JP2009138843A - Joint member of tube part and sectional play instrument for cats - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint member of a tube part that firmly connects a connection portion of a support post, is easy to assemble, and is manufactured at low cost in a sectional play instrument for cats in which the tube part such as a paper tube is used for the support post. <P>SOLUTION: The joint member 7 comprises: an inner tube portion 71 formed in a substantially cylindrical shape corresponding to the inner diameter of the paper tube or another tube part 21 having a circular section; an outer tube portion 72 concentrically formed on the outer side of the inner tube portion 71 at an interval corresponding to the thickness of the tube part 21; a base portion 73 connecting proximal ends of the inner tube portion 71 and the outer tube portion 72; and a flange portion 82 extruded outwardly of the outer tube portion 72. These portions 71, 72, 73, and 82 are integrally formed of synthetic resin. The base portion 73 and the flange portion 82 shares a proximal end surface 83 perpendicular to an axis of the joint member. The flange portion 82 has a plurality of bolt insertion holes 84. An end of the tube part 21 is fitted in a groove between the inner tube portion 71 and the outer tube portion 72. The joint member 7 is connected to a shelf board 3 and/or another joint member 7 via bolt members 26 inserted through the flange portion 82. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a joint member for pipes, and in particular, is a component member of an assembly-type play equipment that is installed indoors so that indoor cats can climb and play, and is a joint member for connecting struts using pipes About. In addition, the present invention relates to an assembling type play equipment for a cat that is assembled using the joint member.

  When cats are bred indoors, it is preferable to install playground equipment having an appropriate height in the room to exercise the cat and relieve stress. Also, cats always have their claws stretched, so it is necessary to prepare a nail sharpening tool with an appropriate hardness so that important furniture and walls cannot be damaged by the claws. Under such circumstances, an assembly-type play equipment for a cat called a cat tower or a scratch tower is conventionally used.

  This type of assembly-type playground equipment is basically composed of one or a plurality of support columns and a plurality of shelves, box-shaped house portions, and the like that are attached to the appropriate positions of the support columns at different heights. The support column is configured by connecting a plurality of column parts formed in a length of about several tens of centimeters in the axial direction. For the material of the pillar part, a lightweight and inexpensive hard paper tube with a thickness of several millimeters is often used. A hemp string, cotton string, etc. are wound around the outer peripheral surface of the paper tube so as to serve as a nail hook for lifting and nail sharpening. When the column is erected up to the ceiling, a height adjusting member is attached to the upper end portion, and the column is fixed in a state where the column is stretched between the floor and the ceiling. A dedicated joint member is used to connect the column parts. Patent Documents 1, 2 and the like disclose a structure for connecting struts in such an assembly-type play equipment for cats.

  FIG. 9 shows a structure for connecting struts described in Patent Document 1. In FIG. The column part 9A has a substantially short cylindrical joint member 903 made of synthetic resin and a substantially dish-shaped cap 904 made of synthetic resin at the end of a pole body formed by winding a cotton string 902 around the outer peripheral surface of the paper tube 901. And is configured. The joint member 903 is fitted into the inner peripheral surface of the paper tube 901 and adhered to the paper tube 901 with an adhesive, and a nail (not shown) is driven from the side and fixed. The cap 904 is placed on the outer side of the cotton string 903, and a plurality of screws 905 are driven in from the end side of the paper tube 901 and are integrally coupled to the joint member 903. A through hole 906 is formed in the shaft center of the joint member 903 and the cap 904, and a metal nut 907 is embedded in the through hole formed in the joint member 903. A cutting bolt 908 is inserted into the through-hole 906 and is screwed into the nut 907 with its substantially half protruding outward. Then, other pillar parts and a shelf board 909 are connected to the protruding portion of the cutting bolt 908.

