JP3102074U - Foldable jungle gym and its joint unit - Google Patents

Abstract

【Task】
A rigid jungle gym that does not deform in the deployed and used state while providing a three-dimensional framework so that the entire body can be folded is provided.
[Solution]
The first to sixth fixed pipe joints (J1) to (J6) in various orientations corresponding to the intersections of the cube frames (A), (B1), (B2), (C), and (C1) are defined by horizontal horizontal bones forming the cube frames. While the pipe (X) and the end of the vertical bone pipe (Z) are each press-fitted and integrated, the same type of rotating pipe joint (E) is press-fitted and integrated with both ends of the vertical and horizontal bone pipe (Y). The pivot pipe joint is pivotally connected to each of the first to sixth fixed pipe joints so as to be rotatable about 90 degrees by the vertical axis (P), and the rotation preventing cover sleeve (S) is connected. It was inserted into the pivot joint so that it could be advanced and retracted, and fitted.
[Selection] Fig. 41

Description

  The present invention relates to a folding jungle gym for indoor use and a useful joint unit therefor.

  The present applicant has previously proposed Utility Model Registration No. 3097851 as a folding jungle gym for indoor use, and it was possible to obtain a desired small and flat folded state by its configuration. This registered utility model gazette has not been issued yet.

  However, as a result of intensive examinations while trying all the harsh usage methods of infants thereafter, as long as the configuration of the above registered utility model is maintained, the rotation of the rotating pipe joint (J) during deployment and use of the jungle gym is performed. There is no movement prevention mechanism, and the shape retention strength and resistance from the direction orthogonal to the vertical axis (P) forming the rotation fulcrum are inferior.

  In particular, the lower left and right cubic frames (B1) and (B2), in which the top plate (22) is fitted in the cover state and not locked, and the uppermost cubic frame (C) are free, so to speak, without any upper frame. In a state where the third and fourth fixed pipe joints (J3) and (J4) on the upper side intersect, when a strong external force is applied along the diagonal of the square from the horizontal direction, the joint is folded. Even if it is not done, it is easy to be deformed from its square in a plan view to a rhombus, and stress is applied to the pivotal connection between the third and fourth fixed pipe joints (J3) (J4) and the rotary pipe joint (J). This can result in concentration and loss of the pivot connection.

  The present invention intends to improve such a problem, and for that purpose, a plurality of lower cubes arranged in parallel using a plurality of vertical and horizontal bone pipes, a plurality of horizontal and horizontal bone pipes, and a plurality of vertical bone pipes. As a folding jungle gym that is framed three-dimensionally from a frame and at least one upper cubic frame laminated thereon,

  While the first to sixth fixed pipe joints of various orientations corresponding to the intersections of the cubic frame are respectively press-fitted and integrated into the end of the horizontal horizontal bone pipe and the end of the vertical bone pipe forming the cubic frame,

  Similarly, one type of rotating pipe joint is press-fitted and integrated into both ends of a vertical and horizontal bone pipe that also forms a cube frame,

  The pivot pipe joint is pivotally connected to the first to sixth fixed pipe joints so as to be able to pivot by about 90 degrees with respect to the vertical axis, respectively,

  That the rotation-preventing cover sleeve is fitted over the vertical and horizontal bone pipe to a pivotal connection between at least one of the first to sixth fixed pipe joints and the rotation pipe joint so as to be able to advance and retreat. Features and

  Also, from a plurality of vertical and horizontal bone pipes and a plurality of horizontal and horizontal bone pipes and a plurality of vertical bone pipes, as a joint unit for three-dimensionally forming a jungle gym,

  A rotating pipe joint in which a horizontal connecting plate piece crossing over the diameter line of the leg cylinder projects from the tip end of the leg cylinder which is press-fitted and integrated into the end of the vertical horizontal bone pipe, and is extended,

  From the intersections of at least two directions of orthogonal leg cylinders that are press-fitted and integrated into the end of the horizontal horizontal bone pipe and the end of the vertical bone pipe, respectively, in another direction that is further orthogonal to the plurality of leg cylinders, A fixed pipe joint in which at least one of the horizontal connecting fork plate pieces for receiving the connecting plate pieces of the rotating pipe joint is correspondingly protruded;

  A vertical shaft that pivotally connects the rotating pipe joint so as to be able to rotate by about 90 degrees with respect to the fixed pipe joint by being skewered and penetrated into the connecting plate piece and the connecting fork plate piece;

  A rotation-preventing cover sleeve, which is slidably inserted into the vertical and horizontal bone pipe and is fitted over the vertical and horizontal bone pipe so as to advance and retreat from the vertical and horizontal bone pipe to the pivotal connection between the connecting plate and the connecting fork plate. ,

  By operating the cover sleeve to cover the pivotal connection between the connecting plate piece and the connecting fork plate piece, the rotating pipe joint is fixed and maintained in a non-rotatable jungle gym deployed and used state. on the other hand,

  By retreating the cover sleeve from the pivotal connection between the connecting plate piece and the connecting fork plate piece onto the vertical horizontal bone pipe, the rotary pipe joint can be folded around the vertical fulcrum of the vertical axis. It is characterized by having been determined as described above.

  In the above configuration specified in claim 1 of the present invention, at each intersection of the cubic frames, the first to sixth fixed pipe joints which are press-fitted and integrated into the horizontal horizontal bone pipe and the vertical bone pipe that frame them, and Since the rotary pipe joint press-fitted into both ends of the horizontal bone pipe is pivotally connected via a vertical axis so as to be rotatable by about 90 degrees, the entire jungle gym is vertically extended. Around the fulcrum of the shaft, for example, it is possible to perform a convenient conversion operation from the deployed and used state as shown in FIGS. 1 to 4 to the folded state as shown in FIGS. The flat folded state shown in FIGS. 44 to 47 has an effect of being compactly stored and stored in a narrow closet of a veranda in an apartment house.

  In addition, the rotation-preventing cover sleeve inserted and inserted into the vertical and horizontal bone pipe is advanced from the vertical and horizontal bone pipe to rotate with at least one of the first to sixth fixed pipe joints. If the pivot joint with the moving pipe joint is covered, it is fixed and maintained so as not to be able to rotate with the vertical axis as a fulcrum, so that the jungle gym is not inadvertently folded, and It is possible to effectively prevent unauthorized distortion and deformation in a use state.

  In particular, if the structure of claim 2 is adopted, the cover sleeve is pivoted by the engagement between the horizontal lock pin protruding from the rotary pipe joint and the lock pin receiving hole opened in the rotation prevention cover sleeve. The jungle gym can be locked in a state where it can be prevented from coming off from the support connecting portion and a state in which it can be prevented from rotating.

  On the other hand, according to the configuration of the joint unit according to the third aspect, the jungle gym is formed by using various fixed pipe joints in a directional form corresponding to the intersection of the jungle gym, one kind of rotating pipe joint, and a vertical axis. Can be folded freely and conveniently into a three-dimensional framework, and the rotation-preventing cover sleeve, which is slidably inserted into the vertical and horizontal bone pipes, is connected to the connecting plate piece of the rotating pipe joint and the fixed pipe joint. By moving forward and backward to the portion where the fork plate piece is pivotally connected, it is possible to reliably obtain the folded and used state of the jungle gym and the expanded and used state of high shape-retaining strength that does not deform.

  Further, if the configuration according to claim 4 is adopted, the lock pin attached to the rotary pipe joint is in a horizontal protruding state orthogonal to the vertical axis as facing forward and / or backward from the connecting plate piece. In addition, by engaging with the lock pin receiving hole of the cover sleeve, the cover sleeve is locked so as not to slip out of the pivotal connection portion between the rotating pipe joint and the fixed pipe joint and to prevent slipping, so that the cover sleeve is deployed and used. Can enhance the safety of infants.

