 3543021.

Background

Taking a wood deck as an example, as shown in fig. 7, for example, in the construction of the wood deck, a post 6 is erected on an installation surface 9 such as a foundation or the like as needed, a support 5 such as a joist is erected on the post 6, a deck panel as a floor 4 is placed in parallel in a predetermined direction on the support 5 at a predetermined interval, and the floor 4 is fixed to the support 5, thereby performing the construction of the wood deck.

As the simplest way of fixing the floor panel 4 to the support 5, as shown in fig. 8, fixing members such as nails and screws 7' are driven from the surface of the floor panel 4 to the support 5 to fix the floor panel 4 directly to the support 5 using the nails and screws.

However, in the case of the above-described manner, since the heads of the nails and screws 7' are exposed to the surface of the floor panel 4, the appearance is poor, and in addition, when the heads of the fixing members such as the nails and screws are protruded from the surface of the floor panel 4 as the use time increases, a danger occurs in walking on the floor panel, etc.

In addition, when the floor 4 that has been constructed is removed, since the surface of the floor 4 is left with nails and screw holes, it is necessary to perform a complicated operation such as hole filling when the floor after use that is recovered from a disassembled house or the like is reused.

Therefore, as shown in fig. 9 (a) and (B), there is disclosed a method of mounting the floor panel 4 on the support member 5 using the floor panel fixing members 100 and 110 without directly driving a nail or screw into the surface of the floor panel 4, and in order to enable mounting by using such floor panel fixing members 100 and 110, there is also disclosed the following method: grooves 41 continuous in the longitudinal direction of the floor panel 4 are formed in side surfaces 40 constituting both end surfaces in the width direction of the floor panel 4, and the floor panel 4 is fixed to the support member 5 by fixing the floor panel fixing members 100 and 110 fitted to the grooves 41 to the support member 5.

In this way, in order to fix the floor 4 to the support 5, the following means are disclosed: a long groove type fitting provided with flange portions 101 protruding outward from the upper end opening edge is used as the floor fixing 100, the flange portions 101 of the floor fixing 100 are respectively inserted into grooves 41 formed on the opposite side surfaces 40 of the floor 4 adjacently disposed, and by forming nail holes 102 in the bottom plate at regular intervals in the longitudinal direction and driving (screwing) screws 7' inserted into the nail holes 102 into the support 5, respectively, the floor 4 is fixed to the support 5 by the floor fixing 100 (see fig. 9 (a)), and further, the following means is disclosed: the floor panel 4 is fixed to the support 5 by using the floor panel fixing 110 having the T-shaped cross section including the strap 111 and the intermediate piece 112 protruding from the back surface of the strap 111, inserting the strap 111 of the floor panel fixing 110 into the groove 41 of the floor panel 4, and driving (screwing) the screw 7' inserted into the screw hole 113 penetrating the intermediate piece 112 in the vertical direction in the drawing into the support 5 (see fig. 9B).

In addition, the following scheme is disclosed: in the structure of the floor fixing 100 described with reference to fig. 9 a, as shown in fig. 10, a claw 103 having a serrated end edge is formed at the front end of the flange portion 101, and when fixing is performed with a screw 7 ', the claw 103 bites into the inner wall of the groove 41 of the floor panel 4 (see patent document 1; fig. 10), and in the structure of the floor fixing 110 described with reference to fig. 9B, the floor fixing 110 is deformed as the screw 7' is screwed into the support 5, and the contact resistance between the floor fixing 110 and the inner wall of the groove 41 provided in the floor panel 4 is increased by the deformation (see patent document 2; fig. 11).

Patent document 1: japanese laid-open patent publication No. 2002-146901

Patent document 2: japanese patent laid-open publication No. 2008-285929

Patent document 3: japanese patent laid-open publication No. 2008 + 255601

Patent document 4: japanese patent laid-open publication No. 2008-031827

Patent document 5: japanese patent laid-open publication No. 2006-226029

Patent document 6: japanese Utility model gazette No. 3091481

In the above-described fixing method of the floor panel 4, according to the fixing method described with reference to (a) and (B) of fig. 9, even if the floor panel 4 is to be peeled off above the support 5, the inner wall of the groove 41 formed in the side surface 40 of the floor panel 4 comes into contact with the flange portion 101 or the lap 111 of the floor fixing members 100 and 110, and therefore, the floor panel 4 is fixed to the support 5 and is not peeled off.

However, since the floor panel 4 and the floor panel fixtures 100 and 110 are directly connected to each other by the floor panel fixtures 100 and 110, the force for restricting the movement of the floor panel 4 in the longitudinal direction is weak, although it is effective in preventing the floor panel 4 from being peeled upward.

Therefore, if a person walks on the floor 4 fixed as described above, if a force is applied to the floor 4 to move in the longitudinal direction, the floor may move in the longitudinal direction and come off, and in this case, for example, it is necessary to provide a cross member that abuts against an end of the floor 4 and restricts the movement of the floor on both ends in the longitudinal direction of the floor 4.

However, even if the end portion of the floor panel 4 cannot move over the cross member by providing the cross member as described above, since it is necessary to provide a slight gap between the end portion of the floor panel 4 and the cross member in consideration of expansion or contraction of the floor panel 4 accompanying changes in air temperature and humidity, if the floor panel 4 moves in the longitudinal direction at the gap portion and the end portion of the floor panel 4 collides with the cross member every time a person walks, noise is generated by the collision, and deformation such as twisting or breakage occurs.

