Golf cart and vibration isolation golf bag securing system and method of adjustment

Abstract

The application discloses a golf cart and a vibration isolation golf bag fixing system and adjusting method thereof. The system comprises a tubular frame integrated frame fixedly connected with a frame, a double-layer guide rail assembly installed on the inner side of the frame, and a sliding clamping assembly installed on the guide rail, and the golf bag fixing function is directly integrated into the frame structure. The double-layer guide rail assembly provides double-point constraint at two height positions of the upper and lower parts of the golf bag; the sliding clamping assembly can be self-adapted to different diameter golf bags. In the vibration isolation scheme, the double-layer guide rail adopts an arc-shaped guide rail, the sliding clamping assembly is installed in a non-locked slidable state, and the constraint force of mutual pulling is applied between groups through a connecting piece, and mechanical balance is formed with the sliding component of the golf bag gravity along the arc surface; when the vehicle vibrates, the sliding clamping assembly and the connecting piece are coupled as a whole inertia unit, and reverse sliding is generated relative to the arc-shaped guide rail, passive vibration isolation is realized through displacement decoupling and friction energy dissipation, and impact and vibration in the driving process are effectively attenuated.

Description

Technical Field

[0001] This invention relates to golf cart technology, specifically to a golf cart and its vibration-damping bag fixing system and adjustment method. Background Technology

[0002] Currently, golf carts typically use the bag rack as a separate external accessory mounted at the rear of the cart. This approach has the following three drawbacks: First, the structural integration is low. The ball-shaped frame and the chassis are connected separately, which increases the number of parts and the weight of the whole vehicle. In addition, the rigidity and load-bearing capacity of the external mounting points are limited by the connection interface.

[0003] Secondly, the compatibility is poor. Existing solutions mostly use rigid clamping or binding fixation at a single height position. For example, CN206660509U uses an articulated clamping arm to clamp the ball bag at a single height, and CN204034206U uses a single-point support structure combining a fixing plate and a buckle. Both lack the ability to continuously adjust the position along the guide rail direction, making it difficult to adapt to ball bags of different widths and diameters.

[0004] Third, the vibration isolation performance is insufficient. During golf cart operation, the road surface excitation frequency is typically in the range of 2–15Hz. Existing solutions either completely neglect vibration isolation or rely solely on the material elasticity of the binding components for passive vibration suppression (such as CN222808011U which increases friction through elastic connecting strips). They lack a dedicated vibration isolation mechanism that matches the road surface excitation frequency band, thus failing to effectively attenuate the vibration impact transmitted to the golf bags. Furthermore, when multiple golf bags are carried simultaneously, existing solutions cannot achieve adaptive load balancing among the bags. Summary of the Invention

[0005] To address the problems of existing golf carts where the bag rack is set up separately as an external accessory for the rear seat, resulting in structural redundancy and insufficient vibration isolation performance, this invention provides a golf cart and its vibration isolation bag fixing system and adjustment method. The bag fixing function is directly integrated into the frame structure, and passive vibration isolation is achieved through the coupling of the arc-shaped guide rail and the connecting parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A golf cart includes a chassis and a body structure, and a bag securing system. The bag securing system includes an integrated tubular frame, a double-layer rail assembly, and at least one set of sliding clamping assemblies. The integrated tubular frame is fixedly connected to the chassis or body structure, serving as both a structural load-bearing skeleton and a bag mounting base. The double-layer rail assembly is installed inside the integrated tubular frame and includes two parallel rails arranged vertically, each rail having a sliding portion extending along its length. At least one set of sliding clamping assemblies is slidably mounted on the sliding portion and configured to secure the bag with straps. The sliding clamping assemblies positioned on the two rails form a set, securing the bag at two height points: upper and lower.

[0007] In one embodiment, the double-layer guide rail assembly is a double-layer linear guide rail assembly, the sliding part is a linear sliding part, and the sliding clamping assembly is a sliding clamping locking assembly that can be locked at the current position of the linear sliding part. The sliding clamping locking assembly includes a clamping block, a flexible adjustable section that is retractably mounted on the clamping block and self-holding by damping force, and a strap buckle mechanism configured to clamp the strap after it passes through the flexible adjustable section and around the ball bag.

[0008] In another embodiment, the ball bag fixing system includes at least two sets of the sliding clamping assemblies. The double-layer guide rail assembly is a double-layer arc-shaped guide rail assembly, and the sliding part is an arc-shaped sliding part that is high in the middle and low at both ends, with the highest point in the middle section forming the arc apex. The sliding clamping assembly is installed on the arc-shaped sliding part in a non-locking, slidable state. The ball bag fixing system also includes a connecting member connected between at least two sets of sliding clamping assemblies, configured to apply a constraint force that pulls each set closer to the other, forming a mechanical balance with the downward component of the ball bag's weight along the arc surface, so that each set is stably stopped on both sides of the arc apex. When the vehicle vibrates, each set of sliding clamping assemblies is coupled into an integral inertial unit through the connecting member, and slides in the opposite direction relative to the arc-shaped sliding part, achieving passive vibration isolation.

[0009] This invention also provides a golf cart rear rack bag fixing system with passive vibration isolation function, including a tubular integrated frame, a double-layer arc-shaped guide rail assembly, at least two sets of sliding clamping assemblies, and connecting parts. The tubular integrated frame is fixedly connected to the golf cart. The double-layer arc-shaped guide rail assembly is installed inside the tubular integrated frame and includes an upper arc-shaped guide rail and a lower arc-shaped guide rail. Each arc-shaped guide rail has an arc-shaped sliding part that is high in the middle and low at both ends, with the highest point in the middle section forming the arc apex. At least two sets of sliding clamping assemblies are installed on the arc-shaped sliding parts in a non-locking, slidable state, and each set is used to fix a golf bag. Each set of sliding clamping assemblies includes two clamping blocks located at corresponding positions on the upper and lower arc-shaped guide rails, a flexible adjustable section that is retractably installed on the clamping blocks and self-holding by damping force, and a strap buckle mechanism configured to clamp the strap after it passes through the flexible adjustable section and around the golf bag. The clamping blocks are provided with connecting anchor points. The connecting member connects between each group of sliding clamping assemblies and is configured to apply a constraint force that pulls the groups closer together. This force forms a mechanical balance with the downward component of the ball bag's weight along the arc surface, allowing each group to remain stably stationary on both sides of the arc apex. When the vehicle vibrates, each group of sliding clamping assemblies and the connecting member, as coupled inertial units, slide in the opposite direction relative to the arc-shaped sliding part, achieving passive vibration isolation.