FIG. 10 shows a structure for connecting struts described in Patent Document 2. In FIG. The column part 9B is configured by fitting a joint member 913 made of a synthetic resin into an end portion of a pole body formed by winding a cotton string 912 around the outer peripheral surface of the paper tube 911. The joint member 913 includes a short cylindrical portion 914 that is inserted inside the paper tube 911, a tray portion 915 that projects from one end of the short cylindrical portion 914, and a shaft of the short cylindrical portion 914 and the tray portion 915. And a female screw hole (not shown) formed in the core. Then, the resin male screw member 916 is screwed into the female screw hole of the joint member 913 fitted into one end of the column parts 9B to be connected, and the extra length portion is the female screw hole of the mating joint member 913. As a result, the pillar parts 9B are connected to each other with a shelf board interposed therebetween.
JP 2002-315465 A Japanese Patent Laid-Open No. 2005-110580

  In each of the strut connection structures described in Patent Documents 1 and 2, a short tube-shaped synthetic resin joint member is fitted inside the paper tube, and the inner peripheral surface of the paper tube and the outer periphery of the joint member The connection strength is obtained by the fitting frictional force with the surface. In the connection structure according to Patent Document 1, the joint member and the paper tube are fixed together using an adhesive and a nail.

  However, since the surface hardness of the paper tube itself is not so high, with such a structure, the paper tube is deformed or damaged each time the weight of the cat is applied, and the connection between the paper tube and the joint member becomes loose, so The whole may gradually wobble.

  In addition, the connection structure of the support | pillar described in patent document 1 is comprised so that the edge part of a paper tube may be inserted | pinched between the joint member fitted inside the paper tube, and the cap covered on the outer side of the paper tube. ing. However, even in this connection structure, the cap placed on the outside of the paper tube covers the outside of the cotton string wound around the outer peripheral surface of the paper tube, and is not firmly fixed to the paper tube. It hardly contributes to the improvement of the connection strength between the paper tube and the joint member. Rather, the configuration of the parts constituting the connecting portion is complicated, increasing costs, and increasing the demerit that it takes time to assemble the support columns.

  In addition, the column connecting structures described in Patent Documents 1 and 2 are both a plurality of column parts, or a column part and a shelf, through one screw member screwed to the shaft center of the joint member. The plate 3 and the like are connected. This connection structure is not sufficient in terms of strength against vibration, and there is room for improvement.

  The present invention has been made in view of the above circumstances, and in particular, when connecting the column parts using the paper tube, the paper tube and the joint member can be firmly connected, and the assembly work is also easy. The present invention also provides a joint member that can be manufactured at low cost, and an assembly-type play equipment for cats that can be assembled using the joint member.

  In order to achieve the above-described object, the present invention first has a substantially cylindrical shape having an outer diameter substantially matching the inner diameter of the tube material as a joint member fitted into an end portion of a paper tube or other tube material having a circular cross section. An outer cylinder part formed concentrically on the outer side of the inner cylinder part and on the outer side of the inner cylinder part with an interval substantially matching the wall thickness of the tube material, and a proximal end side of the inner cylinder part and the outer cylinder part A base part to be connected and a hook-like part protruding from the base part to the outside of the outer cylinder part, and the inner cylinder part, the outer cylinder part, the base part and the hook-like part are integrally formed of a synthetic resin material. The base part and the hook-like part share a base end surface orthogonal to the shaft center, and the pipe-like part is formed with a plurality of bolt insertion holes that penetrate the hook-like part in the axial direction. A member (Claim 1) is adopted.

  According to this joint member, the groove | channel of the space | interval which substantially corresponds to the thickness of a pipe material is formed between an inner cylinder part and an outer cylinder part. When the end portion of the pipe material is fitted into this groove, the inner peripheral surface and the outer peripheral surface of the pipe material are in close contact with the inner cylindrical portion and the outer cylindrical portion of the joint member, respectively, and the pipe material and The joint member is firmly connected.

  In this joint member, the width of the groove into which the pipe material is fitted, that is, the distance between the inner cylinder part and the outer cylinder part is important. In the joint member of the present invention, the inner cylinder part, the outer cylinder part, the base part, and the hook-like part are integrally formed of a synthetic resin material, so that the dimensional accuracy of the gap is ensured at a high level. Further, by integrally molding these parts, the cost of the members can be reduced, and the workability during assembly is also improved. As the molding method, injection molding is particularly suitable, but other known molding methods such as injection molding, reaction injection molding, and the like can be used.

