Electrically powered lift footrest

Abstract

The application provides an electric lifting type footrest, which comprises a footrest base, a footrest cover plate and vertical side frame plates, the footrest cover plate is arranged between the side frame plates, the footrest base is provided with a rocker arm driving mechanism and a rocker arm linkage assembly, and the side frame plates are connected with the footrest base through the rocker arm linkage assembly. In the application, the first rocker arm, the second rocker arm and the first connecting arm move in parallelogram motion as a whole, and the third rocker arm also rotates relative to the hinge point of the first connecting arm, so that the two hinge points of the side frame plates connected with the third rocker arm and the fourth rocker arm have the superposition of two motions, so that the footrest cover plate can be lifted close to vertical as a whole, and the inclination angle can be adjusted, and when the footrest cover plate is lifted to the highest point, the inclination angle is close to horizontal, which not only can further reduce the space arranged in front and back, but also can be more suitable for the habit of placing feet after lifting, and the use experience of users is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cab pedal, in particular to an electric lifting type foot pedal. BACKGROUND

[0002] The bottom end of the cab of rail transit, vehicles and the like is usually provided with a pedal, and the driver steps on the pedal to operate. Since the bottom end of the cab of rail transit or vehicles is usually narrow, the driver's feet are prone to fatigue after a long time of driving. Different drivers feel comfortable at different heights of the pedal due to their height and the like. Different drivers can reduce the fatigue of their feet by changing the height of the pedal to a comfortable position, or the same driver can also adjust the height of the pedal to adjust the posture of the feet, so as to achieve the purpose of relaxation.

[0003] Chinese patent application publication CN108583600A discloses an electric foot pedal device and an adjusting method thereof. The device includes two side frame plates arranged vertically and a foot pedal plate with an angle of 15 degrees with the horizontal plane. The two side frame plates are arranged side by side, and the foot pedal plate is fixed on the two side frame plates. A rocker arm adjusting power mechanism is arranged between the two side frame plates, below the foot pedal plate and positioned on the ground. The adjusting movement of the rocker arm adjusting power mechanism drives the two side frame plates to swing synchronously and in the same direction, thereby adjusting the position of the foot pedal plate. The rocker arm adjusting power mechanism includes two bottom plate supports (31) fixed on the ground, a swing arm power assembly (32), and a rocker arm connecting rod assembly (33). The two bottom plate supports (31) are connected through the rocker arm connecting rod assembly (33), and the two side frame plates (2) are arranged on the rocker arm connecting rod assembly (33). The swing arm power assembly (32) is arranged on one bottom plate support (31) and is in transmission connection with the rocker arm connecting rod assembly (33). Starting the swing arm power assembly (32) drives the rocker arm connecting rod assembly (33) to swing in a circular arc on the bottom plate support (31), thereby driving the two side frame plates (2) to swing synchronously and in the same direction. The rocker arm connecting rod assembly (33) includes four rocker arms (33.1) and two connecting rods (33.2). The two sides of the bottom plate support (31) are respectively hinged with one rocker arm (33.1), and the four rocker arms (33.1) are arranged in a rectangular shape. The rocker arms (33.1) on the same side of the bottom plate support (31) are connected through the connecting rod (33.2), and the side frame plate (2) is arranged on the rocker arm (33.1) on the same side of the bottom plate support (31). The rocker arms (33.1) on the two sides of one bottom plate support (31) are respectively fixed with the swing arm power assembly (32). Starting the swing arm power assembly (32) drives the rocker arms (33.1) on the two sides of one bottom plate support (31) to swing, thereby driving the rocker arms (33.1) on the two sides of the other bottom plate support (31) to swing synchronously and in the same direction, and driving the two side frame plates (2) to swing synchronously and in the same direction. In this scheme, the rocker arm rotates around the hinge point, so the pedal controlled by the rocker arm can only have a parallelogram motion. When the pedal needs to be rotated and lifted while adjusting the inclination angle and changing the position of the pedal less, it is difficult to achieve this through this scheme. SUMMARY

[0004] The present application aims to provide a pedal with a more reasonable adjustment mode to overcome the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides an electric lifting type pedal, which comprises a pedal base, a pedal cover plate, and a side frame plate arranged vertically. The pedal cover plate is arranged between the side frame plates, and the pedal base is provided with a rocker arm driving mechanism and a rocker arm connecting rod assembly. The side frame plate is connected with the pedal base through the rocker arm connecting rod assembly, and the rocker arm driving mechanism is used to drive the rocker arm connecting rod assembly to move.

