Automobile tail bicycle suspension frame

Abstract

The utility model discloses a kind of automobile rear bicycle suspension frames, including frame main body, with the connecting rod of automobile rear fixed connection, and be set on frame main body and be used for suspending the front wheel suspension bracket and rear wheel suspension bracket of bicycle, the frame main body rotatably with connecting rod connection, the connecting rod is equipped with a detachable protection support mechanism, when frame main body is unloaded from automobile rear or idle state when not being connected with automobile rear, the protection support mechanism can play the support and protection effect to frame main body and / or connecting rod.

Description

Technical Field

[0001] This utility model relates to the field of load-bearing structure technology, and in particular to a bicycle suspension bracket for the rear of a car. Background Technology

[0002] With the improvement of socio-economic levels, the popularity of various automobiles has greatly increased. The functional requirements for automobiles are also becoming increasingly higher. For convenient travel, they need to carry not only people but also goods. Therefore, roof racks are now installed on the roofs to carry luggage, tents, and other travel items. Furthermore, to meet the needs of cycling, connecting frames (rear racks) are installed at the rear of the vehicle. These connecting frames can be attached to, removed from, and rotated at the rear of the vehicle. This rotational adjustment allows bicycles to be easily mounted on the connecting frame on the ground and then placed upright at the rear of the vehicle without increasing the vehicle's height, facilitating transportation.

[0003] However, in the existing technology, when the rear frame is not suspending the bicycle or connected to the rear of the car, it needs to use the connecting rod that connects to the rear of the car or the bracket that suspends the bicycle as the support end. When the connecting rod is used as the support end, wear will occur on the contact surface. When the bracket is used as the support end, the bracket is designed with an open structure to facilitate the installation and removal of bicycle wheels, and the brackets are spaced apart, so deformation will occur when supporting. In addition, the connecting rod or bracket will be subject to corrosion and contamination from air, environment, dust, etc. Summary of the Invention

[0004] The purpose of this invention is to provide a bicycle suspension bracket for the rear of a car, which can solve the problem of easy damage when the bicycle is not in use.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: This utility model provides a bicycle suspension bracket for the rear of a car, including a frame body, a connecting rod fixedly connected to the rear of the car, and a front wheel suspension bracket and a rear wheel suspension bracket disposed on the frame body for suspending the bicycle. The frame body is rotatably connected to the connecting rod, and a detachable protective support mechanism is sleeved on the connecting rod. When the frame body is rotated to a retracted state or idle, the protective support mechanism is used to support and protect the frame body and / or the connecting rod.

[0006] Furthermore, the protective support mechanism includes a support sleeve that is sleeved with the connecting rod.

[0007] Furthermore, an axial positioning component is provided between the support sleeve and the connecting rod, which is used to selectively fix the support sleeve at different axial positions of the connecting rod.

[0008] Furthermore, the axial positioning assembly includes at least one adjustment hole at one end of the connecting rod, and the support sleeve has a insertion hole. The support sleeve and the connecting rod are connected through the adjustment rod, the insertion hole, and the adjustment hole.

[0009] Furthermore, the bottom end of the support sleeve is provided with a first support rod, the first support rod is connected to a connecting plate, and the rear end of the connecting plate is movably connected to two openable and closable second support rods.

[0010] Furthermore, two pneumatic-hydraulic damping cylinders are symmetrically arranged between the connecting rod and the frame body. The pneumatic-hydraulic damping cylinders are used to provide damping force when the frame body rotates around the connecting rod, so that the frame body moves at a constant speed.

[0011] Furthermore, the main body of the vehicle frame is provided with several front wheel suspension brackets arranged laterally along the main body of the vehicle frame.

[0012] Furthermore, a shaft connecting plate is fixedly connected to the other end of the connecting rod, and the shaft connecting plate is connected to the main body of the vehicle frame via a rotating shaft.

[0013] Furthermore, the support sleeve is made of a non-metallic material that is elastic and cushioning.

[0014] Furthermore, the support sleeve is an open sleeve with a C-shaped or U-shaped cross-section.

[0015] In summary, the present invention has the following beneficial effects: In the bicycle suspension frame at the rear of the car of the present invention, by providing a detachable protective support mechanism on the connecting rod, when the frame body is removed from the rear of the car or in an idle state not connected to the rear of the car, the protective support mechanism can provide support and protection for the frame body and / or the connecting rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an exploded structural diagram of the present invention.

[0018] Figure 3 This is a diagram showing the rotational state of this utility model.

[0019] Figure 4 This is a cross-sectional view of the gas-liquid damping cylinder of this utility model.

