An adjustable operating pedal mechanism for an industrial vehicle

Abstract

The present invention discloses an adjustable operating pedal mechanism for an industrial vehicle, which includes a mounting seat (1) fixed to the vehicle frame, a pedal bracket (2) disposed above the mounting seat (1), a driving device with its lower end connected to the mounting seat (1) and its upper end connected to the pedal bracket (2) for driving the pedal bracket (2) to move up and down, a brake pedal (8) connected to the pedal bracket (2), and a master brake cylinder (9). The height of the adjustable operating pedal mechanism for the industrial vehicle is adjustable, which can better adapt to operators of different heights and improve the user experience and comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an adjustable operating pedal mechanism for industrial vehicles. Background Art

[0002] The operating pedal mechanism is an important component for the operator to interact with the vehicle. Therefore, the stability and comfort of the operating pedal mechanism will directly affect the operator's usage experience and are the main components of the vehicle's performance.

[0003] For sit-down industrial vehicles, such as forklifts, the height of the operating pedal mechanism for the operator will directly affect the effectiveness of the operator's operation of the pedal. For a fixed and non-adjustable operating pedal, it cannot be well adapted to operators of various heights. If the position of the operator relative to the operating pedal mechanism is incorrect or uncomfortable, when the operator operates the pedal, the pedal may not be depressed fully, resulting in, for example, the brake pedal not working or having insufficient force, leading to dangerous driving conditions; or it may cause difficulty in exerting force on the foot when stepping on the pedal, making the operator's foot extremely tired after a day of operation and also prone to dangerous driving conditions.

[0004] Existing operating pedal mechanisms all adopt a fixed and non-adjustable method, resulting in different degrees of comfort for each operator when operating the vehicle with different heights. Some will be more comfortable, while some operators will feel very awkward and have difficulty exerting force, sometimes causing the pedal not to be depressed fully and resulting in dangerous driving, or causing leg fatigue for the operator; the pedal mechanism cannot change the boarding height, and when meeting the appropriate operating position, the ground clearance of the pedal mechanism may be relatively high, which is not conducive to getting on and off the vehicle; the rotation hinge point of the brake pedal is relatively far from the rotation point of the operator's foot, resulting in a mismatch between the movement of the brake pedal and the movement of the foot when the operator steps on the brake pedal, forming a relatively large relative movement, making it uncomfortable and strenuous for the foot to exert force when stepping on the brake pedal.

[0005] In summary, how to effectively solve the problems that the operating pedal mechanism of sit-down storage vehicles is non-adjustable, cannot adapt to operators of different heights, and the user experience and comfort are poor is an urgent problem for those skilled in the art at present. Summary of the Invention

[0006] The purpose of the present invention is to provide an adjustable operating pedal mechanism for industrial vehicles, which is height-adjustable, can better adapt to operators of different heights, and improve the user experience and comfort.

[0007] To solve the above technical problems, the present invention provides the following technical solutions:

[0008] An adjustable operating pedal mechanism for an industrial vehicle, comprising a mounting seat fixed to the vehicle frame, a pedal bracket disposed above the mounting seat, a driving device having a lower end connected to the mounting seat and an upper end connected to the pedal bracket for driving the pedal bracket to move up and down, a brake pedal connected to the pedal bracket, and a master brake cylinder.

[0009] Preferably, the driving device is an electric push rod.

[0010] Preferably, the mounting seat is connected to the shaft seat of the pedal bracket through a linear sliding bushing, and the shaft seat can slide up and down relative to the shaft of the mounting seat.

[0011] Preferably, it further includes two moving guide wheel assemblies mounted on the vehicle frame, and the guide wheels of the two moving guide wheel assemblies are respectively tangent to both sides of the vertical plate of the pedal bracket.

