Emergency braking device, hydraulic braking system and vehicle

Abstract

The invention provides an emergency braking device, a hydraulic braking system and a vehicle, and relates to the technical field of vehicles, the emergency braking device comprises a body, a first sliding block, a second sliding block and a manual control assembly; the body is provided with a first oil duct, a sliding cavity and a second oil duct which are sequentially communicated, the first oil duct is used for communicating with a brake, and the second oil duct is used for communicating with a hydraulic control part; the first sliding block and the second sliding block are installed in the sliding cavity in a sliding mode, an oil cavity is defined between the first sliding block and the second sliding block, the first sliding block is provided with a first channel and a second channel, and the second sliding block is used for sliding along the sliding cavity so as to push the first sliding block to be switched from the first position to the second position through brake oil in the oil cavity. Brake oil in the oil cavity is extruded to the first oil channel through the second channel; the manual control assembly is arranged on the body, connected with the second sliding block and used for driving the second sliding block to slide relative to the sliding cavity. The emergency braking device can improve the safety performance of the vehicle and reduce the cost of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an emergency braking device, a hydraulic braking system and a vehicle. Background Art

[0002] The hydraulic brake system is one of the important components of a vehicle, which mainly uses hydraulic pressure to brake the vehicle. With the continuous improvement of the level of autonomous driving, more and more vehicles are equipped with electronically controlled hydraulic brake systems. The electronic control unit of the electronically controlled hydraulic brake system can send instructions to the hydraulic control components in the brake oil circuit according to the preset program to control the hydraulic control components to adjust the brake oil in the brake oil circuit, thereby achieving braking.

[0003] However, when the electronic control unit of the electronic hydraulic brake system fails, such as due to a hacker attack or power outage, the vehicle may be unable to brake in an emergency, thus affecting the vehicle's safety performance. Summary of the invention

[0004] The problem solved by the present invention is: how to improve the safety performance of a vehicle.

[0005] In order to solve the above problems, the present invention provides an emergency brake device, a hydraulic brake system and a vehicle.

[0006] In a first aspect, the present invention provides an emergency brake device, comprising a body, a first slider, a second slider and a manual control assembly; the body is provided with a first oil passage, a sliding chamber and a second oil passage which are connected in sequence, the first oil passage is used to connect the brake, and the second oil passage is used to connect the hydraulic control component; the first slider and the second slider are respectively slidably installed in the sliding chamber and define an oil chamber therebetween, the first slider is provided with a first channel and a second channel, the first slider is used to slide along the sliding chamber to switch between a first position and a second position, when in the first position, the first channel is respectively connected to the first oil passage and the second oil passage, when in the second position, the second channel is respectively connected to the first oil passage and the oil chamber, the second slider is used to slide along the sliding chamber to push the first slider to switch from the first position to the second position through the brake oil in the oil chamber, and when the first slider is in the second position, the brake oil in the oil chamber is squeezed toward the first oil passage through the second channel; the manual control assembly is provided on the body and connected to the second slider, and is used to drive the second slider to slide relative to the sliding chamber.

[0007] Optionally, a return spring is further included, which is arranged in the sliding cavity and located at an end of the first sliding block away from the second sliding block, and is used to push the first sliding block to switch from the second position to the first position.

[0008] Optionally, the cavity wall surface of the sliding cavity is recessed to form a limiting groove, and the limiting groove includes a first groove wall and a second groove wall which are arranged opposite to each other along the sliding direction of the first sliding block;

[0009] The side wall of the first slider is provided with a limiting protrusion, and the limiting protrusion is inserted into the limiting groove. When the first slider is in the first position, the limiting protrusion abuts against the first groove wall, and when the first slider is in the second position, the limiting protrusion abuts against the second groove wall.

[0010] Optionally, the extending direction of the sliding cavity is arranged to be perpendicular and cross-articulated with the extending direction of the first oil passage and the extending direction of the second oil passage respectively;

[0011] One end of the first channel passes through the side wall of the first slider facing the first oil channel, and the other end passes through the side wall of the first slider facing the second oil channel;

[0012] The second channel is located on a side of the first channel close to the second slider, one end of the second channel passes through a side wall of the first slider facing the first oil passage, and the other end passes through a side wall of the first slider facing the second slider.

[0013] Optionally, a first sealing ring is provided between the side wall of the first sliding block and the cavity wall of the sliding cavity; and / or,

[0014] A second sealing ring is provided between the side wall of the second sliding block and the cavity wall of the sliding cavity.

[0015] Optionally, the manual control assembly includes a lifting rod and a pressure block, the middle part of the lifting rod is hinged to the main body, one end of the pressure block is movably connected to one end of the lifting rod, and the other end is movably connected to the second slider, and the lifting rod is used to rotate relative to its central hinge axis to drive the second slider to slide through the pressure block.

[0016] Optionally, one end of the pressing block is hinged to the lifting rod, and the other end of the pressing block is slidably connected to the second sliding block, and the sliding direction is perpendicular to the middle hinge axis.

[0017] Optionally, a limit card plate is provided on the body, a through hole parallel to the middle hinge axis is provided on the lifting rod, and the hand control assembly further comprises a limit pin passing through the through hole, and the limit pin is used to rotate relative to the through hole to lock with the limit card plate or unlock with the limit card plate;

[0018] The manual control assembly also includes a push rod and a locking spring. The push rod is inserted into the lifting rod along the axial direction of the lifting rod and is used to drive the limit pin shaft to rotate from the locked state to the unlocked state. The locking spring is arranged in the lifting rod and is used to drive the limit pin shaft to rotate from the unlocked state to the locked state.

[0019] In a second aspect, the present invention provides a hydraulic braking system, comprising a brake, a hydraulic control component, an electronic control unit and the emergency braking device as described above, wherein the brake is connected to a first oil channel of the emergency braking device through a first brake oil circuit, the hydraulic control component is connected to a second oil channel of the emergency braking device through a second brake oil circuit, and the electronic control unit is electrically connected to the hydraulic control component.

[0020] In a third aspect, the present invention provides a vehicle comprising the hydraulic brake system as described above.

[0021] The beneficial effects of the emergency brake device of the present invention are as follows: when the first slider is in the first position, its first channel is connected to the first oil channel and the second oil channel respectively, and the hydraulic control component can smoothly provide brake oil to the brake under the control of the electronic control unit to realize electronic control; and when the electronic control unit fails, the manual control assembly can be manually operated to drive the second slider to slide relative to the sliding cavity, and the brake oil in the oil cavity can be used to push the first slider from the first position to the second position, and when the first slider is in the second position, the brake oil in the oil cavity can be squeezed to the first oil channel through the second channel to provide brake oil for the brake to realize manual emergency braking, so that the emergency brake device can realize manual braking under electronic control failure, avoid the situation that emergency braking cannot be performed when electronic control fails, and improve the safety performance of the vehicle. In addition, the first oil channel is connected to the brake, and the second oil channel is connected to the hydraulic control component, so that the emergency brake device can share part of the oil circuit with the original hydraulic brake system, and there is no need to add a manual brake system with a complete oil circuit, which is conducive to simplifying the layout of the brake system and reducing the cost of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an emergency brake device according to an embodiment of the present invention;

[0023] Figure 2 It is a cross-sectional view of the emergency brake device along the oil passage and the channel according to an embodiment of the present invention;

[0024] Figure 3 It is a cross-sectional view of the emergency brake device along the limiting groove according to an embodiment of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a first sliding block according to an embodiment of the present invention;

[0026] Figure 5This is a schematic diagram of the explosion structure of the emergency brake device according to an embodiment of the present invention;

[0027] Figure 6 It is a schematic structural diagram of a second sliding block and a pressing block according to an embodiment of the present invention;

[0028] Figure 7 for Figure 1 An enlarged schematic diagram of a part A of the emergency brake device;

[0029] Figure 8 This is a schematic diagram of the structure of a limit pin shaft according to an embodiment of the present invention;

[0030] Fig. 9 for Figure 3 An enlarged schematic diagram of part B of the emergency brake device.

