JP6595237B2 - Joint structure of elastic washer and wood - Google Patents

Description

  The present invention relates to an elastic washer in which a flat washer base and an elastic tool such as a spring spring or a leaf spring are stacked, and a wood joining structure using the elastic washer.

  When joining wooden structures, through holes were provided in both members, and nuts were screwed and tightened through bolts. In this case, a washer (spring washer and spring washer) to prevent the nut and bolt heads from sinking into the wood. Was intervening.

In this case, the nut, the washer and the spring must be passed through the bolt shaft, respectively, and in consideration of work efficiency, when a claw is provided on the plain washer and the spring is caulked and fixed (Patent Documents 1 and 2), Moreover, the nut, the spring, and the flat washer are fixed in advance (Patent Document 3), and have been devised so that they can be handled integrally.
Also, in this case, the caulking and caulking work are troublesome on the side of the plain washer, and the free expansion and contraction of the spring is restricted at the caulking position. There was a fear. Also, due to fixation such as welding, there is a problem that the properties of the material change or the surface discolors due to heating, and when welding at multiple locations, as with caulking, There was a risk of excessive stress.

  So, without using caulking or welding, a proposal was made to put a flat washer, a spring and a nut on top of each other and cover the entire outside with a film (Patent Document 4), a device to pass the film through the inside of the spring or the flat washer, that is, the bolt hole Has also been proposed (Patent Document 5).

Japanese Utility Model Publication 3-72110 Design Registration No. 1378933 JP 2005-282020 A JP-A-2-180126 Japanese Patent Laid-Open No. 11-247826

  In the case of a structure in which a plain washer, a spring and a nut are overlapped and covered with a film as in Patent Document 4, since the nut is covered with a film, when tightening the nut, use a wrench from the top of the film. When the nut is tightened, the wrench cannot be fitted to the nut when the film is thick, and it is necessary to break the film to expose the nut. Also, even if the film is thin and the wrench can be fitted into the nut, if the nut is tightened as it is, the film will be torn with the rotation of the nut, the torn film after construction will be unsightly, and eventually the film may be peeled off entirely There were problems.

  In addition, as in Patent Document 5, when a film is passed through a bolt hole of a spring or a plain washer, when a nut is tightened, the bolt shaft also rotates slightly, so that eventually the film is broken, and after the construction There was a problem that the film that was torn was unsightly.

  Since the present invention covers the outer periphery of the plain washer and the spring with a film without including a nut, the bolt head or nut is inserted so that the bolt shaft is inserted into the upper opening and the lower opening of the film so that the film is not torn. The above problem was solved.

That is, the present invention is configured such that an elastic tool having a bolt insertion portion is stacked on a flat plate washer substrate having a bolt hole in a state where the bolt hole and the bolt insertion portion are communicated with each other, and is configured as follows. It is a characteristic elastic washer.
(1) The elastic washer does not include a nut, and the washer substrate and the elastic tool are combined in a relatively movable state.
(2) At least the outer peripheral side of the washer substrate and the outer peripheral side of the elastic tool are covered with a common film so that the washer substrate and the elastic tool maintain a relative position. The film was adhered to the tool.
(3) In the film, an upper opening is formed corresponding to the bolt insertion portion on the upper side of the elastic tool, and a lower opening is formed corresponding to the bolt hole on the lower surface side of the washer substrate. Each of the opening and the lower opening has a structure in which a shaft of a bolt to be used can be inserted.
(4) The film is configured such that when the head of a nut or bolt is attached and tightened, the film does not twist.