  If the configuration according to claim 5 is adopted, the connecting plate piece of the rotating pipe joint and the connecting fork plate piece of the fixed pipe joint are aligned in a flush state as the entire circumferential surface of the surfaces thereof. Therefore, the rotation-preventing cover sleeve can be smoothly and quickly advanced and retracted with respect to the pivot joint between the rotating pipe joint and the fixed pipe joint, and the operability is improved.

  Furthermore, if the configuration according to claim 6 is adopted, the connecting plate piece of the rotating pipe joint and the connecting fork plate piece of the fixed pipe joint both project correspondingly by the thickness of the vertical and horizontal bone pipe. Since it is formed, the vertical and horizontal bone pipes and the horizontal and horizontal bone pipes that frame the jungle gym are in close contact with each other, which contributes to the overall flattening of the folded state.

  Adopting the configuration according to claim 7 has effects that the operation of moving the rotation preventing cover sleeve forward and backward can be performed quickly and accurately, and that the safety of the infant in the deployed and used state can be ensured.

  Hereinafter, the specific configuration of the present invention will be described in detail with reference to the drawings. The indoor jungle gym of the present invention includes a total of 14 parallel vertical and horizontal bone pipes (Y) extending in the Y direction (left-right direction). ), A total of 10 parallel horizontal bone pipes (X) traversing along the X direction (front-back direction), and a total of 12 parallel vertical bone pipes standing along the Z direction (height direction). (Z), the pivot pipe joints (J) attached to the left and right ends of each vertical horizontal bone pipe (Y), and the intersection of each horizontal horizontal bone pipe (X) and each vertical bone pipe (Z). Each of the inserted first to fourth fixed pipe joints (J1), (J2), (J3), and (J4) and each of the fixed pipe joints (J1), (J2), (J3), and (J4) has a rotating pipe joint ( J) from a vertical axis (P) rotatably and pivotally connected, as shown in the basic embodiment of FIGS. The frame is three-dimensionally formed into an overall convex contour shape in a plan view, and it can be converted from the expanded three-dimensionally used state to the flat folded state shown in FIGS. 44 to 47 or vice versa. It has become.

  In other words, in the unfolded and used state as shown in FIGS. 1 to 4, (A) is a lower center cubic frame of the jungle gym, and (B1) and (B2) are symmetrical lower left sides arranged in parallel on both sides thereof. The cubic frame and the lower right cubic frame, (C) illustrates one upper cubic frame similarly laminated on the lower central cubic frame (A), and these are all expanded into squares in plan view. It is offered to play.

  Regarding the components of such a jungle gym, first, the bone pipes (X), (Y), and (Z) are made of ABS resin, polypropylene, or other hard material having the same thickness (D) (for example, a diameter of about 30 mm). The horizontal and horizontal bone pipes (X) and the vertical bone pipes (Z) are long as a fixed length (L1) of, for example, about 300 mm. Y) is shortly different as a fixed length (L2) of, for example, about 230 mm, and the two types having different lengths can be used properly.

  Next, the rotary pipe joint (J) is also a type integrally formed from a hard synthetic resin such as ABS resin or polypropylene, and is a type of a barrel (1) as shown in FIG. In addition to having a horizontal connecting plate piece (2) extended and extended so as to cross over the diameter line of (1), a boundary between the leg cylinder (1) and the connecting plate piece (2) A circular press-fitting depth regulating flange (3) having the same diameter as the diameter (D) of the bone pipe (X) (Y) (Z) is projected, and the circumferential surface of the regulating flange (3) is The front and rear surfaces of the connecting plate piece (2), which form an arc, are continuous with each other.

  In this case, the horizontal connecting plate piece (2) of the rotary pipe joint (J) has a substantially rectangular shape in plan view, but only the front or rear end corner is allowed to rotate in one direction. As the surface (4), the connecting plate piece (2) is cut out in an arc or straight line drawing a constant turning radius from a vertical shaft receiving hole (5) formed through the center of the connecting plate piece (2). It can rotate about 90 degrees about the axis (P) as a fulcrum.

  As shown in FIG. 5, the leg tube (1) of such a rotary pipe joint (J) is press-fitted and integrated into the left and right ends of the short vertical and horizontal bone pipe (Y) in a plugged state. Accordingly, the entire length of the vertical horizontal bone pipe (Y) including the pair of rotating pipe joints (J) is a constant length substantially equal to the long horizontal horizontal bone pipe (X) and the vertical bone pipe (Z). (L1).

  As a result, the lower center cubic frame (A), the lower left cubic frame (B1), the lower right cubic frame (B2) and the upper cubic frame (C) of the jungle gym are all literally "cube frames" in FIG. It is shaped like ~ 4. In addition, the rotary pipe joint (J) provided with the horizontal connecting plate piece (2) can be press-fitted and fixed to the vertical and horizontal bone pipe (Y) without distinguishing the vertical direction due to its use.

  Further, the four types of the first to fourth fixed pipe joints (J1), (J2), (J3), and (J4) are also made of the same hard synthetic resin as the above-mentioned rotary pipe joint (J), and are made of the cubic frame (A) ( Each of the directional forms corresponding to the intersections of B1), (B2), and (C) is integrally formed as shown in FIGS. 7, 12, 17, and 18, respectively, on the framework of the jungle gym illustrated in FIGS. 4 fixed pipe joints (J2), 4 fixed pipe joints (J3), 4 fixed pipe joints (J4) Will be used respectively.

  That is, the first fixed pipe joint (J1) includes, as a two-way joint, a horizontal leg tube (6X) and an upward vertical leg tube (6Z) intersecting in an L-shape in a side view as shown in FIG. However, it also includes a pair of left and right horizontal connecting fork plate pieces (7L) (7R) that protrude from both sides of the intersection by the thickness (D) of the bone pipes (X) (Y) (Z) to both sides. As shown in FIGS. 1, 2, and 8, it is inserted and used at an intersection having an inverted T-shape as viewed from the front.

  Then, as is apparent from FIGS. 8 to 11, the horizontal leg tube (6X) of the first fixed pipe joint (J1) is connected to one end of the horizontal horizontal bone pipe (X) by the same upward vertical leg tube ( 6Z) is press-fitted into the lower end of the vertical bone pipe (Z), while the vertical horizontal bone pipe (Y) is opposed to the gap between the two connecting fork plate pieces (7L) and (7R). The connecting plate pieces (2) of the rotary pipe joint (J) attached to the above are to be respectively received. In this case, both the connecting fork plate pieces (7L) and (7R) are formed in a curved shape having the same diameter as the circular press-fitting depth regulating flange (3) of the rotary pipe joint (J).

  (8) and (8) are circular press-fitting depths protruding from the base ends of the leg tubes (6X) and (6Z) by the thickness (D) of the bone pipes (X), (Y), and (Z), respectively. The regulating flanges (9) and (9) are a pair of right and left vertical shaft receiving holes formed through the projecting tips of both connecting fork plate pieces (7L) and (7R). It communicates with the vertical axis receiving hole (5) opened in the plate piece (2).

  In the illustrated example, such a first fixed pipe joint (J1) is used as an upwardly extending vertical leg tube (6Z). However, depending on the framework of the jungle gym, the first fixed pipe joint (J1) may be in a downwardly inverted state. It could be used.

  The second fixed pipe joint (J2) is a three-way joint, as shown in FIG. 12, a horizontal leg tube (16X) intersecting in a sideways T-shape and a pair of upper and lower vertical leg tubes (16Z) (16Z). And a pair of left and right horizontal connecting fork plate pieces (17L) (17R) that also protrude from the crossing portion to both sides by the thickness (D) of the bone pipes (X) (Y) (Z). ), It is inserted and used at a cross-shaped intersection in a front view as shown in FIGS.