[0031] Description of reference numerals:

[0032] 1. Main body; 11. First oil passage; 12. Sliding cavity; 121. Limiting groove; 1211. First groove wall; 1212. Second groove wall; 13. Second oil passage; 14. Oil cavity; 15. Articulated seat; 151. Limiting card plate; 1511. Card groove; 2. First slider; 21. First passage; 22. Second passage; 23. Limiting convex part; 24. First sealing ring; 25. Return spring; 3. Second slider; 31. Second sealing ring; 32. Sliding Groove; 321, anti-slip groove; 4, manual control assembly; 41, lifting rod; 411, through hole; 412, first connecting part; 42, pressure block; 421, sliding part; 4211, anti-slip convex part; 43, rotating pin; 44, limiting pin; 441, latching tooth; 442, second connecting part; 45, push rod; 451, unlocking button; 46, locking spring; 5, brake; 51, first brake oil circuit; 6, hydraulic control component; 61, second brake oil circuit. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0034] The Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the drawings represents the left and right position, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0036] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0037] The present invention provides an emergency brake device, a hydraulic brake system and a vehicle to improve the safety performance of the vehicle. Detailed description will be given below in conjunction with specific embodiments.

[0038] like Figure 1 and Figure 2As shown, an emergency brake device provided by the present invention comprises a body 1, a first slider 2, a second slider 3 and a hand control assembly 4; the body 1 is provided with a first oil passage 11, a sliding cavity 12 and a second oil passage 13 which are connected in sequence, the first oil passage 11 is used to connect with the brake 5, and the second oil passage 13 is used to connect with the hydraulic control member 6; the first slider 2 and the second slider 3 are respectively slidably installed in the sliding cavity 12 and define an oil cavity 14 therebetween, the first slider 2 is provided with a first channel 21 and a second channel 22, the first slider 2 is used to slide along the sliding cavity 12 to switch between a first position and a second position, and when in the first position, the first The channel 21 is connected to the first oil channel 11 and the second oil channel 13 respectively. When in the second position, the second channel 22 is connected to the first oil channel 11 and the oil chamber 14 respectively. The second slider 3 is used to slide along the sliding chamber 12 to push the first slider 2 to switch from the first position to the second position through the brake oil in the oil chamber 14, and when the first slider 2 is in the second position, the brake oil in the oil chamber 14 is squeezed toward the first oil channel 11 through the second channel 22; the manual control assembly 4 is arranged on the main body 1 and connected to the second slider 3, and is used to drive the second slider 3 to slide relative to the sliding chamber 12.

[0039] It should be noted that the present invention does not limit the specific number of the first oil channel 11, the second oil channel 13, the first channel 21 and the second channel 22, but preferably the number of the four is the same, which can be one, two, three or four. For example, in the present embodiment, the number of the first oil channel 11, the second oil channel 13, the first channel 21 and the second channel 22 is four, so that the internal space of the body 1 can be fully utilized to ensure the flow of brake oil. It should also be noted that the present invention does not limit the specific diameter of the first oil channel 11, the second oil channel 13, the first channel 21 and the second channel 22, but the diameters of the four should be consistent to ensure that there is no height change at the connection when the oil channel and the channel are aligned, so as to ensure the smooth flow of brake oil.

[0040] The working process of the emergency brake device is as follows: when the electronic control unit is not failed, the first slider 2 can be placed in the first position. At this time, the first channel 21 is connected to the first oil channel 11 and the second oil channel 13 respectively, and the electronic control unit can control the hydraulic control component 6 to smoothly provide brake oil to the brake 5 to achieve braking; when the electronic control unit fails, the second slider 3 can be driven to slide, and the brake oil in the oil chamber 14 can be used to push the first slider 2 from the first position to the second position. At this time, the second channel 22 is connected to the first oil channel 11 and the oil chamber 14 respectively, and then the second slider continues to slide while the first slider 2 is stationary in the second position. The volume of the oil chamber 14 between the second slider 3 and the first slider 2 will gradually decrease, so that the brake oil in the oil chamber 14 is squeezed to the first oil channel 11 through the second channel 22, and brake oil is provided to the brake 5, thereby achieving braking.

