JP7158071B1 - training device resistance device - Google Patents

Abstract

A load device for a training device capable of changing the mechanical advantage of the lever of the training device and stably moving it by automated operation. A load device (10) of a training device comprises at least one lever (11), one coupler (30), one pressure cylinder (20) and one transducer (41). The lever has one pivot end 12 and one force receiving end 17, and the pivot end and the training device are connected. A coupler is disposed on the lever and can reciprocate between the pivot end and the force receiving end. Both ends of the pressure cylinder are pivotally attached to the training device and the coupler, and the ratio of the distance from the coupler to the pivoting end and the distance from the pivoting end to the force-receiving end gives the mechanical advantage of one lever of the lever. decide. The transducer has one electric motor 43 , one threaded sleeve 45 and one lead screw 46 . [Selection drawing] Fig. 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resistance device, and more particularly to a resistance device for a training device that is applied to a training device that uses a lever system as a resistance force to change the mechanical advantage of the lever through automated operation.

Training devices generally have one steering unit connected to a load device such as a weight, spring, or lever system.

A conventional training device stacks the weights described above to generate the resistance required for training. However, the weight stacking approach has limitations and the level of resistance adjustment is less than the spring and lever system, making it difficult to increase the load.

Of course, there were also problems with the spring and lever system. For example, springs were not easily adjustable in force, so the only way to change the load on the spring was to modify the lever system.

Conventional leverage systems belong to the dynamics part. The mechanics was to connect three points to form a triangle and change the length of the two sides of the force to change the load of the spring, but it was not easy to change the length of the two sides at the same time. .

For example, in the load device of Patent Literature 1, two side lengths of the force are changed. This loading device includes one lever, one pressure cylinder and one body. The lever uses one end for pivoting to a training device as a pivoting end, and a fixed pulley is arranged at the other end. The body is fitted to the lever and is reciprocally slidable between the fixed pulley and the pivot end. A pin is provided on the body and is elastically inserted into one of the rows of holes in the lever. and the body is fixed to the lever. Both ends of the pressure cylinder are pivoted to the training device and the main body respectively, so that the two pivot points of the pressure cylinder combined with the pivot point of the lever form "The Force Triangle".

In addition, using the pivot end of the lever as a fulcrum, the ratio of the distance from the fulcrum to the body and the distance from the fulcrum to the fixed pulley is related to the principle of the lever, so the lever has a mechanical advantage of the lever. Advantage: MA). The principle of lever mentioned above is that the lever receives the force applied to the point of force through the fixed pulley, the force obtained at the point of action is transmitted to the lever by the pressure cylinder, and the swing width or displacement distance of the lever with respect to the training device is Broadly refers to the mechanical advantage obtained by the ratio of the force applied at the point of effort and the force obtained at the point of action.

Pulling the pin out of the hole disengages the pin from the lever. When the body is free, it slides a certain distance on the lever, and the pin is reinserted into the other hole by elasticity, preventing the body from moving relative to the lever, and the distance from the pivot point of the lever to the body can be changed. Whether the distance is longer or shorter, the pressure cylinder moves at a constant angle and the length of the two sides of the mechanics changes, along with the mechanical advantage of the lever lever.

During the adjustment period, the user holds the lever with one hand and lifts the pin with the other hand to disengage the engagement, manipulates the body to move it relative to the lever, and then pushes the pin into the hole. When it is inserted, the engagement relationship is restored. However, the operation mode as a whole belongs to the manual control mode that relies on the user's strength, so it takes a lot of time and effort.

The body is fixed to the lever, and the three contact points that hold them together include a contact point where the pin is inserted into the hole and abuts against the lever, and two contact points where the lever hits the inside of the body. This reduces friction and requires less force, but is less stable.

Therefore, there is a need to change the mechanical advantage of the training device's leverage through automated manipulation.

