KR101722949B1 - damping leg of board for jumping exercise - Google Patents

Abstract

The present invention relates to a shock absorber for a jump motion board. The buffer bridge of the present invention includes a tubular cylinder housing which is mounted on a coupling hole of a main board and has an upper end and a lower end opened; A primary cushioning portion having a cylinder including a piston inserted into an inner surface of the cylinder housing so as to be raised and lowered so as to be primarily buffered; And a secondary buffer for buffering the secondary buffer of the primary buffer.
Accordingly, the present invention absorbs a weak load and impact by the first buffer of the cylinder, absorbs a heavy load and a strong shock by the second buffer of the air cushion, and by this double buffer structure, It can be used to effectively absorb shocks and to minimize the shock that is transmitted from the main board to the floor of the user's body or living room when leaping and landing.

Description

{Damping leg of board for jumping exercise}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cushion bridge for a jump motion board mounted on a bottom surface of a main board which can repeatedly perform jump and landing. More specifically, a plurality of buffer legs for supporting a main board are provided with a cylinder including a piston and an air cushion having an arc-shaped cross-section formed along the main surface on a hollow cylindrical main surface, It is possible to effectively absorb and relieve the shock, and in particular, the elastic member for supporting the piston rod connected to the piston, as well as the elasticity of the spring that constitutes the check valve provided on the piston rod, .

Generally, a jump exercise board is one of the exercise apparatus which is placed in an indoor or living room or a floor, and on which a user repeatedly performs walking, leaping and landing. The board for the jump board consists of a plate-shaped main board and a buffer bridge, which is mounted on the bottom edge of the main board to support the main board and serves as a shock absorber to reduce impact or noise generated when the board is landed.

Among these jump motion boards, the structures shown in the prior art will be schematically described.

Korean Patent No. 10-0446588 has a plate-shaped board as a tread plate and a buffer bridge having a body arranged in layers at two or more ends along the height direction so as to buffer the load applied from the top of the board at the bottom of the board, The buffer legs are arranged at a lower portion of the board in a triangular configuration, and the body has a plurality of unit members arranged in three tiers along the height direction. In addition, the buffer leg is provided with an air exhaust control part for partially exhausting the buffer air contained in the body.

The above-mentioned leaping motion board can be referred to as a cushion bridge. The cushion bridge is a tubular structure in which the body is arranged in two or more unit members having an empty space inside. The strong and weak impact load according to the weight of the user is effectively And the shock absorptive effect is achieved only for the average weight load.

Particularly, when the weight of the user is greater than the standard weight, the impact load rapidly increases when the user's weight is increased during the leaping motion, so that the unit members of the cushion legs are flatly deformed and engaged with each other, There is a problem in that it can not absorb a proper impact load and even damages that the buffer leg is deformed.

In FIG. 4 of Korean Patent No. 10-0844000, a fastening protrusion for mounting the upper main board in a one-touch manner is provided on the bottom edge of the main board in a hollow tube shape with a buffer leg stably supporting the main board.

The above-described conventional jump motion board has a structure in which the cushion legs are simply formed in a multi-stage cylindrical structure in which the interior is hollow, that is, a cylindrical structure in which the cushion legs are continuously stacked in a semi- The impact absorption is achieved only for the average weight load without effectively absorbing the impact load. If the weight of the user is slightly light, the reaction force of the feeling of splashing will cause a half effect of the exercise effect. On the contrary, if the user's weight is heavy Since the end portions are in contact with each other without being able to overcome the impact load, they can not absorb a proper impact load, and even damage to the cushion legs is caused.

In Korean Patent No. 848353, an air movement passage is formed so as to communicate with the inside of each cushioning member provided at a lower portion of the foot plate (main board), and an air movement control section is provided at an intersection of the air movement passage. The load applied from the upper portion is elastically deformed by the cushioning member, and the amount of movement of the air discharged through the air movement adjusting portion is controlled to buffer and reduce.

Such a jump motion board as described above has a problem such as the above-mentioned patents, since the buffer leg, which is a buffer member, is simply formed as a hollow conical-shaped corrugated pipe.

Particularly, if the amount of discharged air of the air movement control unit can not be adjusted properly, the foot plate may be rocked like an air mat, so that the function of the board or mat for exercise is reduced.

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems and disadvantages of the related art, and its object is to be listed.

