US20030125171A1

US20030125171A1 - Assistance training equipment of sit-up exercise

Info

Publication number: US20030125171A1
Application number: US10/033,931
Authority: US
Inventors: Wen-Yu He
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-03
Filing date: 2002-01-03
Publication date: 2003-07-03

Abstract

An assistant training equipment mainly for helping people to do sit-ups, which comprises a connecting shaft, a supporting assembly and a holding assembly. The connecting shaft consists of a main tube and two sliding shafts slidable receive in the opposite ends of the main tube respectively. Each of the sliding shafts has an elastic bottom, which is to engage to openings on the main tube for locking the connecting shaft in a specific length. The supporting assembly is secured at one end of the connecting shaft for user to put his/her feet thereon. The holding assembling is secured at the other end of the connecting shaft for user to hold it by hands. Thus, when user do sit-ups with the assistance of the present invention, the loading of the user's back will reduce by user's hands exerting on the holding assembly.

Description

FIELD OF THE INVENTION

The present invention relates generally to a training equipment, and more particularly to an assistant training equipment of sit-up exercise.

BACKGROUND OF THE INVENTION

People pay attention to health and body building in modem life. Some people go in for physical training with a variety of exercise equipments. Sit-ups exercise is the most popular exercise for people training the abdominal muscles.

But some people have problem with doing the sit-ups exercise alone. They need someone to press his/her legs to do the Sit-up exercise. Such people may give up after do few times of sit-ups and may refuse to do the excise again. More particularly, they are in potential risk of getting musculoskeletal injury of abdomen and low back when taking sit-ups.

There were combined training machines providing assistant equipment for taking sit-ups. But the machines usually have large size and heavy weight, and more particularly they are very expensive. Although there are some types of assistant equipments of sit-up, but they still have large size for user is inconvenient to operate or to store at home.

SUMMARY OF THE INVENTION

The primary objective of the invention is to provide an assistant equipment, which provides an easy and safety way for user to do sit-ups exercise.

The second objective of the invention is to provide an assistant equipment, which has a simple structure and a lower cost.

According to the objective of the invention, an assistant training equipment comprising a connecting shaft substantially having a length of foot to tight of a general user. A supporting assembly secured at one end of the connecting shaft. The supporting assembly has two sustaining portions at the opposite side of the connecting shaft respectively for user to put his/her feet thereon, and a holding assembly secures at the other end of the connecting shaft for user to hold it by hands. Thus, user can do sit-ups with the assistance of the assistant training equipment for reducing the loading of user's back by hands exerting on the holding assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an exploded view of a first prefer embodiment of the present invention; [0008]
FIG. 2 shows a structure sketch of the prefer embodiment of the present invention; [0009]
FIGS. 3 and 4 show the assistant training equipment of the prefer embodiment of the present invention in operating respectively; [0010]
FIG. 5 shows a sectional view of an another type of the prefer embodiment of the present invention; [0011]
FIG. 6 shows the assistant training equipment of the prefer embodiment of the present invention in operating in another way; [0012]
FIG. 7 shows an exploded view of a second prefer embodiment of the present invention, and [0013]
FIG. 8 shows a sectional view of the second prefer embodiment of the present invention. [0014]

