JPH11201121A - Connection structure for playground equipment - Google Patents

Abstract

(57) [Summary] [Problem] A play metal fitting that can be fixed to a flat part of a member as a seat surface on either side of a seat plate of the fitting, thereby greatly improving the usability of the fitting. Provide mounting structure. SOLUTION: A member having a flat plate portion (20, 21) having through holes (22, 23) formed therein, and a bolt through hole (1).
4) A connection fitting (10) having a seat plate portion (12) fixed to a flat plate portion, and a cylindrical nut portion (26) fitted inside a through hole and having a screw (27) formed on an inner peripheral surface thereof. ) And a seat portion (30) formed to be larger in diameter than the nut portion and to be engaged with the outer edge of the through hole;
A button bolt (35) for inserting the bolt through hole, being inserted into the through hole from the opposite side of the insert nut, screwing into the nut part, and fixing the connection metal part to the flat plate part; The connection fitting has a fitting hole (16) on the outer peripheral portion of the bolt through hole, and the insert nut has
A projection is provided which protrudes forward from the tip of the nut portion and fits into the fitting hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a connection fitting used for a multipurpose for a playground equipment such as a slide.

[0002]

2. Description of the Related Art Conventionally, connection fittings used for various purposes in playground equipment such as slides are, from the viewpoint of safety, edge parts such as bolt heads and the like of fasteners such as bolts and nuts fixing the connection fittings. However, care must be taken not to injure the child and to make sure that the exposed bolts and nuts are not easily loosened by general tools due to mischief. For this reason, the applicant of the present invention has disclosed Japanese Patent Application No. Hei 9-10882 for the purpose of eliminating an edge portion such as a bolt head and preventing an exposed bolt or nut from being easily loosened with a general tool.
9 discloses a multipurpose connection fitting for playground equipment using a round-headed button bolt and an insert nut.

According to Japanese Patent Application No. 9-10829, this connection fitting has a projection at the outer edge of a bolt through hole on the seating surface side of the seat plate to fit into the through hole of the flat plate. An insert nut is fitted into the hole, a button bolt for fixing the seat plate of the connection fitting is inserted into the insert nut from the opposite side of the flat plate, and screwed into the insert nut to fix the connection bracket to the flat plate. . This insert nut has a concave portion at the tip to be fitted to the convex portion of the connection fitting, and the insert nut is prevented from rotating when the button bolt is fastened. This makes it possible to remove the previously required wrench hole from the head of the insert nut, so that the bolt and nut cannot be loosened from the insert nut side.

[0004]

However, as described above, the conventional connection fitting has a convex portion on the seat surface side of the seat plate portion for fitting the concave portion of the insert nut.
This connection fitting must be fixed to the flat plate side with the surface on the side where the projections protrude as the seating surface. That is, the conventional connection fitting cannot be fixed to a flat plate with the surface of the seat plate opposite to the surface on which the convex portion is formed as a seat, and there is a problem that the usability is extremely poor.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is possible to fix any surface of a seat plate portion of a connection fitting to a flat plate portion of a member as a seating surface. It is an object of the present invention to provide a play equipment connection fitting mounting structure in which the usability has been significantly improved.

[0006]

Means for Solving the Problems To solve the above-mentioned problems, a means adopted by the present invention is a member having a flat plate portion having a through hole and a seat plate having a bolt through hole. A connection metal fitting fixed to the flat plate part, a cylindrical nut part fitted inside the through-hole and having a thread formed on the inner peripheral surface, and formed with a larger diameter than the nut part and locked to the outer edge of the through-hole And a button bolt that is inserted into the through hole from the opposite side of the insert nut through the bolt through hole and screwed into the nut portion to fix the connection fitting to the flat plate portion. Connection fitting mounting structure for
The connection fitting has a fitting hole on the outer periphery of the bolt through hole, and the insert nut has a projection that projects forward from the tip of the nut part and fits into the fitting hole. By this means, the convex portion of the conventional seat plate portion is eliminated from the connection fitting, so that the surface on either side of the seat plate portion can be fixed to the flat plate portion of the member as a seat surface.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connection fitting mounting structure for play equipment using an angle-type connection fitting according to a first embodiment of the present invention will be described below in detail with reference to FIGS. As shown in FIG. 1, the playground equipment prism 1 is a hollow quadrangular prism, and has a bracket mounting channel 3 at the center of the lower and right side surfaces 2, 2. The channel 3 and the slits 4 provided in the channel 3 extend in the longitudinal direction of the prism 1, respectively, and double nuts 5 having two screw holes 6 are provided inside the channel 3, respectively.