[0006] The rocker arm linkage assembly comprises a main rotating shaft, a first rocker arm connected to the end of the main rotating shaft, and a second rocker arm connected to the pedal base, and a first connecting arm is hinged between the first rocker arm and the second rocker arm to synchronize the movement between the first rocker arm and the second rocker arm.

[0007] The first end of the first connecting arm is hinged with a third rocker arm, and the second end of the first connecting arm is hinged with a fourth rocker arm, and the third rocker arm and the fourth rocker arm are connected to the two ends of the side frame plate respectively.

[0008] Further, the second connecting arm and the third connecting arm are provided, the two ends of the second connecting arm are hinged with the second rocker arm and the third rocker arm respectively, and the two ends of the third connecting arm are hinged with the first rocker arm and the fourth rocker arm respectively.

[0009] Further, the two ends of the first connecting arm are provided with two hinge points, the first rocker arm and the third rocker arm are hinged at the two different hinge points of the first end of the first connecting arm, and the second rocker arm and the fourth rocker arm are hinged at the two different hinge points of the second end of the first connecting arm.

[0010] Further, the first end of the first rocker arm is fixedly connected with the main rotating shaft, the first end of the second rocker arm is hinged with the pedal base, and the second ends of the first rocker arm and the second rocker arm are provided with two hinge points, the two hinge points of the first rocker arm are used for hinging the first connecting arm and the third connecting arm respectively, and the two hinge points of the second rocker arm are used for hinging the first connecting arm and the second connecting arm respectively.

[0011] Further, the first ends of the third rocker arm and the fourth rocker arm are hinged with the side frame plate, and the second ends of the third rocker arm and the fourth rocker arm are provided with two hinge points, the two hinge points of the third rocker arm are used for hinging the first connecting arm and the second connecting arm respectively, and the two hinge points of the fourth rocker arm are used for hinging the first connecting arm and the third connecting arm respectively.

[0012] Further, the rocker arm driving mechanism is an electric push rod.

[0013] Further, the telescopic end of the electric push rod is connected with the main rotating shaft through a transmission block to drive the main rotating shaft to rotate.

[0014] The above-mentioned scheme of the present application has the following beneficial effects:

[0015] The electric lifting type pedal provided by the present application is provided with a third rocker arm, a fourth rocker arm, a second connecting arm and a third connecting arm in the rocker arm connecting rod assembly, so that the first rocker arm, the second rocker arm and the first connecting arm make parallelogram movement, and the third rocker arm and the first rocker arm also make rotary movement relative to the hinged point of the first connecting arm, so that the two hinged points of the side frame plate connected with the third rocker arm and the fourth rocker arm have two superimposed movements, so that the pedal cover plate can be lifted close to vertically as a whole, and the inclination angle can be adjusted, and when the pedal cover plate is lifted to the highest point, the pedal cover plate is close to the horizontal angle, the adjustment mode of the pedal not only can further reduce the front and rear arrangement space, but also can be more suitable for the habit of placing the user's foot after lifting, and further improves the user's experience.

[0016] Other benefits of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a schematic diagram of the rocker arm connecting rod assembly of the present application;

[0019] Figure 3 It is a schematic diagram of the first rocker arm, the second rocker arm and the first connecting arm of the present application;

[0020] Figure 4 It is a schematic diagram of the second connecting arm and the third connecting arm of the present application.

[0021]

Explanation of reference numerals

[0022] 1-pedal base; 2-pedal cover plate; 3-side frame plate; 4-main rotating shaft; 5-first rocker arm; 6-second rocker arm; 7-first connecting arm; 8-third rocker arm; 9-fourth rocker arm; 10-second connecting arm; 11-third connecting arm; 12-electric push rod; 13-transmission block. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and advantages of the present application clearer, the following will be described in detail in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application. In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be a locking connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] As Figures 1-4 shown, the embodiment of the present application provides an electric lifting type pedal, which comprises a pedal base 1, a pedal cover plate 2 and a vertical side frame plate 3. Wherein, the pedal cover plate 2 is arranged between the side frame plates 3, the pedal base 1 is provided with a rocker arm driving mechanism and a rocker arm linkage assembly, the side frame plate 3 is connected with the pedal base 1 through the rocker arm linkage assembly, and the rocker arm driving mechanism is used to drive the rocker arm linkage assembly to move, so as to drive the side frame plates 3 on both sides and the pedal cover plate 2 between them to move and adjust.

