Starting block convenient to maintain

Abstract

According to the starting block convenient to maintain, a stable three-dimensional limiting effect is formed between a pedal and an adhesive plate through a wedge-shaped embedding structure of a dovetail-shaped inserting groove and a trapezoid protruding strip, when an athlete pedals the starting block, self-locking type friction contact is generated between the inclined side wall of the trapezoid protruding strip and the inner wall of the dovetail groove, and the dovetail-shaped inserting groove and the trapezoid protruding strip are matched with each other. Transverse shearing force and longitudinal impact force are effectively resisted, and the problem of thread slipping caused by stress concentration in traditional bolt connection is solved; meanwhile, the vertical embedding direction of the insertion structure and the stress direction of the starting block form space complementation, so that the pedal assembly can still keep structural integrity when bearing high-strength pedaling actions, rapid blind insertion positioning can be achieved through the guide inclined faces of the trapezoidal protruding strips, the maintenance and disassembly time is remarkably shortened by being matched with a rapid disassembly mechanism, and the maintenance efficiency is improved. And the equipment maintenance efficiency is improved while the movement stability is ensured.

Description

An easy-to-maintain starting machine Technical Field

[0001] This utility model relates to the field of sports equipment technology, and in particular to a starting device that is easy to maintain. Background Technology

[0002] Starting blocks are crucial auxiliary equipment in sprint events in track and field, and their structural design directly affects athletes' starting stability and the fairness of the competition. Traditional starting blocks typically use an integrated welded or bolted structure, which, while ensuring basic strength, has significant drawbacks: First, after long-term use, wear and tear on the foot pedals (such as aging of the anti-slip rubber layer and deformation of the pedals) necessitates replacement of the entire unit, leading to high maintenance costs. Second, the equipment occupies a large space during transportation and storage, and cannot flexibly adjust the foot pedal spacing and angle according to athletes' foot sizes or competition venue conditions. Third, traditional connection methods rely on tools for disassembly and assembly, which is cumbersome, especially in high-frequency events, resulting in low equipment maintenance efficiency and potential delays in the competition process.

[0003] To address the aforementioned issues, existing improvement solutions primarily focus on optimizing specific functions. For example, some starting blocks employ a segmented main beam design, which, while foldable for storage, suffers from insufficient strength at the connection points, leading to loosening over prolonged use. Another solution utilizes spring hinges for pedal angle adjustment, but this is structurally complex and has a limited adjustment range. Furthermore, the foot pedal assembly is still mainly secured with screws, requiring individual bolt tightening during disassembly and assembly, which is time-consuming and prone to damaging the threads. More importantly, traditional anti-slip layers are directly adhered to the pedal surface, necessitating the removal of residual adhesive during replacement, which damages the pedal structure and increases maintenance difficulty. Clearly, existing technologies require further improvement and enhancement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a starting device that is easy to maintain, so as to solve the problems of high maintenance difficulty and high cost of the starting device in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a starting device that is easy to maintain, comprising a main beam and two sets of symmetrically arranged foot pedal assemblies. The main beam is provided with guide rail slots along its length, and the foot pedal assemblies are detachably installed in the guide rail slots via a quick-release mechanism. The foot pedal assembly includes a mounting bracket, a mounting pedal, and an adhesive plate. The top of the mounting pedal is provided with a dovetail-shaped insertion groove, and the bottom of the adhesive plate is provided with a matching trapezoidal protrusion. The trapezoidal protrusion is fitted into the dovetail-shaped insertion groove to form a plug-in connection.

[0006] In one embodiment of the present invention, the adhesive plate is fixed to the mounting pedal by screws. At least two screws are provided and are symmetrically distributed on both sides of the insertion slot, and the threaded portion of the screws is equipped with a spring washer.

[0007] In one embodiment of the present invention, the foot pedal assembly further includes a support plate, the bottom end of the mounting pedal is hinged to the mounting bracket, and the top end is connected to the mounting bracket through the support plate.

[0008] In one embodiment of this utility model, the mounting bracket is provided with a row of equidistant lateral positioning holes, and the support plate achieves tilt angle adjustment by engaging the lateral positioning holes at different positions.

[0009] In one embodiment of this utility model, the lateral positioning hole is an oblong hole, the long axis of which is consistent with the extension direction of the mounting bracket.

[0010] In one embodiment of the present invention, the quick-release mechanism includes a support rod and a hanging lug. The support rod is rotatably mounted on the mounting bracket, and the hanging lug is fixed at the end of the support rod. The support rod is engaged in one of the guide rail slots, and the hanging lug is locked inside the guide rail slot.

