Double-layer intelligent step

Abstract

The invention discloses a double-layer intelligent step. The double-layer intelligent step comprises a first-stage electric step and a second-stage fixed step located above the first-stage electric step. The first-stage electric step comprises a connecting rod telescopic mechanism and a first-stage pedal assembly; the connecting rod telescopic mechanism comprises a connecting rod mechanism and a driving part for driving the connecting rod mechanism to operate; the connecting rod mechanism is connected between the second-stage fixed step and the first-stage pedal assembly; under the driving of the connecting rod telescoping mechanism, the first-stage pedal assembly freely telescopically moves between the lower position of the second-stage fixed step and the front lower position of the second-stage fixed step. According to the invention, two-step stepping is realized, the get-on span is reduced, and the requirements of more users are met.

Description

Technical Field

[0001] The invention relates to the field of automobile parts manufacturing, in particular to a double-layer intelligent step. Background Art

[0002] As people's living standards improve, more and more people choose cars as a means of transportation. At present, high-low SUVs and off-road vehicles need to be equipped with pedaling side steps on both sides of the car due to their high chassis, so that the pedalers can enter the car with the help of the pedaling side steps.

[0003] However, existing vehicles often use a single-layer step structure with fixed height for the pedaling side steps. This single-layer step only has a single height variation, which cannot effectively address large height differences. If the required height is high, the single-layer step is too high, making it difficult for people to get on and off, making it inconvenient and unsafe to use, especially for children, the elderly, or people with limited mobility. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-layer intelligent step that can provide a two-step side step, which can relatively reduce the height of each step during the boarding process and improve the comfort during the boarding process. The present invention has a simple structure and lower cost.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A double-layer intelligent step, comprising a first-level electric step and a second-level fixed step located above the first-level electric step;

[0007] The first-level electric step includes a connecting rod telescopic mechanism and a first-level pedal assembly; the connecting rod telescopic mechanism includes a connecting rod mechanism and a driving component for driving the connecting rod mechanism; the connecting rod mechanism is connected between the second-level fixed step and the first-level pedal assembly;

[0008] Driven by the connecting rod telescopic mechanism, the first-stage pedal assembly can be freely telescopically moved between a position below the second-stage fixed step and a position below the front of the second-stage fixed step.

[0009] Furthermore, the linkage mechanism includes an active four-bar linkage and a driven four-bar linkage that are distributed side by side; the driving component is a driving motor; and the driving motor is connected to the active four-bar linkage.

[0010] Furthermore, the first-level pedal assembly includes a first-level pedal frame; a cover plate 1 is provided at the upper end of the first-level pedal frame; and an end cover 1 is provided at each of the left and right ends of the first-level pedal frame.

[0011] Furthermore, the first-level pedal frame is an aluminum profile frame, and the cover plate 1 and the end cover 1 are both made of plastic.

[0012] Furthermore, the secondary fixed step comprises a secondary pedal frame; a second cover plate is provided at the upper end of the secondary fixed step; and a second end cover is provided at each of the left and right ends of the secondary fixed step;

[0013] The connecting rod mechanism is connected with the first-level pedal frame and the second-level pedal frame.

[0014] Furthermore, the secondary pedal frame is a steel plate frame.

[0015] Furthermore, a steel plate support frame is also provided in the steel plate skeleton.

[0016] Furthermore, the steel plate skeleton is a stamped part.

[0017] Furthermore, the secondary pedal frame is also connected to a body mounting bracket for connecting to the body.

[0018] Compared with the prior art, the present invention provides a double-layer intelligent step, which has the following beneficial effects:

[0019] The dual-layered intelligent step in this invention features a first-stage tread assembly that freely moves between a position below and a position below and in front of the second fixed step, changing the state of the dual-layered intelligent step. When not in use, the first-stage tread assembly is concealed beneath the second fixed step, reducing the overall width of the vehicle.

[0020] The double-layered intelligent step in this invention not only meets the functions of a fixed side step but also realizes the advantages of an electric side step, providing convenience for users of high-floor vehicles. Based on the original single-layer step, a second-layer step is realized. When installed on a high-floor vehicle, the double-layered intelligent step can reduce the step distance when entering the vehicle, meeting the needs of a wider range of users, especially those who have difficulty getting on the vehicle, such as the elderly, children, and pregnant women. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the double-layer intelligent step in the present invention (in the unfolded state).

