Golf bag cart foldable device

A foldable device of golf bag cart comprises: an upper cart stand, a bottom cart stand and a linkage set. The upper cart stand, having an adapter that is provided with a slider on its top, is provided with a slider mount at each of the two distant ends above and below the slider. The bottom cart stand is in pinned connection with the adapter at its top. The linkage set, made up of a plurality of linkages, forms links between the slider and the bottom cart stand, between the adapter and the rear wheel frame and between the bottom cart stand and the front wheel frame. By means of the setup of such links, the simultaneous unfolding or folding of the upper cart stand, the bottom cart stand, the front wheel and the rear wheels can thus be accomplished, which facilitates the handiness in use.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a golf bag cart foldable device and more particularly to one that features a simultaneous unfolding or folding for an upper cart stand, a bottom cart stand, a front wheel and rear wheels to facilitate the handiness in use.

2. Description of the Prior Art

The foldable devices of prior golf bag carts have a common structure as inFIG. 10, where an upper cart stand7(that is, the handle bar) and a rear wheel frame71are joined together by a strut bar72in between. Once the upper cart stand7is being pulled, the two rear wheels73are certainly linked to shift inward; however, the folding of the front wheel74and of the rear wheel73are independent to each other, which are unable to be folded simultaneously. And that means a user has to squat down to operate the front wheel folding joint75and to pull the front wheel74for a frontward (or backward) folding, for the completion of the folding of the bag cart. Reversely, the unfolding of the cart for the use still demands a user to squat down to operate the front wheel74too, which is substantially inconvenient, especially for the situations that the front wheel74and the rear wheels73are stuck with dirt, weeds or/and mud as the cart has moved in the golf course. And the folding of the front wheel at this moment would no doubt smudge the hands and the dress, which is awful and awkward to operate.

In light of the aforesaid shortcomings, the applicant of this invention pushed the inventor laboriously ahead with the improvement, and eventually the longtime endeavors gave birth to this invention.

SUMMARY OF THE INVENTION

The objective of this invention is to provide a golf bag cart foldable device, which features a simultaneous unfolding or folding for a upper cart stand, a bottom cart stand, a front wheel and rear wheels, to achieve particular handiness in use.

To achieve the aforementioned objective, this invention comprises: an upper cart stand, having an adapter at its bottom, where the adapter is provided with a slider on its top, which is available to slide along the upper cart stand. The upper cart stand is provided with a slider mount at each of the two distant ends above and below the slider, and the slider is correspondingly set up with a lock mechanism. By means of the mutual locking between the lock mechanism and the slider mount, the slide is consequently able to be attached on the upper cart stand. The slider is in pinned connection with a rear wheel frame at each side, where the rear wheel frame is joined to a rear wheel at its distant end; a bottom cart stand, in pinned connection with the adapter at its top and connected to a bag base at its bottom; and a linkage set, made up of a plurality of linkages, which are joined to the upper cart stand, the bottom cart stand, the front wheel frame and the rear wheel frames respectively, where the distant end of the front wheel frame is joined to the front wheel, to form links between the slider and the bottom cart stand, between the adapter and the rear wheel frame and between the bottom cart stand and the front wheel frame; by means of the setup of such links, once the lock mechanism is released and the upper cart stand is pulled, the simultaneous unfolding or folding of the upper cart stand, the bottom cart stand, the front wheel and the rear wheels can thus be accomplished, to facilitate the handiness in use.

DETAILED DESCRIPTION OF THE INVENTION

The structural traits and the functions of this invention are detailed described with reference to the following preferred embodiment and the accompanying drawings, which would help the honorable Examiner to comprehend thoroughly the present invention.

an upper cart stand1, having an upper bracket10at its top and an adapter11at its bottom, where the adapter11is provided with a slider12on its top, and the slider12is available to slide along the upper cart stand1. The upper cart stand1is provided with a slider mount13at each of the two distant ends above and below the slider12, where the slider mount13is provided with a fixing hole131and a ramp132, and the slider12is correspondingly set up with a lock mechanism14, which is made up of a buckle141pivotally connected to the slider12, an elastic post142coupled to the buckle141and a spring143set up between the slider12and the elastic post142. The slider12is in pinned connection with a rear wheel frame15at each side, where the rear wheel frame15is joined to a rear wheel16at its distant end; moreover, the upper cart stand1is provided with a springy element17internally, for instance, a spring, where its one end is fixed at the slider12while the other end at the bottom of the upper cart stand1;
a bottom cart stand2, in pinned connection with the adapter11at its top and having a bag base21at its bottom; and
a linkage set3, made up of a plurality of linkages, which are connected to the upper cart stand1, the bottom cart stand2, the front wheel frame4and the rear wheel frames15respectively, to form links between the slider12and the bottom cart stand2, between the adapter11and the rear wheel frame15and between the bottom cart stand2and the front wheel frame4, where the linkage set3comprises:
a first linkage3, coupling to the slider12of the upper cart stand1at its top, having a winding member31at its bottom, where the winding member31is coupled to a hinge22of the bottom cart stand2at its top, to form a link between the slider12and the bottom cart stand2, and the winding member31is coupled to the front wheel frame4at its bottom, where the front wheel frame4is connected to a front wheel41at its distant end;
a second linkage5, connecting the adapter11of the upper cart stand1and each of the two rear wheel frames15, to form links between the adapter11and each of the two rear wheel frames15; and
a third linkage6, coupling to the other hinge23of the bottom cart stand2at its top;
and coupling to the front wheel frame4at its bottom, to form a link between the bottom cart stand2and the front wheel frame4.

