A two-stage guide plate for vehicle

Abstract

The utility model discloses a two -stage guide plate for vehicle can telescopic ground installation on main body frame, include: primary guide plate, two -stage guide plate, mobile support, drive mechanism and telescopic drive mechanism, mobile support with drive mechanism drive connection is in main body frame, and mobile support is driven by drive mechanism and makes reciprocating linear motion relative to main body frame, primary guide plate with mobile support rotates and connects, two -stage guide plate both sides are installed below primary guide plate through telescopic drive mechanism respectively, and two -stage guide plate is driven by telescopic drive mechanism and makes telescopic motion relative to primary guide plate. The utility model discloses only through a set of drive mechanism and telescopic drive mechanism can cooperate and drive two -stage guide plate to realize reliable, efficient guide plate telescopic motion, and the overall operation speed has been improved greatly and reduced manufacturing cost.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and specifically relates to a two-stage guide plate for vehicles. Background Technology

[0002] Currently, public transportation still has significant shortcomings in meeting the barrier-free access needs of people with mobility impairments, such as wheelchair users. In the case of buses, although low-floor vehicles reduce steps, the height difference between the bus and the platform still poses an obstacle. Traditional temporary ramps or manual assistance methods are inefficient, unsafe, and cannot guarantee user autonomy. This pain point is also prevalent in other passenger transport scenarios: for example, in railway passenger transport, there is an insurmountable gap and height difference between the carriage floor and the platform; airport shuttle buses and tourist buses have even greater height differences at their entrances, often completely lacking barrier-free boarding and alighting conditions.

[0003] Existing solutions suffer from three main shortcomings: First, detachable ramps rely on manual handling, making them inconvenient to use and difficult to store, hindering standardized and integrated efficient connections. Second, manually tilting ramps still require manual assistance, limiting their convenience. Third, while integrated platform-type electric ramps can operate automatically, they require significant vehicle installation space, limiting their versatility. Therefore, there is an urgent need for an intelligent barrier-free transition device that is universally applicable across vehicle models, can be automatically and reliably deployed and retracted, and occupies less space, to systematically solve the common problem of "last-mile" connection. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a two-stage guide plate for vehicles. It can drive the two-stage guide plate to achieve reliable and efficient guide plate telescopic movement through only one set of drive mechanism and telescopic transmission mechanism, which greatly improves the overall operating speed and reduces manufacturing costs.

[0005] The main technical solution adopted in this utility model is as follows: A two-stage guide plate for vehicles, retractably mounted on a main frame, includes: a primary guide plate, a secondary guide plate, a movable bracket, a drive mechanism, and a telescopic transmission mechanism. The movable bracket is driven to the main frame by the drive mechanism, and the drive mechanism drives the movable bracket to reciprocate linearly relative to the main frame. The primary guide plate is rotatably connected to the movable bracket. The two sides of the secondary guide plate are respectively mounted below the primary guide plate through the telescopic transmission mechanism, and the telescopic transmission mechanism drives the secondary guide plate to telescopically move relative to the primary guide plate.

[0006] Preferably, the telescopic transmission mechanism includes two traction wheels and a flexible transmission component. The two traction wheels are installed on the side plate of the primary guide plate along the telescopic direction and are rolled and supported in the guide groove of the side plate of the secondary guide plate to support the secondary guide plate. The flexible transmission component is installed between the two traction wheels, and both ends of the flexible transmission component are fixedly connected to the secondary guide plate and the main frame, respectively.

[0007] Preferably, the two sides of the main frame are respectively connected to the flexible transmission component via rocker arm assemblies. The rocker arm assembly includes a guide groove plate, a rocker arm, and a clamping block I. The guide groove plate is installed at the front end of the main frame. One end of the rocker arm is rotatably connected to the guide groove of the guide groove plate, and the other end is rotatably connected to one end of the clamping block I. The clamping block I is fixedly connected to the flexible transmission component.

[0008] Preferably, the bottom of both side plates of the primary guide plate is provided with an arc-shaped guide surface, and the front ends of both sides of the main frame are provided with guide wheels. The guide wheels roll against the bottom of the side plates of the primary guide plate to provide guidance and support for the primary guide plate.

