JPH0431087Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a basketball stand, and in particular, a boom supporting a goal plate in a tiltable manner is supported in a tiltable manner via a support erected on a base. This article relates to a mobile basket stand.

Conventional technology The goal board, which is essential for basketball, must be held at a predetermined height from the playing surface, and there are two types of stands for maintaining the predetermined height: fixed and movable. be. The fixed type consists of a predetermined goal plate set upright on the playing surface, and there are two types: one type stands on the ground or floor, and the other types suspends it from the ceiling. However, the fixed type basketball stands make the playing surface or indoor space too small and prevent it from being used as another playing surface, so movable basketball stands are now being used more often.

However, this type of mobile basketball stand must be compact when moved or stored, and must be able to be stably fixed when used in competitions, as well as being able to be used in both formal competitions and mini-competitions. is economical.

Problems that the invention aims to solve However, among the mobile basketball stands that have been provided in the past, there are relatively few structures that can be used in common for both official competitions and mini-competitions without any problems, and in both cases, the goal is Since each height is different, there is currently no one that can be automatically set to that height and does not require troublesome adjustments. In other words, when it is necessary to change the backboard from the stored state to the used state and set the backboard for either official or mini-competition use, the backboard must be adjusted up and down while actually measuring the vertical height from the goal to the competition surface. The operation was troublesome and complicated.

Means for Solving the Problems In view of the above problems, the present invention is a mobile type that can simply, quickly and easily support a backboard at a predetermined height, regardless of whether it is used for formal or mini competitions. The purpose is to provide a basket stand.
To achieve this purpose, the present invention includes a movable base, a column erected on the base, a boom pivotally supported at the upper end of the column, and a boom pivotably supported at one end of the boom in a tilt-adjustable manner. In the basket stand having a goal plate, the support has a screw shaft protruding from the base that can be rotated by engaging with an electric drive mechanism fixed to the base, and a collar screwed onto the screw shaft is fixed. A plate is engaged with a screw shaft so that it can be raised and lowered, and the lower ends of a plurality of rods are connected to the plate with the screw shaft at the center, and each rod extending parallel to the screw shaft is attached to a base. a plurality of guide tubes provided on a guide tube fixed to the guide tube are respectively penetrated therethrough, and a pedestal having a shaft support of the boom is mounted on the upper end thereof, and
A movable basket stand is constructed in which a pair of switches for opening an electric circuit of the electric drive mechanism when a part of the plate abuts is arranged on the guide tube at different heights.

Function According to the present invention having the above configuration, when the electric drive mechanism is driven, the screw shaft rotates and the plate having the collar that is threadedly engaged with the screw shaft moves in the axial direction, so that the rod is moved away from the guide tube. Expand and contract.
Moreover, the switch can be operated by raising and lowering the plate, and the closed power supply circuit can be opened by pressing the button, and the rod can be stopped from raising and lowering to maintain the height of the column at the selected predetermined height. The backboard allows it to be automatically set to the appropriate height for either formal or mini competitions.

Embodiments Examples of the present invention will be described below based on the drawings.

FIG. 1 is a side view, FIG. 2 is a front view, and FIGS. 3 to 7 are detailed explanatory views of each part.

In FIGS. 1 and 2, 1 is a base, 2 is a column erected on the base 1, 3 is a boom that is pivotally supported on the upper end of the column 2 and can be tilted vertically in front of the base 1; Reference numeral 4 designates a goal plate supported at one end of the boom 3 via a tilt adjuster 5, and reference numeral 6 designates a support that connects the other end of the boom 3 and the base 1 via universal joints 6a and 6b. Goal board 4 is the goal 4 from which the net is suspended.
a is supported and fixed perpendicularly to the backboard 4b,
Further, the backboard 4b is rotatably supported at the end of the boom 3 via a shaft 4c. On the other hand, the tilt adjustment device 5 positions the goal board 4 on a vertical line with respect to the floor surface during competition use as shown by the solid line, and
When the boom 3 is stored as shown in the phantom line, the boom 3 is tilted backward and folded, and the stay 5a that supports the back board 4b and the slide fixed on the boom 3 by slidably fitting one end of the stay 5a. It consists of a rail 5b and a hook means 5c for fixing one end of the stay 5a, and the hook means 5c is manually operated to engage and disengage. The boom 3 can be deformed into the state shown by the solid line and the state shown by the phantom line by expanding and contracting a portion of the support 2.

