WO2010020192A1

WO2010020192A1 - Foldable golf cart

Info

Publication number: WO2010020192A1
Application number: PCT/CN2009/073392
Authority: WO
Inventors: 黄景棠
Original assignee: Huang Jingtang
Priority date: 2008-08-22
Filing date: 2009-08-21
Publication date: 2010-02-25
Also published as: CN101352607A; CN101352607B

Abstract

A foldable golf cart comprises a frame (1), a front wheel (2), a rear wheel (3), a handle component (4), a golf bag upper bracket (5), a golf bag lower bracket (6), a rear wheel folding device (7) and a foldable locking mechanism (8). The hinged frame consists of a main pipe component (9), a vertical pipe component (10) and a central bracket (11). The front part of the main pipe component is provided with the front wheel and the lower bracket and the rear end thereof is fixed with the central bracket, and the lower end of the vertical pipe component is pivotally connected on the central bracket transversely and horizontally and the upper end thereof is fixed with the upper bracket and pivotally connected with the handle component. The rear wheel folding device comprises two parallel four-link mechanisms (17) which are symmetrically arranged by a pipe seat (12) as a common frame part. The links are respectively provided with a rear wheel, the upper end of a pushing rod (20) is pivotally connected at the two sides of the lower part of the vertical pipe component respectively and the lower end thereof is pivotally connected on the rear wheel folding device. Independent guide rail meets the requirements of wearing resistance, rigidity and smoothness, which makes the frame not easy to be abraded, so there is no effect on appearance of the cart. The cart can be folded into a small size.

Description

Folding golf carts

The present invention relates to a general cart for use in sports transportation, and more particularly to a folding golf cart.

Background technique

The primary requirement for golf carts is that there must be a large enough frame so that different sizes of golf bags can be shipped, usually by the upper and lower brackets of the bag on the cart to support the upper and lower parts of the golf bag, which means There should be a large gap between the upper and lower brackets of the bag. However, this brings difficulties to the transportation of the cart. The solution to this problem is to design the cart to be folded, open when in use, and fold or store or transport.

Folding golf carts can be folded in a variety of ways, some are monolithic frames, the front and rear wheels are hinged to the frame, that is, the front and rear wheels can be folded, as in US patent USA6698789, but this structure is installed in The fixed spacing between the upper and lower brackets of the bag on the overall frame determines the minimum size that can be achieved by folding.

In addition, the rear wheel device of the folding golf cart is hinged on the frame. For reliable support, the hinged rear wheel device generally has a strut, and the movable end of the strut is often fixed on a slider, and the slider is With the frame as the guide rail, the rear wheel device corresponds to the folded transport state and the open working state when the slider is slidably locked on the guide rail at both ends of the guide rail. As the guide rail, in addition to the required wear resistance, it also has better rigidity and straightness, and the structural processability is convenient and easy to process. This puts a high technical requirement on the frame, but the frame is generally difficult to process, and the worn frame also affects the appearance of the cart.

In addition, for a folding golf cart, there should be a locking mechanism for locking the golfer's pusher in a folded transport state or in an unfolded use state, and the locking mechanism should be locked in a secure structure for ease of use.

Golf carts generally have upper and lower brackets for the bag. The brackets generally have an open-up saddle shape to support the upper and lower portions of the golf bag. In order to fix the golf bag on the upper and lower brackets, generally There are elastic ropes with hooks or bundles like belts. If it is frequently taken from the bag or put into the club, it will be inconvenient to adjust the positioning, tightening or loosening of the belt. Another type of fixed golf bag on the bracket is provided with a hinged flap on the saddle of the bracket, which can be used to fix and hold the bag, but the fixing or loosening of the tab after pressing the bag The adjustment is made by screw fastening, which is still quite inconvenient.

Summary of the invention

A first object of the present invention is to provide a struts that can be folded to a smaller size under the condition that the upper and lower brackets of the bag are at a large distance, and that have a struts that can reliably support the folded rear wheel device, and that are not supported by the struts A folding golf cart that will wear out the frame without affecting the appearance of the cart.