[0012] Preferably, it further includes a transition hinge point bracket, a connecting rod and a tension spring. The pedal bracket includes a long shaft, a short shaft and a tension spring fixing plate. The transition hinge point bracket is mounted on the long shaft through an oil-impregnated bearing and can rotate around the long shaft. The first hinge point of the transition hinge point bracket is hinged to the lower end of the connecting rod, and the second hinge point is hinged to the hinge point of the master brake cylinder. The master brake cylinder is fixed on the pedal bracket;

[0013] The brake pedal is mounted on the short shaft through an oil-impregnated bearing and can rotate around the short shaft. The middle part of the brake pedal is hinged to the upper end of the connecting rod. One end of the tension spring is hung on the brake pedal, and the other end is hung on the tension spring fixing plate.

[0014] Preferably, the tension spring fixing plate has a connection hole, and a rubber buffer pad is connected in the connection hole.

[0015] Preferably, it further includes a detection switch. The detection switch is mounted on the pedal bracket through a switch bracket, and the switch bracket can be adjusted up and down relative to the pedal bracket.

[0016] Preferably, the switch bracket is a right-angle plate. The detection switch is connected to one right-angle plate of the switch bracket, and the detection switch can be adjusted back and forth relative to the switch bracket.

[0017] Preferably, it further includes an operating platform bottom plate and a safety pedal. The operating platform bottom plate is connected to the upper plate of the pedal bracket. The operating platform bottom plate has an opening, and the safety pedal is mounted at the opening of the operating platform bottom plate.

[0018] The adjustable operation pedal mechanism for industrial vehicles provided by the present invention includes a mounting seat, a pedal bracket, a driving device, a brake pedal and a master brake cylinder. The mounting seat is fixed to the vehicle frame. Specifically, the mounting seat can be fixed to the vehicle frame by bolts and remains stationary. The pedal bracket is arranged above the mounting seat. The brake pedal and the master brake cylinder are connected to the pedal bracket. The brake pedal and the master brake cylinder can make the vehicle brake and stop. Preferably, the accelerator pedal is fixed to the pedal bracket by screws, which can achieve quick braking and is relatively reliable. The lower end of the driving device is connected to the mounting seat, and the upper end is connected to the pedal bracket. The driving device can drive the pedal bracket and the components thereon to move up and down relative to the mounting seat.

[0019] Applying the technical solution provided by the embodiment of the present invention, when the driving device receives a rising signal, the telescopic rod of the driving device gradually extends. Since the rod end of the driving device is installed on the support of the pedal bracket, when the telescopic rod extends, it will push the pedal bracket upward. When the driving device receives a stop signal, the driving device stops moving, and the pedal bracket also stops moving after losing the thrust and locks at the current position. Similarly, when the driving device receives a descending signal, the driving device reverses, and the pedal bracket descends accordingly. Because the pedal bracket will rise and fall smoothly with the lifting of the driving device, the parts installed on the pedal bracket will also rise and fall with the lifting of the pedal bracket, thus realizing the stepless adjustment of the operation pedal.

[0020] The height of the adjustable operation pedal mechanism for industrial vehicles provided by the present invention is adjustable, effectively solving the problem that the operation height of the pedal mechanism cannot be adjusted, better meeting and adapting to the operation requirements of operators of different heights, and improving the user experience and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is an exploded view of the adjustable operation pedal mechanism for industrial vehicles provided by a specific embodiment of the present invention;

[0023] Figure 2 For Figure 1 the schematic structural diagram of the pedal bracket in

[0024] Figure 3 It is a schematic diagram of the hinge point of the brake pedal.

[0025] The reference signs in the drawings are as follows:

[0026] Mounting base 1, pedal bracket 2, linear sliding bushing 3, transition hinge point bracket 4, oil-impregnated bearing 5, connecting rod 6, tension spring 7, brake pedal 8, master brake cylinder 9, switch bracket 10, detection switch 11, operating platform bottom plate 12, safety pedal 13, rubber buffer pad 14, electric push rod 15, ear plate 16, moving guide wheel assembly 17, accelerator pedal 18, long shaft 21, tension spring fixing plate 22, short shaft 23, vertical plate 24, support 25. Specific implementation manner

[0027] The core of the present invention is to provide an adjustable operating pedal mechanism for industrial vehicles. The height of the adjustable operating pedal mechanism for industrial vehicles can be adjusted, which can better adapt to operators of different heights and improve the user experience and comfort.