[0010] Furthermore, the arc-shaped sliding parts of the upper and lower arc-shaped guide rails adopt the same radius of curvature, so that the clamping blocks corresponding to the positions on the upper and lower guide rails are always in the same vertical plane at any time.

[0011] As the first optional configuration of the connector, the connector includes two vertical connectors and one horizontal elastic connector. The two vertical connectors vertically connect the clamping blocks of each set of sliding clamping assemblies located on the upper arc-shaped guide rail and the clamping blocks located on the lower arc-shaped guide rail, respectively. The horizontal elastic connector is connected between the two vertical connectors, forming an overall H-shaped configuration.

[0012] As a second optional configuration of the connector, the connector includes a central tension adjusting disc and multiple radial elastic ropes. The central tension adjusting disc is disposed between each set of sliding clamping assemblies, and each radial elastic rope extends from the central tension adjusting disc to a connecting anchor point on each clamping block. The central tension adjusting disc is provided with a tension adjusting knob for simultaneously adjusting the pretension of each radial elastic rope.

[0013] As a third optional configuration of the connector, the connector is a closed elastic rope connected end to end, which passes through the connection anchor points on each clamping block in sequence to form a closed loop. Each connection anchor point is provided with a guide pulley or an arc-shaped guide hole, so that the impact load is adaptively redistributed among the anchor points.

[0014] As a fourth optional configuration of the connector, each clamping block is provided with multiple connection anchor points, and each connection anchor point is provided with a quick-release hook. The connector is composed of multiple elastic rope segments with hook ends at both ends, and the connection topology can be reconfigured in the field by selecting different combinations of anchor points.

[0015] The present invention also provides a method for fixing and adjusting a ball bag using the above-mentioned ball bag fixing system with passive vibration isolation function, comprising the following steps: Step 1: Push at least two sets of sliding clamping components along the arc-shaped sliding part to the preset working positions on both sides of the arc top; Step 2: On each set of sliding clamping components, pull the adjustable bending section to the appropriate extension length according to the outer diameter of the ball bag. After the strap passes through the adjustable bending section and wraps around the surface of the ball bag, it is tightened and fixed by the strap buckle mechanism. By utilizing the adaptive balance between the damping extension characteristics of the adjustable bending section and the tension of the strap, the adjustable bending section is automatically adjusted to fit the wrapping arc of the ball bag surface. Step 3: Install connecting parts between each group of sliding clamping components to achieve mechanical balance between the constraint force of the connecting parts and the downward sliding component of the weight of each ball bag along the arc surface, and the system automatically enters the passive vibration isolation working state. Step 4: When the two ball bags have different masses, adjust the effective length of the connecting parts to the sliding clamping components on both sides to make the two ball bags approach the symmetrical position on both sides of the arc apex.

[0016] The beneficial effects of this invention are as follows: 1) The ball bag fixing function is directly integrated into the tubular frame, eliminating the traditional external ball bag rack, reducing the number of parts, simplifying the rear structure of the vehicle, and reducing the overall weight and manufacturing cost.

[0017] 2) The combination of double-layer guide rails and sliding clamping components allows the fixed position of the ball bag to be continuously adjusted along the guide rail direction, adapting to ball bags of different widths and quantities, and is highly versatile.

[0018] 3) The adjustable bending section's damping and telescopic mechanism creates an adaptive balance with the strap tension, allowing operators to achieve adaptive wrapping and fixing of ball bags of different diameters without precisely adjusting the extension amount, thus simplifying loading and unloading operations.

[0019] 4) The coupling of the arc-shaped guide rail and the connecting parts constitutes a pendulum passive vibration isolation system. By utilizing the balance between the weight of the golf bag and the tension of the connecting parts, it effectively isolates the lateral vibration during vehicle movement without the need for additional power or electronic control devices, protecting the golf bag and equipment from impact damage.

[0020] 5) Four connection options are provided: H-shaped connection structure, center tension node configuration, closed loop rope configuration, and modular reconfigurable connection structure. Operators can flexibly choose according to different driving conditions and usage requirements, taking into account structural simplicity, operational efficiency, and configuration flexibility.

[0021] 6) The length adjustment mechanism of the connecting parts can compensate for the asymmetric balance offset caused by the unequal mass of the two ball packs, ensuring that the system can maintain good vibration isolation performance under different load combinations. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of the integrated tubular frame; Figure 2 A three-dimensional structural diagram of the overall installation state of the ball bag fixing system; Figure 3 This is a partially enlarged schematic diagram of the double-layer linear guide rail assembly and the sliding clamping and locking assembly; Figure 4 A three-dimensional structural diagram of a single sliding clamping and locking component; Figure 5 A front view diagram showing two sets of sliding clamping and locking components fixing two ball bags side by side; Figure 6 A partial cross-sectional schematic diagram of the sliding boss mating with the sliding part and the elastic steel ball positioning mechanism; Figure 7 A schematic diagram of the tension indicator section and anti-slip textured layer of the strap; Figure 8 A three-dimensional structural diagram of an integrated tubular frame with passive vibration isolation function; Figure 9 This is a schematic diagram showing the overall installation status of the double-layer arc-shaped guide rail assembly, the sliding clamping assembly, and the connecting parts. Figure 10 This is a schematic diagram of an H-shaped interconnected structure. Figure 11 A schematic diagram of the central tension node configuration; Figure 12 This is a structural diagram of a closed-loop rope configuration; Figure 13 This is a structural diagram of a modular, reconfigurable, interconnected structure.

