JPH0698958A - Ski training device - Google Patents

Abstract

PURPOSE:To prevent a foot from erroneously stepping between both of rails at the ski training device which impresses restoring force to a moving stand movable on a pair of rails toward the lengthwise center sides of both of the rails. CONSTITUTION:At this ski training device provided with a pair of rails 33 formed in the shape of circular arcs expanded upward, moving stand 35 movable on both of rails 33 while loading a training person and restoring force 36 impressed to the moving stand 35 toward the lengthwise center sides of both of rails 33 is provided with covers 221 and 222 equipped with an upper board 107 for closing the central part between both of rails 33 at least between both terminal part supporting frames 321 and 322 of both of rails 33 and a central supporting frame 34.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pair of end support frames,
A pair of rails that are formed in an arc shape that swells upward and that have both ends connected to the support frames,
A center support frame that supports the central part of both rails in the longitudinal direction and is placed on the floor surface, a movable table that can be moved on both rails by placing a trainee, and toward the center side in the longitudinal direction of both rails. And a restoring force generating means for giving the restoring force to the moving table.

[0002]

2. Description of the Related Art Conventionally, such a ski training device is already known, for example, from Japanese Patent Laid-Open No. 64-37970.

[0003]

SUMMARY OF THE INVENTION In the above conventional one,
Flexible elastic members such as rubber are provided between the movable table and the support frames at both ends, and when the movable table moves on a pair of rails, one of the elastic members is tensioned and the other is loosened. By this, the restoring force toward the longitudinal center of both rails is applied to the moving table, and there is a space between both rails to secure a space for allowing tension and relaxation of the elastic member. It has become a space. Therefore, it is not possible to prevent accidentally stepping between the rails, which is dangerous.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ski practice device in which safety is improved by preventing accidental stepping between the rails.

[0005]

In order to achieve the above object, according to the invention of claim 1, at least a central portion between both rails is closed between the both end supporting frames and the central supporting frame. A cover having an upper plate is provided.

According to the invention of claim 2, in addition to the structure of the invention of claim 1, the restoring force generating means is:
A flexible cable, which is made of an inelastic material and has one end connected to a movable table, first and second pulleys pivotally supported by a central support frame to guide the flexible cable from both sides, and a fixed support member. An elastic member whose one end is connected and the other end is connected to the other end of the flexible cable. The elastic member is located below the flexible cable that is pulled out from between the first and second pulleys according to the movement of the movable table. The upper plate is arranged.

According to the invention of claim 3, in addition to the structure of the invention of claim 2, the elastic member is arranged between both rails, and the cover is opened downward so that the elastic member can be accommodated. The cross section is formed in a substantially U shape.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 16 show an embodiment of the present invention. FIG. 1 is a front view showing a practice state, and FIG.
Is a front view of the ski practice device with the cover omitted,
3 is a view taken in the direction of arrow 3 in FIG. 2, FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. 1, FIG. 5 is an enlarged view of part 5 in FIG. 2 with a cover attached, and FIG. -6 line sectional view, FIG. 7 is 7-7 of FIG.
5 is a sectional view taken along the line, FIG. 8 is a view for explaining the structure and action of the restoring force generating means, FIG. 9 is a sectional view taken along the line 9-9 of FIG. 6, and FIG.
10 is a sectional view taken along line 10-10, FIG. 11 is a view for explaining the action of the interlocking means, FIG. 12 is a sectional view corresponding to FIG. 5 in a state in which the rotation of the footrest around the second axis is restricted, and FIG. Figure 1
13 is a sectional view taken along line 13-13 of FIG. 2, FIG. 14 is a side view of the cover, FIG. 15 is a view taken in the direction of arrow 15 of FIG.
It is a 6 line arrow line view.

First, referring to FIG. 1, in this ski practice apparatus, a pair of footrests 71, 7 provided on a moving base 35.
When the trainee listed in No. 1 shifts his / her weight to the left and right while using the stocks 21 and 21, for example, the moving table 3
Since 5 moves on the pair of rails 33, 33 while receiving the restoring force toward the center side in the longitudinal direction thereof, it is possible to practice by simulating the posture during ski operation. If the operator accidentally steps between the rails 33, 33 during practice, the movable table 35 may collide, which is dangerous. Therefore, allow the movable table 35 to move between the rails 33, 33. Covers 22 ₁ and 22 ₂ are provided.

In FIGS. 2 and 3, the ski training device is mounted on a floor surface 31 in parallel with each other.
And second end support frames 32 ₁ and 32 ₂ and a pair of mutually parallel rails 3 whose longitudinal ends are detachably connected to the first and second end support frames 32 ₁ and 32 ₂ , respectively.
3, 33, a central support frame 34 that is mounted on the floor surface 31 by supporting the longitudinal central portions of both rails 33, 33, a movable base 35 that is movable on both rails 33, 33, and and a longitudinal center resiliency toward the side adjustable its restoring force in conjunction with providing the moving platform 35 restoring force generating means 36 of the rail 33, the main portion of the restoring force generating means 36 cover 22 ₁ , 22 ₂ .