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1 to 3 , Figure 1 which is an exploded view of the adjustable operating pedal mechanism for industrial vehicles provided by a specific implementation manner in the present invention; Figure 2 is Figure 1 the structural schematic diagram of the pedal bracket in Figure 3 and is the hinge point schematic diagram of the brake pedal.

[0030] In a specific implementation manner, the adjustable operating pedal mechanism for industrial vehicles provided by the present invention is used for industrial vehicles and includes a mounting base 1 fixed to the vehicle frame, a pedal bracket 2 arranged above the mounting base 1, a driving device connected to the lower end of the mounting base 1 and the upper end of the pedal bracket 2 for driving the pedal bracket 2 to move up and down, a brake pedal 8 and a master brake cylinder 9 connected to the pedal bracket 2.

[0031] In the above structure, the adjustable operating pedal mechanism for industrial vehicles is used for industrial vehicles, such as forklifts. The adjustable operating pedal mechanism for industrial vehicles includes a mounting base 1, a pedal bracket 2, a driving device, a brake pedal 8, a master brake cylinder 9, and an accelerator pedal 18. The mounting base 1 is fixed to the vehicle frame. Specifically, the mounting base 1 can be fixed to the vehicle frame by bolts and remains stationary. The pedal bracket 2 is disposed above the mounting base 1. The brake pedal 8, the master brake cylinder 9, and the accelerator pedal 18 are connected to the pedal bracket 2. The brake pedal 8 and the master brake cylinder 9 can stop the vehicle, and the accelerator pedal 18 is used to transmit an acceleration signal. The lower end of the driving device is connected to the mounting base 1, and the upper end is connected to the pedal bracket 2. The driving device can drive the pedal bracket 2 and the components thereon to move up and down relative to the mounting base 1.

[0032] Applying the technical solution provided by the embodiment of the present invention, when the driving device receives a rising signal, the telescopic rod of the driving device gradually extends. Since the rod end of the driving device is installed on the support 25 of the pedal bracket 2, when the telescopic rod extends, it will push the pedal bracket 2 upward. When the driving device receives a stop signal, the driving device stops moving, and the pedal bracket 2 also stops moving after losing the thrust and locks in the current position. Similarly, when the driving device receives a descending signal, the driving device reverses, and the pedal bracket 2 descends accordingly. Since the pedal bracket 2 will rise and fall smoothly with the rise and fall of the driving device, the parts installed on the pedal bracket 2 will also rise and fall with the rise and fall of the pedal bracket 2, thereby realizing stepless adjustment of the operating pedal.

[0033] The height of the adjustable operating pedal mechanism for industrial vehicles provided by the present invention is adjustable, effectively solving the problem that the operating height of the pedal mechanism cannot be adjusted, better meeting and adapting to the operating requirements of operators of different heights, and improving the user experience and comfort.

[0034] On the basis of the above specific implementation manner, the driving device is an electric push rod 15. Preferably, the upper end of the electric push rod 15 is hinged to the support 25 of the pedal bracket 2 through an ear plate 16, and the lower end is hinged to the connecting seat of the mounting base 1 through an ear plate 16.

[0035] Using the electric push rod 15 as the power device is simple, convenient, reliable, has a simple structure, is easy to install, and is inexpensive; it makes the lifting adjustment of the pedal mechanism stable, reliable, and smooth, can realize stepless adjustment of the height, and lock at any position in the stroke.

[0036] On the basis of any of the above embodiments, the mounting seat 1 is connected to the shaft seat of the pedal bracket 2 through the linear sliding bushing 3, and the shaft seat can slide up and down relative to the shaft of the mounting seat 1. The linear sliding bushing 3 is selected between the shaft seat and the shaft, so that the up and down motion system has a simple structure, convenient installation, and convenient maintenance; it can form a good protection for the shaft seat and the shaft when sliding up and down, and can control the swing of the pedal mechanism when it moves up and down within a relatively small range, and has good stability.

