CN110641374A

CN110641374A - Pedal device and vehicle

Info

Publication number: CN110641374A
Application number: CN201911050568.3A
Authority: CN
Inventors: 吴彩庭; 张珂; 陈剑
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-01-03

Abstract

The invention provides a pedal device and a vehicle. The pedal device comprises a frame structure, wherein at least one side of the frame structure is provided with an opening; the first pedal assembly is rotatably connected with the frame structure and can be unfolded outwards through the opening or folded back inwards through the opening; and the second pedal assembly is connected with the frame structure in a sliding manner, and can extend outwards from the opening or retract inwards into the frame structure. According to the technical scheme, the combination of the sliding pedal and the rotating pedal is realized by optimizing the connecting structure, the effective extending length of the pedal device can be increased, the use comfort is improved, the space utilization rate is improved, meanwhile, the exposure of parts is reduced, the failure rate is reduced, and the reliability of the pedal device is enhanced.

Description

Pedal device and vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to a pedal device and a vehicle.

Background

At present, the common type of getting on the bus footboard in automotive filed has fixed, convertible, telescopic etc. but the getting on the bus footboard of above form has fixed and connection poor stability, uses inconveniently, and occupation space has increased the automobile body width, takes place to interfere scheduling problem with external object easily. The prior art provides a combined pedal device of a fixed pedal and a pneumatic turnover pedal, but the extension amount of the fixed pedal in the pedal device relative to a vehicle body is limited, the fixed pedal is easy to collide with a human body or an external object, the use comfort is poor, and meanwhile, a driving device and a connecting rod structure of the pedal device are exposed, so that faults are easy to occur, and the reliability of the pedal device is influenced.

Disclosure of Invention

The present invention is directed to improving at least one of the technical problems of the prior art or the related art.

To this end, it is an object of the present invention to provide a pedal apparatus.

It is another object of the present invention to provide a vehicle.

In order to achieve the above object, a first aspect of the present invention provides a pedal apparatus including: the frame structure is provided with an opening on at least one side; the first pedal assembly is rotatably connected with the frame structure and can be unfolded outwards through an opening on one side of the frame structure or folded back inwards through overturning; and the second pedal assembly is connected with the frame structure in a sliding manner, and can extend outwards from the opening or retract inwards into the frame structure.

According to a first aspect of the invention, a pedal apparatus includes a frame structure, a first pedal assembly and a second pedal assembly. The first pedal assembly is rotatably coupled to the frame structure and the second pedal assembly is slidably coupled to the frame structure to provide support to the first pedal assembly and the second pedal assembly via the frame structure. At least one side of the frame structure is provided with an opening, the first pedal assembly can be unfolded by the opening in a turnover mode towards the outside of the frame structure or folded by the opening in a turnover mode towards the inside of the frame structure, and the second pedal assembly can be extended by the opening in an outward sliding mode or folded by the opening in a sliding mode towards the inside of the frame structure, so that when the pedal device is used, personnel can step on the pedal device through the first pedal assembly and the second pedal assembly, getting on and off of a vehicle are assisted, and particularly when the pedal device is applied to a fire fighting vehicle, an engineering vehicle or machinery, the comfortableness of getting on and off. Meanwhile, the first pedal assembly and the second pedal assembly are in rotating and sliding forms respectively, conversion can be completed only within the height range of the frame structure, the first pedal assembly and the second pedal assembly can be retracted into the frame structure after use, occupied space is small, and particularly when the pedal device is assembled on a vehicle, in a use state, the extending amount of the pedal device relative to a vehicle body is increased, treading is convenient, and in a non-use state, the pedal device cannot exceed the size limit of the vehicle and cannot interfere with an external object. In addition, the framework structure can protect the driving devices and the connecting parts of the first pedal assembly and the second pedal assembly, and also has the waterproof and dustproof functions, so that the possibility of the pedal assembly breaking down is reduced, and the reliability of the pedal device is higher.

It is emphasized that the first pedal assembly and the second pedal assembly may be spatially arranged such that the second pedal assembly is located above the first pedal assembly, or the first pedal assembly is located above the second pedal assembly.

It can be understood that the pedal device of the invention can be applied to automobiles such as fire engines, engineering vehicles, trucks, buses and the like, and can also be applied to engineering machinery or railway vehicles.

In addition, the pedal device in the above technical solution provided by the present invention may further have the following additional technical features:

in the above technical solution, the first pedal assembly includes a first pedal and a first driving device, the first pedal is rotatably connected to the frame structure, one end of the first driving device is rotatably connected to the frame structure, and an output end of the first driving device is rotatably connected to the first pedal to drive the first pedal to turn outwards from the opening or retract inwards from the frame structure; and the second pedal assembly comprises a second pedal and a second driving device, the second pedal is in sliding connection with the frame structure, one end of the second driving device is connected with the frame structure, and the output end of the second driving device is connected with the second pedal so as to drive the second pedal to extend outwards from the opening or retract inwards into the frame structure.

In this technical scheme, first footboard subassembly includes first footboard and first drive arrangement, through setting up first footboard and frame construction rotatable coupling, first drive arrangement's one end and frame construction rotatable coupling, first drive arrangement's output and first footboard rotatable coupling rotate for frame construction through first drive arrangement drive first footboard, realize that first footboard is expanded or is withdrawed to frame construction internal overturn by frame construction's opening is outwards overturned. The second pedal assembly comprises a second pedal and a second driving device, the second pedal is connected with the frame structure in a sliding mode through the second driving device, one end of the second driving device is connected with the frame structure, and the output end of the second driving device is connected with the second pedal so as to drive the second pedal to slide through the second driving device, and the second pedal extends out of an opening of the frame structure or retracts into the frame structure. According to the pedal device, the first driving device and the second driving device are used for providing power for the first pedal and the second pedal respectively, manual operation is not needed, the time for getting on or off the bus can be saved, and control is convenient.

