JPH0410857Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a separate type table tennis table that is foldable and height adjustable.

(Conventional technology) Currently, the height of the table tennis table (from the floor to the top surface)
is 762± for official games according to Japanese Industrial Standards (JIS).
The standard is 3mm (760mm for the Japan Table Tennis Association), but the Japan Table Tennis Association is proposing to newly specify 660mm for junior highs.

Up to now, as a separate type table tennis table, the front and rear sides of the top plate and underframe are connected by X-shaped leg rods, and a pivot shaft is attached at the butting ends of the top plates of these X legs. is fixed in position, the pivot shaft at the outer end is slidable in the left and right direction relative to the top plate and underframe, and the center portions of the upper and lower pivot shafts at the butting ends are connected by a turnbuckle mechanism. However, the height of the top plate is adjusted by operating this turnbuckle mechanism (Utility Model Application No. 107276/1983), and the top plate is supported at the upper ends of the inner main leg and the outer secondary leg. It is known that the height of the top plate can be changed by pivoting the short rods so that they can rotate and tilting the short rods outward with respect to the lower leg rods.

(Problem to be solved by the invention) By the way, in the above method, in order to adjust the height of the top plate, it is necessary to individually operate multiple turnbuckle mechanisms or pivot shafts of short rods with the top plate unfolded. In addition, the left and right top plates cannot be aligned horizontally without repeating the operation several times, making it difficult to handle, and table tennis tables that use turnbuckles cannot be folded. On the other hand, even if the short rods are foldable,
It is extremely inconvenient that the top plate cannot be folded until it is returned to its standard height (with the short leg rods straight).

Therefore, this idea was developed as a separate type that allows the height of the top plate to be easily adjusted to the height for official matches and the height for junior highs.
To provide a table tennis table that can be easily folded in any state of top plate height.

(Means for Solving the Problem) This invention is based on the above-mentioned purpose, and is a separate type table tennis table, with the front and rear main legs supporting the top plate 1 in the center being placed at the upper and lower ends of the top plate 1, respectively. The upper main leg 3 has a horizontal collar 3a and an ear piece 3c facing the butt end side, and has a pair of upper and lower small holes 3b at the lower end, and upper and lower small holes 3b that overlap the small holes 3b of the upper main leg 3 at the upper end. The upper main leg 4 is divided into two parts with a hole 4b provided therein, and the upper end of each upper main leg 3 is rotatably supported on horizontal bars 2a at the front and back of the bottom surface of the top plate 1 at the side ribs 3a, while Each lower end portion is rotatably pivoted to a small hole 4b above the upper end of the lower main leg 4 through a small hole 3b above the lower end of the upper main leg 3,
The front and rear horizontal bars 2a of the bottom surface of the top plate 1 each have a horizontal flange 3 on the butting end side of the top plate 1 from the horizontal flange 3a.
An insertion hole 12 is provided at a radius position equal to the distance from the pivot point of a to the small hole 3d provided in the ear piece 3c. Either insert the stopper pin 6f into the small hole 4b to linearly fix the upper main leg 3 to the lower main leg 4, or insert the stopper pin 6f into the small hole 3d of the ear piece 3c and the insertion hole 12 of the horizontal bar 2a. It is characterized in that the upper main leg 3 can be rotated relative to the lower main leg 4 by being inserted therethrough, and can be fixed to the horizontal bar 2a on the lower surface of the top plate.

(Example) An example of this invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a top plate, and on its lower surface are provided frame-like horizontal bars 2a made of angle wood parallel to the front and back and side bars 2b parallel to the left and right, and the center of the front and rear horizontal bars 2a. The upper main legs 3 are rotatably attached to the upper main legs 3 through the side ribs 3a facing the abutting side of the top plate formed at the upper end of the upper main legs 3, respectively. As shown in A, the upper half forms a rectangular tube, but the lower half forms a groove with the opposite side of the top plate facing each other, that is, the outer side, open. A pair of upper and lower small holes 3b are formed in each, and a tab 3c is provided at the lower end of the inner surface in the same direction as the horizontal collar 3a.
This lug piece 3c has a small hole 3d whose radius is the distance between the centers of the upper and lower small holes 3b on the front and back surfaces, and which is on an arc centered on the upper part and located below the axis of the pin axis of the upper horizontal flange 3a. is drilled.