  That is, as is clear from FIGS. 13 to 16, the horizontal leg tube (16X) of the second fixed pipe joint (J2) is the same as that of the first fixed pipe joint (J1). One end is press-fitted and integrated, and an upward vertical leg tube (16Z) is also connected to the lower end of the vertical bone pipe (Z), and the remaining downward vertical leg tube (16Z) is connected to another vertical bone pipe (Z). ) Are press-fitted and integrated into the upper end portions. However, the second fixed pipe joint (J2) can be used without distinguishing its vertical direction.

  On the other hand, in the gap between the two connecting fork plate pieces (17L) and (17R), like the first fixed pipe joint (J1), the rotating pipe joint (J) attached to the vertical and horizontal bone pipe (Y) is provided. The connecting plate pieces (2) are respectively received from opposite left and right directions. In this case, the two connecting fork plate pieces (17L) and (17R) are circles having the same diameter as the circular press-fit depth limiting flange (3) of the rotary pipe joint (J), similarly to the first fixed pipe joint (J1). It is curved in an arc shape.

  (10) (10) and (10) are the same as the bone pipes (X), (Y) and (Z) in thickness (D) from the base end of the insertion leg barrel (16X) (16Z) (16Z). Circular press-fit depth regulating flanges that protrude, (11) and (11) are a pair of right and left vertical shaft receiving holes formed through the protruding tips of both connecting fork plate pieces (17L) and (17R). It communicates with the vertical shaft receiving hole (5) opened in the connecting plate piece (2) of the rotary pipe joint (J).

  The two types of third and fourth fixed pipe joints (J3) and (J4) are so-called left-handed and right-handed symmetrical two-way joints. It has a horizontal leg tube (26X) and an upward vertical leg tube (26Z) that intersect in a letter shape, but it is almost vertical and horizontal bone pipe (Y) only from the intersection to the left or right side. 1 (27L) and 27R (27R), which protrude by the thickness (D) of the front side, to the intersection having an L shape in a front view as shown in FIGS. Used for interpolation. However, it is also possible to insert the vertical leg tube (26Z) downward at the intersection of an inverted L-shape in front view.

  That is, as is clear from FIGS. 19 to 22, the horizontal leg tubes (26X) of the third and fourth fixed pipe joints (J3) and (J4) are combined with the first and second fixed pipe joints (J1) and (J2). Similarly, while being integrated by press fitting into one end of the horizontal horizontal bone pipe (X), the vertical leg tube (26Z) is integrated by press fitting into the lower end or upper end of the vertical bone pipe (Z). In the gap between the connecting fork plate pieces (27L) and (27R), the connecting plate piece (2) of the rotating pipe joint (J) attached to the vertical horizontal bone pipe (Y) is placed in one of the right and left directions. Will be accepted from. Like the first and second fixed pipe joints (J1) and (J2), each of the connecting fork plate pieces (27L) and (27R) also has a circular press-fit depth regulating flange (3) of the rotary pipe joint (J). It is curved in the shape of an arc having the same diameter as that of.

  From the base ends of the leg tubes (26X) (26Z) forming the third and fourth fixed pipe joints (J3) (J4), circular press-fitting depth regulating flanges (12) and (12) are respectively provided on the bone pipes. (X), (Y) and (Z), and the connecting fork plate pieces (27L) and (27R) have the protruding tip portions at the protruding end portions thereof. The vertical shaft receiving holes (13) (13) corresponding to the vertical shaft receiving holes (5) opened in the connecting plate piece (2) are also formed through.

  When the first to fourth fixed pipe joints (J1), (J2), (J3), and (J4) are summarized, they are respectively connected to the end of the horizontal horizontal bone pipe (X) and the end of the vertical bone pipe (Z). At least two orthogonally extending leg barrels (6X), (16X), (26X), (6Z), (16Z), (26Z) to be press-fitted and integrated, and the orthogonal leg barrels (6X) (16X) are provided. (26X) (6Z) (16Z) (26Z) A horizontal connecting fork plate (7L) that receives the connecting plate (2) of the rotating pipe joint (J) in another direction that is further perpendicular to the intersection of the members. It can be said that at least one of (17L), (27L), (7R), (17R), and (27R) is a correspondingly protruding form.

  Openings are formed in the connecting fork plate pieces (7L) (7R) (17L) (17R) (27L) (27R) of the first to fourth fixed pipe joints (J1) (J2) (J3) (J4). Vertical shaft receiving holes (9), (9), (11), (11), (13) and (13), and a vertical shaft receiving hole (5) opening in the connecting plate piece (2) of the rotary pipe joint (J). The vertical and horizontal bone pipe (Y) is rotatable to the first to fourth fixed pipe joints (J1) (J2) (J3) (J4) by skewing and penetrating one kind of vertical axis (P). It will be pivotally connected to.

  Moreover, in such a pivoted connection state, the connecting fork plate pieces (7L) (7R) (17L) (17R) (27L) (27R) of the first to fourth fixed pipe joints (J1) to (J4) are turned. The press-fitting depth regulating flange (3) of the dynamic pipe joint (J) is kept in a flush and aligned state with the same diameter.

  As the vertical axis (P), a pin, a rivet, a screw fastener between a bolt and a nut, or the like can be adopted. In any case, the upper and lower ends thereof are connected to the first to fourth fixed pipe joints (J1) (J2). (J3) (7L) (7R) (17L) (17R) (27L) (27R) vertical axis receiving holes (9) (9) (11) (11) (13) (13) of (J4) 13) By sinking into the inside, the connecting fork plate pieces (7L) (7R) (17L) (17R) (27L) (27R) and the above-mentioned connecting plate piece (2) are pivotally connected to the connecting plate piece (2). The rotation-preventing cover sleeve can be smoothly inserted into and retracted so that it can be smoothly advanced and retracted.

  In making the jungle gym of the present invention three-dimensionally from such components, a pair of rotating pipe joints (J) are attached to the left and right ends of each vertical horizontal bone pipe (Y) in advance. As shown in the plan view of FIG. 2, the one-way rotation permissible surfaces (4), which are cut out in the connecting plate pieces (2), are press-fitted and integrated in such a relationship that they are opposite to each other.

  Corresponding to the intersections that form the lower center cubic frame (A), the lower left cubic frame (B1), the lower right cubic frame (B2), and the upper cubic frame (C) as shown in FIGS. The first to fourth fixed pipe joints (J1), (J2), (J3), and (J4) in the directional form are inserted and used to press-fit into the horizontal horizontal bone pipe (X) and the vertical bone pipe (Z) at each intersection. The integrated first to fourth fixed pipe joints (J1), (J2), (J3) and (J4) and the rotating pipe joint (J) attached to the vertical and horizontal bone pipe (Y) are combined with a vertical bone pipe. It is pivotally connected so that it can rotate about 90 degrees by a vertical axis (P) parallel to (Z).

  That is, a total of four first fixed pipe joints (J1) are used at the lower end of the vertical bone pipe (Z) forming the lower middle cubic frame (A), and each of the first fixed pipe joints (J1) is used. Of the leg tube (6Z) (6X) into the vertical bone pipe (Z) and the horizontal horizontal bone pipe (X), and the connecting fork plate piece (7L) facing the first fixed pipe joint (J1). (7R) and the connecting plate piece (2) of the rotating pipe joint (J) attached to the left and right ends of the vertical and horizontal bone pipe (Y) are each turned by about 90 degrees by the vertical axis (P). It is pivotally connected so as to be movable, and is framed in a plan view square formed by a pair of front and rear vertical and horizontal bone pipes (Y) and a pair of left and right horizontal and horizontal bone pipes (X).