According to the floor panel fastener 100 described in patent document 1 shown in fig. 10, the floor panels 4 adjacent to each other are connected by causing the claws 103 provided on the flange portions 101 to bite into the inner walls of the grooves 41 of the floor panels 4 (paragraph 0055 of patent document 1), and the floor panel fastener 100 is given a function similar to "cramping" by providing the claws 103, and when such claws 103 are provided and bite into the floor panels 4, the floor panels 4 are firmly connected to the floor panel fastener 100, and as a result, when the floor panel fastener 100 is used, the floor panels 4 can be effectively prevented from moving in the longitudinal direction.

However, the floor panel 4, particularly the floor panel 4 made of synthetic wood, has a relatively large dimensional change due to a change in air temperature, a moisture absorption state, and the like, and particularly the dimensional change in the longitudinal direction of the floor panel 4 is large. For example, the case of a 6m wood composite board is as follows.

Coefficient of linear expansion: 4.4X 10^-5(℃^-1) (ii) a Measurement temperature range: -10 ℃ to 90 ℃ (according to JIS K7197)

According to (linear expansion coefficient x plate length x temperature difference)

Expansion length of 6m plate length (Δ L): Δ L ═ 5.28mm (20 ℃; Δ L is 10.56mm (20 → 60 ℃: Δ T: 40 ℃).

Therefore, as in the floor fixing 100 of fig. 10, if the claws 103 are engaged with the floor panel 4 to firmly connect the floor panel 4 and the floor fixing 100, dimensional changes of the floor panel 4 due to expansion or contraction cannot be absorbed, and a large force acts on the floor fixing 100, so that the floor fixing 100 is broken or deformed, the screws 7' are removed, and the floor panel 4 cannot be fixed, and further, deformation such as bending or twisting may occur in the floor panel 4.

Therefore, it is preferable that the floor panel fixture fixes the floor panel 4 in such a manner that the movement of the floor panel 4 can be restricted to such an extent that a load in a normal use state is applied when a person walks or the like, and that the movement of the floor panel 4 can be allowed when a strong force that causes the floor panel 4 to be damaged is applied such as when the floor panel 4 undergoes a dimensional change due to expansion or contraction itself, or the like.

In response to the above-described demand, according to the floor fixing 110 described in patent document 2 described with reference to fig. 11, the floor fixing 110 is formed of a flexible material such as a resin material, and the floor fixing 110 is deformed by screwing the screw 7', so that the pressing force of the strap 111 against the inner wall of the groove 41 provided in the side surface 40 of the floor 4 is increased, and the movement of the floor 4 in the longitudinal direction is restricted, so that the floor 4 is not moved by the force applied in a normal use state such as when a person walks on the floor 4, and when an extremely large force is applied due to the change in the size of the floor 4 itself caused by expansion or contraction, the movement of the floor 4 accompanying the change in the size can be.

However, according to the floor fixing 110 described in patent document 2, in order to deform the floor fixing 110, in a preferred embodiment, the shape is complicated by forming a notch in the intermediate sheet 112 or by forming a thick portion and a thin portion in the overlapping sheet 111.

In addition, according to the floor panel fixture 100 described with reference to fig. 9 (a) and 10, in order to hide the head of the screw 7 'in the gap formed between the floor panels 4 during construction, the diameter r of the head of the screw 7' needs to be smaller than the groove width W formed in the floor panel fixture 100₁Further, according to the floor fixing 110 described with reference to fig. 9 (B) and 11, the screw used needs to have a head diameter r at an interval W between the side surfaces 40 of the adjacent floor boards 4 (hereinafter, the interval is referred to as "joint width")₂The following.

Therefore, if the width W of the joint of the floor 4 is used₂When the screw 7 ' is constructed in a relatively narrow manner, the diameter r of the head of the screw 7 ' to be used is inevitably reduced, and thus the torque from a tool such as a screwdriver deforms the tool fitting recess formed in the head, and as a result, the screw 7 ' cannot be screwed.

On the other hand, in the fixing of the floor panel 4 described with reference to fig. 9 (B) and 11, it is purposely used that the diameter r of the head is larger than the jointWidth W₂In the case of the screw (7 '), when the screw (7') is screwed, the head of the screw (7 ') cuts the side surface (40) of the floor (4), so that the appearance after construction is deteriorated, and much effort is required to fill and repair the portion of the screw (7') where the head is cut with putty or the like in order to improve the appearance.

In addition, even when the screw 7 'having a head diameter smaller than the joint width is used, the side surface 40 of the floor panel 4 may be cut off when the screw 7' is driven obliquely or the like.

Disclosure of Invention

In order to overcome the above-described drawbacks of the prior art, it is an object of the present invention to provide a floor panel fixing member which has a relatively simple structure, and which restricts movement of a floor panel in a longitudinal direction when an external force generated in a normal use state such as when a person walks on the floor panel is applied to the floor panel, and which allows movement when a contact position of the floor panel with the floor panel fixing member is moved in the longitudinal direction due to a dimensional change caused by expansion or contraction of the floor panel and a strong force is generated.

Further, in addition to the above objects, the present invention provides a floor panel fastener, as a fastener for fastening the floor panel fastener to a support member, a screw having a disk-shaped head with a head diameter as large as possible can be used, and even when a construction is performed using the screw with the large head diameter, the head of the screw does not protrude from the surface of the floor panel, and the head of the screw does not cut the side surface in the width direction of the floor panel.

Hereinafter, a description will be given of a mode for solving the technical problem, with reference to the reference numerals in the embodiments. The reference numerals described above are used to clearly correspond to the description of the embodiments and are not intended to limit the scope of the claims of the present invention.

