KR101084699B1 - Hydraulic cylinder of control part for exercise apparatus - Google Patents

Abstract

The present invention is a control device for a hydraulic cylinder for exercise equipment that can maximize the convenience of individual control of a plurality of exercise equipment and the user's exercise effect by automatically adjusting the exercise load (hydraulic value) of the hydraulic cylinder by electronic control A cylinder chamber of a double chamber divided into an inner chamber and an outer chamber, each of which is sealed by a rod cover and a head cover and filled with an incompressible fluid, and a piston installed in the inner chamber and reciprocating; The rod cover and the head cover are connected to one side of the piston by connecting the piston rod which protrudes outward from the other side to the rod cover and the airtight state, and a connection flow path between the rod cover and the head cover. An induction pipe circulating and guiding in one direction through the inner chamber and the outer chamber via the sequential movement of the piston Air cylinders containing air in the outer chamber and compensated for the volume change of the stone rod, and the incompressible fluid that senses the hydraulic pressure of the cylinder chamber from the head cover and circulates the cylinder chamber by electronic control. Provided is a control device for a hydraulic cylinder for an exercise machine, comprising an exercise load control means for setting a flow pressure to control an exercise load suitable for a user.

Incompressible fluid, compressible compensation means, double chamber, check valve, motion load control means

Description

HYDRAULIC CYLINDER OF CONTROL PART FOR EXERCISE APPARATUS}

The present invention relates to a hydraulic cylinder applied to an exercise device that can obtain the exercise effect by pushing and pulling by using the muscle strength of the lower body, arms, etc. In particular, the exercise load (hydraulic value) of the hydraulic cylinder of the prior application to the electronic control The present invention relates to a control device for a hydraulic cylinder for an exercise device that can maximize the convenience of individual control of a plurality of exercise devices and the user's exercise effect by automatic adjustment.

In general, various kinds of exercise equipments have been recently disclosed for the purpose of health promotion, and these exercise equipments are installed and used indoors or outdoors such as health clubs and homes.

Such exercise equipment, for example, rowing machine, stepper, weight training device, etc. by using the muscle strength of the arm and leg to suppress the movement of the reciprocating movement according to the push and pull to obtain the exercise effect by generating an appropriate exercise load, Hydraulic cylinders have been applied to such exercise equipment as a means of suppressing reciprocation.

Conventional hydraulic cylinders for exercise equipment have a reciprocating motion of the piston, which is difficult to occur due to the volume change of the fluid (oil) filled in the position chamber of the piston rod and the opposite side chamber centered on the piston in a closed cylinder chamber. Could not provide a stroke,

The hydraulic control by the valve installed between the connecting pipes connecting the two chambers divided by the piston of the cylinder controls the flow rate of the flow rate instead of the hydraulic force control. There was a downside to not expect it to work,

To provide fluid flow to the chambers on both sides of the cylinder chamber, draw connections on both sides of the cylinder tube and configure valves between them, limiting the disadvantages of increased volume and the flow of fluid (oil). In accordance with the reciprocating motion of the piston, it is not possible to provide a regular reciprocating motion of the piston corresponding to the volume change of the fluid (oil) by alternately moving and filling the divided sides.

Thus, the present applicant effectively compensates for the volume change of the piston's traction and thrust motion with respect to the fluid (oil) filled in the closed (closed) cylinder chamber in order to solve the disadvantage of the conventional hydraulic cylinder for exercise equipment as described above. Can provide precise and constant speed of reciprocating motion,

While inducing the flow of fluid according to the traction and thrust of the piston in one direction, the pressure control of the fluid rather than the flow rate of the fluid ensures the ease and precision of the adjustment of the traction and thrust load of the piston,

Since the flow of fluid is provided by the internal circulation structure instead of the external circulation structure, it is provided as a compact structure by simplifying the structure, and it can be applied to all indoor and outdoor exercise equipments in which fluid cylinders are used. 'Hydraulic Cylinder for Machinery' (Patent Application No. 10-2008-0120373) has been filed in advance.

As described above, the applicant's prior application technology solves the disadvantages of the conventional hydraulic cylinder for exercise equipment, but it is possible to control the movement load (hydraulic value) inside the cylinder chamber by hand, which is suitable for the user. It was difficult to control the load.

