JP2006167072A - Table tennis table and stay for table tennis table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a table tennis table with improved operability and safety. <P>SOLUTION: This table tennis table is characterized in having stays 40 reducing the speed when a top board 10 rotationally turns from a storage attitude to a use attitude, and springs 50 energizing the rotational turning when the top board 10 rotationally turns from the use attitude to the storage attitude and reducing the rotational turning speed when the top board 10 rotationally turns from the storage attitude to the use attitude in leg parts 20 rotationally supporting the top board 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a table tennis table and a table tennis table stay.

  Conventionally, as a ping-pong table, the left and right top plates are independent, and the so-called separate type used by contacting one end of both top plates and the left and right top plates are connected, There is a so-called folding type that can be folded and stored at the boundary between both top plates. In either type, the top plate can be erected substantially vertically, and the legs that support the top plate in a rotatable manner can be folded along the top plate. .

  As described above, the state of use (state where the top plate is horizontally supported by the legs) and the storage state (state where the top plate stands substantially vertically and the legs are folded along the top plate). In the table tennis table that can be deformed, due to the weight of the top plate, it requires a lot of manpower when deforming, it is dangerous that the top plate may rotate rapidly when deformed, Problems such as inability to handle were pointed out.

  In order to solve this problem, for example, in Japanese Patent Application Laid-Open No. 2003-190346, a gas damper that exerts a braking force is provided on a leg portion that rotatably supports the top plate so that the top plate is in a storage position (substantially vertical). An internal folding table tennis table is disclosed that is configured to decelerate the speed when rotating from a normal posture) to a use posture (substantially horizontal posture) by a braking force exerted by a gas damper.

  However, the table tennis table described in the publication has the following problems. In other words, the gas damper uses a gas pressure that is generated when the piston presses the gas filled in the cylinder to mitigate the impact, so that it exerts a large braking force immediately after the piston rod starts to move backward. Resulting in. Therefore, when the ping-pong table is deformed from the stored state to the used state, a large force is required to start the rotation of the top board, and the operability is poor. In particular, when the table tennis table is left in a stored state for a while and then transformed into a use state, such a problem appears remarkably. However, it is possible to suppress the occurrence of such a problem by setting the braking force exerted by the gas damper small. However, in this case, the shock absorbing ability is also lowered, so that sufficient buffer characteristics cannot be obtained.

  When the ping-pong table is deformed from the use state to the housed state, the gas damper exhibits a force that assists the rotation of the top board. However, the auxiliary force exerted by the gas damper is not only when the top plate starts to rotate, but also the rotation reaches the end point. This is dangerous because it causes an effect of strengthening the impact. However, it is possible to suppress the occurrence of such inconvenience by setting the assisting force exhibited by the gas damper small. However, in this case, the burden on the person who rotates the top plate increases, and the operability deteriorates.

  Gas dampers are also susceptible to temperature effects and have unstable characteristics. That is, the gas pressure increases at a high temperature and decreases at a low temperature, so that the braking force or auxiliary force exerted by the gas damper changes according to a change in temperature. Gas dampers also have poor characteristics when a gas leak occurs.However, because the piston rod is exposed, dust and the like are likely to adhere to the piston rod, and the dust and the like damage the piston rod and packing. There is also a disadvantage that it is likely to occur. In addition, the gas damper has a drawback in that a high degree of mounting accuracy is required because the characteristics do not match at all if the mounting position is slightly different.

  On the other hand, as a stay that exhibits braking force, for example, a stay disclosed in Japanese Patent Application Laid-Open No. 2004-225248 is known. The stays are provided at the first and second arms where the base ends of the stays are connected to each other and the connecting portions of the first and second arms so that the stays can swing relative to each other. And a damper that makes the rocking motion slow. However, this publication does not disclose the application of the stay to the ping-pong table.

JP 2003-190346 A JP 2004-225248 A

  This invention is made | formed in view of the said situation, and makes it a subject to provide the ping-pong table which the operativity and safety improved compared with the conventional ping-pong table. Another object of the present invention is to provide a stay suitable for a table tennis table.