U.S. Pat. No. 7,758,479

The object of the present invention is to use electrical energy and linear motion conversion structure to change the mechanical advantage of the lever of the training device through automated operation, move it stably, and improve the problems of the prior art. To provide a load device for a training apparatus capable of

In view of the current situation, the present inventors have made intensive studies, and as a result, have improved the problems of the prior art and completed the present invention. According to, attached to one training device (50 or 60), at least one lever (11), one coupler (30), one pressure cylinder (20) and one transducer ( 41), wherein said lever (11) has one pivot end (12) and one force receiving end (17), said pivot The end (12) and the training device (50 or 60) are connected, the coupler (30) is disposed on the lever (11), the pivot end (12) and the force receiving end (17). and both ends of the pressure cylinder (20) are pivotally connected to the training device (50 or 60) and the coupler (30), from the coupler (30) to the pivot end (12 ) and the distance from said pivot end (12) to said force receiving end (17) determines the mechanical advantage of one lever of said lever (11), said transducer ( 41) has one electric motor (43), one threaded sleeve (45) for maintaining threaded relationship, and one lead screw (46), said threaded sleeve (45) being said The lead screw (46) is connected to the coupler (30), and the rotary kinetic energy of the electric motor (43) causes the threaded sleeve (45) to linearly move in the longitudinal direction of the lead screw (46), thereby levering the To provide a resistance device for a training device characterized by varying the mechanical advantage of the body.

The transducer (41) has a housing (41a), in which one supporting member (41b) and one gear (41c) are disposed, and the lead screw Part of (46) is preferably maintained in a meshing relationship with said gear (41c) via said support member (41b).

One motor shaft (43a) of the electric motor (43) is preferably coupled to the gear (41c).

One connecting part (42) outside the housing (41a) is preferably pivotally connected to one fixing member (40) of the lever (11).

Said lever (11) is preferably a curved arcuate rod.

A fixed pulley (16) is preferably arranged adjacent to the force-receiving end (17) of the lever (11).

Said pressure cylinder (20) has one cylinder body (21), said cylinder body (21) having at one end one pivot hole (24) connected to said training device (50 or 60). receiving a rod (26) at the other end and extending from the cylinder body (21), the end of the rod (26) has one pivot point to which the coupler (30) is connected. (27) is preferably provided.

Said coupler (30) is connected with two plates (31) through a set of pulleys (34) and one roller (35), and said lever (11) moves between said two plates (31). Preferably, said pulley (34) and said roller (35) are provided on both sides of said lever (11).

It further comprises two arch portions (32), wherein the two arch portions (32) are integrally formed with the two plates (31), and the plates (31) are attached to the sides of the arch portions (32). It is preferably erected.

The load device of the training device of the present invention utilizes the conversion structure of electric energy and linear motion to change the mechanical advantage of the lever of the training device through automated operation and move it stably. Problems can be improved.

FIG. 1 is a perspective view showing a first example of a load device of a training device according to one embodiment of the present invention. FIG. 2 is a plan view showing a load device of a training device according to one embodiment of the present invention. FIG. 3 is a front view showing the load device of the training device according to one embodiment of the present invention. FIG. 4 is a plan view showing an exercise state of the load device of the training apparatus according to one embodiment of the present invention. FIG. 5 is a front view showing an exercise state of the load device of the training apparatus according to one embodiment of the present invention. FIG. 6 is an explanatory view of the connection relationship between the coupler and the lever of the load device of the training device according to one embodiment of the present invention. FIG. 7 is a cross-sectional view showing the inside of the transducer of the resistance device of the training device according to one embodiment of the present invention. FIG. 8 is a perspective view showing a second example of the load device of the training device according to one embodiment of the present invention. FIG. 9 is a first application example showing a state when a load device according to an embodiment of the present invention is arranged in a training device. FIG. 10 is a second application example showing a state when the load device according to one embodiment of the present invention is arranged in a training device.

An embodiment of the present invention will be described below with reference to the drawings. In addition, this invention is not limited by this.

Please refer to FIG. FIG. 1 is a perspective view showing a first example of a load device of a training device according to one embodiment of the present invention. As shown in FIG. 1, the resistance device 10 of the training apparatus according to one embodiment of the present invention comprises at least one lever 11, one pressure cylinder 20, one coupler 30 and one transducer 41. It consists of

The lever 11 is a single curved arcuate rod. The arcuate rod described above has one pivot end 12 and one force receiving end 17 . One shaft 13 is rigidly fixed to the rotating end 12 of the lever 11, and one virtual first axis 14 is formed at the center position of the shaft 13. As shown in FIG. One roller base 15 and one fixing member 40 are arranged adjacent to the force receiving end 17 of the lever 11 . One fixed pulley 16 is combined with the roller base 15 . Fixed pulley 16 receives force F from cable (57 or 65). The force F pulls the lever 11 to pivot about the first axis 14 . The fixing member 40 is a substantially L-shaped member and is fixed to the lever 11 by welding.

