Pedal turnover mechanism for rear dragging type bicycle frame

Abstract

The utility model relates to the field of rear dragging type bicycle frames, and provides a pedal turnover mechanism for a rear dragging type bicycle frame, which comprises a vertical frame and a turnover seat, the vertical frame is mounted on the turnover seat; the turnover seat is mounted on the connecting seat through a turnover mechanism, and a bicycle is mounted on the vertical frame and the turnover seat at the same time; according to the rear dragging type bicycle frame, the overturning seat is additionally arranged on the basis of the prior art, and the overturning mechanism is used for installing the overturning seat on the connecting frame, so that the problems existing in the prior art are solved, the requirement that a trunk can be opened and closed without disassembly after a bicycle is installed is met, and the functionality and convenience of the rear dragging type bicycle frame are improved; meanwhile, the overturning mechanism is of a pure mechanical structure, the mechanical structure is not prone to damage, matching is more precise, the structure is more stable, the using effect is better, and the using requirement is completely met; in the driving process, the safety pins are adopted for reinforcement, and the stability of the overturning base is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rear-mounted bicycle frames, and in particular to a pedal flipping mechanism for a rear-mounted bicycle frame. Background Technology

[0002] As living standards improve, more and more people are enjoying cycling. However, the cycling environment in urban areas is poor and cannot satisfy the experience. To improve the cycling experience, many people choose to transport their bicycles to the suburbs for cycling. However, bicycles are large and the trunk capacity of family cars is small, which cannot meet the needs. To enable cycling in the suburbs, bicycle racks for cars have appeared on the market.

[0003] While car bike racks currently on the market meet the need for carrying bicycles in vehicles, the racks are fixed to the car body and the bicycles are fixed to the racks, completely obscuring the trunk. To open the trunk, the bicycles must be removed, affecting the use of the trunk. Furthermore, after closing the trunk, the bicycles must be reinstalled, which is very cumbersome, time-consuming, and results in a poor user experience. Utility Model Content

[0004] This utility model proposes a pedal-operated flipping mechanism for a rear-mounted bicycle frame. By adding a flipping seat to the existing technology and using the flipping mechanism to install the flipping seat on the connecting frame, it solves the problems existing in the prior art, meets the need to open and close the rear compartment without disassembling after the bicycle is installed, and improves the functionality and convenience of the rear-mounted bicycle frame. At the same time, the flipping mechanism adopts a purely mechanical structure, which is not easily damaged, has a more precise fit, a more stable structure, and a better performance, fully meeting the usage requirements. During the riding process, a safety pin is used for reinforcement to ensure the stability of the flipping seat.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A foot-operated flipping mechanism for a rear-mounted bicycle frame is provided for use on a rear-mounted bicycle frame, the rear-mounted bicycle frame including a connecting seat, the connecting seat being mounted at the rear of a vehicle;

[0007] The foot-operated flipping mechanism includes a stand and a flipping base;

[0008] The upright frame is mounted on the flip base;

[0009] The flipping seat is mounted on the connecting seat via a flipping mechanism;

[0010] The bicycle is mounted on both the upright and the flip seat.

[0011] Furthermore, the flipping mechanism includes a foot pedal, a welding plate, a pedal rotating shaft, a pull rod, a flipping frame hook, a limiting cylindrical pin, a reset spring, and a connecting shaft;

[0012] The connecting shaft is mounted on the connecting seat, and the flip seat is rotatably connected to the connecting shaft;

[0013] The pedal rotation shaft is mounted on the flip-up seat;

[0014] The welding plate is rotatably mounted on the pedal rotating shaft;

[0015] The foot pedal is installed at the bottom end of the welding plate;

[0016] The two ends of the flipping frame hook are respectively connected to one end of the pull rod and one end of the reset spring;

[0017] The other end of the pull rod is rotatably connected to the top of the welding plate;

[0018] The other end of the reset spring is mounted on the flip-up base;

[0019] The limiting cylindrical pin is installed on the connecting seat, the flipping frame hook is hooked on the limiting cylindrical pin when the foot pedal is raised, and the flipping frame hook is disengaged from the limiting cylindrical pin when the pedal is pressed down.