According to the aforementioned structural combination, once the golf bag cart of this invention is being unfolded, the elastic post142of the lock mechanism14is inserted in the fixing hole131of the slide mount13, shown inFIG. 4, to have the slider12fixed firmly, and to anchor the slider12to the upper cart stand1. Once the buckle141is being pulled open (release the lock mechanism14), the elastic post is forced to move inward and to escape from the fixing hole131, shown inFIG. 7; on the contrary, once the buckle141is released, the resilience of the spring143will push the buckle141and the elastic post142back in their places. Therefore, once the slider12is settled in a slider mount13, the buckle141has to be pulled out first, to let go of the elastic post142from the fixing hole131, and the slider12is sliding to the other slider mount13, where the elastic post142is pressed down first by the ramp132of the slider mount13until an insertion at the fixing hole131. Through the mutual locking of the lock mechanism14of the slider12and the slider mount13, the slider12is anchored firmly on the upper cart stand1.

Once intending for a folding, shown inFIGS. 7 & 8, the buckle41is first pulled out (release the lock mechanism14) and simultaneously the upper cart stand1is pushed frontward and upward. The slider12is pushed by the first linkage3to slide up along the upper cart stand1; meanwhile, the rear wheel frames15is pushed by the slider12to move upward and inward by means of the link between the second linkage5and the rear wheel frames15, which further drives the rear wheel16to fold upward and inward. Moreover, the moment the slider12is sliding up, the first linkage3is driven to swing, which pushes the front wheel frame4to move backward, and the front wheel frame4is shifted inward through the driving of the third linkage6, to enable the front wheel41folded inward below the bag base21, shown inFIG. 9, to accomplish the folding of the cart.

In short, once the lock mechanism14is released (pulling the buckle141out), and the upper cart stand1is pushed (or pulled) at the same time, the upper cart stand1, the bottom cart stand2, the front wheel41and the rear wheels16are able to be folded simultaneously, which facilitates substantially the handiness to operate.

On the contrary, once the golf bag cart is intended for an unfolding, the buckle41is pulled open and the upper cart stand1is pulled up, and by means of the link among the first linkage3, the slider12, the second linkage5and the rear wheel frame15, the rear wheels16are then unfolded; meanwhile, through the link among the winding member31of the first linkage3, the third linkage6and the front wheel frame4, the front wheel41is able to be unfolded simultaneously. And further through the lock mechanism14to secure the slider12, the upper cart stand1and the bottom cart stand2are locked into their relative positions, the front wheel41and the rear wheels16are able to be unfolded fixedly, which also facilitates substantially the handiness to operate.

It is worthy to mention one more time that the folding requires a pulling open on the buckle141and a pulling on the upper card stand1, which will lessen the included angle between the upper cart stand1and the bottom cart stand2gradually, shown inFIG. 8, and the slider12is sliding up along the upper cart stand1. Once it slides to the slider mount13at the top of the upper cart stand1, and the elastic post142is pushed into the fixing hole131, which will issue a sound, to remind the user that the folding is accomplished. Once the upper cart stand1and the bottom cart stand2are folded close to each other, the resilience of the stretched springy element17would not have them to unfold automatically. Moreover, due to the locking by the lock mechanism14, the upper cart stand1and the bottom cart stand2may not possibly be pulled apart easily. On the contrary, during the unfolding, the buckle141is pulled to open and the upper card stand1is pulled upward, the slider12will slide toward the adapter11automatically back to its position, subject to the resilience of the stretched springy element17, to support the required force during the unfolding. In short, a slight pull on the upper cart stand1is enough to unfold and anchor the cart, which substantially economize efforts and is extremely handy to operate.

From the aforesaid description, this invention features at least the following advantages and functions, which is much creative than the prior art:1. The upper cart stand1, the bottom cart stand2, the front wheel41and the rear wheels16can be unfolded or folded simultaneously, which is truly handy in use.2. During the folding of the cart, it is available to carry out the contraction in volume and the mutual locking of the slider12and the upper cart stand1enables a handy carrying.3. During the unfolding, the lock mechanism14supports automatically to anchor the cart and there is no need for additional joints to be fixed, which is truly handy in use.4. The upper cart stand1is provided with an extra springy element17internally, capable of supporting the unfolding of the cart, which facilitates the handiness to operate and also to save efforts.

To sum up, the disclosed concrete structure of the exemplified embodiment of the present invention is not only unknown to the prior art, but surely can accomplish the expected objective and function, which is construed as absolutely novel and creative, and a patent application for the invention is then filed according to the patent law.