On the other hand, each lower main leg 4 is formed of a rectangular tube member in an inverted T shape, and casters 4a are provided at both ends of the lower horizontal rod.
are attached to the upper main legs 3, and small holes 4b corresponding to the pair of small holes 3b of the upper main legs 3 are bored on the front and back surfaces of the upper end of each vertical rod, and the upper ends of the upper main legs 3
A stopper member 6 (described later) is inserted into the corresponding upper small holes 3b and 4b, respectively.
A supporting screw rod 7 is inserted through the support screw 7 as shown in FIG. 2B, and the lower main leg 4 and the upper main leg 3 are rotatably connected to each other.

When connecting the upper and lower main legs 3 and 4, a face plate 8 is provided on the surface of the upper main leg 3 with a pair of upper and lower small holes 8a, similar to the main leg 3.
are brought into contact with each other, and there is an interlocking rod 5 on the back side.
The inner ends of the two are in contact with each other, and they are each rotatably attached by the threaded rod 7.

As shown in FIG. 2A, the stopper member 6 includes a cylindrical body 6a having slits 6b of required length and width on both sides, and caps 6c tightly fitted on both ends of the cylindrical body 6a.
and a cover flange 6d, a coil spring 6e housed inside, a guide pin 6g that engages with the slit 6b in a cross shape, and a stopper pin 6f biased toward the main leg side by the coil spring 6e, and the outer end of the stopper pin 6f. This stopper member 6 normally has a stopper pin 6f attached to a small hole 8a below the face plate 8 and a small hole 8a below the upper and lower main legs 3 and 4 that overlap, as shown in FIG. It is arranged so as to penetrate through the holes 3b and 4b.

On the other hand, guide plates 9 each having a horizontal elongated hole 9a of a required length are attached to the front and rear horizontal bars 2a on the lower surface of the top plate 1 at a position outside (on the right side in FIG. 1) of the upper main leg 3. However, the horizontal long hole 9a is
(It may be provided directly on the horizontal crosspiece 2a without using the horizontal holes 9a from the back and front. The upper ends of the legs 10 are respectively arranged, and these ends are rotatably connected by a stopper 13 passing through the horizontal elongated hole 9a.

Support legs 11 are rotatably pivoted to intersect with each other at positions above the center of the front and rear sub-legs 10, and the lower end of each support leg is provided on the horizontal rod of the lower main leg 4. A first receiver 15 is rotatably supported on a bearing member 14, has an adjuster 11a at each upper end, and is provided at the outer end of the front and rear horizontal bars 2a.
a to hold the top plate 1 in the unfolded state.

In this way, the upper end of the support leg 11 is connected to the first receiver 15.
a, the top plate 1 is held horizontally at the height position for official matches, but the front and rear horizontal bars 2a have second receivers 15b inside than the first receivers 15a. When the upper end of the support leg 11 is engaged with the second receiver 15b, the top plate 1 is held at the height position for the uniform.

Inwardly of the main legs 3 and 4 of the front and rear horizontal bars 2a, there is a position on an arc whose center is the pivot pin axis of the upper main leg 3 and whose radius is the distance from there to the small hole of the ear piece 3c. An insertion hole 12 for a stopper pin 6f is provided at the bottom, and a reinforcing rod 16 is provided at the lower end of the front and rear lower main legs 4.
The upper ends of the support legs 11 are connected by another reinforcing rod 17.

Therefore, the top plate 1 is unfolded as shown in FIG. 1, and is used as a table for official matches by placing a pair of left and right sides against each other as shown in FIG. 3.