  The joint member has a flange-like portion that protrudes outward from the outer cylinder portion, and the base portion and the flange-like portion share a base end surface that is orthogonal to the axis. Further, a plurality of bolt insertion holes are formed in the bowl-shaped portion. Therefore, in a state where the base end surfaces of the paired joint members are opposed to each other, the bolt members can be inserted into the respective bolt insertion holes and connected in the axial direction. Thus, the connection structure in which a plurality of bolt members are arranged in the region outside the diameter of the pipe material is much stronger than the connection structure with a single screw member screwed into the shaft center portion. Less prone to wobble and loosening.

  In addition, as long as the joint member of the pipe material according to the present invention is a pipe material having a circular cross section having an appropriate thickness, for example, a pipe material made of vinyl chloride or other synthetic resin material, or a wood piece other than a paper tube Also, it can be applied to a tube material made of a material obtained by binding and molding fibers and the like.

  In this joint member, it is preferable that the inner cylinder portion is tightly inserted into the inner peripheral surface of the pipe member so as not to be loosened. Therefore, in the joint member of the present invention, the distal end portion of the inner cylinder portion extends in the axial direction more than the distal end portion of the outer cylinder portion, and the aperture taper that is reduced in diameter toward the distal end is formed at the distal end portion of the inner cylinder portion. (Claim 2). According to this configuration, even when the outer diameter dimension of the inner cylinder portion is matched with the inner diameter dimension of the tube material with high accuracy, it is easy to insert the inner cylinder portion into the tube material.

  The joint member of the present invention is characterized in that a plurality of ribs extending in the axial direction protrude from the inner peripheral surface of the outer tube portion or the outer peripheral surface of the inner tube portion. According to this structure, a rib bites into the surface of the pipe material fitted between the inner cylinder part and the outer cylinder part, and a fitting state becomes still stronger.

  Furthermore, in the present invention, in order to prevent the pipe material fitted into the joint member from coming off, both may be fixed with a screw or a nail member. The nail member also includes a tucker needle. As a configuration for facilitating fixing with a screw or a nail member, a guide groove portion for a screw or a nail member that is driven through the outer tube portion in a radial direction is formed in the outer tube portion of the joint member. The inner cylinder portion may be formed with a thick portion corresponding to the driving position of the screw or nail member (claim 4). According to this configuration, with the tube material inserted between the outer tube portion and the inner tube portion, a screw or a nail member is driven from the outside of the outer tube portion as a mark, and the tube material is penetrated, Since the tip of the screw or nail member can be bitten into the thick part formed in the inner cylinder part, the tube material can be fixed easily and reliably.

  Moreover, in this invention, the base end surfaces of the joint member which makes a pair can be made to oppose, and it can connect in the state which pinched | interposed the shelf 3 between them. At this time, in order to enhance the connectivity between the base end face of the joint member and the shelf board 3, the opening peripheral edge of the bolt insertion hole that opens to the base end face of the bowl-shaped part is projected from the base end face (Claim 5). You may comprise so that the protrusion part may be inserted in the connection hole formed in the shelf board 3. FIG.

  In addition, when connecting the joint members, in order to facilitate the fastening operation of the bolt member inserted into the hook-shaped portion, the opening peripheral edge portion of the bolt insertion hole opened on the front side surface of the hook-shaped portion is immersed more than the front side surface. Thus, the nut member may be configured so as to constrain the idling of the nut member (claim 6). In this configuration, the immersion portion is formed in a shape that sandwiches, for example, the two-surface width of the hexagon nut. By taking such a means, the trouble of pressing the nut at the time of fastening the bolt is reduced, and the assembly work is made efficient.

  In the joint member of the present invention, a connector insertion hole penetrating the shaft center may be formed in the inner cylinder portion, or an insert nut may be embedded. According to this structure, it becomes possible not only to fasten the hook-shaped portions to each other as described above but also to attach an appropriate connector to the position of the shaft center. By utilizing this, for example, a base member can be attached to the lower end of the support column, or a brace can be attached to the top of the support column.

  Further, the present invention is a cat-made play equipment using the above-mentioned pipe joint member, wherein the joint member is fitted into both ends of a paper tube or other pipe material to form pillar parts, and a plurality of pillar parts are formed. The configuration is such that the shelf plate 3 is sandwiched between the base end surfaces of the joint members and is connected in the axial direction via a plurality of bolt members inserted through the flange-shaped portions of the joint members. (Claim 8).

