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US20050026751A1 - Pivoting mechanism for a link rod of an elliptical exerciser - Google Patents

Pivoting mechanism for a link rod of an elliptical exerciser Download PDF

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Publication number
US20050026751A1
US20050026751A1 US10/627,700 US62770003A US2005026751A1 US 20050026751 A1 US20050026751 A1 US 20050026751A1 US 62770003 A US62770003 A US 62770003A US 2005026751 A1 US2005026751 A1 US 2005026751A1
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US
United States
Prior art keywords
rod
sliding rod
projecting collar
pivoting mechanism
sliding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/627,700
Inventor
Chiu-Hsiang Lo
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/627,700 priority Critical patent/US20050026751A1/en
Publication of US20050026751A1 publication Critical patent/US20050026751A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0002—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms
    • A63B22/001—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms by simultaneously exercising arms and legs, e.g. diagonally in anti-phase
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
    • A63B22/0664—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
    • A63B22/0664—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement
    • A63B2022/0676—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing an elliptic movement with crank and handles being on the same side of the exercising apparatus with respect to the frontal body-plane of the user, e.g. crank and handles are in front of the user
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/20—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising
    • A63B22/201—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track
    • A63B22/203—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track in a horizontal plane

Definitions

  • the present invention relates to a pivoting mechanism for a link rod of an elliptical exerciser, especially to a kind of structure that can simplify the structure, reduce the cost, is easy to maintain and stable to operate.
  • the linking structure of a conventional elliptical exerciser includes a main body 10 on which a handle rod 12 is pivotally mounted and a crank 14 .
  • a pair of handles 13 are disposed on top of the handle rod 12 while one end of the crank 14 is connected to a sliding rod 15 with pedals 16 by a pivoting mechanism.
  • the other end of the sliding rod 15 slides along the sliding base 17 positioned on the main body 10 .
  • a driving mechanism 11 arranged on the bas 10 links to a shaft 110 with one end part connected with the crank 14 .
  • sleeve 30 arranged on one end of the sliding rod 15 and a sleeve pipe 31 fitted therein.
  • Each of two ends of the sleeve 30 is a flared opening whose diameter is larger than that of the sleeve pipe 31 so as to form a clearance between the sleeve 30 and the sleeve pipe 31 .
  • the sleeve pipe 31 is disposed inside the sleeve 30 and the shim 33 positioned on two ends of the sleeve 30 .
  • the two ends of the sleeve 30 have flared openings that are difficult to manufacture and process. Moreover, such structure is easy to be damaged, thereby having high defect rate and stress concentration.
  • the present invention has a crank with one end thereof connected to a sliding rod by a pivoting mechanism.
  • the pivoting mechanism is composed of a sleeve with a bearing arranged inside. One end of the crank is inserted through the bearing.
  • a projecting collar is positioned on one side of the sleeve while a mounting hole whose inner diameter is larger than the outer diameter of the projecting collar is arranged on one end of the sliding rod. The projecting collar inserts the mounting hole on the sliding rod.
  • a pivotal rod is inserted through the sliding rod and the projecting collar so that the projecting collar can rotate with the sliding rod.
  • FIG. 1 is a perspective view of an elliptical exerciser in accordance with the present invention
  • FIG. 2 is an enlarged view of the featured structure of the present invention
  • FIG. 3 is a cross-sectional view of the featured structure of the present invention.
  • FIG. 4 is a cross-sectional view of another featured structure of the present invention.
  • FIG. 5 is a schematic drawing of an embodiment of the present invention wherein the projecting collar slightly rotates about the pivotal rod;
  • FIG. 6 is a lateral schematic view of a prior art of an elliptical exerciser.
  • FIG. 7 is an explosive schematic view of a prior art.
  • a pivoting mechanism for a link rod of an elliptical exerciser of the present invention is composed of a handle rod 12 and a crank 14 pivoted on a main body 10 .
  • the other end of the sliding rod 15 slides along the sliding base 17 positioned on the main body 10 .
  • a driving mechanism 11 arranged on the main body 10 together with a shaft 110 having one end part connected with the crank 14 , form a link system.
  • the pivoting mechanism includes a sleeve 20 with a bearing 21 disposed inside.
  • One end of the crank 14 is inserted and positioned inside the bearing 21 while a projecting collar 200 projects outwardly from one side of the sleeve 20 .
  • a mounting hole 150 whose inner diameter is larger than the outer diameter of the projecting collar 200 is disposed on one end of the sliding rod 15 .
  • the projecting collar 200 is inserted into the mounting hole 150 of the sliding rod 15 with a clearance 151 between the projecting collar 200 and the inner wall of the sliding rod 15 .
  • a pivotal rod 22 is inserted through the sliding rod 15 and the projecting collar 200 so as to allow the sleeve 20 and the projecting collar 200 to rotate with the sliding rod 15 .
  • a plurality of elastic strips 23 are positioned on the inner wall of the sliding rod 15 for cushioning and avoiding the collision when the projecting collar 200 is moved with the sliding rod 15 .
  • the mounting hole 150 of the sliding rod 15 has an elliptic cross-section.
  • the cross-section of the mounting hole 150 of the sliding rod 15 is orthogonal.
  • the two sides of the projecting collar 201 on the sleeve 20 can be designed to a curved surface 202 such that the projecting collar is slightly rotatable about the pivotal rod 22 .
  • the sleeve 20 and the projecting collar 201 can more smoothly move with the sliding rod 15 with minimized friction.
  • both of the projecting collar 200 and the sliding rod 15 can slightly rotate about pivotal rod 22 . Accordingly, less obstructive effect is created between the crank 14 and the sliding rod 15 and the stability of the sliding rod 15 on the sliding base 17 is improved.
  • the number of the components is less than traditional structure.
  • the structure is also more simplified and easy to maintain.