[0022] Figure 2 It is a three-dimensional diagram of the double-layer intelligent step in the present invention (folded state).

[0023] Figure 3 It is a bottom view of the double-layer intelligent step in the present invention (folded state).

[0024] Figure 4 It is a side sectional view of the double-layer intelligent step in the present invention (folded state).

[0025] Figure 5 It is a side sectional view of the first-stage pedal assembly of the present invention.

[0026] Figure 6 It is a three-dimensional diagram of the first-stage pedal assembly in the present invention.

[0027] Figure 7 It is a schematic diagram of the first-level electric stepping structure in the present invention.

[0028] Figure 8 Schematic diagram of the connection structure between the connecting rod and the first-stage pedal frame in the present invention.

[0029] In the picture:

[0030] 100-first level electric step, 200-second level fixed step;

[0031] 101-first pedal frame, 102-cover plate 1, 103-end cover 1;

[0032] 201-secondary pedal frame, 202-cover plate 2, 203-end cover 2, 204-steel plate support frame;

[0033] 301-main fixed bracket, 302-connecting rod front end, 303-driving motor, 304-slave fixed bracket;

[0034] 400-Body mounting bracket, 401-T-block, 402-Hexagon socket bolt. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] like Figure 1-Figure 5 As shown, the present invention provides a double-layer intelligent step. This double-layer intelligent step comprises a first-level electric step 100 and a second-level fixed step 200 located above the first-level electric step 100. The first-level electric step 100 includes a connecting rod telescopic mechanism and a first-level pedal assembly. Driven by the connecting rod telescopic mechanism, the first-level pedal assembly can freely telescope between a position below the second-level fixed step 200 and a position below and in front of the second-level fixed step 200. Figure 5 、 6 It is a structural diagram of the first-stage pedal assembly.

[0037] The connecting rod telescopic mechanism includes a connecting rod mechanism and a driving component that drives the connecting rod mechanism to operate. The driving component drives the connecting rod mechanism to extend and retract, thereby driving the first-stage pedal assembly to freely extend and retract between the position below the second-stage fixed step 200 and the position below the second-stage fixed step 200. Specifically, Figure 1This is a top view of the double-layer smart step in the unfolded state. Figure 1 In the embodiment, the first-stage pedal assembly is located at the front lower position of the second-stage fixed step 200 , and three vehicle body mounting brackets 400 are connected to the rear end of the second-stage fixed step 200 . Figure 2-4 In the figure, the double-layer intelligent step is in the retracted state, that is, the first-level pedal assembly is located below the second-level fixed step 200.

[0038] In this embodiment, the driving component that provides power for the movement of the connecting rod mechanism is the drive motor 303. In the first-level electric stepper 100, the drive motor 303 drives the connecting rod mechanism, thereby enabling the first-level pedal assembly to move between a position below the second-level fixed stepper 200 and a position below and in front of the second-level fixed stepper 200, ultimately enabling the double-layer intelligent stepper to switch between an expanded state and a collapsed state.

[0039] In the double-layer intelligent step, the second-level fixed step 200 and the first-level electric step 100 are distributed up and down. Figure 1 As shown, the first-stage electric step 100 is freely extended and located in front of and below the second-stage fixed step 200. To step on it, the user first steps onto the lower first-stage electric step 100, then onto the higher second-stage fixed step 200, before entering the vehicle. In the extended state (with the first-stage step assembly located in front of and below the second-stage fixed step 200), the two-layer intelligent step is stepped. The height difference between the upper end surface of the first-stage step assembly and the upper end surface of the second-stage fixed step 200 reduces the stepping distance when entering the vehicle.

[0040] In this embodiment of the dual-layer intelligent step structure, the upper second-level fixed step 200 is secured to the vehicle body via three vehicle body mounting brackets 400, while the first-level electric step 100 and the second-level fixed step 200 are connected via a linkage mechanism. The vehicle body mounting bracket 400 is stamped from steel sheet, with one end connected to the second-level step frame 201 of the second-level fixed step 200 and the other end fixed to the vehicle chassis.