  According to this configuration, it is possible to obtain a strong assembly-type play equipment in which the pillar parts and the shelf board 3 are firmly connected by a simple assembly operation. Since the end portion of the tube material is sandwiched between the inner and outer surfaces by the joint member, even if a load or vibration accompanying the raising and lowering of the cat acts, the tube material is not easily deformed or damaged. Since the joint member and the pipe material are separate bodies, it is possible to make pillar parts of various lengths by adjusting the length of the pipe material.

  Furthermore, the present invention relates to the above-described cat-assembled play equipment, wherein the outer peripheral surface of the tube material is wrapped with hemp string, cotton string and other string-like bodies except for the end portion fitted into the joint member. (Claim 9).

  According to this structure, the nail hook suitable for a cat is formed in the whole outer peripheral surface of a pipe material. Furthermore, a string-like body similar to or similar to the string-like body or a raised cloth may be wound around the outer peripheral surface of the outer cylinder portion of the joint member. According to this, from the peripheral surface of the pipe material to the outer peripheral surface of the outer cylinder portion of the joint member, that is, the entire side surface of the pillar part is covered with the string-like body or the raised cloth, the comfort when the cat moves up and down is further increased. Improves appearance and appearance.

  The joint member of the pipe material of the present invention configured as described above is firmly fitted into an end portion of a paper tube or other pipe material having a circular cross section by a simple insertion operation. Since the joint member is integrally formed by injection molding, the dimensional accuracy of each part is increased, and the joint member is closely fitted in conformity with the wall thickness of the pipe material. Since the joint member itself is formed as a single part, the assembly operation is simplified and the manufacturing cost of the joint member is reduced.

  Moreover, the above-mentioned joint member is inserted into the end portion of the pipe material to form a pillar part, and the assembled play equipment for cats configured by connecting this pillar part together with the shelf board 3 has a structure unique to the joint member described above. The pillar parts are firmly connected to each other. Therefore, excellent stability is exhibited even with respect to the load and vibration accompanying the raising and lowering of the cat, and it can be used without tilting or wobbling for a long period of time. Furthermore, by using the above-described joint member, the assembling operation of the connecting portion can be simplified, and the form change and relocation by recombination can be easily performed. Moreover, since the joint member and the pipe material are separate bodies, pillar parts having various lengths can be made by adjusting only the length of the pipe material.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG.1 and FIG.2 shows the whole structural example of the assembly-type play equipment for cats based on embodiment of this invention. The assembling-type play equipment 1 includes a support column 2 formed by connecting a plurality of column parts 20 in the axial direction, a plurality of shelf boards 3 attached to an intermediate portion of the support column 2, a box-shaped house unit 4, and the like. Based on the structure consisting of One support column 2 can stand alone, or a plurality of support columns 2 can stand side by side. In order to stably fix the independent strut 2 or the tall strut 2, as shown in FIG. 1, an adjuster 5 for height adjustment is attached to the upper end of the strut 2 so that it is between the floor and the ceiling. Tighten and fix. In addition, a slightly larger base plate 6 is attached to the lower end portion of the column 2 in contact with the floor in order to enhance stability. The shelf board 3 can be attached to a single support column 2 in a cantilevered manner, or can be mounted across a plurality of support columns 2. As described above, the assembly-type play equipment 1 can be implemented in various forms other than the configuration examples shown in FIGS. 1 and 2 by combining parts that are parts.

  The individual pillar parts 20 constituting the support column 2 are all the same length in the illustrated form, and joint members 7 made of synthetic resin are provided at both ends of a paper tube having a circular cross section or a similar tube material 21. Installed and configured. The paper tube assumed in the present invention is formed by, for example, compressing and molding a slit base paper obtained by processing recycled used paper into a roll having a diameter of several tens mm and a thickness of several millimeters. In order to improve the strength, the rolled paper tube may be impregnated with resin, or the surface of the paper tube may be coated with resin. In addition to such a paper tube, for example, a tube material such as a vinyl chloride pipe or other synthetic resin tube material, a wood piece, fiber, or the like formed into a circular tube shape can also be used. Moreover, it is also possible to assemble the whole by combining various long and short pillar parts 20 in which the length of the pipe material is changed.

  The main part of the present invention is in the joint member 7 attached to the end of this type of pipe 21. Hereinafter, the structure of the joint member 7 and the fitting structure between the joint member 7 and the pipe material 21 will be described in detail with reference to FIGS.