[0020] Furthermore, the flipping mechanism also includes a linear limiting structure, which includes a first track, a second track, a first slide groove, and a second slide groove;

[0021] Both the first track and the second track are installed inside the flipping seat, and the first track and the second track are coaxially arranged.

[0022] The first and second sliding grooves are symmetrically arranged on the front and rear sides of the flipping frame hook;

[0023] The flipping frame hook is slidably connected to the first track via the first groove, and the flipping frame hook is slidably connected to the second track via the second groove.

[0024] Furthermore, the flipping mechanism also includes a limiting pin, which is mounted on the flipping base;

[0025] The welding plate is provided with an open slot;

[0026] When the welding plate is pulled down, it disengages from the limiting pin and, when in its original position, abuts against the limiting pin through the opening groove.

[0027] Furthermore, the flipping mechanism also includes a safety pin, and the flipping seat and the welding plate are both provided with safety holes, and the safety pin can be detachably inserted into the safety holes.

[0028] Furthermore, two sets of the flipping mechanism are provided, and the two sets of the flipping mechanism are arranged symmetrically;

[0029] The flipping seat is mounted on the connecting seat via two sets of flipping mechanisms.

[0030] Furthermore, the upright is mounted on one end of the flip-up seat near the vehicle body.

[0031] Furthermore, a foot pedal is provided on the foot pedal bar.

[0032] Furthermore, the flipping seat is inclined upward from the inner end to the outer end;

[0033] Correspondingly, the top of the support frame is tilted toward the vehicle body on which it is installed.

[0034] Furthermore, the foot pedal is set horizontally or the force-applying end is tilted upward.

[0035] This invention solves the problems existing in the prior art by adding a flip seat and using a flip mechanism to install the flip seat on the connecting frame. It meets the need to open and close the rear compartment without disassembling after the bicycle is installed, thus improving the functionality and convenience of the rear-mounted bicycle frame. At the same time, the flip mechanism adopts a purely mechanical structure, which is not easily damaged, has a more precise fit, a more stable structure, and a better performance, fully meeting the usage requirements. During the ride, a safety pin is used for reinforcement to ensure the stability of the flip seat. Attached Figure Description

[0036] 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.

[0037] Figure 1 This is a schematic diagram of the structure of a foot pedal flipping mechanism for a rear-mounted bicycle frame in a specific embodiment of this utility model;

[0038] Figure 2 for Figure 1 An exploded view of a foot pedal flipping mechanism for a rear-mounted bicycle frame is shown.

[0039] Figure 3 for Figure 1 , Figure 2 A schematic diagram of a foot pedal flipping mechanism for a rear-mounted bicycle frame is shown.

[0040] Figure 4 for Figures 1-3 A schematic diagram showing the connection relationship of a foot pedal flipping mechanism for a rear-mounted bicycle frame;

[0041] Figure 5 for Figures 1-4 The diagram shows the state of a rear-mounted bicycle frame with a foot pedal flipping mechanism in the flipped-in position.

[0042] Figure 6 for Figures 1-5 The diagram shows the structural state of a foot pedal flipping mechanism for a rear-mounted bicycle frame during the flipping process.

[0043] Figure 7 for Figures 1-5 The diagram shows the structural state of a rear-mounted bicycle frame with a foot pedal flipping mechanism where the flipping frame hook and the limiting cylindrical pin are disengaged.