The floor fixing member of the present invention for fixing a floor board having grooves formed in the lengthwise direction on the side surfaces of both ends in the widthwise direction is characterized in that a lap joint piece and a spacer piece are formed of a flexible synthetic resin material, and the lap joint piece is inserted into the grooves formed on the side surfaces of two floor boards adjacently disposed so as to lap the two floor boards adjacently disposed; the spacer is protruded from the middle position of the strap in the width direction to the front and back of the floor, and is clamped between the side surfaces of two adjacent floor boards, the spacer is formed with an insertion hole penetrating the spacer in the protrusion direction, the upper end part of the insertion hole is formed in a tapered shape expanding upward, a plurality of convex strips are formed on the side surface of the spacer contacting with the side surface of the floor board along the direction vertical to the length direction of the side surface of the floor board, a fixing member having a disk head is inserted into the insertion hole of the spacer, the end part of the strap is pressed on the inner wall of the floor board formed in the groove of the floor board, the inclined side surface formed on the lower surface of the head part of the fixing member contacts with the lower end and the upper end of the chamfered part of the side surface of the floor board on the same plane, the diameter of the disk head of the fixing member is smaller than the width between the upper ends of the chamfered parts of the floor boards, And a chamfered portion formed at least at a corner portion at both ends in the width direction adjacent to each other on the floor surface side at a position where the spacer is inserted into the floor panel, wherein a height from a lower end of the overlapping flap to an upper end of the spacer at the insertion hole forming position is substantially the same as a height from a floor back side inner wall formed in the groove of the floor panel to a lower end of the chamfered portion.

The floor panel fixing member 1 is configured such that a plurality of (at least two) floor panels 4, 4 · (hereinafter, simply referred to as "4") adjacent to each other on the side surface are fixed to a support member such as a joist by a fixing member, and grooves 41, 41 are formed continuously in the longitudinal direction of the floor panel 4, preferably in both side surfaces of a side surface 40 constituting both end surfaces in the width direction of the floor panel 4.

Further, the floor fixing 1 includes: a strap 3 having a convex strip 22 formed of a flexible synthetic resin material; and a spacer 2 having an insertion hole 21, wherein the overlapping piece 3 is inserted into the grooves 41, 41 to overlap two floor boards 4 arranged adjacently.

The spacer 2 is sandwiched between the side surfaces 40 of the two floor boards 4 disposed adjacent to each other, and is formed to protrude from the intermediate position in the width direction of the lap joint 3 in the front and rear direction of the floor boards.

The insertion hole 21 is formed in the spacer 2 so as to penetrate the spacer 2 in the projecting direction. In addition, it is preferable that a plurality of the convex portions 22 and 22 'are formed on at least one side surface 23 of the spacer 2 contacting the two side surfaces 40 of the floor panel 4, and the convex portions 22 and 22' are arranged at predetermined intervals in a direction perpendicular to the longitudinal direction of the floor panel side surface 40 of the spacer 2.

Further, a fixing member 7, which is a so-called countersunk screw (see fig. 5B) in the embodiment, of a screw, a nail, or a screw having a head 71 (referred to as "disc head" in the present specification) in a disc shape, so-called inverted truncated cone shape, is inserted into the insertion hole 21 of the spacer 2, and the diameter of the head 71 is smaller than the width between the upper ends of the chamfered portions 43, 43 and larger than the joint width W determined by the wall thickness of the spacer 2₂The chamfered portions 43, 43 are formed at least at the corners at both ends in the width direction adjacent on the surface side of the floor panel 4 at the position where the spacer 2 is inserted in the floor panel. Further, the height H (see fig. 1 (a) and (B)) from the lower end of the strap 3 to the upper end of the spacer 2 at the position where the insertion hole 21 is formed is substantially the same as the height H (see fig. 5) from the floor back side inner wall 41a formed in the groove 41 of the floor panel 4 to the lower end 43B of the chamfered portion 43 (claims 1 and 5).

As described above, the chamfered portions 43 and 43 may be provided at least at the insertion (formation) position of the spacer 2 (insertion hole 21).

In the floor fixing 1 configured as described above, the top 22a of each of the convex portions 22 and 22 'may be formed in a shape of a triangle formed by one side in the vertical direction and the other side at an acute angle in parallel in a continuous manner in a planar view, and may be formed in a sharp shape so that the side surface 23 of the spacer 2 on which the convex portions 22 and 22' are provided is formed in a so-called zigzag shape (claim 2).

When the top portions 22a of the ridges 22, 22' are formed to have a sharp shape in this way, the top portions 22a of the ridges 22 may be offset to one side in the width direction of the ridges 22 (claim 3; see an enlarged view in fig. 2D).

Further, the length L (see fig. 1 (a)) from the lower end of the strap 3 to the lower end of the spacer 2 may be made slightly shorter than the height L (see fig. 5; claim 4) from the back surface of the floor panel 4 to the floor panel back surface side inner wall 41a of the groove 41.

Preferably, the strap 3 and the spacer 2 protruding from the strap in the above-mentioned direction are formed integrally into a cross-sectional shape by using one or more resin materials selected from the group consisting of ABS resin, polypropylene, polyethylene, vinyl chloride, nylon, and glass fiber-reinforced polypropylene (glass fiber length: 0.5 to 5 mm; glass fiber content: 10 to 40 parts by weight) (claim 6).

Further, the protruding length of the strap 3 is formed as follows: when the spacer 2 is clamped between the side faces 40 of the floor panel 4, the overlapping flap 3 does not interfere with the inner wall of the floor panel 4 existing at the deepest portion of the groove 41 (claim 7).

Preferably, a plurality of ridges in a stripe shape are formed on a portion of the strap 3 that contacts the inner wall surface of the groove 41 of the floor panel 4 (claim 8).

With the above-described structure of the present invention, the floor fixing 1 according to the present invention can obtain the following effects.