  In addition, a total of four second fixed pipe joints (J2) are used at the upper end of the vertical bone pipe (Z) that also forms the lower middle cubic frame (A), and each of the second fixed pipe joints (J2) is used. ) Are press-fitted and integrated into the vertical bone pipe (Z) and the horizontal horizontal bone pipe (X), and the connecting fork plate piece (17L) facing the second fixed pipe joint (J2). ) (17R) and the connecting plate piece (2) of the rotary pipe joint (J) attached to the left and right ends of the vertical and horizontal bone pipe (Y) by about 90 degrees by the vertical axis (P). It is pivotally connected so as to be rotatable, and is also framed into a square in a plan view composed of a pair of front and rear vertical bone pipes (Y) and a pair of left and right horizontal horizontal bone pipes (X).

  On the other hand, a total of two third and fourth fixed pipe joints (J3) and (J4) are used at the upper end of the vertical bone pipe (Z) forming the upper cubic frame (C). The two pipes (26Z) and (26X) of the fixed pipe joints (J3) and (J4) are press-fitted and integrated into the vertical bone pipe (Z) and the horizontal horizontal bone pipe (X), respectively, and the third fixed pipe joint (J3) And the connection between the connecting fork plate pieces (27L) (27R) facing each other of the fourth fixed pipe joint (J4) and the rotating pipe joint (J) attached to the left and right ends of the vertical and horizontal bone pipe (Y). The plate pieces (2) are pivotally connected to each other so as to be rotatable by about 90 degrees about the vertical axis (P), and a pair of front and rear vertical bone pipes (Y) and a pair of left and right horizontal horizontal bone pipes ( X) and a frame in a plan view square consisting of The lower end portion of the vertical bone pipe (Z) is press-fitted and integrated from the second fixed pipe joint (J2) into the upward leg tube (16Z), so that the upper cubic frame (C) is connected to the lower central cubic frame ( Assemble in a laminated state to A).

  Then, the upper cubic frame (C) and the lower central cubic frame (A), which form a square in plan view, are integrated with the vertical axis (P) at the four corners as a pivot point as shown in FIGS. And the adjacent horizontal and horizontal bone pipes (Y) and horizontal and horizontal bone pipes (X) can be in a flat folded state in which the adjacent horizontal and horizontal bone pipes (X) closely contact each other in parallel.

  Further, a total of four third and fourth fixed pipe joints (J3) (J4) are provided at both upper and lower ends of the vertical bone pipe (Z) forming the lower left cube frame (B1) and the lower right cube frame (B2). And press-fit the two leg tubes (26Z) (26X) of the third and fourth fixed pipe joints (J3) (J4) into the vertical bone pipe (Z) and the horizontal horizontal bone pipe (X), respectively. To the connecting fork plate pieces (27L) (27R) of the third and fourth fixed pipe joints (J3) and (J4) of the rotating pipe joint (J) attached to one end of the vertical horizontal bone pipe (Y). The connecting plate pieces (2) are pivotally connected so as to be able to rotate about 90 degrees about the vertical axis (P), respectively. Connect the connecting plate piece (2) of the rotating pipe joint (J) attached to the end to the first and second fixing The connecting forks (7L), (7R), (17L) and (17R) of the joints (J1) and (J2) facing each other are pivotally connected by a vertical axis (P) so as to be rotatable by about 90 degrees. Then, the lower left cubic frame (B1) and the lower right cubic frame (B2) are assembled side by side with the lower central cubic frame (A).

  Then, not only the vertical bone pipe (Z) of the lower center cubic frame (A) but also the horizontal horizontal bone pipe (X) is used, and the lower left cubic frame (B1) formed into a square in plan view and the lower tier. As is clear from FIGS. 43 to 47, the right-side cubic frame (B2) is closed separately with the vertical axes (P) at its four corners as pivot points, and adjacent to the vertical and horizontal bone pipe (Y). The horizontal bone pipe (X) may be in a flat folded state in which it is also closely in parallel.

  However, when viewed from a plane as shown in FIG. 4, the vertical and horizontal bone pipes (Y) of a total of three stages, one pair before and after the lower center cubic frame (A) and the upper cubic frame (C) are framed in a square, The rotation-allowing surface (4) of the connecting plate piece (2) projecting from the side of the attached rotation pipe joint (J) at both left and right ends thereof has one diagonal line (F1-F1) of a square (the right-upward in FIG. 4). Those located on the diagonal line) are oriented on the corner (inward turning direction), and are located on the other diagonal line (R1-R1) of the square (the diagonal line falling rightward in FIG. 4). The competitors are in a relational state in which they are directed toward the outside corner (the outward turning direction), whereby the direction of folding and closing is defined in advance.

  On the other hand, each of the lower left cube frame (B1) and the lower right cube frame (B2) is also squarely framed. The connecting plate piece (2) projecting from the side of the rotating pipe joint (J) attached thereto has a rotation allowing surface (4) opposite to the lower center cubic frame (A) side and the upper cubic frame (C) side. As the orientation, those positioned on one diagonal line (F2-F2) of the square (inclined diagonal line rising to the right in the figure) are oriented toward the outside corner (rotation direction outward), and the other diagonal line of the square is used. Those located on (R2-R2) (the diagonal line inclined downward to the right in the figure) are in a relational state in which they are directed to the corner (inward turning direction), whereby the lower left cubic frame (B1) One of the lower right cubic frame (B2) Folding and flattening are performed in such a manner as to be in close contact with the front surface of the lower center cubic frame (A) that has been folded earlier, and the remaining portion is also being foldable and flattening in close contact with the rear surface of the lower central cubic frame (A). -ing

  Regarding the arrangement directionality of the vertical and horizontal bone pipes (Y), the rotation permissible surface (4) on the side of the rotation pipe joint (J), which is press-fitted integrally at the left and right ends, is as shown in FIG. The vertical and horizontal bone pipes (Y), which are opposite to each other when viewed from a flat surface, are connected to the lower center cubic frame (A), the upper cubic frame (C), and the lower left cubic as shown in FIG. In the framework of the frame (B1) and the lower right cubic frame (B2), the front row and the rear row are alternately turned left and right, and the front row and the rear row are staggered in the left and right directions. By using, it can be easily defined.

  Next, (E) is a special rotary pipe joint with a lock pin (14), which has the same shape, dimensions and material as the above-mentioned rotary pipe joint (J), so that the lock pin (14) is provided. Although it can be used interchangeably with the rotary pipe joint (J) without 14), the inside of the connecting plate piece (2) communicates with the leg tube (1) as shown in FIGS. A pair of front and rear spring receiving grooves (15F) and (15R) are cut out, and both free ends of a leaf spring (18) bent in a substantially U-shape in plan view are separated from the leg cylinder (1) by: The connecting plate piece (2) is in a buried state inserted and locked into both spring receiving grooves (15F) and (15R).

  In addition, the conical head of the lock pin (14) planted and integrated at one end (in the case of the example in the drawing) of the leaf spring (18) or at both ends of the separation is formed by the special rotary pipe joint (E). Through an indentation hole (19) formed corresponding to the connecting plate piece (2), the locking pin is maintained in a state of being elastically biased to always project horizontally from the front surface and / or the rear surface of the connecting plate member (2). Unless the guardian of the infant or the like forcibly pushes the head of (14) with the fingertip, the head does not enter the hole (19).

  Therefore, there is no danger that the leaf spring (18) will fall out of the spring receiving grooves (15F) (15R) of the connecting plate piece (2) and fall off, and the lock pin (14) will be directed forward and / or rearward. As a result of the installation state, the vertical axis (P) is perpendicular to the vertical axis (P), so that there is no danger of being inadvertently pushed and immersed by the feet of the infant while the jungle gym is being deployed.