[0009] Preferably, the primary guide plate and the movable support are connected by a hinge assembly. The hinge assembly includes a transition plate, a plurality of locking blocks and a plurality of locking wheels. The front and rear sides of the transition plate are respectively hinged to the movable support and the rear end of the primary guide plate. The plurality of locking blocks are disposed on the bottom surface of the transition plate. The plurality of locking wheels are installed at the front end of the main frame and located below the transition plate, corresponding one-to-one with the locking blocks. The locking blocks are provided with arc-shaped grooves that correspond to and cooperate with the outer peripheral surface of the locking wheels.

[0010] Preferably, the driving mechanism includes a rack, a gear, and a driving component. The rack is arranged on the main frame along the extension direction, the gear is meshed with the rack, and the driving component is drivenly connected to the gear and fixedly installed on the movable bracket.

[0011] Beneficial effects: This utility model provides a two-stage guide plate for vehicles, which has the following advantages: (1) This utility model uses only one drive mechanism to drive the moving bracket, which synchronously drives the first-stage guide plate to extend. By utilizing the cooperation of the traction wheel installed on it and the flexible transmission component, the linear motion of the first-stage guide plate is converted into the extension motion of the second-stage guide plate relative to the first-stage guide plate. The two-stage guide plates can thus unfold and retract in sequence and in a coordinated manner. During this process, the second-stage guide plate extends and retracts synchronously with the first-stage guide plate, while also extending and retracting relative to the first-stage guide plate, thereby significantly accelerating the overall extension and retraction speed and achieving the technical effects of simple structure, high efficiency and low cost.

[0012] (2) This utility model can automatically achieve leveling and end tilting guidance after the guide plate is unfolded by the cooperation of rocker assembly, arc guide surface and guide wheel, forming a flat, stable and smooth barrier-free slope.

[0013] (3) This utility model adopts a purely mechanical hinge locking assembly, which can automatically lock by gravity when the guide plate is unfolded, effectively preventing accidental retraction caused by drive failure, and has high safety and reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model (in its stored state); Figure 2 This is a cross-sectional view of the overall structure of the present invention (in its stored state). Figure 3 This is a schematic diagram of the overall structure of the present invention (in unfolded state); Figure 4 This is a schematic diagram of the telescopic transmission mechanism of this utility model. Figure I ; Figure 5 This is a partial structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the rocker assembly structure of this utility model; Figure 7 This is a schematic diagram of the hinge assembly structure of this utility model; Figure 8 This is a schematic diagram of the drive mechanism of this utility model; Figure 9 This is a partial installation diagram of the primary guide plate and the secondary guide plate of this utility model; In the diagram: Main frame 1, guide wheel 1-1, primary guide plate 2, side plate 2-1, arc-shaped guide surface 2-11, secondary guide plate 3, side plate guide groove 3-1, clamping block II 3-2, moving bracket 4, drive mechanism 5, rack 5-1, gear 5-2, drive component 5-3, telescopic transmission mechanism 6, traction wheel 6-1, flexible transmission component 6-2, rocker assembly 7, guide groove plate 7-1, guide groove 7-11, rocker 7-2, clamping block I 7-3, hinge assembly 8, transition plate 8-1, locking block 8-2, arc-shaped groove 8-21, locking wheel 8-3, baffle 9, auxiliary support wheel 10, cover plate 11. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Example 1

[0016] like Figure 1-3 As shown, this embodiment provides a two-stage guide plate for vehicles, which is retractably mounted on the main frame 1. It includes: a primary guide plate 2, a secondary guide plate 3, a movable bracket 4, a drive mechanism 5, and a telescopic transmission mechanism 6. The movable bracket 4 is driven to the main frame 1 by the drive mechanism 5, and the drive mechanism 5 drives the movable bracket 4 to telescopically move relative to the main frame 1. The primary guide plate 2 is rotatably connected to the movable bracket. The two sides of the secondary guide plate 3 are respectively mounted below the primary guide plate 2 through the telescopic transmission mechanism 6, and the telescopic transmission mechanism 6 drives the secondary guide plate 3 to telescopically move relative to the primary guide plate 2.