[0023] Figure label: 1. Integrated tubular frame; 11. Left upright; 12. Upper crossbeam; 13. Right upright; 14. Lower crossbeam; 15. Arc-shaped curved section; 2. Double-layer linear guide rail assembly; 21. Upper guide rail; 22. Lower guide rail; 211. Sliding part; 214. Scale; 215. Anodized hardened layer; 216. Positioning recess; 3. Sliding clamping and locking assembly; 31. Clamping block; 311. Sliding boss; 312. Elastic steel ball positioning mechanism; 32. Strap buckle mechanism; 321. Buckle seat; 322. Strap; 322. Tension indicator area. Section 323, Anti-slip textured layer 324, Adjustable bending section 33, Inner arc surface 331, Strip opening 332, Double-layer arc guide rail assembly 4, Upper arc guide rail 41, Lower arc guide rail 42, Arc sliding part 411, Arc top 412, Lowest position of arc end 413, Sliding clamping assembly 5, Connecting part 6, Vertical connecting part 61, Horizontal elastic connecting part 62, Center tension adjusting plate 63, Radial elastic rope 64, Closed loop elastic rope 65, Guide pulley 651, Elastic rope segment 66. Detailed Implementation

[0024] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Example

[0025] See Figures 1 to 7 This embodiment provides a golf cart rear rack bag securing system. Its core concept is to directly integrate the bag securing function into the frame structure, rather than treating the bag rack as a separate external accessory for the rear seat, as in existing technologies. The system mainly consists of three parts: a tubular integrated frame 1 fixedly connected to the golf cart chassis or rear body structure; a double-layer linear guide rail assembly 2 installed inside the tubular integrated frame 1; and multiple sliding clamping and locking assemblies 3 installed on the double-layer linear guide rail assembly 2.

[0026] See Figure 1 and Figure 2 The integrated tubular frame 1 is manufactured using a metal tube bending process, resulting in a closed, gate-shaped profile. Specifically, a continuous metal tube is bent to form a left upright 11, an upper crossbeam 12, a right upright 13, and a lower crossbeam 14. These four sections are connected end-to-end to form a closed rectangular ring-shaped skeleton. The upper crossbeam 12 and lower crossbeam 14 are horizontal extensions, while the left upright 11 and right upright 13 are vertical extensions. The sections are smoothly transitioned by curved sections 15. The lower ends of the left upright 11 and right upright 13 have mounting sections with bolt holes for securing the entire frame 1 to the golf cart's chassis or rear body structure. Thus, the integrated tubular frame 1 serves both as the structural load-bearing skeleton of the rear of the frame and as the mounting base for the golf bag mounting system.

[0027] See Figure 2 , Figure 3 and Figure 6 The double-layer linear guide rail assembly 2 is installed inside the tubular integrated frame 1. This assembly includes an upper guide rail 21 and a lower guide rail 22, which are horizontally fixed to the upper and lower regions of the frame 1, respectively, arranged in parallel. Both the upper and lower guide rails 21 and 22 are made of T-slot aluminum profiles with a T-shaped or I-shaped cross-section, forming a continuous sliding section 211 along the length of the guide rail. The upper and lower guide rails 21 and 22 constrain the ball pack at two height positions, at the top and bottom, respectively, thus securing the vertically placed ball pack firmly inside the frame 1 through this dual-point constraint. Furthermore, the front surfaces of the upper and lower guide rails 21 and 22 are engraved with equidistant scales 214 along their length, with a scale interval of 10mm and a thickened marking line every 50mm. The scale 214 allows operators to accurately read the spacing between the clamping blocks 31 when adjusting their sliding position. This facilitates repeated positioning for the same ball bag model and allows for adjustment based on preset spacing when quickly switching between multiple ball bags. Furthermore, the inner wall surface of the sliding part 211 is provided with an anodized hard layer 215, which reduces frictional resistance during the sliding of the clamping blocks 31 and improves the wear resistance of the inner wall of the sliding part.

[0028] See Figures 3 to 5 The sliding clamping and locking assembly 3 is used to achieve width adaptation of the ball bag and tool-free quick loading and unloading. Each sliding clamping and locking assembly 3 consists of three parts: a clamping block 31 embedded in the guide rail sliding part 211 and slidable along it; a strap buckle mechanism 32 mounted on the upper surface of the clamping block 31; and a curved adjustable section 33 extending outward from the upper part of the clamping block 31.

[0029] See Figure 4 and Figure 6The clamping block 31 is a one-piece molded metal or engineering plastic component, with a sliding boss 311 at its bottom that matches the sliding part 211. After the sliding boss 311 is inserted into the sliding part 211, the clamping block 31 can slide freely along the length of the guide rail, thereby adjusting the position of each clamping block 31 according to the actual width of the ball bag. The sliding boss 311 is provided with a screw-type locking knob, which passes through the sliding boss 311 and cooperates with the groove wall of the sliding part 211. When the locking knob is rotated, the pressure block at the bottom of the knob expands radially and presses against the inner wall of the sliding part 211, thereby locking the sliding boss 311 and the clamping block 31 above it simultaneously in the current position on the guide rail; rotating the locking knob in the opposite direction releases the pressure, and the clamping block 31 can continue to slide and adjust along the guide rail. Two clamping blocks 31 are installed on each of the upper guide rail 21 and the lower guide rail 22. A clamping block 31 on the upper guide rail 21 and a clamping block 31 on the lower guide rail 22 form a group. In each group, the upper and lower clamping blocks 31 are secured to the bag at two heights (top and bottom) using their respective strap buckle mechanisms 32, thus achieving stable fixation of a vertically placed bag. Two groups of clamping blocks 31 are provided on the upper and lower guide rails 21 and 22, arranged side-by-side along the length of the guide rails, respectively fixing two vertically placed bags. Furthermore, the bottom surface of the sliding boss 311 of the clamping block 31 is provided with an elastic steel ball positioning mechanism 312. The elastic steel ball positioning mechanism 312 includes a built-in spring and a steel ball, with the steel ball partially protruding from the bottom surface of the sliding boss 311 under the action of the spring force. The bottom of the sliding part 211 has multiple positioning recesses 216 at equal intervals along its length, and the spacing of the positioning recesses 216 corresponds to the scale spacing of the scale 214. When the clamping block 31 slides to a positioning recess 216, the steel ball is embedded in the positioning recess 216 under the action of spring force, producing a perceptible "click" tactile feedback, so that the clamping block 31 is initially positioned. The initial positioning force provided by the elastic steel ball positioning mechanism 312 is sufficient to prevent the clamping block 31 from accidentally slipping during the strapping operation, but it can be easily overcome by manually applying an appropriate horizontal pushing force to continue sliding and adjusting, thus achieving a balance between ease of operation and positioning stability. After the clamping block 31 has slid to the target position, the operator can tighten the locking knob to securely lock the clamping block 31.