[0027] In the embodiment, the rocker arm linkage assembly comprises a main rotating shaft 4, a first rocker arm 5 connected at the end of the main rotating shaft 4, and a second rocker arm 6 connected on the pedal base 1, and a first connecting arm 7 is hinged between the first rocker arm 5 and the second rocker arm 6, so that the first rocker arm 5 and the second rocker arm 6 move synchronously.

[0028] Therefore, through the arrangement of the first rocker arm 5, the second rocker arm 6 and the first connecting arm 7, when the main rotating shaft 4 rotates, the first rocker arm 5, the second rocker arm 6 and the first connecting arm 7 as a whole perform parallelogram motion. If the first rocker arm 5 and the second rocker arm 6 are directly connected with the side frame plate 3, the side frame plate 3 and the pedal cover plate 2 will also perform parallelogram motion, so that the inclination angle cannot be adjusted, and the pedal cover plate 2 cannot be kept above the pedal base 1, etc.

[0029] Based on this, the rocker linkage assembly in the embodiment further comprises a third rocker 8, a fourth rocker 9, a second connecting arm 10, and a third connecting arm 11. The first end of the first rocker 5 or the first connecting arm 7 is hingedly connected to the third rocker 8, and the second end of the second rocker 6 or the first connecting arm 7 is hingedly connected to the fourth rocker 9. The third rocker 8 and the fourth rocker 9 are respectively connected to the two ends of the side frame plate 3. The two ends of the second connecting arm 10 are respectively hingedly connected to the second rocker 6 and the third rocker 8, and the two ends of the third connecting arm 11 are respectively hingedly connected to the first rocker 5 and the fourth rocker 9.

[0030] In the embodiment, the two ends of the first connecting arm 7 are respectively provided with two hinging points. The first rocker 5 and the third rocker 8 are respectively hingedly connected to the two different hinging points at the first end of the first connecting arm 7, and the second rocker 6 and the fourth rocker 9 are respectively hingedly connected to the two different hinging points at the second end of the first connecting arm 7, so that the hinging arrangement is more convenient.

[0031] Meanwhile, the first end of the first rocker 5 is fixedly connected to the main rotating shaft 4 for synchronous transmission. The second end of the first rocker 5 and the second end of the second rocker 6 are respectively provided with two hinging points. The two hinging points of the first rocker 5 are respectively used for hingedly connecting the first connecting arm 7 and the third connecting arm 11, and the two hinging points of the second rocker 6 are respectively used for hingedly connecting the first connecting arm 7 and the second connecting arm 10.

[0032] In addition, the first end of the third rocker 8 and the first end of the fourth rocker 9 are hingedly connected to the side frame plate 3. The second end of the third rocker 8 and the second end of the fourth rocker 9 are respectively provided with two hinging points. The two hinging points of the third rocker 8 are respectively used for hingedly connecting the first connecting arm 7 and the second connecting arm 10, and the two hinging points of the fourth rocker 9 are respectively used for hingedly connecting the first connecting arm 7 and the third connecting arm 11.

[0033] Therefore, when the main rotating shaft 4 rotates under the driving of the rocker driving mechanism, the first rocker 5 is driven to rotate synchronously. Assuming that the first rocker 5 performs a sinusoidal motion, the second rocker 6 and the first connecting arm 7 perform a sinusoidal motion synchronously. Therefore, the hinging points of the third rocker 8, the first rocker 5, and the first connecting arm 7 also perform a sinusoidal motion.

[0034] Meanwhile, the hinge points of the first rocker arm 5 and the third rocker arm 8 and the hinge points of the second rocker arm 6 and the fourth rocker arm 9 also make sinusoidal motion, and since the other ends of the third rocker arm 8 and the fourth rocker arm 9 are hinged to the second rocker arm 6 and the fourth rocker arm 9, taking the second connecting arm 10 as an example, based on the deviation of the sinusoidal motion size (i.e. the difference of the rotation radius), the second connecting arm 10 will pull the third rocker arm 8 to make a cosine motion, i.e. the third rocker arm 8 makes a cosine motion relative to the hinge point of the first connecting arm 7, thus the first end of the third rocker arm 8, i.e. the position hinged to the side frame plate 3, forms two motion superpositions relative to the pedal base 1 (the stationary coordinate system), which are the sinusoidal motion synchronized with the first rocker arm 5 and the cosine motion driven by the third rocker arm 8. The analysis of the third connecting arm 11 is similar, which will not be described here.