[0017] In this embodiment 1, as Figure 4 and 9 As shown, the telescopic transmission mechanism 6 includes two traction wheels 6-1 and a flexible transmission component 6-2. The two traction wheels 6-1 are installed on the side plate 2-1 of the primary guide plate 2 along the telescopic direction and are rolled and supported in the side plate guide groove 3-1 of the secondary guide plate 3 to support the secondary guide plate 3. The flexible transmission component 6-2 is installed between the two traction wheels 6-1, and both ends of the flexible transmission component 6-2 are fixedly connected to the secondary guide plate 3 and the main frame 1, respectively.

[0018] To improve the stability of the movement between the primary guide plate 2 and the secondary guide plate 3, the side plates of the primary guide plate 2 and the secondary guide plate 3 are fitted together by auxiliary support wheels 10, which are used to provide effective support for the primary guide plate 2 and the secondary guide plate 3 and ensure that the primary guide plate 2 and the secondary guide plate 3 can slide stably relative to each other.

[0019] In this invention, the traction wheel 6-1 and the flexible transmission component 6-2 cooperate to achieve transmission. Specifically, the flexible transmission component 6-2 can be in the form of, for example, a synchronous belt, chain, or wire rope, and the traction wheel 6-1 is correspondingly configured as a matching pulley, sprocket, or rope pulley.

[0020] The working principle of the telescopic transmission mechanism 6 is as follows: The upper and lower sides of the flexible transmission component 6-2 are fixedly connected to the secondary guide plate 3 and the main frame 1, respectively. When the two traction wheels 6-1 installed on the primary guide plate 2 move forward (or backward) synchronously with the primary guide plate 2, they will pull the flexible transmission component 6-2, which is tensioned between them, to move. Since the two ends of the flexible transmission component 6-2 are fixed, its movement will be directly converted into the extension or retraction of the secondary guide plate 3 relative to the primary guide plate 2, thereby realizing the telescopic movement of the secondary guide plate.

[0021] In this embodiment 1, as Figure 6 As shown, the two sides of the main frame 1 are connected to the flexible transmission component 6-2 through the rocker assembly 7. The rocker assembly 7 includes a guide plate 7-1, a rocker 7-2, and a clamping block I 7-3. The guide plate 7-1 is installed at the front end of the main frame 1. One end of the rocker 7-2 is rotatably connected to the guide groove 7-11 of the guide plate 7-1, and the other end is rotatably connected to one end of the clamping block I 7-3. The clamping block I 7-3 is fixedly connected to the flexible transmission component 6-2.

[0022] In this invention, the rocker arm assembly 7 functions as follows: The rocker arm 7-2 can move along the guide groove 7-11 under the drive of the flexible transmission component 6-2, allowing the clamping block I 7-3 on the rocker arm 7-2 to extend out of the main frame 1, ensuring that the flexible transmission component 6-2 connecting the clamping block I, the primary guide plate 2, and the secondary guide plate 3 are on the same unfolding plane. During the extension process, the rocker arm 7-2 first extends from the rear end of the guide groove 7-11 (e.g., ...). Figure 1 Move to the front end of guide groove 7-11 (e.g.) Figure 6 Subsequently, under the limiting position of rocker arm 7-2, the primary guide plate 2 and the secondary guide plate 3 extend relative to each other via the telescopic transmission mechanism 6. During the retrieval process, rocker arm 7-2 first moves from the front end of guide groove 7-11 (e.g., Figure 1 Move to the rear end of guide 7-11 (e.g.) Figure 6 Subsequently, under the limit of the rocker arm 7-2, the primary guide plate 2 and the secondary guide plate 3 undergo relative retraction motion through the telescopic transmission mechanism 6.

[0023] In this embodiment 1, as Figure 5 As shown, the bottom of both side plates 2-1 of the primary guide plate 2 is provided with arc-shaped guide surfaces 2-11, and the front ends of both sides of the main frame 1 are provided with guide wheels 1-1. The guide wheels 1-1 roll and abut against the bottom of the side plates of the primary guide plate 2 to provide guidance and support for the primary guide plate 2. The curvature of the arc-shaped guide surfaces is designed according to the preset slope of the primary guide plate 2 after it extends.