[0044] Explanation of reference numerals in the attached drawings: Connecting seat 1; Stand 2; Flip seat 3; Flipping mechanism 4; Foot pedal 41; Welding plate 42; Pedal rotation shaft 43; Pull rod 44; Small slide 441; Small connecting shaft 442; Flipping frame hook 45; First slide 451; Second slide 452; Limiting cylindrical pin 46; Return spring 47; Connecting shaft 48; Limiting pin 49; Safety pin 410; First track 401; Second track 402; Foot pedal 5;

[0045] All directions mentioned in this text are indicated in the appendix. Figure 3 As shown below. Detailed Implementation

[0046] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0047] In a specific embodiment of this utility model, see Figures 1-7A foot-operated flipping mechanism for a rear-mounted bicycle rack is disclosed. This mechanism is used on a rear-mounted bicycle rack, which is a device installed behind a car to mount a bicycle. The rear-mounted bicycle rack includes a connecting seat 1, which is mounted on the car. In the prior art, the connecting seat is used to directly place the bicycle, which blocks the trunk after installation, making it impossible to open the trunk. To open the trunk, the bicycle must be removed, which is very inconvenient. The foot-operated flipping mechanism is mounted on the connecting seat 1, and the bicycle is mounted on the foot-operated flipping mechanism, which can rotate the bicycle and the flipping seat relative to the connecting frame as a whole, eliminating the need to remove the bicycle when opening the trunk.

[0048] In a specific embodiment of this utility model, see Figures 1-7 The pedal flipping mechanism includes a stand 2 and a flipping seat 3. The bicycle is mounted on both the stand 2 and the flipping seat 3. The flipping seat 3 is used to drive the bicycle and the stand 2 to flip as a whole.

[0049] The stand 2 is installed on the flip seat 3. When the trunk needs to be opened, manually pull the bicycle installed on the stand 2 and the flip seat 3 to the right (pull the stand 2 when there is no bicycle). This will cause the flip seat 3 to flip to the right and upward, so that the stand 2 and the bicycle are separated from the trunk by a certain distance, ensuring that the trunk can be opened and closed normally.

[0050] The bicycle is mounted on both the upright and the flip seat;

[0051] The flipping seat 3 is installed on the connecting seat 1 through the flipping mechanism 4. The flipping mechanism 4 cooperates with the upright frame 2 to drive the flipping seat 3 to flip, thereby flipping the whole structure. This causes the upright frame 2 and the flipping seat 3 to separate the bicycle on them from the trunk by a certain distance. Therefore, it is not necessary to disassemble the bicycle when opening the trunk, which greatly improves convenience.

[0052] Wheels can also be installed at the bottom of the flip base 3 and the connecting frame 1, making it more convenient to move independently on flat ground.

[0053] In a specific embodiment of this utility model, see Figures 1-7 The flip seat 3 gradually tilts upward from the inner end to the outer end, as shown in the attached figure. Figure 3 As shown in the left-to-right direction, the connecting frame 1 is also like this;

[0054] Correspondingly, the top of the support frame 2 is tilted towards the vehicle body to which it is installed, but it will not rub against the vehicle body, especially during driving.

[0055] This design ensures that after the bicycle is installed, the bicycle, connecting seat 1, and flip seat 3 all tilt towards the bicycle body, making the bicycle installation more stable and ensuring stability during riding.

[0056] In a specific embodiment of this utility model, see Figures 1-7 The upright frame 2 is installed on the end of the flip seat 3 near the vehicle body. When flipping is required, the upright frame 2 (or the bicycle on the upright frame 2) is pulled outward while the pedal is stepped down to ensure that the entire equipment can flip stably.

[0057] The stand 2 is a U-shaped stand, which can provide a mounting platform for bicycles. That is, the bicycle can be mounted on both the flip seat 3 and the stand 2, ensuring the stability and safety of the bicycle installation.

[0058] In a specific embodiment of this utility model, see Figures 1-7 The flipping mechanism 4 includes a foot pedal 41, a welding plate 42, a pedal rotating shaft 43, a pull rod 44, a flipping frame hook 45, a limiting cylindrical pin 46, a reset tension spring 47, and a connecting shaft 48.