DETAIL DESCRIPTION OF THE INVENTION

As shown in FIG. 1 and FIG. 2, a first prefer embodiment of an [0015] assistant equipment 10 of sit-up exercise of present invention comprises:
A connecting [0016] shaft 20 has a main tube 21, a first sliding shaft 22 a and a second sliding shaft 22 b. The length of the main tube 21 is about 30 cm, which has openings 23 arranged in a row thereon. The first and the second sliding shaft 22 a and 22 b are tubes and are about 30 cm in length in the present embodiment. The first and the second sliding shaft 22 a and 22 b insert into the opposite ends of the main tube 21 for sliding along the axial direction of the main tube 21. Each of the first and the second sliding shaft 22 a and 22 b respectively disposes an opening 25 thereon closing to proximal ends 24 thereof. Two elastic members 26 of V-shaped pieces receive in the first and the second sliding shaft 22 a and 22 b. Each of the elastic members has an elastic bottom 27 respectively passing through the openings 25 of the first and the second sliding shaft 22 a and 22 b and one of the openings 23 of the main tube 21. Thus, the connecting shaft 20 can adjust the length thereof by shifting the first and the second sliding shaft 22 a and 22 b in the range of about 60 cm to 90 cm. It is the range of the high of feet to thigh of a general person. The length of the connecting shaft 20 is variety depended on the average height of people in specific areas. The first and the second sliding shaft 22 a and 22 b respectively have screw holes 29 at distal ends 28 thereof.
A supporting [0017] assembly 30 disposes at the distal end 28 of the first sliding shaft 22 a of the connecting shaft 20. The supporting assembly 30 comprises a tube member 31 having a through hole 32 at the midsection thereof. The tube member 31 is secured at the first sliding shaft 22 a by means of screwing a bolt 33 into the screw hole 29 of the first sliding shaft 22 a via the through hole 32 of the tube member 31. Two sustaining portions 34 are formed at the tube member 31 divided by the first sliding shaft 22 a where user can put his/her feet thereon. The tube member 31 forms two receiving spaces 35 therein divided by the first sliding shaft 22 a for receiving two springs 50 a and 50 b respectively. Two sleeves 36 detachable cover at the opposite ends of the tube member 31 for closing the openings of the receiving spaces 35.
A [0018] holding assembly 40 disposes at the distal end 28 of the second sliding shaft 22 b of the connecting shaft 20. The holding has a tube member 41, which is bent into a predetermined obtuse angle and has a through hole 42 at the bended point thereof. The tube member 41 is secured at the second sliding shaft 22 b by means of screwing a bolt 43 into the screw hole 29 of the second sliding shaft 22 b via the through hole 42 thereof. Similarly, the tube member 41 has two receiving spaces 44 therein for receiving two springs 50 c and 50 d. The four springs 50 a, 50 b, 50 c and 50 d have different coefficients of elasticity. Two sleeves 45 detachable cover at the opposite ends of the tube member 41 respectively for closing the openings of the receiving spaces 44. The sleeves 45 are also for user to hold, so they can be made of soft rubber or foam material to enhance comfort.
Please refer to FIG. 3 and FIG. 4, when operating the [0019] assistant training equipment 10 of the first prefer embodiment of the present invention, user lies down on a ground and put the assistant training equipment 10 between his/her legs with putting feet on the sustaining portions 34 of the supporting assembly 30 and with hands holding the holding assembly 40 as shown in FIG. 3. When user trying to bend truck, as shown in FIG. 4, the loading of back of user will be shared by hands exerting on the assistant training equipment 10 of the present invention. For the same reason, when user trying to lie down, the loading of back will reduce by hands exerting on the assistant training equipment 10. Whereby, a general user can do sit-ups in an easier way and can reduce the risk of getting musculoskeletal injury.
The connecting [0020] shaft 20 can adjust the length by means of pressing the bottoms 27 to make the first and the second sliding shaft 22 a and 22 b shifting along the main tube 21. When the bottoms 27 locking in another openings 23 of the main tube 21 to secure the connecting shaft 20 in a specific length to meet the specific user. However, the connecting shaft 20 can be made from a single shaft or tube to construct the assistant training equipment 10 of the present invention but without the function of changing the length.
The supporting [0021] assembly 30 and the holding assembly 30 can be disassembled by loosing the bolts 33 and 43 for facilitating the assistant training equipment 10 of the present invention to store or to carry. However, It is easy to understand that the supporting assembly 30 and the holding assembly 40 can be fixed at the opposite end of the connecting shaft 20.
The [0022] assistant training equipment 10 of the present invention has a second finction for training. Please refer to FIG. 5, we pick one of the springs 50 a, 50 b, 50 c or 50 d (which is labeled 50′ in FIG. 5) and install it in the main tube 21 of the connecting shaft 20. The second sliding shaft 22 b is turned (it also can be done by turning the first sliding shaft 22 a) for the bottom 27 of the elastic member 26 will not longer be locked by the openings 23 of the main tube 21. Thus, the second sliding shaft 22 b can slide inward or outward the main tube 21 and the spring 50′ will provide it a resistant force.
Please refer to FIG. 6, user can put the supporting [0023] assembly 30 on his/her tights and hold the holding assembly 40 by hands to push it downward. It provides a second way to train the muscles of arms and abdomen. The second training function of assistant training equipment 10 of the present invention also can be done by putting the supporting assembly 30 on the abdomen and exerting the holding assembly 40 by hands. Or put the assistant training equipment 10 between legs for tights exerting the supporting assembly 30 and the holding assembly 40 inwards to train tights' muscles. User can adjust the strength of the resistant force by replacing the springs 50 a, 50 b, 50 c or 50 d.
The [0024] assistant training equipment 10 of the present invention also can apply to the calisthenics excise or the other physical excise.
FIG. 7 and FIG. 8 show an [0025] assistant training equipment 60 of the second prefer embodiment of the present invention, which comprises a connecting shaft 70, a supporting assembly 80 and a holding assembly 90. Wherein, the connecting shaft 70 mainly consists of a main tube 71 and a sliding shaft 75. The sliding shaft 75 slidable receives in the main tube 71 and provides an elastic bottom 76 therein to engage to one of openings 72 for locking the sliding shaft 75. The structure of described-above elements is as same as the first prefer embodiment, so we will not describe the detail here. We further provide two connecting tubes 73 and 74 at the opposite ends of the connecting shaft 70, and each of them respectively has two openings 74 and 78 thereon. The supporting assembly 80 has two shafts 81 and the holding assembly 90 also has two shafts 91. The shafts 81 and 91 of the supporting assembly 80 and the holding assembly 90 insert into the opposite ends of the connecting tubes 73 and 74 of the connecting shaft 70. The shafts 81 and 91 of the supporting assembly 80 and the holding assembly 90 each has an elastic bottoms 82 and 92 (same structure as described above) therein for engaging to the openings 74 and 78 of the connecting tubes 73 and 77 of the connecting shaft 70 to lock the shafts 81 and 91. Two elastic ropes 83 and 93 respectively receive in the connecting tubes 73 and 77 and the shafts 81 and 91 of the supporting assembly 80 and the holding assembly 90 and have both end respectively securing at the shafts 81 and 91.
The [0026] assistant training equipment 60 of the second prefer embodiment of the present invention can provides the same function as the first prefer embodiment. Further, the shafts 81 and 91 of the supporting assembly 80 and the holding assembly 90 can be collapsed as shown in FIG. 8 for facilitating to store or to carry.