In FIG. 4, both rails 33, 33 are made by bending a metal pipe to form a support frame 32 at both ends.
It is formed in an arc shape that bulges upward in a plane orthogonal to ₁ and 32 ₂ . On the other hand, the first and second end support frames 32 ₁ ,
The reference numeral 32 ₂ is made of a metal pipe whose both ends are open, and both ends of the both end support frames 32 ₁ and 32 ₂ are openably and closably closed by caps 37 formed in a bowl shape.

The support cylinders 38, 38 are fixed to the _two end support frames 32 ₁ , 32 ₂ by welding at two positions with an interval corresponding to the interval between the rails 33, 33 provided therebetween. These supporting cylinders 38 and 38 is to penetrate the side wall of the opposite end portions support frame 32 _1, 32 ₂ as its inner end enters the respective end support frame 32 _1, 32 _2, the rail 3
Both longitudinal end portions of 3, 33 are fitted into the support cylinders 38, 38, respectively.

The pair of support cylinders 38 fixed to the support frames 32 ₁ and 32 ₂ at both ends have a pair of support frames 32 at both ends.
_A pair of insertion holes 39, 39 are formed along the axes of ₁ , 32 ₂ . Further, at the end portions of the rails 33 fitted into the respective support cylinders 38, ..., Outer insertion holes 40 along the axis lines of the respective end support frames 32 ₁ and 32 ₂ and on the inner side along the axis lines. Screw holes 40 'are formed so as to be coaxial with the insertion holes 39, 39 of the support cylinder 38 when the ends of the rails 33 are fitted into the support cylinder 38.

A connecting bolt 41 inserted into the insertion holes 39, 40 from the outer side of the end support frames 32 ₁ , 32 ₂ is screwed into the screw hole 40 ′, and the connecting bolt 41 is tightened. The end of the rail 33 is connected to the support cylinder 38 without rattling in the support cylinder 38.

At both ends of the support frames 32 ₁ and 32 ₂ at both ends,
Cylindrical support members 28 made of hard rubber or the like are attached by elastic engagement, respectively.
A flat support surface 28a (see FIG. 2) that is in close contact with the floor surface 31 is provided in the lower part of the. The open end of the cap 37 is fitted to the outer end of the support member 28, and the fitted state is elastically maintained.

Referring to FIGS. 5 and 6 together, the central support frame 34 has a pair of side plates 43, 43 formed in a trapezoidal shape that narrows toward the upper side, and the lower ends of the side plates 43, 43 are integrally connected by a bottom plate 44. U-shaped, both side plates 4
A reinforcing pipe 45 is installed between the intermediate portions of 3,43.
Moreover, an elastic material 46 for relaxing the load acting on the central support frame 34 from above is attached to the lower surface of the bottom plate 44, and the elastic material 46 contacts the floor surface 31.

On the other hand, slits 47, 47 are provided in the lower central portions in the longitudinal direction of both rails 33, 33, and the upper ends of the side plates 43, 43 in the central support frame 34 are rails from the slits 47, 47. The upper ends of the side plates 43, 43 are brought into contact with the upper portions of the inner surfaces of the rails 33, 33. In this state, the pair of rails 33, 33
Of the screw members 48, 48 screwed to the mutually opposing side surfaces of the
By being screwed onto the upper ends of the side plates 43, 43, the central portions of the rails 33, 33 in the longitudinal direction are supported by the central support frame 43. Moreover, the screw members 48, 4
Since the connection between the rails 33, 33 and the central support frame 34 is released by loosening the rail 8, the operation for connecting and disconnecting the rails 33, 33 and the central support frame 34 is extremely easy.

Referring also to FIG. 7, the movable table 35 is formed in a substantially U-shaped cross section with the lower part thereof being opened across both rails 33, 33 and rolling on one rail 33. A pair of wheels 50 ₁ and 50 ₁ and a pair of wheels 50 ₂ and 50 ₂ rolling on the other rail 33 are pivotally supported by the moving base 35 via roller bearings 51.