In particular, the exercise load adjustment by manual operation has a disadvantage in that it is difficult to collectively control the exercise load for each user who uses each exercise device in a single control room by electronic control.

Accordingly, the present invention is characterized in that the exercise load (hydraulic value) derived from the applicant's prior application technology can be controlled electronically in a single control room to effectively control individual exercise loads of a plurality of exercise equipments.

In addition, the present invention is characterized by maximizing the exercise effect of each user by simply controlling the exercise load (hydraulic value) of each exercise device according to the exercise prescription of the user.

In order to achieve the above object, in the present invention, the incompressible fluid is filled in the cylinder chamber of the double chamber divided into the inner chamber and the outer chamber, which are sealed by the rod cover and the head cover at both sides of the outer tube and the inner tube and are filled with an incompressible fluid. cylinder;

A piston installed in the inner chamber to reciprocate;

A piston rod which is assembled with one side of the piston and protrudes the other side to the outside in an airtight state with the rod cover;

An induction pipe connecting the connection flow path between the rod cover and the head cover to circulate the incompressible fluid of the inner chamber in one direction through the rod cover and the head cover in one direction;

An air tube accommodating and sealing air therein to be accommodated in the outer chamber to compensate for the volume change of the piston rod due to the reciprocating motion of the piston;

Motion load control means for sensing the hydraulic value of the cylinder chamber in the head cover and controls the movement load for the user by setting the flow pressure of the incompressible fluid circulating through the cylinder chamber by electronic control;

It is characterized by the configuration.

In addition, the movement load control means includes a stepping motor for setting a rising range of the valve tip for opening and closing the connection flow path between the head cover and the cylinder chamber, a hydraulic sensor for sensing the hydraulic value of the cylinder chamber from the head cover; The controller is configured to control the stepping motor by sensing the hydraulic sensor.

In addition, the present invention is the piston of the piston rod by the traction of the piston is compressed flow through the inner chamber (towing compression chamber) in the state that the check valve is closed, the inner chamber on the opposite side through the check valve configured in the head cover At the same time, the incompressible fluid of the outer chamber is circulated and supplied to the inner chamber (thrust compression chamber) and the compressive compensation means (air tube) accommodated in the outer chamber occupies the space occupied by the piston rod. It is characterized by expanding and compensating for constant speed and precise running of the piston.

Further, the present invention compresses and flows the inner chamber (thrust compression chamber) in a state where the check valve of the head cover is closed by the thrust of the piston so that incompressible fluid is transferred to the inner chamber on the opposite side through the check valve of the piston. The non-compressible fluid contracts and compensates the compressible compensating means (air tube) accommodated in the outer chamber by the volume of the piston rod which is increased while being circulated and supplied to the chamber.

The control device of the hydraulic cylinder for exercise equipment according to the present invention has the advantage that can effectively control the exercise load (hydraulic value) for the user in a single control room to effectively control the individual exercise load of multiple exercise equipment have.

And by simply controlling the exercise load (hydraulic value) of each exercise device according to the user's exercise prescription has the advantage that can maximize the individual exercise effect.

Moreover, there is an advantage that the pressure control of the fluid in accordance with the traction and thrust of the piston is provided electronically to ensure reliability by precise control.

In addition, the compact structure provides the convenience of equipment application and product compatibility.

Hereinafter, the configuration and operation of the present invention for achieving the above object with reference to the accompanying drawings in detail.

1 to 5 and 9 show an assembly for the control device of the hydraulic cylinder for the exercise device of the present invention.

The control device of the hydraulic cylinder for exercise equipment of the present invention is the cylinder chamber 100, the piston 200 accommodated in the cylinder chamber, the piston rod 300 is assembled with the piston, and the cylinder chamber 100 It has a component of an induction pipe 400 connecting both sides of the air tube 500 and the movement load control means 600 accommodated in the cylinder chamber 100.

The cylinder chamber 100 is divided into an outer chamber 101 and an inner chamber 102 by a rod cover 130 and a head cover 140 in which the outer tube 110 and the inner tube 120 are assembled at both sides. It is formed of a double chamber and filled with an incompressible fluid inside.

At this time, the rod cover 130 and the head cover 140 are coupled to the O-ring (O.R) in the state in which the respective connecting flow paths 131 and 141 are processed to maintain the airtight state.