In another invention, an elastic tool having a bolt insertion portion is stacked on a flat washer substrate having a bolt hole in a state where the bolt hole and the bolt insertion portion are in communication with each other, and a part thereof is formed of a film. An elastic washer having the following structure.
(1) The elastic washer does not include a nut,
(2) At least the outer peripheral side of the washer substrate and the outer peripheral side of the elastic tool are covered with a common film so that the washer substrate and the elastic tool maintain a relative position. The film was adhered to the tool.
(3) In the film, an upper opening is formed corresponding to the bolt insertion portion on the upper side of the elastic tool, and a lower opening is formed corresponding to the bolt hole on the lower surface side of the washer substrate. Each of the opening and the lower opening has a structure in which a shaft of a bolt to be used can be inserted.
(4) The elastic device is structured as a spring spring formed at least one round, and the upper portion of the elastic device can be accommodated in the bolt insertion portion of the elastic device when pressed against an elastic force. .

In the above, the elastic washer is configured as follows.
(1) Expose the upper end of the elastic tool from the upper opening, expose the periphery of the bolt hole of the washer board from the lower opening,
(2) In the film, the upper opening was formed larger than the minimum diameter of the bolt insertion portion, and the lower opening was formed larger than the bolt hole.
(3) The film was formed so as not to contact the head of the nut or bolt to be used in a state where the nut or bolt was attached and the elastic tool was not pressed.

In another aspect of the invention, when the first wood and another member are joined, an elastic washer is attached to the shaft of the bolt that penetrates the first wood from the other member side, and is configured as follows. This is a wood joining structure characterized by the above.
(1) An elastic washer was constructed as follows.
(a) An elastic tool having a bolt insertion part is connected to a flat washer board having a bolt hole in a state where the bolt hole and the bolt insertion part are communicated with each other , and the washer board and the elastic tool are relatively Combined in a freely movable state and stacked .
(b) at least the outer peripheral side of the washer substrate, an outer peripheral side of the elastic member, and covered by a common film, and the washer substrate wherein as the elastic member is kept a relative position, and said washer substrate wherein The film was adhered to the elastic tool.
(c) In the film, an upper opening was formed on the upper side of the elastic tool so as to correspond to the bolt insertion portion, and a lower opening was formed on the lower surface side of the washer substrate in correspondence with the bolt hole.
(2) the bolt axis of the first bolt protruding from the timber, and mounting the elastic washer in a state coated with the film, the the upper opening and lower opening is penetrated through the bolt axis, and the said elastic washer A washer substrate was adhered to the surface of the first wood.
(3) by tightening the head or nut of the bolt to form a cemented structure of the timber, said film, when tightened the head or nut of the bolt, the film is not broken, and the film, When the bolt head or the nut is mounted and tightened, the film is not twisted.

The elastic tools in the above are mainly spring springs (coil springs), leaf springs, etc., and materials conventionally used with plain washers can also be used.
Moreover, although the film in the said is a thin film-like material and assumes various resin films, it can also be comprised from aluminum foil and another material, if it has the same function.

  This invention does not include a nut, and only the outer periphery of a washer substrate (so-called plain washer) and an elastic tool (so-called spring) is covered with a film, so the nut, bolt head, and bolt shaft do not touch the film. The washer substrate and the elastic tool can be installed together on the bolt shaft, and the construction efficiency can be increased. Moreover, a bolt and a nut can be mounted | worn with the state coat | covered with the film, without carrying out the operation | work which peels a film, and a nut can be tightened. At this time, since the upper opening edge and the lower opening are formed in the film, the nut can be tightened without breaking the film.