In order to solve the above-described problems, the present invention provides the following table tennis table and table tennis table stay.
(1) A ping-pong table characterized in that a stay for reducing a speed when the top plate rotates from the stored posture to the use posture is provided on a leg portion that rotatably supports the top plate.
(2) The stays are provided at first and second arms where base ends of the stays are connected to each other and a connecting portion between the first and second arms so that the stays can swing with each other. The ping-pong table as set forth in (1) above, comprising a unidirectional damper that makes the second arm swing slowly.
(3) When the top plate rotates from the use posture to the storage posture, the rotation is applied to the leg portion, and when the top plate rotates from the storage posture to the use posture, The table tennis table as described in (1) or (2) above, wherein a spring for reducing the rotation speed is provided.
(4) One end of the spring is supported by one of the first and second arms constituting the stay, the other end is supported by the other arm, and one arm is separated from the other arm. The table tennis table according to (3), wherein the table tennis table is configured by a tension coil spring provided so as to generate elasticity by swinging in a direction to move.
(5) The ping-pong table as set forth in (4), wherein the spring is installed so that the amount of tension with respect to the spring is minimized during the rotation of the top plate.
(6) The first and second springs generate elasticity by swinging one of the first and second arms constituting the stay in a direction away from the other arm. The ping-pong table as set forth in (3) above, comprising a spiral spring provided at a connecting portion of two arms.
(7) Each of the unidirectional dampers is filled with a viscous material between opposed surfaces formed inside, and the resistance of the viscous material generated by the deviation between the opposed surfaces is Any one of (2) to (5) above, characterized in that it comprises a plurality of unidirectional rotating dampers arranged on the same axis to make the swing of the first and second arms slow. Table tennis table.
(8) When the first and second arms constituting the stay do not overlap in an angular range in which the stays can swing with each other and the two are in the closest state, a predetermined interval is formed between them. The table tennis table according to any one of (1) to (7), wherein the table tennis table is formed in a shape.
(9) The table tennis table according to any one of (1) to (8), wherein the first and second arms constituting the stay are pin-joined to the leg portion.
(10) The table tennis table according to any one of (1) to (9), wherein a weight is provided near one end of the top board.
(11) Either one of the first and second arms constituting the stay is attached to an inner leg part constituting the leg part, and the other arm is attached to a connecting member constituting the leg part. The ping-pong table according to any one of (1) to (9), wherein
(12) The first and second arms connected to each other and the connecting portions of the first and second arms are connected to each other so that they can swing with each other. A unidirectional damper that makes the swinging slow, and a spring that is provided so as to generate elasticity when one of the first and second arms swings away from the other arm. And a table tennis table stay.
(13) The spring is configured by a tension coil spring in which one end is supported by one of the first and second arms and the other end is supported by the other arm. 12) The table tennis stay.
(14) The ping-pong table stay according to (13), wherein the spring is installed so that the amount of tension with respect to the spring is minimized during the swinging of the one arm.
(15) The ping-pong table stay according to (12), wherein the spring is configured by a spiral spring provided at a connecting portion of the first and second arms.
(16) Each of the unidirectional dampers is filled with a viscous material between opposed surfaces formed inside, and the resistance of the viscous material generated by the deviation between the opposed surfaces is Any one of the above (12) to (14), characterized by comprising a plurality of unidirectional rotating dampers arranged on the same axis to make the swing of the first and second arms slow. The table tennis table stay described in 1.
(17) When the first and second arms do not overlap with each other in an angular range in which the first and second arms can swing, and are in a state where they are closest to each other, the first and second arms are formed in a shape that forms a predetermined interval therebetween. The ping-pong table stay according to any one of (12) to (16) above,
(18) The ping-pong table stay according to any one of (12) to (17), wherein the first and second arms are pin-joined to leg portions of the table tennis table.

According to the present invention described in (1) above, when the ping-pong table is deformed from the stored state to the used state, the top plate is decelerated by the braking force exerted by the stay, and the impact at the end point of the rotation is reduced. Can be relaxed.
According to the present invention described in the above (2), it is possible to apply a braking force to the top plate only when the top plate is rotated from the storage position to the use position. Accordingly, it is possible to reduce a burden on a person who rotates the top plate from the use posture to the storage posture. In addition, the stay can be configured simply and compactly.
According to the present invention described in (3) above, when the ping-pong table is deformed from the stored state to the used state, the rotation speed of the top plate is reduced by the braking force exerted by the stay and the spring, respectively. It becomes possible to reduce the impact at the end point. Further, when the ping-pong table is deformed from the use state to the housed state, it is possible to reduce the burden on the person who rotates the top board by the biasing force of the spring.
According to the present invention described in the above (4), the stay and the spring are integrated, so that the structure can be made compact and the mounting operation can be facilitated.
According to the present invention described in (5), when the top plate is rotated from the use posture to the storage posture, it is possible to prevent a large impact from being generated at the end point of the rotation.
According to the present invention described in the above (6), the stay and the spring are integrated, so that a compact configuration can be achieved and the mounting operation can be facilitated.
According to the present invention described in (7) above, when the table tennis table is deformed from the housed state to the used state, the force required to start turning the top plate can be reduced, and the operability is improved. It becomes possible to make it favorable. In addition, the stay mounting accuracy can be relaxed. In addition, the unidirectional damper can exhibit a large braking force while being small.
According to the present invention described in (8) above, it is possible to prevent an accident in which a finger or the like is pinched by the first and second arms.
According to the present invention described in (9) above, it is possible to facilitate the attachment work of the stay.
According to the present invention described in (10), it is possible to improve the operability when the top plate is rotated.
According to the present invention described in (11) above, since the stay itself functions as a balancer without providing a weight near one end of the top board, the top board is rotated as in the case where the weight is provided. It becomes possible to make the operability at the time of moving better.
According to the present invention described in (12) above, it is possible to apply two contradictory forces, a braking force and an urging force, to the top plate according to the rotational direction of the top plate. Further, by being integrated with the spring, it can be configured compactly, and the mounting operation can be facilitated.
According to the present invention described in (13), the spring is constituted by a tension coil spring in which one end is supported by one of the first and second arms and the other end is supported by the other arm. As a result, the same effect as that of the invention described in (12) can be obtained.
According to the present invention described in (14), when the top plate is rotated from the use posture to the storage posture, it is possible to prevent a large impact from occurring at the end point of the rotation.
According to the present invention described in (15) above, the spring is configured by a spiral spring provided at the connecting portion of the first and second arms, and thus the same effect as that of the invention described in (12) is obtained. Can play.
According to the present invention described in (16) above, it is possible to reduce the mounting accuracy. In addition, the unidirectional damper can exhibit a large braking force while being small. Further, when the ping-pong table is deformed from the housed state to the used state, it is possible to reduce the force required to start the rotation of the top board.
According to the present invention described in (17) above, it is possible to prevent an accident in which a finger or the like is pinched by the first and second arms.
According to the present invention described in (18), it is possible to facilitate the mounting operation.

