CN104906752B - A kind of treadmill moves buffer unit - Google Patents

Abstract

A buffer device for running a treadmill, including a hinge support, a running pedal, a spring, and a spring pressure rod. One end of the running pedal is hinged to the hinge support. The left fixed support and the right fixed support of the force, the other end of the running pedal is hinged with one end of the connecting rod, the other end of the connecting rod is hinged with one end of the spring pressure rod, and the spring pressure rod passes through the right fixed support, spring And the left fixed support, one end of the spring is fixed on the spring pressure rod, and the other end is in contact with the left fixed support; when the pedal bears the force, the force is transmitted to the spring pressure rod through the connecting rod, driving the spring The pressing rod moves to one side of the left fixed support and compresses the spring to realize the motion buffering of the running pedal. The advantage of this solution is that the gravity is converted into a horizontal force, the spring only bears the pressure, not the bending moment, and the service life of the spring is greatly improved.

Description

A treadmill motion buffer device

technical field

The invention relates to the technical field of fitness equipment, in particular to a treadmill motion buffer device.

Background technique

With the improvement of living standards, people's pursuit of health is becoming more and more urgent, and people's investment in health is also increasing. As one of the most effective fitness equipment, the treadmill has entered ordinary families and has become one of the standard equipment in the gym. Although there are many kinds and models of treadmills at present, the basic principles and structures of the mechanical parts are basically the same, except that the control functions realized by the electronic control devices are different. At present, people's demand for treadmills is no longer satisfied with the ability to run, count or diversify functions, but to pay more attention to the appearance, quality, quality and comfort of products. Therefore, in the design of the mechanical structure of the product, it should tend to be more reasonable in structure, firm in connection, durable and reliable in parts, good in ergonomics, and high in comfort, that is, the upgrading of products should meet the specific needs of people's continuous growth. adapt.

The buffer system is a key component of the treadmill. Its function is to support the runner's body weight and relieve the direct impact of the sports support on the knees and leg joints of the human body. A good buffer system can keep the human body in a correct motion posture, avoid impact and wear on the joints, and improve the comfort of motion; and the buffer system has good motion reliability, and the parts have high resistance to fatigue deformation and fracture .

The structure of the buffer system of the treadmill currently on the market is shown in Figure 1.

The advantage of this old structure is: the up and down motion of running pedal is changed into left and right motion by hinge support. The springs are placed horizontally instead of vertically, which greatly saves space and allows the running pedal to be closer to the ground, making the runner feel more like running on flat ground. But this structure also has obvious defects: the pressure on the spring does not coincide with the axis of the spring, but tilts at a certain angle. This pressure can be decomposed into a component force parallel to the axis of the spring and a component force perpendicular to the axis of the spring. The parallel component of force compresses the spring, while the perpendicular component of force causes the spring to bend. The result is a spring that is poorly cushioned and fails quickly.

Contents of the invention

The present invention mainly aims to solve the above existing problems, and provides a treadmill movement buffer device, the spring of the buffer device only bears the force in the horizontal direction, which greatly improves the service life of the spring.

In order to solve the above-mentioned existing problems, the technical solution adopted by the present invention is: a treadmill motion buffer device, comprising a hinge support, a running pedal, a spring and a spring pressure bar, one end of the running pedal is hinged to the hinge support, It also includes a connecting rod and a left fixed support and a right fixed support used to limit the spring so that it only bears horizontal force, the other end of the running pedal is hinged with one end of the connecting rod, and the other end of the connecting rod is connected with the spring pressing One end of the hinge is hinged, and the spring pressure rod passes through the right fixed support, the spring and the left fixed support in sequence, and one end of the spring is fixed on the spring pressure rod, and the other end is in contact with the left fixed support; Under the state, this active force is transmitted to the spring pressure rod through the connecting rod, drives the spring pressure rod to move to the left fixed support side and compresses the spring to realize the motion buffering of the running pedal.

The two ends of the spring are respectively connected with the left fixed support and the spring pressing rod through the buffer pad.

Several through holes are opened on the buffer pad.

