JP2567491Y2 - Exercise resistance device for training machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resistance device, and more particularly to a motion resistance device for a training machine which can replace a hydraulic cylinder.

[0002]

2. Description of the Related Art In general, most training machines which achieve the purpose of exercise by using a resisting force use a resistance device using a hydraulic cylinder.
As in the conventional example of hydraulic walking machine indicated by 1, mainly by pivoted the vertical column 1 on both sides pedal 2 exhibited L-shape, the both pedal 2 _1, 2 ₂ above, each hydraulic cylinder 3 , 4 and both hydraulic cylinders 3,
4 and a line 6 is connected between the two hydraulic cylinders 3,
4 ends in contact pivotally vertical posts 1 and the pedal 2 _1, 2 ₂ ends respectively, when stepping on any pedal 2 _one of which, the pedal 2 ₁ as a rotation center of the shaft pin 1a of the vertical pillar 1 ,
With its end raised, the corresponding piston rod 3a of the hydraulic cylinder 3 is pushed up and contracted (as indicated by the arrow A in FIG. 11), and the oil 5 in the hydraulic cylinder 3 is transferred to the other hydraulic line via the pipe line 6. is pressed against the cylinder 4, pushing down the other pedal 2 ₂ ends with extruded in the direction indicated the piston rod 4a of the hydraulic cylinder 4 of the said other arrow B, the effect of iteratively race walking exercise such operations I am trying to get

[0003] This kind of conventional training machine uses a hydraulic cylinder as a member for braking and resistance action. However, when actually used, the hydraulic cylinder easily causes an oil leak phenomenon, If the leakage occurs, the expected kinetic effect cannot be obtained, and the hydraulic cylinder requires a high degree of hermeticity, so that it is expensive, requires high manufacturing costs, and also increases repair costs.

[0004]

SUMMARY OF THE INVENTION In view of the above problems of the conventional exercise resistance device for a training machine, the present invention replaces a hydraulic cylinder with a simple structure, and achieves a desired exercise resistance effect from a remarkable braking force. It is an object of the present invention to provide an exercise resistance device for a training machine that can obtain the above-mentioned characteristics and is easy to manufacture and assemble without oil leakage.

[0005]

In order to achieve the above object, according to the present invention, a shaft rod is inserted into a hollow inside of which a barrel is screwed between a holding cylinder and an adjusting sleeve. A support ring is provided at one end adjacent to the adjusting sleeve, and an elastically deformable hollow friction sleeve having a plurality of grooves formed in a peripheral wall around the circumference of the support ring is attached to the holding cylinder of the shaft rod. An upper lid inserted through the shaft rod is screwed onto the upper end of the adjustment sleeve so that one end inserted therein can reciprocate, and the lower end of the upper lid abuts the upper end of the friction sleeve.

[0006] The plurality of grooves provided on the peripheral wall of the friction sleeve may be formed as radially concave ring grooves or axially long grooves, or elastic means may be provided in the holding cylinder. Then, it is more preferable.

[0007]

According to the present invention constructed as described above, one end of the holding cylinder and one end of the shaft rod are fixed to appropriate relative positions of the training machine, respectively, so that the exerciser sets a relatively large exercise resistance. At this time, when the adjusting sleeve is rotated downward, the upper lid is interlocked and the lower end of the upper lid presses the upper edge of the friction sleeve, and the lower receiving ring acts as a contact-stopping action. And the inner surface of the groove approaches inward and presses around the shaft rod, so that a friction braking force is generated between the shaft rod and the friction sleeve, and the deformation of the friction sleeve The greater the amount, the greater the braking force that is produced, and thus the desired resistance to movement can be adjusted by suitably screwing the adjusting sleeve.

The plurality of grooves provided on the peripheral wall of the friction sleeve may be formed by radially concave ring grooves or axially long grooves, or elastic means may be provided in the holding cylinder. Then, the degree of compression of the friction sleeve against the shaft rod can be controlled more reliably, and
The original position of the shaft rod that reciprocates in the holding cylinder is quickly returned.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the accompanying drawings.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the exercise resistance device for a training machine of the present invention generally comprises a holding cylinder 10, a shaft rod 2
0, a holding ring 30, a barrel 40, a friction sleeve 50, an adjusting sleeve 60, an upper cover 70, and the like; the holding cylinder 10 is formed into a hollow cylinder of an appropriate length, and has an opening at an upper end inside thereof. A storage space 11 having
At the same time, a screw portion 12 having an appropriate height is formed on the outer peripheral surface of the upper end, and a pivot member 13 is attached to a bottom end portion of the screw portion 12 so as to be pivotally connected to an appropriate portion of the training machine (not shown).

The shaft rod 20 has an elongated rod shape having a predetermined length, and a relatively large locking ring 21 is fixed to a lower end of the shaft rod 20 by a screw 211. The pivot member 2 is inserted into the space 11 and has an upper end similar to the above.
2 are provided to allow for pivoting to a suitable location on the training machine (not shown). The bearing ring 30 is formed in a short cylindrical shape having a shaft hole 31.
1 is provided with a relatively large-diameter flange 32 extending radially at the lower end of the shaft rod 20 and placed at the opening of the storage space 11 of the holding cylinder 10. 2
The locking ring 21 fixed at the lower end is restricted so as not to be separated from the storage space 11 by stopping the contact of the flange edge 32.