In the above technical solution, the first pedal assembly further includes: the at least one third pedal is arranged below the second pedal and is rotatably connected with the two side wall plates positioned at the two sides of the opening; the connecting rod, the both ends of connecting rod respectively with first footboard and third footboard rotatable coupling to drive the synchronous rotation of third footboard when the rotation through first footboard, wherein, second footboard below is located to first footboard and third footboard, and the vertical distance between the axis of rotation of first footboard and the second footboard is greater than the radius of rotation of first footboard, and the vertical distance of the axis of rotation of third footboard to the second footboard is greater than the radius of rotation of third footboard.

In this technical scheme, first footboard subassembly still includes at least one third footboard and at least one connecting rod. The third footboard is located the second footboard below, through setting up the third footboard and two lateral wall board rotatable coupling that are located frame construction's opening both sides, the both ends of connecting rod respectively with first footboard and third footboard rotatable coupling, in order when first footboard rotates, drive the third footboard and rotate with first footboard synchronization through the connecting rod, make first footboard subassembly form two-stage linkage footboard structure, utilize auto-lock qigong to drive first footboard and third footboard simultaneously and rotate, footboard level and quantity have been increased on the one hand, the use travelling comfort of footboard device has further been improved, on the other hand has improved the utilization efficiency of auto-lock cylinder. The second pedal is arranged above the first pedal and the third pedal, the vertical distance between the rotating axis of the first pedal and the second pedal is larger than the rotating radius of the first pedal, and the vertical distance between the rotating axis of the third pedal and the second pedal is larger than the rotating radius of the third pedal, so that the first pedal and the third pedal are prevented from interfering with the second pedal in the rotating process, meanwhile, the maximum height of the first pedal and the second pedal in the rotating process is not more than the height range of the frame structure, the second pedal only slides outwards or slides inwards through the opening of the frame structure to retract, the moving range does not exceed the height range of the frame structure, the occupied space outside the frame structure can be reduced, and the connecting structure is facilitated to be simplified.

It should be emphasized that the relative position of the first pedal and the third pedal may have different forms, and when the first pedal assembly is in the deployed position, the third pedal may be located above the first pedal or below the first pedal, so as to achieve the technical effects of the present disclosure. When the number of the third steps is plural, the plural third steps may be further provided above and below the first step, respectively.

In the above technical solution, when the first pedal assembly is in the retracted position, the third pedal and the first pedal are in different vertical planes; when the first pedal assembly is in the unfolding position and the second pedal assembly is in the fully extending position, the sizes of the second pedal, the third pedal and the part of the first pedal positioned outside the opening are sequentially increased from top to bottom along the direction of the opening; or when the first pedal is positioned above the third pedal, the first pedal assembly is positioned at the unfolding position and the second pedal assembly is positioned at the complete extending position, the sizes of the second pedal, the first pedal and the third pedal positioned at the outer side of the opening are sequentially increased from top to bottom along the direction of the opening.

In this technical scheme, inject when first footboard subassembly is in the position of withdrawing, the third footboard is in different vertical planes with first footboard, can avoid producing between third footboard and the first footboard and interfere, is favorable to the spatial arrangement between first footboard subassembly and the second footboard subassembly, can improve space utilization. When the first pedal is positioned below the third pedal, the first pedal assembly is positioned at the unfolding position and the second pedal assembly is positioned at the fully extending position, and the sizes of the second pedal, the third pedal and the part of the first pedal positioned outside the opening are sequentially increased from top to bottom along the direction of the opening; or, when first footboard is located the top of third footboard, first footboard subassembly is in the development position and when second footboard subassembly is in the position of stretching out completely, the part that second footboard, first footboard and third footboard are located the opening outside, from top to bottom increases in proper order along the ascending size in open-ended direction for the footboard device is the echelonment structure, accords with human engineering principle more, and personnel are more laborsaving when getting on or off the bus through the footboard device, reduces the possibility that produces the collision between foot and the footboard when strideing across the level in the while, is favorable to reinforcing and uses the travelling comfort.

In the above technical scheme, the frame structure at least comprises two side wall plates located at two sides of the opening and a rear side wall opposite to the opening, the first pedal and the third pedal are respectively rotatably connected with the two side wall plates, and the second pedal is connected with the two side wall plates in a sliding manner.

In this technical scheme, frame construction is including being located two lateral wall boards of opening both sides and the rear wall board relative with the opening at least, through setting up first footboard and third footboard and being located two lateral wall board rotatable coupling of opening both sides, second footboard and the two lateral wall boards sliding connection who are located the opening both sides to make the motion trail of first footboard, second footboard and third footboard towards frame construction's opening. In addition, through being located two lateral wall boards of opening both sides and the back lateral wall board relative with the opening link to each other, can improve frame construction's bearing capacity, reduce to rock, be favorable to strengthening footboard device's stability.

In the technical scheme, the first driving device is a self-locking cylinder, a cylinder barrel of the self-locking cylinder is rotatably connected with the rear side wall plate, a piston rod of the self-locking cylinder is rotatably connected with the first pedal, a preset angle is formed between the self-locking cylinder and the first pedal, and the self-locking cylinder can be locked when the piston rod moves to the limit position; and/or the second driving device is a telescopic cylinder, the telescopic cylinder is arranged at one end of the second pedal, which deviates from the opening, and is arranged along the sliding direction of the second pedal, the cylinder barrel of the telescopic cylinder is connected with the rear side wall plate, and the piston rod of the telescopic cylinder is connected with the second pedal.