And the inner tube 120 is inserted into the piston 200 to reciprocate by sliding the inner circumferential surface, the inner chamber 102 is a compression compression chamber (TPC) is compressed by the advance (pushing) of the piston 200 And a traction compression chamber (APC) that is compressed by retraction (pull).

The piston 200 is assembled by fitting a piston packing (P.K) to the outer peripheral surface to maintain the airtight between the thrust compression chamber (T.P.C) and the traction compression chamber (A.P.C).

The inner tube 120 has both the rod cover 130 and the head cover 140 at both sides of the outer tube 110 in a state in which both ends thereof are fitted into the step grooves 132 and 142 which are machined inwards. Are assembled.

That is, the head cover 140 is assembled by screwing to the stepped screw portion 111 of one side of the outer tube 110, the rod cover 130 is also a stepped screw portion processed on the other side of the outer tube (110). The inner tube 120 is tightly fixed between the rod cover 130 and the head cover 140 by screwing the fixing nut 135 screwed to the rear in the state fitted to the (112).

The piston 200 has one side of the piston rod 300 is assembled and the other side through the rod cover 130 and the fixing nut 135 by the O-ring (OR) and the packing (PK) interposed on each inner peripheral surface It protrudes to the outside in airtight condition.

At this time, the outer circumferential surface of the piston rod 300 is further referring to Figure 6, the smoothness and connection of the movement of the piston rod 300 through the metal bearing 136 in the rod hole penetrated through the rod cover 130 The unnecessary through portion (vertical processing portion) of the flow passage 131 is sealed.

And further referring to Figure 7, the piston 200 is a plurality of to provide a flow of incompressible fluid that is compressed to the thrust compression chamber (TPC) of the inner chamber 102 during the thrust movement (pushing) of the piston rod 300 The flow path 210 is penetrated, and the check valve 250 to control the flow of the fluid through the one direction is configured.

The check valve 250 is composed of a leaf spring 251 for close contact with one side surface of the flow path 210 and a stop ring 252 for limiting the deformation range of the leaf spring.

The check valve 250 is inserted into the stop ring 252, the leaf spring 251, the piston 200 in sequence to the stepped screw rod 310 of the piston rod 300, the screw coupling of the tightening nut 253 The leaf spring 260 is assembled in close contact with the flow path 210 by tightening by.

As shown in the enlarged excerpt of FIG. 11, the leaf spring 251 of the check valve 250 has a large compressive force of an incompressible fluid of a thrust compression chamber (TPC) due to the movement of the piston 200, resulting in an incompressible balance. The fluid is adapted to push and flow the leaf spring 251 through the flow path 210 of the piston 200, the deformation caused by the original return of the leaf spring 251 is suppressed by the stop ring 252 do.

In this way, the incompressible fluid that is compressed and flows through the check valve 250 is circulated in one direction of the inner and outer chambers 101 and 102 through the connection passage 141 of the head cover 140.

The induction of the circulation of the incompressible fluid is made by the induction pipe 400 connecting the connection passage 131 of the rod cover 130 and the connection passage 141 of the head cover 140.

Of course, the induction pipe 400 is also assembled in a state in which both end portions are fitted in the connection passages 131 and 141, respectively, as in the coupling of the inner tube 120 interposed between the rod cover 130 and the head cover 140. .

In addition, the head cover 140 blocks the flow of incompressible fluid of the thrust compression chamber (TPC) through the connecting pipe 141 of the head cover 140 during the thrust movement of the piston 200, the induction A check valve 260 is installed to open the flow of the incompressible fluid compressed and flown by the pipe 400.

Referring to FIG. 8, the check valve 260 may further include a support cover 261 penetrating through a plurality of flow path holes 262 communicating with a connection flow path 141 of the head cover 140 and the support cover. A leaf spring 263 for opening and closing the flow path 262, a compression spring 264 for closing the flow hole 262 by elastically supporting the leaf spring, E for supporting and fixing the compression spring in the support cover 261 It consists of a mold stop ring 265.

The compression spring 264 elastically supports the leaf spring 263 as a conical spring and closes the one side surface of the support cover 261 to block the flow path hole 262.

