Buffer structure installed in-between the framework of jogging machine and the floor surface

This invention is relating to a buffer structure to be installed in between the framework of jogging machine and the floor surface. The jogging machine is comprised of one framework, one front floor-rod, one hand holder and one rear floor-rod, etc. components. Amid the components, framework has a jogging board installed on its end surface. And one jogging track is enclosed to surface of this jogging board on its up and down end. Thus this installation can enable user to stand on jogging track and start jogging exercise. The key point here is that there is a pulling board transversely pivoted to the top end of two bent chips incorporated to rear floor-rod. And one side of the pulling board has a pivot lug to pivot an adjustment screw rod. Then let this screw rod pass through the holes drilled on the front & rear partition boards and place a buffer pad in between front and rear partition boards. Finally use one screw rod socket and one knob to bolt screw rod together. After the buffer pad is installed, it can effectively absorb the gravity that framework is carrying. It can also lessen the reaction force fed back by floor surface, and further to weaken the vibration phenomena created when framework is stressed.

BACKGROUND OF THE INVENTION 
1. Field of the invention 
This invention relates to the buffer structure of a jogging machine, more 
particularly, to an erected buffer structure between the framework and the 
floor surface can effectively absorb the gravity that framework is 
bearing. Meanwhile, it can lessen the reaction force fed back by the floor 
surface so that the vibration phenomena of framework can be weakened. 
2. Description of the Prior Art 
The so-called jogging machine is a track-type indoor sport equipment. Its 
typical assembly is to have one front floor-type upright rod and one rear 
floor-type upright rod installed at front-end base and rear-end base of 
the jogging machine framework respectively. They can set the jogging board 
slightly slanted and stick to ground (standby position before usage) when 
the framework is formally placed. At this time, user can run on the 
jogging track to enjoy the jogging exercise. Under this condition, the 
jogging board and machine framework have to carry the weight of user and 
the gravity generated by user's athletic movement while the machine is 
entertaining the user. 
Thus, for example, according to U.S. Pat. Nos. 5,441,468, 5,279,528 and 
5,454,772, etc. (as shown on FIGS. 1,2,3). There is a block-type or 
strip-type buffer pad 12 horizontally placed either at inner side frame 11 
or on upper surface of machine framework. The jogging board 14 is stably 
placed on buffer pad 12. Under this arrangement, buffer pad 12 will 
develop its effect to weaken the vibration phenomena given from the loaded 
framework 10 and jogging board 14 when jogging board is being loaded. 
Although the structure of buffer pad 12 described in the precedent of 
consuetudiary patent can accomplish certain expected effects, however, we 
still can find out variation if we conduct a closer observation. The 
buffer pad 12 will be affected by longitudinal gravity up and down when 
jogging board 14 is being loaded. The generated gravity will pass through 
buffer pad 12 and transfer its load to front and rear upright rods (not 
shown on the Figure), and finally reach the floor surface. Afterward, 
floor surface will feed back its reaction force to framework 10 and 
jogging board 14. As a result, framework 10 and jogging board 14 will 
surely create extremely large vibration phenomena because of the reaction 
force caused by floor surface. In another words, when the stress is 
demonstrating an up and down athletic state in longitudinal direction, the 
buffer pad 12 can only absorb small portion of the stress, It can not 
properly lead the stress to else place in order to lessen the influence 
occurred to machine body. 
Certainly, although it is an unavoidable fact that jogging board 14 and 
framework 10 will create vibration phenomena while being loaded, however, 
it won't puzzle the user too much. In contrast, the user will very easily 
to sense his muscle fatigue if he is affected by too much vibrating stress 
while doing the exercises. The worse case is to let user have the 
occurrence of dizzy and uncomfortable symptoms. If this uncomfortable 
symptom indeed happen, then it's really a satire on this health and 
fitness equipment, especially it's designed to improve the health. 
SUMMARY OF THE INVENTION 
This invention is to provide a buffer pad structure that can appropriately 
and transversely lead the stress in order to largely weaken the vibration 
phenomena so that stress won't cause to much impact to framework of the 
machine body and jogging board. This is the main objective of this 
invention.

DETAILED DESCRIPTION OF THE INVENTION 
First of all, please refer to FIG. 4 and FIG. 5, the body (20) of jogging 
machine is comprised of one framework (21), one front upright floor-rod 
(22), one hand holder (23) and one rear upright floor-rod (24). The 
suspension strip 25 located at an inner side of framework 21 has been 
equipped with jogging board 26. The jogging track 27 is fitted to roller 
271 and enclosed to up and down end surface of jogging board 26. This 
installation enables the user to stand on jogging track 27 and start 
jogging. 
There is a pivot chip 215 properly positioned at both sides of base end 
surface in framework 21. The rear floor-rod 24 is pivoted by pivot chip 
215, the relative positioning holes 241 & 216, and the fitting bolt 29 and 
nut 291. 
Please refer to FIG. 5 and FIG. 6, they are two better and practical 
examples of this invention. The key point is to use bolt 282 and nut 283 
to bolt two bent chip 28 of the rear floor-rod through the piercing hole 
281. There is another one pulling board 30 transversely pivoted. A pivot 
lug 31 is installed at central portion of pulling board 30 where the 
adjustment screw rod 32 can be pivoted by using bolt 311 and nut 312. Then 
let this screw rod 32 pass through the holes 213 & 214 drilled on the 
front & rear partition boards 211 & 212. Afterward, place a buffer pad 33 
and two pieces of pad 331 & 332 along the screw rod (32) and in between 
front and rear partition boards 211 & 212. Finally, use one screw rod 
socket 34, one pad piece 35 and one knob 36 to position and bolt them 
together outside the partition board 212 of the framework 21. 
When the user is standing on jogging track 27 of the framework 21 and start 
his jogging exercises, the gravity will be transferred downward to pass 
through front and rear floor-rod 22 & 24, and finally reach floor surface 
40. Because of the joint angle formed by rear floor-rod 24 and framework 
21 is in a slant status, therefore the gravity will be adequately and 
transversely led to screw rod 32. Then the buffer pad 33 assembled on 
screw rod 32 will begin its work to effectively absorb the gravity when 
framework 21 and jogging board is bearing the load. It can also lessen the 
reaction force fed back by floor surface 40. Furthermore, it can weaken 
the vibration phenomena caused by the framework 21 and jogging board 226 
when they are loaded. 
We may conclude that buffer pad 33 will effectively absorb the stress 
generated by longitudinal gravity up and down because of user's jogging 
movement and the reaction force fed back transversely to it from floor 
surface 40 through the aid of the slantly assembled rear floor-rod 24. The 
influence caused by stress and done to framework is largely weakened.