  The joint member 7 is a member integrally formed by injection molding or the like of a synthetic resin material, and has a substantially cylindrical inner cylinder portion 71 and an outer cylinder portion 72 arranged concentrically. One end of the inner cylinder portion 71 and the outer cylinder portion 72 is coupled via a base portion 73. On the opposite side of the base portion 73, that is, on the distal end side that is not coupled, a groove having a constant interval is provided between the inner cylinder portion 71 and the outer cylinder portion 72. The width of this groove matches the thickness of the tube material 21, and the end of the tube material 21 is inserted therein. The distal end portion of the inner cylinder portion 71 extends slightly in the distal direction than the outer cylinder portion 72, and a diaphragm taper is formed in the distal end portion so that the outer peripheral surface is reduced in diameter toward the distal end.

  The inside of the inner cylinder part 71 has a hollow shape, and a shaft cylinder part 74 having a connector insertion hole is provided at the shaft center thereof. The shaft cylinder portion 74 and the inner cylinder portion 71 are integrally coupled via connecting ribs 75 and 76 that extend radially. The connecting ribs 75 formed in the substantially half on the front end side of the inner cylinder portion 71 are arranged at four positions forming a central angle of 90 degrees around the axis. In addition, the connecting ribs 76 formed on the proximal half of the inner cylinder portion 71 are disposed integrally with the base portion 73 at eight positions having a central angle of 45 degrees. The connector insertion hole formed in the shaft cylinder portion 74 maintains the same diameter in the axial direction and penetrates the entire joint member 7 in the axial direction.

  The outer cylinder part 72 has a shape in which the inner peripheral surface maintains the same diameter and gradually decreases in thickness toward the tip side. A substantially U-shaped depression is formed on the outer peripheral surface of the outer cylindrical portion 72 in a side view, and a guide groove 77 having a substantially V-shaped cross section extending in the axial direction is formed at the center of the depression. The guide groove 77 serves as a mark for driving a pipe fixing screw 78 or a not-shown tacker needle or other nail member, and is slightly thinner than the periphery. The guide groove portions 77 are arranged at four positions having a central angle of 90 degrees. A screw hole may be formed in the guide groove 77 in advance. A thick part 79 is formed on the inner cylinder part 71 facing the guide groove part 77 so as to increase the thickness on the inner side of the inner cylinder part 71 so as to securely fasten the tips of screws 78 and nail members. Has been.

  A thin rib 81 (see FIGS. 4 and 7) extending in the axial direction is formed on either the inner peripheral surface of the outer cylindrical portion 72 or the outer peripheral surface of the inner cylindrical portion 71 so as to protrude into the groove. Yes. The ribs 81 are arranged at four positions having a central angle of 90 degrees.

  Around the base portion 73, a hook-like portion 82 is provided that protrudes outward from the outer cylinder portion 72 over the entire circumference. The base 73 and the bowl-shaped portion 82 share a base end face 83 that is orthogonal to the axis of the inner cylinder 71 and the outer cylinder 72. The base end face 83 is configured by an outer peripheral edge portion of the bowl-shaped portion 82, eight connecting ribs 76 on the base portion 73 side, and an end edge of the shaft tube portion 74. The front side surface of the bowl-shaped portion 82 is expanded in diameter so as to continue from the outer cylinder portion 72 via a curved surface, and the outer peripheral edge portion is curved in a direction parallel to the axial direction through an intermediate portion orthogonal to the axial center. It has a substantially S-shaped cross-sectional shape.

  A bolt insertion hole 84 that penetrates the hook-shaped portion 82 in the axial direction is formed in the intermediate portion of the hook-shaped portion 82. The bolt insertion holes 84 are also arranged at four positions forming a central angle of 90 degrees. The bolt insertion hole 84 opens to the base end face 83 side of the flange-like part 82, and the opening peripheral edge part slightly protrudes from the base end face 83 in the axial direction to form an annular protrusion 85. Moreover, the bolt insertion hole 84 opens to the front side surface side of the bowl-shaped portion 82, and the opening peripheral edge portion is slightly recessed from the front side surface, and the nut member 27 inserted therein is fitted to the bowl-shaped portion 82. It is considered not to protrude on the front side. Furthermore, the immersion portion forms a large and small two-stage rotation stopper recess 86 having an opposing surface portion that sandwiches the two surface widths of the nut member 27.