A second object of the present invention is to provide a folding golf cart having a bracket for a golf bag that is securely fastened and simple to adjust, on the basis of the above. The first object of the present invention can be achieved by the following technical solutions: A folding golf cart including a frame, a front wheel assembly, a rear wheel assembly, a handle assembly, a bracket on a bag, a bag under the support The frame and the rear wheel folding device are characterized in that: the frame is a foldable articulated frame, which is composed of a main assembly, a riser assembly and a central support, and the front end of the main assembly is mounted with a front wheel and a lower bag The bracket and the rear end are fixedly connected with the central bracket, and the central bracket is hinged to the lower end of the riser assembly through the first hinge assembly with the top lock switch, and the upper end of the riser assembly is fixed with the bracket on the ball bag and passes through the second The hinge assembly is hinged to the lower end of the handle assembly; the rear wheel folding device comprises two sets of parallel four-bar mechanism, a guide rail slider mechanism, left and right push rods and left and right pull rods: two sets of parallel four-bar mechanisms with the central bracket as a common frame member Symmetrically mounted on both sides of the center bracket, the rear wheel assembly is respectively mounted on the connecting rods of the left and right parallel four-bar mechanism; the guide rail slider mechanism: the front of a guide rail Fixed on the main assembly, the rear end is fixed on the main assembly or the front part of the central bracket, the slide sleeve has a slider on the guide rail, and the slider has left and right horizontal horizontal hinges respectively respectively hinged lower ends of the left and right push rods, and the upper ends of the left and right push rods are respectively hinged On the lower two sides of the riser assembly, the front ends of the left and right pull rods are vertically hinged on both sides of the slider, and the rear ends of the left and right pull rods are respectively hinged in a connecting rod of the left and right parallel four-bar mechanism.

The main assembly is a front fork bifurcated tube, the fork end is provided with a horizontally transverse front axle, the middle axle of the front axle is fixed with a lower bag bracket, and the two axle ends are each provided with a front wheel assembly.

The riser assembly is a frame structure having two longitudinal and two cross bars, and the front end of the longitudinal bar is horizontally and horizontally hinged on the first hinge seat on the top surface of the central support.

The hinged rod of the parallel four-bar mechanism and the hinge point of the frame are farther from the center axis of the frame than the front connecting rod, so that the folded rear wheel is closer to the axis.

The bracket on the bag includes a U-shaped bag saddle that is laterally fixed on the cart frame and has an opening upward, and the two fork arms of the fork bag saddle are longitudinally hinged with a fin. A ratchet mechanism is provided between the hinged fork arm end and the wrap end, so that the wrap is limited when the fork arm is opened outward, and the hinge shaft is also covered with a wrap torsion spring.

The ratchet mechanism includes a pawl and a ratchet, and the ratchet is fixed at the end of the wrap, and the ratchet shaft is the hinge shaft of the wrap and the fork arm.

The pawl is hinged from the middle and is hinged to the end of the fork arm (of course, it can also be fixed at the end of the bracket), and the hinge shaft is parallel to the hinge shaft of the bracket and the fork arm, and the pawl hinge shaft is sleeved The pawl resets the torsion spring.

The pawl is bent into a V shape therefrom.

The ratchet fixing structure fixed at the end of the wrapper is: the ratchet side extends into a fixed rod, the rod end is provided with a hole parallel to the ratchet axis, and is fixed on the wrapping piece.

Since the golf cart of the present invention adopts a folding frame, it can be folded to a smaller size under the condition that the upper and lower brackets of the bag are spaced at a large distance, and the strut slider of the folded rear wheel device can be reliably supported on the independent guide rail. Sliding, independent guide rail can better meet the requirements of wear resistance, rigidity and straightness, and it is more convenient to process. It is not easy to wear and does not affect the appearance of the cart. It avoids the high technical requirements of the frame as the guide rail. The prior art hinged seat with a locking switch has the advantages of simple structure, easy locking and easy unlocking; the saddle hinge with a ratchet mechanism is adjusted to facilitate the pressing of the bag, and the opening size of the wrapping piece can be freely grasped and locked. In the state of need. DRAWINGS

The present invention will be further described in detail below through specific embodiments and drawings:

Figure 1 is a front elevational view showing the structure of the golf cart embodiment of the present invention in an open state; Figure 2 is a left side view of Figure 1;

Figure 3 is a right side view of Figure 1;

Figure 4 is a plan view of Figure 1;

Figure 5 is a bottom view of Figure 1;

Figure 6 is a perspective view of Figure 1;

Figure 7 is a perspective exploded view of the embodiment shown in Figure 1;

Figure 8 is a front elevational view of the main assembly of the frame of the embodiment of Figure 1 and the central support and rear wheel folding device portions;

Figure 9 is a plan view of Figure 8;

Figure 10 is a rear elevational view of Figure 8;

Figure 11 is a bottom view of Figure 8;

Figure 12 is a right side view of Figure 8;

Figure 13 is a left side view of Figure 8;

Figure 14 is a perspective view of Figure 8;

Figure 15 is a perspective exploded view of the embodiment main assembly, the guide rail slider mechanism, the left and right push rods, and the left and right pull rods; Figure 16 is a perspective exploded view of the central support and the parallel four-bar mechanism of the embodiment;

Figure 17 is a perspective view showing the main assembly, the center bracket, the guide rail slider mechanism, the left and right push rods, and the left and right pull rods in the upward direction of the embodiment;

Figure 18 is a front elevational view showing the riser assembly of the frame of the embodiment;

Figure 19 is a plan view of Figure 18

Figure 20 is a bottom view of Figure 18

Figure 21 is a left side view of Figure 18.

Figure 22 is a right side view of Figure 18

Figure 23 is a perspective view of Figure 18;

Figure 24 is a front elevational view of the handle assembly of the embodiment;

Figure 25 is a plan view of Figure 24.

Figure 26 is a bottom view of Figure 24

Figure 27 is a left side view of Figure 24.

Figure 28 is a right side view of Figure 24.

Figure 29 is a perspective view of Figure 24;

Figure 30 is a schematic view showing the folding start of the embodiment; Figure 31 is a plan view of Figure 30;

Figure 32 is a schematic illustration of the folding process of the embodiment of Figure 30;

Figure 33 is a plan view of Figure 32;

Figure 34 is a schematic view showing the folding of the embodiment of Figure 30;

Figure 35 is a plan view of Figure 34;

Figure 36 is a left side view of Figure 34;

Figure 37 is a right side view of Figure 34;

Figure 38 is a bottom view of Figure 34;

Figure 39 is a perspective view showing the folding completed;

Figure 40 is a front elevational view showing the structure of the bracket on the bag of the embodiment;

Figure 41 is a left side view of Figure 40;

Figure 42 is a plan view of Figure 40;

Figure 43 is a rear elevational view of Figure 40;

Figure 44 is a perspective view of Figure 40;

Figure 45 is a perspective exploded view of Figure 40;

Figure 46 is a front view of the wrap;

Figure 47 is a cross-sectional view of Figure 46;

Figure 48 is a perspective view of Figure 46.

In the picture: 1-frame, 2-front wheel assembly, 3- rear wheel assembly, 4-handle assembly, 5-ball pocket upper bracket, 6-ball pocket lower bracket, 7-rear wheel folding device, 8- Frame hinge point, 9-supervisor assembly, 10-riser assembly, 11-central bracket, 13- hinge lock switch, 14-first hinge, 15-rail, 16-slider, 17-parallel four-bar mechanism , 18-parallel four-bar linkage, 19-slide top left and right horizontal horizontal hinge, 20-push, 21-pull, 22-parallel four-bar linkage, 23- parallel four-bar linkage rear linkage Hinged point with the frame, 24-parallel four-bar mechanism front connecting rod and frame hinge point, 25-rack center axis, 31-ball bag upper bracket bag saddle, 32-bag saddle fork arm, 33- Ratchet mechanism, 34-enclosure, 35-ratchet, 36- pawl, 37-pawl hinge, 38-bracket and fork end hinge, 39-front axle, 40-open loop, 42-ratchet Rod, 43-ratchet fixing rod fixing screw, 44-ratchet limiting lug, 45-pawl reset torsion spring, 46-ring torsion spring, 47-second reaming.