[0020] In the picture: 1. Chassis body; 2. Connecting rod; 3. Pneumatic-hydraulic damping cylinder; 4. Protective support mechanism; 5. Shaft connecting plate; 6. Rotating shaft; 11. Front wheel suspension bracket; 12. Rear wheel suspension bracket; 31. Cylinder body; 32. Piston rod; 33. Seal; 34. End cap; 41. Support sleeve; 42. Axial positioning assembly; 311. Oil chamber; 312. Air chamber; 313. Overflow hole; 411. First support rod; 412. Connecting plate; 413. Second support rod; 421. Adjustment hole; 422. Insertion hole; 423. Adjustment rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] This embodiment discloses a bicycle suspension bracket for the rear of a car, with reference to... Figures 1-4 The bicycle includes a frame body 1, a connecting rod 2 fixedly connected to the rear of a vehicle, and a front wheel suspension bracket 11 and a rear wheel suspension bracket 12 mounted on the frame body 1 for suspending the bicycle. The frame body 1 is rotatably connected to the connecting rod 2. A detachable protective support mechanism 4 is fitted onto the connecting rod 2. When the frame body 1 is removed from the rear of the vehicle or is in an idle state not connected to the rear of the vehicle, the protective support mechanism 4 is connected to the connecting rod 2, which can provide support and protection for the frame body 1 and / or the connecting rod 2.

[0023] Reference Figure 2 The protective support mechanism 4 includes a support sleeve 41 that is sleeved on the connecting rod 2. The support sleeve 41 is sleeved on the connecting rod 2 to support and protect the frame body 1 and the connecting rod 2, effectively preventing the connecting rod 2 from being corroded and contaminated by air, environment, dust and other factors.

[0024] Reference Figure 2 An axial positioning assembly 42 is provided between the support sleeve 41 and the connecting rod 2 for selectively fixing the support sleeve 41 at different axial positions of the connecting rod 2. Specifically, the axial positioning assembly 42 includes at least one adjusting hole 421 opened at one end of the connecting rod 2, and the support sleeve 41 is provided with a insertion hole 422. The support sleeve 41 and the connecting rod 2 are connected by an adjusting rod 423, the insertion hole 422, and the adjusting hole 421. The bottom end of the support sleeve 41 is provided with... There is a first support rod 411, which is connected to a connecting plate 412. The rear end of the connecting plate 412 is movably connected to two openable second support rods 413. By setting a first support rod 411 and two openable second support rods 413 at the lower end of the support sleeve 41, when the frame body 1 is removed from the rear of the car or is in an idle state not connected to the rear of the car, the two second support rods 413 are opened, and then form a triangular support with the first support rod 411, thereby improving the support effect.

[0025] Reference Figures 1-3 A pneumatic-hydraulic damping cylinder 3 is provided between the connecting rod 2 and the frame body 1. The pneumatic-hydraulic damping cylinder 3 is used to provide damping force when the frame body 1 rotates around the connecting rod 2, so that the frame body 1 moves at a constant speed. When the pneumatic-hydraulic damping cylinder 3 fails, it may move slowly when there is a pneumatic source, but it usually cannot extend or retract on its own (gets stuck) when there is no pneumatic source. Under such circumstances, the frame body 1 will not suddenly and uncontrollably fall rapidly, thereby effectively avoiding damage to the bicycle, the rear frame, and the car.

[0026] In order to improve the stability of the frame body 1 during rotation, two pneumatic-hydraulic damping cylinders 3 are symmetrically arranged between the connecting rod 2 and the frame body 1. When one pneumatic-hydraulic damping cylinder 3 fails, the other pneumatic-hydraulic damping cylinder 3 can still control the rotation and support of the frame body 1.

[0027] When suspending the bicycle, first remove the protective support mechanism 4 from the connecting rod 2. After the front wheel and rear wheel of the bicycle are suspended on the front wheel suspension bracket 11 and the rear wheel suspension bracket 12 respectively, the pneumatic-hydraulic damping cylinder 3 drives the frame body 1 and the bicycle to rotate upward together, so that the bicycle is placed at the rear of the car.

[0028] In this embodiment, the gas-liquid damping cylinder 3 is symmetrically connected to the side of the rotating shaft 6 near the rear of the vehicle. It can be understood that the core function of the gas-liquid damping cylinder 3 is to provide damping force for the rotation of the vehicle frame body 1. Its specific installation location (e.g., located on the front or rear side of the rotating shaft 6) and the resulting pushing (pressing) or pulling (stretching) action are all based on the same damping principle to achieve the same technical effect.

[0029] The other end of the connecting rod 2 is fixedly connected to the shaft connecting plate 5. The shaft connecting plate 5 is connected to the frame body 1 through the rotating shaft 6. When the gas-hydraulic damping cylinder 3 drives the frame body 1 to rotate, the cylinder body 31 of the gas-hydraulic damping cylinder 3 is fixedly connected to the connecting rod 2, and its piston rod 32 drives the frame body 1 and the bicycle to rotate together around the rotating shaft 6.

[0030] The frame body 1 is provided with several front wheel suspension brackets 11 arranged laterally along the frame body 1, which facilitates the simultaneous lateral suspension of multiple bicycles.

[0031] The support sleeve 41 is made of a non-metallic material with elasticity and cushioning, which facilitates the elastic support effect when the frame body 1 is removed from the rear of the car or when it is idle and not connected to the rear of the car, thereby providing further protection.