The inner ring 52 of the roller bearing 51 is screwed into the bolt 55 inserted from the inner side of the moving base 35 into the inner ring 52 and the side wall of the moving base 35 and the tip of the bolt 55 from the outer side of the moving base 35. It is fixed to the movable table 35 by the cap nut 56. Further, an outer ring 54 surrounding the inner ring 52 is inserted into the wheels 50 ₁ and 50 ₂ via a plurality of rollers 53. Moreover, a pair of retaining rings 57, 58 which can contact both ends of the outer ring 54 are fitted to the inner surface of _one wheel 50 ₁ so as to allow a slight movement of the wheel 50 ₁ along the axial direction. whereas, the other wheel 50 _{and second} inner surface, the wheel 50 ₂
A pair of retaining rings 57 and 58 that are in contact with both ends of the outer ring 54 are fitted so as to prevent movement of the outer ring 54 in the axial direction. That is, the wheels 5 rolling on both rails 33, 33, respectively.
One of the wheels 0 ₁ and 50 ₂ is pivotally supported on the moving base 35 so that the wheel 50 ₁ is allowed to move within a restricted range along the rotation axis thereof. Even if the parallelism of 33 is slightly deviated, smooth movement of the movable table 35 along both rails 33, 33 is guaranteed.

In FIG. 8, the restoring force generating means 36 is made of an inelastic material, and one end of the rope is connected to the moving base 35 as a main flexible rope 58 ₁ and the moving direction of the moving base 35 is orthogonal to the rope. A main flexible rope 58 having a horizontal axis
₁ for guiding ₁ from both sides and being pivotally supported by the central support frame 34
And the second main pulleys 59 ₁ and 60 ₁ and the first end support frame 3
_One end is connected to 2 ₁ and the other end is the main flexible rope 58 ₁
A pair of tension springs 61, 61 as elastic members connected to the other end of the main flexible rope 58 ₁ is wound closer to the tension spring 61 than the first and second main pulleys 59 ₁ , 60 ₁ . 3 main sheave 62 ₁ , a support frame 63 that rotatably supports the third main sheave 62 ₁ , and a turnbuckle that connects the second end support frame 32 ₂ and the support frame 63 with their connection distances adjustable. And 64.

Referring also to FIG. 9, a bracket 65 is fixed to the reinforcing pipe 45 of the central support frame 34,
The first and second main pulleys 59 ₁ and 60 ₁ are rotatably supported by the bracket 65. One end of the main flexible rope 58 ₁ has a grommet 66 attached to a substantially central portion of the movable table 35.
It is intended to be inserted into _1, by connecting the upper surface of the main flexible rope 58 ₁ to lock the end of the moving platform 35, the main flexible rope 58 ₁ of one end engaging the movable carriage 35, connected To be done. Thus, the inner surface and the end surface of the grommet 66 ₁ have the main flexible rope 5
It is formed smoothly so as not to damage 8 ₁ .

One ends of both tension springs 61, 61 are locked and connected to a fixed support member 67 (see FIG. 3) fixed to the longitudinal middle portion of the first end support frame 32 ₁ . The other end of the main flexible rope 58 _{1 and} the other ends of the tension springs 61, 61 are connected to the connecting member 68. Further, one end of a turnbuckle 64 is connected to a support frame 63 that pivotally supports a third main pulley 62 _{1 around} which an intermediate portion of the main flexible rope 58 ₁ is wound, and the other end of the turnbuckle 64 is a second end portion. It is locked and connected to a fixed support member 69 fixed to the middle portion of the support frame 32 _{2 in} the longitudinal direction.

In the restoring force generating means 36, in the initial state, the main flexible rope 58 ₁ is brought into a tensioned state by adjusting the length by the turnbuckle 64. Thus, FIG.
As shown in (a), the movable table 35 is mounted on both rails 33, 33.
When the upper flexible rope 58 ₁ is moved to the right, the main flexible rope 58 ₁ is wound around the right of the first and second main pulleys 59 ₁ and 60 ₁ , that is, the second main pulley 60 ₁ , and the movable table 35 is moved to both rails. The tension spring 6 is moved as it moves to the right on 33, 33.
The spring force of 1, 61 increases, and a restoring force acts on the movable table 35 toward the center side in the longitudinal direction of both rails 33, 33. Further, as shown in FIG. 8B, when the movable table 35 moves to the left on both rails 33, 33, the main flexible rope 58
₁ is in a state of being wound around the left side of the first and second main sheaves 59 ₁ and 60 ₁ , that is, the first main sheave 59 ₁ , and as the moving table 35 moves to the left side on both rails 33 and 33, a tension spring. The spring force of 61, 61 increases, and the restoring force acts on the movable table 35 in the longitudinal direction of both rails 33, 33 toward the center side. That is, since the spring force of the tension springs 61 and 61 acts on the moving table 35 as a restoring force when the moving table 35 is moved to either the left side or the right side, the restoring force from either the left side or the right side is also applied. It is always uniform and does not require uniform adjustment of restoring force.

Moreover, when adjusting the restoring force of the restoring force generating means 36, only the length adjustment by the turnbuckle 64 is necessary, and the restoring force can be easily adjusted.