[0035] Therefore, through the actions of the second connecting arm 10 and the third connecting arm 11, the hinge points of the third rocker arm 8, the fourth rocker arm 9 and the side frame plate 3 have two motion superpositions, so that the pedal cover plate 2 as a whole can be lifted close to vertically and the inclination angle can be adjusted, and when it is lifted to the highest point, the pedal cover plate 2 is close to the horizontal angle. Therefore, the adjustment mode of the pedal not only can further reduce the front and rear arrangement space, but also can be more suitable for the habit of placing the user's feet after lifting, and further improves the user's experience.

[0036] In the embodiment, the rocker arm driving mechanism is an electric push rod 12, and the extension degree of the electric push rod 12 is adjusted in an electric control manner, so as to control the rotation angle of the main rotating shaft 4 and further control the adjustment state of the pedal cover plate 2. As a preferred embodiment, the electric push rod 12 is arranged at one side of the pedal base 1, so as to leave the space between the pedal base 1 and the pedal cover plate 2, i.e. the space inside the pedal, thus the equipment such as the fresh air fan vent can be conveniently arranged.

[0037] Among them, the extension end of the electric push rod 12 is connected with the main rotating shaft 4 through a transmission block 13 to drive the main rotating shaft 4 to rotate. It should be noted that when the electric push rod 12 is arranged at one side of the pedal base 1, the other side can also ensure synchronous driving, as long as the main rotating shaft 4 is small in torsional deformation and can smoothly transmit the torque, so as to ensure the synchronous adjustment of the two sides of the pedal cover plate 2.

[0038] The above describes the preferred embodiment of the present application, and it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. An electric lift pedal, comprising a pedal base, a pedal cover, and vertically arranged side frames, wherein the pedal cover is arranged between the side frames, the pedal base is provided with a rocker drive mechanism and a rocker connecting rod assembly, the side frames are connected to the pedal base via the rocker connecting rod assembly, and the rocker drive mechanism is used to drive the rocker connecting rod assembly to move, characterized in that: The rocker arm connecting rod assembly includes a main rotating shaft, a first rocker arm connected to the end of the main rotating shaft, and a second rocker arm connected to the pedal base, wherein a first connecting arm is hingedly connected between the first rocker arm and the second rocker arm to enable the first rocker arm and the second rocker arm to move synchronously; The first end of the first connecting arm is hinged to a third rocker arm, and the second end of the first connecting arm is hinged to a fourth rocker arm. The third rocker arm and the fourth rocker arm are respectively connected to two ends of the side frame plate. It also includes a second connecting arm and a third connecting arm, wherein two ends of the second connecting arm are respectively hinged to the second rocker arm and the third rocker arm, and two ends of the third connecting arm are respectively hinged to the first rocker arm and the fourth rocker arm; Two hinge points are provided at both ends of the first connecting arm, the first rocker arm and the third rocker arm are respectively hinged at two different hinge points at the first end of the first connecting arm, and the second rocker arm and the fourth rocker arm are respectively hinged at two different hinge points at the second end of the first connecting arm; The first ends of the third rocker arm and the fourth rocker arm are hinged to the side frame plate, and the second ends of the third rocker arm and the fourth rocker arm are provided with two hinge points. The two hinge points of the third rocker arm are respectively used to hinge the first connecting arm and the second connecting arm, and the two hinge points of the fourth rocker arm are respectively used to hinge the first connecting arm and the third connecting arm.

2. The electric lift footrest according to claim 1, characterized in that: The first end of the first rocker arm is fixedly connected to the main rotating shaft, the first end of the second rocker arm is hinged to the pedal base, and the second ends of the first rocker arm and the second rocker arm are provided with two hinge points, the two hinge points of the first rocker arm are respectively used to hinge the first connecting arm and the third connecting arm, and the two hinge points of the second rocker arm are respectively used to hinge the first connecting arm and the second connecting arm.

3. The electric lift footrest according to claim 1, characterized in that: The rocker arm driving mechanism is an electric push rod.

4. The electric lift footrest according to claim 3, characterized in that: The telescopic end of the electric push rod is connected to the main rotating shaft through a transmission block to drive the main rotating shaft to rotate.

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