[0032] The support sleeve 41 is an open sleeve with a C-shaped or U-shaped cross-section, so that it can be radially fitted onto the connecting rod 2, and the support sleeve 41 and the connecting rod 2 can be quickly installed and removed.

[0033] Reference Figure 4 The gas-liquid damping cylinder 3 includes a cylinder body 31, a piston rod assembly, and an end cap 34. The cylinder body 31 has an oil chamber 311 and an air chamber 312. A connecting seat is connected to the bottom of the cylinder body 31. An overflow hole 313 is opened at one end of the oil chamber 311. The connecting seat and the overflow hole are threadedly connected. The piston rod assembly includes a piston rod 32, a piston, and a seal 33.

[0034] During assembly of the gas-hydraulic damping cylinder 3, first install the piston and O-ring (piston seal) to the designated position on the piston rod 32, ensuring the through hole on the piston is unobstructed; then install the end cap 34 and seal, and then vertically fix the cylinder body 31 (threaded connection end downwards); use a syringe to inject approximately 1 / 4 to 1 / 3 of the stroke capacity of hydraulic oil into the cylinder body 31 on the side where the oil chamber 311 is located; slowly and vertically insert the assembled piston rod assembly (piston facing down) into the cylinder body 31 from above until it reaches near the bottom of the stroke, performing airless assembly of the piston rod assembly. Using pre-filled oil to lubricate the seal 33; install the dust seal, O-ring (end cap 34 seal), etc. into the front cover 34, then put the front cover 34 onto the piston rod 32 and press it into the left port of the cylinder body 31 to ensure it is in place; then tilt the cylinder body 31 so that one side of the oil chamber 311 is at the highest point; pour hydraulic oil into the oil chamber 311 through the oil filling / venting hole on the cylinder body 31 until the oil overflows from the hole; finally, while keeping the cylinder body 31 tilted, use a tool to push and pull the piston rod 32 very slowly, performing several full-stroke reciprocating movements to remove the air bubbles attached to the inner wall. The air-hydraulic damping cylinder assembled in this way allows the frame body 1 to move at a uniform speed, and when the air-hydraulic damping cylinder 3 fails, it may move slowly when there is an air source, but usually cannot extend or retract on its own (locks up) when there is no air source, thus protecting the bicycle, rear frame, and car from collision damage.

[0035] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A bicycle suspension bracket for the rear of a car, comprising a frame body (1), a connecting rod (2) fixedly connected to the rear of a car, and a front wheel suspension bracket (11) and a rear wheel suspension bracket (12) disposed on the frame body (1) for suspending the bicycle, wherein the frame body (1) is rotatably connected to the connecting rod (2), characterized in that: A detachable protective support mechanism (4) is fitted on the connecting rod (2). The protective support mechanism (4) includes a support sleeve (41) that is fitted with the connecting rod (2). When the frame body (1) is rotated to the retracted state or idle, the protective support mechanism (4) is used to support and protect the frame body (1) and / or the connecting rod (2).

2. A hitch for suspending a bicycle from a vehicle as claimed in claim 1, wherein: An axial positioning assembly (42) is provided between the support sleeve (41) and the connecting rod (2) for selectively fixing the support sleeve (41) at different axial positions of the connecting rod (2).

3. A hitch for suspending a bicycle from a vehicle as claimed in claim 2, wherein: The axial positioning assembly (42) includes at least one adjustment hole (421) opened at one end of the connecting rod (2), and the support sleeve (41) is provided with a plug hole (422). The support sleeve (41) and the connecting rod (2) are connected by an adjustment rod (423) to the plug hole (422) and the adjustment hole (421).

4. A hitch for suspending a bicycle from a vehicle as defined in claim 1, wherein: The bottom end of the support sleeve (41) is provided with a first support rod (411), the first support rod (411) is connected to a connecting plate (412), and the rear end of the connecting plate (412) is movably connected to two openable and closable second support rods (413).

5. A hitch for suspending a bicycle from a vehicle as defined in claim 1, wherein: Two gas-liquid damping cylinders (3) are symmetrically arranged between the connecting rod (2) and the frame body (1). The gas-liquid damping cylinders (3) are used to provide damping force when the frame body (1) rotates around the connecting rod (2), so that the frame body (1) moves at a constant speed.

6. A hitch for suspending a bicycle from a vehicle as defined in claim 1, wherein: The frame body (1) is provided with several front wheel suspension brackets (11) arranged laterally along the frame body (1).

7. A hitch for suspending a bicycle from a vehicle as defined in claim 1, wherein: The other end of the connecting rod (2) is fixedly connected to a shaft connecting plate (5), and the shaft connecting plate (5) is connected to the frame body (1) through a rotating shaft (6).

8. A hitch for suspending a bicycle from a vehicle as defined in claim 1, wherein: The support sleeve (41) is made of a non-metallic material that is elastic and cushioning.

9. A bicycle suspension bracket for the rear of a car as described in claim 1, characterized in that: The support sleeve (41) is an open sleeve with a C-shaped or U-shaped cross-section.

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