[0030] See Figure 3 and Figure 4The adjustable bending section 33 is retractable and mounted on the upper part of the clamping block 31. It has an overall arc-shaped, plate-like or shell-like structure and can be extended or retracted relative to the clamping block 31 along its extension direction. A damping engagement structure is provided between the adjustable bending section 33 and the clamping block 31. This damping engagement structure provides moderate sliding friction resistance, allowing the adjustable bending section 33 to hold itself in place after being extended to any position, without the need for an additional independent locking mechanism. The inner arc surface 331 of the adjustable bending section 33 faces the side of the golf bag, providing arc-shaped wrapping and support for the side of the golf bag, increasing the contact area with the bag and preventing wear or deformation of the bag surface. Furthermore, the end of the adjustable bending section 33 is provided with a strip-shaped opening 332 that runs through the width direction. The strap 322 passes through the strip-shaped opening 332 and wraps around the surface of the ball bag. Thus, the adjustable bending section 33 guides and limits the strap 322, so that the strap 322 always fits the side arc of the ball bag during the tightening process, preventing the strap from slipping or shifting.

[0031] An adaptive balance mechanism is formed between the damping extension characteristics of the adjustable bending section 33 and the tension of the strap 322. Specifically, the operator can roughly pull the adjustable bending section 33 to a suitable extension length according to the outer diameter of the golf bag without precise control of the extension amount. When the strap 322 is tightened, if the extension length of the adjustable bending section 33 is slightly longer than the outer diameter of the golf bag, the tension of the strap 322 will act on the adjustable bending section 33, causing it to undergo a moderate arc deformation to fit more closely to the surface of the golf bag; when the tension further increases and exceeds the damping holding force, the adjustable bending section 33 will automatically retract a distance into the clamping block 31 under the action of the tension until the elastic restoring force, damping holding force of the adjustable bending section 33 and the tension of the strap 322 reach mechanical balance. At this time, the adjustable bending section 33 just holds the golf bag tightly with an appropriate wrapping arc and contact pressure. Thus, the damping extension mechanism of the adjustable bending section 33 and the tension of the strap 322 work together to achieve adaptive wrapping and fixing of ball bags of different diameters. Operators do not need to repeatedly adjust the extension of the adjustable bending section 33, simplifying the ball bag unloading operation.

[0032] See Figure 4 , Figure 5 and Figure 7The strap buckle mechanism 32 is installed on the upper surface of the clamping block 31. The strap buckle mechanism 32 includes a buckle seat 321 and a strap 322. The buckle seat 321 is a metal holder fixed to the clamping block 31, and its top is equipped with a flip-up clamping cover. The strap 322 is a flexible fabric strap. The strap 322 extends from one end of the buckle seat 321, passes through the strip-shaped opening 332 at the end of the adjustable bending section 33, wraps around the surface of the ball bag, and then returns from the other end of the buckle seat 321. After the operator passes the strap 322 through the buckle seat 321, flipping the clamping cover clamps and locks the strap 322, allowing it to encircle the ball bag via the arc-shaped guide of the adjustable bending section 33 and firmly bind it to the clamping block 31. To release the strap, simply lift the clamping cover; the operation is simple and quick.

[0033] See Figure 7 Furthermore, the middle section of the strap 322 is provided with a tension indicator section 323, which is a color gradient mark pre-printed along the width direction on the surface of the strap 322. When the strap 322 is in a naturally relaxed state, the mark displays the first color (e.g., green). As the strap 322 is tightened, the fabric fibers elongate slightly under tension, and the mark pattern is correspondingly stretched, displaying a second color (e.g., yellow) and a third color (e.g., red) range. When tightening the strap 322, the operator can intuitively judge whether the current strap tension is within a reasonable range by observing the color change of the tension indicator section 323: a green range indicates insufficient tension and the bag may be loose; a yellow range indicates moderate tension and reliable fixation; a red range indicates excessive tension and a risk of squeezing the bag. Thus, the tension indicator section 323 provides the operator with quantitative tension feedback, avoiding the problem of improper bag fixation caused by blindly tightening based on experience. In addition, the inner surface of the strap 322, which is the side that contacts the bag, is provided with an anti-slip textured layer 324. The anti-slip textured layer 324 is composed of multiple parallel silicone ridges with a height of 0.5 to 1 mm and a spacing of 3 to 5 mm. The anti-slip textured layer 324 increases the static friction coefficient between the strap 322 and the outer skin of the bag, effectively preventing the bag from slipping along the strap direction after the strap is tightened.

[0034] See Figure 2 and Figure 5This system can simultaneously fix two vertically placed golf bags side by side. Two clamping blocks 31 are installed on each of the upper guide rail 21 and the lower guide rail 22. One clamping block 31 on the upper guide rail 21 and a corresponding clamping block 31 on the lower guide rail 22 form a group, for a total of two groups. In each group, the upper and lower clamping blocks 31 are positioned at the upper and lower heights of the golf bag respectively, using their respective straps 322 to wrap around and secure the bag. The two groups are arranged side by side along the length of the guide rails, fixing the two golf bags respectively. In actual use, the operator first slides each clamping block 31 to a suitable position along the upper and lower guide rails 21 and 22, according to the width of the golf bag and referring to the scale 214 on the guide rail. During the sliding process, the elastic steel ball positioning mechanism 312 generates tactile feedback each time it passes a positioning recess 216, assisting the operator in precise positioning. After reaching the target position, the locking knob is tightened to firmly lock the clamping block 31. Then, roughly pull the adjustable section 33 out to the appropriate extension length according to the outer diameter of the bag. Next, pass the strap 322 out from one end of the buckle seat 321, through the strip opening 332 at the end of the adjustable section 33, around the surface of the bag, and back through the other end of the buckle seat 321. Flip the clamping cover to clamp and lock the strap 322. As the strap 322 is gradually tightened, the adjustable section 33 automatically adjusts to the optimal wrapping arc under the combined action of the strap tension and its own damping force. The operator observes the color change of the tension indicator section 323 on the strap 322. Once the tension is confirmed to be in the moderate yellow range, the tightening operation is complete. Repeat the above operation for the second bag to complete the side-by-side vertical fixation of the two bags. Example

