Abstract: A collapsible structure for interlinking front and rear wheels of a golf cart is disclosed herein. It comprises an upper frame having two shaft racks, two handles and a supporting rod; a lower frame pivotally connected to the supporting rod and having a first assembling seat pivotally connected to the two shaft racks, two sliding sleeves, each having an upper connecting rod, a rear wheel joint rod and a front wheel push rod, and a second assembling seat having an oblique guide slot and a guiding tooth row in the oblique guide slot for connection to the front wheel push rod; two rear wheel assemblies connected to the two rear wheel joint rods; and a front wheel assembly comprising a guide rod having an annular teeth for engaging with the guiding tooth row in the oblique guide slot.

Abstract: A rear wheel interlock folding mechanism of a golf bag cart is revealed. An upper frame is fixed on an upper-frame connecting rod connected to a lower frame. A rear-wheel connecting rod is fixed on the lower frame and behind the upper-frame connecting rod. A rear-wheel set is set on each end of the rear-wheel connecting rod. The rear-wheel set includes a fixing base fixed on the rear-wheel connecting rod, a bending base pivotally connected to the fixing base, a rear wheel pivotally disposed on the outer end of the bending base, a rotating seat fixed on the upper-frame connecting rod and a link between the bending base and the rotating seat. Thereby the bending base is also moved to drive the rear wheel moving close to the lower frame when the upper frame is folded toward the lower frame. Thus the golf bag cart is folded conveniently.

Abstract: A rotating positioning member of a front wheel of a golf trolley is revealed. A front wheel set is disposed at a front end of a lower frame and including a front wheel base fixed on the lower frame, a front wheel frame, and a front wheel pivotally connected to the front wheel frame. The front wheel base is mounted with an inclined guide slot. A connecting rod is formed on the front wheel frame and pivotally connected to the inclined guide slot. Thus the connecting rod drives the front wheel frame to rotate 90 degrees and the front wheel frame further drives the front wheel to horizontally lean against the lower frame when the front wheel frame is rotated toward the lower frame in the inclined guide slot due to the connecting rod. Thus the golf trolley is easy to fold up for storage.

Abstract: A front wheel quick-release device of a golf cart includes a golf cart frame having a front wheel unit connected thereto. The front wheel unit has a connection tube and two rods extending from the connection tube. The golf cart frame has a tubular portion which has an engaging slot, and two guide slots are defined through two sidewalls of the tubular portion and communicate with the engaging slot. The connection tube is directly inserted into the engaging slot and the two rods movably extend through the guide slots to easily connect or replace the front wheel unit.

Abstract: A folding device for a golf cart includes a main part to which two side wheels, a handle and a front wheel unit are connected. A tubular portion is movably mounted to a front wheel stem and a connection member is connected between the tubular member and a handle stem. Two rods are connected between side wheel stems. An operation member is pivotably connected to the tubular portion and has notches so that the protrusion of the main part is engaged with the notches to control the main part to connect to or to separate from the tubular member. The tubular member is movable on the front wheel stem so as to fold or expand the front wheel unit.

Abstract: A collapsible golf trolley is revealed. A connection assembly that connects an upper frame, a lower frame, and mounts on two sides includes a locking body locked on a metal rod so as to improve the fastening strength. The connection assembly is further arranged with a guiding wheel corresponding to a guiding slot of a lower frame. This design makes the operation smoother while extending and folding the lower frame. Moreover, a turning member for turning and folding of a front wheel is disposed on a front end of the lower frame. According to the above structure, easy spreading and collapsing and firm connection of the golf trolley are achieved.

Abstract: A collapsible golf trolley is revealed. A connection assembly that connects an upper frame, a lower frame, and mounts on two sides includes a locking body locked on a metal rod so as to improve the fastening strength. The connection assembly is further arranged with a guiding wheel corresponding to a guiding slot of a lower frame. This design makes the operation smoother while extending and folding the lower frame. Moreover, a turning member for turning and folding of a front wheel is disposed on a front end of the lower frame. According to the above structure, easy spreading and collapsing and firm connection of the golf trolley are achieved.

Abstract: A front wheel of a golf cart includes a supporting component, a round rotating member, and a joining shaft coupling the rotating member to the supporting component; the supporting component includes a holding part, which has an outer stopping protrusion, a polygonal portion, and a round portion adjoining the polygonal portion; the shaft includes a shank partly held in the holding part; a spring biases the shaft to such a position that the shaft is prevented from rotating by the polygonal portion; a fixing component is secured around other end of the shank, and contains the stopping protrusion; the fixing component has a polygonal hollow portion to fit closely around the polygonal portion to prevent the shaft from rotating; the round rotating member can be turned together with the shaft to fold the front wheel after the polygonal hollow portion is relocated around the round portion.

Abstract: A front wheel of a golf cart includes a supporting component, a round rotating member, and a joining shaft coupling the rotating member to the supporting component; the supporting component includes a holding part, which has an outer stopping protrusion, a polygonal portion, and a round portion adjoining the polygonal portion; the shaft includes a shank partly held in the holding part; a spring biases the shaft to such a position that the shaft is prevented from rotating by the polygonal portion; a fixing component is secured around other end of the shank, and contains the stopping protrusion; the fixing component has a polygonal hollow portion to fit closely around the polygonal portion to prevent the shaft from rotating; the round rotating member can be turned together with the shaft to fold the front wheel after the polygonal hollow portion is relocated around the round portion.