  As shown in FIGS. 3 and 6, the joint member 7 configured as described above is attached to the tube material 21 so that the end portion of the tube material 21 is sandwiched in the groove between the inner tube portion 71 and the outer tube portion 72. It is done. Since each part of the joint member 7 which is an integrally molded product of a synthetic resin material is formed with high dimensional accuracy, the tube material 21 is firmly brought into close contact with the tube material 21 by a high fitting frictional force. In addition, since a narrowing taper is formed at the distal end portion of the inner cylinder portion 71, even if the difference between the outer diameter size of the inner cylinder portion 71 and the inner diameter size of the tube material 21 is small, the inner cylinder portion 71 is not Can be easily inserted inside. The axial ribs 81 protruding from the inner peripheral surface of the outer cylindrical portion 72 or the outer peripheral surface of the inner cylindrical portion 71 bite into the surface of the tube material 21 inserted into the groove, thereby further strengthening the fitted state. Shall.

  Further, in order to prevent the joint member 7 and the pipe member 21 from being detached, a fixing screw 78 or a tucker needle or the like is driven into the position of the recess 77 formed in the outer cylinder portion 72. The tips of screws 78, Tucker needles, etc. penetrate the tube material 21 and are fastened to the thick part 79 of the inner cylinder part 71.

  In this way, after the joint member 7 is fixed to both ends of the tube material 21, a string-like body 22 that is a cat's claw hook is wound around the outer peripheral surface of the tube material 21. As a material of the string-like body 22, natural fibers such as hemp and cotton, chemical fibers such as nylon and polyester, or a blended product thereof can be used as appropriate. The string-like body 22 is wound around the entire exposed surface of the tube material 21 without a gap except for both ends of the tube material 21 inserted into the groove of the joint member 7, and is bonded to the tube material 21 via an adhesive. The end of the string-like body 22 is terminated, for example, by being pushed into the tube 21.

  In the illustrated embodiment, the outer cylindrical portion 72 of the joint member 7 is wrapped with a raised cloth 23 such as bore, mohair, flannel, and the like, so that the base of the outer cylindrical portion 72 made of a resin material is covered. Alternatively, instead of winding the raised cloth 23, the same string-like body 22 wound around the tube material 21 may be continuously wound up to the outer cylinder portion 72 as it is.

  Thus, the pillar part 20 which comprises the support | pillar 2 of the assembly-type play equipment 1 is formed. In the normal product sales mode, the joint member 7 is fitted to both ends of the tube material 21 at the shipping stage, and the state in which the string-like body 22 is wound around the outer peripheral surface of the tube material 21 is completed. Is preferred. The product purchaser can easily complete the assembly-type play equipment 1 in a desired form according to the installation location by combining the required number of pillar parts 20 and the shelf board 3 or the like. Hereinafter, a connection structure between the column part 20 and the shelf board 3 will be described.

  As shown in FIG. 6, in a portion where the shelf board 3 is sandwiched between the upper and lower column parts 20, 20, the shelf board 3 is previously set in accordance with the position of the bolt insertion hole 84 of the upper and lower joint members 7. The connection hole 31 is also formed through the same. The connecting hole 31 is formed so that its inner diameter matches the outer diameter of the annular protrusion 85 formed at the opening peripheral edge of the bolt insertion hole 84 on the joint member 7 side. The bolt member 26 is inserted in a state in which they are fitted to each other, and is fastened to the nut member 27 in a state where the upper and lower joint members 7 and the shelf plate 3 are overlapped.

  In the illustrated embodiment, a hexagon socket head bolt having a cylindrical head is used for the bolt member 26, and a hexagon nut is used for the nut member 27. The hexagon socket head cap screw is fastened with a hexagon wrench or the like. The hexagon nut is fitted into a rotation-preventing recess 86 formed in the flange-shaped portion 82 of the joint member 7 on one side (the lower side in the illustrated embodiment), and the joint rotation when the bolt member 26 is fastened is restricted. After completion of the fastening, the head of the bolt member 26 is also immersed in the rotation stopper recess 86 of the upper hook-like portion 82. Thus, by immersing the bolt member 26 and the nut member 27 from the front side surface of the bowl-shaped portion 82, it is possible to prevent the cat from becoming an obstacle when moving up and down, and the appearance is also improved. As the bolt member 26, for example, a bolt having a cross hole in a round plate-shaped or pan-shaped head can be used as a matter of course.