The first object of the present invention is to provide a cylinder having a piston and a primary and secondary cushion portions made of an air cushion having an arcuate section convex outwardly along a cylindrical main surface in which the hollow is hollow, And absorbs the heavy load and strong impact by the second cushion of the air cushion. By this double cushioning structure, it is possible to more effectively absorb and absorb the strong and weak impact, so that the user's body And to minimize shock transmitted to the floor of a living room or the like.

A second object of the present invention is to provide a piston which is in close contact with a piston at a lower end of the piston rod to some extent and which is opened and closed and at least one orifice is provided on the outer surface of the piston, And the piston rod and the piston are spaced apart from each other in a non-load state so that the air can be circulated quickly, thereby promptly returning to the piston.

Thirdly, when a check valve is provided on a piston rod provided together with the piston, when the pressure greater than the design impact force acting on the piston is applied, the check valve is opened instantaneously to alleviate the external impact and the elastic force of the spring provided in the check valve It is intended to provide a cushion bridge for a leaping motion board which can be used variously from children to adolescents as well as to adults.

In order to accomplish the above object, according to the present invention, there is provided a cushioning foot for a jump motion board, the cushioning foot comprising: a cylindrical cylinder housing mounted to a coupling hole of a main board and having an upper end and a lower end opened; A primary cushioning portion having a cylinder including a piston inserted into an inner surface of the cylinder housing so as to be raised and lowered so as to be primarily buffered; And a secondary buffer which is provided so as to be buffered secondarily at the lower end of the cylinder of the primary buffer.

In accordance with the present invention, there is provided a cushioning foot for a jump motion board, wherein the primary cushioning portion is a cylindrical cylinder inserted into an inner surface of a cylinder housing and vertically raised and lowered, A piston inserted and raised on the inner surface of the cylinder and provided with at least one orifice; A piston rod provided on an inner surface of an upper end of the cylinder to support the piston to prevent the piston from being separated from the piston; And an elastic member provided so as to protrude downward from the cylinder housing in the cylinder.

The piston and the piston rod are boss holes provided at the center of the piston, and the boss protruding from the lower surface of the piston rod is inserted and raised in the boss of the piston rod. It is preferable that a pair of seal structures corresponding to each other are provided so as to be spaced up and down from each other in a no-load state so that air is rapidly circulated and closely contacted in a load-loaded state.

Preferably, an outer surface of the piston in contact with the inner surface of the cylinder is provided with an orifice that induces an appropriate air flow to maintain a constant pressure and descent rate when a load is applied to the piston.

Preferably, the piston is provided with a flexible material, for example, rubber, so that the outer diameter of the piston is expanded according to the pressure applied to the inside of the cylinder, thereby reducing the orifice.

Preferably, the boss of the piston rod is provided with a check valve for relieving an impact when a pressure equal to or higher than a set value is applied to the inside of the cylinder.

In the buffering leg for a jump exercise board according to the present invention, the secondary buffering portion may include a fastening protrusion, which is inserted and fixed into the fastening groove of the cylinder, And an air cushion having a convex arc-shaped cross-section formed along the main surface of the main surface.

As described above, the cushioning leg for a jump motion board of the present invention as described above comprises a cylinder-shaped first buffer portion including a piston, and a second buffer portion which is an air cushion having an arcuate cross- It absorbs the weak load and shock by the cylinder and can absorb the heavy load and the strong impact by the air cushion. By this, it is possible to more effectively absorb and absorb the strong and weak impact by the double buffer structure. .

Further, according to the present invention, when a load is applied to a piston in a load-loaded state by providing at least one orifice on the outer surface of the piston, the piston rod is brought into close contact with the piston, Air flow is induced to keep the pressure and the descending speed at a constant level, and in the no-load state, the piston rod and the piston are separated from each other up and down so that the air circulation can be performed quickly.

Further, according to the present invention, when a check valve is provided on a piston rod provided together with a piston, when a pressure greater than a design impact force acting on the piston is applied, the check valve is momentarily opened to alleviate an external impact, It can be used in various ways from children to adolescents to adults.

1A and 1B are views showing a state in which a shock absorber for a jump motion board according to the present invention is coupled to a main board.
2 is an exploded perspective view showing a buffer leg for a jump exercise board according to a preferred embodiment of the present invention.
3 is an assembled sectional view of Fig.
FIG. 4 is a view for explaining a portion where the cylinder and the air cushion are coupled in FIG. 2. FIG.
5 and 6 are views for explaining a state in which a shock absorber for a jump motion board according to the present invention is operated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a shock absorber for a jump exercise board according to the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1A and 1B are views showing a state in which a shock absorber for a jump motion board according to the present invention is coupled to a main board. FIG. 2 to FIG. 4 illustrate a shock absorber for a jump motion board according to a preferred embodiment of the present invention And FIGS. 5 and 6 are diagrams for explaining a state in which the buffer leg of the present invention is operated.