The transducer 41 described above includes one electric motor 43 , one threaded sleeve 45 and one lead screw 46 . The electric motor 43 is arranged outside the converter 41 and receives power from the outside via one electric wire 44 . The electric motor 43 can convert electric energy into rotational kinetic energy of one motor shaft 43a. The lead screw 46 is inserted into the threaded sleeve 45 and the two are maintained in a threaded relationship.

Please refer to FIG. FIG. 2 is a plan view showing a load device of a training device according to one embodiment of the present invention. As shown in FIG. 2, the transducer 41 described above has one housing 41a (see FIG. 7). The exterior of the housing 41a and at least one connecting portion 42 are integrally molded. The connecting portion 42 is pivotally attached to the fixing member 40 . The converter 41 is supported beside the roller base 15 and freely turns. A single pivot member 45 a couples the threaded sleeve 45 to the exterior of the coupler 30 . The coupler 30 is attached to the lever 11 and can reciprocate between the rotating end 12 and the fixed member 40 (or the force receiving end 17). As such, the coupler 30 is connected to the threaded sleeve 45 via the pivot member 45a. Confined by the pivot member 45 a , the threaded sleeve 45 pivots around the lead screw 46 and is linearly movable in the longitudinal direction of the lead screw 46 .

As shown in FIG. 7, one supporting member 41b and one gear 41c to which the motor shaft 43a is coupled are disposed inside the housing 41a. A portion of the lead screw 46 is maintained in a meshing relationship with the gear 41c via the support member 41b. The support member 41b prevents the lead screw 46 from coming off the housing 41a and prevents interference when the lead screw 46 rotates with respect to the housing 41a.

After energization, rotational kinetic energy of the motor shaft 43a is transmitted to the lead screw 46 via the gear 41c. A threaded sleeve 45 moves the coupler 30 synchronously. Thus, when motor shaft 43a is rotated clockwise or counterclockwise, threaded lead screw 46 and threaded sleeve 45 cause coupler 30 to rotate transducer 41 in the direction of arrow 45b (see FIG. 4). or move toward the pivot end 12 of the lever 11 (see FIG. 2) to control forward and backward movement by automated operation.

Please refer to FIG. 1 again. The pressure cylinder 20 of this embodiment is a pneumatic cylinder. This pneumatic cylinder is composed of a combination of one cylinder body 21 and one rod 26 . The cylinder body 21 described above has one pivot hole 24 formed at one end and receives a portion of the rod 26 at the other end. Gas is stored in the cylinder body 21 . The volume of gas changes as the rod 26 extends out of or is pulled into the cylinder body 21 and enters and exits the cylinder body 21 through the two holes 22 and 23 . A rod 26 connects the end of the cylinder body 21 and one pivot point 27 of the coupler 30 . The pivot point 27 is a single fastener (eg, rivet or bolt). The coupler 30 thus pivots the pressure cylinder 20 about an imaginary second axis 25 passing through the center of the pivot hole 24 .

In other embodiments, pressure cylinder 20 is a hydraulic cylinder (eg, a hydraulic cylinder) and is within the scope of the present invention.

As can be seen from FIG. 6, the two arches 32 and the two plates 31 of the coupler 30 are integrally molded. These plates 31 are erected on both sides of the arch portion 32 . A rod 26 , a set of pulleys 34 and a roller 35 are provided between the two plates 31 and are coupled via fasteners 33 . The rollers 35 adjoin the arch 32 and the sets of pulleys 34 adjoin the opening of the coupler 30 and on either side of the pivot point 27 of the rod 26 . Lever 11 passes between two plates 31 . Rod 26 is not in contact with lever 11 . The set of pulleys 34 and rollers 35 forms three rolling friction points on both sides of the lever 11 , thus assisting the coupler 30 to move stably in the longitudinal direction of the lever 11 .

Please refer to FIG. As shown in FIG. 3, the aforementioned shaft 13, pivot point 27 and pivot hole 24 together form a force triangle. The distance from the pivot hole 24 to the axis 13 does not change and can be considered as one long side of the force triangle. The distance L1 from the axis 13 to the pivot point 27 determines one short side of the force. Since the length of the pressure cylinder 20 defines one hypotenuse of the force, one resisting force f of the lever 11 provided by the pressure cylinder 20 corresponds to one resultant force concept.