Claims

What is claimed is

1. An assistant training equipment comprising:

a connecting shaft substantially having a length of distance of foot to tight of a general user;

a supporting assembly provided at one end of said connecting shaft; said supporting assembly having two sustaining portions at the opposite sides of said connecting shaft for user to put feet thereon, and

a holding assembly provided at the other end of said connecting shaft for user to hold it by hands.

2. The assistant training equipment as defined in claim 1, wherein said connecting shaft can change the length.

3. The assistant training equipment as defined in claim 2, wherein said connecting shaft comprising a main tube and two sliding shafts; said main tube having openings thereon; said sliding shafts slidable receiving in the opposite ends of said main tube respectively; each of said sliding shafts having an elastic bottom thereon for engaging to said openings of said main tube to lock said sliding shafts; said supporting assembly and said holding assembly respectively securing at the distal ends of said sliding shafts.

4. The assistant training equipment as defined in claim 3, wherein said sliding shaft being a tube and having a opening thereon; a substantially V-shaped elastic member received in said sliding shaft; said elastic bottom provided at said elastic member and passing through said opening.

5. The assistant training equipment as defined in claim 3, wherein one of said sliding shafts being free sliding along said main tube by means of turning said sliding shaft to a predetermined angle for said elastic bottom thereof not engaging to said openings of said main tube; a spring receiving in said main tube with one end thereof being against on said sliding shaft for providing said sliding shaft a resistant force.

6. The assistant training equipment as defined in claim 5, wherein said supporting assembly and said holding assembly being substantially shafted elements having midsections thereof respectively securing to the opposite ends of said connecting shaft; each of said supporting assembly and said holding assembly having two receiving spaces, which are opening at the opposite ends of said supporting assembly and said holding assembly; four sleeves respectively covering at the opposite ends of said supporting assembly and said holding assembly for closing the openings of said receiving spaces; said receiving spaces can respectively receives a spring therein for user to pick one of them to install in said main tube of said connecting shaft.

7. The assistant training equipment as defined in claim 2, wherein said connecting shaft comprising a main tube and a sliding shaft; said main tube having openings thereon; said sliding shaft slidable receiving in one end of said main tube; said sliding shaft having an elastic bottom thereon for engaging to said openings of said main tube to lock said sliding shaft; said supporting assembly and said holding assembly respectively securing at the distal ends of said main tube and said sliding shaft.

8. The assistant training equipment as defined in claim 7, wherein said sliding shaft being a tube and having a opening thereon; a substantially V-shaped elastic member received in said sliding shaft; said elastic bottom provided at said elastic member and passing through said opening.

9. The assistant training equipment as defined in claim 7, wherein said sliding shaft being free sliding along said main tube by means of turning said sliding shaft to a predetermined angle for said elastic bottom thereof not engaging to said openings of said main tube; a spring receiving in said main tube with one end thereof being against on said sliding shaft for providing said sliding shaft a resistant force.

10. The assistant training equipment as defined in claim 9, wherein said supporting assembly and said holding assembly being substantially shafted elements having midsections thereof respectively securing to the opposite ends of said connecting shaft; each of said supporting assembly and said holding assembly having two receiving spaces, which are opening at the opposite ends of said supporting assembly and said holding assembly; four sleeves respectively covering at the opposite ends of said supporting assembly and said holding assembly for closing the openings of said receiving spaces; said receiving spaces can respectively receives a spring therein for user to pick one of them to install in said main tube of said connecting shaft.

11. The assistant training equipment as defined in claim 1, wherein said supporting assembly and said holding assembly being detachable secured at the opposite ends of said connecting shaft.

12. The assistant training equipment as defined in claim 11, wherein said connecting shaft having two screw holes at the opposite ends thereof respectively; said supporting assembly and said holding assembly each has a through hole for bolts passing trough and screwing into said screw holes for detachable securing said supporting assembly and said holding assembly on said connecting shaft.

13. The assistant training equipment as defined in claim 11, wherein said connecting shaft having two connecting tubes at the opposite ends thereof respective; each of said connecting tubes having two openings thereon; said supporting assembly having two shafts; said holding assembly having two shafts; said shafts of said supporting assembly and said holding assembly inserting into the opposite ends of said connecting tubes respectively; each of said shafts of said supporting assembly and said holding assembly respectively having an elastic bottom for engaging to said corresponding opening of said connecting tube.