  The present invention can be applied to both a separate table tennis table and an internal folding table tennis table.

  Here, as shown in FIG. 1, the separate table tennis table includes left and right top plates 10 and 10 that are separable, and leg portions 20 and 20 that are respectively provided on the top plates 10 and 10. Is done. The leg portion 20 serves to support the top plate 10 so as to be rotatable. The connecting member 21 is attached to the back surface of the top plate 10, the upper end portion is coupled to the connecting member 21, and the caster 25 is connected to the lower end portion. Are attached to the inner leg portion 22, the outer leg portion 23 having the upper end coupled to the connecting member 21, and the link member 24 spanned between the inner leg portion 22 and the outer leg portion 23. Configured. The top plate 10 is configured to rotate around the connecting portion between the connecting member 21 and the inner leg portion 22.

The leg portion 20 operates as follows in accordance with the rotation of the top plate 10.
When the top plate 10 is in the stowed posture, that is, when it is in a substantially vertical posture with one end 10a facing down and the other end 10b facing up, the top plate 10 is folded along the back surface of the top plate 10 (FIG. 1). (See (a)). When the other end 10b of the top plate 10 in the storage position is pulled down and the top plate 10 is rotated, the lower end portion of the outer leg portion 23 is rotated in a direction away from the back surface of the top plate 10 in accordance with the rotation (see FIG. 1 (b)). When the top plate 10 is in a use posture, that is, in a substantially horizontal posture, the inner leg portion 22 and the outer leg portion 23 are disposed so as to be substantially orthogonal to the top plate 10, and the link member 24 is disposed on the inner leg portion 22. It will be in the state arrange | positioned so as to be substantially orthogonal with respect to the outer leg part 23 (refer FIG.1 (c)).

  On the other hand, as shown in FIG. 2, the inner folding table tennis table is provided on the left and right top plates 10, 10, the connection member 30 that connects each top plate 10, 10, and each top plate 10, 10. The leg part 20 and 20 are comprised. The leg 20 includes a connecting member 21 attached to the back surface of the top plate 10, an inner leg 22 having an upper end coupled to the connecting member 21, and a caster 25 attached to the lower end, and an upper end on the connecting member 21. The outer leg portion 23 is coupled to the connecting member 30, the inner leg portion 22, and the outer leg portion 23. The top plate 10 is configured to rotate around the connecting portion between the connecting member 21 and the inner leg portion 22.

The leg portion 20 operates as follows in accordance with the rotation of the top plate 10.
When the top plate 10 is in the stowed posture, that is, when it is in a substantially vertical posture with one end 10a facing downward and the other end 10b facing upward, the top plate 10 is folded along the back surface of the top plate 10 (FIG. 2). (See (a)). When the other end 10b of the top plate 10 in the storage position is pulled down and the top plate 10 is rotated, the lower ends of the inner leg portion 22 and the outer leg portion 23 are separated from the back surface of the top plate 10 in accordance with the rotation. (See FIG. 2B). When the top plate 10 is in a use posture, that is, in a substantially horizontal posture, the inner leg portion 22 and the outer leg portion 23 are disposed so as to be substantially orthogonal to the top plate 10, and the link member 24 is disposed on the inner leg portion 22. It will be in the state arrange | positioned so as to be substantially orthogonal with respect to the outer leg part 23 (refer FIG.2 (c)).

  The present invention uses the stay 40 and the top board 10 for reducing the speed when the top board 10 is rotated from the storage position to the use position on the legs 20 of the separate table tennis table or the internal folding table tennis table. A spring 50 is provided that urges the rotation when rotating from the posture to the storage posture and decelerates the rotation speed when the top plate 10 rotates from the storage posture to the use posture. It is characterized by.

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

  FIG. 3 is a plan view showing the stay 40 employed in this embodiment. As shown in this figure, the stay 40 in the present embodiment includes a first arm 41, a second arm 42, a unidirectional damper 43, and a spring 50.

