CN211513309U

CN211513309U - Adjustable physical exercise stretching rod

Info

Publication number: CN211513309U
Application number: CN201822059068.3U
Authority: CN
Inventors: 孟维祺
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-10
Filing date: 2018-12-10
Publication date: 2020-09-18
Anticipated expiration: 2028-12-10

Abstract

The utility model belongs to the technical field of student's apparatus technique and specifically relates to a tensile pole of physical training with adjustable, including sleeve, pull rod and threaded rod, the pull rod is total two and pegs graft respectively in the sleeve both ends, both ends have first stopper and the equal rigid coupling of the two looks remote site to have traction spring about the sleeve in the outer rigid coupling of sleeve, and traction spring other end rigid coupling has the regulating block, the slider joint is in the spout, threaded rod both ends and two regulating block threaded connection, the rigid coupling has first bevel gear in the middle of the threaded rod, and both ends rigid coupling has the second stopper, gear shaft lower extreme rigid coupling has the second bevel gear who suits the matching with first bevel gear, and the upper end rigid coupling has the loop bar, it has the lever to peg graft in the loop bar, the pull rod has the pull handle in the outer one end. The utility model has the advantages of reasonable design, can adjust the position of two regulating blocks through rotating the lever, and then change traction spring's elasticity degree for the power that tensile the device needs when to same length changes, realizes many grades of regulations.

Description

Adjustable physical exercise stretching rod

Technical Field

The utility model belongs to the technical field of student's apparatus technique and specifically relates to a tensile pole of physical training with adjustable.

Background

Along with the comprehensive expansion of quality education, physical training becomes the important project of present student at the school, and a lot of schools all can provide sports equipment so that the student uses to improve student's health quality, and tensile pole is as a sports apparatus that the student commonly used, easy operation, and is small and exquisite convenient, can temper student's upper arm and chest strength, is suitable for the popularization. But traditional tensile pole only uses traction spring to connect, and its elasticity is unchangeable, is unsuitable for the student of different age bracket and different health quality, for solving this problem, in the chinese utility model patent that bulletin number is CN207928618U, has announced a tensile structure for sports teaching, realizes its regulation to tensile dynamics through the synergism of two springs. However, the device is provided with two springs, so that the stretching force can be adjusted only in two steps, which is not enough to meet various requirements in practical use, and further improvement is needed.

Disclosure of Invention

The utility model aims at overcoming above-mentioned technical shortcoming and providing an adjustable tensile pole of physical training, can adjust the position of two regulating blocks through rotating the lever, and then change traction spring's elasticity degree for the power that needs when tensile the device to same length changes, realizes many grades of regulations.

The utility model provides a technical scheme that technical problem adopted does: an adjustable stretching rod for physical training comprises a sleeve, two pull rods and a threaded rod, wherein the two pull rods are respectively inserted at two ends of the sleeve, the upper end and the lower end of each pull rod are fixedly connected with a first limiting block outside the sleeve, opposite ends of the two pull rods are fixedly connected with a traction spring, the other ends of the two traction springs are fixedly connected with a regulating block, sliding grooves are formed in the upper end and the lower end of the inner wall of the sleeve, sliding blocks are fixedly connected at the upper end and the lower end of each regulating block, the sliding blocks are clamped in the sliding grooves, so that the regulating blocks can only move leftwards and rightwards in the sleeve and cannot rotate, two ends of the threaded rod are in threaded connection with the two regulating blocks, the thread directions of the left side and the right side of the threaded rod are opposite, a first bevel gear is fixedly connected in the middle of the threaded rod, second limiting blocks are fixedly connected at two, the upper end rigid coupling has the loop bar, it has the lever to peg graft in the loop bar, rotates the lever for second bevel gear rotates, and then drives first bevel gear and rotates, thereby makes the threaded rod rotate, so that adjust the position of two regulating blocks, because the threaded rod left and right sides screw thread revolves to opposite, so the moving direction of two regulating blocks is relative in the sleeve, through the regulation to regulating block position, can change traction spring's elasticity degree, the power that needs when making tensile the device also will change, the pull rod has the pull handle in the outer one end rigid coupling of sleeve, so that tensile the device.