In this unfolded state, if you lift the outer end of the top plate 1, the top plate 1 will rotate upward using the pin shaft of the horizontal rib 3a of the upper main leg 3 as a fulcrum, and the upper end of the support leg 11 and the horizontal rib 2a is released from the first receiver 15a, and the interlocking rod 5, which is pivoted to the screw rod 7 on the back surface of the upper main leg 3, also rotates upward using the screw rod 7 as a fulcrum. , the stopper 13 connecting the outer end of the interlocking rod 5 and the upper end of the secondary leg 10 is guided by the horizontal elongated hole 9a of the guide plate 9 and moves from the outside to the inside as shown in FIG. leg 1
0 and the support leg 11 pivoted at the upper center thereof stand up and are drawn toward the main legs 3 and 4,
As a result of the subsequent rotational movement, the top plate 1 stands up as shown in FIG.

In that case, the lug 3c of the upper main leg 3 is
The small hole 3d overlaps the insertion hole 12.

If the upper end of the top plate 1 is pushed and rotated downward while the top plate 1 remains in the folded state shown in FIG.

Therefore, when lowering the height of the top plate 1, the fourth
When the top plate 1 is in the upright state in Figure B, pinch the knobs 7h of the front and rear stopper members 6 and insert the stopper pins 6f into the small holes 3b and 4 on the lower side of the main legs 3, 4 and the face plate 8.
b, 8a, and rotate the stopper member 6 together with the face plate 8 toward the horizontal bar 2a around the threaded rod 7, and when the small hole 8a on the lower side of the face plate 8 matches the insertion hole 12 of the horizontal bar 2a, When the knob 6h is released, the stopper pin 6f is inserted into the insertion hole 12 of the horizontal bar 2a and the small hole of the lug 3c of the upper main leg 3 through the small hole 8a on the lower side of the face plate 8 due to the restoring force of the coil spring 6c. 3d
When it is fitted, it will be in the state shown in Figure 5A.

Therefore, in this state, the upper main landing gear 3 is attached to the top plate 1.
The pivot point of the top plate 1 is a screw rod 7 for supporting a stopper.

Therefore, if the upper end of the top plate 1 is rotated downward by pushing or pulling it in the state shown in FIG. At the same time, it rotates as shown in the figure (b).

In addition, at this time, the interlocking rod 5 also rotates together with the top plate 1 using the threaded rod 7 supporting its inner end as a fulcrum, and no relative movement occurs between it and the horizontal bar 2a. Therefore, the stopper 13 connecting its outer end to the upper end of the secondary leg 10 rotates while remaining at the inner end of the horizontal elongated hole 9a.

As the top plate 1, upper main leg 3, and interlocking rod 5 rotate as described above, the secondary leg 10 and the support leg 11 open in an X shape, and the adjuster 11a at the upper end of the support leg 11 opens as shown in FIG. is the second receiver 15 provided on the horizontal beam 2a.
b, and the top plate 1 is unfolded to a height l' for the uniform, which is lower than the previous height l.

If the outer end of the top plate 1 is lifted and rotated in the state shown in FIG. 5C, it can be folded as shown in FIG. Pinch the knob 6h and pull out the stopper pin 6f from the lower small hole 8a of the face plate 8, the insertion hole 12 of the horizontal bar 2a, and the small hole 3d of the ear piece 3c, rotate the face plate 8 downward, and remove the stopper pin 6f.
By inserting it again into the lower holes 3b and 4b of the upper and lower main legs 3 and 4, the integral relationship between the upper main leg 3 and the horizontal beam 2a is broken, and the mounting axis of the horizontal rib 3a is used as a pivot point. It is possible to change the state of use of the top plate 1 to a higher level.

In addition, as for the stopper member 6, as shown in FIG. 6, the slit 6b is not provided in the cylindrical body 6, and a piece 6g' of the required width is attached to the stopper pin 6f instead of the guide pin, and this is inserted into the cylindrical body 6a. Alternatively, only the stopper pin 6f may be tied to a suitable position on the main leg with a chain or the like, and can be inserted into and removed from a small hole in the main leg, ear piece, or the like.

