Device for controlling weight of a weight training machine and its method

• US 20050143228A1
• Filed: 11/22/2002
• Published: 06/30/2005
• Est. Priority Date: 01/28/2002
• Status: Active Grant

• Current Assignee: Byung-Don Lee
• Original Assignee: Byung-Don Lee
• Inventors: Lee, Byung-don
• Granted Patent: US 7,473,211 B2
• Time in Patent Office: Days
• US Class Current: 482/94
• CPC Class Codes: A63B 21/0628 for vertical array of weights
• CPC Class Codes: A63B 21/063 Weight selecting means

Abstract

The present invention relates to a device for controlling the weight of a weight training machine and its method which is capable of allowing a user of the weight training machine to control weight of a stack more conveniently, eliminating any inconvenience caused when a fixing pin is inserted into a hole of the stack, which is a weight unit of the conventional weight training machine, preventing the fixing pin from escaping out of the stack during the weight training by the user of the weight training machine so that any safety accident can be kept previously from occurring, allowing the user to control minutely weight for the weight training, being programmable by means of remote electrical control so as to bring about a motive for exercise, and eliminating any restriction of design, which is common in the prior art because of the fixing pin.

Claims

1. A device for controlling weight of a weight training machine, said weight training machine comprising a plurality of stacks attached slidably upward or downward to a pair of guides mounted between a support stand, which is attached to a base, a plate mounted slidably to said guides in such a manner that it is placed at the upper part of the stack, and a fixing bar with a plurality of holes formed therein, said fixing bar being mounted to the lower part of said plate, wherein each of said stacks is formed in the shape of a brick with a depressed side, at the side of the depressed part of said stack is formed an insert hole, at one end of said plate is formed guides, said guides being placed in the depressed part of the stack, said guide is provided at the one side thereof with a plurality of stop grooves along its longitudinal direction, and to said guide is mounted a fixing unit, said fixing unit comprising a body having a receiving chamber passing through laterally at the center thereof;

a spring mounted in said receiving chamber of said body;

a fixing pin supported by means of said spring and having a handle provided at one end thereof; and

a positioning structure comprising a ball inserted into a hole formed on the side of said body (11), another spring mounted to one side of said ball, and a mood bolt for preventing disengagement of said another spring.

2. The device for controlling weight of the weight training machine as claimed in claim 1, wherein said device for controlling weight includes a control unit comprising a body with a guide hole of slot shape formed at the front thereof and a plurality of stop grooves formed at the both sides of said guide hole;

a slider having a through hole formed at the central part thereof, into which an actuating bar with a handle attached to one end thereof is inserted; and

a positioning structure attached to one end of said slider, said positioning structure comprising a ball, a spring for urging said ball into said stop groove, and a mood bolt, and wherein said control unit is connected to said fixing unit by means of wires for actuating said fixing unit upward or downward.

3. (canceled)

4. A device for controlling weight of a weight training machine, said weight training machine comprising a plurality of stacks attached slidably upward or downward to a pair of guides mounted between a support stand, which is attached to a base, and a plate mounted slidably to said guides in such a manner that it is placed at the upper part of the stack, wherein each of said stacks is formed in the shape of a brick with a depressed side, at the side of the depressed part of said stack is formed an insert hole, and to one side of said plate is attached a fixing unit, said fixing unit comprising a fixing unit body of hollow rectangular shape;

a latching member having a plurality of hooks formed inside said fixing unit body in the longitudinal direction;

a spring arranged at the lower part of said latching member;

a plurality of fixing pins going through said fixing unit body and having a button formed at one end thereof; and

a spring arranged between the said button and the outside of said fixing unit body, said fixing unit being placed in the depressed part of said stack.

5. The device for controlling weight of the weight training machine as claimed in claim 4, wherein said fixing pin is provided at the both sides thereof with guide projections in its longitudinal direction, a latching projection is formed in the direction of one side thereof, to the end of said guide projection is formed a latching step, and wherein at the side of said fixing unit body is formed a guide groove corresponding to said guide projection formed along the lateral longitudinal direction of the fixing pin and a groove corresponding to said latching projection.

6. The device for controlling weight of the weight training machine as claimed in claim 4, wherein to one side of said fixing pin 130 of said fixing unit is attached a general solenoid, and wherein the end of said fixing pin and a plunger of said solenoid are connected with each other.

7. The device for controlling weight of the weight training machine as claimed in claim 4, wherein to one side of said fixing unit body of said fixing unit is attached a plurality of pulleys, a wire is connected to one side of said button by means of a connecting member, and wherein said wire is connected to a control unit for actuating the fixing unit, said control unit comprising going through said body and having a handle attached to one end thereof, the other end of said actuating bar being bent at a right angle and connected with said wire;

a plurality of pulleys attached to the rear part of said body of said control unit; and

a supporting stand.

20. The device for controlling weight of the weight training machine as claimed in claim 4, wherein said stack is provided at the bottom surface under the center of gravity thereof with an insert hole of rectangular shape.

21. The device for controlling weight of the weight training machine as claimed in claim 4, further comprising a fixing plate, said fixing plate being formed with a sheet body of the same shape as said insert hole.

23. The device for controlling weight of the weight training machine as claimed in claim 4, wherein said fixing pins are formed with the same shape as said insert hole.

8-10. -10. (canceled)

11. A device for controlling weight of a weight training machine, said weight training machine including a plurality of stacks, each of which is formed in the shape of a brick with a depressed side, an insert hole formed in each of the stacks, a fixing unit of rectangular shape attached to the front part of the stacks, and a fixing plate provided in said fixing unit, said fixing plate being inserted selectively into said insert hole for an exerciser to lift up stacks of the desired weight, wherein stacks each having an insert hole of rectangular shape at the bottom surface under the center of gravity thereof are provided, a fixing plate is provided, said fixing plate having a stationary part formed of the same sheet shape as said insert hole, rectangular grooves being formed at the both sides of the rear part thereof;

an actuating part with a sloping portion formed at the both ends of the rear part thereof, guides, by which a disengagement preventing plate inserted into a groove appears or disappears, are attached to side plate of a fixing unit, at the front of said disengagement preventing plate facing said groove is formed a sloping portion opposite to the sloping portion of an actuating part, a spring is arranged at the opposite side thereof in a disengagement preventing unit, thereby said disengagement preventing plate being latched to said actuating part of the fixing unit to prevent said fixing plate from escaping out of said insert hole when said fixing plate is inserted into said insert hole of said stack.

12. The device for controlling weight of the weight training machine as claimed in claim 11, wherein a stopper is formed projected at the opposite side of said sloping portion of said disengagement preventing plate, and a stopper rail 4601 is formed at the inner side of said guide so that the actuating distance of said disengagement preventing plate is limited.

18. The device for controlling weight of the weight training machine as claimed in claim 11, wherein said stack is provided at the bottom surface under the center of gravity thereof with an insert hole of rectangular shape.

19. The device for controlling weight of the weight training machine as claimed in claim 11, wherein said fixing plate is formed with a sheet body of the same shape as said insert hole.

22. The device for controlling weight of the weight training machine as claimed in claim 18, wherein said fixing plate is formed with a sheet body of the same shape as said insert hole.

24. The device for controlling weight of the weight training machine as claimed in claim 11, further comprising a plurality of fixing pins, said fixing pins being formed with the same shape as said insert hole.

25. The device for controlling weight of the weight training machine as claimed in claim 18, further comprising a plurality of fixing pins, said fixing pins being formed with the same shape as said insert hole.

13-17. -17. (canceled)