Abstract: A frame of a wheel includes a ring, several spokes, and a hub; the ring has several connecting members on an inward side, and the spokes each have a connecting hole on each of first and second ends thereof, and are each joined to one corresponding said connecting member at their first ends with threaded fixing elements; the hub includes left and right holding members, each of which has several hollow receiving portions on an inner side thereof; each holding member has a connecting hole extending through each of the hollow receiving portions; the left holding member is joined to the right holding member with the hollow receiving portions thereof adjoining the hollow receiving portions of the right holding member respectively; the spokes are securely joined to the hub, with their second ends being received in the hollow receiving portions, with threaded fixing elements.

Abstract: A foldable golf cart has a folding mechanism interposed between a handle part and a frame; the frame has first and second rod parts; the folding mechanism includes a fixed piece secured to the first rod part, an acting piece positioned around the second rod part in a movable manner, a cylinder interposed between the fixed piece and the acting piece, a connecting rod, and a cam-headed pressing bar, which is pivoted to one end of the connecting rod at its cam-shaped head for moving the folding mechanism between a loosening configuration and a fixing one; the fixed piece, the acting piece and the cylinder have opposing toothed sides; the connecting rod is passed through the fixed piece, the acting piece, and the cylinder, and securely joined at other end to a threaded element positioned on an outer side of the fixed piece.

Abstract: A golf trolley includes a frame, and two propping members; the frame includes two tube parts; each of the propping members includes a sleeve portion, a connecting portion, a prop pad, and a stopping element; the sleeve portion is positioned around a corresponding one of the tube parts of the frame, and has a slot thereon, which extends in a direction perpendicular to an axial direction of the sleeve portion; the connecting portion is connected to the sleeve portion and the prop pad; the thickness of an upper end of the prop pad is greater than that of a lower end of the prop pad; the stopping element is secured on the corresponding tube part and held within the slot of the sleeve portion such that the propping member pivots about an axis of the tube part within a range depending on the length of the slot.

Abstract: A folding mechanism of a golf cart includes a fixed member secured to a middle rod part of a golf cart frame, first and second moving members joined to upper and lower rod parts of the frame respectively, and a spring-biased pivotal plate. The moving members each have a toothed portion, which has an engaging protrusion at one end. The toothed portion of the first moving member further has a stop portion. The moving members are pivoted to the fixed member, and engaged with each other such that angular displacement of one of the moving members will cause angular displacement of the other. The golf cart will be fixed in a stretched position when the engaging protrusions engage. The pivotal plate is normally in a first position, in which position the front end thereof will engage the toothed portion of the first moving member to prevent the golf cart from folding.

Abstract: A golf trolley includes a frame, and two propping members; the frame includes two tube parts; each of the propping members includes a sleeve portion, a connecting portion, a prop pad, and a stopping element; the sleeve portion is positioned around a corresponding one of the tube parts of the frame, and has a slot thereon, which extends in a direction perpendicular to an axial direction of the sleeve portion; the connecting portion is connected to the sleeve portion and the prop pad; the thickness of an upper end of the prop pad is greater than that of a lower end of the prop pad; the stopping element is secured on the corresponding tube part and held within the slot of the sleeve portion such that the propping member pivots about an axis of the tube part within a range depending on the length of the slot.

Abstract: A folding mechanism includes a fixed member secured to a middle rod part of a golf cart frame, first and second moving member joined to upper and lower rod parts of the frame respectively, and a spring-biased pivotal plate; the moving members each have a toothed portion, which has an engaging protrusion at one end; the toothed portion of the first moving member further has a touched and stopped portion; the moving members are pivoted to the fixed member, and engaged with each other such that angular displacement of one of the moving members will cause angular displacement of the other; the golf cart will be fixed in a stretched position when the engaging protrusions engage; the pivotal plate is normally in a first position, in which position the front end thereof will engage the toothed portion of the first moving member to prevent the golf cart from folding.

Abstract: A golf cart includes a frame including two parallel rods, a front wheel, and a mechanism used for displacing the wheel between stretched position and folded one; the mechanism includes two locating members secured to the rods, and a wheel support, which has two bars each passing into a hole of a corresponding locating member, and which has pegs near the bars and projecting into the locating members; each locating member has first and second trenches on two sides of the hole; the holes are shaped such that the bars are linearly displaceable therein; when the bars are in first sections of the holes, the pegs won't engage the trenches, and the wheel support can be turned around one hundred and eighty degrees between folded position and stretched one; when the bars are displaced to second sections of the holes, the pegs will engage the trenches to secure the wheel support.

Abstract: A golf cart has a locating block secured to a lower end of a main support rod thereof, a support member pivoted to the block to be angularly displaceable between a forwards stretched position and a rearwards folded one, and a front wheel supported on the support member; the support member has a control lever fitted thereto, and engaging elements movably fitted thereon, which will disengage the locating block for allowing the support member to be angularly displaced relative to the locating block as soon as the control lever is moved to an unlocking position; the engaging elements will engage the locating block to secure the support member in position as soon as the control lever is moved to a locking position after the front wheel has been moved to one of the folded and the stretched positions together with the support member.