As shown in the figure, the cushioning leg 100 for a jump motion board of the present invention is provided at the edge of the main board 90 so as to stably balance and support a plate-shaped main board 90, And a cylinder 120 including a piston 130 is inserted into and lifted from the inner surface of the cylinder housing 110 so as to be primarily buffered And an air cushion 160 is provided at the lower end of the cylinder 120 of the primary cushioning portion to constitute a secondary cushioning portion for secondary cushioning.

The cylinder housing 110 has a cylindrical shape with an upper end and a lower end opened to smoothly insert the cylinder housing 110 from the lower portion of the coupling hole 92 of the main board 90. The upper end of the cylinder housing 110 has a latching protrusion 112 The lower end portion of the holder 114 is provided with a holder 114 for preventing slippage when gripped for assembling while being engaged with the lower end of the coupling hole 92, And an inner surface stepped surface 116 is provided. The latching protrusion 112 is for inserting the cylinder housing 110 into the main board in a one-touch manner. When the main body board 90 is inserted into the coupling hole 92 of the main board 90, the latching protrusion 112 is elastically It is enough if it is provided.

The primary cushioning part is composed of a cylinder 120, a piston 130, and a piston rod 140, which is a first buffering part of the cylinder 120 which is resiliently installed in the cylinder housing 110,

 The cylinder 120 is inserted into the inner surface of the cylinder housing 110 and is vertically raised and lowered. The cylinder 120 is formed in a cylindrical shape having a cup type cross section with its lower end closed. 116, and the inner bottom is provided with a spring, which is an elastic member 146, to be seated without flowing.

A coupling groove 124 for coupling with the air cushion 160 is formed on the outer surface of the lower end of the cylinder 120. The coupling groove 124 is cut from the lower end to the upper end, As shown in Fig.

Since the piston rod 140 together with the piston 130 must be relatively lifted and lowered by the cylinder 120 on the inner surface of the upper end of the cylinder 120 so that the piston rod 140 is not separated from the cylinder 120, And a ring seat 125 for seating the seat 126 is provided.

The piston 130 is provided to flow upward and downward to some extent from the boss 142 at the lower end of the piston rod 140 and is provided in the shape of a Chinese character inserted in the inner surface of the upper part of the cylinder 120 A ring seating groove 132 through which the boss 142 of the piston rod 140 penetrates is provided at the center and an appropriate air flow is induced to the outer surface of the cylinder 120 in contact with the inner surface thereof when a load is applied to the piston 130 An orifice 134 is provided to maintain a constant pressure and descent rate.

The piston 130 is provided with a flexible material such as rubber or the like so that the outer diameter of the piston 130 is expanded according to the pressure applied to the inside of the cylinder 120 so that the orifice 134 becomes small. Since the piston 130 is made of rubber, which is a flexible material, a reinforcement plate 136 is provided at the upper end of the inner surface of the piston 130 to prevent the piston 130 from being deformed and to reinforce the piston 130. A sealing protrusion 138 protruded upward is provided on the upper surface of the piston 130 on the outer side of the boss hole 132 so as to have a sealing structure with the lower surface of the piston rod 140.

The piston rod 140 is provided with a hollow boss 142 protruding downward at the center of a cylindrical body 141 having a lower end closed, and the cylindrical body 141 and the boss 142 are integrally formed with a plurality of radially arranged ribs And a sealing groove 144 is formed on the lower surface of the boss 142 on the lower surface of the cylindrical body 141 so as to receive and seal the sealing protrusion 138. The cylindrical body 141 of the piston rod 140 is engaged with the lower end of the C-shaped ring 126 of the cylinder 120 when the cylinder 120 and the piston rod 140 are relatively moved, The lower end is provided with a smaller diameter to prevent it.

When the piston 130 and the piston rod 140 are separated from each other by an unloaded state, the air flow is rapidly performed and the load protrusion 138 and the sealing groove 144 are in a load load state, that is, And the piston rod 140 are in close contact with each other, sealing is performed.