By providing the spacer 2 sandwiched by the side surfaces 40 of the floor panel 4 not only on the back surface side but also on the upper surface side of the strap 3 and forming the floor panel fixing 1 into a cross-shaped cross section (see fig. 1B), not only the contact area between the floor panel fixing 1 and the floor panel 4 is increased, but also the contact resistance between the floor panel fixing 1 and the floor panel 4 can be greatly increased by providing the plurality of convex portions 22 on the side surface 23 of the spacer 2.

As a result, the floor panel 4 can be sufficiently prevented from moving in the longitudinal direction by the force applied in a normal use state such as when a person walks on the floor panel 4 without directly fixing the floor panel 4 and the floor panel fixture 1, while the floor panel 4 can be allowed to move when the floor panel 4 changes in size due to expansion or contraction and the contact position between the floor panel 4 and the floor panel fixture 1 is moved by an extremely strong force applied, and it is possible to effectively prevent the floor panel 4 from being deformed such as bent or twisted by breakage of the floor panel fixture 1 or falling off of the fixture 7 such as a screw due to expansion or contraction of the floor panel.

When the floor panel fastener 1 is viewed in plan, the top portions 22a of the ridges 22, 22' are formed into a sharp shape, so that the side surfaces 23 of the spacer 2 are formed into a zigzag configuration, whereby the contact resistance between the floor panel 4 and the floor panel fastener 1 can be further increased, and the floor panel 4 can be further reliably prevented from moving in the longitudinal direction in a normal use state such as when a person walks on the floor panel 4.

In particular, by biasing the top portions 22a of the ridges 22 to one side in the width direction of the ridges 22, the floor fixing 1 can be provided in which the movement of the floor panel 4 in any one of the longitudinal directions can be more strongly restricted.

When the length L from the lower end of the strap 3 to the lower end of the spacer 2 is shorter than the height L from the back surface of the floor 4 to the floor back side inner wall 41a of the groove 41, when the floor fixing 1 is attached to the support 5 by a fixing member such as a screw, the lower end of the strap 3 is firmly pressed against the floor back side inner wall 41a of the groove, whereby the floor can be firmly fixed while allowing the floor to move in the longitudinal direction along with expansion or contraction.

In the floor 4 forming the chamfered part 43, the height h from the lower end of the strap 3 to the upper end of the spacer 2 at the insertion hole forming position is equal to the height h from the upper end of the spacerThe floor back side inner wall 41a of the groove of the floor panel 4 has substantially the same height to the lower end 43b of the chamfered portion 43, and the chamfered portion 43 is formed by chamfering the corner portions at both ends in the width direction on the surface side of the adjacent floor panels 4, 4 in the surface side of the floor panel 4 at least at the position where the spacer 2 is inserted. Further, by fixing the floor panel to the support by using a countersunk screw having a head 71 with a diameter r smaller than the width between the upper ends 43a of the adjacent chamfered portions 43, 43 in the fixing of the floor panel fixing 1 to the support 5, it is possible to utilize a floor panel having a diameter r larger than the joint width W₂The recessed portion for tool fitting formed in the head of the fastener 7 such as a screw can be reduced from being damaged by the countersunk screw of the disk-shaped head 71.

In addition, the diameter r of the head is greater than the seam width W in this way₂When the fixing member 7 such as a screw having a disk-shaped head is used to fix the floor panel to the support member, the head 71 of the screw 7 can be fitted into the space between the adjacent chamfered portions 43, and the head 71 of the fixing member 7 can be installed without cutting the side surface 40 of the floor panel 4 and without protruding from the surface of the floor panel 4.

Further, by bringing the inclined side face 71a of the head portion 71 of the anchor 7 into contact with the chamfered portions 43, the contact resistance with the floor panel 4 is further increased, and the movement of the floor panel 4 in the normal use state is more reliably prevented.

Drawings

The objects and advantages of the present invention will be understood by the following detailed description of the preferred embodiments, based on the accompanying drawings in which reference numerals are given to the respective components.

Fig. 1 shows a floor panel fastener according to an embodiment of the present invention, wherein (a) is a front view, (B) is a cross-sectional view taken along line B-B of (a), (C) is a plan view, and (D) is a perspective view.

Fig. 2 shows another embodiment of the floor fixing member of the present invention, in which (a) is a front view, (B) is a side view, (C) is a top view, and (D) is a bottom view.

Fig. 3 shows a modification of the floor fixing of fig. 1, in which (a) is a front view and (B) is a bottom view.

Fig. 4 shows another modification of the floor fixing of fig. 1, in which (a) is a front view and (B) is a bottom view.

Fig. 5 is an explanatory view of a state of use of the floor fixing of the present invention, wherein (a) shows a state before a screw as a fixing is driven, and (B) shows a state after the screw is driven.

Fig. 6 is an explanatory view of the floor panel fastener of fig. 2, (a), (B) show a difference in the moving direction of the floor panel and a difference in the action of the convex strip, (C) is an explanatory view of an example of construction of the floor panel fastener, and (D) to (F) are explanatory views of actions of the floor panel fastener in another example of construction.

Fig. 7 is an explanatory view showing a normal construction state of the floor.

Fig. 8 is an explanatory view of a conventional fixing method (fixing with nails) of the floor.

Fig. 9 is an explanatory view of a conventional floor fixing method, where (a) is an example of a floor fixing using a groove fitting having a flange, and (B) is an example of a floor fixing using a T-shape.

Fig. 10 is a perspective view of a conventional floor fixing (corresponding to fig. 8 (a) of patent document 1).

Fig. 11 is an explanatory view of the principle of fixing a floor panel by a conventional floor fixing (corresponding to fig. 10 (B) of patent document 2).