In this embodiment of the present invention, (a) is a plan view, (b) is a left side view, (c) is a front view, (D) is a right side view, (e) is a bottom view, and (f) is a rear view. Represents. (A) is AA sectional drawing of Fig.1 (a), (b) is BB sectional drawing, (c) is a perspective view of a plane side, (D) represents a perspective view of a back side. In the embodiment, in a state before coating the resin film, (a) is a plan view, (b) is a left side view, (c) is a front view, (D) is a right side view, and (e) is a bottom view. (F) represents a rear view. In the state of use of the elastic washer of the present invention, (a) is a perspective view before attaching the nut, (b) is a perspective view of the state where the nut is tightened, and (c) is an enlarged longitudinal sectional view of the state where the nut is tightened. To express. In the embodiment of the present invention, in another example using a flat washer, (a) a plan view, (b) a longitudinal sectional view, (c) a front view, (D) a right side view, (e) A bottom view, (f) represents a perspective view. In an embodiment of the present invention, in another example using another spring spring and a flat washer, (a) a plan view, (b) a longitudinal sectional view, (c) a front view, (D) a right side view, ( e) is a bottom view, and (f) is a perspective view. In an embodiment using another elastic tool of the present invention, (a) shows a plan view and a front view, and (b) shows another front view. In an embodiment using another elastic tool of the present invention, (a) is a plan view and a front view, (b) is another plan view and a front view, and (c) is another front view. In an embodiment using another elastic tool of the present invention, (a) is a plan view and (b) is a front view. In an embodiment using another elastic tool of the present invention, (a) shows a plan view and a front view, and (b) shows another front view. In an embodiment using another elastic tool of the present invention, (a) shows a plan view and a front view, and (b) shows another plan view and a longitudinal sectional view.

  Embodiments of the present invention will be described with reference to the drawings.

1. Configuration of elastic washer 30

(1) Washer board 1
An outer diameter L ₁ of the disk-shaped (plane circular), form a bolt hole 5 of diameter D ₁ in the center, to form the washer substrate 1 (FIG. 3, FIG. 1). In the washer substrate 1, a straight line (diameter) passing through the center of the bolt hole 5 is a line intersecting the outer peripheral edge of the washer substrate 1, and the shortest distance, that is, the washer substrate 1 is circular, and thus has a diameter L ₁ .
In this washer substrate 1, there is no cross-sectional defect such as formation of a recess or projection for welding and a notch for a cut-and-raised claw, so that the washer substrate 1 can be formed with as small an area as possible. In relation to the bolt hole 5 on the design standard,
(Diameter _L 1 of the washer substrate 1) = (diameter of the bolt hole _{D 1)} × 3
(Area _S 1 of the washer substrate 1) = 10 × (area of the bolt hole 5)
It can be set in the vicinity.
However, considering the more secure, in relation to the diameter D ₁ of the bolt holes 5,
(Diameter D ₁ of bolt hole 5) × 3 <L ₁ <(diameter D _{1 of} bolt hole) × 4
Is preferred. Moreover, in relation to the area of the bolt hole 5,
Area of bolt hole 5 = π × (D ₁ ÷ 2) ²
The area S _{1 of} the washer substrate 1 with no bolt holes 5
= Π × (L ₁ ÷ 2) ²
So
10 × (D ₁ ) ² <(L ₁ ) ² <12 × (D ₁ ) ²
The degree is safe.

(2) Spring spring 10 (coil spring, elastic tool)
A wire rod having a circular cross section is bent to form a conical spring spring 10 having a spiral shape and a thin tip (FIGS. 3 and 1). The spring spring 10 is formed in the order of “1 turn (360 °) +0.8 turn (185 °)” (= 1.8 turns), and the outer diameter of the lower portion 12 (the portion placed on the washer substrate 1) is L _16. in inner diameter are formed by _{L 15.} The reduced upper portion 11 is formed with an outer diameter L ₁₁ and an inner diameter L ₁₀ .
L ₁₁ <L ₁₅
When the spring spring 10 is pressed, the upper part 11 is accommodated inside the lower part 12 and has a height about the cross section of the wire.
The space inside the spring spring 10 formed by the lower inner diameter L ₁₅ and the upper inner diameter L ₁₀ forms the bolt insertion portion 13.