[0035] See Figures 1 to 13 This embodiment provides a golf cart rear rack bag fixing system with passive vibration isolation and coupling constraint. The structure and working principle of the tubular frame integrated frame 1, the clamping block 31 and its sliding boss 311, the elastic steel ball positioning mechanism 312, the flexible adjustable section 33 (including the inner arc surface 331 and the strip opening 332), and the strap buckle mechanism 32 (including the buckle seat 321, the strap 322, the tension indicator section 323 and the anti-slip textured layer 324) in this embodiment are the same as those in Embodiment 1, and will not be repeated here. The main differences between this embodiment and Embodiment 1 are as follows: First, the double-layer guide rail assembly is replaced by the double-layer linear guide rail assembly 2 in Embodiment 1, and the double-layer arc-shaped guide rail assembly 4 is replaced by the double-layer arc-shaped guide rail assembly 4, with the guide rail having an arc-shaped curve that is high in the middle and low at both ends; Second, the locking knob between the clamping block 31 and the arc-shaped guide rail is removed and replaced with a non-locking sliding fit to form a sliding clamping assembly 5; Third, a connecting member 6 is added between the two sets of sliding clamping assemblies 5. The connecting member 6 not only serves as an auxiliary constraint, but is also the core force-bearing component that keeps the two balls stable at a position slightly above the arc.

[0036] See Figure 8 and Figure 9 The double-layer arc-shaped guide rail assembly 4 is installed inside the tubular integrated frame 1, including an upper arc-shaped guide rail 41 and a lower arc-shaped guide rail 42. These are fixed to the upper and lower regions of the frame 1 respectively, arranged in parallel and maintaining a vertical correspondence. Both the upper arc-shaped guide rail 41 and the lower arc-shaped guide rail 42 are made of T-shaped aluminum profiles with a T-shaped or I-shaped cross-section, forming two symmetrical arc-shaped sliding sections 411 along the length of the guide rail. The highest point of the middle section forms the arc apex 412, and the lowest point of the end forms the arc end lowest position 413. The arc-shaped sliding sections 411 of the upper arc-shaped guide rail 41 and the lower arc-shaped guide rail 42 use the same radius of curvature, ensuring that the clamping blocks 31 corresponding to the positions on the upper and lower guide rails are always in the same vertical plane at any given time. This guarantees that the vertically placed ball bag is always coplanarly constrained at both the upper and lower height positions, preventing tilting due to inconsistent upward and downward sliding amounts.

[0037] See Figure 9The two ball bags are not positioned at the lowest point 413 of the arc on the curved sliding part 411, but rather slightly above the sides of the apex 412. Because the curved sliding part 411 has a downward slope on both sides of the apex 412, each ball bag and its clamping block 31 tend to slide outwards along the arc (i.e., towards the lowest point 413) under gravity, meaning the two ball bags tend to move away from each other under gravity. To counteract this tendency and establish a stable working position, the two sets of sliding clamping components 5 are connected by a connector 6. The tension of the connector 6 along the arc direction exerts a restraining force that pulls the two ball bags closer together, precisely counteracting the downward component of gravity of each ball bag. When the tension of the connector 6 and the component of gravity of each ball bag along the arc direction reach equilibrium, the two ball bags are stably stationed at an equilibrium position slightly above the sides of the apex 412. The above equilibrium analysis is based on the ideal case where the two ball bags have equal mass. When the two golf bags have different masses, since the tension applied by the connecting member 6 to both sides is equal in magnitude but opposite in direction, and the gravitational components of the two golf bags sliding down the arc surface are unequal due to their different masses, the two golf bags will no longer be symmetrically positioned on either side of the arc apex 412. Instead, they will shift as a whole towards the side of the heavier golf bag—the heavier golf bag will be positioned at a lower position with a steeper arc slope, while the lighter golf bag will be pulled towards a higher position closer to the arc apex 412, until the gravitational components on both sides and the tension of the connecting member 6 reach mechanical equilibrium again. This asymmetrical equilibrium position is still stable, and the system will not lose its fixing function due to the mass difference. However, the different local slopes of the arc surface where the two golf bags are located will lead to differences in their equivalent restoring force gradients, resulting in asymmetrical vibration isolation response characteristics—the side with the heavier golf bag will have a stronger restoring force and a smaller vibration amplitude, while the side with the lighter golf bag will have the opposite. To compensate for the effects of the above-mentioned mass difference, a length adjustment mechanism can be provided on the connecting member 6, so that the effective length of the connecting member 6 connected to the clamping blocks 31 on both sides can be adjusted independently. Specifically, when the two golf bags have unequal masses, the operator can shorten the effective length of the connector 6 on the side of the heavier golf bag, generating greater pretension on that side and pulling the heavier golf bag back towards the apex 412. Simultaneously, the effective length of the lighter golf bag side can be appropriately lengthened to reduce its pretension, thereby bringing the two golf bags back to a symmetrical position on both sides of the apex 412. This length adjustment can be achieved by adding a locking length fixing component to the connector 6 or using a ratchet-type tightener. The operator only needs to make a one-time adjustment based on the actual offset after installing the golf bags.