Description of the reference numerals

1 floor fixing piece

2 spacing piece

21 jack

22. 22' Rib

22a top (convex strip)

23(23a to 23d) side surface

24 deformation part

3 Lap joint slice

4 floor

Side surface of 40

41 groove

Inner wall of floor back side of 41a groove

42 back (of floor)

43 (43) chamfered part

43a upper end (of chamfer 43)

43b lower end (of chamfered portion 43)

5 bearing (joist)

6 short column

7. 7' fittings (screw, countersunk head screw)

71 head part

71a inclined side surface

9 setting surface (Foundation)

100 floor fixing piece

101 flange part

102 nail hole

103 jaw

110 floor fixing piece

111 strap

112 intermediate sheet

113 nail hole

Detailed Description

Embodiments of the present invention are described below with reference to the drawings.

(Structure of floor fixing member)

The floor fixing 1 of the present invention is formed by integrally forming a strap 3 and a spacer 2 in a cross-sectional shape, and the spacer 2 protrudes from an intermediate position in the width direction of the strap 3 in the front and back directions of the floor, using a synthetic resin material having flexibility, for example, a synthetic resin material having appropriate rigidity and flexibility, such as an ABS (acrylonitrile-butadiene-styrene copolymer) resin, polypropylene, polyethylene, vinyl chloride, nylon, and a glass fiber reinforced polypropylene (glass fiber length: 0.5 to 5 mm; glass fiber content: 10 to 40 parts by weight) (see fig. 1 (B)).

The spacer 2 is provided with insertion holes 21, the insertion holes 21 penetrate the spacer 2 in the projecting direction, the straps 3 are inserted into grooves 41 formed in the opposite side surfaces 40 of the floor boards 4 adjacently arranged, and the floor boards are arranged to have a constant joint width W by sandwiching the spacer 2 between the side surfaces 40 of the floor boards 4₂In this state, the floor fixing 1 is fixed to the support 5 such as a joist by driving (screwing) the fixing member inserted into the insertion hole 21, here, the so-called countersunk screw 7 having a disk-shaped head into the support 5, and the floor 4 is attached to the support 5 via the floor fixing 1 (see fig. 5 (a) and (B)).

In the embodiment shown in fig. 1, a plurality of ridges 22 are formed in a stripe shape in a direction perpendicular to the longitudinal direction of the floor side surface 40 of the spacer 2 on the side surface 23 of the spacer 2 of the floor fixing 1 which is in nipping contact with the side surface 40 of the floor panel 4, and the plurality of ridges 22 are arranged at predetermined intervals, and five ridges 22 are formed on one side surface 23(23a, 23 b; 23c, 23d) of the spacer 2.

The convex portion 22 may be formed on the entire portion of the side surface 23 of the spacer 2 which is in contact with the side surface 40 of the floor panel 4 (see fig. 1), or may be formed on a part thereof, for example, only one or both of portions (23b, 23d) of the side surface 23 which are located on the lower side of the overlapping flap 3 (see fig. 2), may be formed on one or both of portions 23a, 23c of the side surface 23 which are located on the upper side of the overlapping flap 3, or may be formed on any combination of the above side surfaces.

In the case where the convex portion 22 is provided on a part of the side surface 23 of the spacer 2, when the spacer 2 is held between the side surfaces 40 of the floor panel 4, the dimensions of the respective portions are adjusted so that the top of the convex portion 22 is brought into contact with the side surface 40 of the floor panel 4 on the side surface on which the convex portion 22 is formed, and the flat surface of the side surface is brought into contact with the side surface 40 of the floor panel 4 on the side surface on which the convex portion 22 is not formed.

In the embodiment shown in fig. 1, the ridge 22 is a relatively wide rectangular ridge in a plan view, and the top 22a thereof is flat (see fig. 1C), but a plurality of ridges 22 narrower than that in fig. 1 may be provided, or a plurality of ridges 22 having a triangular shape in which the top 22a is sharp in a plan view may be provided as shown in fig. 2, so that the side surface of the spacer 2 is formed in a zigzag shape as a whole, or a finer ridge 22 'may be formed at the top of the relatively wide ridge 22 as shown in fig. 3, and the ridge 22' having a sharp top in the drawing may be formed as long as it is formed in a direction perpendicular to the longitudinal direction of the floor panel 4 of the spacer 2, and the contact resistance with the side surface 40 of the floor panel 4 can be increased, and the ridge may have various shapes.

From the viewpoint of increasing such contact resistance, it is preferable to form the side surfaces of the spacer 2 in a zigzag shape by providing projecting strips 22, 22' having sharp top portions in a plan view as shown in fig. 2 and 3.

As shown in the enlarged view of fig. 2 (D), when the ridge 22 is formed in a zigzag shape by forming the crest 22a of the ridge 22 provided on the side surface of the spacer 2 into a sharp shape as described above, inequalities are formed from the bottom of the ridge 22 to the two sides of the crest 22 a. In other words, a triangle or the like constituted by one side in the vertical direction and the other side at an acute angle thereto may be continuously formed so that the top 22a of the convex strip 22 is offset on one side in the width direction of the convex strip 22.

An insertion hole 21 is provided in the spacer 2, and the insertion hole 21 penetrates the spacer 2 in the projecting direction.

In the embodiment of fig. 1, the upper end portion of the insertion hole 21 is formed in a tapered shape expanding upward, and the other portions of the insertion hole 21 are the same in diameter (see fig. 1 (B)). When the floor is fixed to the support by a screw having a disk-shaped head, a so-called countersunk screw, which is a fixing member 7 described later, a part of the inclined side face 71a formed on the head 71 of the countersunk screw enters the tapered upper end portion of the insertion hole 21.