The inner surface of the cylinder 120 and the boss 142 of the piston rod 140 are elastically deformed in the cylinder 120 so that a force for projecting the cylinder 120 to the lower side always acts in the cylinder housing 110. [ Member 146 is provided. It is preferable that the elastic member 146 is provided in a conical shape so that the upper end of the elastic member 146 is seated on the valve body 152 of the check valve 150 and the lower end thereof is seated on the inner bottom surface of the cylinder 120,

The elastic member 146 should be provided on the main board 90 in such a manner that when the user is absent, that is, in a no-load state, the cylinder 120 is projected downward and the main board 90 is closed . The upper and lower ends of the elastic member 146 should be set on the inner bottom of the check valve 150 and the cylinder 120 of the boss 142 so that the elastic member 146 does not interfere with the piston 130. This is because when the elastic member 146 pushes the piston 130 upward, the lower surface of the piston rod 140 and the upper surface of the piston 130 are in close contact with each other, so that the sealing protrusion 138 and the sealing groove 144 are engaged with each other, So that air circulation in the cylinder 120 is not smoothly performed.

The check valve 150 is provided in the boss 142 of the piston rod 140 to discharge the pressure of the piston rod 140 to the upper portion of the piston rod 140 when the pressure in the cylinder 120 is higher than a predetermined pressure. A valve body 154 and a spring 156 are provided in the flow hole of the valve body 152 so as to prevent the valve body 154 from being forced to block the flow hole of the valve body 152 by the spring 156 Respectively. The spring 156 of the check valve 150 may be provided with various elastic repulsive forces from small to large. In this case, the spring 156 of the check valve 150 may be adapted to be suitable for a body such as a youth or an adult And thus it is possible to broaden the base of the user without being compromised.

The upper portion of the piston rod 140 and the cylinder housing 110 is preferably provided with an air passage such as a groove that can smoothly escape to the outside when the air in the cylinder 120 is discharged.

The secondary cushion 160 is an air cushion 160 fastened to the lower end of the cylinder 120 constituting the primary cushion in a one-touch manner. The air cushion 160 is inserted into the lower end of the cylinder 120, And the lower end thereof is closed. The upper surface of the air cushion 160 is provided with a fastening protrusion 162 to be inserted into and fastened to the fastening groove 124 of the cylinder 120. At least one arc end surface 164, Lt; / RTI > The air cushion 160 should be formed of a material that is flatly deformed when a load is applied and can be returned to its original state when the load is removed.

1, the upper end of the piston rod 140 in the cylinder housing 110 is inserted into the coupling hole 92 of the main board 90 from the lower portion thereof, And is held in contact with the upper bottom surface of the board 90. The cylinder 120 and the air cushion 160 are protruded from the cylinder housing 110 due to the elastic force of the boss 142 of the piston rod 140 and the elastic member 146 installed on the bottom of the cylinder 120. [ .

The assembled jump motion board is installed on the floor of a living room or a veranda such that the floor of the air cushion 160, which is the second buffer part of the cushion bridge of the present invention, is placed. When the user stands on the main board 90, It can perform walking, running and leaping while enjoying the presented learning game.

In the cushioning leg according to the present invention, when the cylinder 120, which is the primary cushioning portion, and the air cushion 160, which is the secondary cushioning portion, are compressed and expanded, Absorbs and acts as a stable support.

At this time, when the user hits the main board 90 or a small impact due to landing is applied after the jump, the air in the cylinder 120 flows through the boss 142 of the piston rod 140, The piston 130 is pushed upward by the gap formed between the boss holes 132 of the piston 130 so that the piston 130 is pushed to the top of the piston 130 while pressure is generated in the cylinder 120, And is brought into close contact with the lower surface of the piston rod 140.

When the upper surface of the piston 130 is in close contact with the lower surface of the piston rod 140, the air in the cylinder 120 is discharged only through the orifice 134 on the outer surface of the piston 130. Since the piston 130 is fixed to the lower surface of the piston rod 140 when the air is discharged, the pressure inside the cylinder 120 is maintained at a predetermined pressure. Therefore, the cylinder 120 is relatively moved upward The buffering is performed.

As the user's body size becomes larger and smaller at the time of leaping and landing, the impact force is generated in the cylinder 120 as pressure. For example, when the pressure in the cylinder 120 is small, the air flow rate is slowed out through the orifice 134 without changing the size of the orifice 134. When the pressure in the cylinder 120 is high, The piston 130 is expanded and discharged through the orifice 134 at an increased air flow rate in a state in which the orifice 134 of the outer surface of the piston 130 is reduced. Thus, the speed and pressure of the cylinder 120 are kept constant I will.