[0024] During the extension and retraction process, the bottom of the side plate 2-1 rolls in contact with the guide wheel 1-1. When the first-stage guide plate 2 retracts or initially extends, the guide wheel abuts against the non-arc guide surface section at the bottom of the side plate 2-1, allowing the first-stage guide plate 2 to move relatively parallel to the main frame 1. When the first-stage guide plate 2 extends beyond the main frame 1 to a certain position, the guide wheel 1-1 begins to contact the arc guide surface 2-11, guiding the first-stage guide plate 2 to gradually tilt downwards until it stably reaches the preset extension position. The same applies during retraction.

[0025] In this embodiment 1, in order to improve the safety of the guide plate and the stability of the overall structure, such as Figure 7 As shown, the primary guide plate 2 and the movable support 4 can be connected by a hinge assembly. The hinge assembly 8 includes a transition plate 8-1, several locking blocks 8-2 and several locking wheels 8-3. The front and rear sides of the transition plate 8-1 are respectively hinged to the movable support 4 and the rear end of the primary guide plate 2. Several locking blocks 8-2 are set on the bottom surface of the transition plate 8-1. Several locking wheels 8-3 are installed at the front end of the main frame 1 and located below the transition plate 8-1, corresponding one-to-one with the locking blocks. The locking blocks 8-2 are provided with arc-shaped grooves 8-21, which correspond to and cooperate with the outer peripheral surface of the locking wheels 8-3.

[0026] When the transition plate 8-1 is tilted and unfolded to connect the main frame 1 and the primary guide plate 2, the locking block 8-2 presses against the locking wheel 8-3 under its own weight and the load (such as the weight of a wheelchair). If the guide plate tends to retract unexpectedly due to a drive malfunction or lack of locking, interference will occur between the arc-shaped groove 8-21 and the locking wheel 8-3, effectively preventing the primary guide plate 2 from retracting, thus ensuring passenger safety. In addition, the locking wheel 8-3, through its cooperation with the locking block 8-2, also provides auxiliary support for the transition plate 8-1, further improving the overall stability of the transition section. This utility model, through the above-mentioned purely mechanical safety locking structure, can automatically prevent the guide plate from retracting unexpectedly in the unfolded state, ensuring the safety and reliability of barrier-free passage.

[0027] In this embodiment 1, as Figure 8 As shown, the drive mechanism 5 includes a rack 5-1, a gear 5-2, and a drive member 5-3. The rack 5-2 is mounted on the main frame 1 along the telescopic direction. The gear meshes with the rack. The drive member 5-3 is driven by the gear 5-2 and is fixedly mounted on the movable bracket 4. The movable bracket 4 can follow the drive member 5-3 and the gear 5-2 in a linear translational motion along the rack 5-1. The drive member 5-3 can be a gear drive device, including but not limited to a motor.

[0028] In this invention, the drive mechanism 5 is used to drive the movable support 4 to perform a forward and backward linear translational motion along a preset direction. Existing drive devices capable of achieving linear reciprocating motion are all applicable.

[0029] The working principle of this utility model is as follows: When the two-stage guide plates unfold, the drive mechanism 5 is activated, driving the gear 5-2 to rotate. Since the gear 5-2 meshes with the rack 5-1 fixed on the main frame 1, the rotation of the gear drives the drive component 5-3 and the movable bracket 4, which are fixed to it, to move together toward the front end of the main frame 1.

[0030] The movable bracket 4 then pushes the primary guide plate 2, which is hinged to it, forward. Through the rolling support on the side, the secondary guide plate 3 moves forward synchronously with the primary guide plate 2. At the same time, the traction wheel 6-1 installed on the primary guide plate 2 moves forward, and the flexible transmission component 6-2 tensioned between the traction wheels starts to work, driving the secondary guide plate 3 to extend outward relative to the primary guide plate 2.