  The first and second arms 41 and 42 are connected to each other at their base ends 41a and 42a so that they can swing with each other. 4 is a side view showing a state in which the first and second arms 41 and 42 are close to each other, and FIG. 5A is a plan view showing a state in which the first and second arms 41 and 42 are separated from each other. FIG. 5B is a side view showing a state in which the first and second arms 41 and 42 are separated from each other.

  Specifically, as shown in FIG. 6, the first arm 41 has a hole 41c to which the shaft 46 is coupled to the base end 41a, and the shaft 46 is coupled to the hole 41c. Thus, the shaft 46 is attached so as to rotate as the first arm 41 swings. On the other hand, the second arm 42 has a hole portion 42c through which the shaft 46 is inserted into the base end portion 42a, and the shaft 46 is inserted into the hole portion 42c, so that the second arm 42 is freely rotatable with respect to the shaft 46. It is attached.

  As shown in FIGS. 4, 5 and 8, the first and second arms 41 and 42 are not overlapped in an angular range where they can swing with each other, and when both are in the closest state, It is preferably formed in a shape in which a predetermined interval is formed therebetween. By forming the first and second arms 41 and 42 in such a shape, the first and second arms 41 and 42 do not overlap in an angular range in which the first and second arms 41 and 42 can swing with each other, and both are closest to each other. Even in this state, since a predetermined interval is formed between the two, the table tennis table is stored from the use state with the hand touching the first arm 41, the second arm 42 or the unidirectional damper 43. Even when deformed to a state, it is possible to prevent an accident in which a finger or the like is caught between the first arm 41 and the second arm 42.

  The unidirectional damper 43 is provided at a connecting portion between the first and second arms 41 and 42. Here, as the unidirectional damper 43, the viscous material is filled between the opposing surfaces formed inside, and the resistance of the viscous material generated by the deviation between the opposing surfaces is utilized, It is preferable that the first and second arms 41 and 42 are composed of a plurality of unidirectional rotating dampers arranged on the same axis so that the swinging of the first and second arms 41 and 42 is slow.

  The unidirectional damper 43 employed in this embodiment is composed of two unidirectional rotating dampers 44 and 45 each attached to one shaft 46 as shown in FIG. Each unidirectional rotating damper 44, 45 has housings 44a, 45a, frames 44b, 45b, rotors 44c, 45c, disks 44d, 45d, viscous bodies (not shown), and unidirectional clutches 44e, 45e. Configured.

  The rotors 44c and 45c, the disks 44d and 45d, the viscous body and the one-way clutches 44e and 45e are accommodated in the housings 44a and 45a. The openings of the housings 44 a and 45 a are closed by frames 44 b and 45 b attached to the first arm 41.

  The viscous material is filled between the opposing surfaces of the rotors 44c and 45c and the disks 44d and 45d. As the viscous material, grease or the like can be used. In this embodiment, in order to increase the facing area between the rotors 44c and 45c and the disks 44d and 45d, both the rotors 44c and 45c and the disks 44d and 45d are provided with irregularities formed so as to mesh with each other.

  The one-way clutches 44e and 45e are interposed between the shaft 46 and the rotors 44c and 45c, and serve to rotate the rotors 44c and 45c only when the shaft 46 rotates in one direction. The unidirectional clutches 44e and 45e may have any structure as long as they can perform such a function.

  One end of the spring 50 is supported by the distal end portion 42 b of the second arm 42 and the other end is supported by the proximal end portion 41 a of the first arm 41, and the second arm 42 swings away from the first arm 41. It is comprised from the tension coil spring provided so that elasticity may be produced. The spring 50 is preferably installed so that the amount of tension with respect to the spring 50 is minimized during the rotation of the top plate 10. In this embodiment, the spring 50 is provided as a part of the stay 40. However, the stay 40 and the spring 50 may be provided on the leg 20 of the ping-pong table in an independent manner.

  As in this embodiment, the stay 40 and the spring 50 are integrated, so that the structure can be made compact, and the legs of the ping-pong table are compared with the case where the stay 40 and the spring 50 are independent. The attachment work to the part 20 can be made easy. Further, since the braking force exerted by the spring 50 is added to the braking force exerted by the unidirectional damper 43, it is possible to further reduce the rotational speed of the top plate 10 and further alleviate the impact at the end point of the rotation. On the other hand, among the braking forces applied to the top plate 10, it is possible to reduce the burden on the unidirectional damper 43 by generating a braking force excluding the braking force exerted by the spring 50. Become. Accordingly, since a small one can be used as the unidirectional damper 43, the entire stay 40 can be configured more compactly. In addition, by configuring the unidirectional damper 43 from a plurality of unidirectional rotating dampers 44 and 45, not only can the braking force be increased, but a single unidirectional rotating damper generates a viscous resistance. If the opposing area to be increased is increased, the overall size of the damper is considerably increased. However, by constituting the plurality of unidirectional rotating dampers 44 and 45, the overall size of the damper is not increased so much. There is an advantage that it is possible to increase the facing area that causes the resistance of the viscous body.