Furthermore, the pull handle is sleeved with the anti-skidding cotton pad, so that the friction force of the stretching device can be increased, and the comfort level of the device can be improved.

The utility model discloses the beneficial effect who has is: the utility model has reasonable structure design, and the positions of the two adjusting blocks can be adjusted by rotating the lever, thereby changing the tightness degree of the traction spring and changing the force required when stretching the device; after the adjustment is finished, the lever can be removed, and the threaded rod and the adjusting block are self-locked by threads so as to fix the position of the adjusting block.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention.

Figure 2 is the utility model discloses a threaded rod and regulating block's schematic structure.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 2.

As shown in figures 1-2, the utility model comprises a sleeve 1, a pull rod 2 and a threaded rod 6, wherein the pull rod 2 has two ends and is respectively inserted into two ends of the sleeve 1, the upper and lower ends of the pull rod 2 are fixedly connected with a first stopper 3 outside the sleeve and the opposite ends of the two are fixedly connected with a traction spring 4, the other ends of the two traction springs 4 are fixedly connected with an adjusting block 5, the upper and lower ends of the inner wall of the sleeve 1 are provided with chutes 1-1, the upper and lower ends of the adjusting block 5 are fixedly connected with a slide block 5-1, the slide block 5-1 is clamped in the chute 1-1, so that the adjusting block 5 can only move left and right in the sleeve 1 and can not rotate, the two ends of the threaded rod 6 are in threaded connection with the two adjusting blocks 5, the threads on the left and right sides of the threaded rod 6 have opposite directions, the middle of the threaded rod 6 is fixedly, the upper end of the middle of the sleeve 1 is connected with an I-shaped gear shaft 9-1 in an inserted mode, the lower end of the gear shaft 9-1 is fixedly connected with a second bevel gear 9 matched with the first bevel gear 7 in a matched mode, the upper end of the gear shaft is fixedly connected with a loop bar 10, a lever 11 is inserted into the loop bar 10, the lever 11 is rotated, the second bevel gear 9 is rotated, the first bevel gear 7 is driven to rotate, the threaded rod 6 is rotated, the positions of the two adjusting blocks 5 are adjusted conveniently, the moving directions of the two adjusting blocks 5 in the sleeve 1 are opposite, the tightness degree of the traction spring 4 can be changed by adjusting the positions of the adjusting blocks 5, the force required when the device is stretched is changed, and a pull handle 12 is fixedly connected to one end of the pull rod 2 outside the sleeve 1, and the device is stretched conveniently.

In this embodiment, the anti-slip cotton pad 13 is sleeved outside the pull handle 12, which not only can increase the friction force when the device is stretched, but also can improve the comfort when the device is used.

When the utility model is used, the lever 11 is rotated to adjust the positions of the two adjusting blocks 5, so as to change the tightness degree of the traction spring 4, and the force required when the device is stretched is also changed; after the adjustment is finished, the lever 11 is removed, and the threaded rod 6 and the adjusting block 5 are self-locked by threads, so that the position of the adjusting block 5 can be fixed.

Claims

1. The utility model provides a tensile pole of physical training with adjustable, includes sleeve, pull rod and threaded rod, its characterized in that: the pull rod is two in total and pegs graft in sleeve both ends respectively, both ends rigid coupling has first stopper and the equal rigid coupling of the two looks remote site outside the sleeve about the pull rod, and the equal rigid coupling of two traction spring other ends has the regulating block, both ends are equipped with the spout about the sleeve inner wall, both ends rigid coupling has the slider about the regulating block, the slider joint is in the spout, threaded rod both ends and two regulating block threaded connection, just the threaded rod left and right sides screw thread is turned to opposite, and the rigid coupling has first bevel gear in the middle of the threaded rod, and threaded rod both ends rigid coupling has the second stopper, peg graft the gear shaft that has the I-shaped in the middle of the sleeve, gear shaft lower extreme rigid coupling has the second bevel gear that suits to match with first bevel gear, and the upper end rigid coupling has the loop bar, the interpolation of loop bar has the lever, the pull rod has the.

2. The adjustable exercise stretch rod of claim 1, wherein: the pull handle is sleeved with an anti-skid cotton pad.