By the way, the main flexible rope of the restoring force generating means 36
58₁Is broken for some reason, the moving table 35
Since the restoring force does not act, the moving table 35 moves between the rails 33, 33.
It is dangerous to be shaken in either longitudinal direction.
Therefore, the bracket 65 of the central support frame 34 has the first main
Pulley 59₁The first auxiliary pulley 59 having the same diameter as and integrated with₁Is coaxial
While being pivotally supported, the second main pulley 60₁Same diameter and one
Second vice pulley 60₂Is coaxially supported and is supported by the support frame 63.
Is the third main pulley 62₁A third auxiliary pulley 62 having the same diameter as that of the first auxiliary pulley 62
₂Is coaxially supported, and the main flexible cord 58₁In a position adjacent to
Grommet 66₂One end on the upper surface of the moving table 35
Sub flexible cable 58 for locking and connecting₂As a rope
1st and 2nd auxiliary pulley 59₂, 60₂Inserted in between. Well
Deputy flexible cable 58₂Is the third sub pulley 62₂Wrapped around
Flexible rope 58₂The other end of is connected to the connecting member 68. this
Sub flexible cable 58₂The length of the main flexible cord 58₁Less than
The main flexible rope 58₁Is nervous
When the sub-flexible rope 58 ₂Is slightly loose
Yes, the tensile load does not act under normal conditions.
It Therefore, the main flexible rope 58₁Is broken,
Flexible rope 58₂Becomes tense and restores the moving table 35.
Can be given from the rails 33, 33 of the moving base 35
Will be prevented from falling off and safety can be ensured.
it can.

At this time, the main flexible rope 58 ₁ and the sub flexible rope 5
It is desirable that 8 ₂ be color-coded to ensure mutual identification.

The first main pulley 59 ₁ and the first sub pulley 5 1
9 ₂ , the second main sheave 60 ₁ and the second sub sheave 60 ₂ , and the third main sheave 62 ₁ and the third sub sheave 62 ₂ rotate integrally, so that when they rotate relative to each other, when the adjacent sheaves rub against each other. Noise and wear, whereas the occurrence of such noise and wear is prevented.

By the way, as shown in FIGS. 6 and 9,
An elastic material 103 is attached to a lower portion of the reinforcing pipe 45. The elastic material 103 prevents both tension springs 61, 61 from directly contacting the reinforcing pipe 45 during expansion and contraction of the elastic material and generating an abnormal noise. To do. Further, the bottom plate 44 of the central support frame 34 includes the support plate 1 extending toward the first end support frame 32 ₁ side.
The base end of 04 is fixed, and in order to prevent the generation of abnormal noise by directly contacting the floor surface 31 when the tension springs 61, 61 contract on both upper and lower surfaces of the support plate 104. The elastic material 105 is attached.

Referring also to FIG. 10, a pair of foot rests 71, 71 for placing a practitioner on the moving base 35.
However, both the rotation of the practitioner on the foot rests 71, 71 about the horizontal first axis C ₁ along the front-back direction, and the movement direction of the moving base 35 and the first axis C ₁ are orthogonal to each other. is supported with rotation of the second about the axis C ₂ of as possible, both feet stand 71, 71, interlocking the pair to operate in synchronism, it is connected via the connecting mechanism 80 and 80.

A pair of support cylinders 72, 72 along the second axis C ₂ are fixed to the moving table 35 at positions spaced from each other in the longitudinal direction of both rails 33, 33. Rotational shafts 73, 73 projecting downwardly from the movable table 35 are inserted into 72 so as to be rotatable around the second axis C ₂ . Moreover, the enlarged portions 73a are provided on the upper ends of the rotating shafts 73, 73, respectively.
Thrust metals 74, 74 are interposed between 3a and the upper ends of the support cylinders 72, 72. Further, the rotating shafts 73, 73
Nuts 75 are screwed into the lower ends of the
Thrust washers 76, 76 are respectively interposed between the 5, 5 and the lower surface of the movable table 35. Therefore pivot shaft 73 and 73, the mobile base 3 the rotation of the second about the axis C ₂ as lifting while being prevented from moving along the second axis C ₂
5 will be supported.

The foot rest 71 has side plate portions 71a, 71a on both sides along the moving direction of the moving base 35, and is formed in a substantially U-shaped cross section.
2 is attached to each of the footrests 71 and 17. On the outer side of the center along the width direction of the foot rests 71, 71, the enlarged portions 73a, 73a at the upper ends of the rotary shafts 73, 73 are located.
Brackets 77, 77 sandwiching the bracket 7 are provided respectively, and the brackets 77, 77 are supported by the support shafts 78, 78 along the first axis C ₁ and the enlarged portions 7 of the rotating shafts 73, 73 are provided.
It is supported by 3a and 73a. That is, the footrests 71, 7
1 is supported on the movable table 35 so that it can rotate about the first and second axes C ₁ and C ₂ .