At this time, the connection passage 141 of the head cover 140 passes through the long hole 145 formed in the horizontal direction so as to connect the inner chamber 102 and the outer chamber 101 at the same time, as shown in FIG. do.

Referring to FIG. 11, the role of the long hole 145 may be due to the pushing operation of the piston 200 of the piston rod 300, that is, the incompressible fluid of the inner chamber 102, that is, the thrust compression chamber TPC. The check valve 260 of the head cover 140 is closed by compression, and the incompressible fluid of the thrust compression chamber (TPC) opens the check valve 250 of the piston 200 by continuous compression of the incompressible fluid. And flows to the inner side chamber 102 on the opposite side, that is, the traction compression chamber APC, and connects the connection passage 131 of the rod cover 130, the guide tube 400, and the connection passage 141 of the head cover 140. Through the long hole 145 of the outer chamber 101 is bound to flow.

The incompressible fluid can be flowed to the outer chamber 101 such that the incompressible fluid that is compressed and flows in the incompressible fluid filled in the sealed space by the air tube 500 accommodated in the outer chamber 101 can be compensated (contracted). By being accommodated, forward movement of the piston 200 is provided.

5 and 10, the reverse operation of the piston 200, the check valve 250 of the piston 200 is closed by pulling the piston rod 300 and at the same time the inner chamber 102 That is, the incompressible fluid of the traction compression chamber (APC) is compressed and flows, and the incompressible fluid thus compressed is flowed through the connection passage 141 of the head cover 140 through the induction pipe 400.

In this process, the incompressible fluid is opened while the check valve 260 of the head cover 140 is opened by the incompressible fluid that is compressed and flows while breaking the pressure balance of the inner chamber 102, that is, the thrust compression chamber (TPC). Compression flow into the chamber (TPC) and at the same time the pressure balance of the outer chamber 101 is broken.

Therefore, the compressed air tube 500 is expanded again to its original state, and the incompressible fluid of the compressed volume of the air tube 500 passes through the thrust compression chamber through the long hole 145 of the head cover 140. Pressure equalization is achieved by compression flow into the TPC.

That is, the air tube 500 is to compensate for the volume change of the piston rod 300 by the reciprocating movement of the piston 200 according to the pushing and pulling of the piston rod 300.

The air tube 500 is provided in a tightly filled incompressible fluid by providing a flow space (increased volume by a piston rod) of the incompressible fluid that compressively flows to the outer chamber by contraction and return expansion with respect to the compressed flow of the incompressible fluid. Reciprocating movement of the piston 200 becomes possible.

In other words, the present invention provides the movement of the incompressible fluid in the limited container by the air tube 500, thereby eliminating the need for a space where the incompressible fluid can move as in the prior art, minimizing the volume, as well as precision and accuracy of operation. This is provided.

As shown in FIG. 12, the air tube 500 may include a sealed air bag in which the air capable of volume change (compression) by a constant pressure is contained in the vinyl tube, and the air tube 500 is sealed. Is rolled around the outer circumferential surface of the inner tube 120 and is freely accommodated in the outer chamber 101.

The head cover 140 passes through a multi-stage stepped hole 143 in a vertical direction communicating with the connection channel 141, thereby controlling a flow of an incompressible fluid that is compressed and flows through the connection channel 141. The control means 600 is provided.

As shown in FIGS. 4, 8, 10, and 11, the exercise load control means 600 is connected to the conduit of the connection flow path 141 to adjust the compressive force of the incompressible fluid circulated through the induction pipe 400. The valve tip 151, which is assembled in the stepped hole 143 of the multi-stage stepped through, through the connecting flow path 141, and the lifting nut 152 assembled in the anti-rotation state, the lifting nut and the screw A screw rod 153 assembled and screwed up and down to operate the elevating nut 152 by a screw rotation, and is elastically installed between the valve tip 151 and the screw rod 153 to be vertically moved by the elevating nut 152. Compression spring 154 that is compressed and relaxed by the support, and the support knob 155 screw-assembled in the stepped hole 143 while supporting the axial rotation of the screw rod 153 and the support knob Stepping motor 6 assembled by connecting the motor shaft 611 with the upper portion of the screw rod 153 10) and the hydraulic sensor 620 installed in the sensing pipe passage 141a processed in communication with the connection passage 141 to sense a hydraulic value, and receives the hydraulic value electrically connected to the hydraulic sensor and sensed. The controller 630 is electrically connected to the stepping motor 610 to adjust the amount of rotation.

