Patent Application
20070145688
The present invention relates to a connector for securing elongate framing elements together, and more particularly, the present invention relates to a sports goal frame assembly having wobble-free joints formed between elongate, hollow framing members.
A conventional goal, such as a soccer goal, includes an elongate crossbar extending horizontally between a pair of elongate, upright goal posts that together define a goal mouth. Goals typically include other framework members, such as, base bars that extend rearwardly from the base of the goal posts, a base cross bar that extends between the base bars, and/or backstays and the like that are used to suspend the net recessed from the goal mouth.
Various types of connectors are used to secure the ends of elongate framing members together. For example, U.S. Pat. No. 5,842,939 discloses a sports goal framework including a plurality of hollow tubular framing members joined together end-to-end by a plurality of mating connectors. Other examples of joints and connections, in general, are provided by U.S. Pat. Nos. 3,532,369 and 3,666,298 issued to Reilly; U.S. Pat. No. 4,273,462 issued to Fukuchi; U.S. Pat. No. 4,344,719 issued to Thom; U.S. Pat. No. 4,334,797 issued to Wahlin; U.S. Pat. No. 4,570,408 issued Frascaroli et al.; U.S. Pat. No. 4,630,550 issued to Weitzman; U.S. Pat. No. 4,691,818 issued to Weber; U.S. Pat. No. 4,998,702 issued to Reuter et al.; U.S. Pat. No. 5,061,000 issued to Haugen et al.; U.S. Pat. No. 5,079,860 issued to Nugent; U.S. Pat. No. 5,203,135 issued to Bastian; U.S. Pat. No. 5,363,625 issued to Philippi; U.S. Pat. No. 5,605,410 issued to Pantev; U.S. Pat. No. 6,324,988 B1 issued to Svensson; and U.S. Pat. No. 6,446,313 B2 issued to Pfister and U.S. Patent Application Publication No. 2005/0008431 A1.
While the connectors and framing member assemblies disclosed in the above referenced patents and published application may function in an acceptable manner, there is a need for a connector enabling the ready formation of wobble-free joints between elongate framing members, such as between the framing members of a sports goal. The connector should prevent slippage between the members forming the joint and should enable a framework assembly, such as a sports goal frame, to be readily assembled in a minimum of time with a minimum of labor and skill.
According to one aspect of the present invention, an assembly is provided that includes a connector and at least one framing member having a hollow open end and a longitudinally-extending recessed channel. The channel is formed by at least a pair of opposed inwardly-directed walls having inner peripheral surfaces that taper toward one another in a substantially V-shaped configuration. The connector is in the form of a sleeve slidably receivable within the hollow end of the framing member and has a longitudinally-extending inset track for cooperatively receiving and engaging the tapered inner peripheral surfaces of the channel walls of the framing member. The inset track has outer peripheral surfaces formed by outwardly tapered walls, whereby when the inset track and recessed channel are urged together by a fastener, a slip-resistant joint is formed therebetween.
According to another aspect of the present invention, a sports goal assembly is provided. The assembly includes a plurality of elongate, hollow goal frame members, such as a pair of goal posts, a crossbar, base bars, and a base crossbar. Each of the frame members has a longitudinally-extending recessed channel along a length thereof for use in securing a perimeter rope of a goal net therein, and each of the recessed channels is defined by at least a pair of opposed inwardly-directed walls having inner peripheral surfaces that taper toward one another. A plurality of sleeve-shaped hollow connectors are used to form joints between the goal frame members such that a portion of one connector is telescopically-received within each confronting end of each adjacent pair of goal frame members. Each connector has a longitudinally-extending inset track for cooperatively receiving and engaging the tapered inner peripheral surfaces of the channel walls of the goal frame members. The inset tracks have outer peripheral surfaces formed by outwardly tapered walls providing a V-shaped configuration that enable a slip-resistant joint to be formed.
According to a further aspect of the present application, a method of assembling a sports goal is provided. The above referenced goal frame members having longitudinally-extending recessed channels and sleeve-shaped connectors having longitudinally-extending, substantially V-shaped inset tracks are provided for assembly, and a length of one the connectors is inserted into a hollow end of one of the elongate goal frame members. A fastener is applied to the goal frame member such that the fastener extends through the recessed channel of the goal frame member and the inset track of the connector to urge the inwardly tapered inner peripheral surfaces of the walls of the recessed channel of the goal frame member into slip-resistant engagement with the outwardly tapered outer peripheral surface of the inset track of the connector.
The features and advantages of the present invention should become apparent from the following description when taken in conjunction with the accompanying drawings, in which:
The present invention relates to connectors used to connect elongate framework members together to form a framework structure. As an example, the connector of the present invention can be used in the assembly of sport goal frames, such as soccer goals. Of course, the present invention can also be utilized for the construction of other goals as well as other non-sports related structures.
Various configurations of soccer goal frames are known in the art. The goal 10 illustrated in
A net (not shown) is typically secured to the soccer goal frame 10 such that the net is recessed behind the goal mouth 18. Accordingly, the soccer goal frame 10 includes a pair of base bars, 20 and 22, that extend rearwardly from the lower ends of the goal posts, 14 and 16. The frame 10 can also include a base crossbar 24 that extends between and interconnects the rearward ends of the base bars, 20 and 22. Backstays 26 and the like extend rearwardly from the upper ends of the goal posts, 14 and 16, to support the a spaced distance behind the crossbar 12. In the illustrated embodiment, the backstays 26 are substantially U-shaped and interconnect only with the goal posts. Other backstay configurations can be utilized such as those that extend from the upper end of the goal posts, 14 and 16, and interconnect to the rearward ends of the base bars, 20 and 22. Ground anchors 28 are connected to the base bars, 20 and 22, to secure the goal 10 to the underlying ground surface to prevent the goal from tipping over or from other undesired movement.
