Folding rear rack

Abstract

This disclosure provides a folding rear rack, comprising: a platform, a base, and a rocker arm assembly. The rocker arm assembly is pivotally mounted between the platform and the base, allowing the platform to be adjusted relative to the base between a forward position and a rear position. The rocker arm assembly includes two first rocker arms and two second rocker arms pivotally mounted between the platform and the base. In the forward position, the first and second rocker arms abut against each other, bringing the platform closer to the front of the locomotive. In the rear position, the first and second rocker arms abut against each other, moving the platform away from the front of the locomotive. Therefore, regardless of whether the platform is in the forward or rear position, it receives good support, is very stable in use, and has an extended service life.

Description

Folding rear rack Technical Field

[0001] This disclosure relates to a folding rear rack, and more particularly to a folding rear rack that can be installed at the rear of a locomotive. Prior Technology

[0002] Among current modes of transportation, motorcycles are quite popular and highly flexible. However, their loading space is limited, so many consumers will add a cargo box to the rear of the motorcycle to increase its cargo capacity.

[0003] However, most storage racks on the market are fixed designs and cannot be moved. To overcome the shortcomings of fixed storage racks, there is also a sliding rail design that allows the racks to move back and forth, making it easier for riders to adjust the position of the racks.

[0004] However, the sliding rail design, which allows for forward and backward movement, is prone to loosening after prolonged use, leading to structural instability and making it unsuitable for loading heavy objects. Furthermore, the sliding rail design reduces the space available for the rear seat, sacrificing passenger comfort. Therefore, there is still a need to improve the rear rack of the locomotive. Summary of the Invention

[0005] This disclosure provides a folding rear rack installed at the rear of a locomotive. The folding rear rack includes a platform, a base, and a swing arm assembly pivotally mounted between the platform and the base, allowing the platform to be adjusted relative to the base between a forward position and a rear position. In both the forward and rear positions, the platform receives good support, is quite stable in use, and has an extended service life.

[0006] To achieve the above objectives, this disclosure provides an embodiment of a folding rear rack, which is installed at the rear of a locomotive. The folding rear rack includes: a platform having a placement portion and two first pivot portions, each first pivot portion being connected to two relatively far sides of the placement portion, each first pivot portion including a first platform pivot and a second platform pivot; a base having a second pivot portion on each side, each second pivot portion including a first base pivot and a second base pivot; and a swing arm assembly for pivoting the platform and the base. The platform is positioned between the base and the platform, allowing it to be adjusted relative to the base between a forward position and a rear position. The rocker arm assembly includes two first rocker arms and two second rocker arms. Each first rocker arm is pivotally mounted between the pivot of each first platform and the pivot of each first base, and each second rocker arm is pivotally mounted between the pivot of each second platform and the pivot of each second base. In the forward position, each first rocker arm and each second rocker arm abut against each other, so that the platform is close to the front of the locomotive. In the rear position, each first rocker arm and each second rocker arm abut against each other, so that the platform is far away from the front of the locomotive.

[0007] Therefore, when the platform is in the forward or rear position, the first and second rocker arms abut against each other, ensuring good support regardless of the platform's position, making it very stable and extending its service life. Furthermore, adjusting the platform's position (forward or rear) can improve the locomotive's center of gravity and overall length while avoiding sacrificing rear seat space. Simple Explanation of the Diagram

[0008] [Figure 1] is a three-dimensional schematic diagram of the folding rear shelf disclosed in this paper. [Figure 2] is a three-dimensional schematic diagram of the folding rear shelf disclosed herein, showing a form in which the pivot is fixed to the platform and the base. [Figure 3] is a three-dimensional view of the folding rear shelf disclosed herein, indicating that the platform is located at the rear. [Figure 4] is a three-dimensional view of the folding rear shelf disclosed in this paper, showing that the platform is located in the front position. [Figure 5] is a schematic diagram of the usage of the folding rear rack disclosed herein, showing one form of installation at the rear of a locomotive. [Figure 6] is a schematic diagram of the usage of the folding rear rack disclosed herein, showing another form of installation at the rear of the locomotive. Implementation

[0009] To facilitate the explanation of the central ideas disclosed in the above-mentioned creative content section, specific embodiments are provided below. The various objects in the embodiments are drawn to scale suitable for illustration, rather than to scale with actual components, as will be stated prior.

[0010] Please refer to Figures 1 to 6, which disclose a folding rear rack 100 installed at the rear 910 of a locomotive 900. The folding rear rack 100 includes a platform 10, a base 20, and a swing arm assembly 30 pivotally mounted between the platform 10 and the base 20, so that the platform 10 can be adjusted relative to the base 20 between a front position and a rear position. In the front and rear positions, the platform 10 can be well supported, making it very stable in use and extending its service life.