With this arrangement, both footrests 71, 17
When a weight is applied to any of the above, the center of weight applied to the foot rest 71 on which the weight is applied is located on the inner side of the support shaft 87, and the foot rest 71 inclines inward. Therefore, an operation of erecting the inner edge of the outer ski along the turning radius in the normal ski rotation operation can be faithfully simulated.

At the upper ends of the rotary shafts 73, 73, the first axis C
Intermediate portions of the overhanging arms 81, 81 projecting to both sides along ₁ are fixed, and support members 82 are integrally provided on the inner sides of both ends of the overhanging arms 81, 81. These supporting members 82 ... Are provided at both ends of the overhanging arms 81, 81 so as not to come into contact with the upper surface of the moving table 35 even when the footrests 71, 71 rotate about the first axes C ₁ , C _1. . Moreover, the lower portions of the rubber members 83 formed in a rectangular block shape are held by the respective support members 82.
The upper ends of the rubber members 83 ... Abut on the lower surfaces of the footrests 71, 71, respectively. Thus, both footrests 71, 71
Are linked and linked so as to operate in synchronization, and when the footrests 71, 71 rotate around the first axes C ₁ , C ₁ , two pairs of rubber materials 83, Any one of the sets 83 ... Is compressed, and the restoring force around the first axes C ₁ , C ₁ is restored by the repulsive force associated with the compression.
1,71 will be given.

Outside the support members 82 ..., Receiving members 84, which are opposed to the support members 82, are fixed on the moving table 35, and are formed in a rectangular block shape. One end of each of the rubber members 85 is held by each receiving member 84, and the other end of each rubber member 85 is supported by the supporting members 82.
Are abutted respectively. Therefore, the footrests 71, 7
When 1 rotates about the second axes C ₂ and C ₂ , one of the pair of rubber members 85 and 85 is compressed, and the repulsive force associated with the compression causes the restoring force about the second axes C ₂ and C _2. Will be given to the foot rests 71, 71.

Between the foot rests 71, 71 and the movable base 35, the foot rests 71, 71 are moved to the second axis according to the rotation of the foot rests 71, 71 about the first axes C ₁ , C _1. C ₂ , C
₂ Forced interlocking means 86, 8 forcibly rotating around ₂
6 is provided.

The compulsory interlocking means 86 includes a cam 87 which is detachably fixed to the movable table 35, and a roller 8 as a cam follower which is axially supported by the footrest 71 so as to follow the cam 87.
8 and. The cam 87 is positioned by the positioning member 90 fixed to the moving table 35 on the inner side of the rotating shaft 73 and fixed on the moving table 35 by the screw member 89, and the upper surface 87a of the cam 87 is It is formed to be inclined forward and downward toward the front side (right side in FIG. 6) of the practitioner placed on the platform 71. On the other hand, the roller 88 is pivotally supported by a bracket 91 provided on the lower surface of the foot rest 71.

According to such a forced interlocking means 86, when the footrest 71 is rotated inwardly about the first axis C ₁ , the roller 88 rolls on the upper surface 87a of the cam 87. 11, the footrest base 71 is forcibly rotated about the second axis C ₂ and the footrest base 7 is moved.
1 is inclined so that the inside of its front end is lowered. Thus, both footrests 71, which are interlocked and connected with each other,
By providing the forcible interlocking means 86, 86 between the 71 and the movable table 35, the both footrests 71, 71 are inclined synchronously, which is effective for a beginner to practice the Wedern gliding method. is there.

By the way, such forced interlocking means 86,
The forced posture change by 86 may not be necessary for the expert, and in such a case, the screw member 89
Is loosened and the cam 87 may be removed from the moving base 35.

Also, the second axis C ₂ of the footrests 71, 17
The rotation around C ₂ may be difficult for a beginner. In such a case, as shown in FIGS. 13 and 14, the cam 87 is detached from the moving base 35 and the foot is placed using the switching mechanism 92. The second axis C ₂ of the stands 71, 71,
The rotation around C ₂ should be restricted.

In this switching mechanism 92, a restricting member 93 which is detachably fixed to the movable table 35 by a screw member 94 is provided.
Four support members 8 fixed to the pair of rotating shafts 73, 73
It is welded and fixed to one of the two ...
By fixing the restricting member 93 on the moving base 35, the rotation of the support member 82 about the second axis C ₂ , that is, the rotation of the footrest 71 about the second axis C ₂ is restricted. Thus, the movable table 35 is provided with screw holes 95 (see FIG. 10) for screwing the screw members 94.

Moreover, since both footrests 71, 71 are interlocked and connected, when the rotation of one footrest 71 about the second axis C ₂ is regulated by the regulating member 93, the other footrest 71 is placed. The base 71 also does not rotate around the second axis C ₂ .

