A mechanical automobile automatic U-turn device without resetting

Abstract

The present invention relates to a mechanical automatic U-turn device for automobiles that does not require resetting, comprising a ground, a circular guide rail installed on the ground, and a U-turn turntable. The U-turn turntable is symmetrically provided with push-down pedals, one of which is always higher than the turntable and the other is level with the turntable. The first car pushes down one of the pedals, driving the turntable to rotate and simultaneously raising the other pedal. The second car pushes down the raised pedal, driving the turntable to reverse, and the pedal that was pushed down for the first time rises. The subsequent cars repeat this action. At the same time, there is a self-locking mechanism on the U-turn turntable to ensure that the U-turn turntable will not shake after it is turned into place. The self-locking device will unlock when the car pushes down the pedal. The present invention does not use any external energy other than the car's own gravity, has a simple structure, does not require resetting, and except for the push-down pedal, the U-turn turntable will not change in height during rotation, will not cause discomfort to the user, and is applicable to all existing cars.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile auxiliary U-turn devices, in particular to a mechanical automobile automatic U-turn device. Background Art

[0002] With the continuous acceleration of urbanization, the number of private cars has continued to rise. In recent years, accidents caused by the difficulty of turning vehicles in narrow spaces have become frequent. This not only causes a lot of trouble for car owners, but also poses many safety hazards. For example, it can block fire lanes and prevent vehicles from being moved out of the way in time. Therefore, how to quickly and conveniently turn vehicles in narrow spaces has become an urgent problem that needs to be solved.

[0003] CN206299184U discloses a "car U-turn turntable," and CN204415358U discloses a "self-service car U-turn device." While both patents enable automatic car U-turns, they both suffer from the problem of variable turntable height. Furthermore, CN206299184U uses an electric self-locking and unlocking device, while the turntable surface in CN204415358U is even inclined, significantly impacting the user experience. CN109849870A discloses a "fixed car U-turn platform." Although its turntable height remains constant, it is only suitable for front-wheel drive vehicles, limiting its scope of application. Summary of the Invention

[0004] While the present invention utilizes a mechanical structure to complete the automatic U-turn of the car, the turntable of the U-turn does not change in the height direction and is always level with the ground. The device can be used continuously without resetting and is applicable to all cars.

[0005] To achieve the above-mentioned objectives, the present invention adopts a solution: a mechanical automatic U-turn device for automobiles that does not require resetting, comprising a ground and a circular guide rail mounted on the ground, the side walls of the ground symmetrically provided with grooves, a U-turn turntable mounted on the circular guide rail, a pair of holes symmetrically opened on the side walls of the U-turn turntable, each containing a self-locking rod, the self-locking rod being connected to the turntable via a compression spring. Simultaneously, a pair of downward pressure pedals are symmetrically mounted on the U-turn turntable, the lower sides of each of the pair of downward pressure pedals being fixedly connected to a circular slide rail, each of the pair of circular slide rails being fitted with a wedge-shaped slider, the lower sides of the pair of wedge-shaped sliders being simultaneously engaged with a rotating rod, the rotating rod being fixedly connected to the input gear of a two-stage speed-increasing gear set and being mounted together on the ground, the output gear of the two-stage speed-increasing gear set being fixedly connected to the U-turn turntable.

[0006] Assume that in the initial state, the first push-down pedal is on the side away from the device entrance, and the second push-down pedal is on the side closer to the device entrance. In this state, the first push-down pedal is higher than the turntable, and the second push-down pedal is level with the turntable. When the first car enters, it first passes the second push-down pedal, but it is ineffective. After fully atop the turntable, it presses the first push-down pedal. The first push-down pedal, along with the attached first circular rail, descends, pushing the wedge-shaped slider downward, which in turn rotates the rotating rod. The rotating rod then rotates the turntable via a secondary speed-increasing gear, driving the telescopic rod on the turntable's side wall to slide out along the groove in the ground wall, completing the unlocking process. During this process, the second wedge-shaped slider, second circular rail, and second push-down pedal on the other side of the turntable are pushed upward by the rotating rod. After the U-turn is completed, the first and second push-down pedals swap positions, with the second push-down pedal now higher than the turntable, and the first push-down pedal level with the turntable. When the second car enters, it presses the second push-down pedal, causing the device to move in the opposite direction to when the first push-down pedal was pressed, and the turntable rotates in the opposite direction. After the second car completes the U-turn, the device returns to its initial state. The above action is repeated when another car enters.

[0007] The beneficial effects of the present invention are:

[0008] The present invention does not require any additional energy and can complete the U-turn by using only the gravitational potential energy of the car.

[0009] The U-turn turntable of the present invention does not change in any direction of height, but it will drop slightly when the pedal is pressed down, which greatly improves the comfort of use.

