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Pivotal Unit For Barbell

Inactive Publication Date: 2014-06-12
CHEN JIH MING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The pivotal unit in this patent is designed with fewer parts, making it easier to assemble. This improves the efficiency of the device.

Problems solved by technology

There is not proper positioning design to position the two positioning members 74 so that the assembling processes take a longer time.

Method used

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  • Pivotal Unit For Barbell
  • Pivotal Unit For Barbell
  • Pivotal Unit For Barbell

Examples

Experimental program
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Effect test

Embodiment Construction

[0021]Referring to FIGS. 1 to 3, the barbell 1 of the present invention comprises a rod 10 with proper flexibility and two grooves 11 are respectively defined in two ends of the rod 10. Two tubular members 20 are respectively mounted to the two ends of the rod 10 and the weights 12 are mounted to the tubular members 20. Each tubular member 20 has two open ends 21 and a stop 13 is connected to the end away from the distal end of the rod 10 so as to position the weights 12.

[0022]Two pivotal units 30 are respectively located in the two tubular members 20 and mounted to the two ends of the rod 10. Each pivotal unit 30 has a washer 31, a bearing 32, a sleeve 33, a positioning member 34 and an end piece 35. The rod 10 extends through the two tubular members 20 and a shoulder 22 is formed in the inner periphery of each of the two open ends 21 of the tubular member 20. The washer 31 has a recess 311 defined in one side thereof. The bearing 32 is securely connected to the inside of the tubul...

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PUM

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Abstract

A barbell includes a rod and two tubular members are respectively mounted to the two ends of the rod. Two pivotal units are respectively located in the two tubular members and mounted to the two ends of the rod. Each pivotal unit has a washer, a bearing, a sleeve and a positioning member. The washer has a recess defined in one side thereof. The bearing is securely connected to the inside of the tubular member and a first end of the bearing contacts the washer. The sleeve is located in the bearing and securely mounted to the rod, a first end of the sleeve is movably engaged with the recess of the washer. The positioning member is a U-shaped manner and engaged with a groove defined in the rod. The positioning member contacts two respective seconds of the sleeve and the bearing.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a barbell, and more particularly, to a pivotal unit for a barbell.BACKGROUND[0002]The conventional barbell is used for weight training and generally comprises a rod with two pivotal units mounted to two ends of the rod. Multiple weights are removably connected to the two pivotal units. The user grabs the center of the rod and lifts the barbell to train the muscles. The pivotal units ensure that the weights are automatically adjusted to a balance status relative to the rod so that the user does not need to rotate the rod by his / her wrists and this action can easily injure the wrists.[0003]FIGS. 7 and 8 disclose the conventional barbell and the rod 70 with proper flexibility and two pivotal units 80 are mounted to two ends of the rod 70. Each of the two ends of the rod 70 has a groove 71. A needle roller bearing 72, a first ring 73, two positioning members 74, a second ring 75, two clips 76 and an end piece 77 are mounted to...

Claims

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Application Information

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IPC IPC(8): A63B21/072
CPCA63B21/0728A63B21/0724
Inventor CHEN, JIH MING
Owner CHEN JIH MING
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