Preferably, the height H (see fig. 1a and B) of the spacer 2 from the lower end of the later-described strap 3 to the upper end of the spacer 2 at the position where the insertion hole 21 is formed is substantially the same as the height H (see fig. 5 a) from the floor back side inner wall 41a provided in the groove 41 of the floor 4 to the lower end 43B of the chamfered portion 43 formed at both ends in the width direction of the floor surface. The chamfered portions 43, 43 are formed at least at the surface corner portions on the front surface side of the adjacent floor boards 4, 4 at the position where the spacer 2 is inserted in the floor boards.

With the above structure, if the diameter of the fixing piece is smaller than the width W between the upper ends 43a of the chamfered portions 43₃(refer to (B) of FIG. 5), the floor panel can be fixed to the support member by, for example, screws 7 having disk-shaped heads 71, and the diameter r of the disk-shaped heads 71 is larger than the width W of the joint as the interval between the sides 40 of the floor panel 4₂Thus, the tool fitting recess formed in the head of the screw 7 is not easily broken when the screw is screwed in, and the disk-shaped head 71 of the screw 7 can be fitted into the space between the chamfered portions 43, 43 without protruding from the surface of the floor when the screw 7 is fixed.

Further, since the installation is performed in a state where the inclined side face 71a formed by the head 71 of the screw 7 is in contact with the chamfered portions 43, 43 and the chamfered portions 43, 43 are formed at least at the positions where the adjacent floor boards 4, 4 are inserted into the spacer 2 (see fig. 5B), the contact resistance between the floor board 4 and the floor fixing member 1 by the screw 7 can be further increased by the contact of the inclined side face 71a of the screw 7 with the floor board 4.

In the embodiment shown in fig. 1, as shown in the front view of fig. 1 (a), the upper end of the spacer 2 is formed in a shape of an oval notch arc with an arc that is raised at the center and has both ends in the width direction, and the entire shape is formed in an oval notch arc shape with an arc that is raised at the center, but the shape of the floor fixing member 1 is not limited thereto, and the upper end of the spacer 2 may be formed in a shape of a trapezoid, for example, in which the height is the same at any position, or in which the height is high at the center and both. Further, a portion corresponding to the upper end tapered portion of the insertion hole in fig. 1 (B) may be cut out entirely or partially to form a shape in which the central portion is recessed as shown in fig. 2 (a).

Further, as shown in fig. 4, for example, V-shaped deformed portions 24 extending outward from the end edges of the spacer 2 may be provided at both ends of the spacer 2 in the width direction.

The maximum width of the deformed portion 24 may be larger than the thickness of the spacer 2 in the state before the floor fixing 1 is installed, but after the deformation occurs during the installation, the deformed portion 24 has deformability without limiting the degree of the sandwiching contact between the side surface 40 of the floor panel 4 and the side surface of the spacer 2.

The spacer 2 formed as described above intersects the strap 3 at the center in the width direction of the strap 3 having a substantially rectangular shape in plan view, and the floor fixing 1 as a whole is formed in a cross shape as shown in the side cross-sectional view of fig. 1 (B).

The overlapping flap 3 may be formed in a flat shape as shown in fig. 2 having a constant thickness as a whole or in a shape having ribs at the peripheral portion as shown in fig. 1 as long as it can be inserted into the groove 41 formed in the side surface 40 of the floor panel 4, and may be provided with a convex strip similar to the above-described spacer at a portion of the overlapping flap 3 contacting the inner wall surface of the groove 41 of the floor panel 4.

The height L from the lower end of the spacer 2 to the lower end of the strap 3 (see fig. 1a and B) may be the same as the height L from the back surface of the floor 4 to the floor back surface side inner wall 41a of the groove 41 (see fig. 5 a), but is preferably slightly lower than the height L.

The maximum thickness of the strap 3, that is, the thickness of the peripheral portion of the strap 3 in the embodiment of fig. 1, may be the same as the width of the groove 41 formed in the side surface 40 of the floor panel 4, and the strap 3 may be press-fitted into the groove 41, or may be smaller than the width of the groove 41, and the strap 3 may be movably fitted into the groove 41.

When the spacer 2 is sandwiched between the side surfaces 40 of the floor panel 4, the dimension of the strap 3 is formed so that the strap 3 does not interfere with the inner wall of the floor panel 4 existing at the deepest portion of the groove 41.

The floor panel fixing 1 formed as described above fixes the floor panel to the support member 5 by means of the fixing member 7, preferably by means of a screw with a disk-shaped head, a so-called countersunk screw, as the fixing member 7.

The screw 7 of the floor fixing 1 as a fixing member is formed to be elongated with respect to the full height of the spacer 2, and the thickness of the portion other than the head portion 71 can be inserted into the insertion hole 21 formed in the spacer 2 so that the depth of driving into the supporting member 5 can be secured.

(construction method and action)

As shown in fig. 5 (a) and (B), according to the floor fixing 1 of the present invention configured as described above, the strap 3 is inserted into the grooves 41 formed in the respective opposite side surfaces 40 of the floor panels 4 disposed adjacent to each other, and the spacer 2 is sandwiched between the side surfaces 40 of the floor panels 4, so that the side surfaces 40 of the floor panels 4 are in contact with the side surfaces 23 of the spacer 2.

When the floor fixing 1 has the deformed portion 24 shown in fig. 4, the interval between the floor panels 4 is adjusted so that the side surface 40 of the floor panel 4 is brought into press contact with the side surface 23 of the spacer 2 by the deformation of the deformed portion 24.

By the work, the joint formed between the floor boards 4 is wideDegree W₂Is positioned to a certain width by the wall thickness of the spacing sheet 2, and can be in the width W of the joint₂The floor 4 is laid in a neat and beautiful state.