[0011] In one embodiment of the present invention, a gasket is further included, and the gasket is held between the mounting bracket and the side wall of the main beam.

[0012] In one embodiment of the present invention, a handle is fixed at the center of the main beam, and the surface of the handle is provided with anti-slip texture.

[0013] In one embodiment of the present invention, a front pad is fixed on the front side of the main beam along the length direction, and a rear pad is fixed on the rear side along the width direction; both the front pad and the rear pad are provided with an anti-slip rubber layer on their bottom surfaces.

[0014] As described above, the easy-to-maintain starting device of this invention has the following beneficial effects:

[0015] 1. Modular quick-release design improves maintenance efficiency. By setting guide rail slots on the main beam and using a quick-release mechanism to connect the foot pedal assembly, the foot pedal assembly can be quickly installed and removed. This detachable structure allows for component replacement or repositioning without the need for special tools, significantly reducing the complexity and time cost of equipment maintenance, and is especially suitable for rapid maintenance needs in high-frequency usage scenarios.

[0016] 2. Plug-in connection enhances structural stability. The pedal assembly uses a dovetail-shaped plug-in groove and trapezoidal protrusion for the connection between the pedal and the adhesive plate. This interlocking effect of the geometric shapes achieves dual fixation: longitudinal anti-slip: the beveled surface of the trapezoidal protrusion and the dovetail groove form a wedge fit, generating a self-locking effect under stress, effectively preventing pedal displacement along the direction of movement; lateral anti-separation: the tight fit between the protrusion and the groove avoids the loosening risk of traditional bolted connections, while also reducing the probability of structural failure due to metal fatigue.

[0017] 3. Layered structure optimizes force transmission. The adhesive plate, as an independent functional module, evenly transmits the pedal load to the mounting bracket via a plug-in structure, and then to the main beam guide rail via a quick-release mechanism. This layered load-bearing design clearly defines the force path for each component, ensuring both local connection strength and avoiding stress concentration, thereby extending the overall service life of the equipment.

[0018] 4. Standardized interface enhances adaptability. The standardized design of the guide rail slots and quick-release mechanism allows for interchangeable installation of pedal components of different specifications, providing expanded space for subsequent equipment upgrades or personalized modifications, while reducing the difficulty of spare parts inventory management. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a structural schematic diagram of the easy-to-maintain starting device provided by this utility model;

[0021] Figure 2 is a partial structural schematic diagram of the easy-to-maintain starting device provided by this utility model;

[0022] Figure 3 is a partial structural schematic diagram of the easy-to-maintain starting device provided by this utility model;

[0023] Figure 4 is an enlarged view of detail A in Figure 3.

[0024] Component designation explanation

[0025] 1. Main beam; 2. Pedal assembly; 21. Mounting bracket; 22. Mounting pedal; 23. Adhesive plate; 24. Insertion slot; 25. Trapezoidal protrusion; 26. Support plate; 27. Lateral positioning hole; 3. Guide rail slot; 4. Quick release mechanism; 41. Support rod; 42. Hanging lug; 5. Gasket; 6. Handle; 7. Front pad; 8. Rear pad. Detailed Implementation

[0026] This utility model provides a starting device that is easy to maintain. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. In the description of this utility model, it should be understood that the terms "up, down, left, right," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Please refer to Figures 1 to 4. This utility model provides a starting device that is easy to maintain, including a main beam 1 and two sets of foot pedal assemblies 2 arranged symmetrically. The main beam 1 is provided with a guide rail groove 3 along its length. The foot pedal assembly 2 is detachably installed in the guide rail groove 3 through a quick-release mechanism 4. The foot pedal assembly 2 includes a mounting bracket 21, a mounting pedal 22, and an adhesive plate 23. The top of the mounting pedal 22 is provided with a dovetail-shaped insertion groove 24, and the bottom of the adhesive plate 23 is provided with a matching trapezoidal protrusion 25. The trapezoidal protrusion 25 is fitted into the dovetail-shaped insertion groove 24 to form a plug-in connection. Understandably, the wedge-shaped interlocking structure of the dovetail-shaped insertion groove 24 and the trapezoidal protrusion 25 forms a stable three-dimensional limit between the pedal and the adhesive plate 23. Self-locking friction resists lateral shear force and longitudinal impact force, avoiding the thread stripping problem of traditional bolt connections. The insertion direction and the force direction are complementary, ensuring structural integrity. Furthermore, the guide slope of the trapezoidal protrusion 25 enables rapid blind insertion positioning, significantly shortening assembly and disassembly time in conjunction with the quick-release mechanism 4, balancing motion stability and maintenance efficiency. In addition, another type of dovetail-shaped insertion groove 24 with different inclination angles is provided. When paired with a suitable trapezoidal protrusion 25, the two sides of the trapezoidal protrusion 25 achieve a bidirectional wedge-shaped fit with the dovetail-shaped inner wall of the insertion groove 24, ensuring vertical load-bearing stability while providing lateral anti-detachment functionality through the dimensional difference between the upper and lower bases of the trapezoidal protrusion 25. This type of combined structure is suitable for modular connection scenarios requiring frequent assembly and disassembly. Its self-locking characteristics effectively prevent vibration-induced loosening, and the machining tolerance compatibility of the trapezoidal protrusion is superior to that of traditional rectangular protrusions.