  As shown in FIG. 7, the stay 40 configured as described above has the tip 41 b of the first arm 41 connected to the outer leg 23 constituting the leg 20 of the table tennis table, and the second arm 42. The distal end portion 42b is connected to the connecting member 21 constituting the leg portion 20 of the table tennis table. Here, the first and second arms 41 and 42 are pin-joined to the outer leg portion 23 and the connecting member 21, respectively. Therefore, the stay 40 can be easily attached, and can be easily retrofitted to an existing table tennis table. Further, the first and second arms utilize the resistance of the viscous body generated by the unidirectional damper 43 (unidirectional rotating dampers 44 and 45) being displaced between the opposed surfaces formed inside. Since the swing of 41 and 42 is made slow, when the stay 40 is attached, the allowable range of the attachment position can be increased. That is, even if the mounting positions of the first and second arms 41 and 42 are slightly deviated, the characteristics of the unidirectional damper 43 are not affected, so that a high degree of mounting accuracy is not required and the mounting work is further facilitated. Can be.

  When the ping-pong table is deformed from the use state to the storage state, the other end 10b of the top plate 10 in the use posture is pushed up, and the top plate 10 is rotated. In this embodiment, as shown in FIG. 9, a weight 60 is attached in the vicinity of one end 10a of the top plate 10 to facilitate pushing up the other end 10b of the top plate 10. If the weight 60 is too heavy, it becomes a heavy burden when the top plate 10 is rotated from the storage position to the use position.

  When the top plate 10 is rotated from the use posture to the storage posture, the stay 40 operates as follows. That is, when the top plate 10 is in the use posture, the first and second arms 41 and 42 are in a state of being most separated from each other, and as the top plate 10 rotates, both swing in a direction close to each other. . At this time, the shaft 46 to which the first arm 41 is coupled rotates as the first arm 41 swings. However, the rotors 44c and 45c of the unidirectional rotating dampers 44 and 45 are unidirectional clutches 44e and 45e. Because of this, the shaft 46 does not rotate with the rotation of the shaft 46, so that the opposed surfaces of the rotors 44c and 45c and the disks 44d and 45d do not shift. Therefore, since the resistance of the viscous body is not generated, the unidirectional rotating dampers 44 and 45 do not exhibit the braking force. On the other hand, when the top plate 10 is in the use posture, the amount of tension with respect to the spring 50 is the maximum, and a large elastic energy is stored in the spring 50. This energy is released when the other end 10b of the top plate 10 is pushed up, and is applied to the top plate as a force that urges the top plate 10 to rotate. Accordingly, when the top plate 10 starts to rotate, the force required to push up the other end 10b of the top plate 10 can be reduced, and the burden on the person who rotates the top plate 10 can be reduced. And operability can be improved.

  Further, in the present embodiment, the spring 50 is installed so that the amount of tension with respect to the spring 50 is minimized during the rotation of the top plate 10. The urging force of the top plate 10 can be urged by the urging force. On the other hand, the spring 50 does not exert the urging force in the latter half of the rotation range of the top plate 10. It is possible to prevent the speed from being accelerated. Accordingly, it is possible to prevent a large impact from being generated at the end of rotation of the top plate 10 where the top plate 10 reaches the storage posture.

  When the ping-pong table is deformed from the storage state to the use state, the other end 10b of the top plate 10 in the storage posture is pulled down and the top plate 10 is rotated.

  When the top plate 10 is rotated from the storage position to the use position, the stay 40 operates as follows. That is, when the top plate 10 is in the stowed position, the first and second arms 41 and 42 are in the closest state, and a finger can enter between the first arm 41 and the second arm 42. The gap is formed.

  When the top plate 10 is rotated, the first and second arms 41 and 42 swing in directions away from each other. At this time, when the shaft 46 rotates with the swing of the first arm 41, the rotors 44c and 45c of the unidirectional rotating dampers 44 and 45 move with the rotation of the shaft 46 by the action of the unidirectional clutches 44e and 45e. Rotate. As a result, the opposing surfaces of the rotors 44c and 45c and the disks 44d and 45d are displaced from each other, and the resistance of the viscous material filled between the opposing surfaces is generated. Since the first arm 41 swings slowly due to the resistance of the viscous body, the rotational speed of the top plate 10 is also reduced.

  However, the unidirectional rotating dampers 44 and 45 exhibit a greater braking force as the rotational angle of the rotors 44c and 45c is larger and as the rotational speed of the rotors 44c and 45c is faster. Immediately after starting the rotation, the rotation angle of the rotors 44c and 45c is small, so that the braking force is small. Therefore, unless the top plate 10 is rapidly rotated, the force required to start the top plate 10 can be reduced, and the operability can be improved.

  Further, in the present embodiment, the spring 50 is installed so that the amount of tension with respect to the spring 50 is minimized during the rotation of the top plate 10. However, the force required to start the rotation of the top plate 10 can be reduced without exerting the urging force. On the other hand, in the latter half of the rotation range of the top plate 10, the braking force exerted by the spring 50 is applied to the top plate 10 in addition to the braking force exerted by the unidirectional rotating dampers 44 and 45. It can prevent more reliably that a big impact generate | occur | produces in the rotation end point of the top plate 10 in which the board 10 reaches a use attitude | position.