An interlocking and connecting mechanism 80 for interlocking the operations of the two footrests 71, 71 about the first axis C ₁ and the second axis C ₂ is provided with a pair of connecting members extending in the longitudinal direction of the rails 33, 33. Both ends of the rod 96 are connected to both footrests 71, 71 via universal joints 97, 97.

The universal joint 97 is composed of a first joint member 98 fixed to the end of the connecting rod 96 and a second joint member 99 locked to the first joint member 98. As for the member 99, the U-shaped member 99 is fixed to the connecting member 100 hanging from the footrest 71. Moreover, the cross-sectional shapes of the first and second joint members 98 and 99 are circular, and the first joint member 98 has an inner diameter that allows the second joint member 99 to be slidably fitted and fit in a ring shape. The second joint member 99 is formed into a ring-shaped first
It is formed in a substantially U shape so as to engage with the joint member 98.

According to the interlocking and connecting mechanism 80 using such a universal joint 97, one footrest 7
The movement around the first and second axes C ₁ and C _{2 of 1} can be transmitted to the foot rest 71 on the other side, and the foot rests 7
1, 71 can be operated in synchronization.

By the way, in the restoring force generating means 36, the main flexible rope 58 ₁ drawn out from between the first main pulley 59 ₁ and the second main pulley 60 ₁ pivotally supported by the bracket 65 of the central support frame 34, and The sub-flexible rope 58 ₂ pulled out from between the first sub-pulley 59 ₂ and the second sub-pulley 60 ₂ only travels to the left and right according to the movement of the moving base 35 to the left and right, and the main flexible line Since the ropes 58 ₁ are always in a tension state and the sub flexible ropes 58 ₂ are in a slightly loosened state, the first main pulley 59 ₁ and the second main pulley 60 of the flexible ropes 58 ₁ and 58 ₂ are kept. portion and the first sub-pulley 59 ₂ and the second auxiliary pulley 60 is also both flexible cord closes between both rails 33 and 33 at lower than the portion drawn out from between ₂ at least partly 58 ₁ drawn from between _1, 58 It does not hinder the driving of ₂ .

Therefore, between the support frames 32 ₁ and 32 _{2 at} both ends and the central support frame 34, the first main pulley 59 of the main and auxiliary flexible ropes 58 ₁ and 58 ₂ according to the movement of the movable table 35 is provided. _The cover 2 that closes the central portion between the rails 33, 33 below the portions drawn out between the _first and second main sheaves 60 _{1 and} between the first sub sheave 59 ₂ and the second sub sheave 60 ₂ , respectively.
2 ₁ , 22 ₂ are provided, and these covers 22 ₁ , 22
₂ covers the main part of the restoring force generating means 36.

Both covers 22 ₁ and 22 ₂ have basically the same structure. The structure of _one cover 22 ₁ will be described in detail below with reference to FIGS. 14 to 16.
Corresponding portions of the other cover 22 ₂ are shown with the same reference numerals.

14 to 16, the cover 22 is shown.
₁ has a substantially U-shaped cross-sectional shape that opens downward, and is formed of, for example, synthetic resin, and a pair of vertically extending side plates 106, 106 and their upper ends are integrally connected. And an upper plate 107 for controlling both side plates 106, 10
6 and the upper plate 107 are smoothly curved and connected.

This cover 22 ₁ has a central support frame 34,
Are those provided across between the ₁ first end support frame 32, the spacing between the side plates 106, 106, is set narrower than the side plates 43, 43 mutual spacing in the central support frame 34, also side plates 106, 106 are formed so as to be gradually higher toward one end side in the longitudinal direction.

Thus, at one end of the cover 22 ₁ , both side plates 106, 106 are placed on the bottom plate 44 of the central support frame 34. On the other hand, between the bottom plate 4 of the central support frame 34 and the reinforcing pipe 45, the pair of support plates 11 having a larger gap than the side plates 106, 106 therebetween.
2, 112 are provided as shown in FIG. 6, and elastic materials 113 such as rubber are attached to the surfaces of the support plates 112, 112 facing each other. Thus, the two side plates 106, 106 on one end side of the cover 22 ₁ are made of the elastic material 11
Both support plates 11 so that their outer surfaces are closely contacted with
It is fitted between 2, 112. Moreover, at one end of the cover 22 ₁ , the upper plate 107 has the first main pulley 59 ₁ and the first sub pulley 59 ₂ which are pivotally supported by the bracket 65, and the second main pulley 60 ₁ and the second sub pulley 60 ₂ Of the flexible cords 5 corresponding to the movement of the movable table 35 at a position substantially corresponding to the rotation axis of the movable plate 35.
8 ₁ , 58 ₂ can be run.