As shown in FIG. 2, the angle-type connection fitting 10 shown in FIG. 1 has two orthogonal seat plates 11, 12.
Two bolt through holes 13 and 13 are provided in one seat plate portion 11,
The other seat plate 12 has one bolt passage hole 14.
The two bolt holes 13 of the seat plate 11 are separated by the same length as the length between the two screw holes 6 of the double nut 5 described above. The three bolt through holes 13 and 14 have the same diameter, and four notch portions are provided at equal intervals on the outer periphery (outer peripheral portion) to form four fitting holes 15 and 16, respectively. As shown in FIG. 1, a seat plate 11 of the connection fitting 10 is provided.
The two button bolts 35 are screwed into the two screw holes 6 of the double nut 5 on the side surface 2 side of the prism 1, and the seat plate 11 of the connection fitting 10 is positioned below and on the right side of the prism 1. Face 2, 2
To each other.

As shown in FIG. 1, two flat plates (flat portions)
20 and 21 are prepared, and one through hole 22 and 23 are formed in the flat plates 20 and 21 respectively. Insert nut 25
Is a cylindrical nut portion 26 having a screw 27 on the inner peripheral surface.
And a seat portion 30 having a larger diameter than the nut portion 26. As shown in FIG.
Four projections 29 respectively fitted into the two fitting holes 15 and 16
Protrude forward from the tip end 28 of the nut portion 26 at equal circumferential intervals.

As shown in FIG. 1, a through hole 22 is formed in a seat surface 18 inside a seat plate portion 12 of a connection fitting 10 in which a flat plate 20 is attached to a lower side surface 2 of a prism 1 as shown in FIG. And temporarily fixed according to the bolt holes 14 shown in FIG. Connection fitting 10
Insert nut 25 is inserted into through-hole 22 of flat plate 20 from the opposite side, and four protrusions 29 of insert nut 25 are inserted.
Are respectively fitted into the four fitting holes 16 of the seat plate portion 12 of the connection fitting 10, and the insert nut 25 is inserted into the through hole 22 of the flat plate 20 until the seat portion 30 is engaged with the outer edge of the through hole 22. Press Connect the button bolt 35 to the seat plate 1 of the connection fitting 10.
2 through the bolt holes 14 and through holes 22 in the flat plate 20.
And insert the button bolt 35 into the insert nut 25
Screw 27. Thereby, the flat plate 20 is fixed to the seating surface 18 side of the seat plate portion 12 of the connection fitting 10.

Next, a flat plate 21 is attached to the right side surface 2 of the prism 1, and an outer seat surface 19 of the seat plate portion 12 of the connection fitting 10.
Then, the through holes 23 are temporarily fixed to the bolt holes 14 shown in FIG. As in the case of the flat plate 20 described above, the flat plate 21 is fixed to the seat surface 19 side of the seat plate portion 12 of the connection fitting 10 using the button bolt 35 and the insert nut 25. As described above, according to the play fitting connection fitting mounting structure, the seat plate 1 for the same connection fitting 10 is used.
The surfaces 18 and 19 on either side of 2 can be fixed to a flat plate as a seat surface, and the usability of the connection fitting is significantly improved.

In the first embodiment described above, the fitting hole 15 is also provided on the outer periphery of the bolt through hole 13 of the other seat plate portion 11 of the angle-type connection fitting 10, so that, for example, this angle-type connection When the metal fittings 10 are used to connect the flat plates, the play metal fitting mounting structure can be implemented for both flat plates. Also, the fitting holes provided on the outer peripheral portion of the bolt through hole need not necessarily be provided in the outer periphery of the bolt through hole as notches like the fitting holes 15 and 16 described above. It may be provided in an independent hole shape at a place (outer peripheral portion) away from the outside. Further, it is not always necessary to provide four fitting holes and projections of the insert nut fitted in the fitting holes, and it is sufficient that one or more sets are provided. Further, the above-mentioned flat plate may be a member of various shapes in which only the portion where the connection fitting 10 is fixed is formed in a flat plate shape.

[0013]

FIG. 4 shows a second embodiment of an angle-type connection fitting 110 having two orthogonal seat plates 111 and 112, each of which has one bolt hole 113, 114 are provided respectively, and the bolt through holes 11
Four fitting holes 115 and 116 are formed in the outer circumferences of 3 and 114, respectively.