[0038] The radius of curvature R of the arc-shaped sliding part 411 directly determines the natural frequency of the pendulum vibration isolation of the fixed golf bag. For example, in this embodiment, the equivalent radius of curvature R of the arc-shaped sliding part 411 is 300-500mm. According to the well-known formula for the natural frequency of a simple pendulum, f0 = (1 / 2π)√(g / R), the corresponding natural vibration frequency is 0.70-0.91Hz. The lateral disturbance frequency of the road surface commonly encountered during the actual driving of a golf cart is generally 2-15Hz, which is much higher than the above natural frequency. Therefore, the fixed golf bag is always within the effective vibration isolation frequency band of the pendulum vibration isolation system, and the response amplitude of the golf bag to the lateral vibration of the frame is greatly attenuated. The height difference between the arc apex 412 of the arc-shaped sliding part 411 and the lowest point 413 of the arc end is 35-65mm. This height difference provides sufficient gravity sliding component for the golf bag to establish mechanical balance with the connecting member 6, and avoids excessive tension on the connecting member 6 due to excessive height difference. The inner wall surface of the arc-shaped sliding part 411 is hardened and has an anodized hard layer, so that the static friction force is just enough to lock the clamping block 31 under slight vibration and allow it to slide under larger disturbance. Similar to Embodiment 1, the front surface of the arc-shaped guide rail is also engraved with an arc-shaped guide rail scale, which is convenient for operators to refer to and adjust during initial installation or when changing the ball bag model.

[0039] The double-layer arc-shaped guide rail assembly 4 is provided with end buffer limiters at both ends. The end buffer limiters are fixedly installed inside both ends of the arc-shaped sliding part 411.

[0040] See Figure 4 and Figure 6 Unlike the sliding clamping and locking assembly 3 in Embodiment 1, the sliding boss 311 of the sliding clamping assembly 5 in this embodiment does not have a locking knob or is not locked. That is, the clamping block 31 and the arc-shaped sliding part 411 always maintain an unlocked, slidable state. This unlocked engagement is a prerequisite for realizing the pendulum vibration isolation function. The bottom contour of the sliding boss 311 is a short straight section along the length of the guide rail, and its length does not exceed 1 / 5 of the chord length of the minimum curvature segment in the arc-shaped sliding part 411, so as to ensure that the sliding boss 311 will not get stuck when sliding along the curve in the arc-shaped sliding part 411. Since the working position of the clamping block 31 is located on both sides of the arc apex 412, there is a certain angle between the local tangent of the arc surface and the horizontal plane. Therefore, the sliding boss 311 is connected to the clamping block 31 via a spherical joint or an arc-shaped hinge joint, and may be equipped with a restoring elastic element to allow the clamping block 31 to automatically return to a horizontal position when no external force is applied, or it may be locked by a locking element to ensure that the ball bag is always fixed in a vertical state. This angle-adaptive structure is a conventional mechanical design method in this field.

[0041] When the vehicle experiences lateral vibration, the two ball bags and their clamping block 31, acting as an integral inertial unit coupled by the connecting member 6, undergo relative sliding in the opposite direction to the arc-shaped sliding part 411 that moves with the frame. This relative sliding consumes the impact energy that would have directly acted on the ball bags, and also converts some of the vibration energy into heat energy through the sliding friction between the sliding boss 311 and the arc-shaped sliding part 411, thus effectively isolating the fixed ball bags from vibration. After the vibration ends, the tension of the connecting member 6 and the downward component of gravity return to equilibrium, and the two ball bags automatically return to their original equilibrium positions slightly above the sides of the arc apex 412.

[0042] The connector 6 is a detachable flexible rope, elastic band, or semi-rigid link, which is connected to preset anchor points on the two sets of sliding clamping assemblies 5. The anchor points are located on the clamping block 31. The basic mechanical function of the connector 6 is to apply a restraining force that pulls the two bags closer together along the arc surface of the arc sliding part 411, which balances the downward gravity component of each bag, thereby maintaining the two bags in the designed working position slightly above the arc apex 412. Based on this basic function, the specific layout topology of the connector 6 determines the constraint characteristics of the system in different directions. Geometrically, the connection direction of the connector 6 between the two bags can be divided into three basic topological directions: horizontal (connecting anchor points at corresponding heights of the two bags along the tangent of the arc guide rail), vertical (connecting between upper and lower anchor points of the same bag), and diagonal (diagonally connecting one anchor point of one bag to another anchor point of another bag). The following four optional engineering configurations are based on different combinations of the above basic topological directions. Operators can choose one of them to implement according to the actual driving conditions.

[0043] Option 1: H-shaped connection structure See Figure 10In this configuration, the connecting member 6 includes two vertical connecting members 61 and one horizontal elastic connecting member 62. The two vertical connecting members 61 are vertically positioned on one side of each ball bag. The upper end of each vertical connecting member 61 is connected to the connecting anchor point of the upper sliding clamping assembly 5 of the ball bag on that side, and the lower end is connected to the connecting anchor point of the lower sliding clamping assembly 5 of the ball bag on that side. The vertical connecting members 61 are made of semi-rigid materials, such as nylon rods or fiberglass-reinforced elastic rods. Their function is to constrain the consistent sliding of the two clamping blocks 31 of the same ball bag on the arc-shaped sliding part 411, preventing the ball bag from vertically shifting or tilting due to asynchronous upward and downward sliding during braking or climbing. The horizontal elastic connecting member 62 connects the middle sections of the two vertical connecting members 61, forming an "H" shaped topology. The horizontal elastic connector 62 is made of elastic rope or steel wire rope with built-in tension spring. Its elastic stiffness is designed such that, in static equilibrium, the tension generated by the pre-tension deformation of the spring exactly balances the gravitational sliding component of each of the two ball packs along the arc surface; in dynamic vibration, it allows for an elastic relative displacement of 5-15 mm between the two ball packs. This configuration combines vertical anti-slip constraint and horizontal anti-slip constraint, has a simple structure and few parts, and is suitable for application scenarios with high requirements for ease of loading and unloading and moderate road conditions.

[0044] Option 2: Center tension node configuration See Figure 11 In this configuration, the connector 6 includes a central tension adjusting disc 63 and four radial elastic ropes 64. The central tension adjusting disc 63 is a detachable disc-shaped component, located at the center between the two balls. Four rope anchoring holes are evenly distributed circumferentially on the disc surface, and a tension adjusting knob is located in the center of the disc. The four radial elastic ropes 64 originate from the four anchoring holes of the central tension adjusting disc 63 and extend to the four connecting anchor points on the clamping blocks 31, forming a radial topology with the central disc 63 as the converging node. The tension adjusting knob simultaneously tensions or relaxes the four elastic ropes 64 via an internal cam mechanism, allowing the operator to uniformly adjust the preload of all connectors by rotating only one knob. Because each of the four radial elastic ropes 64 contains a diagonal component, it simultaneously provides horizontal anti-slip constraint, vertical anti-lateral constraint, and diagonal anti-torsional constraint, eliminating the need for layered connectors in different directions. During assembly and disassembly, simply detach the center tension adjustment disc 63 from any of the elastic ropes 64 to release all connection constraints at once. This configuration integrates multi-directional constraint functions and preload adjustment functions into a single center node, resulting in high operational efficiency and suitability for applications requiring frequent adjustments to connection preload.