In the technical scheme, the first driving device is a self-locking cylinder, a cylinder barrel of the self-locking cylinder is rotatably connected with a rear side wall plate of the frame structure, a piston rod of the self-locking cylinder is rotatably connected with the first pedal, so that the self-locking cylinder is supported through the rear side wall plate, and the first pedal is driven to rotate through the telescopic motion of the piston rod of the self-locking pneumatic power. Specifically, it is predetermined the angle to be between limited auto-lock cylinder and the first footboard, and the axis of auto-lock cylinder and the rotation axis non-intersect of first footboard, and the axis of auto-lock cylinder directly is formed with the arm of force with the rotation axis of first footboard promptly to make the piston rod concertina movement of auto-lock cylinder form the torque to first footboard, drive first footboard and rotate. Wherein, the auto-lock cylinder can be at the piston rod locking when moving to extreme position to prevent that first footboard from producing to rock the influence and trample, also can place first footboard and open when withdrawing the position by accident, bump with external object or personnel, thereby improved pedal device's stability and security. It will be appreciated that the extreme positions of movement of the piston rod include an extended extreme position and a retracted extreme position. Be telescopic cylinder through setting up the second drive arrangement, telescopic cylinder locates the second footboard and deviates from open-ended one end, and the second cylinder sets up along the slip direction of second footboard, so that telescopic cylinder's piston rod's flexible direction is unanimous with second footboard slip direction, telescopic cylinder's cylinder is connected with frame construction's rear side wall, telescopic cylinder's piston rod is connected with the second footboard, so that telescopic cylinder's piston rod's flexible direction keeps unanimous with the slip direction of first footboard, can improve transmission efficiency, under the prerequisite that satisfies the required drive power of first footboard slip, telescopic cylinder can adopt the model that is littleer relatively, be favorable to reduce cost, still do benefit to the optimization connected mode, reduce the space and occupy.

In the above technical solution, the second pedal assembly further includes: the two ends of the limiting pin shaft are respectively connected with the two side wall plates located on the two sides of the opening, the limiting hole is formed in the two side walls of the second pedal along the length direction of the limiting pin shaft, the size of the limiting hole along the sliding direction of the second pedal is not smaller than a preset size, the two ends of the limiting pin shaft are respectively penetrated out through the two limiting holes correspondingly arranged, and the limitation of the second pedal is achieved through the matching of the limiting pin shaft and the limiting hole.

In this technical scheme, the second footboard subassembly still includes to spacing round pin axle and spacing hole to slide to the second footboard carries on spacingly. Specifically, two ends of a limiting pin shaft are respectively connected with two side wall plates positioned at two sides of an opening of the frame structure, two side walls of the second pedal along the length direction of the limiting wire shaft are provided with limiting holes, and the limiting pin shaft penetrates through the two correspondingly arranged limiting holes, so that the second pedal is sleeved on the limiting pin shaft; the size of the limiting hole in the sliding direction of the second pedal is not smaller than a preset size, the sliding limit position of the second pedal is limited through the matching of the limiting pin shaft and the limiting hole, and the size of the limiting hole in the sliding direction of the second pedal limits the sliding stroke of the second pedal. It should be noted that the number of the limiting pin shafts may be one or more; the number of the limiting holes is matched with the number of the limiting pin shafts.

In the above technical solution, the pedal device further includes: the first limiting part is arranged on at least one side wall plate connected with the first pedal, and the first limiting part and the first pedal are correspondingly arranged so as to limit the first pedal through the first limiting part when the first pedal is turned outwards; and/or at least one second limiting part arranged on at least one side wall plate connected with the third pedal, wherein the second limiting part is arranged corresponding to the third pedal so as to limit the third pedal through the second limiting part when the third pedal is turned outwards; and/or at least one third limiting part arranged on at least one side wall plate connected with the third pedal so as to limit the third pedal through the third limiting part when the third pedal is retracted towards the inner side of the frame structure.

In this technical scheme, through be equipped with first spacing portion on at least one side wall board that is connected with first footboard to when first footboard outwards overturns, support with first footboard through first spacing portion, restrict the rotation extreme position of first footboard, make first footboard can remain stable, so that trample the use. Similarly, a first limiting part is arranged on at least one side wall plate connected with the third pedal, so that when the third pedal turns outwards, the second limiting part is abutted against the third pedal, the rotation limit position of the third pedal is limited, and the second pedal is kept stable so as to be conveniently trampled. Through being equipped with the spacing portion of third on at least one side wall board that is connected with the third footboard to when the third footboard overturns to frame construction in, support with the third footboard through the spacing portion of third, the extreme position of restriction third footboard to frame construction internal rotation, and the extreme position of first footboard to frame construction internal upset through the connecting rod restriction, so that first footboard subassembly remains stable, prevents that third footboard and first footboard from overturning excessively in to frame construction, producing collision each other.

It should be noted that, when the first limiting portion, the second limiting portion and the third limiting portion are made of flexible materials, the effect of buffering stress can also be achieved.

In the above technical solution, the pedal device further includes: the position detection device is arranged on the frame structure and used for detecting the position state of the first pedal assembly; the controller is electrically connected with the first pedal assembly, the second pedal assembly and the position detection device, and controls the rotation of the first pedal assembly and/or controls the extension and retraction of the second pedal assembly according to a position state signal of the first pedal assembly; and the alarm device is electrically connected with the controller, and the controller controls the alarm device to give an alarm prompt when the position state of the first pedal assembly and/or the second pedal assembly is not matched with the target position corresponding to the control instruction of the controller.