[0041] Specifically, in this embodiment, the linkage mechanism includes an active four-bar linkage mechanism and a driven four-bar linkage mechanism that are arranged side by side. Figure 7 As shown, after the drive motor 303 is powered by the controller, it drives the active four-bar linkage to perform telescopic movement. Under the action of the drive motor 303, the linkage mechanism is driven to drive the first-level electric step 100 to freely telescopically move between a position below the second-level fixed step 200 and a position below and in front of the second-level fixed step 200.

[0042] When it is necessary to step on the first stage electric step 100, the first stage pedal assembly can be freely extended and displayed at the front and lower part of the second stage fixed step 200 (such as Figure 1When pedaling is not required, it can be freely retracted and hidden under the second-level fixed step 200 (as shown in FIG. Figure 4 As shown), it does not take up space and can meet various needs. It is a new double-layer intelligent step with fixed steps and electric steps.

[0043] Specifically, in this embodiment, the linkage mechanism includes two four-bar linkage mechanisms, namely, an active four-bar linkage mechanism and a driven four-bar linkage mechanism. Moreover, the active four-bar linkage mechanism and the driven four-bar linkage mechanism are arranged side by side, as shown in FIG. Figure 7 shown.

[0044] In this embodiment, all components other than the standard parts in the four-bar linkage are die-cast from A380 aluminum alloy. The apertures connecting the components are CNC-machined, and 304 stainless steel connecting pins are used for connection. The fit between the bushing and the connecting pin ensures self-lubrication and silence during rotation. The drive motor 303 is the power source. When energized, it drives the four-bar linkage. Hall effect feedback from the motor monitors the motor's operation, controlling the mechanism's operating limits.

[0045] In the retracted state, the first-level electric step 100 is stored under the second-level fixed step 200. During use, after the car door is opened, the drive motor 303 drives the active four-bar linkage to operate, and the first-level pedal assembly also moves forward under the drive of the active four-bar linkage. Under the force of the forward movement of the first-level pedal assembly, the driven four-bar linkage also moves together, thereby satisfying the balance of two fulcrums on the first-level electric step 100, so that passengers can step on it comfortably when getting on the car, without feeling unsafe such as tilting or falling. When the car door is closed, the drive motor 303 drives the active four-bar linkage to operate in the opposite direction, and the first-level pedal assembly is also retracted under the drive of the active four-bar linkage; the driven four-bar linkage also retracts under the force of the reverse movement of the first-level pedal assembly, and finally the first-level electric step 100 is stored under the second-level fixed step 200.

[0046] This double-layered intelligent step not only meets the functions of a fixed side step but also realizes the advantages of an electric side step. Based on the original single-stage step, a second-stage step is realized. When installed on a high-floor vehicle, this double-layered intelligent step can reduce the distance required to board the vehicle, meeting the needs of a wider range of users, especially those who have difficulty boarding, such as the elderly, children, and pregnant women.

[0047] Furthermore, the retractable first-stage electric step 100 can be easily integrated with the vehicle's existing systems to maximize its usability. For example, the drive motor 303 is connected to the vehicle's electrical system via an ECU controller. When the vehicle door is opened, the vehicle's door-opening signal is sent to the controller, which drives the motor to extend the first-stage pedal assembly in the first-stage electric step 100. When the vehicle door is closed, the vehicle's door-closing signal is sent to the controller, which drives the motor to retract the first-stage pedal assembly in the first-stage electric step 100.

[0048] Preferably, in this embodiment, the secondary fixed step 200 is mainly composed of a secondary pedal frame 201, a cover plate 202, a steel plate support frame 204, two end caps 203 and standard parts (such as spring nuts, buckles, self-tapping screws and other connectors). Among them, the secondary pedal frame 201 is a steel plate frame, which is stamped and formed and then welded and assembled with 8 steel plate support frames 204 of different sizes, and then shot blasted and electrophoretically treated after welding. The cover plate 202 and the two end caps 203 on the left and right sides are all injection molded parts. The cover plate 202 is fixed to the upper layer of the secondary pedal frame 201 by buckles; the two end caps 203 are inserted into the reed nuts and fixed to the secondary pedal frame 201 by self-tapping screws, thereby being locked to the left and right ends of the secondary pedal frame 201 respectively.