detailed description

As shown in FIGS. 1 to 7, the golf cart embodiment of the present invention includes a frame 1, two front wheel assemblies 2, two rear wheel assemblies 3, a handle assembly 4, a bracket on a bag 5, and a ball. Under the bag 6, the rear wheel folding device 7, the frame 1 is an articulated frame (see Figure 1 and Figures 7, 30, 32), so that the frame is folded to the minimum, the articulated frame 1 is supervised by the supervisor The assembly 9, the riser assembly 10 and the central support 11 are formed. The main assembly 9 is a longitudinal main pipe, the front end of which is bifurcated, the two fork ends are provided with a front axle, and the middle of the front axle is fixed with a lower bag 6 and a front axle. Each of the two shaft ends is provided with a front wheel assembly 2 (see Figs. 4, 7 and 15), the rear end of the main assembly 9 and the center bracket 11 In the fixed connection, the first hinge seat 14 with the lock switch 13 is fixed horizontally horizontally on the top surface of the center bracket 11, and the center bracket 11 is hinged to the lower end of the riser assembly 10 through the first hinge seat 14 (see Figs. 6, 7).

Referring to Figures 18 to 23, the riser assembly 10 is a frame structure having two longitudinal tubes and two cross bars. The lower ends of the two vertical tubes of the riser assembly 10 are hinged to the hinge ends of the first hinge 14 (see Figures 1, 2). And FIG. 7), the upper end is fixed with the bag upper bracket 5, and the upper end of the riser assembly 10 is also hinged with the handle assembly 4 by the second hinge 47 (see FIGS. 1 and 7).

The hinges 14 and ₄₇ are the prior art, and are commonly used in the folding mechanism of the folding bicycle. The hinged seat is provided with a relatively rotatable hinge shaft, a hinge switch 13 is provided on one side of the hinge seat, and the hinge shaft is opened by the switch 13 Turning, the switch 13 is locked to lock the hinge.

Referring to FIG. 7 to FIG. 17, the rear wheel folding device Ί includes left and right push rods 20, left and right pull rods 21, guide rail slider mechanism and two sets of parallel four-bar mechanism 17: two sets of parallel four-bar mechanisms with the central support 11 as a common frame member Symmetrically mounted on both sides of the center bracket 11, the rear wheel assembly 3 is mounted on the connecting rod 18 of the left and right parallel four-bar mechanism (see Figs. 4 and 7, 16); the front end of the guide rail 15 of the rail slider mechanism is fixed to the main assembly The lower end of the 9 and the rear end are fixed to the front part of the center bracket 11. The sliding rail 16 of the guide rail 15 has a slider 16 (see Figs. 14, 15, and 17). The top of the slider 16 has left and right horizontal horizontal hinges 19 which are respectively hinged and pushed. The lower end of the rod 20, the upper ends of the left and right push rods 20 are respectively hinged on the lower sides of the riser assembly 10, and the front ends of the left and right pull rods 21 are vertically hinged on both sides of the slider 16, and the rear ends of the left and right pull rods 21 are hinged to the parallel four-bar mechanism. In the rear link 22 (see Figures 11, 16).

As shown in Figures 9 and 11, the hinge link 23 of the parallel four-bar linkage 17 and the hinge point 23 of the frame are farther from the frame center axis 25 than the front link bar and the frame hinge point 24, so that the rear wheel can be Folded closer to the center axis 25 of the frame, which is the center axis of the frame.

When the slider 16 is slidably locked on the guide rail 15 at both ends of the guide rail, the rear wheel device respectively corresponds to the folded transport state and the open working state (see FIGS. 30 and 32), and the independent guide rail 15 can be better. It meets the requirements of wear resistance, rigidity and straightness, and is more convenient to process. It does not affect the appearance of the cart after it is not easily worn, and avoids the high technical requirements of the frame as the guide rail.

The folding lock mechanism of the folding golf cart is capable of satisfying the locking state in the folded state and the locking in the use state, and is required to be convenient and easy to lock, lock and unlock. The folding golf cart of the present invention has an articulated frame. The folding of 1 is the folding of the riser assembly 10 relative to the main assembly 9, and the folding of the handle assembly 4 relative to the riser assembly 10, as previously described, since both employ prior art hinged locks with locking switches , can meet the requirements.