5, the air cushion 160 mounted on the lower end of the cylinder 120 is also compressed by the cylinder 120 and the piston 130, 6, the arc-shaped end face 164 is flatly deformed elastically, absorbing a relatively large impact, thereby alleviating the secondary impact. At this time, when the piston 130 is not generated at a constant pressure while generating the pressure in the cylinder 120, the arc-shaped end face 164 of the air cushion 160 is flattened and elasticity, To the cylinder 120 through the engagement groove 124 of the cylinder 120 to compensate for the pressure generation of the cylinder 120.

The check valve 150 provided in the boss 142 of the piston rod 140 is temporarily opened when the pressure exceeding the designed value is generated in the cylinder 120 when the pressure is buffered through the primary and the secondary, Since the air in the cylinder 120 is discharged and then closed, the internal pressure of the cylinder 120 is maintained at a pressure lower than the designed value.

When the impact or load transmitted through the main board 90 upon landing starts to be removed from the main board 90 in order to jump, the arc-shaped end face 164 of the air cushion 160 first returns to the original state, And when the load applied to the main board 90 is completely removed, the restoring force of the elastic member 146 installed between the boss 142 of the piston rod 140 and the cylinder 120 causes the cylinder 120 to move downward The main board 90 is returned to the original position.

The buffer bridge for a jump motion board according to the present invention can be modified in various ways, such as a coupling hole of a main board, a latching protrusion of a cylinder housing mounted on the coupling hole, and a shape of a piston rod. It is to be understood that various changes and modifications may be made without departing from the scope of the present invention.

The present invention relates to a jumping exercise apparatus that can enjoy a jump movement without damaging the surrounding people in a living room or a veranda of the room without damaging it, And can be used to exercise while following.

90: main board 100: buffer leg 110: cylinder housing
112: latching protrusion 114: holder 116: inner surface step
120: cylinder 122: outer surface step 124: fastening groove
125: ring seating groove 130: piston 132: ring seating groove
134: orifice 136: reinforcing plate 138: sealing projection
140: piston rod 141: cylindrical body 142: boss
143: rib 144: sealing groove 146: elastic member
150: check valve 152: valve body 154: valve body
156: spring 160: air cushion 162: fastening projection
164: arc-shaped cross section

Claims (7)

A cylindrical cylinder housing mounted to the coupling hole of the main board and having an upper end and a lower end opened; A primary cushioning portion having a cylinder including a piston inserted into an inner surface of the cylinder housing so as to be raised and lowered so as to be primarily buffered; And a secondary buffer provided so as to be secondarily buffered at the lower end of the cylinder of the primary buffer,
The primary buffer is a cylindrical cylinder inserted into an inner surface of a cylinder housing and vertically lifted and lowered and having a cup type cross section with a lower end closed; A piston inserted and raised on the inner surface of the cylinder and provided with at least one orifice; A piston rod provided on an inner surface of an upper end of the cylinder to support the piston to prevent the piston from being separated from the piston; And an elastic member provided on the cylinder housing so as to protrude downward from the cylinder housing. delete The method according to claim 1,
The piston and the piston rod are boss holes provided at the center of the piston, and a boss protruding from the lower surface of the piston rod is penetrated and raised or lowered in the boss of the piston rod. The upper surface of the piston and the lower surface of the piston rod Wherein a pair of seal structures corresponding to each other are provided so as to be spaced up and down from each other in a no-load state so that air is rapidly circulated and closely contacted in a load-loaded state. The method according to claim 1,
Wherein an outer surface of the piston in contact with the inner surface of the cylinder is provided with an orifice for inducing an air flow to maintain a constant pressure and a descending speed when a load is applied to the piston. The method according to claim 1,
Wherein the piston is made of a flexible material so that the outer diameter of the piston is expanded according to a pressure applied to the inside of the cylinder, thereby reducing the orifice. The method of claim 3,
Wherein the boss of the piston rod is provided with a check valve for releasing a shock when the pressure in the cylinder is greater than a predetermined value. The method according to claim 1,
The secondary cushioning part is provided with a fastening protrusion for inserting the upper end of the cylinder into the lower end of the cylinder and inserting the upper end of the cylinder into the fastening groove of the cylinder, and the main surface of the secondary cushioning part is provided with an air cushion having an arcuate cross- A shock absorber for the jump board.

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