When the screws 7 inserted into the insertion holes 21 are driven into the support 5 in this state, the lower end of the spacer 2 is pressed against the support 5, and the back surface of the strap 3 is pressed against the floor back surface side inner wall 41a of the groove 41, whereby the floor 4 is fixed to the support 5 via the floor fixing 1.

In this way, the floor panel 4 can be fixed at a plurality of positions at predetermined intervals, for example, at intervals of about 450mm in the longitudinal direction of the floor panel 4, in accordance with the arrangement intervals of the supports 5 such as joists.

In contrast to the conventional T-shaped fastener (see fig. 9 (B)), in which the floor panel fastener 1 is not directly fixed to the floor panel 4 by nails, screws, adhesives, or the like, but is fixed by the press-contact of the back surface of the strap 3 with the inner wall 41a on the back surface side of the floor panel of the groove 41 and the press-contact of the side surface 40 of the floor panel 4 with the side surface of the spacer 2, the structure of the floor panel fastener 1 is such that the spacer 2 is also provided above the strap 3, thereby increasing the contact area between the side surface 40 of the floor panel 4 and the floor panel fastener 1 and increasing the contact resistance.

In the embodiment of fig. 5, since the side surface 23 of the spacer 2 is formed with the ridge extending in the longitudinal direction of the spacer, that is, the ridge 22 extending in the direction perpendicular to the groove longitudinal direction of the side surface of the floor panel 4, the contact resistance between the side surface 23 of the spacer 2 and the side surface 40 of the floor panel 4 is also increased.

Further, in the fixing of the floor fixing 1, the joint width W is made larger by the foregoing dimension having a diameter larger than the joint width W₂When the countersunk head screw 7 of the head 71 is used for fixing a floor on a support, the inclined side face 71a of the head 71 of the countersunk head screw is pressed against the chamfered parts 43, 43 formed at the upper end corner of the floor 4 as the countersunk head screw 7 is screwed in, so that the inclined side face 71a of the head 71 of the countersunk head screw and the ground are usedThe contact resistance of the plate 4 also restricts the movement of the floor 4.

Further, the V-shaped deformation portions 24 are provided at both ends in the width direction of the spacer 2, and according to this configuration, the side surfaces 40 of the floor panel 4 are pressed by the force to be elastically restored by the deformation portions 24, and when the floor panel 4 is about to move in the longitudinal direction, the tip end portion of the deformation portion moves together with the floor panel, and one of the deformation portions 24 expands outward, so that the contact resistance against the side surfaces 40 of the floor panel 4 is further increased.

Therefore, in a state where the floor panel 4 is in contact with the floor fixing 1, a force sufficient to fix the floor panel 4 without moving is generated with respect to a load or force applied in a normal use state where a person walks on the floor panel 4.

On the other hand, if the floor panel 4 expands or contracts with a change in air temperature or humidity, for example, and the size of the floor panel 4 itself changes, and an extremely strong force is generated to move the contact position with the floor panel fixing member 1, the floor panel 4 can be allowed to move because the floor panel 4 and the floor panel fixing member 1 are not directly fixed by the aforementioned nails, screws, adhesives, or the like.

As a result, even if the floor panel 4 undergoes dimensional change accompanying such expansion or contraction, the floor panel fastener 1 can be effectively prevented from being damaged, the screw 7 for fixing the floor panel fastener 1 to the support member 5 can be prevented from coming off, and deformation such as bending or twisting of the floor panel 4 can be prevented.

In addition, as shown in fig. 2, the sharp-pointed top portion 22a is biased to either side of the width direction of the convex strip 22, and in the floor panel fastener 1 provided with such a convex strip 22, when the convex strip 22 of the floor panel fastener 1 contacts the side surface of the floor panel 4 as shown in fig. 6 (a) and (B), the force generated by the floor panel fastener 1 to restrict the movement of the floor panel 4 is as follows: the force for restricting the movement of the floor 4 in the direction of the arrow a shown in fig. 6 (a) is stronger than that in the case of restricting the movement of the floor 4 in the direction of the arrow B shown in fig. 6 (B).

That is, in the above example, as shown in fig. 6 (a), when the floor panel 4 moves in the direction of the arrow a in the figure, the top portions 22a of the convex strips 22 of the floor fixing 1 formed of a flexible material are pulled by the movement of the floor panel 4 to be deformed to expand outward as shown by the arrow a in the figure. As a result, the deformation of the ridge 22 increases the contact resistance with the side surface 40 of the floor panel 4.

On the other hand, as shown in fig. 6 (B), when the floor panel 4 moves in the direction of arrow B in the figure, the top 22a of the convex strip 22 of the floor fixing 1 formed of a flexible material is pulled by the movement of the floor panel 4 to be deformed so as to be narrowed inward as shown by arrow B in the figure. As a result, when the convex strip 22 having the above-described shape is provided, the movement of the floor panel 4 in the arrow B direction is restricted relative to the movement of the floor panel 4, and the movement of the floor panel 4 in the arrow a direction is more firmly restricted by the floor panel fastener 1.

As described above, the floor panel fixing 1 shown in fig. 2 has different restriction forces for restricting the movement of the floor panel 4 depending on the direction, and for example, as shown in fig. 6 (C), the floor panel fixing 1(1a to 1d) is alternately arranged in the opposite direction at predetermined intervals in the longitudinal direction of the floor panel 4, and when the floor panel 4 moves in the direction of the arrow a in fig. 6 (a), the floor panel fixing 1a and 1C more firmly exert the movement restriction action, whereas when the floor panel 4 moves in the direction of the arrow B in fig. 6 (B), the floor panel 4 can be prevented from moving in any one of the longitudinal directions by the floor panel fixing 1B and 1d more firmly exerting the movement restriction action.