[0059] The connecting shaft 48 is mounted on the connecting seat 1 (preferably a rotatable connection). The flip seat 3 is rotatably connected to the connecting shaft 48, and the flip seat 3 rotates around the connecting shaft 48 as its axis of rotation. An angle iron 31 is welded onto the flip seat 3. The pedal rotating shaft 43 is mounted on the angle iron 31 of the flip seat 3, and the pedal rotating shaft 43 itself cannot rotate. The welding plate 42 is rotatably mounted on the pedal rotating shaft 43. The foot pedal 41 is mounted on the bottom end of the welding plate 42, and when not flipped, the foot pedal 41 is parallel to the flip seat 3 and the connecting frame 1. The two ends of the flip frame hook 45 are respectively connected to the pull rod 44 and the return spring 47. One end is connected; the other end of the pull rod 44 is rotatably connected to the top of the welding plate 42. The end of the pull rod 44 connected to the welding plate 42 is provided with a small groove 441. A small connecting shaft 442 is provided in the small groove 441. Both ends of the small connecting shaft 442 are installed on the welding plate 42. The small groove 441 can prevent the structure from being limited. The other end of the reset spring 47 is installed on the flipping seat 3. The limiting cylindrical pin 46 is installed on the connecting seat 1. The flipping frame hook 45 is hooked on the limiting cylindrical pin 46 when the foot pedal 41 is raised. The flipping frame hook 45 is disengaged from the limiting cylindrical pin 46 when the pedal is pressed down.

[0060] When the flipping seat 3 needs to be pulled outward, first press the foot pedal 41 downward. At this time, the welding plate 42 will rotate under the action of the foot pedal 41 (the bottom rotates to the left and the top rotates to the right). The top of the welding plate 42 will then drive the pull rod 44 to slide to the right and downward. The pull rod 44 will then drive the flipping frame hook 45 to slide to the right. Pressing the foot pedal 41 further will cause the flipping frame hook 45 to disengage from the limiting cylindrical pin 4. Then, pull the upright frame 2 (or bicycle) to flip the entire flipping seat 3 outward (the outer side is the attached side). Figure 3(as shown on the right), thus realizing the overall flipping of the bicycle with the stand 2 and the flip seat 3, leaving space for opening and closing the trunk, during which the return spring 47 is stretched;

[0061] When the flip seat 3 needs to be reset, release the pedal lever 41 and push the bicycle upward to flip it. When the bicycle flips upward, it pushes the upright frame upward to flip it, which in turn drives the flip seat 3 to flip upward. After releasing the pedal lever 41, the return force of the return spring 47 pulls the flip frame hook 45 to reset, which in turn pulls the lever 44 to slide to the left and upward, which in turn drives the welding plate 42 to rotate upward and to the left. When the inclined surface of the flip frame hook 45 touches the limit cylindrical pin 46, continue to push the bicycle to flip. At this time, the flip frame hook 45 is pushed backward. After the inclined surface of the flip frame hook 45 has rotated, the return spring 47 pulls the flip frame hook 45 to reset it. At this time, the flip frame hook 45 is engaged with the limit cylindrical pin 46, completing the reset.

[0062] In a specific embodiment of this utility model, see Figures 1-7 The flipping mechanism 4 further includes a linear limiting structure, which includes a first track 401, a second track 402, a first slide groove 451, and a second slide groove 452.

[0063] Both the first track 401 and the second track 402 are installed inside the flipping base 3, and the first track 401 and the second track 402 are detachably fixed inside the flipping base 3; the first track 401 and the second track 402 are coaxially arranged; the first slide groove 451 and the second slide groove 452 are symmetrically arranged on the front and rear sides of the flipping frame hook 45, and the first slide groove 451 and the second slide groove 452 are both open strip grooves. The flipping frame hook 45 is slidably connected to the first track 401 through the first slide groove 451, and the flipping frame hook 45 is slidably connected to the second track 402 through the second slide groove 452; the flipping frame hook 45 slides along the first track 401 and the second track 402 when sliding left and right, ensuring the stability of the flipping frame hook 45 during the movement process; the first track 401 is set to cooperate with the first slide groove 451, and the second track 402 is set to cooperate with the second slide groove 452, ensuring that the flipping frame hook 45 always moves in a straight line during the left and right sliding process, ensuring the tightness of its cooperation with the limiting cylindrical pin 46;