[0037] On the basis of the above-mentioned specific embodiments, it also includes two motion guide wheel assemblies 17 installed on the frame. The two motion guide wheel assemblies 17 are respectively arranged on both sides of the vertical plate 24 of the pedal bracket 2. The guide wheels of the two motion guide wheel assemblies 17 are respectively tangent to the two sides of the vertical plate 24 of the pedal bracket 2, so that the brake pedal 8 can be raised and lowered along a predetermined route when moving up and down, and will not rotate and swing around the sliding axis, and there will be no torsion problems, making the movement of the mechanism more stable.

[0038] For ease of description, the above features are combined and explained below.

[0039] When the electric push rod 15 receives the rising signal from the electric control, the motor rotates forward and the electric push rod 15 gradually extends. Since the rod end of the electric push rod 15 is installed on the support 25 of the pedal bracket 2, when the electric push rod 15 extends, it will push the pedal bracket 2 to move upward. Because a linear sliding bushing 3 is used between the shaft seat of the pedal bracket 2 and the shaft of the mounting seat 1, when the pedal bracket 2 moves upward under the action of the electric push rod 15, the shaft seat of the pedal bracket 2 will slide upward relative to the mounting seat 1, and under the action of the linear sliding bushing 3, the sliding will not be stuck, nor will it shake during the rising process, and the linear sliding bushing 3 will protect the shaft and the shaft seat, so neither will wear. In addition, two moving guide wheels are installed on the frame, and are tangent to the two sides of the vertical plate 24 of the pedal bracket 2, respectively, so that the vertical plate 24 will not deflect relative to the moving guide wheel, thereby realizing the smooth upward movement of the pedal bracket 2.

[0040] When the electric push rod 15 receives a stop signal, the electric push rod 15 stops moving, and the pedal bracket 2 also stops moving after losing the thrust, and is locked at the current position. Similarly, when the electric push rod 15 receives a descending signal, the electric push rod 15 reverses, and the pedal bracket 2 descends accordingly. Because the pedal bracket 2 rises and falls smoothly with the rise and fall of the electric push rod 15, the parts installed on the pedal bracket 2 also rise and fall with the rise and fall of the pedal bracket 2, thereby realizing stepless adjustment of the operating pedal.

[0041] In another relatively reliable embodiment, based on any of the above embodiments, it further includes a transition hinge point bracket 4, a connecting rod 6, and a tension spring 7. The pedal bracket 2 includes a long shaft 21, a short shaft 23, and a tension spring fixing plate 22. The transition hinge point bracket 4 is installed on the long shaft through an oil-impregnated bearing 5 and can rotate around the long shaft. The first hinge point of the transition hinge point bracket 4 can be hinged to the lower end of the connecting rod 6 through a split pin and an opening pin, and the second hinge point is hinged to the hinge point of the master cylinder 9. The master cylinder 9 is fixed on the pedal bracket 2.

[0042] The brake pedal 8 is installed on the short shaft 23 through an oil-impregnated bearing 5 and can rotate around the short shaft 23. The middle part of the brake pedal 8 can be hinged to the upper end of the connecting rod 6 through a split pin and an opening pin. One end of the tension spring 7 is hung on the brake pedal 8, and the other end is hung on the tension spring fixing plate 22.

[0043] As Figure 3 shown, when a person steps on the brake pedal 8, the brake pedal 8 rotates around the hinge point A, and drives the connecting rod 6 to move through the hinge point C. The connecting rod 6 drives the transition hinge point bracket 4 to rotate around the hinge point B through the hinge point D. Since both the hinge point A and the hinge point B are equipped with oil-impregnated bearings 5, the rotation is relatively smooth. When the transition hinge point bracket 4 rotates with the rotation of the brake pedal 8, it will drive the push rod of the master cylinder 9 to move, thus achieving the braking effect. With such a design, the rotation hinge point of the brake pedal 8 is very close to the rotation point of the human foot. Therefore, when a person steps on the brake pedal 8, the rotation trajectory of the brake pedal 8 is very close to the rotation rule of the human foot, thereby greatly reducing the relative movement between the foot and the brake pedal 8.