  (S) is a rotation stopping cover sleeve made of the same hard synthetic resin used in combination with the special rotating pipe joint (E) having the lock pin (14), and the special rotating pipe joint (E). ) And the first to fourth fixed pipe joints (J1), (J2), (J3), and (J4). It is slidably inserted into the bone pipe (Y) in advance and fitted. Reference numeral (20) denotes a lock pin receiving hole which is detachably engaged with the lock pin (14) of the special rotary pipe joint (E), and is opened corresponding to the circumferential surface of the cover sleeve (S). .

  In the jungle gym of the basic embodiment shown in FIGS. 1 to 4, third and fourth fixed pipe joints (J3) are provided above the lower left and right cubic frames (B1) and (B2) and above the upper cubic frame (A), respectively. In view of the fact that deformation is most likely to occur at the intersection point where (J4) is interposed, a special rotary pipe joint (E) with the lock pin (14) is attached only to the upper parallel vertical and horizontal bone pipe (Y). The joint is press-fitted and integrated by replacing the rotary pipe joint (J) without the lock pin (14), and the special rotary pipe joint ( As shown in FIGS. 28 to 34, the connecting plate piece (2) of (E) is connected to the connecting fork plate pieces (27L) (27R) of the third and fourth fixed pipe joints (J3) and (J4) via the vertical axis (P). ) And each is pivotally connected.

  Then, the lock pin (14) attached to such a special rotary pipe joint (E) is inserted into the protruding hole (19) of the connecting plate piece (2) against the expanding urging force of the leaf spring (18). As shown in FIGS. 28 to 31, the cover sleeve (S) is connected to the connecting plate piece (E) of the special rotary pipe joint (E) from above the vertical horizontal bone pipe (Y) on which the cover sleeve (S) is fitted. 2) and the third and fourth fixed pipe joints (J3) (J4) are advanced so as to straddle the connecting fork plate pieces (27L) and (27R) respectively, and the connecting plate piece (2) and the connecting fork plate At the end of covering the pivotal connection with the pieces (27L) and (27R), the lock pin (14) of the special rotary pipe joint (E) engages with the lock pin receiving hole (20) of the cover sleeve (S). ).

  As a result, in the deployed and used state of the jungle gym as shown in FIGS. 1 to 4 and FIGS. 28 to 31, the special rotating pipe joint (E) with the lock pin (14) is secured by the cover sleeve (S). The square in a plan view, which is fixedly and non-rotatably fixed to the fixed pipe joints (J3) and (J4) and is framed by the vertical horizontal bone pipe (Y) and the horizontal horizontal bone pipe (X), is a diagonal line thereof. Although there is a strong external force along the line, there is no possibility that the diamond shape will be deformed or deformed illegally, and a shape-retaining strength against the external force can be obtained.

  Since the cover sleeve (S) itself is engaged with the lock pin (14) of the rotary pipe joint (E) through the lock pin receiving hole (20), the rotary pipe The connecting plate piece (2) of the joint (E) and the connecting fork plate pieces (27L) (27R) of the third and fourth fixed pipe joints (J3) and (J4) respectively pivot via the vertical axis (P). There is no danger of accidentally slipping out or slipping out of the connected part.

  In that sense, the safety of the infant during the deployment and use of the jungle gym can be ensured. On the circumferential surface of the cover sleeve (S), arrow marks (21) and (22) indicating forward / backward operation and rotation operation as shown in FIGS. It is preferable to keep it. By the guidance of the arrow marks (21) and (22), the lock pin (14) of the rotating pipe joint (E) and the lock pin receiving hole (20) of the cover sleeve (S) can be easily and correctly matched. In addition to improving the controllability, the unevenness (23) can keep the infant's foot in a non-slip state, which contributes to safety.

  On the other hand, the lock pin (14) is also pushed into and retracted from the hole (19) of the connecting plate piece (2) in the special rotating pipe joint (E), and the cover sleeve (S) is connected to the connecting plate piece (E). From the pivotal connection between the connecting fork plate pieces (27L) and (27R) in the second and third and fourth fixed pipe joints (J3) and (J4), as shown in FIGS. 34, the special rotary pipe joint (E) can be rotated by about 90 degrees around the fulcrum of the vertical axis (P), and the third and fourth fixed pipe joints (E) in FIG. It goes without saying that the folded state of J3) and (J4) can be obtained.

  Further, reference numeral (G) in FIGS. 1 and 2 denotes a total of four grounding boards which are attached so as to cross over the intersection of the jungle gym having an inverted T-shape in a front view. The first fixed pipe joint (J1) as shown in FIGS. 35 to 37 is integrally formed from a synthetic resin in a form substantially corresponding to the first fixed pipe joint (J1). Gives effective tension resistance.

  That is, the grounding board (G) has an inverted T-shape as viewed from the front, and a vertical mounting sheath tube (24) which is inserted and inserted into the vertical bone pipe (Z) in advance, and the first fixing member is provided from the lower end thereof. A pair of left and right arc-shaped cover pieces (25L) and (25R) that are continuously and integrally extended by a fixed length (L4) substantially corresponding to both connecting fork plate pieces (7L) and (7R) of the pipe joint (J1); A horizontal horizontal bone pipe escaping groove (28) cut out in an arc shape that opens downward is provided on the front side or the rear side of the center portion of both cover pieces (25L) and (25R). From the pieces (25L) and (25R), a wide tension stay (29) is continuously and unitarily stretched by a predetermined length (L5) toward the rear or the front opposite to the horizontal horizontal bone pipe escape groove (28). Has been issued.

  Then, the mounting sheath tube (24) of such a grounding board (G) is lowered along the vertical bone pipe (Z), and both the arc-shaped cover pieces (25L) (25R) of the grounding board (G) are attached to the above-mentioned grounding board (G). The first fixed pipe joint (J1) is covered with the corresponding two connecting fork plate pieces (7L) (7R) of the first fixed pipe joint (J1) from above as shown in FIGS. In addition to restraining the rotating pipe joint (J), which is pivotally connected to the two connecting fork plate pieces (7L) (7R) via the vertical shaft (P), from being accidentally folded and closed, The stay (29) of the grounding board (G) is maintained in a grounding state in which the stay (29) projects in the front-rear direction from the jungle gym.

  Such a grounding board (G) can be used without distinguishing front and rear directions. (30) indicates a plurality of vertical reinforcing ribs projecting inward from the opening edge of the mounting sheath tube (24).

  The slide (31), the stairs (32) and the top plate (33) as shown in FIG. 38 are detachably engaged with the lower left cubic frame (B1) or the lower right cubic frame (B2) of the jungle gym. By doing so, it is also possible to give the jungle gym a change of interest in use and added value.

  That is, the slide (31) is integrally formed from a hard synthetic resin into a substantially U-shaped cross section, and its upper end portion serves as a locking hook (31a) bent in an arc shape to form the vertical and horizontal bone pipe ( In addition to the latching hook (31a), a pair of parallel nail receiving holes (31b) are cut out in the locking hook (31a).

  The stairs (32) are also made of a hard synthetic resin, and the upper ends thereof are also engaged with the vertical and horizontal bone pipes (Y) of the jungle gym as engaging hooks (32a) bent in an arc shape. In addition, a pair of claw receiving ports (32b) arranged in parallel with the locking hooks (32a) are cut out.

  As shown in FIG. 39, the top plate (33) is formed of a square having a size such that the lower left cubic frame (B1) or the lower right cubic frame (B2) of the jungle gym can be covered from above. As shown in FIG. 40, a pair of locking claws (33a), which are formed from a synthetic resin, and which hang down continuously from the periphery thereof, are first locked to the vertical horizontal bone pipe (Y) of the jungle gym. Through the nail receiving opening (31b) of the slide (31) and the nail receiving opening (32b) of the stair (32) also locked to the vertical and horizontal bone pipe (Y). The bone pipe (Y) and the horizontal horizontal bone pipe (X) are detachably engaged with each other.