The barrel 40 is provided in a hollow cylindrical shape having an appropriate length, and has a threaded portion 1 of the holding cylinder 10 on an inner peripheral surface at a lower end.
2, a small-diameter ring portion 42 is provided above the female screw portion 41 so that the holding ring 30 can be stored in the small-diameter ring portion 42, and A male screw portion 43 of an appropriate length is provided on the outer peripheral surface of the upper end of the barrel 40, and a plurality of vertical grooves 44 and a scale 45 along the axial direction are formed at appropriate positions on the same outer peripheral surface.

In this embodiment, the friction sleeve 50 is formed of an elastically deformable rubber material into a cylindrical shape having a bellows-shaped outer peripheral surface of an appropriate height. The shaft rod 20 is inserted therethrough, and a bellows-shaped annular concave portion on the outer peripheral surface thereof is formed in the ring groove 52. The adjusting sleeve 60 has a hollow cylindrical shape, and has an inner peripheral surface provided with a female screw portion 61 of an appropriate length to be screwed with the male screw portion 43 on the outer peripheral surface of the barrel 40, and a slightly large portion below the female screw portion 61. In addition to forming a seat hole 62 having a diameter, a gap 63 having an appropriate depth is formed at an appropriate position at an appropriate position on the lower peripheral wall of the seat hole 62, and an elastic piece 64 is formed between the gaps 63. Then, an arc-shaped projection 641 is provided on the inner surface of the elastic piece 64.

The upper cover 70 is provided with a through hole 71 at the center thereof for the shaft rod 20 to penetrate, and a slightly smaller male screw portion 72 on the outer peripheral surface at the lower end thereof. And a flat crimping portion 73 is formed at the lower end edge thereof so that the crimping portion 73 can abut the upper end edge of the friction sleeve 50.

When assembling the exercise resistance device for a training machine according to the present invention thus formed, FIGS.
As shown in FIG. 7, first, the upper cover 70, the adjusting sleeve 60, the friction sleeve 50, the barrel 40, the bearing ring 30 and the like are inserted through the shaft rod 20, and then the locking ring 21 is screwed to the lower end of the shaft rod 20 by the screw 211. The locking ring 21
Inserted into the storage space 11 of the holding cylinder 20 from the lower end,
Next, the threaded portion 12 at the upper end of the holding cylinder 10 is screwed tightly to the female threaded portion 41 at the lower end of the barrel 40 to receive the holding ring 30 in the small-diameter ring portion 42 of the barrel 40. , The holding ring 30 and the barrel 40 are integrally connected to each other, and the movement of the locking ring 21 at the lower end of the shaft rod 20 is controlled by the contact stopping action of the flange 32 of the holding ring 30.
0, and thereafter, the female screw portion 61 of the adjusting sleeve 60 and the male screw portion 43 of the outer peripheral surface of the upper end of the barrel 40 are screwed together, and the small-diameter screw portion 72 of the upper lid 70 is screwed into the female screw portion 61 of the adjusting sleeve 60. The friction sleeve 50 is tightly screwed to the upper end to fix the friction sleeve 50 between the crimping portion 73 and the holding ring 30 to complete the assembly of the entire device (as shown in FIGS. 2 and 4).

FIG. 2 shows a non-braking state of the present invention. At this time, a resistance device is attached to a predetermined position of the exercise equipment and the exercise equipment is operated to move the shaft rod 20 to the holding cylinder 1.
0, the friction sleeve 50 is reciprocated in the axial direction.
Is not pressed, so there is no deformation. Therefore, there is a gap between the inner peripheral surface of the friction sleeve 50 and the shaft rod 20.
There is no resistance even if the 0 is reciprocated, that is, the exerciser can easily operate.

[0017] The demands on the braking force also differ due to differences in the physical strength, age, and suitable amount of exercise of the exerciser.
If you need a relatively high resistance,
When the adjusting sleeve 60 is turned to the tightening side as shown in FIG. 7, the press-fitting portion 73 is interlocked with the upper lid to press the upper edge of the friction sleeve 50, and the lower holding ring 30 acts to stop the contact. To provide the friction sleeve 50 once.
When the upper edge is pressed, the length of the friction sleeve 50 is reduced, and the inner peripheral surface of the friction sleeve 50 is pressed inward and presses around the circumference of the shaft rod 20.
A braking force due to frictional resistance is generated between the frictional sleeve 50 and the frictional sleeve 50. The greater the amount of deformation of the frictional sleeve 50, the greater the generated braking force. In this way, by swinging the adjusting sleeve 60 appropriately, Exercise resistance can be adjusted as desired.