In the technical scheme, the position detection device is arranged on the frame structure to detect the position state of the first pedal assembly and/or the second pedal assembly. The controller is electrically connected with the position detection device, the first pedal assembly and the second pedal assembly, so that the actual position of the current first pedal assembly is determined according to the position state signal of the first pedal assembly detected by the position detection device, the rotation amount of the first pedal assembly is controlled, the first pedal assembly is rotated to a target position, and/or the extension amount of the second pedal assembly is controlled, and the second pedal assembly slides to the target position. Through setting up alarm device to when the footboard device takes place unusually or trouble, send out the alarm and indicate, remind the user of service to inspect and maintain. Specifically, after the controller sends out a control instruction, whether the pedal device is abnormal or not is determined according to whether the actual position of the first pedal assembly and/or the second pedal assembly fed back by the position detection device is matched with the target position corresponding to the control instruction or not, and the alarm device is controlled to send out an alarm prompt when the pedal device is abnormal. It should be noted that the position detection device may be a limit switch, an angle sensor, a displacement sensor or other detection devices meeting the condition. The alert prompt includes, but is not limited to, an alert light flashing, a buzzer alert, a voice alert.

In the technical scheme of the second aspect of the invention, the vehicle comprises a vehicle body; at least one pedal device according to any one of the above first aspect, the pedal device being attached to a vehicle body.

According to a second aspect of the present invention, a vehicle includes a vehicle body and at least one pedal device according to any one of the first aspect described above. The pedal device is connected to the vehicle body so as to assist a person to get on or off the vehicle. The step apparatus may be mounted to the cab, cargo box, passenger compartment or other location on the vehicle body where access to and from the vehicle may be provided. The vehicle according to the present invention includes all the advantageous effects of the pedal device according to any one of the above-described first aspect, and therefore, the description thereof is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic configuration of a pedal apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a pedal apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural view illustrating a pedal apparatus according to an embodiment of the present invention;

fig. 4 is a schematic view showing an internal structure of a pedal apparatus according to an embodiment of the present invention;

fig. 5 is a schematic view showing an internal structure of a pedal apparatus according to an embodiment of the present invention;

fig. 6 is a schematic view showing an internal structure of a pedal apparatus according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the components in fig. 1 to 6 is as follows:

1 frame construction, 12 left side wallboard, 13 right side wallboard, 14 rear wall board, 15 connecting plates, 2 first footboard subassembly, 21 first footboard, 22 auto-lock cylinder, 23 third footboard, 24 connecting rods, 251 first connecting seat, 252 second connecting seat, 261 first stopper, 262 second stopper, 263 third stopper, 271 first footboard pivot, 272 third footboard pivot, 3 second footboard subassemblies, 31 second footboard, 311 spacing hole, 32 telescopic cylinder, 321 telescopic cylinder connecting piece, 33 spacing round pin axle, 4 limit switch.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Pedal apparatuses and vehicles according to some embodiments of the present invention are described below with reference to fig. 1 to 6.

Example one

The present embodiment provides a pedal device, as shown in fig. 1, comprising a frame structure 1, a first pedal assembly 2 and a second pedal assembly 3. The frame structure 1 is a cuboid structure with an opening on one side, and comprises a left side wall plate 12 and a right side wall plate 13 on two sides of the opening, a rear side wall plate 14 opposite to the opening, and a connecting plate 15 arranged on the top. The first step assembly 2 and the second step assembly 3 are disposed between the left side wall plate 12 and the right side wall plate 13. Specifically, the first pedal assembly 2 includes a first pedal 21 and a self-locking cylinder 22 connected to the first pedal 21, the first pedal 21 is rotatably connected to the left side wall plate 12 and the right side wall plate 13, a cylinder of the self-locking cylinder 22 is rotatably connected to the rear side wall plate 14, a piston rod of the self-locking cylinder 22 is rotatably connected to one end of the first pedal 21 near the rotating shaft, and the first pedal 21 is driven by the extension and contraction of the piston rod of the self-locking cylinder 22 to be outwardly flipped and unfolded from the opening of the frame structure 1 or inwardly flipped and retracted from the frame structure 1. When the piston of the self-locking cylinder 22 is at the rod extending limit position, the first pedal 21 is at the unfolding position (as shown in fig. 1), and at this time, the first pedal 21 is horizontally arranged; when the piston rod is at the retracted extreme position, the first pedal 21 is at the retracted position (the state shown in fig. 2), and the first pedal 21 is vertically arranged, the self-locking cylinder 22 can be locked at the extreme position. A preset angle a is formed between the self-locking cylinder 22 and the first pedal 21, and the axis of the self-locking cylinder 22 does not intersect with the axis of the first pedal 21, the angle range of the preset angle a is 20 degrees to 140 degrees, and further, the angle range of the preset angle a is 30 degrees to 120 degrees. The second pedal assembly 3 comprises a second pedal 31 and a telescopic cylinder 32 connected with the second pedal 31, the second pedal 31 is positioned above the first pedal 21, the second pedal 31 is respectively connected with the left side wall plate 12 and the right side wall plate 13 in a sliding way, and the second pedal 31 is horizontally arranged; the telescopic cylinder 32 is arranged at one end of the opening of the second pedal 31, which deviates from the frame structure 1, the cylinder barrel of the telescopic cylinder 32 is connected with the rear side wall plate 14, the piston rod of the telescopic cylinder 32 is connected with the second pedal 31, and the axis of the telescopic cylinder 32 is horizontally arranged, so that the second pedal 31 is driven to slide along the horizontal direction through the extension and retraction of the piston rod of the telescopic cylinder 32, and the opening of the frame structure 1 outwards extends out or retracts into the frame structure 1. As shown in fig. 2, the vertical distance from the rotation axis of the first pedal 21 to the second pedal 31 is greater than the rotation radius of the first pedal 21, so as to be under the second pedal 31 when the first pedal 21 assembly 2 is in the retracted position, i.e. when the first pedal 21 is turned to the vertical state.