[0011] In this disclosed embodiment, the pendulum assembly 30 has two or more pairs of pendulums, such as two, three, four, five or more pairs of pendulums. Those skilled in the art can select the appropriate number of pendulum pairs according to their needs.

[0012] In this disclosed embodiment, in the forward position, each pair of swing arms simultaneously abuts against each other to bring the platform 10 closer to the front of the locomotive 900; in the rear position, each pair of swing arms simultaneously abuts against each other to move the platform 10 away from the front of the locomotive 900. Those skilled in the art can adjust the length and width of the swing arms and the vertical spacing between them as needed, so that in both the forward and rear positions, each pair of swing arms simultaneously abuts against each other, achieving a good supporting effect for the platform 10.

[0013] For the purpose of describing the folding rear shelf 100 disclosed herein only, the following exemplary embodiment provides a swing arm assembly 30 having 3 pairs of swing arms.

[0014] Please refer to Figure 1. The platform 10 has a placement part 11 and two first pivot parts 12. Each first pivot part 12 is connected to the two relatively far sides of the placement part 11. Each first pivot part 12 includes a first platform pivot 13, a second platform pivot 14 and a third platform pivot 15. The base 20 has second pivot parts 21 on both sides. Each second pivot part 21 includes a first base pivot 22, a second base pivot 23 and a third base pivot 24. And a rocker arm assembly 30 is pivotally mounted between the platform 10 and the base 20. The rocker arm assembly 30 includes two first rocker arms 31, two second rocker arms 32 and two third rocker arms 33.

[0015] Please refer to Figure 2. The third platform pivot 15 has a corresponding third platform pivot nut 151 to fix the third platform pivot 15 to the first pivot portion 12; and the third base pivot 24 has a corresponding third base pivot nut 241 to fix the third base pivot 24 to the second pivot portion 21. Similarly, each platform pivot and each base pivot has a corresponding nut to fix each platform pivot to the first pivot portion 12 and each base pivot to the second pivot portion 21 (omitted in the figure).

[0016] Please refer to Figures 3 and 4. In the forward position, one end of the first swing arm 31, which is pivotally connected to the first platform pivot 13, abuts against the second swing arm 32, and one end of the second swing arm 32, which is pivotally connected to the second platform pivot 14, abuts against the third swing arm 33. In the rear position, one end of the third swing arm 33, which is pivotally connected to the third platform pivot 15, abuts against the second swing arm 32, and one end of the second swing arm 32, which is pivotally connected to the second platform pivot 14, abuts against the first swing arm 31.

[0017] Please refer to Figures 3 and 4. The abutting means that the two adjacent sides of the two adjacent swing arms are parallel and closely abutting in the parallel direction. In other words, the two adjacent sides are actually joined together.

[0018] Please refer to Figures 3 and 4. The center distances of the platform pivots 13, 14 and 15 are the same. The center distances of the base pivots 22, 23 and 24 are the same. The center distances of the platform pivots are equal to the center distances of the base pivots.

[0019] Please refer to Figures 3 and 4. The widths of the two first pendulum rods 31, the two second pendulum rods 32, and the two third pendulum rods 33 are the same, and the lengths of the two first pendulum rods 31, the two second pendulum rods 32, and the two third pendulum rods 33 are the same.

[0020] Please refer to Figures 3 and 4. When the platform 10 is in the front or rear position, each swing arm has an angle θ relative to the front and rear directions of the first pivot part 12. The projection length of the width of each swing arm in the front and rear directions is equal to the center distance of the platform pivot, so that the two adjacent sides of each swing arm are parallel and fit together.

[0021] Please refer to Figures 1 and 2. The placement part 11 of the platform 10 is provided with multiple connecting holes 111.

[0022] Please refer to Figures 1, 2 and 5. The bottom of the base 20 is provided with multiple mounting holes 201; or, please refer to Figure 6. The base 20 has an extension 202 extending in the front-rear direction, and the extension 202 is provided with multiple mounting holes 203. The mounting holes 201 and mounting holes 203 are used to facilitate mounting the base 20 to the rear 910 of different types of motorcycles 900.

[0023] Therefore, this disclosure has the following advantages:

[0024] 1. When the locomotive 900 carries only one person, the platform 10 can be positioned at the front, so that the platform 10 and the storage box placed on it are closer to the front of the locomotive 900, which helps to shift the center of gravity forward and make the overall center of gravity of the locomotive 900 more stable when carrying one person.