[0010] The present invention can be used continuously without the need for resetting.

[0011] The present invention is applicable to cars of various sizes and has a wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded view of the present invention.

[0013] Figure 2 It is a top view of the present invention.

[0014] Figure 3 It is a side structural diagram of the present invention.

[0015] Figure 4 It is a bottom view of the structure of the present invention.

[0016] Figure 5 It is the main transmission structure diagram of the present invention.

[0017] Figure 6 This is a structural diagram of the two-stage speed-increasing gear set of the present invention.

[0018] In the figure, 1-U-turn turntable, 2-second self-locking rod, 3-first self-locking rod, 4-circular guide rail, 5-first downward pedal, 6-second downward pedal, 7-first circular slide rail, 8-second circular slide rail, 9-first wedge-shaped slider, 10-second wedge-shaped slider, 11-secondary speed-increasing gear set, 12-rotating rod, 13-first limiting bracket, 14-second limiting bracket, 15-third limiting bracket, 16-fourth limiting bracket, 17-earth, 18-second compression spring, 19-first compression spring, 111-first-stage input gear, 112-first-stage output gear, 113-second-stage input gear, 114-second-stage output gear. DETAILED DESCRIPTION

[0019] like Figures 1 to 5As shown, a mechanical, automatic vehicle U-turn device that does not require resetting comprises a base 17 and a circular guide rail 4 mounted on the base 17. The base has symmetrical sidewalls with grooves. A U-turn disc 1 is mounted on the circular guide rail 4, and the U-turn disc 1 can rotate relative to the base 17 via the circular guide rail 4. A pair of symmetrical holes are formed in the sidewalls of the U-turn disc 1, each containing a first self-locking rod 3 and a second self-locking rod 2. The first self-locking rod 3 and the second self-locking rod 2 are connected to the U-turn disc 1 via a first compression spring 19 and a second compression spring 18, respectively. The first self-locking rod 3 and the second self-locking rod 2 can extend and retract within the holes, driving the compression springs in axial motion. Furthermore, a pair of symmetrical first and second push-down pedals 5 and 6 are mounted on the U-turn disc 1. The first and second push-down pedals 5 and 6 can each move up and down relative to the U-turn disc 1, but rotate together with the U-turn disc 1. The undersides of the pair of push-down pedals are respectively connected to a first circular slide rail 7 and a second circular slide rail 8, which move or rotate with the connected push-down pedals. A first wedge-shaped slider 9 and a second wedge-shaped slider 10 are respectively mounted on the pair of circular slide rails, which move up and down with the connected circular slide rails but can rotate relative to each other. A first limiting bracket 13, a second limiting bracket 14, a third limiting bracket 15, and a fourth limiting bracket 16 are respectively mounted on both sides of each wedge slider. The four limiting brackets are fixed to the ground 17 and cannot rotate or move. The limiting brackets are used to limit the rotation of the wedge slider, so that it can only move up and down, not rotate. The undersides of the pair of wedge sliders respectively cooperate with the two ends of a rotating rod 12 through inclined surfaces. When one of the pair of wedge sliders descends, it can push the rotating rod 12 to rotate a certain angle through the mating inclined surface. At the same time, the rotating rod 12 pushes the other wedge slider up through the other inclined surface. The rotating rod 12 is fixedly connected to the first-stage input gear of a two-stage speed-increasing gear set 11 and mounted together on the ground 17. The two gears are coaxial and can rotate together, but cannot move. The second-stage output gear of the two-stage speed-increasing gear set is fixedly connected to the turntable 1, and the two gears are coaxial and can rotate together. Through the two-stage speed-increasing gear set 11, a small rotation of the rotating rod can drive the turntable 1 to rotate 180 degrees.

[0020] like Figure 6As shown, the two-stage speed-increasing gear set consists of a first-stage input gear 111, a first-stage output gear 112, a second-stage input gear 113, and a second-stage output gear 114. The first-stage input gear 111 cooperates with the first-stage output gear 112. Rotation of the first-stage input gear 111 drives rotation of the first-stage output gear 112. The second-stage input gear 113 cooperates with the second-stage output gear 114. Rotation of the second-stage input gear 113 drives rotation of the second-stage output gear 114. The first-stage output gear 112 and the second-stage input gear 113 are fixedly connected and mounted on the ground 17. The two can rotate together and cannot move. Rotation of the first-stage output gear 112 drives rotation of the second-stage input gear 113.

[0021] Assume that in the initial state, the first push-down pedal 5 is on the side away from the device entrance, and the second push-down pedal 6 is on the side close to the device entrance. At this time, the first push-down pedal 5 is higher than the U-turn turntable 1, and the second push-down pedal 6 is level with the U-turn turntable 1.