  For this reason, the slide (31) and the stairs (32) are connected to the above-mentioned jungle by the top plate (33) in combination with the elastic pressure of the locking claw (33a) against the vertical and horizontal horizontal bone pipes (Y) and (X). The gym can be pressed and fixed simultaneously from above to the lower left cube frame (B1) or the lower right cube frame (B2) of the gym, and the lower left cube frame (B1) or the lower right cube frame (B2) is inadvertent. In addition to preventing the possibility of flattening and flattening, it is also useful for preventing the possibility of distortion and deformation from a square in plan view to an incorrect diamond shape.

  FIGS. 1 to 4 show the deployed and used state of the jungle gym according to the present invention. The inverted L in front view is located above the lower left and right cubic frames (B1) and (B2) and above the upper cubic frame (A). As for the horizontal connecting fork plate pieces (27L) and (27R) of the third and fourth fixed pipe joints (J3) and (J4) interposed respectively, the special rotation with the lock pin (14) is used. As shown in FIGS. 28 to 31, the connecting plate pieces (2) of the pipe joint (E) are pivotally connected via vertical axes (P), respectively, and the cover sleeve (S) is connected to the pivot connecting portions. Is kept in a fixed state covered with a coating.

  In this case, the horizontal connecting fork plate pieces of the third and fourth fixed pipe joints (J3) and (J4) intervening as L-shapes as viewed from the front below the lower left and right cubic frames (B1) and (B2). 27L) and (27R), the horizontal connecting fork plate pieces (7L) and (7R) of the first fixed pipe joint (J1) interposed at the intersection forming an inverted T-shape as viewed from the front, and a cross as viewed from the front. As shown in FIGS. 1 to 4, each of the horizontal connecting fork plate pieces (17L) (17R) of the second fixed pipe joint (J2) interposed at the intersection formed with the lock pin (14). The connecting plate piece (2) of the rotating pipe joint (J) that is not provided is also in a state of being pivotally connected via the vertical axis (P).

  Therefore, when the jungle gym is folded from the deployed and used state, as shown in FIGS. 41 and 42, a total of four grounding boards (G) are connected from the first fixed pipe joint (J1) to the vertical bone pipe (Z). Surface along. If the slide (31), the stairs (32), and the top plate (33) are used as accessories, remove them.

  Further, cover sleeves (S) which are respectively coated on pivotal connection portions of the special rotary pipe joint (E) with the lock pin (14) and the third and fourth fixed pipe joints (J3) (J4). Is retracted onto the vertical and horizontal bone pipe (Y) as shown in FIGS. 28 to 31 from FIGS. 28 to 31 to pivot the connecting plate piece (2) and the connecting fork plate pieces (27L) (27R). The connecting portion is kept in the same exposed state as the pivot connecting portion between the other first and second fixed pipe joints (J1) and (J2) and the turning pipe joint (J) without the lock pin (14).

  Then, the upper cubic frame (C) and the lower central cubic frame (A), which are three-dimensionally shaped into a square in a plan view, are defined with the vertical axes (P) scattered and distributed at the four corners as pivot points. They are closed together.

  Then, the adjacent vertical and horizontal bone pipes (Y) and horizontal horizontal bone pipes (X) forming the upper cubic frame (C) and the lower cubic central cubic frame (A) are formed through an intermediate process in FIG. 44 to 47, which are in a folded state in which they are in close contact in parallel with each other, and one of the lower left-side cubic frame (B1) and the lower right-side cubic frame (B2) (in the example shown in FIG. The right-side cubic frame) is directed to the front of the lower center cubic frame (A) that has been folded earlier, and the other (the lower left cubic frame in the example in the figure) is also directed to the rear surface of the lower central cubic frame (A). It becomes a positional relationship approaching separately.

  Therefore, the lower left cubic frame (B1) and the lower right cubic frame (B2) are successively closed with the vertical axes (P) at the four corners as pivot points as shown in FIGS. 43 to 47, respectively. The adjacent vertical and horizontal bone pipes (Y) and horizontal and horizontal bone pipes (X) are folded and flattened so as to be in parallel and close contact with each other, and also close to the front and rear faces of the lower center cubic frame (A). Just do it.

  The overall folded state of the jungle gym is as shown in FIGS. 44 to 47, and as is apparent from this, the connecting fork plate pieces of the first to fourth fixed pipe joints (J1) (J2) (J3) (J4). (7L) (7R) (17L) (17R) (27L) (27R) is extended by the thickness (D) of the vertical and horizontal bone pipe (Y). The vertical and horizontal bone pipes (Y) and the horizontal and horizontal bone pipes (X) forming the frame (A) and the upper cubic frame (C) and the lower left and right cubic frames (B1) and (B2) are extremely flat and closely adhered. A good folded state can be obtained.

  As a result, by setting the working length of the slide (31) to be shorter than or equal to the lamination height of the lower center cubic frame (A) and the upper cubic frame (C), the present invention is improved. The entire jungle gym and its accessories, such as the slide (31), the stairs (32), and the top plate (33), can be packaged and transported together in a flat rectangular parallelepiped shape. It is possible to store and keep it compact and compact in a narrow closet, etc., which is excellent in convenience.

  The lock pin (14) of the special rotary pipe joint (E) has a conical head, and is provided with a hole (19) by a leaf spring (18) embedded in the connecting plate piece (2). 34, the special rotating pipe joint (E) is attached to the third and fourth fixed pipe joints (J3) and (J4) in FIG. As described above, when the folding operation is performed around the fulcrum of the vertical axis (P), the lock pin (14) is turned by the third and fourth fixed pipe joints (J3) and (J4) in the process of rotating by about 90 degrees. The connecting fork plate pieces (27L) and (27R) are automatically pushed into and immersed therein. As a result, there is no hindrance in the conversion operation between folding and unfolding in the jungle gym.

  Further, since the rotation-preventing cover sleeve (S) is inserted and fitted into the vertical and horizontal bone pipe (Y), and the grounding board (G) is also inserted and fitted into the vertical bone pipe (Z). There is no worry about losing them.

  In the above description, the upper cube frame (C) and the lower center cube frame (A) are folded, and a series of lower left / right cube frames (B1) and (B2) are folded. The order can be reversed, and can be set appropriately by the user, and it is not impossible to fold the whole at once. It goes without saying that if the operation order from the expanded use state to the folded state is performed in the reverse direction, the folded state can be returned and converted to the expanded use state.

  The jungle gym of the basic embodiment shown in FIGS. 1 to 4 has a lower middle cubic frame (A) and lower left and right cubic frames (B1) (B2) and a lower middle cubic frame (A) arranged in parallel on both sides thereof. From the one upper-stage cubic frame (C) to be laminated, a three-dimensional framework is formed into an overall convex contour shape in a front view, but the cubic frames (A) and (C) are arranged in the vertical positional relationship of the jungle gym. The vertical leg pipes (6Z) (16Z) (26Z) of the first to fourth fixed pipe joints (J1) (J2) (J3) (J4) which are press-fitted integrally with the vertical bone pipes (Z) to be formed. , So to speak, will be unified.

  Therefore, for example, two or more jungle gyms in which the uppermost cubic frame (C1) is further laminated on the upper cubic frame (C) as shown in the modified embodiment of FIG. 48, the lower left / right cubic frame (B1) ( Even in the case of two or more jungle gyms (not shown) in which one or both of B2) and the upper cubic frames are stacked in a parallel state, the same folding operation as in the above-described basic embodiment is performed. The whole small and flat folded state conforming to 44 to 47 can be obtained, which belongs to the category of the present invention.