(3) A spring spring 10 is placed on the upper surface 2 of the washer substrate 1 formed in this way, and the bolt holes 5 of the washer substrate 1 and the axes of the bolt insertion portions 13 of the spring spring 10 are aligned (FIGS. 3 and 1). ). In this state,
Outer diameter D ₁₆ of spring spring 10 <outer diameter L _{11 of} washer substrate
Therefore, the spring spring 10 does not protrude from the outer peripheral edge 4 of the washer substrate 1 in a plan view (FIGS. 3A and 3E and FIGS. 1A and 1E). At this time, the spring spring 10 and the washer substrate 1 are not welded or bonded.
In this state, if a colorless and transparent cylindrical film original plate (not shown) is disposed on the lower outer peripheral side of the spring spring 10 and the outer peripheral side of the washer substrate 1, and heated, the original film shrinks and the spring A film 20 is formed in close contact with the outer shape of the spring 10 and the washer substrate 1. The film 20 forms a lower opening edge 22 having a diameter L ₂₁ sufficiently larger than the bolt hole 5 on the lower surface 3 side of the washer substrate 1. At this time, the lower surface 3 of the washer substrate 1 inside the lower opening edge 22 forms the lower exposed portion 6 (FIGS. 3A and 3E and FIGS. 1A and 1E).
Further, the film 20 covers only the lower portion 12 of the spring spring 10, and the upper end portion of the spring spring 10 is exposed to form the upper exposed portion 14, and the periphery of the upper exposed portion 14 is the diameter L _{20 of the} film _20. The upper opening edge 21 is formed (FIGS. 3A and 3E and FIGS. 1A and 1E).
Although the film 20 is optional, for example, a material such as polystyrene or polyester is used.

(4) The elastic washer 30 is configured as described above (FIGS. 1 and 2). In this state, the elastic washer 30 maintains the relative position of the spring spring 10 and the washer substrate 1, and the relative position does not change in a normal use state such as transportation.
In addition, since there is no cross-sectional defect other than the bolt hole 5 such as a cut and raised claw on the washer substrate 1, the required area required for the washer can be further reduced.

2. Use of elastic washer 30

(1) The elastic washer 30 is used in the same manner as a normal spring washer. For example, it is used when the anchor bolt 33 is fixed to the base 34.

(2) A foundation (first wood) 34 is placed on a concrete foundation (other member) 32, and an anchor bolt 33 having a lower portion embedded in the concrete foundation 32 penetrates the foundation 34 to form the foundation 34. It protrudes from the upper surface 35 of Fig. 4 (a).
The elastic washer 30 is placed on the top surface of the base by passing the bolt hole 5 and the bolt insertion part 13 of the elastic washer 30 from the upper end of the anchor bolt 33. At this time, the washer substrate 1 and the spring spring 10 are kept covered with the film 20, and the washer substrate 1 and the spring spring 10 can be installed together at one time (FIG. 4A).
Subsequently, the nut 36 is inserted from the upper end of the anchor bolt 33, screwed, and brought into contact with the upper surface of the elastic washer 30 (FIG. 2B). In this state, since the upper opening edge 21 of the film 20 is formed larger than the maximum outer diameter of the nut 36, the nut 36 contacts only the upper exposed portion 14 of the spring spring 10, and the nut 36 touches the film 20. There is nothing (FIG. 2 (b), FIG. 4 (c)).

(3) In this state, if the nut 36 is tightened in the same manner as usual, the spring spring 10 contracts while being lightly pressed by the film 20, so that the washer is tightened while the nut 36 is tightened while exhibiting the performance of the spring spring 10. The spring spring 10 can be prevented from shifting on the upper surface 2 of the substrate 1.
Further, as the spring spring 10 is pressed, the vicinity of the upper opening edge 21 of the film 20 moves away from the spring spring 10, but the upper opening edge 21 is in the initial position and is positioned outside the nut 36. There is no risk of being caught in the wire (FIG. 4C).
Further, the vicinity of the lower opening edge 22 of the film 20 is fastened while being sandwiched between the lower surface 3 of the washer base 1 and the upper surface 35 of the base 34, so that the spring spring 10 moves closer to and away from the washer substrate 1 as tightened. However, even if the film 20 is in a floating state, the film does not fall.