Example two

The present embodiment provides a pedal device, as shown in fig. 3, comprising a frame structure 1, a first pedal assembly 2 and a second pedal assembly 3. The frame structure 1 is a cuboid structure with an opening on one side, and comprises a left side wall plate 12 and a right side wall plate 13 on two sides of the opening, a rear side wall plate 14 opposite to the opening, and a connecting plate 15 arranged on the top. The first step assembly 2 and the second step assembly 3 are disposed between the left side wall plate 12 and the right side wall plate 13.

Specifically, as shown in fig. 4, the first pedal assembly 2 includes a first pedal 21, a third pedal 23, a connecting rod 24 and a self-locking cylinder 22, the first pedal 21 and the third pedal 23 are rotatably connected to the left side wall plate 12 and the right side wall plate 13, respectively, and the rotation axis of the third pedal 23 is located above the rotation axis of the first pedal 21; the cylinder barrel of the self-locking cylinder 22 is rotatably connected with the rear side wall plate 14 through a first connecting seat 251, and the piston rod of the self-locking cylinder 22 is rotatably connected with one end, close to the rotating shaft, of the first pedal 21 through a second connecting seat 252; the two ends of the connecting rod 24 are rotatably connected with the second connecting seat 252 and the third pedal 23 on the first pedal 21 respectively, the first pedal 21 is driven to rotate by the extension and contraction of the piston rod of the self-locking cylinder 22, and the third pedal 23 is driven to synchronously rotate along with the first pedal 21 through the connecting rod 24, so that the first pedal 21 and the third pedal 23 are synchronously unfolded by the opening of the frame structure 1 in an outward overturning manner or are folded by the frame structure 1 in an inward overturning manner. When the piston of the self-locking cylinder 22 is at the rod extending limit position, the first pedal 21 and the third pedal 23 are at the unfolding positions (as shown in fig. 4), and at this time, the first pedal 21 and the third pedal 23 are horizontally arranged; when the piston rod is at the retraction limit position, the first pedal 21 is at the retraction position (as shown in fig. 5), at this time, the first pedal 21 and the third pedal 23 are vertically disposed, the first pedal 21 and the third pedal 23 are respectively located on different vertical planes, the third pedal 23 is located on a side of the first pedal 21 departing from the opening of the frame structure 1, and the first pedal 21 blocks the opening of the frame structure 1 in the horizontal direction. A preset angle a is formed between the self-locking cylinder 22 and the first pedal 21, the angle range of the preset angle a is 20 degrees to 140 degrees, further, the angle range of the preset angle a is 30 degrees to 120 degrees, the axis of the self-locking cylinder 22 does not intersect with the axis of the first pedal 21, and the self-locking cylinder 22 can form a locking at an extreme position. As shown in fig. 2, the vertical distance from the rotation axis of the first pedal 21 to the second pedal 31 is greater than the rotation radius of the first pedal 21, and the vertical distance from the rotation axis of the third pedal 23 to the second pedal 31 is greater than the rotation radius of the third pedal 23, so as to be located below the second pedal 31 when the first pedal assembly 2 is in the retracted position, i.e., when the first pedal 21 and the third pedal 23 are turned to the vertical state. When the first pedal 21 is positioned below the third pedal 23, when the first pedal assembly 2 is in the unfolded position and the second pedal assembly 3 is in the fully extended position, the sizes of the second pedal 31, the third pedal 23 and the part of the first pedal 21, which is positioned outside the opening of the frame structure 1, are sequentially increased along the horizontal direction, so that a three-stage ladder structure is formed; if the first step 21 is located above the third step 23, when the first step assembly 2 is in the extended position and the second step assembly 3 is in the fully extended position, the horizontal dimensions of the portions of the second step 31, the first step 21 and the third step 23 located outside the opening of the frame structure 1 increase sequentially, forming a three-step structure.

As shown in fig. 3 and 4, the second pedal assembly 3 includes a second pedal 31 and a telescopic cylinder 32 connected to the second pedal 31, the second pedal 31 is located above the first pedal 21, the second pedal 31 is slidably connected to the left side wall plate 12 and the right side wall plate 13, respectively, and the second pedal 31 is horizontally disposed; the telescopic cylinder 32 is arranged at one end of the opening of the second pedal 31 departing from the frame structure 1, the cylinder barrel of the telescopic cylinder 32 is connected with the rear side wall plate 14, the piston rod of the telescopic cylinder 32 is connected with the second pedal 31 through a telescopic cylinder connecting piece 321, and the axis of the telescopic cylinder 32 is horizontally arranged so as to stretch out and draw back the piston rod of the telescopic cylinder 32, drive the second pedal 31 to slide along the horizontal direction, and outwards extend out or withdraw in the frame structure 1 through the opening of the frame structure 1.

It should be emphasized that the relative position and connection form of the first pedal 21 and the third pedal 23 in the present invention are not limited to the form in the present embodiment, and the third pedal 23 may be located below the first pedal 21, the third pedal 23 may be rotatably connected to the first pedal 21 through a connecting rod 24, and the third pedal 23 may rotate synchronously with the first pedal under the driving of the self-locking cylinder 22.