[0022] When the first car enters, it first passes over the second push-down pedal 6, but this does not work. After the car has fully driven onto the turntable, it depresses the first push-down pedal 5, which descends along with the attached first circular rail 7, pushing the first wedge-shaped slider 9 downward. This in turn, via the inclined surface, rotates the rotating rod 12. The first wedge-shaped slider 9, restricted by the limit bracket, can only move up and down, not rotate. The rotating rod 12 then rotates the U-turn turntable 1 via the secondary speed-increasing gear set 11, driving the first and second self-locking rods 3 and 2 on the turntable's sidewalls out of the grooves along the sidewalls of the ground 17, completing the unlocking process. At this point, the first and second compression springs 19 and 18 are compressed. During this process, the second wedge-shaped slider 10 at the other end of the rotating rod 12, pushed by the inclined surface of the rotating rod 12, rises, pushing the second circular rail 8 and the second push-down pedal 6 upward.

[0023] When the turning turntable 1 pushes the pressing pedal and the circular slide rail to rotate, the wedge-shaped slider is sleeved on the circular slide rail and can rotate along the circular slide rail, so it will not get stuck.

[0024] When any of the depression pedals is not under force, the compression spring and the limit rod will not slide out of the groove. Only when the car presses down a certain depression pedal to push the U-turn turntable 1 to rotate, the compression spring and the limit rod will slide out of the groove.

[0025] After the U-turn is completed, the first and second push-down pedals 5 and 6 are swapped. The second push-down pedal 6 is now higher than the U-turn disc, and the first push-down pedal 5 is flush with the U-turn disc 1. The first and second self-locking rods 3 and 2 on the side wall of the turntable slide into the other side groove of the side wall of the ground 17 corresponding to the original groove under the action of the first and second compression springs 19 and 18, completing the self-locking.

[0026] When the second vehicle enters, the second depression pedal 6 is depressed, causing the device to move in the opposite direction to when the first depression pedal 5 is depressed, and the U-turn turntable 1 rotates in the opposite direction. After the second vehicle completes the U-turn, the device returns to its initial state. The above operation is repeated for the next vehicle to enter.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments and that various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A mechanical vehicle automatic U-turn device that does not require resetting, characterized by: The invention comprises a ground (17) and a circular guide rail (4) mounted on the ground (17), wherein the side wall of the ground (17) is symmetrically provided with grooves, and a U-turn disc (1) is mounted on the circular guide rail (4), and a pair of holes are symmetrically opened on the side wall of the U-turn disc (1), wherein a first self-locking rod (3) and a second self-locking rod (2) are respectively arranged in the holes, and the first self-locking rod (3) and the second self-locking rod (2) are respectively connected to the U-turn disc (1) through a first compression spring (19) and a second compression spring (18), and at the same time, a pair of first pressing pedals (5) and a second pressing pedal (6) are symmetrically mounted on the U-turn disc (1), and the lower sides of the pair of pressing pedals are respectively fixedly connected to a first circular slide rail (7) and a second circular slide rail (8), and the first circular slide rail (7) and the second circular slide rail (8) are respectively fixed to the lower sides of the pair of pressing pedals. ) move or rotate together with the connected downward pedal respectively; a first wedge-shaped slider (9) and a second wedge-shaped slider (10) are respectively installed on the pair of circular slide rails, and a first limit bracket (13), a second limit bracket (14), a third limit bracket (15), and a fourth limit bracket (16) are respectively installed on both sides of each wedge-shaped slider, and the four limit brackets are fixedly connected to the ground (17). The lower sides of the pair of wedge-shaped sliders are respectively matched with the two ends of a rotating rod (12) through inclined surfaces. The rotating rod (12) is fixedly connected to the first-stage input gear (111) of a two-stage speed-increasing gear set (11) and installed on the ground (17) together, and the two are coaxial. The second-stage output gear (114) of the two-stage speed-increasing gear set (11) is fixedly connected to the U-turn turntable (1), and the two are coaxial.

2. The mechanical automatic U-turn device for automobiles without resetting according to claim 1, characterized in that: The pair of wedge-shaped sliders are symmetrically arranged and matched with the rotating rod (12) through an inclined surface. When one wedge-shaped slider descends, it pushes the rotating rod (12) to rotate a certain angle. At the same time, the other end of the rotating rod (12) pushes the other wedge-shaped slider up through the inclined surface.

3. The mechanical automatic U-turn device for automobiles without resetting according to claim 1, characterized in that: The pair of wedge-shaped sliding blocks are mounted on a pair of circular slide rails and can rotate relatively along the circular slide rails.

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