In addition, if the supporting legs 11 are bent in an inverted F-shape as shown in FIG. 7, and the upper ends thereof are brought into contact with the lower surface of the top plate in an upright state, the first and second receivers 15a may not necessarily be connected to each other. , 15b are not required.

(Effect of the invention) As described above, this invention is configured as a separate type table tennis table as described above, so when the top plate is folded, the stopper pin is connected to the small hole on the lower side of the lower end of the upper main leg and the lower part of the table tennis table. Either insert the stopper pin into the position where it overlaps with the small hole on the lower side of the upper end of the main leg, or insert it into the position where it overlaps with the small hole in the lug of the upper main leg and the insertion hole in the horizontal bar on the lower surface of the top plate. You can easily adjust the top plate to a high position for official games or a low position for team matches by simply changing the insertion location of the stop pin.In addition, you can easily insert the stopper pin at once without having to redo it many times like with conventional ones. The top plates forming a set can be reliably aligned in a horizontal state by operation, and the top plates can be smoothly folded into a compact size regardless of their height, making it extremely convenient to use.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of this invention. FIG. 2A is an exploded perspective view of the upper and lower main leg portions and the stopper member. Figure B is a cross-sectional view of the upper and lower main legs connected by a stopper member. FIG. 3 is a side view of a pair of unfolded table tennis tables in use. FIGS. 4A and 4B are side views of the folding process and the completed state. FIG. 5A is a side view of the stopper member rotated during folding. Figure B is a side view of the top plate in the middle of unfolding. Figure 5C is a side view of the top plate unfolded in a low position. 6th
The figure is a sectional view of a state in which the upper and lower main legs are connected using a modified stopper member. FIG. 7 is a side view of the unfolded state when using modified support legs. In the figure, 1...Top plate, 2a...Horizontal bar, 2b...Side bar, 3...Upper main landing gear, 3a...Horizontal rib, 3b, 3
d...small hole, 3c...ear piece, 4...lower main leg, 4
b...Small hole, 5...Interlocking rod, 6...Stopper member,
6a... Cylindrical body, 6e... Coil spring, 6f... Stopper pin, 7... Screw rod, 8... Face plate, 8a...
...Small hole, 9a...Horizontal long hole, 10...Secondary leg, 11
... Support leg, 12 ... Insertion hole, 13 ... Stopper,
15a, 15b...first and second receivers.

Claims (1)

[Scope of utility model registration request] The front and rear main legs that support the top plate 1 at the center are provided with horizontal ribs 3a and ears 3c facing toward the abutting ends of the top plate 1 at the upper and lower ends, respectively, and a pair of upper and lower small holes 3b are provided at the lower ends. The upper main leg 3 is divided into two, and the lower main leg 4 has upper and lower small holes 4b that overlap the small holes 3b of the upper main leg 3 at the upper end. Top plate 1 in the part
While being rotatably supported on horizontal bars 2a on the front and rear of the lower surface, each lower end is connected to a small hole 4b above the upper end of the lower main leg 4 through a small hole 3b above the lower end of the upper main leg 3. The horizontal ribs 2a on the front and back of the lower surface of the top plate 1 are provided with ear pieces 3c from the pivot point of the horizontal ribs 3a on the abutting end side of the top plate 1 from the horizontal ribs 3a, respectively. An insertion hole 12 is provided at a radius position equal to the distance to the small hole 3d, and a stopper pin 6f is inserted into the small hole 3b on the lower side of the lower end of the upper main leg 3 and the small hole 4b on the lower side of the upper end of the lower main leg 4. , fix the upper main landing gear 3 to the lower main landing gear 4 in a straight line, or
The stopper pin 6f is inserted into the small hole 3d of the ear piece 3c and the insertion hole 12 of the horizontal bar 2a to enable the upper main leg 3 to rotate relative to the lower main leg 4. A table tennis table characterized by being fixed.