  However, unlike the above-described basic embodiment of FIGS. 1 to 4, in the jungle gym of the modified embodiment illustrated in FIG. 48, the upper cubic frame (C) and the uppermost cubic frame (C 1) laminated thereon are different from each other. Since the intersections at the four corners of the above have a T-shape in a horizontal direction when viewed from the front, the vertical leg tube (26Z) in the third and fourth fixed pipe joints (J3) and (J4) of the above basic embodiment is, so to speak, Special fifth and sixth fixed pipe joints (J5) and (J6) as shown in FIGS. 49 and 50, which are increased downward, are also prepared and used to be inserted at the intersections forming a laterally T-shaped front view.

  In other words, the two types of the fifth and sixth fixed pipe joints (J5) and (J6) are so-called three-way joints that turn around in a so-called left-handed manner and right-handed one. 36Z) (36Z) and a horizontal leg tube (36X) intersecting in a horizontal T-shape as viewed from the front, and a substantially vertical horizontal bone pipe (only from the intersection to the left or right side). It also has one horizontal connecting fork plate piece (37L) (37R) projecting by the thickness (D) of Y), and can be used without distinction in the vertical direction. (34) is a circular press-fit depth regulating flange that protrudes from the base end of each of the leg barrels (36X), (36Z), and (36Z), and (35) is a protruding tip of the connecting fork plate pieces (37L) and (37R). This is a vertical shaft receiving hole formed through the portion.

  Therefore, the horizontal leg pipe (36X) of the fifth and sixth fixed pipe joints (J5) and (J6) is press-fitted and integrated into one end of the horizontal horizontal bone pipe (X), and a pair of upper and lower vertical leg pipes is similarly formed. (36Z) (36Z) is press-fitted and integrated into the vertical bone pipes (Z) of the uppermost cubic frame (C1) and the upper cubic frame (C).

  On the other hand, the horizontal connecting fork plate pieces (37L) and (37R) of the fifth and sixth fixed pipe joints (J5) and (J6) have vertical and horizontal bones similar to the third and fourth fixed pipe joints (J3) and (J4). The pivot pipe joint (J) attached to the pipe (Y) and the connecting plate piece (2) of the special pivot pipe joint (E) with the lock pin (14) to be replaced therewith are also vertically attached. It can be pivotally connected by a shaft (P).

  In addition, the rotation-preventing cover sleeve (S) previously inserted and fitted into the vertical and horizontal bone pipe (Y) is connected to the special rotation pipe joint (E) and the fifth and sixth fixed pipe joints (J5). ) And (J6), the lock pin (14) of the special rotary pipe joint (E) and the lock pin of the cover sleeve (S) are advanced to the covering state as shown in FIG. By engaging the receiving hole (20), it is also possible to fix and maintain the rotating pipe joint (E) so as not to rotate.

  If it does so, even if it is a jungle gym with two or more steps shown in the modified embodiment of FIG. 48, it is possible to obtain a deployed use state rich in shape retention strength and rigidity that does not illegally deform and deform.

  In the illustrated embodiment, a special rotary pipe joint (E) with a lock pin (14) is used for the third and fourth fixed pipe joints (J3) and (J4) and the fifth and sixth fixed pipe joints (J5) ( J6) is replaced with a rotary pipe joint (J) having no lock pin (14) and is pivotally connected by a vertical axis (P). However, the first and second fixed pipe joints (J1) (J2) ), The special pivot pipe joint (E) with the lock pin (14) is replaced with the pivot pipe joint (J) without the lock pin (14), and the pivot joint is similarly connected. Of course, all the intersections of the jungle gym may be locked in a fixed state to improve the overall rigidity and the shape retention strength of the deployed and used state.

FIG. 3 is a perspective view illustrating a deployed use state of the jungle gym according to the present invention. It is a front view of FIG. FIG. 2 is a plan view of FIG. 1. FIG. 4 is a sectional view taken along line 4-4 of FIG. 2. It is a top view which shows the vertical and horizontal bone pipe in which the rotation pipe joint was inserted and integrated at both ends. It is an inclined view which extracts and shows a rotation pipe joint. It is a slope view which extracts and shows a 1st fixed pipe joint. FIG. 3 is a partially enlarged front view illustrating an inverted T-shaped intersection shown in FIG. 2. FIG. 9 is a sectional view taken along line 9-9 in FIG. 8. FIG. 10 is a sectional view taken along line 10-10 of FIG. 8. FIG. 11 is a sectional view of the folded state in which the vertical horizontal bone pipe is closed to the horizontal horizontal bone pipe from FIG. 10. It is a slope view which extracts and shows a 2nd fixed pipe joint. FIG. 3 is a partially enlarged front view showing extracted cross-shaped intersections in FIG. 2. FIG. 14 is a sectional view taken along line 14-14 of FIG. 13. FIG. 15 is a sectional view taken along line 15-15 of FIG. 13. FIG. 16 is a sectional view of the folded state in which the vertical horizontal bone pipe is closed to the horizontal horizontal bone pipe from FIG. 15. It is a slope view which extracts and shows a 3rd fixed pipe joint. It is a slope view which extracts and shows a 4th fixed pipe joint. FIG. 3 is a partially enlarged front view showing an extracted L-shaped intersection of FIG. 2. FIG. 20 is a sectional view taken along line 20-20 of FIG. 19. FIG. 20 is a sectional view taken along line 21-21 of FIG. 19. FIG. 22 is a sectional view of the folded state in which the vertical horizontal bone pipe is closed to the horizontal horizontal bone pipe from FIG. 21. It is a slope view which extracts and shows the special rotation pipe joint with a lock pin. FIG. 24 is a side view of FIG. 23. FIG. 25 is a sectional view taken along line 25-25 of FIG. 24. FIG. 26 is a sectional view taken along line 26-26 of FIG. 24. FIG. 27 is a sectional view taken along line 27-27 of FIG. 25. FIG. 2 is a partial enlarged plan view extracting and showing intersections between upper and lower third and fourth fixed pipe joints in the lower left / right cubic frame and the upper cubic frame in FIG. 1. FIG. 29 is a front view of FIG. 28. FIG. 30 is a sectional view taken along line 30-30 of FIG. 29. FIG. 31 is a sectional view taken along line 31-31 of FIG. 28. FIG. 29 is a plan view showing a state where the cover sleeve has been retracted from FIG. 28. FIG. 31 is a cross-sectional view corresponding to FIG. 30 in a state where the cover sleeve has been retracted. FIG. 34 is a cross-sectional view of the state where the vertical and horizontal bone pipe is folded and rotated from FIG. 33. FIG. 3 is an enlarged sectional view taken along line 35-35 of FIG. 2. It is a top view which extracts and shows a grounding board. FIG. 37 is a sectional view taken along line 37-37 of FIG. 36. It is a top view corresponding to FIG. 3 which shows the attachment state of the grounding board, a slide, a stair, and a top board with respect to a jungle gym. It is a bottom view which extracts and shows the top plate of FIG. FIG. 40 is an enlarged sectional view taken along line 40-40 of FIG. 38. FIG. 2 is a perspective view corresponding to FIG. 1 and showing a jungle gym in a state ready for folding. FIG. 42 is a front view of FIG. 41. FIG. 5 is a cross-sectional plan view showing a halfway process of folding from FIG. 4. It is a slope view showing the jungle gym in a folded state. FIG. 45 is a side view of FIG. 44. FIG. 46 is a plan view of FIG. 45. FIG. 46 is a sectional view taken along line 47-47 of FIG. 45. FIG. 3 is a perspective view showing a modified embodiment of the present invention corresponding to FIG. 1. It is a slope view which extracts and shows a 5th fixed pipe joint. It is a slope view which extracts and shows a 6th fixed pipe joint. FIG. 50 is a partially enlarged front view illustrating an intersection point where fifth and sixth fixed pipe joints of FIG. 48 are interposed.