The column 2 consists of a fixed part 2a and a movable part 2b,
The movable part 2b is composed of three rods fitted into the guide part 2c of the fixed part 2a, and a plate 2d is integrally connected to the lower end of these three rods, as shown in FIG. 3A. has been done. The plate 2d is constituted by a substantially triangular plate body, with a collar 2e protruding from the substantially central portion thereof, and a female threaded portion engraved on the inner circumferential surface of the collar 2e. A screw shaft 2f is screwed into the collar 2e, and the screw shaft 2f protrudes downward from the fixed part 2a and has a bevel gear 2 at its end.
It has g. When this bevel gear 2g is rotated appropriately, the screw shaft 2f rotates, and the plate 2d is rotated through the collar 2e screwed onto the screw shaft 2f.
moves in the axial direction of the screw shaft 2f, the rod 2b can extend and contract from the fixed portion 2a. In addition, as shown in FIG. 3B and FIG. 3C,
Switches A to E are provided inside the fixed part 2a of the support column 2. These switches A to E are closed by actuating pieces 2m, 2m protruding from a portion of the plate 2d to stop the electric drive source for raising and lowering the plate 2d. Switch A is used to set the official competition, and switch B is used to set the mini competition. Switch D, which is higher than these switches A and B, is a safety switch for stopping the upper limit. Switch C is a safety switch for stopping the descent, and switch E is a safety switch for stopping at the lower limit. Further, these switches A to E are all normally open type, and are connected to the sequence controller together with push button switches divided into official and mini switches. Therefore, when the official competition push button switch is pressed, the actuating piece 2m of the plate 2d closes the switch A and opens the circuit, thereby stopping the electric drive source. When the push button switch for
stops rising and sets a predetermined height of the goal board 4.

On the other hand, inside the base 1, as shown in FIG. 4, there is a bevel gear 2 that meshes with the bevel gear 2g.
h is rotatably fixed, and the shaft 2i of this bevel gear 2h is connected to a decelerator 2j via an appropriate gear, and the decelerator 2j is connected to a drive unit 2k such as a motor. Outriggers 7 are provided at each of the four corners of the base 1. As shown in FIGS. 4 and 5, this outrigger 7 has a handle 7b pivotally attached to a shaft 7a protruding from the upper surface of the base 1, and a female screw tube 7c integrally attached to the shaft 7a hanging inside the base 1. This female screw tube 7c is fixed rotatably.
A male threaded shaft 7d that is screwed into the shoe 7e is provided at the upper end of the shoe 7e, and a spline collar 7f and a spline shaft 7g that guide the male threaded shaft 7d in a non-rotatable manner in the vertical direction are provided at the bottom of the base 1. . Therefore, when the handle 7b is rotated, the female screw tube 7c rotates, and the male screw shaft 7d that engages with the female screw tube 7c moves in the axial direction.
touches and separates from the floor surface. Therefore, the amount of movement of the shoe 7e is small enough to lift the wheels 10 provided at the rear of the base 1 and the wheels 10a of the auxiliary cart 9, which will be described later, from the floor. Therefore, the margin for the depth of screwing between the female screw tube 7c and the male screw shaft 7d may be small.

Furthermore, an auxiliary cart 9 is provided on the lower surface of the base 1 so that it can be pulled out, and wheels 10 are provided so that the wheels 10 can rotate. As shown in FIG. 6, this auxiliary trolley 9 has a recess 1a formed in the front and back direction on the lower surface of the base 1, and rollers 1b, 1b are rotatably fixed to the upper surface of the recess. Slide members 9a, 9a, which are pressed by
is rotatably fixed to the base 1, and this pinion 11 is connected to the output pulley 13 of a motor 12 with a clutch brake, which is provided to enable input switching of the electric drive source, through a timing belt 14 to the pulley 1.
Rotationally driven by 5. In addition, 9c is stoppa, 1
0a is a wheel.

In addition, a locking tool 8 is provided at the rear end of the base 1 for locking onto a hook or the like planted on a floor surface on which a competition surface is set. As shown in FIGS. 6 and 7, this locking tool 8 has a screw shaft 8b attached to a handle 8a that can be freely driven from the outside of the side surface of the base 1.
A lever 8d having an engaging portion 8c at one end that is screwed onto the screw shaft 8b is suspended from the base 1 via a shaft support 8e, and a connecting plate 8f is pivotally supported at the other end of the lever 8d. , a fitting 8 is attached to the lower end of this connecting plate 8f.
It is constructed by connecting a ring body 8h such as a carabiner via g. Therefore, when the handle 8a is turned by hand, the screw shaft 8b rotates, and the engaging portion _8C that is threadedly engaged with the screw shaft 8b can be moved in the axial direction of the screw shaft 8b. Therefore, the lever 8d swings vertically about the shaft support 8e, and the ring body 8
Move h up and down. Therefore, after hooking the anchor 17 installed under the floor 16 to the ring body 8h,
By moving the base 1 upward, the base 1 can be held without requiring a counterweight. The above-mentioned locking devices 8 are provided as a pair on both sides of the rear of the base 1, but in some cases, they may be provided at the center of the rear of the base 1. In this case, the handle 8a is connected to the base 1 and the rear. It protrudes outward from the end and is rotatably provided.