FIG. 5 shows a third embodiment of a T-type fitting 21.
No. 0 is provided with a receiving portion 211 at the center of the seat plate portion 212 for inserting and receiving the tubular member or the rod-shaped member upright with respect to the flat plate portion of the member. Two bolt through holes 214 are provided in the seat plate 212, and the bolt through holes 214
, Four fitting holes 216 are formed respectively. The cross-type connection fitting 310 of the fourth embodiment shown in FIG. 6 has a receiving portion 311 for inserting and receiving a cylindrical member or a rod-shaped member in parallel with the flat plate portion of the member at the center of the seat plate portion 312. Prepare. Two bolt holes 314 are provided in the seat plate portion 312, and four bolt holes 3 are formed around the bolt holes 314.
16 are formed respectively. The cross-type connecting fitting 610 of the fifth embodiment shown in FIG. 7 has two receiving plates 611 for receiving a cylindrical member or a bar-shaped member by inserting the cylindrical member or the rod member in parallel to the flat plate portion of the member. Provided at the corners of the parts 612, 613. Bolt through holes 614 in the seat plates 612 and 613,
615 are provided, and four fitting holes 616 and 617 are formed on the outer periphery of the bolt through holes 614 and 615, respectively.

A cross-type connecting fitting 410 of a sixth embodiment shown in FIG. 8 has a fixing portion 411 for holding a cylindrical member or a rod-shaped member from the side and fixing it to a flat plate portion of the member by two seat plates. Provided between the sections 412. Bolt hole 4 in seat plate 412
14 are provided, and four fitting holes 416 are formed on the outer periphery of the bolt through holes 414, respectively. The angle-type connection fitting 510 of the seventh embodiment shown in FIG. 9 has two parallel flanges 511 and 511 orthogonal to the flat plate portion of the member, which are erected at the center of the seat plate portion 512, as shown in FIG. Support shaft 517a of two pipes (cylindrical members) 517 indicated by imaginary lines
Are pivotally supported between the two flanges 511. Two bolt holes 514 are provided in the seat plate portion 512, and four fitting holes 516 are formed on the outer periphery of the bolt holes 514, respectively. The pipe 51 described above is used.
7 may be a solid rod-shaped member.

An angle type connection fitting 710 according to an eighth embodiment shown in FIG. 10 has three orthogonally-attached seat plates 711, 712,
713, and these seat plate portions 711, 712, 713
One bolt through hole 714, 715, 716 is provided in each of them, and four fitting holes 717, 718, 719 are formed on the outer periphery of the bolt through holes 714, 715, 716, respectively.

The connection fittings of the second to eighth embodiments described above are similarly fixed to the flat portion of the member using the button bolt 35 and the insert nut 25 of the first embodiment. At this time, the seat plate portion of the connection fitting can be fixed to the flat plate portion with any surface thereof as a seat surface.

[0018]

As described above in detail, the connecting structure for a playground equipment according to the present invention comprises a member having a flat plate portion having a through hole and a seat plate having a bolt through hole. And a cylindrical nut portion fitted inside the through-hole and having a thread formed on the inner peripheral surface thereof, and a seat formed to have a diameter larger than that of the nut portion and engaged with an outer edge portion of the through-hole. And a button bolt which is inserted into the through hole from the opposite side of the insert nut through the bolt through hole and screwed into the nut to fix the connection fitting to the flat plate. Has a fitting hole on the outer peripheral portion of the bolt through hole, and the insert nut has a projection that projects forward from the tip of the nut portion and fits into the fitting hole. As a result, the convex portion of the seat plate required in the conventional connection fitting is eliminated from the connection fitting, so that the surface on either side of the seat plate can be fixed to the flat portion of the member as a seat. This has an excellent effect of significantly improving the usability of the connection fitting.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a play equipment connection fitting mounting structure according to the present invention.

FIGS. 2A and 2B are views showing a part of the angle-type connection fitting of FIG. 1 in a cross section, FIG. 2A is a plan view, and FIG.

FIG. 3 is a view showing the insert nut of FIG. 1;
(A) is a front view, (b) is a right side view.

FIGS. 4A and 4B are views showing a part of the angle-type connection fitting of the second embodiment in a cross section, wherein FIG. 4A is a plan view and FIG. 4B is a front view.

FIG. 5 is a view showing a T-type fitting of a third embodiment;
(A) is a top view, (b) is a partial sectional front view.

FIGS. 6A and 6B are views showing a cross-type connection fitting of a fourth embodiment, wherein FIG. 6A is a plan view and FIG.

FIGS. 7A and 7B are views showing a cross-type fitting of the fifth embodiment, wherein FIG. 7A is a partial cross-sectional side view and FIG. 7B is a front view.