Explanation of reference numerals

(1) ・ Legs (2) ・ Connecting plate pieces (3) (5) (8) (9) (10) (11) (13) (35) ・ Vertical shaft receiving hole (4) ・ Rotation allowable surface (6X) (6Z) (16X) (16Z) (26X) (26Z) (36X) (36Z) ・ Legs (7L) (7R) (17L) (17R) (27L) (27R) (37L) (37R) ) ・ Connecting fork plate piece (12) (34) ・ Press-fit depth regulating flange (14) ・ Lock pin (15F) (15R) ・ Spring receiving groove (18) ・ Leaf spring (19) ・ Protrusion hole (20)・ Lock pin receiving hole (21) (22) ・ Arrow mark (23) ・ Unevenness for non-slip (31) ・ Slide (32) ・ Stairs (33) ・ Top plate (A) ・ Lower center cubic frame (B1) ・Lower left cubic frame (B2), Lower right cubic frame (C), Upper cubic frame (C1) Upper cubic frame (J) (E), rotating pipe joint (J1), first fixed pipe joint (J2), second fixed pipe joint (J3), third fixed pipe joint (J4), fourth fixed pipe joint (J5)-Fifth fixed pipe joint (J6)-Sixth fixed pipe joint (G)-Grounding board (P)-Vertical axis (S)-Cover sleeve (X)-Horizontal horizontal bone pipe (Y)-Vertical and horizontal Bone Pipe (Z) / Vertical Bone Pipe

Claims (7)

Using a plurality of vertical and horizontal bone pipes, a plurality of horizontal and horizontal bone pipes, and a plurality of vertical bone pipes, a frame solid is formed from a plurality of parallel lower cubic frames and at least one upper cubic frame laminated thereon. As a folding jungle gym
While the first to sixth fixed pipe joints of various orientations corresponding to the intersections of the cubic frame are respectively press-fitted and integrated into the end of the horizontal horizontal bone pipe and the end of the vertical bone pipe forming the cubic frame,
Similarly, one type of rotating pipe joint is press-fitted and integrated into both ends of a vertical and horizontal bone pipe that also forms a cube frame,
The pivot pipe joint is pivotally connected to the first to sixth fixed pipe joints so as to be able to pivot by about 90 degrees with respect to the vertical axis, respectively,
That the rotation-preventing cover sleeve is fitted over the vertical and horizontal bone pipe to a pivotal connection between at least one of the first to sixth fixed pipe joints and the rotation pipe joint so as to be able to advance and retreat. Features a folding jungle gym. While implanting a horizontal lock pin that is perpendicular to the vertical axis to the rotating pipe joint in an elastic biasing state that always projects from its surface,
Form the receiving hole of the lock pin corresponding to the circumferential surface of the cover sleeve,
When the cover sleeve is advanced from above the vertical and horizontal bone pipe to the pivot joint portion of at least one of the first to sixth fixed pipe joints and the pivot pipe joint, the lock pin of the pivot pipe joint is turned into the cover sleeve. 2. The foldable jungle gym according to claim 1, wherein the cover sleeve is kept in a state where the cover sleeve is prevented from coming out of the pivotal connection portion and a state in which the cover sleeve is prevented from rotating by engaging with the lock pin receiving hole. From a plurality of vertical and horizontal bone pipes and a plurality of horizontal and horizontal bone pipes and a plurality of vertical bone pipes, as a joint unit for three-dimensionally forming a jungle gym,
A rotating pipe joint in which a horizontal connecting plate piece crossing over the diameter line of the leg cylinder projects from the tip end of the leg cylinder which is press-fitted and integrated into the end of the vertical horizontal bone pipe, and is extended,
From the intersections of at least two directions of orthogonal leg cylinders that are press-fitted and integrated into the end of the horizontal horizontal bone pipe and the end of the vertical bone pipe, respectively, in another direction that is further orthogonal to the plurality of leg cylinders, A fixed pipe joint in which at least one of the horizontal connecting fork plate pieces for receiving the connecting plate pieces of the rotating pipe joint is correspondingly protruded;
A vertical shaft that pivotally connects the rotating pipe joint so as to be able to rotate by about 90 degrees with respect to the fixed pipe joint by being skewered and penetrated into the connecting plate piece and the connecting fork plate piece;
A rotation-preventing cover sleeve, which is slidably inserted into the vertical and horizontal bone pipe and is fitted over the vertical and horizontal bone pipe so as to advance and retreat from the vertical and horizontal bone pipe to the pivotal connection between the connecting plate and the connecting fork plate. ,
By operating the cover sleeve to cover the pivotal connection between the connecting plate piece and the connecting fork plate piece, the rotating pipe joint is fixed and maintained in a non-rotatable jungle gym deployed and used state. on the other hand,
By retreating the cover sleeve from the pivotal connection between the connecting plate piece and the connecting fork plate piece onto the vertical horizontal bone pipe, the rotary pipe joint can be folded around the vertical fulcrum of the vertical axis. A foldable jungle gym joint unit characterized in that: A U-shaped leaf spring in a plan view is embedded in a connecting plate piece of the rotating pipe joint, and a horizontal lock pin having a relation perpendicular to a vertical axis is connected to one or both ends of the leaf spring. While being planted in a resiliently biased state that always protrudes from the front and / or back of the plate pieces,
Form the receiving hole of the lock pin corresponding to the circumferential surface of the cover sleeve,
When the cover sleeve is advanced to the pivot joint between the connecting plate piece of the rotating pipe joint and the connecting fork plate piece of the fixed pipe joint, the lock pin of the rotating pipe joint engages with the lock pin receiving hole. The folding jungle gym joint unit according to claim 3, wherein the cover sleeve is determined so as to keep the cover sleeve in a retaining state and a rotation preventing state. Along with the boundary between the leg tube of the rotating pipe joint and the connecting plate piece, a circular press-fit depth regulating flange of the same thickness as the vertical and horizontal bone pipe is projected, and both front and rear surfaces of the connecting plate piece are the regulating flanges. While forming a flat arc
The connecting fork plate piece of the fixed pipe joint is formed into an arc shape having the same thickness as the press-fit depth regulating flange of the rotating pipe joint, and the upper and lower ends of the vertical axis sink from the surface of the connecting fork plate piece. By
4. The cover sleeve according to claim 3, wherein the cover sleeve is configured to be able to advance and retreat from a vertical horizontal bone pipe to a pivotal connection between the connecting plate piece of the rotating pipe joint and the connecting fork plate piece of the fixed pipe joint. Foldable jungle gym fitting unit. The horizontal connecting plate piece of the rotary pipe joint is formed into a substantially rectangular shape in a plan view with a one-side rotation-allowing surface cut out at the corner of the tip, and the vertical horizontal bone pipe is thickened from the distal end of the barrel. While extending the extension by a certain amount,
The joint unit for a foldable jungle gym according to claim 3, wherein the connecting fork plate piece of the fixed pipe joint protrudes from the intersection of the leg cylinders correspondingly by the thickness of the vertical and horizontal bone pipe.   The rotation-preventing cover sleeve is formed into a cylindrical shape from the same ABS resin or other hard synthetic resin as the rotating pipe joint and the fixed pipe joint, and the directional arrow mark on the circumferential surface and the sliding of the infant are shown. 4. The joint unit for a foldable jungle gym according to claim 3, wherein irregularities for stopping are provided.

Images