  In this embodiment, as shown in FIGS. 10 and 11, the first arm 41 constituting the stay 40 is attached to the inner leg portion 22 constituting the leg portion 20, and the second arm 42 constitutes the leg portion 20. It differs from the ping-pong table according to the first embodiment in that it is attached to the connecting member 21. Here, the stay 40 has the same configuration as the stay 40 employed in the first embodiment.

  According to the present embodiment, when the other end 10b of the top plate 10 in the use posture is pushed up in order to deform the table tennis table from the use state to the stored state, the one end 10a of the top plate 10 as in the first embodiment. Even if the weight 60 is not attached in the vicinity, the stay 40 itself acts as a balancer due to its own weight, so that the other end 10b of the top plate 10 can be easily pushed up as in the case where the weight 60 is provided. be able to. Therefore, the operability when rotating the top plate 10 can be improved.

  12A and 12B are views showing the stay 40 employed in this embodiment, where FIG. 12A is a plan view and FIG. 12B is a side view. As shown in this figure, the stay 40 in this embodiment also has a first arm 41, a second arm 42, a unidirectional damper 43, and a spring 50, like the stay 40 employed in the first embodiment. Although it is configured, it differs from the stay 40 in the first embodiment in the following points.

  That is, as shown in FIGS. 12A and 13A, the first arm 41 includes two arms 41A and 41B arranged in parallel, and the base end portion of one of the arms 41A. Is provided with a hole 41c to which the first shaft 47 is coupled, and the base end of the other arm 41B is inserted with a second shaft 42d formed integrally with the second arm 42. A portion 41d is provided (see FIG. 16). The first arm 41 has the first arm 47 coupled to the hole 41c of one arm 41A and the second shaft 42d inserted into the hole 41d of the other arm 41B. The first shaft 47 is attached so as to rotate in accordance with the swinging motion of 41 (see FIG. 16).

  The second arm 42 has, at its base end, a second shaft 42d protruding outward is inserted into a hole 41d formed in the other arm 41B constituting the first arm 41, and the first arm 42B The frame 43b of the unidirectional damper 43 coupled to the shaft 47 is fixed, so that the frame 43b is freely attached to the first shaft 47 (see FIG. 16).

  The unidirectional damper 43 is filled with a viscous material between opposed surfaces formed inside, and the first and second arms 41 are utilized by utilizing the resistance of the viscous material generated by the deviation between the opposed surfaces. , 42 is composed of a single rotary damper that makes the swinging motion slow.

  As shown in FIG. 16, the unidirectional damper 43 includes a housing 43a, a frame 43b, a rotor 43c, a disk 43d, a viscous body (not shown), and a unidirectional clutch 43e. The disk 43d, the viscous body, and the one-way clutch 43e are accommodated in the housing 43a. The opening of the housing 43 a is closed by a frame 43 b attached to the first arm 41.

  As shown in FIGS. 14 and 15, the spring 50 has one end supported by the second shaft 42 d and the other end spanned between the two arms 41 </ b> A and 41 </ b> B constituting the first arm 41. And a spiral spring provided to generate elasticity when the second arm 42 swings in a direction away from the first arm 41.

  As in the present embodiment, the stay 50 can be made compact by arranging the spring 50 at the connecting portion of the first arm 41 and the second arm 42. Further, when the spring 50 is exposed to the outside as in the first embodiment, a finger or the like may be pinched by the spring 50, but in this embodiment, the spring 50 includes the first arm 41 and the second arm 42. Since the connection portion is arranged so as not to be exposed to the outside, there is no possibility that a finger or the like is pinched by the spring 50. Moreover, the attachment work to the leg part 20 can be made easy compared with the case where the stay 40 and the spring 50 are independent. In addition, since the braking force exerted by the spring 50 is added to the braking force exerted by the unidirectional damper 43, the swing speed of the first and second arms 41 and 42 is further reduced, and the impact at the end point of the swing is reduced. On the other hand, among the braking forces applied to the first and second arms 41 and 42, a configuration that generates a braking force excluding the braking force exerted by the spring 50, that is, unidirectional It is also possible to reduce the burden on the damper 43. Accordingly, since a small one can be used as the unidirectional damper 43, the entire stay 40 can be configured more compactly.

  In the stay 40 configured as described above, as shown in FIG. 17, the distal end of the first arm 41 is connected to the inner leg 22 constituting the leg 20 of the ping-pong table, and the distal end of the second arm 42. The part is connected to a connecting member 21 constituting the leg part 20 of the table tennis table. Here, the first and second arms 41 and 42 are pin-bonded to the inner leg portion 22 and the connecting member 21, respectively. Therefore, the stay 40 can be easily attached, and can be easily retrofitted to an existing table tennis table. Further, the unidirectional damper 43 has a slow swing of the first and second arms 41 and 42 by utilizing the resistance of the viscous material generated by the deviation between the opposing surfaces formed inside. Therefore, when attaching the stay 40, the allowable range of the attachment position can be increased. That is, even if the mounting positions of the first and second arms 41 and 42 are slightly deviated, the characteristics of the unidirectional damper 43 are not affected, so that a high degree of mounting accuracy is not required and the mounting work is further facilitated. Can be.