At the other end of the cover 22 ₁ , there is provided a fitting portion 108 which can be fitted from above into the middle portion of the first end support frame 32 _{1 in} the longitudinal direction. At the edge, the elastic edge member 10 that contacts the outer surface of the end support frame 32 ₁
9 is attached, and the end support frame 3 is provided on the inner surface of the fitting portion 108.
Elastic member 110 in contact with 2 ₁ of the outer surface is adhered. As a result, the cover 22 is vibrated by the vibration accompanying the movement of the movable table 35.
Generation of noise can be prevented by looseness between the _first other end and the first end support frame 32 _1.

[0053] The both side plates 1 at the first end support frame 32 ₁ nearer
The tension springs 61, 61 in the restoring force generating means 36 are provided on the inner surfaces of the side plates 1 and 61 along with the expansion and contraction action thereof.
The elastic member 111 for preventing the generation of abnormal noise by directly contacting the inner surfaces of the tension springs 61, 6
Each is attached over a stretchable range of 1.

By disposing such covers 22 ₁ and 22 ₂ between the central support frame 34 and both end support frames 32 ₁ and 32 ₂ , both flexible cords 5 in the restoring force generating means 36 are provided.
While avoiding obstacles to the running of 8 ₁ and 58 ₂ ,
The central portion between the rails 33, 33 can be covered, and it is possible to reliably prevent accidental stepping between the rails 33, 33 and improve safety. Moreover, the cover 21 ₁ is formed to have a substantially U-shaped cross section that opens downward to accommodate the tension springs 61 and 61, and the cover 21 ₁ can prevent the tension springs 61 and 61 from jumping. it can.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible to do.

[0056]

As described above, according to the first aspect of the present invention, the cover having the upper plate for closing at least the central portion between both rails is provided between the both end supporting frames and the central supporting frame. Therefore, it is possible to reliably prevent accidental stepping between the rails and improve safety.

According to the invention of claim 2, in addition to the structure of the invention of claim 1, the restoring force generating means is:
A flexible cable, which is made of an inelastic material and has one end connected to a movable table, first and second pulleys pivotally supported by a central support frame to guide the flexible cable from both sides, and a fixed support member. An elastic member whose one end is connected and the other end is connected to the other end of the flexible cable. The elastic member is located below the flexible cable that is pulled out from between the first and second pulleys according to the movement of the movable table. Since the upper plate is arranged, the elastic force of the elastic member acts as a restoring force when moving the moving table to the left or right side, and the restoring force from the left or right side is always maintained. As a result, it is possible to eliminate the need for equal adjustment of the restoring force,
The cover can be arranged so as not to hinder the movement of the movable table.

According to the invention of claim 3, in addition to the structure of the invention of claim 2, the elastic member is arranged between both rails, and the cover is opened downward so that the elastic member can be accommodated. Since the cross section is formed in a substantially U shape, the cover can prevent the elastic member from jumping.

[Brief description of drawings]

FIG. 1 is a front view showing a practice state.

FIG. 2 is a front view of the ski training device with a cover omitted.

FIG. 3 is a view on arrow 3 of FIG.

FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG.

5 is an enlarged view of part 5 in FIG. 2 with a cover attached.

6 is a sectional view taken along line 6-6 of FIG.

7 is a sectional view taken along line 7-7 of FIG.

FIG. 8 is a diagram illustrating the structure and action of the restoring force generating means.

9 is a sectional view taken along line 9-9 of FIG.

10 is a sectional view taken along line 10-10 of FIG.

FIG. 11 is a diagram for explaining the operation of the interlocking device.

12 is a cross-sectional view corresponding to FIG. 5 in a state in which the rotation of the footrest around the second axis is restricted.

13 is a sectional view taken along line 13-13 of FIG.

FIG. 14 is a side view of the cover.

FIG. 15 is a view on arrow 15 in FIG.

16 is a view taken along the line 16-16 of FIG.

[Explanation of symbols]

22 ₁ , 22 ₂ ...... Cover 31 ...... Floor surface 32 ₁ , 32 ₂ ...... End support frame 33 ...... Rail 34 ...... Center support frame 35 ...... Movable table 36 ...... Resilience generating means 58 ₁ ...... Main flexible line 58 ₂ …… Sub flexible line 59 ₁ …… First main pulley 59 ₂ …… First sub pulley 60 ₁ …… Second main pulley 60 ₂ …… Second sub pulley 61 …… As an elastic member Tension spring 67 …… Support member 107 …… Upper plate

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[Procedure amendment]

[Submission date] November 17, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

[0003]

SUMMARY OF THE INVENTION In the above conventional one,
Flexible elastic members such as rubber are provided between the movable table and the support frames at both ends, and when the movable table moves on a pair of rails, one of the elastic members is tensioned and the other is loosened. By this, the restoring force toward the longitudinal center of both rails is applied to the movable table, and an empty space for allowing tension and relaxation of the elastic member is secured between both rails. Therefore, it is not possible to prevent accidentally stepping between the rails, which is dangerous.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