Please refer to FIG. As shown in FIG. 5, the shorter distance L1 from the axis 13 to the pivot point 27 reduces the short side of the force and affects the hypotenuse of the force (ie the pressure cylinder 20). For example, the closer the coupler 30 is to the pivot end 12 of the lever 11, the smaller the resistance force f of the pressure cylinder 20, and the closer the coupler 30 is to the force receiving end 17, the greater the resistance force f of the pressure cylinder 20 is.

Please refer to FIGS. As shown in FIGS. 3 and 5, the lever 11 is similar to a lever mechanism and uses the shaft 13 as a fulcrum, and the distance L2 from the fulcrum to the roller platform 15 is the distance from the point of force to the fulcrum. The distance L1 from the fulcrum to the pivot point 27 can be regarded as the distance from the point of action to the fulcrum. Based on the principle of leverage, the moment at one point of force is equal to the moment at one point of action, so the static equilibrium is such that the distance from the point of action to the fulcrum multiplied by the resistance force f equals the moment at the point of force. Equally, the distance from the point of action to the fulcrum multiplied by the force F equals the moment at the point of action.

As can be seen from the force description above, the closer the coupler 30 is to the force receiving end 17 of the lever 11, the greater the resistance force f that the lever 11 is subjected to, requiring the user to apply more force in order to obtain the exercise effect. was there. On the contrary, the closer the coupler 30 is to the rotating end 12 of the lever 11, the smaller the resistance force f that the lever 11 receives, and the less force is required to be applied.

Please refer to FIG. As shown in FIG. 8, the construction of the second embodiment of the load device 10 is substantially the same as the first embodiment, except that the transducer 41 is mounted on the lever 11 and originally from a location near the roller platform 15 to the shaft. The difference is that the location adjacent to 13 has changed.

Next, when the orientation of the transducer 41 and lever 11 is changed from the rear to the front of the lever 11, the threaded sleeve 45 approaches the free end of the lead screw 46 and the coupler 30 is adjacent to the roller base 15 rather than the shaft 13. .

See FIG. FIG. 9 shows a first application example of the training device 50, and explains the arrangement of the load device 10 described above. The training device 50 has one frame 51 , one bench unit 54 and one pulley set 56 . The frame 51 is configured by combining a plurality of standing pillars 52 and a plurality of horizontal rods 53 . The shaft 13 and the cylinder body 21 are pivotally attached to the sides of the upright column 52 , and the load device 10 is supported behind the bench unit 54 and positioned in the frame 51 . A bench unit 54 is connected to the front of the frame 51 and one steering unit 55 is connected to the bottom. Besides being a first cable 57 and a plurality of wheels, the pulley set 56 is also part of the fixed pulley 16 . These wheels are pivotally connected to the frame 51 . Both ends of the first cable 57 are connected to the horizontal rod 53 (or frame 51) and the steering unit 55, respectively, and the first cable 57 is wound around the fixed pulley 16 and wheels.

During exercise, when one user sitting on the bench unit 54 pushes the T-shaped control unit 55 with both feet, it swings in the direction of arrow e. When the first cable 57 moves with arrow d, the first cable 57 between the two wheels moves together with arrow c. Since the first cable 57 is connected to and fixed to the end of the horizontal rod 53, the first cable 57 is wound around two parts of the fixed pulley 16, and is shown by arrows a and b in different directions. Two tensions are generated to pull the lever 11 and swing it toward the horizontal rod 53 , and a pressing action is generated in the pressure cylinder 20 .

In the first application, both ends of the pressure cylinder 20 are pivotally attached to the upright 52 (or the training device 50) and the coupler 30 and combined with the pivot end 12 of the lever 11 to form a force triangle. Also, the ratio of the distance from the coupler 30 to the pivot end 12 and the distance from the pivot end 12 to the force receiving end 17 determines the mechanical advantage (MA) of one lever of the lever 11. .

Please refer to FIG. FIG. 10 shows a second application example of the training device 60, and explains the arrangement of the load device 10 described above. The training device 60 has one main frame 61 , a pulley set 64 , one secondary frame 66 and one bow-shaped steering unit 67 . The main frame 61 is also composed of a combination of a plurality of standing pillars 62 and a plurality of horizontal rods 63, and the main frame 61 is erected on one supporting surface 58 (for example, the ground). The lever 11 and the cylinder body 21 are pivotally attached to the sides of the upright pillar 62 to support the first axis 14 and the second axis 25 in the main frame 61 . A secondary frame 66 is welded to the top end of the main frame 61 . The pulley set 64 mentioned above is combined with a plurality of wheels and fixed pulleys 16 via a single second cable 65 , and these wheels are pivotally connected to the main frame 61 and the secondary frame 66 . Both ends of the second cable 65 are connected to the horizontal rod 63 (or the main frame 61) and the steering unit 67, respectively, and the remaining part is wound around the fixed pulley 16 and wheels.