  When the ping-pong table is deformed from the use state to the storage state, the other end 10b of the top plate 10 in the use posture is pushed up, and the top plate 10 is rotated. At this time, in this embodiment, as in the second embodiment, the first arm 41 constituting the stay 40 is attached to the inner leg portion 22 constituting the leg portion 20, and the second arm 42 constitutes the leg portion 20. Since it is attached to the connecting member 21, the stay 40 itself serves as a balancer. Therefore, the operability when rotating the top plate 10 can be improved.

  When the top plate 10 is rotated from the use posture to the storage posture, the stay 40 operates as follows. That is, when the top plate 10 is in the use posture, the first and second arms 41 and 42 are in a state of being most separated from each other, and as the top plate 10 rotates, both swing in a direction close to each other. . At this time, the first shaft 47 to which the first arm 41 is coupled rotates as the first arm 41 swings. The rotor 43c of the unidirectional damper 43 is operated by the unidirectional clutch 43e. Since the first shaft 47 does not rotate with the rotation of the first shaft 47, the opposed surfaces of the rotor 43c and the disk 43d do not shift. Therefore, since the resistance of the viscous body is not generated, the unidirectional damper 43 does not exhibit the braking force. On the other hand, when the top plate 10 is in the use posture, large elastic energy is stored in the spring 50. This energy is released when the other end 10b of the top plate 10 is pushed up, and is applied to the top plate as a force that urges the top plate 10 to rotate. Accordingly, when the top plate 10 starts to rotate, the force required to push up the other end 10b of the top plate 10 can be reduced, and the burden on the person who rotates the top plate 10 can be reduced. And operability can be improved.

  When the ping-pong table is deformed from the storage state to the use state, the other end 10b of the top plate 10 in the storage posture is pulled down and the top plate 10 is rotated.

  When the top plate 10 is rotated from the storage position to the use position, the stay 40 operates as follows. That is, when the top plate 10 is in the stowed position, the first and second arms 41 and 42 are in the closest state, and a finger can enter between the first arm 41 and the second arm 42. (See FIG. 18).

  When the top plate 10 is rotated, the first and second arms 41 and 42 swing in directions away from each other. At this time, when the first shaft 47 rotates with the swing of the first arm 41, the rotor 43 c of the unidirectional damper 43 moves with the rotation of the first shaft 47 by the action of the unidirectional clutch 43 e. Rotate. As a result, the opposed surfaces of the rotor 43c and the disk 43d are displaced from each other, and the resistance of the viscous material filled between the opposed surfaces is generated. Since the first arm 41 swings slowly due to the resistance of the viscous body, the rotational speed of the top plate 10 is also reduced.

  However, since the unidirectional damper 43 exhibits a larger braking force as the rotation angle of the rotor 43c is larger and as the rotation speed of the rotor 43c is faster, immediately after the top plate 10 starts to rotate. Since the rotation angle of the rotor 43c is small, the braking force is small. Therefore, unless the top plate 10 is rapidly rotated, the force required to start the top plate 10 can be reduced, and the operability can be improved.

  At this time, since the spring 50 is wound by the swing of the first arm 41, in addition to the braking force exhibited by the unidirectional damper 43, the braking force exerted by the spring 50 is not limited to the top plate 10. Will be granted. Accordingly, it is possible to more reliably prevent a large impact from occurring at the end of rotation of the top plate 10 where the top plate 10 reaches the use posture.

It is a figure which shows the basic structure of a separate type | formula ping-pong table, (a) is a side view which shows a storage state, (b) is a side view which shows the state in the middle of a deformation | transformation, (c) is a side view which shows a use state, (d ) Is a rear view showing the storage state. It is a figure which shows the basic structure of an internal folding table tennis table, (a) is a side view which shows a storage state, (b) is a side view which shows the state in the middle of a deformation | transformation, (c) is a side view which shows a use state, d) is a rear view showing the storage state. It is a top view which shows the stay (The state where the 1st and 2nd arms adjoined) employ | adopted in Example 1 of this invention. It is a side view which shows the stay (The state where the 1st and 2nd arms adjoined) employ | adopted in Example 1 of this invention. It is a figure which shows the stay employ | adopted in Example 1 of this invention, (a) is a top view which shows the state which 1st and 2nd arms spaced apart, (b) is 1st and 2nd arms. It is a side view which shows the state which separated. It is a figure for demonstrating the structure of a unidirectional damper. It is a figure which shows the state in which the stay was attached to the leg part of a ping-pong table. It is a figure which shows the state by which the leg part of the ping-pong table was folded. It is a rear view which shows the ping-pong table in the accommodation state. It is a figure which shows the state in which the stay was attached to the leg part of the ping-pong table concerning Example 2 of the present invention. It is a figure which shows the state by which the leg part of the ping-pong table concerning Example 2 of this invention was folded. It is a figure which shows the stay (The state where the 1st and 2nd arms adjoined) employ | adopted in Example 3 of this invention, (a) is a top view, (b) is a side view. It is a figure which shows the stay (The state where the 1st and 2nd arms spaced apart) employ | adopted in Example 3 of this invention, (a) is a top view, (b) is a side view. It is a figure for demonstrating arrangement | positioning of a spring. It is a figure for demonstrating arrangement | positioning of a spring. It is a figure for demonstrating the structure of a unidirectional damper. It is a figure which shows the state by which the stay was attached to the leg part of the ping-pong table concerning Example 3 of this invention. It is a figure which shows the state by which the leg part of the ping-pong table concerning Example 3 of this invention was folded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Top plate 20 Leg part 21 Connecting member 22 Inner leg part 23 Outer leg part 24 Link member 25 Caster 30 Connection member 40 Stay 41 1st arm 41A One arm 41B The other arm 41c Hole part 41d Hole part 42 Second arm 42c Hole 42d Second shaft 43 Unidirectional damper 43a Housing 43b Frame 43c Rotor 43d Disk 43e Unidirectional clutch 44, 45 Unidirectional rotating damper 44a, 45a Housing 44b, 45b Frame 44c, 45c Rotor 44d, 45d Disk 44e , 45e One-way clutch 46 shaft 47 first shaft 48 spring receiver 50 spring 60 weight 70 pin