  The connecting operation between the column part 20 and the shelf board 3 according to the configuration of the present invention is only required to insert the four bolt members 26 at one place and fasten them with the nut members 27. Position alignment of the column part 20 and the shelf board 3 can also be easily performed by fitting the annular projection 85 projecting from the base end face 83 of the joint member 7 and the connection hole 31 formed in the shelf board 3. The bolt members 26 that connect the joint members 7 to each other are disposed on the hook-like portion 82 that projects outward from the tube material 21 and the number of the bolt members 26 is plural. Compared with the conventional structure which was connected, a much stronger connection state is obtained, and wobble and loosening are less likely to occur.

  FIG. 8 shows an embodiment of the upper end portion of the column 2. With respect to the shelf plate 3 attached to the upper end portion of the support column 2 and the base plate 6 provided at the lower end portion of the support column 2, the column part 20 is connected to only one of the upper and lower sides. There are similar parts on the top plate 41 and the bottom plate 42 of the house portion 4. The connection hole 31 is also formed through the shelf plate 3 and the like in such a portion in advance in accordance with the position of the bolt insertion hole 84 of the joint member 7. However, on the surface opposite to the surface to which the joint member 7 is connected, a countersink hole 33 is formed in the opening peripheral edge portion of the connection hole 31, and the nut member 27 projects from the surface of the shelf board 3 therein. It is paid not to. The bolt member 26 is shorter than that shown in FIG. 6 and is fastened to the nut member 27.

  FIG. 8 also shows the mounting structure of the height adjustment adjuster 5 at the upper end of the column 2. The adjuster 5 includes a ceiling pressing member 51 having a substantially disk shape, an adjustment bolt 52 that supports the ceiling pressing member 51 on the upper end portion of the column 2, and a wing nut 53 screwed into the adjustment bolt 52.

  An anti-slip rubber packing 54 is affixed to the upper surface of the ceiling pressing member 51, and a support pin 55 projects downward at the center of the ceiling pressing member 51. A high nut 56 is fixed to the upper portion of the adjustment bolt 52, and the high nut 56 is rotatably inserted into the support pin 55. On the side portion of the high nut 56, a finger blade blade 57 is projected. The lower portion of the adjustment bolt 52 passes through a through hole 35 formed in the uppermost shelf 3 and is inserted into a connector insertion hole formed in the shaft cylinder portion 74 of the joint member 7. Then, by rotating the adjustment bolt 52 and the wing nut 53 screwed to the adjustment bolt 52, the protruding length of the adjustment bolt 52 is adjusted and the column 2 is stretched. As described above, the joint member 7 of the present invention can also effectively use the connector insertion hole provided in the shaft center.

  As described above, by using the joint member 7 of the pipe member 21 according to the present invention, the assembly-type play equipment 1 can be easily assembled in various forms, and each connection portion is also firmly connected.

  In addition, regarding the detailed shape of the joint member 7, it is not limited to illustrated embodiment, It can change suitably in the range which does not deviate from the summary of this invention. In particular, a plurality of locations around the shaft, provided portions (connection ribs 75 and 76, depressions 77 for driving screws 78, ribs 81 formed on the inner peripheral surface of the outer cylindrical portion 72 or the outer peripheral surface of the inner cylindrical portion 71. The number and center angle of bolt insertion holes 84 etc. penetrating the bowl-shaped portion 82 can be arbitrarily set within a range not impairing practicality. The bolt insertion holes 84 used for connecting the joint member 7 and the shelf board 3 are most practically arranged at four positions with a central angle of 90 degrees so that the mounting direction of the shelf board 3 can be selected in any of front, rear, left and right. However, the mounting direction of the shelf board 3 can be expanded by further increasing the number thereof.