[0025] 2. When the motorcycle 900 is parked, the platform 10 can also be in the front position to avoid or reduce the platform 10 and the storage box placed on it from exceeding the outer edge of the rear 910 of the motorcycle 900, making parking easier and reducing the probability of collision.

[0026] 3. When the motorcycle 900 is intended to carry two passengers, the platform 10 can be adjusted to a rear position, making the rear seat of the motorcycle 900 more spacious without sacrificing the rear seat space and increasing the comfort of the rear passengers. Although in this case the platform 10 and the storage box placed on it are farther away from the front of the motorcycle 900, causing the center of gravity to shift rearward, the weight of the rear passengers can balance the aforementioned change in the center of gravity, so the overall center of gravity of the motorcycle 900 remains stable when carrying two passengers.

[0027] Although this disclosure is based on a preferred embodiment, those skilled in the art can make various modifications without departing from the spirit and scope of this disclosure. The embodiments described above are merely illustrative and not intended to limit the scope of this disclosure. All modifications or alterations made without departing from the spirit of this disclosure are within the patent scope of this disclosure.

[0028] 100: Folding rear shelf 10: Platform 11: Placement Section 111: Connecting hole 12: First Principal Unit 13: First Platform Pivot 14: Second Platform Pivot 15: Third Platform Pivot 151: Third Platform Pivot Nut 20: Base 201: Mounting Hole 202: Extension 203: Mounting Hole 21: Second Principal Unit 22: First base pivot 23: Second base pivot 24: Third base pivot 241: Third base pivot nut 30: Pendulum Assembly 31: First pendulum 32: Second pendulum 33: Third lever 900: Locomotive 910: Rear of the car θ: included angle

Claims

1. A folding rear rack installed at the rear of a locomotive, the folding rear rack comprising: a platform having a placement portion and two first pivot portions, each of the first pivot portions being respectively connected to two relatively far sides of the placement portion, each of the first pivot portions including a first platform pivot and a second platform pivot; and a base having a second pivot portion on each of its two sides, each of the second pivot portions including a first base pivot and a second base pivot; A rocker arm assembly is pivotally mounted between the platform and the base to allow the platform to be adjusted relative to the base between a forward position and a rearward position. The rocker arm assembly includes two first rocker arms and two second rocker arms. Each first rocker arm is pivotally mounted between the pivot of each first platform and the pivot of each first base, and each second rocker arm is pivotally mounted between the pivot of each second platform and the pivot of each second base. In the forward position, each first rocker arm and each second rocker arm abut against each other to bring the platform closer to the front of the locomotive. In the rearward position, each first rocker arm and each second rocker arm abut against each other to move the platform away from the front of the locomotive.

2. The folding rear shelf as described in claim 1, wherein, Each platform pivot and each base pivot has a corresponding nut to fix each platform pivot to the first pivot portion and each base pivot to the second pivot portion.

3. The folding rear shelf as described in claim 1, wherein, In the forward position, one end of the first swing arm, which is pivotally connected to the first platform pivot, abuts against the second swing arm; in the rear position, one end of the second swing arm, which is pivotally connected to the second platform pivot, abuts against the first swing arm.

4. The folding rear shelf as described in claim 1 further includes a third swing arm, and the platform further includes a corresponding third platform pivot, and the base further includes a corresponding third base pivot.

5. The folding rear shelf as described in claim 4, wherein, In the forward position, one end of the first swing arm, which is pivotally connected to the first platform pivot, abuts against the second swing arm, and one end of the second swing arm, which is pivotally connected to the second platform pivot, abuts against the third swing arm. In the rear position, one end of the third swing arm, which is pivotally connected to the third platform pivot, abuts against the second swing arm, and one end of the second swing arm, which is pivotally connected to the second platform pivot, abuts against the first swing arm.

6. The folding rear shelf as described in claim 1, wherein, The first platform pivot and the second platform pivot have a platform pivot center distance, and the first base pivot and the second base pivot have a base pivot center distance. The base pivot center distance is equal to the platform pivot center distance. The width and length of each swing arm are the same. When the platform is in the front position or the rear position, each swing arm has an angle relative to the front-rear direction of the first pivot. The projection length of the width of each swing arm in the front-rear direction is equal to the platform pivot center distance, so that the two adjacent sides of each swing arm are parallel and fit together.

7. The folding rear shelf as described in claim 1, wherein, The platform's placement section has multiple connection holes.

8. The folding rear shelf as described in claim 1, wherein, The base has multiple mounting holes on its bottom.

9. The folding rear shelf as described in claim 1, wherein, The base has an extension that extends in the front-to-back direction, and the extension has multiple mounting holes.

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