(4) When the tightening of the nut 36 with a predetermined strength is completed, the joining structure 40 of the present invention is configured (FIGS. 4B and 4C).

(5) The elastic washer 30 can be used in the same manner at a position where a so-called “spring washer” is conventionally used at a joining position of wood (first wood) and wood (other member). Therefore, as a bolt, in addition to the anchor bolt 33, it can be applied to a normal bolt shaft, a bolt shaft of a battledore bolt, and the like (not shown).

3. Other configurations of the washer substrate 1 and the film 20 of the elastic washer 30

(1) In the said embodiment, although the disk was used as the washer board | substrate 1, if it is the material normally used as a plain washer, it can be used, for example, it is an octagonal washer board which notched the corner | angular part in square. (FIGS. 5 and 6) or squares, pentagons, hexagons, regular octagons, etc. (not shown) without corners notched.

(2) In the above-described embodiment, the washer substrate 1 can be a structure having a function as a normal so-called flat washer, and is generally a flat structure. For example, a bent structure or a surface irregular shape may be used (not shown).

(3) Also. In the above-described embodiment, the film 20 is colorless and transparent. However, the film 20 may be made of a material having a certain degree of translucency or a material having no translucency, and the color is arbitrary. In addition, a logo or a pattern can be displayed on the surface (not shown).
In addition, the film 20 is a thermosetting material and is made of a material that is hard to some extent while being in close contact with the spring spring 10 and the washer substrate 1, but a soft material that is elastic to some extent while being in close contact with the spring spring 10 and the washer substrate 1 is used. (Not shown).

(4) In the above-described embodiment, the upper opening edge 21 and the lower opening edge 22 have a sufficiently large shape as compared to the nut 36 (or the head of the bolt) to be used, and the film 20 touches the nut 36. Since the structure has no structure, it is possible to reliably prevent the film 20 from being torn during tightening. However, the structure in which the vicinity of the upper opening edge 21 of the film 20 that is separated from the spring spring at the time of tightening slightly touches the nut 36 or the head of the bolt. Permissible. In this case, since the film 20 is not twisted, the film is not torn.

(5) Moreover, although the upper opening edge 21 and the lower opening edge 22 of the film 20 were formed larger than the nut 36 and bolt head to be used, the upper opening edge 21 is inserted into the bolt of the spring spring 10 depending on the required performance. The lower opening edge 22 can be formed to the same degree as the bolt hole 5 of the washer substrate 1 (not shown).
Further, depending on the required performance, the upper opening edge 21 and the lower opening edge 22 can be formed in the same size as a bolt shaft (not shown). This is because even if the film 20 touches the bolt shaft, the rotation of the bolt shaft may not be transmitted to the film 20.
Furthermore, depending on the required performance, the upper opening edge 21 and the lower opening edge 22 may be formed by notches that allow the bolt shaft to be used to be inserted (not shown). This is because even if the film 20 touches the bolt shaft, the rotation of the bolt shaft may not be transmitted to the film 20.

(6) In the above embodiment, the spring spring 10 is placed on the upper surface 2 of the washer base 1 and is relatively movable so as to cover the film 20, and movement is restricted after coating. However, the spring spring 10 and the washer base 1 can be engaged or fixed within a range in which the performance of the spring spring is not reduced. For example, spot welding can be performed at one place, bonding can be performed, and the protrusion and the recess can be engaged (not shown). In this case, the manufacturing efficiency can be increased.

3. Other configurations of the elastic member 10 of the elastic washer 30

(1) In the said embodiment, the rectilinear part 15 is formed in a lower end with the conical spring spring 10, the contact area of the lower surface of the spring spring 10 and the upper surface 2 of the washer board | substrate 1 is increased, and the spring spring 10 and a washer board | substrate are increased. 1 can also be achieved (FIG. 6).