During exercise, the user holds both ends of the steering unit 67 with both hands and uses the steering unit 67 to move the second cable 65 downward in the direction of arrow d. The second cable 65 is wound from the secondary frame 66 to the wheel of the horizontal rod 63 in the direction of arrow c, and the remainder is divided into two parts by the fixed pulley 16, and two parts are shown by arrows a and b in different directions. When tension is generated and tension is generated in the direction of the arrow in the remaining second cable 65 and the lever 11 is pulled, it swings toward the horizontal rod 63 .

In the second application, both ends of the pressure cylinder 20 are pivotally attached to the upright 62 (or training device 60) and the coupler 30 and combined with the pivot end 12 of the lever 11 to form a force triangle. Also, the ratio of the distance from the coupler 30 to the first axis 14 and the distance from the first axis 14 to the force receiving end 17 determines the mechanical advantage (MA) of one lever of the lever 11. decide.

10 load device 11 lever 12 rotating end 13 shaft 14 first axis 15 roller stand 16 fixed pulley 17 force receiving end 20 pressure cylinder 21 cylinder body 22 hole 23 hole 24 pivot hole 25 second axis 26 rod 27 pivot Point 30 Coupler 31 Plate 32 Arch 33 Fastener 34 Pulley 35 Roller 40 Fixed member 41 Transducer 41a Housing 41b Support member 41c Gear 42 Connection 43 Electric motor 43a Motor shaft 44 Electric wire 45 Threaded sleeve 45a Pivot member 45b Arrow 46 Lead Screw 50 Training Device 51 Frame 52 Upright Column 53 Horizontal Rod 54 Bench Unit 55 Control Unit 56 Pull Set 57 First Cable 58 Support Surface 60 Training Device 61 Main Frame 62 Vertical Column 63 Horizontal Rod 64 Pull Set 65 Second Cable 66 Secondary Frame 67 Maneuvering unit a Arrow b Arrow c Arrow d Arrow e Arrow f Resistance force F Force L1 Distance L2 Distance

Claims (9)

A training device loading device for attachment to a training device and comprising at least one lever, one coupler, one pressure cylinder and one transducer, comprising:
the lever has one rotating end and one force-receiving end, and the rotating end and the training device are connected;
the coupler is disposed on the lever and can reciprocate between the rotating end and the force receiving end;
Both ends of the pressure cylinder are pivotally attached to the training device and the coupler, and the ratio of the distance from the coupler to the pivoting end to the distance from the pivoting end to the force receiving end is 1 of the lever. determine the mechanical advantage of the two levers,
The transducer has a motor, a threaded sleeve maintaining a threaded relationship, and a lead screw,
The threaded sleeve is connected with the coupler, and the lead screw linearly moves the threaded sleeve in the longitudinal direction of the lead screw by the rotational kinetic energy of the electric motor to change the mechanical advantage of the lever. A resistance device for a training device, characterized by: The transducer has a housing,
One support member and one gear are disposed inside the housing,
2. The load device of claim 1, wherein a portion of the lead screw is maintained in a meshing relationship with the gear through the support member. 3. The load device of claim 2, wherein one motor shaft of said electric motor is coupled to said gear. 3. The load device of the training apparatus according to claim 2, wherein one connection part outside the housing is pivotally connected to one fixed member of the lever. The load device of the training apparatus according to claim 1, wherein the lever is a curved arc-shaped rod. 2. The load device of a training apparatus according to claim 1, wherein a fixed pulley is disposed adjacent to said force receiving end of said lever. The pressure cylinder has one cylinder body,
The cylinder body has a pivot hole at one end connected to the training device, receives a rod at the other end, and the coupler is located at the end of the rod extending from the cylinder body. 2. A training apparatus resistance device according to claim 1, characterized in that there is provided one pivot point for connection. The coupler is connected with two plates through a set of pulleys and a roller,
2. A training device loading device according to claim 1, wherein said lever passes between said two plates and said pulleys and said rollers are provided on opposite sides of said lever. It further comprises two arch parts,
The two arch portions are integrally molded with the two plates,
9. The load device of claim 8, wherein the plate is erected on the side of the arch portion.

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