[0064] The first track 401 and the second track 402 are two plates installed on the flipping frame 3 and parallel to the axis of the flipping frame 3. The two plates are located in the same inclined plane. Two first tracks 401 are formed on the two sides of one plate that are parallel to the flipping frame 3, and two second tracks 402 are formed on the two sides of the other plate that are parallel to the flipping frame 3. The flipping frame hook 45 is a combination of multiple plates, as shown in the attached figure. The purpose is to increase the thickness of the flipping frame hook 45. Alternatively, an integral structure can be used. The front and rear plates of the flipping frame hook 45 have the same structure and hooks are provided at the bottom. Each plate is provided with a first groove 451 and a second groove 452. That is, there are two first grooves 451 and two second grooves 452 on the flipping frame hook 45. The two first grooves 451 cooperate with the two first tracks 401 respectively, and the two second grooves 452 cooperate with the two second tracks 402, so that the flipping frame hook 45 will not deflect to the side when moving left and right, thus ensuring the stability of the flipping frame hook 45 when moving left and right.

[0065] When the flip seat 3 flips outward, the flip frame hook 45 slides toward the second track 402.

[0066] In a specific embodiment of this utility model, see Figures 1-7 The flipping mechanism 4 also includes a limiting pin 49, which is mounted on the flipping base 3;

[0067] The welding plate 42 is provided with an opening groove 421;

[0068] When the welding plate 42 is pulled down (at which time the flipping seat 3 needs to be flipped), it disengages from the limiting pin 49 and, in its original position (with the opening groove abutting against the limiting pin, at which time the flipping seat 3 does not need to be flipped), abuts against the limiting pin 49 through the opening groove 421.

[0069] Since the reset process mainly relies on the return force of the reset spring 47, the return force of the spring has a certain degree of instability, which may lead to excessive rebound and cause structural instability. In order to prevent the foot pedal 41 from rebounding too much, a limit pin 49 is installed on the flip seat 3, and an opening slot 421 is provided on the welding plate 42. When the foot pedal 41 is reset to the position, the opening slot 421 is just locked on the limit pin 49, which cancels the remaining return force of the reset spring 47, ensuring that the reset is not excessive and ensuring the stability of the movement between structures.

[0070] In a specific embodiment of this utility model, see Figures 1-7 The flipping mechanism 4 also includes a safety pin 410. The flipping seat 3 and the welding plate 42 are both provided with safety holes. In the original position, the flipping seat 3 and the safety holes provided on the welding plate 42 are coaxial. At this time, the safety pin 410 is detachably inserted into the safety hole.

[0071] To prevent the tilting seat 3 from moving upwards under external forces such as bumps during driving, which could cause dangerous accidents, and to prevent accidental collision with the foot pedal 5 and the risk of tipping over, safety holes are provided on the angle irons on both sides and the welding plates on both sides of the tilting seat 3. Each safety hole on both sides is fixed by a safety pin, which ensures the stability of the structure and the safety during driving.

[0072] The safety pin should be designed to be resistant to falling off, ensuring safety during driving.

[0073] In a specific embodiment of this utility model, see Figures 1-7 To ensure stability during the flipping process, a set of the flipping mechanism is provided on both the left and right sides of the flipping seat 3. The two sets of the flipping mechanism are symmetrically arranged to ensure uniform force distribution.

[0074] The flipping seat 3 is mounted on the connecting seat 1 via connecting shafts in the two sets of flipping mechanisms, making the connection between the flipping seat and the connecting seat more stable and reliable.

[0075] In a specific embodiment of this utility model, see Figures 1-7 The foot pedal 41 is equipped with a foot pedal 5, and the two sets of flipping mechanisms can share one foot pedal 5; when pressing down the foot pedal 5, the foot pedal 5 can better bear the downward pressure, which is very convenient.