The beneficial effects brought by the present invention are:

1. The present invention converts gravity into horizontal force, and the spring only bears the pressure, not the bending moment, which greatly improves the service life of the spring. The smooth transmission of force and motion increases user comfort.

2. The stressed parts have high strength, simple structure, and are easy to process, manufacture, assemble and maintain. It is an upgraded product of the treadmill motion buffer device and can create significant economic benefits for manufacturers.

Description of drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Mark among the figure: 1, hinge support, 2, running pedal, 3, left fixed support, 4, spring, 5, spring pressure bar, 6, right fixed support, 7, connecting rod.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in the figure, a treadmill motion buffer device includes a hinge support 1, a running pedal 2, a spring 4 and a spring pressing rod 5. One end of the running pedal 2 is hinged to the hinge support 1, and a connecting rod 7 is also included. And the left fixed support 3 and the right fixed support 6 in order to limit the spring so that it only bears the force in the horizontal direction, the other end of the running pedal 2 is hinged with an end of the connecting rod 7, and the other end of the connecting rod 7 is pressed with the spring. One end of the rod 5 is hinged, and the spring pressure rod 5 passes through the right fixed support 6, the spring 4 and the left fixed support 3 in sequence, and one end of the spring 4 is fixed on the spring pressure rod 5, and the other end is connected with the left fixed support 3. In contact with each other; when the running pedal bears the active force, the active force is transmitted to the spring pressing rod through the connecting rod, which drives the spring pressing bar to move to the left fixed support 3 and compresses the spring to realize the motion buffer of the running pedal 2; When leaving the running pedal, the pressure disappears, and the spring stretches, pushing the spring push rod to translate to the right. The spring pressing rod pushes the connecting rod, and the connecting rod pushes the running pedal to reset. In this way, a stroke of pressing and bouncing the running pedal is completed.

The two ends of the spring 4 are respectively connected with the left fixed support 3 and the spring pressing rod 5 through a buffer pad.

Several through holes are opened on the buffer pad.

Working principle: when a runner moves on the running pedal and presses the running pedal to move downward, the running pedal will rotate clockwise around the hinge support shaft. The running pedal drives the spring pressing bar to compress the spring through the connecting rod, so that the spring shrinks, thereby playing a buffering role. When the runner's body leaves the running pedal, the spring stretches to push the running pedal to rotate counterclockwise around the hinge making shaft, so that the running pedal is raised.

Claims (1)

1. a kind of treadmill moves buffer unit, including rocker bar bearing（1）, running pedal（2）, spring（4）And spring pressure bar （5）, the running pedal（2）One end and rocker bar bearing（1）It is be hinged, it is characterised in that：Also include connecting rod（7）And to limit Spring processed makes it be subjected only to the left hold-down support of horizontal direction power（3）With right hold-down support（6）, running pedal（2）It is inclined to set Put, its lower end and rocker bar bearing（1）It is be hinged, its upper end and connecting rod（7）One end be hinged, connecting rod（7）The other end towards run Pedal（2）Direction be obliquely installed；Connecting rod（7）The other end and spring pressure bar（5）One end be hinged, spring pressure bar（5）Successively Pass through right hold-down support（6）, spring（4）With left hold-down support（3）, spring（4）One end be installed in spring pressure bar（5） On, the other end and left hold-down support（3）It is in contact；In the state of running pedal bears active force, the active force passes through connecting rod Pass to spring pressure bar, driving spring depression bar hold-down support to the left（3）Side movement and compression spring is to realize running pedal（2） Motion buffering；

Described spring（4）Both ends pass through cushion pad and left hold-down support respectively（3）And spring pressure bar（5）Connection；

Some through holes are offered on described cushion pad；

When pressing running pedal and moving downward, running pedal rotates clockwise around rocker bar bearing axle, and running pedal passes through company Bar drives spring pressure bar compression spring, makes spring contraction, so as to play cushioning effect, when runner's body leaves running pedal When, spring elongation, promote running pedal around hinge bearing axle to rotate counterclockwise, so that running pedal rises.