Next, to explain the operation of the above embodiment, when using it as a basketball stand during a competition, the base 1 is moved to the goal part of a predetermined playing surface and is placed in the state shown by the solid line in FIGS. 1 and 2. Use with. At this time, the locking tool 8 is connected to the anchor 17, while
The auxiliary trolley 9 is pulled into the base 1, and the wheels 10, 10a of the base 1 and the auxiliary trolley 9 are lifted off the floor by the outriggers 7 that protrude downward from the base 1, and the outriggers 7 are connected to the basket base. The entire body is supported on the floor. When the competition is over and the basket table is to be stored, first, the motor 12 with clutch brake is driven to rotate the pinion 11 via the pulleys 13, 15 and 14, and the auxiliary cart 9 is rotated.
mechanically protrudes a predetermined length forward of the base 1. Next, the driving portion 2k of the support column 2 is driven to rotate the bevel gear 2h, and the screw shaft 2f is rotated to retract the rod 2b into the fixed portion 2a and lower the height of the support column 2. The height of the pillar 2 is the fixed part 2a
When the boom 3 approaches the height of , the boom 3 tilts forward and descends to a retractable state (see the phantom line diagram in FIG. 1). Finally, the outrigger 7 is pulled into the base 1 side, and the base 1 and the auxiliary trolley 9 each have wheels 1.
0,10a. Finally, when the locking tool 8 is removed from the anchor 17, the basket stand can be moved on the floor via the wheels 10, 10a, and can therefore be moved to a hangar and stored.

In addition, when actually using the above embodiment, it is necessary to perform the above-mentioned operations of movement and installation reliably and safely, and for this reason, operation buttons and switches are attached to each operating part, taking particular safety into consideration. It is possible to incorporate an automatic control device that connects these to a sequence controller and uses its output to rotate the motor and clutch brake in the forward and reverse directions, blink the indicator lamp, etc. This type of automatic control device can be constructed extremely easily in the current field of electronic control technology.

Effects of the invention According to the invention explained above, the pillar can be expanded and contracted by an electric drive mechanism, and if one of the two switches activated when the plate comes into contact with the extension length is selected, the goal board can be moved. The height of the boom that supports the basketball can be differentiated into two high and low heights, and the basketball stand can be automatically, easily and quickly set up for formal competitions or mini competitions. Further, since the support column is composed of three rods arranged around the screw axis, it has high torsional rigidity with respect to the boom, and has the advantage of being able to stably hold the boom.

[Brief explanation of the drawing]

Figure 1 is a side view, Figure 2 is a front view, Figure 3A,
B and C are longitudinal cross-sectional views of the main parts of the struts, side views of the main parts, and XX cross-sectional views in Fig. 3B, Fig. 4 is a schematic perspective view of the drive mechanism of the struts, and Fig. 5 is a longitudinal cross-sectional view of the outriggers. , FIG. 6 is a schematic perspective view of the auxiliary truck and its drive mechanism, and FIG. 7 is a side view of the locking tool. 1... Base, 2... Support, 2a... Fixed part, 2
b...Movable part, 2c...Guide part, 2d...Plate, 2e...Collar, 2f...Screw shaft,
2g...bevel gear, 2k...drive unit, 3...boom, 4...goal board.

Claims (1)

[Scope of utility model registration request] A movable base, a pillar erected on the base,
In a basket stand having a boom pivotally supported at an upper end of a column and a goal plate pivotably pivoted at one end of the boom, the column is engaged with an electric drive mechanism fixed to the base. A rotatable screw shaft is provided protruding from the base, a plate having a fixed collar screwed onto the screw shaft is engaged with the screw shaft so as to be movable up and down, and the lower ends of a plurality of rods are attached to the plate around the screw shaft. At the same time, each rod extending parallel to the screw axis is passed through a plurality of guide tubes provided on a guide tube fixed to the base, and the shaft support of the boom is attached to the upper end of the rod. A pair of switches are disposed at different heights on the guide tube for opening an electric circuit of the electric drive mechanism when a part of the plate comes into contact with the guide tube. A mobile basket stand characterized by: