Pedal device, vehicle and pedal simulator

Abstract

The embodiment of the utility model provides a pedal device, a vehicle and a pedal simulator, and belongs to the technical field of batteries. The pedal device comprises a pedal, a first hydraulic cylinder and a second hydraulic cylinder; a piston rod of the first hydraulic cylinder is connected with the pedal; a first hydraulic cavity of the first hydraulic cylinder is connected with a second hydraulic cavity of the second hydraulic cylinder through a plurality of branch channels; wherein at least part of the multiple branch channels are provided with branch pistons, and the multiple branch channels are all provided with control valves so that the second hydraulic cavity can be in different pressure intensity states. Different pedal feelings and pedal strokes can be selected according to different drivers or driving scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and more particularly, to a pedal device, a vehicle and a pedal simulator. BACKGROUND

[0002] In the related art, the pedal force and the pedal stroke of a brake pedal of a vehicle are fixed values, and the relationship between the pedal force and the pedal stroke cannot be adjusted, so that different pedal feelings and pedal strokes cannot be selected according to different drivers or driving scenes, and the use experience is poor. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a pedal device, a vehicle and a pedal simulator to select different pedal feelings and pedal strokes according to different drivers or driving scenes.

[0004] In a first aspect, an embodiment of the present application provides a pedal device, comprising:

[0005] a pedal;

[0006] a first hydraulic cylinder, a piston rod of the first hydraulic cylinder being connected to the pedal;

[0007] a second hydraulic cylinder, a first hydraulic cavity of the first hydraulic cylinder being connected to a second hydraulic cavity of the second hydraulic cylinder through a plurality of branch channels; wherein,

[0008] at least part of the plurality of branch channels is provided with a branch piston, and each of the plurality of branch channels is provided with a control valve to enable the second hydraulic cavity to be in different pressure states.

[0009] In the above technical solution, the first hydraulic cavity of the first hydraulic cylinder is connected to the second hydraulic cavity of the second hydraulic cylinder through the plurality of branch channels, and since the pressure that can be transmitted to the second hydraulic cavity of the second hydraulic cylinder by at least two branch channels of the plurality of branch channels is different, by selecting the control valve of different branch channels to be opened, the first hydraulic cavity of the first hydraulic cylinder and the second hydraulic cavity of the second hydraulic cylinder can be connected through different branch channels, so as to change the pressure state of the second hydraulic cavity of the second hydraulic cylinder, and then obtain different pedal feelings and pedal strokes, and increase the use experience of the vehicle.

[0010] In some embodiments, in the case where each of the branch channels is provided with the branch piston, the force receiving area ratios on both sides of at least two branch pistons are different.

[0011] In the case where at least one branch channel is not provided with a branch piston, the force receiving areas on both sides of at least part of the branch pistons are different.

[0012] In some embodiments, the plurality of branch channels comprises:

[0013] The first branch channel is not provided with a branch piston;

[0014] The second branch channel is provided with a second branch piston;

[0015] The third branch channel is provided with a third branch piston; wherein,

[0016] The force area ratio of the second branch piston and the third branch piston on both sides is different and not equal to 1.

[0017] In some embodiments, the branch channel provided with the branch piston comprises a first section and a second section connected in series, the first section is connected with the first hydraulic chamber, the second section is connected with the second hydraulic chamber, and the flow area of the first section and the second section is different.

[0018] The branch piston comprises a first part and a second part, the first part is movably arranged in the first section, and at least part of the second part is movably arranged in the second section.

[0019] In some embodiments, the flow area of the second section corresponding to different branch channels is different.

[0020] In some embodiments, the flow area of the first section corresponding to different branch channels is the same.

[0021] In some embodiments, the first part is provided with a flow channel, the flow channel is open at both ends of the first part along the length direction of the branch channel; and / or,

[0022] A sealing element is arranged between the outer peripheral wall of the second part and the inner peripheral wall of the second section.

[0023] In some embodiments, the length of the second part along the length direction of the branch channel is not less than the length of the first part along the length direction of the branch channel.

[0024] In some embodiments, the first hydraulic cylinder comprises a first cylinder body, a first piston and a first elastic element elastically mounted between the first piston and the first cylinder body;

[0025] The second hydraulic cylinder comprises a second cylinder body, a second piston and a second elastic element elastically mounted between the second piston and the second cylinder body;

[0026] The elastic coefficients of the first elastic element and the second elastic element are different.

[0027] In some embodiments, the cross-sectional areas of the first cylinder body and the second cylinder body are different.

[0028] In some embodiments, further comprising:

[0029] an input module configured to receive user input;

[0030] a controller electrically connected to the control valve and the input module, and configured to control the control valve based on the input information received by the input module.

[0031] In a second aspect, the embodiments of the present application provide a vehicle comprising the pedal device according to any one of the above embodiments.

[0032] In a third aspect, the embodiments of the present application provide a pedal simulator comprising the pedal device according to any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0034] Figure 1 Structure diagram of the pedal device provided by some embodiments of the present application;

[0035] Figure 2 Structure diagram of the pedal device provided by some embodiments of the present application.

[0036] Reference signs:

[0037] Pedal bracket 1, pedal arm 2;

[0038] First hydraulic cylinder 3, first hydraulic cavity 31, piston rod 32, first cylinder body 33, first piston 34, first elastic member 35;

[0039] Second hydraulic cylinder 4, second hydraulic cavity 41, second cylinder body 42, second piston 43, second elastic member 44;

[0040] First branch passage 5, first control valve 51, second branch passage 6, second branch piston 61, second control valve 62, third branch passage 7, first section 71, second section 72, third branch piston 73, first part 731, second part 732, flow channel 733, sealing member 734, third control valve 74. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, rather than to describe a particular order or primary and secondary relationship.

[0043] In the present application, the phrase "embodiments" means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0044] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of 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.

[0045] In the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0046] "Multiple" appearing in the present application means two or more (including two), and similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0047] The inventors find that in the prior art, the pedal force and pedal stroke of the brake pedal of a vehicle are fixed values, and the pedal force and pedal stroke relationship cannot be adjusted, so different pedal feel and pedal stroke cannot be selected according to different drivers or driving scenarios, and the use experience is poor.

[0048] Based on the above considerations, in order to solve the problem that the vehicle cannot select different pedal feel and pedal stroke according to different drivers or driving scenarios, and the use experience is poor, the inventors have designed a pedal device after deep research, which comprises a pedal, a first hydraulic cylinder and a second hydraulic cylinder.

[0049] In the pedal device with the above structure, the first hydraulic cavity of the first hydraulic cylinder and the second hydraulic cavity of the second hydraulic cylinder are connected through a plurality of branch channels, and the pressure of the second hydraulic cavity of the second hydraulic cylinder is different in at least two branch channels of the plurality of branch channels. By selecting the control valve of the different branch channels to be opened, the first hydraulic cavity of the first hydraulic cylinder and the second hydraulic cavity of the second hydraulic cylinder can be connected through different branch channels, so as to change the pressure state of the second hydraulic cavity of the second hydraulic cylinder, and then obtain different pedal feel and pedal stroke, and increase the use experience of the vehicle.

[0050] According to some embodiments of the present application, referring to Figure 1 , the present application provides a pedal device, which can be installed on a vehicle or applied in a laboratory to perform pedal feel test in the laboratory to select different pedal feel for different vehicle models.

[0051] The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile.

[0052] The pedal device of the present application comprises a pedal, a first hydraulic cylinder 3 and a second hydraulic cylinder 4.

[0053] Referring to Figure 1 , the pedal can comprise a pedal bracket 1 and a pedal arm 2 connected in sequence, the pedal arm 2 is connected with the piston rod 32 of the first hydraulic cylinder 3, and the pedal arm 2 can transmit the force of the pedal bracket 1 to the piston rod 32 of the first hydraulic cylinder 3 to transmit the pedal action of the driver to the first hydraulic cylinder 3.

[0054] The pedal can be a brake pedal.

[0055] The piston rod 32 of the first hydraulic cylinder 3 is connected with the pedal. The first hydraulic cylinder 3 can be a master cylinder, the piston rod 32 of the first hydraulic cylinder 3 is connected with the first piston 34 of the first hydraulic cylinder 3, and the force of the pedal support 1 is transmitted to the first piston 34 of the first hydraulic cylinder 3 through the pedal arm 2 and the piston rod 32 of the first hydraulic cylinder 3 in sequence.

[0056] The first hydraulic cavity 31 of the first hydraulic cylinder 3 is connected with the second hydraulic cavity 41 of the second hydraulic cylinder 4 through a plurality of branch channels. The second hydraulic cylinder 4 can be a simulator hydraulic cylinder.

[0057] For example, referring to Figure 1 , the first hydraulic cavity 31 and the second hydraulic cavity 41 can be connected through the first branch channel 5, the second branch channel 6 and the third branch channel 7.

[0058] Both ends of the plurality of branch channels are respectively communicated with the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4, and the pressure state of the second hydraulic cavity 41 of the second hydraulic cylinder 4 transmitted by at least two branch channels of the plurality of branch channels is different, so that the pressure state of the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be selected by selecting different branch channels through the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4, and different pedal feeling and pedal stroke can be obtained.

[0059] Among them, at least part of the plurality of branch channels is provided with a branch piston.

[0060] In this embodiment, all branch channels of the plurality of branch channels can be provided with a branch piston, and by setting the force area ratio of both sides of the branch piston in different branch channels, the pressure state of the second hydraulic cavity 41 of the second hydraulic cylinder 4 transmitted by different branch channels can be different; or part of the plurality of branch channels can be provided with a branch piston, and another part of the plurality of branch channels can not be provided with a branch piston, and the pressure state of the second hydraulic cavity 41 of the second hydraulic cylinder 4 transmitted by the branch channel without the branch piston and the branch channel provided with the branch piston and the force area ratio of both sides of the branch piston is not 1 is different.

[0061] For example, referring to Figure 1 , the first branch channel 5 is not provided with a branch piston, and the second branch channel 6 and the third branch channel 7 are both provided with a branch piston.

[0062] In the case that the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 are communicated through the branch channel without the branch piston, the pressure state of the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 is the same.

[0063] In the case that the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 are communicated through the branch channel provided with the branch piston and the force area ratio of the two sides of the branch piston is 1, the pressure states of the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 are the same.

[0064] In the case that the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 are communicated through the branch channel provided with the branch piston, the pressure state of the second hydraulic cavity 41 of the second hydraulic cylinder 4 is determined according to the force area ratio of the two sides of the branch piston.

[0065] The plurality of branch channels are provided with control valves, and the control valves are used to control the communication or disconnection state of the branch channel.

[0066] In the embodiment, the control valve is arranged in each of the plurality of branch channels, so that each branch channel can be controlled to be connected or disconnected. By selecting the control valves of different branch channels to be opened, the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be communicated through different branch channels, so that the second hydraulic cavity 41 of the second hydraulic cylinder 4 is in different pressure states, thereby forming different pedal feelings and pedal strokes.

[0067] According to the pedal device provided by the embodiment of the application, the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 are connected through a plurality of branch channels. Since the pressure transmitted to the second hydraulic cavity 41 of the second hydraulic cylinder 4 through at least two of the plurality of branch channels is different, by selecting the control valves of different branch channels to be opened, the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be communicated through different branch channels, so that the pressure state of the second hydraulic cavity 41 of the second hydraulic cylinder 4 is changed, and different pedal feelings and pedal strokes are obtained, thereby increasing the use experience of the vehicle.

[0068] The plurality of branch channels at least include the following two design modes.

[0069] In the case that at least one of the branch channels is not provided with a branch piston, the force areas of the two sides of at least part of the branch piston are different.

[0070] For example, referring to Figure 1 The plurality of branch channels include a first branch channel 5, a second branch channel 6 and a third branch channel 7. The first branch channel 5 is not provided with a branch piston. The second branch channel 6 is provided with a second branch piston 61. The third branch channel 7 is provided with a third branch piston 73. The force area ratio of the two sides of the second branch piston 61 and the third branch piston 73 is different and is not 1.

[0071] By controlling the control valves on the first branch passage 5, the second branch passage 6 and the third branch passage 7, the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be switched among three pressure states, thereby obtaining three different pedal feelings and pedal strokes.

[0072] For example, the plurality of branch passages include the first branch passage 5 and the second branch passage 6; the first branch passage 5 is not provided with a branch piston; and the second branch passage 6 is provided with a second branch piston 61, and the force area ratio of the two sides of the second branch piston 61 is not 1.

[0073] By controlling the control valves on the first branch passage 5 and the second branch passage 6, the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be switched among two pressure states, thereby obtaining two different pedal feelings and pedal strokes.

[0074] Secondly, in the case that each branch passage is provided with a branch piston, the force area ratio of the two sides of at least two branch pistons is different.

[0075] For example, the plurality of branch passages include the second branch passage 6 and the third branch passage 7; the second branch passage 6 is provided with a second branch piston 61; the third branch passage 7 is provided with a third branch piston 73; and the force area ratio of the two sides of the second branch piston 61 and the third branch piston 73 is different.

[0076] By controlling the control valves on the second branch passage 6 and the third branch passage 7, the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be switched among two pressure states, thereby obtaining two different pedal feelings and pedal strokes.

[0077] The force area ratio of the two sides of the second branch piston 61 and the third branch piston 73 can be different and not 1; or the force area ratio of the two sides of one of the second branch piston 61 and the third branch piston 73 can be 1, and the force area ratio of the two sides of the other of the second branch piston 61 and the third branch piston 73 can not be 1.

[0078] For example, the plurality of branch passages include the second branch passage 6, the third branch passage 7 and a redundant branch passage; the second branch passage 6 is provided with a second branch piston 61; the third branch passage 7 is provided with a third branch piston 73; and the redundant branch passage is provided with a redundant branch piston; wherein the force area ratio of the two sides of the second branch piston 61 and the third branch piston 73 is different, and the force area ratio of the two sides of the redundant branch piston and the second branch piston 61 or the third branch piston 73 is the same.

[0079] By controlling the control valves on the second branch passage 6 and the third branch passage 7, the second hydraulic chamber 41 of the second hydraulic cylinder 4 can be switched between two pressure states, thereby obtaining two different pedal feelings and pedal strokes; in the case of failure of the control valves on the second branch passage 6 or the third branch passage 7, the control valves on the corresponding redundant branch passages can be controlled to still switch the second hydraulic chamber 41 of the second hydraulic cylinder 4 between two pressure states, thereby obtaining two different pedal feelings and pedal strokes.

[0080] In the present embodiment, in the case of blockage of one of the branch passages or damage of the control valve, the redundant branch passage can be activated for backup use, thereby increasing the use reliability.

[0081] According to some embodiments of the present application, with reference to Figure 1 and Figure 2 , the branch passage with the branch piston comprises a first section 71 and a second section 72 connected in series, the first section 71 is connected to the first hydraulic chamber 31, and the second section 72 is connected to the second hydraulic chamber 41; the branch piston comprises a first part 731 and a second part 732, the first part 731 is movably arranged in the first section 71, and at least part of the second part 732 is adapted to be movably arranged in the second section 72.

[0082] The cross-sectional area of the first part 731 is adapted to the flow area of the first section 71, and the cross-sectional area of the second part 732 is adapted to the flow area of the second section 72, and the flow areas of the first section 71 and the second section 72 are different to adapt the first part 731 and the second part 732 with different cross-sectional areas.

[0083] The first part 731 can reciprocate in the length direction of the branch passage within the first section 71, and the second part 732 can reciprocate in the length direction of the branch passage within the first section 71 and the second section 72.

[0084] By setting different cross-sectional areas of the first part 731 and the second part 732, the force receiving area on both sides of the branch piston can be made not equal to 1, so that the pressure in the first section 71 and the second section 72 is different, and then the pressure in the first hydraulic chamber 31 of the first hydraulic cylinder 3 and the second hydraulic chamber 41 of the second hydraulic cylinder 4 is different.

[0085] According to some embodiments of the present application, the flow areas in the branch passages without branch pistons can be the same or different, and in the case that the control valves on the branch passages without branch pistons are open, the first hydraulic chamber 31 of the first hydraulic cylinder 3 and the second hydraulic chamber 41 of the second hydraulic cylinder 4 are in communication, and the pressure states in the first hydraulic chamber 31 of the first hydraulic cylinder 3 and the second hydraulic chamber 41 of the second hydraulic cylinder 4 are the same.

[0086] According to some embodiments of the present application, the flow areas of the second sections 72 corresponding to different branch channels are different.

[0087] In the present embodiment, the branch channels provided with branch pistons need to be provided with channel sections with different flow areas to adapt to the different cross-sectional areas on both sides of the branch pistons.

[0088] In the case where the flow areas of the first sections 71 corresponding to different branch channels are the same, the flow areas of the second sections 72 corresponding to the branch channels provided with branch pistons are different, that is, the force area ratios on both sides of the plurality of branch pistons are different, so that the second hydraulic chamber 41 of the second hydraulic cylinder 4 has different pressure states.

[0089] In the case where the flow areas of the first sections 71 corresponding to different branch channels are different, the flow areas of the second sections 72 corresponding to the branch channels provided with branch pistons are different, and the force area ratios on both sides of the plurality of branch pistons can be the same or different.

[0090] According to some embodiments of the present application, the flow areas of the first sections 71 corresponding to different branch channels are the same, which can reduce the production difficulty.

[0091] According to some embodiments of the present application, with reference to Figure 2 , the first part 731 is provided with a flow channel 733, and the flow channel 733 is open at both ends of the first part 731 along the length direction of the branch channel; and the outer peripheral wall of the second part 732 is provided with a sealing element 734 in dynamic sealing connection with the inner peripheral wall of the second section 72.

[0092] The flow channel 733 is in communication with both sides of the first part 731, and since the liquid compression ratio is small, the branch pistons can move smoothly in the first section 71 by setting the flow channel 733.

[0093] The outer peripheral wall of the second part 732 is in dynamic sealing connection with the inner peripheral wall of the second section 72, which can reduce the risk of liquid backflow leakage on both sides of the branch pistons in the branch channel and reduce the pressure loss ratio transmitted by the pistons.

[0094] The sealing element 734 can be a rubber sealing ring or a silica gel sealing ring.

[0095] According to some embodiments of the present application, with reference to Figure 2 , the first part 731 is provided with a flow channel 733, and the flow channel 733 is open at both ends of the first part 731 along the length direction of the branch channel.

[0096] The flow channel 733 is in communication with both sides of the first part 731, and since the liquid compression ratio is small, the branch pistons can move smoothly in the first section 71 by setting the flow channel 733.

[0097] According to some embodiments of the present application, referring to Figure 2 A seal 734 is arranged between the outer peripheral wall of the second portion 732 and the inner peripheral wall of the second section 72.

[0098] The dynamic sealing connection between the outer peripheral wall of the second portion 732 and the inner peripheral wall of the second section 72 can reduce the risk of liquid backflow leakage on both sides of the branch piston in the branch channel, and reduce the pressure loss ratio transmitted by the piston.

[0099] According to some embodiments of the present application, the length of the second portion 732 along the length direction of the branch channel is not less than the length of the first portion 731 along the length direction of the branch channel.

[0100] The length of the second portion 732 along the length direction of the branch channel is equal to or greater than the length of the first portion 731 along the length direction of the branch channel.

[0101] In this embodiment, by setting the length of the second portion 732 along the length direction of the branch channel, the second portion 732 can be kept in dynamic sealing with the second section 72 during the reciprocating movement of the branch piston along the branch channel, thereby reducing the failure of the branch piston.

[0102] According to some embodiments of the present application, referring to Figure 1 The first hydraulic cylinder 3 comprises a first cylinder body 33, a first piston 34, and a first elastic member 35 elastically mounted between the first piston 34 and the first cylinder body 33; and the second hydraulic cylinder 4 comprises a second cylinder body 42, a second piston 43, and a second elastic member 44 elastically mounted between the second piston 43 and the second cylinder body 42.

[0103] The elastic coefficients of the first elastic member 35 and the second elastic member 44 are different, and the first elastic member 35 and the second elastic member 44 will produce different deformation amounts when subjected to the same force (such as hydraulic pressure).

[0104] The elastic coefficients of the first elastic member 35 and the second elastic member 44 are set according to the actual use scene.

[0105] The cross-sectional areas of the first cylinder body 33 and the second cylinder body 42 are different, thereby combining the elastic coefficients of the first elastic member 35 and the second elastic member 44 to obtain different pedal feelings and pedal strokes.

[0106] The cross-sectional areas of the first cylinder body 33 and the second cylinder body 42 are set according to the actual use scene.

[0107] According to some embodiments of the present application, the pedal device further comprises an input module and a controller.

[0108] The input module is used to receive user input.

[0109] The input module includes, but is not limited to, a touch-sensitive surface (for example, a touch screen display and / or a touchpad), a physical button, or a control lever.

[0110] The controller is electrically connected with the control valve and the input module, and is configured to control the control valve based on the input information received by the input module.

[0111] In the embodiment, the user can input to the input module to select different pedal feeling modes, and the controller controls the control valve on the target branch channel in the plurality of branch channels to be opened.

[0112] In the embodiment, the input module, the controller, and the control valve are all common mechanical parts in the art, and the electrical connection between the input module, the controller, and the control valve is also a common technology in the art, which is not the improvement point of the present application, and is omitted here.

[0113] According to some embodiments of the present application, the present application also provides a vehicle comprising the pedal device according to any one of the above embodiments.

[0114] According to the vehicle provided by the embodiments of the present application, by arranging the pedal device according to any one of the above embodiments, the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 are connected through the plurality of branch channels, and since the pressure transmittable to the second hydraulic cavity 41 of the second hydraulic cylinder 4 of at least two branch channels of the plurality of branch channels is different, by selecting the control valve of different branch channels to be opened, the first hydraulic cavity 31 of the first hydraulic cylinder 3 and the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be connected through different branch channels, so as to change the pressure state of the second hydraulic cavity 41 of the second hydraulic cylinder 4, and further obtain different pedal feelings and pedal strokes, and increase the use experience of the vehicle.

[0115] According to some embodiments of the present application, the present application also provides a pedal simulator comprising the pedal device according to any one of the above embodiments.

[0116] The pedal simulator of the present application can be applied in a vehicle laboratory to perform pedal feeling tests in the laboratory, so as to select different pedal feelings for different vehicle models.

[0117] According to some embodiments of the present application, with reference to Figure 1 and Figure 2 the present application provides a pedal device, which comprises a pedal, a first hydraulic cylinder 3, and a second hydraulic cylinder 4.

[0118] The pedal can include a pedal support 1 and a pedal arm 2 connected in sequence, the pedal arm 2 is connected with the piston rod 32 of the first hydraulic cylinder 3, and the pedal arm 2 can transmit the force of the pedal to the piston rod 32 of the first hydraulic cylinder 3. The piston rod 32 of the first hydraulic cylinder 3 is connected with the pedal. The first hydraulic cavity 31 of the first hydraulic cylinder 3 is connected with the second hydraulic cavity 41 of the second hydraulic cylinder 4 through a plurality of branch channels. Each branch channel of the plurality of branch channels is provided with a control valve to make the second hydraulic cavity 41 of the second hydraulic cylinder 4 in different pressure states.

[0119] The plurality of branch channels include a first branch channel 5, a second branch channel 6 and a third branch channel 7; the first branch channel 5 is not provided with a branch piston; the second branch channel 6 is provided with a second branch piston 61; the third branch channel 7 is provided with a third branch piston 73; wherein the force area ratio of the second branch piston 61 and the third branch piston 73 on both sides is different and not equal to 1.

[0120] By controlling the control valves on the first branch channel 5, the second branch channel 6 and the third branch channel 7, the second hydraulic cavity 41 of the second hydraulic cylinder 4 can be switched among three pressure states, thereby obtaining three different pedal feelings and pedal strokes.

[0121] In actual use, the pedal arm 2 is connected with the piston rod 32 of the first hydraulic cylinder 3, the piston rod 32 directly acts on the first piston 34 of the first hydraulic cylinder 3, and the first hydraulic cylinder 3 has a first spring.

[0122] The first hydraulic cavity 31 of the first hydraulic cylinder 3 is connected with the second hydraulic cavity 41 of the second hydraulic cylinder 4 through a plurality of branch channels, each branch channel has a branch piston matched therewith, and the second piston 43 of the second hydraulic cylinder 4 is moved by the pressure of different branch channels to compress the second spring of the second hydraulic cylinder 4.

[0123] Specific principle: the pedal force F1 of the driver acting on the pedal support 1 is transmitted to the first piston 34 of the first hydraulic cylinder 3 through the pedal arm 2 and the piston rod 32 of the first hydraulic cylinder 3, and the force F2 acting on the first piston 34 is F2, which pushes the first piston 34, and the pressure in the first piston 34 is P1. At this time, the user selects the pedal feeling style 2, the second control valve 62 is opened, and the first control valve 51 and the third control valve 74 are in the closed state, so P1 acts on the second branch piston 61, according to F=PS, the pressure in the second section 72 of the second branch channel 6 is P2, so the pressure acting on the second piston 43 of the second hydraulic cylinder 4 is also P2, and the force acting on the second piston 43 of the second hydraulic cylinder 4 is F3 according to the same principle, F3 pushes the second piston 43 of the second hydraulic cylinder 4 to move. According to the spring force analysis: F3=KL, wherein K is the spring stiffness, and L is the stroke. At this time, the elastic compression stroke is L1.

[0124] Similarly, the third control valve 74 is opened, the first control valve 51 and the second control valve 62 are closed, the force acting on the second piston 43 of the second hydraulic cylinder 4 is F4, and the second spring compression stroke is L2 at this time.

[0125] Similarly, the first control valve 51 is opened, the second control valve 62 and the third control valve 74 are closed, the force acting on the second piston 43 of the second hydraulic cylinder 4 is F5, and the second spring compression stroke is L3 at this time.

[0126] According to the above, it is concluded that the same pedal input force F1 can obtain different pedal strokes by selecting different branch channels.

[0127] If not specifically stated, all embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions.

[0128] If not specifically stated, all technical features and optional technical features of the present application can be combined with each other to form new technical solutions.

[0129] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pedal device characterized by comprising: The pedal device comprises: a pedal; a first hydraulic cylinder, a piston rod of which is connected with the pedal; a second hydraulic cylinder, a first hydraulic cavity of the first hydraulic cylinder is connected with a second hydraulic cavity of the second hydraulic cylinder through a plurality of branch channels; wherein, at least part of the plurality of branch channels is provided with a branch piston, and each of the plurality of branch channels is provided with a control valve to enable the second hydraulic cavity to be in different pressure states.

2. The pedal device according to claim 1, wherein, in the case that each of the branch channels is provided with the branch piston, the force receiving areas on both sides of at least two of the branch pistons are different; in the case that at least one of the branch channels is not provided with the branch piston, the force receiving areas on both sides of at least part of the branch pistons are different.

3. The pedal device of claim 2, wherein The plurality of branch channels comprises: a first branch channel, which is not provided with the branch piston; a second branch channel, which is provided with a second branch piston; a third branch channel, which is provided with a third branch piston; wherein, the force receiving areas on both sides of the second branch piston and the third branch piston are different and are not equal to 1.

4. Pedal arrangement according to any of claims 1-3, characterized in that The branch channel provided with the branch piston comprises a first section and a second section connected with each other, the first section is connected with the first hydraulic cavity, the second section is connected with the second hydraulic cavity, and the flow areas of the first section and the second section are different; the branch piston comprises a first part and a second part, the first part is movably arranged in the first section, and at least part of the second part is movably arranged in the second section.

5. The pedal device of claim 4, wherein The flow areas of the second sections corresponding to different branch channels are different.

6. A pedal device according to claim 4 or 5, characterised in that, The flow areas of the first sections corresponding to different branch channels are the same.

7. Pedal arrangement according to any of claims 4-6, characterized in that The first part is provided with a flow channel, the flow channel is open at both ends of the first part along the length direction of the branch channel; and / or, a sealing element is arranged between the outer peripheral wall of the second part and the inner peripheral wall of the second section.

8. Pedal arrangement according to any of claims 4-7, characterized in that The length of the second part along the length direction of the branch channel is not less than the length of the first part along the length direction of the branch channel.

9. The pedal device according to any one of claims 1-8, characterized in that, The first hydraulic cylinder comprises a first cylinder body, a first piston, and a first elastic element elastically arranged between the first piston and the first cylinder body; The second hydraulic cylinder comprises a second cylinder body, a second piston, and a second elastic element elastically arranged between the second piston and the second cylinder body; The elastic coefficients of the first elastic element and the second elastic element are different.

10. The pedal device of claim 9, wherein The cross-sectional areas of the first cylinder body and the second cylinder body are different.

11. The pedal device according to any one of claims 1-10, wherein, Further comprising: an input module for receiving user input; a controller electrically connected with the control valve and the input module, configured to control the control valve based on the input information received by the input module.

12. A vehicle characterized by comprising: The pedal device comprises the pedal device according to any one of claims 1-11.

13. A pedal simulator characterized by, The pedal device comprises the pedal device according to any one of claims 1-11.

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