Once the folding of the riser assembly 10 relative to the main assembly 9 is locked, the tie rod and the push rod are also fixed, i.e., the rear wheel folding device 7 is locked.

When it is necessary to fold the rear wheel folding device from the open state of the cart, the locking switch of the first hinge 14 is opened.

13. The hinge shaft is rotatable. At this time, the riser assembly 10 is folded forward about the hinge axis 8. The left and right push rods 20 respectively hinged on the lower sides of the riser assembly 10 push the slider 16 to the front end of the guide rail 15. Position, the vertically hinged left and right pull rods 21 on both sides of the slider 16 pull the parallel four-bar mechanism 17 to swing forward (see Figs. 33, 32), and the two rear wheels can be folded to both sides of the two front wheels (see Figures 31, 33). 35), at this time, the riser assembly 10 open ring card 40 will jam the supervisor The assembly, the riser assembly 10 is folded over with the main assembly, and the unlocking of the handle assembly 4 relative to the riser assembly 10 is performed as such, so that the entire vehicle can be folded together, and then the lock switches of the two hinges can be locked The whole vehicle is in a folded state.

Conversely, when it is necessary to open the cart to the use state, the lock switches of the two hinges are first unlocked. Since the split ring card 40 is elastic, the riser assembly 10 can be pulled apart when unlocking, and the riser is opened. When the assembly 10 is rearwardly extended about the hinge axis, the left and right push rods 20 respectively hinged on both sides of the lower portion of the riser assembly 10 are pulled to slide the slider 16 to the rear end position of the guide rail 15, and the left and right sides of the slider 16 are vertically hinged. The pull rod 21 pulls the parallel four-bar mechanism 17 to swing back to the final position, and the two hinged lock switches 13 are locked and locked, and the whole vehicle can be locked in the use state.

Referring to Figures 40 to 48, the bag upper bracket 5 of this example includes a bag saddle 31 which is laterally fixed to the cart frame, has an open upward fork shape, and two fork arms 32 arms of the fork bag saddle The end is longitudinally hinged with a wrap 34, the hinge shaft is a light body bolt 38, and the middle portion of the boltless thread is used as an articulated shaft, and at the same time, the nut can be fixed; the light body bolt hinge shaft 38 is also covered with a wrap torsion spring 46. The flap has an elastic force that is open.

A ratchet mechanism 33 is disposed between the hinged fork arm end and the web end. The ratchet wheel 35 of the ratchet mechanism is unidirectionally rotated by the pawl 36. The ratchet 35 can be reversed when the pawl 36 is lifted. The flap 34 is arbitrarily bent inwardly against the fork arm 32 by the size of the golf bag to press the bag, and is limited when it is flared outward, since the tab 34 is not openable without lifting the pawl 36.

The ratchet wheel 35 of the ratchet mechanism of this example is fixed to the end of the wrap 34, and the ratchet shaft, that is, the hinge shaft 38 of the wrap and the fork arm. Since the opening range of the wrap 34 is not 360 degree, the ratchet 35 of this example is used. It is not necessary to design a complete ratchet, but to extend one side of the ratchet into a fixed rod 42 having a hole parallel to the axis of the ratchet and fixed to the shroud 34 by a ratchet fixing rod fixing bolt 43. A limit projection 44 is also extended on the fixing rod 42 to restrict the opening 34 from being too large.

In order to facilitate adjustment or release of the wrapper 34, the pawl 36 of the ratchet mechanism of this example is bent into a V shape and is opened at a middle bend, and is bolted to the end of the fork arm as a hinge shaft, the spine The claw hinge shaft 37 is parallel to the hinge shaft 38 of the bracket and the fork arm, and the pawl hinge shaft 37 is sleeved with a pawl return torsion spring 45. To prevent loosening, the nut of the pawl hinge shaft 37 is in the form of a sheet, which can be stuck in Inside the groove at the end of the fork.