[0049] In this embodiment, the secondary pedal skeleton 201 is stamped and formed to meet various required avoidance, positioning holes, avoidance gaps or concave and convex shapes to increase strength; by welding with the steel plate support frame 204, it not only meets the strength requirements of the side step, but also achieves the lightweight of the side step. The steel plate support frame 204 is stamped and formed to meet the support and connection requirements of different areas of the secondary pedal skeleton 201, and enhances the support strength of the secondary pedal skeleton 201. Cover plate 202 is injection molded using TPV material. The exterior surface of the product can be shaped in various requirements. The surface is treated with leather grain corrosion to meet different appearance effect requirements. It is fixed to the steel plate skeleton with standard parts such as clips and screws. End cover 203 is made of PP+EPDM-TD20 material. The exterior surface of the product can be shaped in various requirements. The surface is treated with leather grain corrosion to meet different appearance effect requirements. It is fixed to the steel plate skeleton with standard parts such as reed nuts and self-tapping screws.

[0050] Preferably, the first-stage pedal assembly in this embodiment is mainly composed of a first-stage pedal frame 101, a cover plate 102 and two end caps 103. Figure 5 and Figure 6As shown. Cover plate 102 and end cap 103 are both injection molded parts, and the first-stage pedal frame 101 is an aluminum alloy frame. Cover plate 102 is fixed to the upper layer of the first-stage pedal frame 101 by snap-fit connection. A T-slot is provided at the rear end of the first-stage pedal frame 101. During assembly, first, insert one end cap 103 into three reed nuts, insert it into one end of the first-stage pedal frame 101, and screw it to the left end of the first-stage pedal frame 101 with self-tapping screws. Then, insert the T-block into the T-slot from the side opening of the T-slot. After that, insert the other end cap 103 into the right end of the first-stage pedal frame 101 with three reed nuts, and screw it to the right end of the first-stage pedal frame 101 with self-tapping screws.

[0051] Cover plate 103 is injection molded using TPV material. The exterior surface of the product can be shaped in various ways. The surface is treated with leather grain corrosion to meet different appearance requirements. It is fixed to the aluminum profile frame with standard parts such as clips and screws. The aluminum profile frame is extruded using aluminum alloy AL6063 material and heat treated in T5 state. The product has a simple structure and low density. After extrusion, it is cut into the required length and size, and is processed by CNC to meet support requirements. End cap 103 is made of PP+EPDM-TD20 material. The exterior surface of the product can be shaped in various ways. The surface is treated with leather grain corrosion to meet different appearance requirements. It is fixed to the aluminum profile frame with standard parts such as reed nuts and self-tapping screws to modify the hollowing out of the side of the profile.

[0052] The linkage mechanism includes two four-bar linkages: an active four-bar linkage and a passive four-bar linkage. The active four-bar linkage primarily consists of a main fixed support 301, a driving rod, a rotating swing arm, and a connecting rod. In the active four-bar linkage, the main fixed support 301 and the connecting rod are arranged vertically, while the driving rod and the rotating swing arm are arranged front-to-back. The passive four-bar linkage primarily consists of a slave fixed support 304, a driven member, a rotating swing arm, and a connecting rod. In the passive four-bar linkage, the slave fixed support 304 and the connecting rod are arranged vertically, while the driven rod and the rotating swing arm are arranged front-to-back.

[0053] Among them, the rotating swing arm and the connecting rod are common parts (that is, the rotating swing arm in the active four-bar linkage mechanism and the rotating swing arm in the driven four-bar linkage mechanism have the same structural dimensions, and the connecting rod in the active four-bar linkage mechanism and the connecting rod in the driven four-bar linkage mechanism have the same structural dimensions); due to different fixed installation matching requirements, the main fixed bracket 301 and the slave fixed bracket 304 have different aperture sizes of the connecting holes; the driving rod and the driven rod have the same outer contour, only because the driving rod needs to match the driving motor, and the driven rod matches the connecting rod pin, the driving rod and the driven rod have partial differences in structure, and can share a set of die-casting molds to distinguish them during CNC processing.

[0054] The main fixing bracket 301 and the secondary fixing bracket 304 are both connected to the secondary pedal frame 201. In this embodiment, the main fixing bracket 301 is locked to the secondary pedal frame 201, thereby achieving a fixed connection between the active four-bar linkage and the secondary pedal frame 201. The secondary fixing bracket 304 is locked to the secondary pedal frame 201, thereby achieving a fixed connection between the driven four-bar linkage and the secondary pedal frame 201.