The inner ring 52 of the roller bearing 51 is screwed into the bolt 55 inserted from the inner side of the moving base 35 into the inner ring 52 and the side wall of the moving base 35 and the tip of the bolt 55 from the outer side of the moving base 35. It is fixed to the movable table 35 by the cap nut 56. Further, an outer ring 54 surrounding the inner ring 52 is inserted into the wheels 50 ₁ and 50 ₂ via a plurality of rollers 53. Moreover the one wheel 50 ₁ of the inner surface, the retaining ring 57,5 7 ends to a pair of possible contact of the outer ring 54 is fitted so as to permit a slight movement along the axial direction of the wheel 50 ₁ that whereas, in the other wheel 50 _{and second} inner surface, the wheel 50 ₂
A pair of retaining ring 57,5 7 in contact with the opposite ends of the outer ring 54 is fitted so as to prevent movement along the axial direction. That is, the wheels 5 rolling on both rails 33, 33, respectively.
One of the wheels 0 ₁ and 50 ₂ is pivotally supported on the moving base 35 so that the wheel 50 ₁ is allowed to move within a restricted range along the rotation axis thereof. Even if the parallelism of 33 is slightly deviated, smooth movement of the movable table 35 along both rails 33, 33 is guaranteed.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0051

[Correction method] Change

[Correction content]

Thus, at one end of the cover 22 ₁ , both side plates 106, 106 are placed on the bottom plate 44 of the central support frame 34. On the other hand, over between the bottom plate 4 4 and the reinforcing pipes 45 of the central support frame 34, a pair of support plates spaced at large becomes interval even more the distance between the side plates 106, 106 therebetween 1
12, 112 are provided as shown in FIG. 6, and elastic materials 113 such as rubber are attached to the surfaces of the support plates 112, 112 facing each other. Thus, the two side plates 106, 106 on one end side of the cover 22 ₁ are made of the elastic material 1
Both support plates 1 so that their outer surfaces are in close contact with 13
Fitted between 12 and 112. Moreover, at one end of the cover 22 ₁ , the upper plate 107 has the first main pulley 59 ₁ and the first sub pulley 59 ₂ which are pivotally supported by the bracket 65, and the second main pulley 60 ₁ and the second sub pulley 60 ₂ Of the upper plate 107.
Both flexible cords 58 corresponding to the movement of the movable base 35 at a position above the
_1, 58 ₂ of the travel is possible.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0054

[Correction method] Change

[Correction content]

By disposing such covers 22 ₁ and 22 ₂ between the central support frame 34 and both end support frames 32 ₁ and 32 ₂ , both flexible cords 5 in the restoring force generating means 36 are provided.
While avoiding obstacles to the running of 8 ₁ and 58 ₂ ,
The central portion between the rails 33, 33 can be covered, and it is possible to reliably prevent accidental stepping between the rails 33, 33 and improve safety. Moreover the cover 2 2 _1, to accommodate a tension spring 61, which is formed in cross section substantially U-shaped open downward, pulling prevents dance spring 61 in the cover 2 2 ₁ be able to.

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

Claims (3)

[Claims] 1. A pair of end support frames (32 ₁ , 32 ₂ )
And a pair of rails (33) which are formed in an arc shape bulging upward and whose both ends are respectively connected to the both end support frames (32 ₁ , 32 ₂ ), and the center of both rails (33) in the longitudinal direction. A central support frame (34) that supports the part and is placed on the floor surface (31), and both rails (33) on which the trainee is placed.
A movable base (35) that can move up, and a restoring force toward the longitudinal center of both rails (33) is the movable base (35).
In a ski practice device including a restoring force generating means (36) for giving to at least one of the rails (33) between the both end support frames (32 ₁ , 32 ₂ ) and the center support frame (34). A cover (22) having an upper plate (107) for closing the part
₁ , 22 ₂ ) are provided, the ski practice device. 2. The restoring force generating means (36) is an inelastic material.
Flexible, which has one end connected to the movable table (35)
Search (58₁, 58₂) And the flexible cord (58 ₁, 5
8₂) Is supported on the central support frame (34) to guide
First and second pulleys (59₁, 59₂60₁，
60₂) And one end is connected to a fixed support member (67).
And the other end of the flexible cord (58₁, 58₂) The other end
And an elastic member (61) connected to the moving table (3).
5) according to the movement of the first and second pulleys (59₁, 59
₂60₁, 60₂) Flexible cable (58
₁, 58₂The upper plate (107) is arranged below
The ski training apparatus according to claim 1, wherein the ski training apparatus is provided. 3. The elastic member (61) is provided on both rails (3).
3) is disposed between the cover (22 _1), the elastic member (6
The ski practice device according to claim 2, wherein the ski practice device is formed in a substantially U-shaped cross section with an open lower part capable of accommodating 1).