(2) In the above-described embodiment, the conical spring spring 10 having a slightly smaller number of turns (about 75 °) than the second turn is used, so that the repulsive force of the spring is further secured and the film is formed on the upper portion 11 of the spring spring 10. Although the upper exposed portion 14 without 20 can be formed with a sufficient area, the number of turns of the spring spring 10 is arbitrary. However, in order to secure the upper exposed portion 14 and ensure the integrity of the spring spring 10 and the washer substrate 1 with the film 20, at least one round is desirable.

(3) Although the spring spring 10 has a circular cross section, the spring spring 10 may have other shapes such as an oval cross section, a square cross section, a rhombus cross section, and a cross section rectangle (not shown).

(4) In the above-described embodiment, the conical spring spring 10 that narrows in the direction away from the washer substrate 1 is used. However, the spring spring 10 that has a large diameter in the direction away from the washer substrate 1 and the upper and lower ends are provided. It is also possible to use a spring spring 10 having a large diameter and a small diameter at the center, and a “coil type” spring spring 10 having a small diameter at the upper and lower ends and a large diameter at the center. Further, it is possible to use a cylindrical spring spring 10 having a uniform diameter at the top and bottom (none of which is shown).

(5) Moreover, in the said embodiment, although the spring spring 10 was used as an elastic tool, the spring of another structure, for example, leaf spring 10A, can also be used (FIGS. 7-10).
A flat quadrangular (rectangular) leaf spring 10A formed so as to protrude upward is formed with a through hole in the center portion to form a bolt insertion portion 13. The plate spring 10A is placed on a rectangular washer substrate 1 having an outer peripheral edge 4 larger than the plate spring 10A, and is covered with a film 20 to constitute an elastic washer 30 (FIG. 7A). The film 20 forms an upper opening edge 21 around the bolt insertion portion 13, and an inner side of the upper opening edge 21 forms an upper exposed portion 14 of the leaf spring 10 </ b> A. The upper exposed portion 14 (upper opening edge 21) is configured to be larger than the nut to be used.
Further, two flat rectangular (rectangular) leaf springs formed so as to be convex upward are used as leaf spring pieces 10a and 10a, and the leaf spring pieces 10a and 10a are stacked on the concave side to form a leaf spring 10A. The elastic washer 30 can also be configured by placing the leaf spring 10A on the washer substrate 1 and closely contacting the film 20 (FIG. 7B).

(6) Further, as another leaf spring 10A, a material having a conical shape with an upper portion cut and a through hole provided in the cut portion to form the bolt insertion portion 13 can be used. Similarly, the leaf spring 10A is placed on the washer substrate 1, and the film 20 is adhered to form the elastic washer 30 (FIG. 8A).
It is also possible to use a leaf spring 10A having a conical outer shell shape in which the upper portion is cut, a flat surface 16 is formed in the cut portion, and a through hole is provided in the central portion of the flat surface 16 to form a bolt insertion portion 13. Yes (FIG. 8B). Similarly, the leaf spring 10A is placed on the washer substrate 1, and the film is adhered to form an elastic washer 30 (FIG. 8B).
In the elastic washer 30 using the leaf spring 10A, when the nut 36 is tightened by being attached to the shaft of the bolt 33, the outer peripheral edge of the lower end of the leaf spring 10A contacting the upper surface 2 of the washer substrate 1 is expanded. Since the relative position is maintained, the leaf spring 10A can be prevented from falling off from the outer peripheral edge 4 of the washer substrate 1 (FIGS. 8A and 8B).
Further, three leaf springs are used as the leaf spring pieces 10a, the two leaf spring pieces 10a and 10a are aligned on the concave side (large diameter side), and the lower leaf spring piece 10a is further moved to the convex side. The leaf springs 10A can be configured by stacking the leaf spring pieces 10a together with the small diameter side (FIG. 8C). In this case, the upper opening edge 21 of the film 20 is positioned on the lowermost leaf spring piece 10a, and the upper two leaf spring pieces 10a, 10a constitute the upper exposed portion 14 of the leaf spring 10A (FIG. 8 (c)).