As shown in FIG. 3, when the motion resistance, that is, the braking force is adjusted, the lower end of the adjusting sleeve 60 is fitted on the upper end of the barrel 40, and the arc of the adjusting sleeve 60 follows the rotation of the adjusting sleeve 60. The planar protrusion 641 falls instantaneously into the vertical groove 44, and while the barrel 40 and the adjustment sleeve 60 are opposed to each other, the arc-shaped protrusion 64 is formed by the action of the elastic piece 64.
1 dances and makes a rattling sound, and when the lower end of the adjusting sleeve 60 is aligned with the scale 45, the magnitude of the braking force is known. An indication mark 46 of "-" may be added to indicate whether the braking force is increasing or a phenomenon (FIGS. 1 and 4).
As shown)).

FIGS. 5 and 6 show another embodiment of the present invention. As shown in FIG.
A plurality of axially extending slots 5 leading to the insertion holes 51 'in the peripheral wall 0'
As shown in FIG. 7, when the adjusting sleeve 60 is rotated to increase the braking force, the friction sleeve 50 is pressed, and the long slot 52 ′ is formed. The peripheral portion of the middle step is bent and deformed, and the portion protruding inward presses around the circumference of the shaft rod 20 to generate a braking force, thereby obtaining the effect of adjusting the movement resistance as in the above-described embodiment.

In view of the operation modes of these embodiments, when performing the movement operation, the purpose of the movement from the reciprocating operation of the shaft rod 20 is achieved, and if the extended shaft rod 20 is If you want to return to the original position faster,
As shown in FIG. 8, an elastic member such as a tension spring 80 may be provided inside the holding cylinder 10, and the tension spring 80 is attached to the periphery of the shaft rod 20 and both ends thereof are respectively supported by the support ring 30. When the shaft rod 20 is pulled out by being brought into contact with the flange 32 and the locking ring 21 of the
0 is elastically deformed, and when the pulling force of the shaft rod 20 is removed, the tension spring 80 elastically recovers and the shaft rod 20
Movement to the original position makes it easier and more agile to perform the exercise operation.

Of course, as shown in FIG. 9, if the operation mode is opposite to the above-mentioned direction, that is, if the output of the movement operation is to contract the shaft rod 20, the contracted shaft rod 20 is quickly moved. When it is desired to return to the original position, the projecting spring 80 'may be attached to the storage space 11 such that both ends of the spring 80' abut on the bottom end surface of the locking ring 21 and the inner bottom surface of the holding cylinder 10, respectively. Can be extended and returned quickly.

[0022]

According to the present invention constructed as described above, when the exercise resistance is adjusted according to the amount of exercise desired by the exerciser, when the adjustment sleeve is rotated, the friction sleeve is prevented from rotating around the shaft rod. Since the compression force can be adjusted, the movement resistance can be adjusted as desired by appropriately screwing the adjusting sleeve. Therefore, there is an advantage that desired movement resistance can be obtained by replacing the hydraulic cylinder with a simple structure, oil leakage does not occur, and manufacture and assembly are easy.

[Brief description of the drawings]

FIG. 1 is an exploded view of an embodiment of the present invention.

FIG. 2 is a sectional view showing the completion of assembly of the embodiment.

FIG. 3 is an operation display diagram of the embodiment.

FIG. 4 is an external perspective three-dimensional view of the embodiment.

FIG. 5 is an exploded view of another embodiment of the present invention.

FIG. 6 is a sectional view showing the assembly of another embodiment.

FIG. 7 is an operation display diagram of the another embodiment.

FIG. 8 is a sectional view showing a completed assembly of yet another embodiment of the present invention.

FIG. 9 is a sectional view showing a completed assembly of yet another embodiment of the present invention.

FIG. 10 is a three-dimensional perspective view of a conventional hydraulic walking machine.

FIG. 11 is a partial sectional view showing a conventional hydraulic walking machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Holding cylinder 20 Axial rod 30 Bearing ring 40 Barrel 50 Friction sleeve 52 Ring groove 52 'Long slot hole 60 Adjusting sleeve 70 Upper lid

Claims (4)

(57) [Scope of request for utility model registration] 1. A shaft rod (20) is inserted into a hollow interior formed by screwing a barrel (40) between a holding cylinder (10) and an adjusting sleeve (60). )
An elastically deformable hollow friction sleeve (50) having a bearing ring (30) provided at one end adjacent to the adjusting sleeve (60) and having a plurality of grooves formed in a peripheral wall around the periphery of the bearing ring (30). ), And the upper lid (70) inserted through the shaft rod (20) is attached to the adjustment sleeve (60) so that one end of the shaft rod (20) inserted into the holding cylinder (10) can reciprocate. The upper end is screwed and attached to the upper end (70).
An exercise resistance device for a training machine, the lower end of which contacts the upper end of the friction sleeve (50). 2. The exercise resistance device for a training machine according to claim 1, wherein the plurality of grooves provided on the peripheral wall of the friction sleeve (50) are formed by radially concave ring grooves (52). 3. The exercise resistance device for a training machine according to claim 1, wherein the plurality of grooves provided on the peripheral wall of the friction sleeve (50) are formed by axially long slots (52 ′). 4. The exercise resistance device for a training machine according to claim 1, wherein an elastic means is provided in the holding cylinder (10).