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  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Tools (AREA)

Abstract

The invention relates to a pivoting mechanism for a link rod of an elliptical exerciser having a handle rod and a crank. A pair of handles is arranged on top of the handle rod. A sliding rod with pedals is connected to the crank by a pivoting mechanism while the other end of the sliding rod slides along a sliding base. Moreover, a driving mechanism is linked to a shaft connected with the crank. The pivoting mechanism includes a sleeve with bearings and a projecting collar disposed on the sleeve and having a mounting hole with inner diameter larger than outer diameter of the projecting collar. One end of the crank inserts through the bearings and the projecting collar is fitted into the sliding rod. A fixing bolt is inserted through the sliding rod and the projecting collar so that the projecting collar is movable with the sliding rod.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a pivoting mechanism for a link rod of an elliptical exerciser, especially to a kind of structure that can simplify the structure, reduce the cost, is easy to maintain and stable to operate.
  • 2. Description of the Related Art
  • Referring to FIG. 6, the linking structure of a conventional elliptical exerciser includes a main body 10 on which a handle rod 12 is pivotally mounted and a crank 14. A pair of handles 13 are disposed on top of the handle rod 12 while one end of the crank 14 is connected to a sliding rod 15 with pedals 16 by a pivoting mechanism. The other end of the sliding rod 15 slides along the sliding base 17 positioned on the main body 10. A driving mechanism 11 arranged on the bas 10 links to a shaft 110 with one end part connected with the crank 14. For improving the stability of sliding, Taiwan Patent No.: 362507, as shown in FIG. 7, discloses a configuration having a sleeve 30 arranged on one end of the sliding rod 15 and a sleeve pipe 31 fitted therein. Each of two ends of the sleeve 30 is a flared opening whose diameter is larger than that of the sleeve pipe 31 so as to form a clearance between the sleeve 30 and the sleeve pipe 31.
  • Several bearings 32 are fitted inside the sleeve pipe 31 while one end of the crank 14 is movably received in the bearing 32 and fixed by a shim 33 and clasps. Due to the clearance between the sleeve 30 and the sleeve pipe 31, the sliding rod 15 has certain space to roll and the stability of the sliding rod 15 sliding on the sliding base 17 is also improved. However, such design still has following disadvantages:
  • 1. In addition to the bearing 32 and the sleeve 30, the sleeve pipe 31 is disposed inside the sleeve 30 and the shim 33 positioned on two ends of the sleeve 30. In order to form the clearance with the sleeve pipe 31, the two ends of the sleeve 30 have flared openings that are difficult to manufacture and process. Moreover, such structure is easy to be damaged, thereby having high defect rate and stress concentration.
  • 2. Due to a plurality of components, it difficult to assemble, labor-consuming and hard to maintain.
    • SUMMARY OF THE INVENTION
  • It is therefore a primary object of the present invention to provide a pivoting mechanism for a link rod of an elliptical exerciser that has simplified structure, low manufacturing cost, easy assembling, and convenient maintenance. The present invention has a crank with one end thereof connected to a sliding rod by a pivoting mechanism. The pivoting mechanism is composed of a sleeve with a bearing arranged inside. One end of the crank is inserted through the bearing. A projecting collar is positioned on one side of the sleeve while a mounting hole whose inner diameter is larger than the outer diameter of the projecting collar is arranged on one end of the sliding rod. The projecting collar inserts the mounting hole on the sliding rod. A pivotal rod is inserted through the sliding rod and the projecting collar so that the projecting collar can rotate with the sliding rod.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The accomplishment of this and other objects of the invention will become apparent from the following descriptions and its accompanying drawings of which:
  • FIG. 1 is a perspective view of an elliptical exerciser in accordance with the present invention;
  • FIG. 2 is an enlarged view of the featured structure of the present invention;
  • FIG. 3 is a cross-sectional view of the featured structure of the present invention;
  • FIG. 4 is a cross-sectional view of another featured structure of the present invention;
  • FIG. 5 is a schematic drawing of an embodiment of the present invention wherein the projecting collar slightly rotates about the pivotal rod;
  • FIG. 6 is a lateral schematic view of a prior art of an elliptical exerciser; and
  • FIG. 7 is an explosive schematic view of a prior art.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Refer to FIGS. 1 and 2, a pivoting mechanism for a link rod of an elliptical exerciser of the present invention is composed of a handle rod 12 and a crank 14 pivoted on a main body 10. A pair of handles 13 disposed on top of the handle rod 12 while one end of the crank 14 is connected to a sliding rod 15 with pedals 16 by a pivoting mechanism. The other end of the sliding rod 15 slides along the sliding base 17 positioned on the main body 10. A driving mechanism 11 arranged on the main body 10, together with a shaft 110 having one end part connected with the crank 14, form a link system.
  • The pivoting mechanism includes a sleeve 20 with a bearing 21 disposed inside. One end of the crank 14 is inserted and positioned inside the bearing 21 while a projecting collar 200 projects outwardly from one side of the sleeve 20. A mounting hole 150 whose inner diameter is larger than the outer diameter of the projecting collar 200 is disposed on one end of the sliding rod 15. Thus the projecting collar 200 is inserted into the mounting hole 150 of the sliding rod 15 with a clearance 151 between the projecting collar 200 and the inner wall of the sliding rod 15. A pivotal rod 22 is inserted through the sliding rod 15 and the projecting collar 200 so as to allow the sleeve 20 and the projecting collar 200 to rotate with the sliding rod 15.
  • Referring to FIG. 4, an embodiment of the present invention is shown. A plurality of elastic strips 23 are positioned on the inner wall of the sliding rod 15 for cushioning and avoiding the collision when the projecting collar 200 is moved with the sliding rod 15.
  • Besides, the mounting hole 150 of the sliding rod 15 has an elliptic cross-section.
  • For a further embodiment of the present invention, the cross-section of the mounting hole 150 of the sliding rod 15 is orthogonal.
  • Furthermore, referring to FIG. 5, the two sides of the projecting collar 201 on the sleeve 20 can be designed to a curved surface 202 such that the projecting collar is slightly rotatable about the pivotal rod 22. Thus, the sleeve 20 and the projecting collar 201 can more smoothly move with the sliding rod 15 with minimized friction.
  • Referring to FIGS. 2 through 4, when operated, the sliding rod 15 moves elliptically by the crank 14. Due to the clearance 151 between the projecting collar 200 of the sleeve 20 and the inner wall with the mounting hole 150 of the sliding rod 15, both of the projecting collar 200 and the sliding rod 15 can slightly rotate about pivotal rod 22. Accordingly, less obstructive effect is created between the crank 14 and the sliding rod 15 and the stability of the sliding rod 15 on the sliding base 17 is improved.
  • The present invention has the following advantages:
  • 1. In addition to the improvement of the stability of the sliding rod on the main body, it's not required to change the specification of the sleeve, the bearing and the crank of the present invention. It is only required to fit the projecting collar into the mounting hole of the sliding rod in a manner that a proper clearance therebetween is reserved. Moreover, the elliptic mounting hole of the sliding rod is easy to manufacture and process so that the cost is minimized.
  • 2. The number of the components is less than traditional structure. The structure is also more simplified and easy to maintain.
  • Many changes and modifications in the above-described embodiments of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.