For example, as shown in fig. 6D, the floor panel 4 may be configured such that the floor panel fixing members 1(1a, 1b) are attached in a state where one end in the longitudinal direction of the floor panel 4 abuts against a cross member or the like to restrict the movement thereof, so that a force of restricting the movement of the floor panel 4 in a direction away from the cross member is increased.

In addition, as shown in fig. 6 (D), when the floor panel 4 and the floor fixing 1(1a, 1b) are installed, even if an unexpected strong force acts on the floor panel 4 and the floor panel 4 is accidentally moved in a direction away from the cross member, the floor panel 4 can be automatically restored to the original position in which one end is butted against the cross member.

That is, as shown in fig. 6 (E), when the floor panel 4 in a state where one end is separated from the cross member is expanded and deformed to increase in size, the floor panel fastener 1a is weaker in force to restrict the movement than the floor panel fastener 1 b. Therefore, as shown by a broken line in fig. 6 (E), the floor panel 4 is expanded in such a manner that the beam-side end portion approaches the beam.

On the other hand, when the floor panel 4 contracts and decreases in size, the floor panel 4 can automatically return to the original position (position during construction) in which the floor panel 4 abuts against the cross member along with expansion or contraction of the floor panel 4, because the floor panel fastener 1b is weaker than the restraining force of the floor panel fastener 1a, and the floor panel deforms so that the right end portion in the drawing contracts.

Accordingly, the claims hereof are not to be limited to the specific forms of apparatus, devices, machines, means, or processes and methods disclosed herein. The claims are intended to protect the core or nature of the epoch-making invention. The invention is clearly novel and advantageous.

Further, in carrying out the present invention, it will be apparent to those skilled in the art that the present invention is not based on the prior art, and the present invention is an invention that is an inventive development in the art in view of the technical leap achieved by the present invention. The claims to this invention should be interpreted very broadly, in order to protect the core of the invention by law.

Therefore, as described above, since the object of the present invention is obviously and efficiently achieved according to the above description, and since the structure can be modified to a certain extent without departing from the scope of the present invention, the whole contents contained in the above description or the drawings are not limited but exemplified. The appended claims are to encompass within their scope all such features of the invention as are within the broad general meaning and as are inherent to the invention, and all such other statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

The present invention has been described above.

Claims (8)

1. A floor fixing member for fixing a floor, the floor having grooves formed in the length direction on the side surfaces at both ends in the width direction, respectively, the floor fixing member being characterized in that,

forming a lap joint sheet and a spacer sheet of a flexible synthetic resin material, the lap joint sheet being inserted into the grooves formed on the respective side surfaces of two floor boards adjacently disposed so as to lap-joint the two floor boards adjacently disposed; the spacer is protruded from the middle position of the overlapping piece in the width direction to the front and back directions of the floor boards and is clamped between the side surfaces of two floor boards which are adjacently arranged,

an insertion hole penetrating the spacer in the protruding direction is formed in the spacer, and an upper end portion of the insertion hole is formed in a tapered shape expanding upward,

and a plurality of convex strips which are in a strip shape along the direction vertical to the length direction of the side surface of the floor are formed on the side surface of the spacing piece which is contacted with the side surface of the floor,

a fixing member having a disk-shaped head is inserted into the insertion hole of the spacer so that an end portion of the strap is pressed against an inner wall of the floor formed in the groove of the floor, an inclined side surface formed under a head portion of the fixing member is in contact with a lower end and an upper end of a chamfered portion of a side surface of the floor on the same plane, a diameter of the disk-shaped head of the fixing member is smaller than a width between upper ends of the chamfered portion of the floor and larger than a seam width determined by a wall thickness of the spacer, the chamfered portion is formed at least at a corner portion of adjacent widthwise both ends on the side of the floor surface at a position where the spacer is inserted in the floor,

the height from the lower end of the strap to the upper end of the spacer at the insertion hole forming position is substantially the same as the height from the floor back side inner wall formed in the groove of the floor to the lower end of the chamfered portion.

2. The floor fixing according to claim 1, wherein the top of each of the convex strips is formed in a triangular shape composed of one side in a vertical direction and the other side at an acute angle to the one side, which are arranged in parallel, and the triangular shape is continuously formed so that the side surfaces of the spacer are formed in a zigzag shape, in a plan view.

3. The floor fixing according to claim 2, wherein a top of each of the ribs is offset to one side in a width direction of the rib.

4. The floor fixing of claim 1, wherein a length from a lower end of the overlapping flap to a lower end of the spacer is slightly shorter than a height from a back surface of the floor panel to an inner wall of the groove on a back surface side of the floor panel.

5. The floor fixing according to claim 1, wherein the fixing inserted into the insertion hole is any one of a screw, a nail and a screw having a disk-shaped head.

6. The floor fixing according to claim 1, wherein the strap and the spacer are integrally formed in a cross-sectional shape by using a mixed resin material of one or more selected from the group consisting of ABS resin, polypropylene, polyethylene, vinyl chloride, nylon, and glass fiber reinforced polypropylene in which a glass fiber length is 0.5 to 5mm and a glass fiber content is 10 to 40 parts by weight.

7. The floor fixing of claim 1, wherein the protruding length of the overlapping flap is formed as: when the spacer is clamped between the side surfaces of the floor panel, the overlapping pieces do not interfere with the inner wall of the deepest part of the groove.

8. The floor fixing according to claim 1, wherein a plurality of ribs are formed in a stripe shape on a portion of the overlapping flap which contacts with an inner wall surface of the groove of the floor.