(7) Further, as another leaf spring 10A, a circular flat plate is bent in a convex shape at the center thereof to form a partial spherical shell, and the outer periphery of the circular flat plate is used as a ring-shaped flat portion 16. A structure can also be adopted (FIG. 9). In this case, an elastic washer 30 is formed by providing a through hole in the convex center portion on the leaf spring 10A and placing it on the washer substrate 1 as the bolt insertion portion 13 and covering the film 20 (FIG. 9 ( a) (b)). In this case, the upper opening edge 21 of the film 20 is formed in the vicinity of the flat portion 16 (FIGS. 9A and 9B).

(8) Further, as another leaf spring 10A, flat plates 10a and 10a are integrally formed via a partially cylindrical hinge portion 17, and through holes are provided in the flat plates 10a and 10a to form bolt insertion portions 13 and 13. Configure (FIG. 10A). The plate spring 10A placed on a washer substrate 1, covered with a film 20, constituting the elastic washer 30 (FIG. 10 (a)).
Similarly, as other leaf springs 10A, flat plates 10a and 10a are integrally formed in a "U" shape via a belt-like hinge portion 17, and through holes are provided in the flat plates 10a and 10a to provide bolt insertion portions 13, 13 (FIG. 10B). The plate spring 10A placed on a washer substrate 1, covered with a film 20, constituting the elastic washer 30 (Figure 10 (b)).
In this case, the upper opening edge 21 of the film 20 is positioned around the bolt insertion portion 13 of the upper flat plate 10a, and the periphery of the bolt insertion portion 13 of the flat plate 10a forms the upper exposed portion 14 (FIG. 10A). (B)).

(9) Moreover, in the said embodiment, the gear-shaped toothed spring 10B can also be used as an elastic tool (FIG. 11).
The toothed spring 10 </ b> B is configured by annularly arranging tooth pieces 18, 18 that are bent on the outer peripheral side of the ring-shaped base 16 (FIG. 11A). In this case, the inner peripheral side of the ring-shaped base portion 16 constitutes the bolt insertion portion 13. The toothed spring 10B is placed on the upper surface 2 of the disc-shaped washer base 1, and the outer periphery of the toothed spring 10B and the washer base 1 is similarly covered and covered with the film 20 to form an elastic washer 30. (FIG. 11A). In this case, the upper opening edge 21 of the film 20 is formed near the tips of the tooth pieces 18 and 18 of the toothed spring 10B.
Further, the toothed spring 10B can be configured by annularly arranging tooth pieces 18 and 18 formed by bending on the inner peripheral side of the ring-shaped base portion 16 (FIG. 11B). In this case, the inner side of the tooth pieces 18, 18 forms the bolt insertion portion 13 on the inner periphery of the ring-shaped base portion 16. The toothed spring 10B is placed on the upper surface 2 of the disc-shaped washer base 1, and the outer periphery of the toothed spring 10B and the washer base 1 is similarly covered and covered with the film 20 to form an elastic washer 30. (FIG. 11B). In this case, the upper opening edge 21 of the film 20 is formed near the outer periphery of the ring-shaped base portion 16 of the toothed spring 10B.

DESCRIPTION OF SYMBOLS 1 Washer board 2 Upper surface of washer board 3 Lower surface of washer board 4 Outer peripheral edge of washer board 5 Bolt hole 6 of washer board Lower exposed part 10 of washer board Spring spring (elastic tool)
10A leaf spring (elastic tool)
10B Toothed spring (elastic tool)
10a leaf spring piece, flat plate 11 spring spring upper portion 12 spring spring lower portion 13 spring spring bolt insertion hole 14 spring spring upper exposed portion 15 spring spring rectilinear portion 16 leaf spring ring-shaped flat portion, toothed spring Ring-shaped base portion 17 Plate spring hinge portion 18 Toothed spring tooth piece 20 Film 21 Upper opening edge 22 of film Lower opening edge 30 of film Elastic washer 32 Concrete foundation (other member)
33 Anchor bolt (bolt)
34 Foundation (first member)
35 Top surface of base 36 Nut 40 Joint structure