[0045] Option 3: Closed-loop rope configuration See Figure 12In this configuration, the connecting element 6 is a continuous elastic rope 65 connected end to end. The elastic rope 65 passes sequentially through the four connecting anchor points on the clamping blocks 31, forming a closed loop. Each connecting anchor point is equipped with a guide pulley 651 or a low-friction arc-shaped guide hole, allowing the elastic rope 65 to slide freely at each anchor point. The total circumference of the closed loop rope 65 is slightly less than the total geometric path length between the four anchor points in the installed state, thereby generating overall rope pretension to maintain the balanced position of the two balls on the arc-shaped sliding part 411.

[0046] The core feature of this configuration lies in its adaptive load balancing mechanism. When one of the balls experiences significant slippage along the curved surface due to lateral impact, the tension in the rope segment on the side containing the ball increases. This increased tension is transmitted to adjacent rope segments via guide pulleys 651 at the anchor points, automatically redistributing the impact load among the four anchor points of the closed loop. Unlike independent connectors that transmit force only between two points, this closed-loop configuration achieves load balancing across four points. Simultaneously, because the total elongation of the elastic rope 65 is shared by the four rope segments in the loop, the local elastic deformation of each rope segment is smaller, resulting in more controllable and uniform overall system stiffness. This configuration has the fewest parts (only one rope and four guides), offers the strongest adaptability, and is suitable for driving scenarios requiring the highest load balancing performance. Furthermore, the closed-loop configuration outperforms other configurations in situations where the two ball packs have unequal masses due to its adaptive load balancing characteristics: when the heavier ball pack slides outward a greater distance, the tension of the rope segment on its side increases accordingly. This increased tension is automatically transmitted to the entire loop through the guide pulley 651, allowing the system to automatically approach a new equilibrium position within a certain mass difference range without manual intervention.

[0047] Option 4: Modular Reconfigurable Structure See Figure 13 In this configuration, each clamping block 31 has three connecting anchor points spaced apart along its width (denoted as upper anchor point, middle anchor point, and lower anchor point, respectively), and each connecting anchor point is equipped with a quick-release hook. The connecting component 6 consists of multiple elastic rope segments 66 with hook ends that match the quick-release hooks at both ends. The operator can attach the hook ends of the elastic rope segments to different combinations of anchor points according to different driving conditions, thereby selecting the connection topology mode.

[0048] Specifically, the selectable connection topologies include, but are not limited to: horizontally connecting the elastic rope segments 66 to anchor points at corresponding heights of two ball packs to form a horizontal connection topology, providing the most direct anti-slip constraint; vertically connecting the elastic rope segments 66 to anchor points on the upper and lower layers of the same ball pack to form a vertical connection topology, providing vertical anti-slip constraint; diagonally connecting the elastic rope segments 66 to anchor points on different height layers of different ball packs to form a cross connection topology, providing anti-torsional constraint; or superimposing and combining the above topologies to obtain multi-directional composite constraints. Each elastic rope segment 66 can be quickly disassembled and reattached by pressing and releasing the quick-release hooks, realizing on-site reconfigurability of the connection topology. This configuration gives the operator the choice of connection method, has the highest configuration flexibility, and is suitable for use scenarios with variable road conditions and experienced operators.

[0049] V. Configuration and Operation of Connecting Components In actual use, the operator first pushes the two sets of clamping blocks 31 along the arc-shaped sliding part 411 to the designed working positions on both sides of the arc apex 412, confirming that the clamping blocks 31 have entered the initial stopping position. Then, following the method described in Example 1, the adjustable bending section 33 is pulled out and the ball bag is tightened and fixed by the strap buckle mechanism 32, and the tension indicator section 323 is observed to confirm that the tension is in the yellow moderate range. The above operation is repeated for the second ball bag, and finally, any of the above-mentioned structural type installation connectors 6 are selected according to the driving conditions. After the connector 6 is installed, its tension and the downward component of gravity of the ball pack automatically form a mechanical balance. The two ball packs are then stably constrained to the working position slightly above the sides of the arc apex 412. Without any additional adjustment, the system automatically enters the passive vibration isolation working state: when the vehicle is stationary or traveling at a constant speed, the clamping block 31 is stably stationary in the designed working position by the initial positioning force of the arc-shaped positioning recess and the balancing tension of the connector 6; when the vehicle encounters lateral bumps, cornering tilts, or passes over speed bumps, the two ball packs and the clamping block 31, as an integral inertial unit coupled by the connector 6, generate an arc-shaped slip relative to the frame. Through the two mechanisms of displacement decoupling and sliding friction energy dissipation, the passive vibration isolation protection of the ball packs is achieved, so that the two ball packs always maintain a stable and low-impact load state throughout the entire driving process.

[0050] The above description is merely a specific example of the present invention and does not constitute any limitation on the present invention. Obviously, those skilled in the art, after understanding the content and principles of the present invention, may make various modifications and changes in form and detail without departing from the principles and structure of the present invention; however, these modifications and changes based on the spirit of the present invention are still within the scope of protection of the claims of the present invention.

Claims

1. A golf cart, comprising a chassis and a body structure, characterized in that... It also includes a ball bag securing system, which includes: The tubular frame integrated frame (1) is fixedly connected to the chassis or body structure and serves as both a structural load-bearing skeleton and a ball bag mounting base. The double-layer guide rail assembly is installed inside the tubular frame integrated frame (1) and includes two guide rails arranged in parallel, each guide rail having a sliding part extending along its length. At least one set of sliding clamping components is slidably mounted on the sliding part and configured to secure the ball bag by straps; Among them, the sliding clamping components corresponding to the positions on the two guide rails form a group, which fix the ball bag at two height positions at the top and bottom of the ball bag.