[0031] The aforementioned extension process continues until the rocker arm 7-2, connected to the secondary guide plate 3, moves to its foremost position along the guide groove 7-11 on the guide plate 7-1. At this point, the rocker arm 7-2 pushes the clamping block I 7-3 to fully extend from the main frame 1, ensuring that the flexible transmission component 6-2, the primary guide plate 2, and the secondary guide plate 3 are ultimately on the same unfolding plane. Simultaneously, guided by the arc-shaped guide surface 2-11 at the bottom of its side plate and the guide wheel 1-1 on the main frame, the primary guide plate 2 gradually tilts downward to the preset working position, thus completing the full unfolding action of the two-stage guide plates.

[0032] The process of storing the two-stage guide plates is the reverse of the unfolding process described above.

[0033] The two-stage guide plate disclosed in this utility model is integrated and installed on the main frame, and can be combined with the cover plate for installation on a vehicle. The cover plate can serve as part of the vehicle floor, and the main frame and the cover plate are slidably connected using a separate structure. In case of malfunction, the main frame can be pulled out from under the cover plate by disassembling the connector between the main frame and the vehicle. The cover plate remains as part of the vehicle floor and does not affect the normal use of the vehicle. In this embodiment 1, as... Figure 3 As shown, a baffle 9 is also hinged to the top of the front end of the cover plate, which is used to transition between the main frame 1 and the first-level guide plate 2, forming a complete and stable load-bearing slope with the first-level guide plate 2 and the second-level guide plate 3.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A two-stage guide plate for vehicles, retractably mounted on a main frame, characterized in that, include: The system includes a primary guide plate, a secondary guide plate, a movable support, a drive mechanism, and a telescopic transmission mechanism. The movable support is driven to the main frame by the drive mechanism, which drives the movable support to reciprocate linearly relative to the main frame. The primary guide plate is rotatably connected to the movable support. The two sides of the secondary guide plate are respectively installed below the primary guide plate through the telescopic transmission mechanism, and the telescopic transmission mechanism drives the secondary guide plate to telescopically move relative to the primary guide plate.

2. The two-stage guide plate for vehicles according to claim 1, characterized in that, The telescopic transmission mechanism includes two traction wheels and a flexible transmission component. The two traction wheels are installed on the side plate of the first-stage guide plate along the telescopic direction and are rolled and supported in the guide groove of the side plate of the second-stage guide plate to support the second-stage guide plate. The flexible transmission component is installed between the two traction wheels, and both ends of the flexible transmission component are fixedly connected to the second-stage guide plate and the main frame, respectively.

3. The two-stage guide plate for vehicles according to claim 2, characterized in that, The main frame is connected to the flexible transmission component on both sides by rocker arm assemblies. The rocker arm assembly includes a guide plate, a rocker arm, and a clamping block I. The guide plate is installed at the front end of the main frame. One end of the rocker arm is rotatably connected to the guide groove of the guide plate, and the other end is rotatably connected to one end of the clamping block I. The clamping block I is fixedly connected to the flexible transmission component.

4. The two-stage guide plate for vehicles according to claim 1, characterized in that, The bottom of both sides of the primary guide plate is provided with an arc-shaped guide surface, and the front ends of both sides of the main frame are provided with guide wheels. The guide wheels roll and abut against the bottom of the side plates of the primary guide plate to provide guidance and support for the primary guide plate.

5. The two-stage guide plate for vehicles according to claim 1, characterized in that, The primary guide plate and the movable support are connected by a hinge assembly. The hinge assembly includes a transition plate, several locking blocks, and several locking wheels. The front and rear sides of the transition plate are respectively hinged to the movable support and the rear end of the primary guide plate. Several locking blocks are disposed on the bottom surface of the transition plate, and several locking wheels are installed at the front end of the main frame and located below the transition plate, corresponding one-to-one with the locking blocks. The locking blocks are provided with arc-shaped grooves that correspond to and cooperate with the outer peripheral surface of the locking wheels.

6. The two-stage guide plate for vehicles according to claim 1, characterized in that, The driving mechanism includes a rack, a gear, and a driving component. The rack is arranged on the main frame along the extension direction. The gear meshes with the rack. The driving component is driven by the gear and is fixedly installed on the movable bracket.

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