[0044] Through the kinematic analysis of the structure, the brake pedal 8 selects a reasonable hinge point position and adds a rod system for transition, which can basically ensure that the brake pedal 8 and the operator's foot rotate in coordination, making the movement of the brake pedal 8 more coordinated with the movement during foot braking; greatly improving the comfort of the foot when stepping on the pedal to brake, and making the operator very comfortable when operating the brake pedal 8.

[0045] Based on the above various specific embodiments, the tension spring fixing plate 22 has a connection hole, and a rubber buffer pad 14 is connected in the connection hole. Preferably, the number of rubber buffer pads 14 is two and they are evenly distributed. When the pedal bracket 2 moves downward, the rubber buffer pad 14 contacts the mounting seat 1. The rubber buffer pad 14 has a buffering and shock-absorbing effect, reducing the vibration and damage of the pedal bracket 2 and its components. Preferably, the rubber buffer pad 14 is fixed to the tension spring fixing plate 22 through a nut, which is convenient for connection and convenient for up and down adjustment.

[0046] In another relatively reliable embodiment, based on any of the above embodiments, it further includes a detection switch 11. The purpose of providing the detection switch 11 is to transmit a signal to the brake light to provide information about vehicle braking to the outside. The arrangement of the detection switch 11 is as Figure 3As shown, in this state, since the overlapping area between the brake pedal 8 and the detection switch 11 is insufficient to enable the detection switch 11 to generate a valid signal, the detection switch 11 cannot detect the brake pedal 8. When the brake pedal 8 rotates counterclockwise, the overlapping area between the detection switch 11 and the brake pedal 8 gradually increases, causing the detection switch 11 to generate a valid detection signal at a certain position.

[0047] The detection switch 11 is installed on the pedal bracket 2 through the switch bracket 10. The switch bracket 10 can be adjusted vertically relative to the pedal bracket 2. Specifically, it can be the side round hole of the pedal bracket 2. The switch bracket 10 has a waist-shaped hole in the vertical direction. The switch bracket 10 and the pedal bracket 2 are connected by bolts at the round hole and the waist-shaped hole. The waist-shaped hole of the switch bracket 10 can move up and down along the bolt, that is, the connection position of the switch bracket 10 can be adjusted vertically, realizing the vertical adjustment of the detection switch 11. Adjusting the height of the detection switch 11 can control when the switch can generate a signal, thus achieving the effect of adjustable detection.

[0048] Based on the above various specific embodiments, the switch bracket 10 is a right-angle plate. One of the right-angle plates is fixed on the pedal bracket 2, and the detection switch 11 is connected to the other right-angle plate of the switch bracket 10. Usually, the detection switch 11 and the switch bracket 10 are connected by screws, which is convenient for connection. The right-angle plate of the switch bracket 10 has a relatively long length, and the connection position can be adjusted, thereby realizing that the detection switch 11 can be adjusted back and forth relative to the switch bracket 10, that is, realizing that the detection switch 11 can be adjusted back and forth relative to the front of the brake pedal 8. By adjusting the distance between the detection switch 11 and the brake pedal 8, the purpose of adjustable detection can also be achieved.

[0049] The detection distance and position of the detection switch 11 can both be adjusted, making the whole mechanism more convenient and flexible to use during the assembly process, facilitating assembly and debugging, and reducing the requirements for manufacturing precision, which is convenient for processing and manufacturing.

[0050] In another more reliable embodiment, based on any one of the above embodiments, it further includes an operating platform bottom plate 12 and a safety pedal 13. The operating platform bottom plate 12 is connected to the upper plate of the pedal bracket 2. The operating platform bottom plate 12 and the pedal bracket 2 are connected by bolts, which is a detachable connection.