EXAMPLE III

The embodiment provides a pedal device, which is further improved on the basis of the second embodiment. As shown in fig. 6, the second pedal assembly 3 further includes two limit pins 33, which are disposed between the left wall plate 12 and the right wall plate 13 of the frame structure 1, and two ends of each limit pin 33 are respectively fixedly connected to the left wall plate 12 and the right wall plate 13, the two limit pins 33 are spaced apart along the horizontal direction, the second pedal 31 is provided with limit holes 311 corresponding to the limit pins 33, and the second pedal 31 is sleeved on the limit pins 33 through the limit holes 311. Wherein, the cross-section of spacing hole 311 is bar-shaped structure, and the long limit of bar-shaped structure extends along the horizontal direction to when telescopic cylinder 32 drive second footboard 31 slides, offset with spacing round pin axle 33 through the minor face of bar-shaped structure, carry on spacingly to second footboard 31. The length of the limiting hole 311 is not smaller than a predetermined size to satisfy the sliding stroke of the second pedal 31.

Further, the first pedal assembly 2 further includes a first stopper 261, a second stopper 262 and a third stopper 263. As shown in fig. 6, the number of the first stopper 261, the second stopper 262 and the third stopper 263 is two, and the first stopper, the second stopper 262 and the third stopper 263 are respectively disposed on the inner sides of the left side wall plate 12 and the right side wall plate 13 of the frame structure 1. Specifically, the first limit block 261 and the end of the first pedal 21 close to the first pedal rotating shaft 271 are correspondingly disposed, so that when the first pedal 21 is turned to the unfolding position, the first limit block 261 pushes against the first pedal 21 to limit the turning of the first pedal 21. The second limiting block 262 is disposed corresponding to an end of the third pedal 23 close to the third pedal rotating shaft 272, so that when the third pedal 23 is turned over to the unfolding position, the third pedal 23 is limited by the second limiting block 262 abutting against the third pedal 23. The third limiting block 263 is located above the second limiting block 262 and disposed corresponding to an end of the third pedal 23 that can be turned outwards, so that when the third pedal 23 is located at the retraction position, the third limiting block 263 abuts against the third pedal 23 to limit the third pedal 23. The first stopper 261, the second stopper 262 and the third stopper 263 are made of flexible materials to buffer stress.

Example four

The pedal device provided in the embodiment is further improved on the basis of the second embodiment. As shown in fig. 4, the pedal device further includes a limit switch 4, a controller (not shown), and an alarm device (not shown), and the controller is electrically connected to the self-locking cylinder 22, the telescopic cylinder 32, the limit switch 4, and the alarm device, respectively. Limit switch 4 locates the inboard of right side wallboard 13, and be located between third footboard 23 and the second footboard 31, limit switch 4 corresponds the setting with third footboard 23, in order when third footboard 23 overturns to withdrawing the position, limit switch 4's probe can contact with third footboard 23, limit switch 4 receives the position from third footboard 23's pressure value through detecting the probe and confirms third footboard 23 and first footboard 21, and with this position signal transmission to controller, the controller confirms whether third footboard 23 and first footboard 21 are in withdrawing the position according to this position signal, and then control auto-lock cylinder 22 and telescopic cylinder 32. When the position state of the third pedal 23 is not matched with the target position corresponding to the control instruction of the controller, it is determined that the pedal device is abnormal, and the controller controls the alarm device to give an alarm prompt to prompt an operator to check and maintain in time. Wherein, the alarm reminding comprises but not limited to alarm lamp flashing, buzzer reminding and voice reminding.

EXAMPLE five

In the present embodiment, a pedal device is provided, as shown in fig. 3, including a frame structure 1, a first pedal assembly 2, a second pedal assembly 3, a limit switch 4, a controller (not shown), and an alarm device (not shown). The frame structure 1 is a cuboid structure with an opening on one side, and comprises a left side wall plate 12 and a right side wall plate 13 on two sides of the opening, a rear side wall plate 14 opposite to the opening, and a connecting plate 15 arranged on the top. The first step assembly 2 and the second step assembly 3 are disposed between the left side wall plate 12 and the right side wall plate 13.

Specifically, as shown in fig. 4, the first pedal assembly 2 includes a first pedal 21, a third pedal 23, a connecting rod 24 and a self-locking cylinder 22, the first pedal 21 and the third pedal 23 are rotatably connected to the left side wall plate 12 and the right side wall plate 13, respectively, and the rotation axis of the third pedal 23 is located above the rotation axis of the first pedal 21; the cylinder barrel of the self-locking cylinder 22 is rotatably connected with the rear side wall plate 14 through a first connecting seat 251, and the piston rod of the self-locking cylinder 22 is rotatably connected with one end, close to the rotating shaft, of the first pedal 21 through a second connecting seat 252; the two ends of the connecting rod 24 are rotatably connected with the second connecting seat 252 and the third pedal 23 on the first pedal 21 respectively, the first pedal 21 is driven to rotate by the extension and contraction of the piston rod of the self-locking cylinder 22, and the third pedal 23 is driven to synchronously rotate along with the first pedal 21 through the connecting rod 24, so that the first pedal 21 and the third pedal 23 are synchronously unfolded by the opening of the frame structure 1 in an outward overturning manner or are folded by the frame structure 1 in an inward overturning manner. When the piston of the self-locking cylinder 22 is at the rod extending limit position, the first pedal 21 and the third pedal 23 are at the unfolding positions (as shown in fig. 4), and at this time, the first pedal 21 and the third pedal 23 are horizontally arranged; when the piston rod is at the retraction limit position, the first pedal 21 is at the retraction position (as shown in fig. 5), at this time, the first pedal 21 and the third pedal 23 are vertically disposed, the first pedal 21 and the third pedal 23 are respectively located on different vertical planes, the third pedal 23 is located on a side of the first pedal 21 departing from the opening of the frame structure 1, and the first pedal 21 blocks the opening of the frame structure 1 in the horizontal direction. A preset angle a is formed between the self-locking cylinder 22 and the first pedal 21, the angle range of the preset angle a is 20 degrees to 140 degrees, further, the angle range of the preset angle a is 30 degrees to 120 degrees, the axis of the self-locking cylinder 22 does not intersect with the axis of the first pedal 21, and the self-locking cylinder 22 can form a locking at an extreme position. As shown in fig. 2, the vertical distance from the rotation axis of the first pedal 21 to the second pedal 31 is greater than the rotation radius of the first pedal 21, and the vertical distance from the rotation axis of the third pedal 23 to the second pedal 31 is greater than the rotation radius of the third pedal 23, so as to be located below the second pedal 31 when the first pedal assembly 2 is in the retracted position, i.e., when the first pedal 21 and the third pedal 23 are turned to the vertical state. When the first pedal assembly 2 is in the unfolding position and the second pedal assembly 3 is in the fully extending position, the sizes of the second pedal 31, the third pedal 23 and the part of the first pedal 21, which is positioned outside the opening of the frame structure 1, increase in sequence along the horizontal direction, so as to form a three-stage ladder structure.