In this way, the front end of the V-shaped pawl 36 is normally caught on the ratchet teeth by the reset torsion spring 45 to restrict the reverse rotation, that is, the opening and closing of the tab 38 is fixed, but the ratchet 35 can be rotated forward. When the rear end of the V-shaped pawl 36 is pressed, the V-shaped pawl 36 swings about the hinge shaft 37, and the front end is lifted, that is, the pawl is disengaged from the ratchet ratchet, and the ratchet can be reversed.

The open size of the shim can be freely grasped and locked in the desired state.

Claims

Rights request

A folding golf cart comprising a frame (1), a front wheel assembly (2), a rear wheel assembly (3), a handle assembly (4), a bag upper bracket (5), a bag lower bracket ( 6), a rear wheel folding device (7), characterized in that: the frame (1) is a foldable articulated frame, consisting of a main assembly (9), a riser assembly (10) and a central support ( 11) The front end of the main assembly (9) is equipped with a front wheel (2) and a lower bag bracket (6), the rear end is fixedly connected to the center bracket (11), and the center bracket passes the top surface with a locking switch (13) The first hinge assembly (14) is hinged to the lower end of the riser assembly, and the upper end of the riser assembly (10) is secured with the upper bracket (5) and simultaneously passes through the second hinge assembly (47) and the handle assembly ( 4) lower end hinge; the rear wheel folding device (7) comprises two sets of parallel four-bar mechanism (17), a guide rail slider mechanism, left and right push rods and left and right pull rods: two sets of parallel four-bar mechanism (17) with a central bracket (11) Symmetrically mounted to the center bracket (11) for the common frame member The rear wheel assembly (3) is respectively mounted on the connecting rods of the left and right parallel four-bar mechanism (17); the guide rail slider mechanism: the front end of a guide rail (15) is fixed on the main assembly (9), and the rear end is fixed on the main pipe On the front part of the component (9) or the center bracket (11), the slide sleeve (16) has a slider (16), and the slider (16) has left and right horizontal horizontal hinges (19) respectively hinged left and right push rods (20) At the lower end, the upper ends of the left and right push rods (20) are respectively hinged on the lower sides of the riser assembly (10), and the front ends of the left and right pull rods (21) are vertically hinged on both sides of the slider (16), and the left and right pull rods (21) are respectively The rear ends are respectively hinged in a connecting rod of the left and right parallel four-bar mechanism (17).

A folding golf cart according to claim 1, wherein: said main assembly (9) is a front end bifurcated tube, and the fork end is provided with a horizontally transverse front axle (37), a front axle ( 37) The lower section of the bag (6) is fixed in the middle section, and a front wheel assembly (2) is attached to each of the two shaft ends.

A folding golf cart according to claim 2, wherein said riser assembly (10) is a frame structure having two longitudinal and two crossbars. The folding golf cart according to claim 3, characterized in that: the front end of the guide rail (15) is fixed under the main assembly (9) and fixed to the front of the central support (11).

A folding golf cart according to any one of claims 1 to 4, wherein: said bag upper bracket (5) includes a bottom portion laterally fixed to the cart frame, and has an open upward U shape a bag saddle (31), a two-legged arm (32) end of the bag saddle (31) is longitudinally hinged with a wrapper (34), and a hinged fork arm (32) end and a wrap (34) end are disposed between The ratchet mechanism (33) is also provided with a torsion spring (46) on the hinge shaft. A folding golf cart according to claim 5, wherein said ratchet mechanism (33) includes a pawl (36) and a ratchet (35), said ratchet (35) being fixed to the end of the tab, the spine The axle is the hinge shaft of the bracket and the fork arm (38); the pawl (36) is hinged from the middle and is hinged at the end of the fork arm by a hinge shaft (37), and the hinge shaft (37) is parallel to the bracket and The articulated shaft (38) of the wishbone arm has a pawl reset torsion spring (45) on the pawl hinge shaft.

A folding golf cart according to claim 6, wherein: said pawl (36) is bent into a V shape therefrom.

The folding golf cart according to claim 7, wherein: the ratchet (35) fixed at the end of the bracket has a fixed structure: the ratchet side extends into a fixed rod (42), and the rod end is opened. A hole parallel to the axis of the ratchet and fixed to the shroud (34).