[0055] In this embodiment, the active four-bar linkage is a four-bar linkage connected to the drive motor 303. The drive motor 303 drives the drive rods in the active four-bar linkage to rotate.

[0056] In the four-bar linkage, the front end of the connecting rod (i.e., the front end 302 of the connecting rod) is connected to the first-stage pedal frame 101, as shown in FIG. Figure 8 During operation, after the driving motor 303 is started, the connecting rod will drive the first-stage pedal frame 101 to extend and retract forward and backward.

[0057] The connecting rods in the active and passive four-bar linkages are both connected to the primary pedal frame 101. Simultaneously, the primary fixing bracket 301 in the active four-bar linkage and the secondary fixing bracket 304 in the passive four-bar linkage are both connected to the secondary pedal frame 201. To this end, the secondary pedal frame 201 is connected to the primary pedal frame 101 via a connecting rod mechanism. Furthermore, the secondary pedal frame 201 is secured to the vehicle chassis via three vehicle body mounting brackets 400, thus achieving the connection between the integrated double-layer intelligent step and the vehicle body.

[0058] Specifically, if Figure 8 As shown, a mounting groove extending from top to bottom is provided on the connecting rod (specifically, on the front end 302 of the connecting rod). Before the connecting rod is assembled with the first-stage pedal frame 101, a freely slidable T-block 401 is built into the T-slot at the rear end of the first-stage pedal frame 101. Slide the T-block 401 to the assembly position, insert the hexagon socket bolt 402 into the mounting groove and screw it downward into the threaded hole at the upper end of the T-block 401. After tightening, a fastened connection between the connecting rod and the first-stage pedal frame 101 is achieved, thereby achieving fixation between the four-bar linkage and the first-stage pedal frame 101. The connection structure between the connecting rod and the first-stage pedal frame 101 is a detachable connection structure, which is convenient for disassembly and assembly.

Claims

1. A double-layer intelligent step, characterized by: It comprises a first-level electric step (100) and a second-level fixed step (200) located above the first-level electric step (100); The first-level electric step (100) includes a connecting rod telescopic mechanism and a first-level pedal assembly; the connecting rod telescopic mechanism includes a connecting rod mechanism and a driving component for driving the connecting rod mechanism; the connecting rod mechanism is connected between the second-level fixed step (200) and the first-level pedal assembly; Driven by the connecting rod telescopic mechanism, the first-stage pedal assembly freely telescopes and moves between a position below the second-stage fixed step (200) and a position below the front of the second-stage fixed step (200).

2. The double-layer intelligent step according to claim 1, characterized in that: The linkage mechanism includes an active four-bar linkage and a driven four-bar linkage that are arranged side by side; the driving component is a driving motor; and the driving motor is connected to the active four-bar linkage.

3. A double-layer intelligent step according to claim 1 or 2, characterized in that: The first-stage pedal assembly comprises a first-stage pedal frame (101); a cover plate (102) is provided at the upper end of the first-stage pedal frame (101); and an end cover (103) is provided at each of the left and right ends of the first-stage pedal frame (101).

4. The double-layer intelligent step according to claim 3, characterized in that: The first-level pedal frame (101) is an aluminum profile frame, and the cover plate 1 (102) and the end cover 1 (103) are both made of plastic.

5. The double-layer intelligent step according to claim 4, characterized in that: The secondary fixed step (200) comprises a secondary pedal frame (201); a second cover plate (202) is provided at the upper end of the secondary fixed step (200); and a second end cover (203) is provided at each of the left and right ends of the secondary fixed step (200); The connecting rod mechanism is connected to the first-stage pedal frame (101) and the second-stage pedal frame (201).

6. The double-layer intelligent step according to claim 5, characterized in that: The secondary pedal frame (201) is a steel plate frame.

7. The double-layer intelligent step according to claim 6, characterized in that: A steel plate support frame (204) is also provided in the steel plate skeleton.

8. The double-layer intelligent step according to claim 7, characterized in that: The steel plate skeleton is a stamping part.

9. The double-layer intelligent step according to claim 8, characterized in that: The secondary pedal frame (201) is also connected to a vehicle body mounting bracket (400) for connecting to the vehicle body.

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