Joints are formed between each adjacent pair of confronting ends of the crossbar 12, goal posts 14 and 16, base bars 20 and 22, and base cross bar 24. In the illustrated embodiment, the goal post 14 includes an elongate post section 14a, an integral short-length lateral extension 14b welded to the upper end of the post section 14a, and an integral short-length rearward extension 14c welded to the lower end of the post section 14a. The goal post 16 is similar in construction to goal post 14 and includes integral short-length right angle extensions 16b and 16c. The base bars, 20 and 22, also include integral short-length right angle extensions 20a and 22a. Accordingly, an end-user assemblies the goal frame 10 by forming a total of six joints including: a joint 30 between the cross bar 12 and extension 14b of goal post 14; a joint 32 between the cross bar 12 and extension 16b of goal post 16; a joint 34 between the base bar 20 and extension 14c of goal post 14; a joint 36 between the base bar 22 and extension 16c of goal post 16; a joint 38 between the base crossbar 24 and extension 20a of base bar 20; and a joint 40 between the base crossbar 24 and extension 22a of base bar 22.
The above referenced goal frame and joint configuration provides only one example of a goal assembly. An alternate configuration is to provide each of the goal posts, base bars, crossbar, and base cross bar as a straight section without integral right angle extensions. In this case, separate elbow shaped framing pieces (not shown) would be provided to form each right angle connection. Each end of the elbow framing element would receive a separate connector and would connect to an elongate framing member. Thus, each elbow framing element would require the formation of two joints with two separate elongate framing elements and would thereby require the formation of a total of twelve joints for a goal assembly including goal posts, base bars, a crossbar and a base crossbar as discussed above.
Each of the above referenced framing members, 12, 14, 16, 20, 22 and 24, is substantially hollow end-to-end, or at least has hollow opposite ends. The cross-section of the outer peripheral surface 42 of the framing members, 12, 14, 16, 20, 22 and 24, can be substantially circular (see
According to the present invention, a connector 46 is utilized to form the joint between the confronting ends of adjacent framing members. For example, as shown in
An inset track 52 extends the length of each connector 46 and corresponds in shape to the inset channels 44 of the framing members. As best illustrated in
The recessed channels 44 of the framing members include walls 64 and 66 having at least sections thereof that have inner peripheral surfaces 68 that are inwardly tapered, for instance, in a “V”-shaped configuration. In some embodiments of the present invention, the inwardly tapered inner peripheral surfaces 68 can be discontinuous and include first and second spaced apart surfaces, 70 and 72, for instance as illustrated in
Accordingly, when a portion of the connector 46 is telescopically received within a framing element, the recessed channel 44 of the framing member is received within the inset track 52 of the connector 46. One or more fasteners can be extended through the channel 44 and track 52 thereby urging the inner peripheral surfaces 68 of the channel 44 against the outer peripheral surfaces 58 of the track 52. This creates a tight joint and prevents any slippage or wobbling between the connector 46 and framing element even with framing elements and connectors manufactured within allowed ranges of tolerances. The V-shapes of the confronting surfaces compensate for any tolerances in size and permit the walls, 54, 56, 66 and 68, of the track 52 and channel 44 to be tightly brought together.
As best shown in
As best shown in
Preferably, all of the above referenced framing members and connectors are made of metal or a hard plastic. For example, the connectors 42 can be extrusions of aluminum. Of course, various other materials and processes for making the framing members and connectors can be utilized.
According to a method of the present application, framing members and connectors 46 are provided to a site in an unassembled condition. For example, the unassembled framing members can include separate goal posts 14 and 16, crossbar 12, base bars 20 and 22, and base cross bar 24. Preferably, the connectors 46 are pre-installed within one end of selected framing members. For example, connectors 46 can be pre-installed on both ends, 14b, 14c, 16b and 16c, of the goal posts, 14 and 16, and the rear end of each base bar, 20 and 22.
The exposed end of the connectors 46 are telescopically slid within the open end of the confronting framing member. For example, the connectors 46 extending from the upper ends of the goal posts 14 and 16 are slid into the opposite ends of the cross bar 12, the connectors 46 extending from the lower ends of the goal posts 14 and 16 are slid into the front ends of the base bars 20 and 22, and the connectors 46 extending from the rear ends of the base bars 20 and 22 are slid into the opposite ends of the base crossbar 24. Spacers 82 are positioned within the channel 44 and one or more fasteners 86 are applied through the recessed channels 44 of the framing members and into the inset tracks 52 of the connectors 46. The fasteners 86 are tightened to bring the inwardly tapered inner peripheral surfaces 68 of the recessed channel 44 into tight engagement with the outwardly tapered surfaces 58 of the inset tracks 52. This provides a desired slip-resistant and wobble-resistant joint.
After all joints are tightened, the goal frame 10 can be secured to an underlying ground, or playing, surface with ground anchors 28 and a perimeter rope (not shown) of a goal net can be secured within the longitudinally-extending recessed channels 44 extending throughout the framing elements. This is typically accomplished by applying a plurality of clips or fasteners (not shown) at spaced intervals along the recessed channels 44 to secure the perimeter rope to the goal frame 10.
The goal frame 10 can be unassembled by removing the fasteners 86 and sliding one end of the connectors 46 out of the framing elements. Thus, the goal frame 10 can be stored in a knockdown condition until re-assembled before the start of the next season.
While preferred connectors, framing member assemblies, goal frame assemblies, and methods have been described in detail, various modifications, alterations, and changes may be made without departing from the spirit and scope of the connectors, assemblies, and methods according to the present invention as defined in the appended claims.