[0028] In another feasible embodiment, the adhesive plate 23 directly covers the mounting pedal 22, and the size of the adhesive plate 23 is larger than that of the mounting pedal 22. The edge of the adhesive plate 23 wraps around the side wall of the mounting pedal 23 and is then fixed by screws. Specifically, the adhesive plate 23 is made of a flexible and wear-resistant material (such as rubber or silicone), and its edge extends to the side wall of the mounting pedal 22 to form a wrapping structure, enhancing the sealing performance through a tight fit. The screw passes through a pre-set through hole in the adhesive plate 23 and is screwed into the threaded hole of the mounting pedal 22, achieving dual fixation: on the one hand, the molecular adsorption force of the adhesive layer provides basic adhesion, and on the other hand, the mechanical clamping force of the screw prevents displacement.

[0029] The adhesive plate 23 is fixed to the mounting pedal 22 by screws. At least two screws are provided and symmetrically distributed on both sides of the insertion slot 24, and each screw's threaded portion is equipped with a spring washer. The symmetrical distribution of screws on both sides of the insertion slot 24 and the presence of spring washers enhance the connection reliability between the adhesive plate 23 and the pedal through uniform force distribution. The spring washers absorb vibration energy, preventing the screws from loosening under high-frequency impacts and extending thread life.

[0030] The foot pedal assembly 2 also includes a support plate 26. The bottom end of the mounting pedal 22 is hinged to the mounting bracket 21, and the top end is connected to the mounting bracket 21 via the support plate 26. The mounting bracket 21 has a row of equidistantly arranged lateral positioning holes 27. The support plate 26 can be tilted by engaging the lateral positioning holes 27 at different positions. By engaging the lateral positioning holes 27 at different positions to adjust the tilt angle of the support plate 26, athletes can flexibly adjust the pedal tilt angle according to their personal habits or training needs, enhancing the ergonomic adaptability of the starting device. Specifically, the lateral positioning holes 27 are oblong holes, with their long axis aligned with the extension direction of the mounting bracket 21. The oblong hole's long axis aligned with the extension direction of the mounting bracket 21 allows the support plate 26 to move slightly in a specific direction during adjustment, avoiding jamming and improving the smoothness of adjustment. At the same time, the oblong hole structure enhances the deformation resistance of the hole edges.

[0031] The quick-release mechanism 4 includes a support rod 41 and a lug 42. The support rod 41 is rotatably mounted on the mounting bracket 21. The lug 42 is fixed to the end of the support rod 41. The support rod 41 is engaged in one of the guide rail slots 3, and the lug 42 is locked inside the guide rail slot 3. The quick-release mechanism 4, consisting of the lug 42 and the support rod 41, allows for quick locking or releasing of the pedal assembly 2 by rotation, simplifying the installation process. The engagement between the lug 42 and the guide rail slot 3 provides stable load-bearing capacity and prevents accidental dislocation. Specifically, the mounting bracket 21 has an axial through hole, through which the support rod 41 rotatably passes and forms a rotating joint with the bracket. The support rod 41 adopts a stepped shaft structure design, and its end is fixed to the lug 42 by interference fit or threaded fastening. The main body of the lug 42 is an arc-shaped plate structure, and its free end has a wedge-shaped engagement part that matches the guide rail slot 3.

[0032] It also includes a gasket 5, which is held between the mounting bracket 21 and the side wall of the main beam 1. The gasket 5 fills the gap between the mounting bracket 21 and the side wall of the main beam 1, reducing frictional loss between them. At the same time, it compensates for assembly tolerances through elastic deformation, improving the smoothness of operation and long-term durability of the quick-release mechanism 4.