At this time, the controller 630 is electrically connected to the control room (C / B) to control the comparison and control the normal data value to compare and determine the hydraulic value received from the hydraulic sensor 620 to determine the controller 630 By controlling the amount of rotation of the stepping motor 610 is controlled.

The lifting nut 152 is provided with a key groove 152a in the vertical direction, and a spring pin 159 inserted through the key hole 146 and fitted thereto in the upper part of the long hole 145 of the head cover 140 is assembled. By preventing the rotation of the lifting nut 152 to provide a screw rotation of the lifting rod 153, the lifting nut 152 is elevated in the vertical direction.

The upper part of the multi-stage stepped hole 143 is machined and screwed through the threaded portion of the support knob 155, and the screw rod 153 is assembled by assembling the O-ring (OR) and the stepped hole 143 Is confidential.

The screw rod 153 is inserted into the upper end of the vertical shaft hole of the support knob 155, and is machined at the lower end of the coupling rod 612 fixed to the key groove and the motor shaft 611 by a forced press in the upper end Key protrusions are coupled to each other and the motor shaft 611 and the screw rod 153 are connected to each other.

In addition, the stepping motor 610 is fixed to the setting screw 157 is assembled by screwing the outer peripheral surface of the support knob 155 through a screw hole penetrated to one side of the body.

The screw rod 153 rotates synchronously with the rotation of the motor shaft 611, and the lifting nut 152 which is screwed to the screw rod 153 moves up and down, thereby increasing the elastic force of the compression spring 154. By adjusting the valve tip 151 to set the rising range can control the compressive force of the incompressible fluid in the compression flow.

The core technology of the present invention as described above is the compression (volume change) of the incompressible fluid enclosed in a limited space (cylinder chamber: 100) by the compressible gas (air) accommodated in the air tube 500, the flow by contraction and expansion return By providing a movement of the piston 200 to push and pull the piston rod 300 as well as to control the movement load according to the user electronically.

That is, the present invention compresses and flows the inner chamber 102 (thrust compression chamber) in a state where the check valve 250 of the head cover 140 due to the thrust of the piston 200 is closed to draw the incompressible fluid into the piston ( Incompressible fluid is contained in the outer chamber 101 by the volume of the piston rod 300 which is increased while being circulated and supplied to the inner chamber 102 (towing compressor chamber) on the opposite side through the check valve 250 of the 200. The forward movement is possible by shrinking and compensating the tube 500.

In addition, in the present invention, the piston 200 of the piston rod 300 due to the traction of the piston 200 compresses and flows the inner chamber 102 (towing compression chamber) in a state where the check valve 250 is closed, thereby incompressible fluid. Is supplied to the inner chamber 102 (thrust compression chamber) on the opposite side through the check valve 260 configured in the head cover 140 and at the same time, the incompressible fluid of the outer chamber 101 is the inner chamber 102 (thrust). At the same time as the circulation chamber is supplied to the compression chamber, the occupied space occupied by the piston rod 300 expands and compensates for the air tube 500 accommodated in the outer chamber 101, thereby allowing backward movement.

This operation is the head cover 140 is a movement to adjust the flow pressure of the incompressible fluid circulating in both the thrust compression chamber (TPC) and traction compression chamber (APC) and the outer chamber 101 of the inner tube 120 on one side. By configuring the load control means 600, it is possible to precisely adjust the force (movement load) of the pulling (traction) and pushing (thrust) of the piston rod 300 according to the user.

That is, as shown in FIG. 13, the oil pressure sensor 620 senses the oil pressure value of the cylinder chamber 100 and is input to the controller 630.

The input hydraulic pressure value is transmitted to the control room C / B to control the controller 630 by comparing with the exercise load value most suitable for the user.

Under the control of the controller, the lifting screw 152 is rotated (forward rotation or reverse rotation) under the control of the stepping motor 610, and the lifting nut 152 screwed to the screw rod 153 and set to prevent rotation is lifted. It operates to control the elastic force by the contraction or relaxation operation of the compression spring 154 to set the rising value of the valve tip 151, by adjusting the compression flow of the incompressible fluid through the connection passage 141 according to the user By setting the optimum exercise load, the exercise effect is maximized.