Claims (18)

  A ping-pong table characterized in that a stay for reducing a speed when the top plate is rotated from a storage posture to a use posture is provided on a leg portion that rotatably supports the top plate. The stay
First and second arms whose base ends are connected to each other so that they can swing with each other;
2. The unidirectional damper according to claim 1, further comprising a unidirectional damper that is provided at a connecting portion of the first and second arms and makes the swing of the first and second arms slow. Table tennis table.   When the top plate rotates from the use posture to the storage posture on the leg, the rotation is urged, and when the top plate rotates from the storage posture to the use posture, the rotation speed The table tennis table according to claim 1, further comprising a spring for decelerating the movement.   One end of the spring is supported by one of the first and second arms constituting the stay, the other end is supported by the other arm, and one arm is separated from the other arm. The ping-pong table according to claim 3, comprising a tension coil spring provided to generate elasticity by swinging.   The ping-pong table according to claim 4, wherein the spring is installed so that the amount of tension with respect to the spring is minimized during the rotation of the top plate.   The first and second arms of the first and second arms are elastically generated by swinging one of the first and second arms constituting the stay in a direction away from the other arm. The ping-pong table according to claim 3, comprising a spiral spring provided in the connecting portion.   Each of the unidirectional dampers is filled with a viscous material between opposing surfaces formed therein, and the first and first are utilized by utilizing the resistance of the viscous material that is generated when the opposing surfaces are displaced. The ping-pong table according to any one of claims 2 to 5, comprising a plurality of unidirectional rotating dampers arranged on the same axis to make the swing of the two arms slow.   When the first and second arms constituting the stay do not overlap in an angular range in which they can swing with each other, and when they are in the closest state, they are formed in such a shape that a predetermined interval is formed between them. The ping-pong table according to claim 1, wherein the table tennis table is provided.   The table tennis table according to any one of claims 1 to 8, wherein the first and second arms constituting the stay are pin-joined to the leg portion.   The table tennis table according to any one of claims 1 to 9, wherein a weight is provided near one end of the top board.   One of the first and second arms constituting the stay is attached to the inner leg part constituting the leg part, and the other arm is attached to the connecting member constituting the leg part. The ping-pong table according to any one of claims 1 to 9, characterized in that: First and second arms whose base ends are connected to each other so that they can swing with each other;
A unidirectional damper that is provided at the connecting portion of the first and second arms and makes the swing of the first and second arms slow;
A ping-pong table stay comprising: a spring provided so as to generate elasticity when one of the first and second arms swings in a direction away from the other arm.   The said spring is comprised from the tension coil spring by which one end was supported by either one arm among the 1st and 2nd arms, and the other end was each supported by the other arm. Stay for table tennis.   14. The table tennis table stay according to claim 13, wherein the spring is installed so that the amount of tension with respect to the spring is minimized during the swinging of the one arm.   The ping-pong table stay according to claim 12, wherein the spring comprises a spiral spring provided at a connecting portion between the first and second arms.   Each of the unidirectional dampers is filled with a viscous material between opposing surfaces formed therein, and the first and first are utilized by utilizing the resistance of the viscous material that is generated when the opposing surfaces are displaced. The ping-pong table according to any one of claims 12 to 14, comprising a plurality of unidirectional rotating dampers arranged on the same axis to make the swing of the two arms slow. Stay.   The first and second arms are formed in a shape that does not overlap with each other in an angle range in which the first and second arms can swing with each other and that a predetermined interval is formed between them when they are in the closest state. The ping-pong table stay according to any one of claims 12 to 16. The table tennis table stay according to any one of claims 12 to 17, wherein the first and second arms are pin-joined to leg portions of the table tennis table.

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