[0033] A handle 6 is fixed at the center of the main beam 1, and the surface of the handle 6 is provided with anti-slip texture. The handle 6 and the anti-slip texture design make it easy to grip and carry the starting device with one hand, reducing the difficulty of transportation. The anti-slip texture ensures that it can still provide reliable grip force in wet or sweaty conditions, improving operational safety.

[0034] A front pad 7 is fixed along the length of the front side of the main beam 1, and a rear pad 8 is fixed along the width of the rear side; both the front pad 7 and the rear pad 8 have an anti-slip rubber layer on their bottom surfaces. The anti-slip rubber layer of the front pad 7 and the rear pad 8 increases the friction of the contact surface, preventing the starting device from sliding back and forth when the athlete pushes off, ensuring the stability of the starting action. At the same time, the rubber layer can absorb the ground reaction force and reduce equipment vibration.

[0035] In summary, the easy-to-maintain starting device of this invention, through the cooperative structure of the dovetail-shaped insertion groove 24 and the trapezoidal protrusion 25, forms an efficient and stable plug-in connection between the mounting pedal 22 and the adhesive plate 23. The geometry of the dovetail groove and the inclined surface contact characteristics of the trapezoidal protrusion 25 create a wedge-shaped self-locking effect when they are engaged. This effectively prevents relative slippage or separation between the pedal and the adhesive plate 23 when subjected to the instantaneous impact force of the athlete's start, ensuring the dynamic stability of the connection structure. Simultaneously, the plug-in design eliminates the need for traditional fastening components, simplifying the assembly process and reducing the risk of component wear. The surface contact characteristics of the trapezoidal protrusion 25 and the dovetail groove also evenly distribute the load at the contact interface between the adhesive plate 23 and the pedal, avoiding localized deformation or damage caused by stress concentration, thereby improving the overall durability and ease of maintenance. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0036] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A maintenance-friendly starting jack, comprising a main beam (1) and two symmetrically arranged sets of foot pedal assemblies (2), characterized in that: The main beam (1) is provided with a guide rail groove (3) along its length. The foot pedal assembly (2) is detachably installed in the guide rail groove (3) through a quick-release mechanism (4). The foot pedal assembly (2) includes a mounting bracket (21), a mounting pedal (22), and an adhesive plate (23). The top of the mounting pedal (22) is provided with a dovetail-shaped insertion groove (24), and the bottom of the adhesive plate (23) is provided with a matching trapezoidal protrusion (25). The trapezoidal protrusion (25) is fitted into the dovetail-shaped insertion groove (24) to form a plug-in connection.

2. The easy-to-maintain starting device according to claim 1, characterized in that, The adhesive plate (23) is fixed to the mounting pedal (22) by screws. There are at least two screws, which are symmetrically distributed on both sides of the insertion slot (24), and the threaded part of the screw is equipped with a spring washer.

3. The easy-to-maintain starting device according to claim 1, characterized in that, The pedal assembly (2) also includes a support plate (26), the bottom end of the mounting pedal (22) is hinged to the mounting bracket (21), and the top end is connected to the mounting bracket (21) through the support plate (26).

4. The easy-to-maintain starting device according to claim 3, characterized in that, The mounting bracket (21) is provided with a row of equidistant lateral positioning holes (27), and the support plate (26) can adjust the tilt angle by engaging the lateral positioning holes (27) at different positions.

5. The easy-to-maintain starting device according to claim 4, characterized in that, The lateral positioning hole (27) is an oblong hole, and its long axis is consistent with the extension direction of the mounting bracket (21).

6. The easy-to-maintain starting device according to claim 1, characterized in that, The quick-release mechanism (4) includes a support rod (41) and a hanging lug (42). The support rod (41) is rotatably mounted on the mounting bracket (21). The hanging lug (42) is fixed at the end of the support rod (41). The support rod (41) is engaged in one of the guide rail slots (3). The hanging lug (42) is locked inside the guide rail slot (3).

7. The easy-to-maintain starting device according to claim 6, characterized in that, It also includes a gasket (5), which is held between the mounting bracket (21) and the side wall of the main beam (1).

8. The easy-to-maintain starting device according to claim 1, characterized in that, A handle (6) is fixed at the center of the main beam (1), and the surface of the handle (6) is provided with anti-slip texture.

9. The easy-to-maintain starting device according to claim 1, characterized in that, The main beam (1) has a front pad (7) fixed along the length direction on the front side and a rear pad (8) fixed along the width direction on the rear side; the bottom surfaces of the front pad (7) and the rear pad (8) are both provided with anti-slip rubber layers.

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