[0051] The operating platform bottom plate 12 has an opening, and the safety pedal 13 is installed at the opening of the operating platform bottom plate 12. Through the opening, the connectors of the fully open safety pedal 13 can be taken out and plugged in before disassembly. Therefore, during maintenance, the safety pedal 13 and the operating platform bottom plate 12 can be removed integrally, and the operation is simple. After removing the operating platform bottom plate 12, there is enough space to inspect and repair the whole set of mechanisms, making the inspection and repair of the whole set of mechanisms very convenient and improving the maintainability of the mechanisms. It is also beneficial to install the whole set of mechanisms on the vehicle frame, so as to achieve the purpose of convenient maintenance and disassembly.

[0052] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, reference can be made to each other.

[0053] The above has introduced in detail the adjustable operating pedal mechanism of the industrial vehicle provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this article, but rather to the widest scope consistent with the principles and novel features disclosed in this article.

Claims

1. An adjustable operating pedal mechanism for an industrial vehicle, characterized in that, It includes a mounting seat (1) fixed to the vehicle frame, a pedal bracket (2) arranged above the mounting seat (1), a driving device with its lower end connected to the mounting seat (1) and its upper end connected to the pedal bracket (2) for driving the pedal bracket (2) to move up and down, a brake pedal (8) and a master brake cylinder (9) connected to the pedal bracket (2), and also includes two moving guide wheel assemblies (17) mounted on the vehicle frame. The guide wheels of the two moving guide wheel assemblies (17) are respectively tangent to both sides of the vertical plate (24) of the pedal bracket (2). It further includes a detection switch (11). When the brake pedal (8) rotates counterclockwise, the overlapping area between the detection switch (11) and the brake pedal (8) gradually increases, causing the detection switch (11) to generate an effective detection signal at a certain position. The detection switch (11) is mounted on the pedal bracket (2) through a switch bracket (10). The switch bracket (10) can be adjusted up and down relative to the pedal bracket (2). The switch bracket (10) is a right-angle plate. The detection switch (11) is connected to one of the right-angle plates of the switch bracket (10), and the detection switch (11) can be adjusted back and forth relative to the switch bracket (10). It also includes a transition hinge point bracket (4), a connecting rod (6), and a tension spring (7). The pedal bracket (2) includes a long shaft (21), a short shaft (23), and a tension spring fixing plate (22). The transition hinge point bracket (4) is mounted on the long shaft through an oil-impregnated bearing (5) and can rotate around the long shaft. The first hinge point of the transition hinge point bracket (4) is hinged to the lower end of the connecting rod (6), and the second hinge point is hinged to the hinge point of the master brake cylinder (9). The master brake cylinder (9) is fixed on the pedal bracket (2). The brake pedal (8) is mounted on the short shaft (23) through an oil-impregnated bearing (5) and can rotate around the short shaft (23). The middle part of the brake pedal (8) is hinged to the upper end of the connecting rod (6). One end of the tension spring (7) is hung on the brake pedal (8), and the other end is hung on the tension spring fixing plate (22).

2. The adjustable operating pedal mechanism for an industrial vehicle according to claim 1, wherein The driving device is an electric push rod (15).

3. The adjustable operating pedal mechanism for an industrial vehicle according to claim 2, wherein, The mounting seat (1) is connected to the shaft seat of the pedal bracket (2) through a linear sliding bushing (3), and the shaft seat can slide up and down relative to the shaft of the mounting seat (1).

4. The adjustable operating pedal mechanism for an industrial vehicle according to claim 1, characterized in that, The tension spring fixing plate (22) has a connection hole, and a rubber buffer pad (14) is connected in the connection hole.

5. The adjustable operating pedal mechanism for an industrial vehicle according to any one of claims 1-3, characterized in that It further includes an operation platform bottom plate (12) and a safety pedal (13). The operation platform bottom plate (12) is connected to the upper plate of the pedal bracket (2). The operation platform bottom plate (12) has an opening, and the safety pedal (13) is mounted at the opening of the operation platform bottom plate (12).

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