As shown in FIG. 14, the present invention may be installed in a plurality of exercise equipments to set and use an exercise load suitable for each user in a single control room (C / B).

1 is a perspective view of the present invention.

2 is a front view of the present invention.

3 is a plan view of the present invention.

Figure 4 is an exploded perspective view of main components of the present invention.

Figure 5 is a cross-sectional view of the pulled (traction) state of the piston rod of the present invention.

Figure 6 is an enlarged view of the "F" portion of Figure 5;

Figure 7 is an enlarged view of the "G" portion of Figure 5;

Figure 8 is an enlarged view of the "H" portion of Figure 5;

9 is a cross-sectional view of the pushing (thrust) state of the piston rod of the present invention.

FIG. 10 is an enlarged view of a part of the extract of FIG. 5, showing a compression flow operation of an incompressible fluid in a state in which a check valve of the head cover is opened by pulling (pulling) a piston; FIG.

FIG. 11 is an enlarged view of a part of the extract of FIG. 9, showing a compression flow operation of an incompressible fluid in a state in which a check valve of a head cover is closed due to pushing (thrust) of a piston rod; FIG.

12 is a side cross-sectional view of the present invention.

13 is a control system diagram of the present invention.

14 is an installation block diagram in accordance with an embodiment of the present invention.

DESCRIPTION OF REFERENCE NUMERALS

100: cylinder chamber 101: outer chamber

102: inner chamber 110: outer tube

120: inner tube 130: rod cover

131: road cover 140: head cover

141: connection flow path 200: piston

250, 260: check valve 300: piston rod

400: guide tube 500: air tube

600: motion load control means 610: stepping motor

620: hydraulic sensor 630: controller

Claims (3)

A cylinder chamber of a double chamber divided into an inner chamber and an outer chamber, each of which is sealed by a rod cover and a head cover on both sides of the outer tube and the inner tube to fill an incompressible fluid; A piston installed in the inner chamber to reciprocate; A piston rod which is assembled with one side of the piston and protrudes the other side to the outside in an airtight state with the rod cover; An induction pipe connecting the connection flow path between the rod cover and the head cover to circulate the incompressible fluid of the inner chamber in one direction through the rod cover and the head cover in one direction; An air tube accommodating and sealing air therein to be accommodated in the outer chamber to compensate for the volume change of the piston rod due to the reciprocating motion of the piston; Motion load control means for sensing the hydraulic value of the cylinder chamber in the head cover and controls the movement load for the user by setting the flow pressure of the incompressible fluid circulating through the cylinder chamber by electronic control; Control device for a hydraulic cylinder for exercise equipment, characterized in that consisting of. The method of claim 1, The movement load control means includes a stepping motor for setting a rising range of a valve tip for opening and closing a connection flow path communicating with the head cover and the cylinder chamber, a hydraulic sensor for sensing a hydraulic value of the cylinder chamber from the head cover, and the hydraulic pressure. The control device of the hydraulic cylinder for exercise equipment, characterized in that consisting of a controller for controlling the stepping motor by sensing a sensor. The method according to claim 1 or 2, The movement load control means is a valve tip which is assembled in the stepped hole of the multi-stage through the connection flow path of the head cover to control the compression force of the incompressible fluid circulated through the induction pipe to open and close the flow path of the connection flow path And a lifting nut assembled in an anti-rotation state, a screw rod assembled with the lifting nut and lifting and lowering the lifting nut by screw rotation, and elastically installed between the valve tip and the screw rod by the lifting nut. A compression spring that is compressed and relaxed in a vertical direction, a support knob screwed into the step hole while supporting the axial rotation of the screw rod, and the motor shaft connected to the upper portion of the screw rod while being supported by the support knob. And an assembled stepping motor, a hydraulic sensor installed in the sensing pipe line processed in communication with the connection flow path, for sensing a hydraulic value; Controller of the group of hydraulic sensors and electrically coupled to receive and input the sensed oil pressure value of hydraulic cylinders for movement mechanism, characterized in that the controller is configured to be electrically connected to the stepping motor controls the amount of rotation.

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