Claims (4)

An elastic washer comprising a flat washer substrate having a bolt hole and an elastic tool having a bolt insertion portion stacked in a state where the bolt hole and the bolt insertion portion are in communication with each other, and configured as follows. .
(1) The elastic washer does not include a nut, and the washer substrate and the elastic tool are combined in a relatively movable state.
(2) At least the outer peripheral side of the washer substrate and the outer peripheral side of the elastic tool are covered with a common film so that the washer substrate and the elastic tool maintain a relative position. The film was adhered to the tool.
(3) In the film, an upper opening is formed corresponding to the bolt insertion portion on the upper side of the elastic tool, and a lower opening is formed corresponding to the bolt hole on the lower surface side of the washer substrate. Each of the opening and the lower opening has a structure in which a shaft of a bolt to be used can be inserted.
(4) The film is configured such that when the nut or bolt head is attached and tightened, the film does not twist. An elastic tool having a bolt insertion part is stacked on a flat washer substrate having a bolt hole in a state where the bolt hole and the bolt insertion part are communicated, and a part thereof is covered with a film, as follows: An elastic washer that is constructed.
(1) The elastic washer does not include a nut,
(2) At least the outer peripheral side of the washer substrate and the outer peripheral side of the elastic tool are covered with a common film so that the washer substrate and the elastic tool maintain a relative position. The film was adhered to the tool.
(3) In the film, an upper opening is formed corresponding to the bolt insertion portion on the upper side of the elastic tool, and a lower opening is formed corresponding to the bolt hole on the lower surface side of the washer substrate. Each of the opening and the lower opening has a structure in which a shaft of a bolt to be used can be inserted.
(4) The elastic device is structured as a spring spring formed at least one round, and the upper portion of the elastic device can be accommodated in the bolt insertion portion of the elastic device when pressed against an elastic force. . The elastic washer according to claim 1 or 2, wherein the elastic washer is configured as follows.
(1) Expose the upper end of the elastic tool from the upper opening, expose the periphery of the bolt hole of the washer board from the lower opening,
(2) In the film, the upper opening was formed larger than the minimum diameter of the bolt insertion portion, and the lower opening was formed larger than the bolt hole.
(3) The film was formed so as not to contact the head of the nut or bolt to be used in a state where the nut or bolt was attached and the elastic tool was not pressed. When joining the first wood and another member, an elastic washer is attached to the shaft of the bolt penetrating the first wood from the other member side, and the wood is configured as follows. Bonding structure.
(1) An elastic washer was constructed as follows.
(a) An elastic tool having a bolt insertion part is connected to a flat washer board having a bolt hole in a state where the bolt hole and the bolt insertion part are communicated with each other , and the washer board and the elastic tool are relatively Combined in a freely movable state and stacked .
(b) at least the outer peripheral side of the washer substrate, an outer peripheral side of the elastic member, and covered by a common film, and the washer substrate wherein as the elastic member is kept a relative position, and said washer substrate wherein The film was adhered to the elastic tool.
(c) In the film, an upper opening was formed on the upper side of the elastic tool so as to correspond to the bolt insertion portion, and a lower opening was formed on the lower surface side of the washer substrate in correspondence with the bolt hole.
(2) the bolt axis of the first bolt protruding from the timber, and mounting the elastic washer in a state coated with the film, the the upper opening and lower opening is penetrated through the bolt axis, and the said elastic washer A washer substrate was adhered to the surface of the first wood.
(3) by tightening the head or nut of the bolt to form a cemented structure of the timber, said film, when tightened the head or nut of the bolt, the film is not broken, and the film, When the bolt head or the nut is mounted and tightened, the film is not twisted.

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