The first pedal assembly 2 further includes a first stopper 261, a second stopper 262 and a third stopper 263. As shown in fig. 6, the number of the first stopper 261, the second stopper 262 and the third stopper 263 is two, and the first stopper, the second stopper 262 and the third stopper 263 are respectively disposed on the inner sides of the left side wall plate 12 and the right side wall plate 13 of the frame structure 1. Specifically, the first limit block 261 and the end of the first pedal 21 close to the first pedal rotating shaft 271 are correspondingly disposed, so that when the first pedal 21 is turned to the unfolding position, the first limit block 261 pushes against the first pedal 21 to limit the turning of the first pedal 21. The second limiting block 262 is disposed corresponding to an end of the third pedal 23 close to the third pedal rotating shaft 272, so that when the third pedal 23 is turned over to the unfolding position, the third pedal 23 is limited by the second limiting block 262 abutting against the third pedal 23. The third limiting block 263 is located above the second limiting block 262 and disposed corresponding to an end of the third pedal 23 that can be turned outwards, so that when the third pedal 23 is located at the retraction position, the third limiting block 263 abuts against the third pedal 23 to limit the third pedal 23. The first stopper 261, the second stopper 262 and the third stopper 263 are made of flexible materials to buffer stress.

As shown in fig. 3 and 4, the second pedal assembly 3 includes a second pedal 31 and a telescopic cylinder 32 connected to the second pedal 31, the second pedal 31 is located above the first pedal 21, the second pedal 31 is slidably connected to the left side wall plate 12 and the right side wall plate 13, respectively, and the second pedal 31 is horizontally disposed; the telescopic cylinder 32 is arranged at one end of the opening of the second pedal 31 departing from the frame structure 1, the cylinder barrel of the telescopic cylinder 32 is connected with the rear side wall plate 14, the piston rod of the telescopic cylinder 32 is connected with the second pedal 31 through a telescopic cylinder connecting piece 321, and the axis of the telescopic cylinder 32 is horizontally arranged so as to stretch out and draw back the piston rod of the telescopic cylinder 32, drive the second pedal 31 to slide along the horizontal direction, and outwards extend out or withdraw in the frame structure 1 through the opening of the frame structure 1. As shown in fig. 6, the second pedal assembly 3 further includes two limit pins 33, which are disposed between the left wall plate 12 and the right wall plate 13 of the frame structure 1, and two ends of each limit pin 33 are respectively fixedly connected to the left wall plate 12 and the right wall plate 13, the two limit pins 33 are spaced apart along the horizontal direction, the second pedal 31 is provided with limit holes 311 corresponding to the limit pins 33, and the second pedal 31 is sleeved on the limit pins 33 through the limit holes 311. Wherein, the cross-section of spacing hole 311 is bar-shaped structure, and the long limit of bar-shaped structure extends along the horizontal direction to when telescopic cylinder 32 drive second footboard 31 slides, offset with spacing round pin axle 33 through the minor face of bar-shaped structure, carry on spacingly to second footboard 31. The length of the limiting hole 311 is not smaller than a predetermined size to satisfy the sliding stroke of the second pedal 31.

The controller is respectively and electrically connected with the self-locking cylinder 22, the telescopic cylinder 32, the limit switch 4 and the alarm device. As shown in fig. 4, the limit switch 4 is disposed on the inner side of the right side wall plate 13 and located between the third pedal 23 and the second pedal 31, the limit switch 4 and the third pedal 23 are correspondingly disposed, so that when the third pedal 23 is turned to the retracted position, the probe of the limit switch 4 can contact with the third pedal 23, the limit switch 4 determines the positions of the third pedal 23 and the first pedal 21 by detecting the pressure value of the probe received from the third pedal 23, and transmits the position signal to the controller, and the controller determines whether the third pedal 23 and the first pedal 21 are in the retracted position according to the position signal, so as to control the self-locking cylinder 22 and the telescopic cylinder 32. When the position state of the third pedal 23 is not matched with the target position corresponding to the control instruction of the controller, it is determined that the pedal device is abnormal, and the controller controls the alarm device to give an alarm prompt to prompt an operator to check and maintain in time. Wherein, the alarm reminding comprises but not limited to alarm lamp flashing, buzzer reminding and voice reminding.

EXAMPLE six

The present embodiment provides a vehicle including a vehicle body and at least one pedal device according to any one of the first to fifth embodiments. The pedal device is connected to the vehicle body so as to assist a person to get on or off the vehicle. The step apparatus may be mounted to the cab, cargo box, passenger compartment or other location on the vehicle body where access to and from the vehicle may be provided. The vehicles in the present embodiment include, but are not limited to, trucks, buses, fire trucks, construction vehicles, and rail vehicles. In addition, the vehicle in this embodiment includes all the advantages of the pedal device in any one of the first to fifth embodiments, which are not described herein again.