It is a perspective view which shows an example of the whole structure of the assembly-type play equipment for cats concerning embodiment of this invention. It is a perspective view which shows the other example of the whole structure of the assembly-type play equipment for cats concerning embodiment of this invention. It is a figure which shows the basic structure of the pillar parts in the said assembly-type playground equipment, Comprising: It is a perspective view of the joint member and pipe material which concern on embodiment of this invention especially. It is the front view which looked at the joint member shown in Drawing 3 from the fitting direction of a pipe material. It is a rear view of the joint member shown in FIG. FIG. 5 is an explanatory view showing a fitting structure between the joint member and the pipe material along an AA section of the joint member shown in FIG. 4 and also showing a side appearance in a connected state with the shelf board. It is BB sectional drawing of the joint member shown in FIG. It is explanatory drawing of the side direction which showed the connection state with the shelf board in the upper end part of a support | pillar, and the attachment state of the height adjustment adjuster. It is sectional drawing which shows the connection structure of a pipe material and a joint member based on the prior art of patent document 1. FIG. It is a perspective view which shows the connection structure of a pipe material and a joint member based on the prior art of patent document 2. FIG.

Explanation of symbols

1 Assembled play equipment 20 Pillar parts 21 Tube
22 String-like body 23 Brushed cloth 26 Bolt member 27 Nut member 3 Shelf plate 7 Joint member 71 Inner cylinder part 72 Outer cylinder part 73 Base part 77 Guide groove part 79 Thick part 82 Gutter part 83 Base end face 84 Bolt insertion hole 81 Rib

Claims (9)

A joint member that is fitted into an end portion of a paper tube or other pipe material having a circular cross section,
A substantially cylindrical inner tube portion having an outer diameter substantially matching the inner diameter of the tube material, and an outer portion formed concentrically on the outside of the inner tube portion with an interval substantially matching the wall thickness of the tube material. A cylindrical portion, a base portion connecting the base end sides of the inner cylindrical portion and the outer cylindrical portion, and a hook-shaped portion projecting outward from the base portion to the outer cylindrical portion. These inner cylindrical portion and outer cylindrical portion The base part and the bowl-shaped part are integrally formed of a synthetic resin material,
The base member and the hook-shaped portion share a base end surface orthogonal to the shaft center, and the hook-shaped portion is formed with a plurality of bolt insertion holes penetrating the hook-shaped portion in the axial direction. Joint member. In the joint member of a pipe according to claim 1,
The distal end portion of the inner cylinder portion extends in the axial direction more than the distal end portion of the outer cylinder portion, and a narrowing taper that is reduced in diameter toward the distal end is formed at the distal end portion of the inner cylinder portion. Joint member. In the joint member of a pipe according to claim 1 or 2,
A pipe joint member, wherein a plurality of ribs extending in the axial direction project from an inner peripheral surface of an outer cylindrical portion or an outer peripheral surface of an inner cylindrical portion. In the joint member of the pipe material according to any one of claims 1 to 3,
The outer cylinder portion is formed with a guide groove portion for a screw or a nail member that is driven through the outer cylinder portion in the radial direction, and the inner cylinder portion corresponds to a driving position of the screw or the nail member. A pipe joint member characterized in that a thick portion is formed. In the joint member of the pipe material according to any one of claims 1 to 4,
A joint member, wherein an opening peripheral portion of a bolt insertion hole that opens to a base end surface of a bowl-shaped portion protrudes from the base end surface. In the joint member of a pipe according to any one of claims 1 to 5,
A pipe joint member, wherein an opening peripheral edge portion of a bolt insertion hole that opens on a front side surface of a bowl-like portion has a shape that is recessed from the front side surface to restrain idling of a nut member. In the joint member of a pipe according to any one of claims 1 to 6,
A pipe joint member, wherein a connecting tool insertion hole penetrating the shaft center is formed in the inner cylinder portion or an insert nut is embedded.   A pipe joint member according to any one of claims 1 to 7 is fitted into both ends of a paper tube or other pipe material to form a column part, and the plurality of column parts are based on each other's joint member. An assembling-type play equipment for cats that is axially connected through a plurality of bolt members that are inserted through the bowl-shaped portion of the joint member with a shelf sandwiched between the end faces. In the assembly-type play equipment for cats of Claim 8,
An assembling-type play equipment for cats, characterized in that hemp string, cotton string and other string-like bodies are wound around the outer peripheral surface of the tube material except for the end fitted into the joint member.

Images