[0076] In a specific embodiment of this utility model, see Figures 1-7 The foot pedal is horizontally positioned or the force-applying end is tilted upwards, as shown in the attached figure. Figure 3 As shown, this design ensures that it is easier to step down, which is in line with ergonomics.

[0077] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pedal turnover mechanism for a rear-mounted bicycle rack, the rear-mounted bicycle rack comprising a connecting seat, the connecting seat being mounted on the rear of a vehicle; the pedal turnover mechanism comprising a stand and a turnover seat; the stand being mounted on the turnover seat; the turnover seat being mounted on the connecting seat through a turnover mechanism; a bicycle being mounted on the stand and the turnover seat simultaneously; the turnover mechanism comprising a pedal rod, a welding plate, a pedal rotating shaft, a pull rod, a turnover hook, a limiting cylindrical pin, a reset tension spring and a connecting shaft; the connecting shaft being mounted on the connecting seat, the turnover seat being rotatably connected with the connecting shaft; the pedal rotating shaft being mounted on the turnover seat; the welding plate being rotatably sleeved on the pedal rotating shaft; the pedal rod being mounted on the bottom end of the welding plate; the turnover hook having two ends connected with the pull rod and one end of the reset tension spring respectively; the other end of the pull rod being rotatably connected with the top end of the welding plate; the other end of the reset tension spring being mounted on the turnover seat; the limiting cylindrical pin being mounted on the connecting seat, the turnover hook being hooked on the limiting cylindrical pin when the pedal rod is lifted, the turnover hook being separated from the limiting cylindrical pin when the pedal is pressed down. characterized in that The turnover mechanism further comprises a linear limiting structure, the linear limiting structure comprising a first track, a second track, a first sliding groove and a second sliding groove; the first track and the second track being coaxially arranged in the turnover seat; the first sliding groove and the second sliding groove being symmetrically arranged on the front and back sides of the turnover hook; the turnover hook being slidably connected with the first track through the first sliding groove, the turnover hook being slidably connected with the second track through the second sliding groove. The turnover mechanism further comprises a limiting pin, the limiting pin being mounted on the turnover seat; the welding plate being provided with an open slot; the welding plate being separated from the limiting pin when being pulled down, the welding plate being abutted on the limiting pin through the open slot when being in place. The turnover mechanism further comprises a safety pin, the turnover seat and the welding plate being simultaneously provided with safety holes, the safety pin being detachably inserted into the safety holes. The turnover mechanism is provided with two sets, the two sets of the turnover mechanism being symmetrically arranged; the turnover seat being mounted on the connecting seat through the two sets of the turnover mechanism. The stand is mounted on the end of the turnover seat close to the vehicle body. The pedal rod is provided with a pedal plate. The turnover seat is inclined upward from the inner end to the outer end. Correspondingly, the top of the stand is inclined toward the mounted vehicle body. The pedal rod is horizontally arranged or the force applying end is inclined upward. ​ ​ ​ ​ 2. A pedal flip mechanism for a trailer type bicycle rack as defined in claim 1, characterized in that: ​ ​ ​ ​ 3. A pedal inversion mechanism for a trailer type bicycle rack as claimed in claim 1 or 2, characterized in that: ​ ​ ​ 4. A pedal flip mechanism for a trailer type bicycle rack as defined in claim 2 wherein: ​ 5. A pedal flip mechanism for a trailer type bicycle rack as defined in claim 1 wherein: ​ ​ 6. A pedal flip mechanism for a trailer type bicycle rack as defined in claim 2 wherein: ​ 7. A pedal flip mechanism for a trailer type bicycle rack as defined in claim 2 wherein: ​ 8. A pedal flip mechanism for a trailer type bicycle rack as defined in claim 2 wherein: ​ ​ 9. A pedal flip mechanism for a trailer type bicycle rack as defined in claim 1 wherein: ​

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