2. The golf cart according to claim 1, characterized in that... The double-layer guide rail assembly is a double-layer linear guide rail assembly (2), the sliding part is a linear sliding part (211), and the sliding clamping assembly is a sliding clamping locking assembly (3) that can be locked to the current position of the linear sliding part (211). The sliding clamping locking assembly (3) includes a clamping block (31), a flexible adjustable section (33) that is telescopically mounted on the clamping block (31) and self-holding by damping force, and a strap buckle mechanism (32) configured to clamp the strap (322) after it passes through the ball bag via the flexible adjustable section (33).

3. The golf cart according to claim 1, characterized in that... The ball bag fixing system includes at least two sets of the sliding clamping components; the double-layer guide rail assembly is a double-layer arc-shaped guide rail assembly (4), the sliding part is an arc-shaped sliding part (411) with a high middle and low ends, the highest position of the middle section forms an arc top (412), and the sliding clamping component is installed on the arc-shaped sliding part (411) in a non-locking and slidable state. It also includes a connector (6) connected between at least two sets of sliding clamping components, configured to apply a constraint force that pulls each set closer to the other, forming a mechanical balance with the downward component of the ball bag's weight along the arc surface, so that each set is stably stopped on both sides of the arc apex (412); when the vehicle vibrates, each set of sliding clamping components is coupled into an integral inertial unit through the connector (6), and slides in the opposite direction relative to the arc-shaped sliding part (411) to achieve passive vibration isolation.

4. A golf cart rear rack bag fixing system with passive vibration isolation function, characterized in that... ,include: A tubular integrated frame (1) is fixedly connected to the golf cart; The double-layer arc-shaped guide rail assembly (4) is installed inside the tubular frame integrated frame (1), including an upper arc-shaped guide rail (41) and a lower arc-shaped guide rail (42). Each arc-shaped guide rail is provided with an arc-shaped sliding part (411) that is high in the middle and low at both ends, and the highest position of its middle section forms the arc top (412). At least two sets of sliding clamping assemblies (5) are installed on the arc-shaped sliding part (411) in a non-locking and slidable state, each set being used to fix a ball bag; each set of sliding clamping assemblies (5) includes two clamping blocks (31) located on the upper arc-shaped guide rail (41) and the lower arc-shaped guide rail (42) respectively, a flexible adjustable section (33) installed on the clamping block (31) in a telescopic manner and self-holding by damping force, and a strap buckle mechanism (32) configured to clamp the strap (322) after it passes through the flexible adjustable section (33) and around the ball bag; the clamping block (31) is provided with a connecting anchor point; The connecting member (6) is connected between each group of sliding clamping components (5) and is configured to apply a constraint force that pulls each group closer to each other, forming a mechanical balance with the downward component of the ball bag's weight along the arc surface, so that each group is stably stopped on both sides of the arc top (412). When the vehicle vibrates, each set of sliding clamping components (5) and the connecting member (6) act as coupled inertial units and slide in the opposite direction relative to the arc-shaped sliding part (411) to achieve passive vibration isolation.

5. The system according to claim 4, characterized in that... The upper arc-shaped guide rail (41) and the lower arc-shaped guide rail (42) have the same radius of curvature in their arc-shaped sliding parts (411), so that the clamping blocks (31) corresponding to the positions on the upper and lower guide rails are in the same vertical plane at any time.

6. The system according to claim 4, characterized in that... The connecting member (6) includes two vertical connecting members (61) and one horizontal elastic connecting member (62). The two vertical connecting members (61) vertically connect the clamping blocks (31) on the upper arc-shaped guide rail (41) and the clamping blocks (31) on the lower arc-shaped guide rail (42) of each set of sliding clamping assemblies (5). The horizontal elastic connecting member (62) is connected between the two vertical connecting members (61) to form an H-shaped configuration.

7. The system according to claim 4, characterized in that... The connecting component (6) includes a central tension adjusting disc (63) and multiple radial elastic ropes (64). The central tension adjusting disc (63) is disposed between each group of sliding clamping components (5). Each radial elastic rope (64) extends from the central tension adjusting disc (63) to the connecting anchor point on each clamping block (31). The central tension adjusting disc (63) is provided with a tension adjusting knob for simultaneously adjusting the pretension of each radial elastic rope (64).

8. The system according to claim 4, characterized in that... The connecting member (6) is a closed elastic rope (65) connected end to end, which passes through the connecting anchor points on each clamping block (31) to form a closed loop. Each connecting anchor point is provided with a guide pulley (651) or an arc-shaped guide hole, so that the impact load is adaptively redistributed between each anchor point.

9. The system according to claim 4, characterized in that... Each clamping block (31) is provided with multiple connecting anchor points, and each connecting anchor point is provided with a quick-release hook. The connecting component (6) is a series of elastic rope segments (66) with hook ends at both ends. The field reconfigurability of the connection topology can be achieved by selecting different anchor point combinations.

10. A method for fixing and adjusting a ball bag using the system described in claim 4, characterized in that... This includes the following steps: At least two sets of sliding clamping components (5) are pushed along the arc-shaped sliding part (411) to the preset working positions on both sides of the arc top (412); On each set of sliding clamping components (5), the adjustable bending section (33) is pulled out to the appropriate extension length according to the outer diameter of the ball bag. The strap (322) is wrapped around the surface of the ball bag through the adjustable bending section (33) and then tightened and fixed by the strap buckle mechanism (32). The adaptive balance between the damping extension characteristics of the adjustable bending section (33) and the tension of the strap (322) is utilized to make the adjustable bending section (33) automatically adjust to fit the wrapping arc of the ball bag surface. Connectors (6) are installed between each group of sliding clamping components (5) so that the constraint force of the connectors (6) and the downward component of the gravity of each ball bag along the arc surface form a mechanical balance, and the system automatically enters the passive vibration isolation working state. When the two ball bags have different masses, the effective length of the connecting part (6) connected to the sliding clamping assembly (5) on both sides is adjusted so that the two ball bags are close to the symmetrical position on both sides of the arc apex (412).

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