Claims (7)

1. A pivoting mechanism for a link rod of an elliptical exerciser having a handle rod pivoted on a main body, a pair of handles disposed on top of the handle rod, a link rod positioned on bottom of the handle rod and movably coupled to a sliding rod with pedals, a driving mechanism mounted on the main body and linked to a shaft with one end connected with a crank, the crank being connected to one end of the sliding rod by a pivoting mechanism while the other end of the sliding rod is movable in a guiding slot on a sliding base, the pivoting mechanism comprising:
a) a sleeve mounted on the crank with bearings disposed within the sleeve;
b) a projecting collar perpendicularly extended from one side of the sleeve, wherein the sliding rod has a mounting hole with a larger inner diameter than the outer diameter of the projecting collar such that a clearance is formed between the sliding rod and the projecting collar when the projecting collar is fitted in the sliding rod; and
c) a pivotal rod for pivoting the sliding rod and the projecting collar such that the projecting collar is movable rotatable with the sliding rod.
2. The pivoting mechanism for a link rod of an elliptical exerciser as claimed in claim 1, wherein a plurality of elastic strips are positioned on the inner wall of the mounting hole of the sliding rod.
3. The pivoting mechanism for a link rod of an elliptical exerciser as claimed in claim 1, wherein the mounting hole of the sliding rod has an elliptic cross-section.
4. The pivoting mechanism for a link rod of an elliptical exerciser as claimed in claim 1, wherein the mounting hole of the sliding rod has an orthogonal cross-section.
5. The pivoting mechanism for a link rod of an elliptical exerciser as claimed in claim 1, wherein the two sides of the projecting collar have an arched cross-section, and wherein the projecting collar is slightly rotatable about the pivotal rod.
6. The pivoting mechanism for a link rod of an elliptical exerciser as claimed in claim 1, wherein the a projecting collar has a mounting hole with a larger inner diameter than the outer diameter of the sliding rod such that a clearance is formed between the sliding rod and the projecting collar when the sliding rod is fitted in the projecting collar.
7. The pivoting mechanism for a link rod of an elliptical exerciser as claimed in claim 1, wherein the pivotal rod is a bolt.
US10/627,700 2003-07-28 2003-07-28 Pivoting mechanism for a link rod of an elliptical exerciser Abandoned US20050026751A1 (en)

Priority Applications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040209740A1 (en) * 2002-10-09 2004-10-21 Jase Graber Spontaneous symmetrical weight shifting trainer device
CN102861414A (en) * 2012-09-27 2013-01-09 浙江神耀运动器材有限公司 Swing pipe switching structure of elliptical machine
US8936535B1 (en) * 2013-08-23 2015-01-20 Healthstream Taiwan Inc. Elliptical trainer
US20150080188A1 (en) * 2013-09-13 2015-03-19 Yen-Chi Chuang Oblong orbital exercising machine
US20150202488A1 (en) * 2014-01-20 2015-07-23 Dk City Corporation Elliptical Exercise Machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5762588A (en) * 1997-07-17 1998-06-09 Chen; Paul Stationary exerciser
US6149551A (en) * 1998-05-12 2000-11-21 Epix, Inc. Foldable elliptical exercise machine
US6277054B1 (en) * 2000-07-17 2001-08-21 Hai Pin Kuo Exerciser having adjustable mechanism
US6620079B2 (en) * 2000-12-19 2003-09-16 Hai Pin Kuo Exerciser having adjustable mechanism
US6672992B1 (en) * 2002-06-21 2004-01-06 Kun-Chuan Lo Exercising device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5762588A (en) * 1997-07-17 1998-06-09 Chen; Paul Stationary exerciser
US6149551A (en) * 1998-05-12 2000-11-21 Epix, Inc. Foldable elliptical exercise machine
US6277054B1 (en) * 2000-07-17 2001-08-21 Hai Pin Kuo Exerciser having adjustable mechanism
US6620079B2 (en) * 2000-12-19 2003-09-16 Hai Pin Kuo Exerciser having adjustable mechanism
US6672992B1 (en) * 2002-06-21 2004-01-06 Kun-Chuan Lo Exercising device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040209740A1 (en) * 2002-10-09 2004-10-21 Jase Graber Spontaneous symmetrical weight shifting trainer device
CN102861414A (en) * 2012-09-27 2013-01-09 浙江神耀运动器材有限公司 Swing pipe switching structure of elliptical machine
US8936535B1 (en) * 2013-08-23 2015-01-20 Healthstream Taiwan Inc. Elliptical trainer
US20150080188A1 (en) * 2013-09-13 2015-03-19 Yen-Chi Chuang Oblong orbital exercising machine
US8998775B1 (en) * 2013-09-13 2015-04-07 High Spot Health Technology Co., Ltd. Oblong orbital exercising machine
US20150202488A1 (en) * 2014-01-20 2015-07-23 Dk City Corporation Elliptical Exercise Machine
US9248338B2 (en) * 2014-01-20 2016-02-02 Dk City Corporation Elliptical exercise machine

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