The technical scheme of the invention is explained in detail by combining the attached drawings, the combination of the sliding pedal and the rotating pedal is realized by optimizing the connecting structure, the effective extension length of the pedal device can be increased, the use comfort is improved, the space utilization rate is improved, meanwhile, the exposure of parts is reduced, the failure rate is reduced, and the reliability of the pedal device is enhanced.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pedal apparatus, comprising:

the frame structure is provided with an opening on at least one side;

a first pedal assembly rotatably connected to the frame structure, the first pedal assembly being extendable by being flipped outwardly from the opening or retractable inwardly from the frame structure;

a second pedal assembly slidably coupled to the frame structure, the second pedal assembly being extendable outwardly from the opening or retractable inwardly from the frame structure.

2. The pedal apparatus according to claim 1,

the first pedal assembly comprises a first pedal and a first driving device, the first pedal is rotatably connected with the frame structure, one end of the first driving device is rotatably connected with the frame structure, and the output end of the first driving device is rotatably connected with the first pedal so as to drive the first pedal to be unfolded outwards through the opening or folded back inwards through the frame structure;

the second pedal assembly comprises a second pedal and a second driving device, the second pedal is connected with the frame structure in a sliding mode, the second driving device is connected with the frame structure, and the output end of the second driving device is connected with the second pedal so as to drive the second pedal to extend outwards from the opening or retract inwards from the frame structure.

3. The pedal apparatus of claim 2 wherein the first pedal assembly further comprises:

at least one third treadle rotatably coupled to the frame structure;

at least one connecting rod, both ends of the connecting rod are respectively rotatably connected with the first pedal and the third pedal so as to drive the third pedal to synchronously rotate through the rotation of the first pedal,

the first pedal and the third pedal are arranged below the second pedal, the vertical distance between the rotating axis of the first pedal and the second pedal is larger than the rotating radius of the first pedal, and the vertical distance between the rotating axis of the third pedal and the second pedal is larger than the rotating radius of the third pedal.

4. The pedal apparatus according to claim 3,

the third pedal is in a different vertical plane than the first pedal when the first pedal assembly is in a retracted position; wherein,

the first pedal is positioned below the third pedal, when the first pedal assembly is in the unfolding position and the second pedal assembly is in the fully extending position, the sizes of the second pedal, the third pedal and the part of the first pedal positioned outside the opening are sequentially increased from top to bottom along the direction of the opening; or, first footboard is located the top of third footboard, first footboard subassembly is in the expansion position just when second footboard subassembly is in the position of stretching out completely, the second footboard first footboard reaches the third footboard is located the part in the opening outside follows size in the open-ended direction increases from top to bottom in proper order.

5. The pedal apparatus according to claim 3,

the frame construction at least includes and is located two lateral wall boards of opening both sides and with the back wall that the opening is relative, first footboard with the third footboard respectively with two lateral wall board rotatable coupling, the second footboard with two lateral wall board sliding connection.

6. The pedal apparatus according to claim 5,

the first driving device is a self-locking cylinder, a cylinder barrel of the self-locking cylinder is rotatably connected with the rear side wall plate, a piston rod of the self-locking cylinder is rotatably connected with the first pedal, a preset angle is formed between the self-locking cylinder and the first pedal, and the axis of the self-locking cylinder does not intersect with the rotation axis of the first pedal, wherein the self-locking cylinder can be locked when the piston rod moves to the limit position; and/or

The second driving device is a telescopic cylinder, the telescopic cylinder is arranged at one end, deviating from the opening, of the second pedal and is arranged along the sliding direction of the second pedal, a cylinder barrel of the telescopic cylinder is connected with the rear side wall plate, and a piston rod of the telescopic cylinder is connected with the second pedal.

7. The pedal apparatus of claim 5 wherein the second pedal assembly further comprises:

a limit pin shaft, two ends of the limit pin shaft are respectively connected with two side wall plates positioned at two sides of the opening,

limiting holes are arranged on two side walls of the second pedal along the length direction of the limiting pin shaft, the size of the limiting holes along the sliding direction of the second pedal is not smaller than a preset size,

the two ends of the limiting pin shaft penetrate through the two limiting holes correspondingly arranged, and the limiting of the second pedal is achieved through the matching of the limiting pin shaft and the limiting holes.

8. The pedal apparatus according to claim 5, further comprising:

the first limiting part is arranged on at least one side wall plate connected with the first pedal, and the first limiting part is arranged corresponding to the first pedal so as to limit the first pedal through the first limiting part when the first pedal is turned outwards; and/or

The second limiting part is arranged on at least one side wall plate connected with the third pedal and corresponds to the third pedal, so that when the third pedal turns outwards, the third pedal is limited through the second limiting part; and/or

And the at least one third limiting part is arranged on at least one side wall plate connected with the third pedal, so that when the third pedal is retracted towards the inner side of the frame structure, the third pedal is limited through the third limiting part.

9. The pedal apparatus according to any one of claims 1 to 8, further comprising:

the position detection device is arranged on the frame structure and is used for detecting the position state of the first pedal assembly and/or the second pedal assembly;

the controller is electrically connected with the first pedal assembly, the second pedal assembly and the position detection device, and controls the rotation of the first pedal assembly and/or controls the extension and retraction of the second pedal assembly according to a position state signal of the first pedal assembly;

and the alarm device is electrically connected with the controller, and when the position state of the first pedal assembly and/or the second pedal assembly is not matched with the target position corresponding to the control instruction of the controller, the controller controls the alarm device to give out an alarm prompt.

10. A vehicle, characterized by comprising:

a vehicle body;

at least one pedal arrangement according to any one of claims 1 to 9, said pedal arrangement being connected to said vehicle body.