Patent Application
20180015325
The present invention relates to a mandatory hooking/locking device for an elevating footboard of a pull-up exercise machine, more particularly to a novel invention capable of ensuring the safety of using exercise machines and equipments of the same type.
The so-called “pull-up exercise machine” refers to an exclusive exercise/fitness equipment comprising an elevating footboard provided for an exerciser to stand thereon and a gripping end or a suspension-ring end disposed above a base to simulate a horizontal bar exercise or a gymnastic ring exercise, and the elevating footboard includes an accessory lifting member such as a spring or a hydraulic cylinder for constantly providing an upward trust to assist the exerciser to perform the intended exercise easily.
Since the lifting member constantly provides the upward trust to the elevating footboard, there is no inconvenience to the exerciser at all under the normal use of the pull-up exercise machine, except at the moment when the exerciser steps on the elevating footboard or leaves the elevating footboard. Therefore, the key is to provide a design capable of situating the elevating footboard at the relative lowest position without being affected by the lifting member when no force is exerted onto the elevating footboard, so that the exerciser can step on the footboard easily. When the exerciser wants to leave the elevating footboard, the elevating footboard will not move upward unexpectedly to jeopardize the safety of use. Therefore, manufacturers of the related industry strive endlessly to pursue and meet the aforementioned safety requirement.
An object of the invention is to provide a mandatory hooking/locking device to fully comply with the basic safety requirement of the exercise machines and equipments of the same type, so as to set the design specification to intangibly eliminate the potential risk of use.
According to the invention, a mandatory hooking/locking device for an elevating footboard of a pull-up exercise machine includes a touch-pressing rod disposed at stepping positions with respect to an exerciser's two soles separately and acted by a rotary plate and a torsion spring to achieve a lifting effect to freely penetrate and slightly elevate from an end surface of the elevating footboard, and a hooking portion disposed at the bottom end of the rotary plate being provided for hooking to a corresponsive latch column of an inwardly extending section in the floor affixing front stand, so that the hooking portion of the rotary plate can be separated from the latch column only if the two touch-pressing rods are stepped and pressed down simultaneously, so that the elevating footboard performs the expected ascending and descending motions to ensure the safety of use.
The accomplishment of this and other objects of the invention will become apparent from the following description and its accompanying drawings of which:
The technical measures and characteristics of the present invention will become clearer in light of the following detailed description of an illustrative embodiment of this invention described in connection with the drawings.
With reference to
The rotary plate 40 operated in coordination with a torsion spring 50 is pivotally coupled to an inner side of a side frame 31 at the bottom of the elevating footboard 30, and a pressure bearing platform 42 is formed and bent from the middle section for touching the bottom of the touch-pressing rod 60. When the touch-pressing rod 60 is pressed down, a force is exerted onto the pressure bearing platform 42 to deflect the rotary plate 40, so as to separate the hooking portion 41 from the latch column 122 (as shown in
In other words, the elevating footboard 30 has two touch-pressing rods 60 corresponsive to the exerciser's feet respectively. When the elevating footboard 30 is situated at the lowest position and the two touch-pressing rods 60 are not pressed down, the elevating footboard 30 is normally and stably hooked to stay still at the lowest position, so as to allow the exerciser to step on the elevating footboard 30. After the exerciser's feet have stepped on the elevating footboard 30 to press the two touch-pressing rods 60, the intended pull-up exercise can be preformed. When the exerciser wants to leave the pull-up exercise machine 10, the exerciser has to descend the elevating footboard 30 to the lowest position by the gravity of his/her body weight. Now, if any one of the exerciser's feet leaves the elevating footboard 30, the touch-pressing rod 60 at the corresponsive position will be elevated accordingly, and the rotary plate 40 will be switched to a mandatory hooking/locking status, so that the elevating footboard 30 will not have any unexpected elevation or motion. Such design not just facilitates the exerciser to leave the elevating footboard 30 only, but also ensures the safety of use. Since the pull-up exercise machine 10 is a prior art, and its operating method and the operating mode of the elevating footboard 30 are well known in the art, therefore they will not be described in details.
In
Many changes and modifications in the above-described embodiments of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.