FIGS. 8A and 8B are diagrams showing a cross-type fitting of the sixth embodiment, wherein FIG. 8A is a plan view and FIG. 8B is a partial sectional front view.

9A and 9B are views showing an angle-type connection fitting of a seventh embodiment, wherein FIG. 9A is a plan view and FIG. 9B is a partial cross-sectional front view.

FIG. 10 is a sectional view showing an angle-type connection fitting of an eighth embodiment.

[Explanation of symbols]

1 prism, 2 sides, 3 channels, 4 slits,
5 double nuts, 6 screw holes, 10 connection fittings, 11,
12 Seat plate part, 13, 14 Bolt through hole, 15, 16
Fitting hole, 17, 18, 19 Seat surface, 20, 21 Flat plate, 22, 23 through hole, 25 Insert nut, 26
Nut part, 27 screw, 28 tip, 29 protrusion, 3
0 seat, 35 button bolt, 110 connection fitting, 1
11, 112 Seat plate portion, 113, 114 Bolt through hole, 115, 116 Fitting hole, 210 Connection fitting, 21
1 receiving portion, 212 seat plate portion, 214 bolt through hole,
216 fitting hole, 310 connection fitting, 311 receiving part,
312 Seat plate portion, 314 bolt through hole, 316 fitting hole, 410 connection fitting, 411 fixing portion, 412 seat plate portion, 414 bolt through hole, 416 fitting hole, 510
Connection fittings, 511 flange, 512 seat plate, 514
Bolt through hole, 516 fitting hole, 517 pipe, 517
a support shaft, 610 connection fitting, 611 receiving part, 61
2,613 Seat plate, 614,615 Bolt through hole,
616, 617 Fitting hole, 710 connection fitting, 711, 7
12, 713 Seat plate part, 714, 715, 716 Bolt through hole, 717, 718, 719 Fitting hole

Claims (7)

[Claims] 1. A member having a flat plate portion (20, 21) having through holes (22, 23) formed therein, and a bolt through hole (1).
(4) a connection fitting (10) for fixing the seat plate (12) to the flat plate portion, and a cylindrical nut portion fitted inside the through hole and having a screw (27) formed on the inner peripheral surface. (2
6) and an insert nut (25) having a diameter larger than that of the nut part and being engaged with an outer edge of the through hole, and an insert nut (25) inserted through the bolt hole. And a button bolt (35) inserted into the through hole from the opposite side to screw into the nut portion to fix the connection fitting to the flat plate portion, wherein the connection fitting is A fitting hole (16) is provided on an outer peripheral portion of the bolt through hole, and the insert nut is provided with a projection (29) that projects forward from a tip (28) of the nut part and fits into the fitting hole. A structure for mounting a connection metal fitting for a playground equipment. 2. The connection fitting (10, 110) has two orthogonal seat plate portions (11, 12, 111, 112), and a bolt through hole (1) of at least one of the seat plate portions.
3, 14, 113, 114) at the outer periphery.
The mounting structure for a playground equipment according to claim 1, characterized in that it is an angle-type connection metal fitting provided with (5, 16, 115, 116). 3. A central part of the seat plate part (212) for receiving a receiving part (211) for receiving a cylindrical member or a rod-shaped member by being inserted upright with respect to the flat plate part. The connection fitting mounting structure for play equipment according to claim 1, characterized in that the connection fitting is a T-shaped connection fitting provided in (1). 4. The connection fitting (310, 610) receives a receiving portion (311, 611) for receiving a cylindrical member or a rod-shaped member by being inserted in parallel with the flat plate portion.
2) The central portion of the two or the two orthogonal seat plates (612,
613) The connection metal fitting mounting structure for a playground equipment according to claim 1, characterized in that it is a cross-type metal fitting provided at the corner of (613). 5. The connecting fitting (410) includes a fixing portion (411) for holding a cylindrical member or a rod-shaped member from the side and fixing the same to the flat plate portion between the seat plate portions (412). The connecting structure for a playground equipment according to claim 1, wherein the mounting structure is a cross-type fitting. 6. The connection fitting (510) includes two parallel flanges (511) orthogonal to the flat plate portion (512), which are erected at the center of the seat plate portion. The connecting structure according to claim 1, wherein the mounting structure is an angle-type connecting member that pivotally supports a member on the flange. 7. The connecting fitting (710) has three orthogonal parts.
One of the seat plate portions (711, 712, 713) has at least one bolt hole (714, 71).
5, 716) in the outer peripheral portion of the fitting hole (717, 718,
719), wherein the connection fitting mounting structure for a playground equipment according to claim 1, characterized in that it is an angle-type connection fitting.