[0041] In this embodiment, when the first slider 2 is in the first position, its first channel 21 is connected to the first oil channel 11 and the second oil channel 13 respectively, and the hydraulic control component 6 can smoothly provide brake oil to the brake 5 under the control of the electronic control unit to realize electronic control; and when the electronic control unit fails, the manual control assembly 4 can be manually operated to drive the second slider 3 to slide relative to the sliding cavity 12, and the brake oil in the oil cavity 14 can be used to push the first slider 2 from the first position to the second position, and when the first slider 2 is in the second position, the brake oil in the oil cavity 14 can be squeezed to the first oil channel 11 through the second channel 22, and brake oil is provided to the brake 5 to realize artificial emergency braking, so that the emergency braking device can realize manual braking under electronic control failure, avoid the situation that emergency braking cannot be performed when the electronic control fails, and improve the safety performance of the vehicle. Furthermore, the first oil passage 11 is connected to the brake 5, and the second oil passage 13 is connected to the hydraulic control component 6, so that the emergency braking device can share part of the oil circuit with the original hydraulic braking system, without adding a manual braking system with a complete oil circuit, which is conducive to simplifying the layout of the braking system and reducing the cost of the vehicle.

[0042] Alternatively, if Figure 2 As shown, the extension direction of the sliding cavity 12 is perpendicularly intersected with the extension direction of the first oil channel 11 and the extension direction of the second oil channel 13 respectively; one end of the first channel 21 passes through the side wall of the first slider 2 facing the first oil channel 11, and the other end passes through the side wall of the first slider 2 facing the second oil channel 13; the second channel 22 is located on the side of the first channel 21 close to the second slider 3, one end of the second channel 22 passes through the side wall of the first slider 2 facing the first oil channel 11, and the other end passes through the side wall of the first slider 2 facing the second slider 3.

[0043] Specifically, the axis of the first oil channel 11 and the axis of the second oil channel 13 can be coaxial, and then the first channel 21 in the sliding cavity 12 is set as a linear channel, so that the first oil channel 11 and the second oil channel 13 can be connected, so that the processing process of the first channel 21 is relatively simple, and the axis of the first oil channel 11, the axis of the second oil channel 13 and the first channel 21 are all linear channels and are coaxially arranged, which can minimize the obstruction to the oil and avoid affecting the flow rate of the oil. The extension direction of the sliding cavity 12 is perpendicularly intersected with the extension direction of the first oil channel 11 and the extension direction of the second oil channel 13, respectively, so that the first slider 2 slides along the sliding cavity 12 to block or conduct the first oil channel 11 and the second oil channel 13.

[0044] Specifically, both ends of the first channel 21 may penetrate the side wall of the first slider 2 to form openings, respectively, and the openings at both ends of the first channel 21 are used to connect the first oil channel 11 and the second oil channel 13, respectively; both ends of the second channel 22 may penetrate the side wall of the first slider 2 to form openings, respectively, and the openings at both ends of the second channel 22 are used to connect the first oil channel 11 and the oil chamber 14, respectively. Figure 2 In the illustrated embodiment, the two ends of the first channel 21 respectively penetrate the front side wall (towards the positive direction of the X-axis) and the rear side wall (towards the negative direction of the X-axis) of the first slider 2, and the two ends of the second channel 22 respectively penetrate the upper side wall (towards the positive direction of the Z-axis) and the front side wall (towards the positive direction of the X-axis) of the first slider 2.

[0045] In this optional embodiment, the first channel 21 and the second channel 22 are respectively arranged to pass through the first slider 2, so that the connection and disconnection between the channel and the oil channel can be controlled by changing the position of the first slider 2, thereby effectively controlling the flow path of the brake oil, and enabling the hydraulic brake system to switch between electric control braking and manual braking, so as to cope with different vehicle conditions and improve safety and driving experience.

[0046] Optionally, the emergency braking device further includes a return spring 25, which is disposed in the sliding cavity 12 and located at an end of the first slider 2 away from the second slider 3, and is used to push the first slider 2 to switch from the second position to the first position.

[0047] It should be noted that the present invention does not limit the specific number of the return springs 25 , which may be one, two, or three. For example, in this embodiment, the number of the return springs 25 is two.

[0048] In this optional embodiment, the return spring 25 can drive the first slider 2 to switch from the second position to the first position, so that after the manual control assembly 4 performs an action, the return spring 25 can reset the first slider 2 from the second position to the first position under the action of its own elastic restoring force, ensuring that the first slider 2 can automatically return to its position, thereby enhancing the reliability of the emergency braking device.

[0049] Alternatively, if Figure 3 and Figure 4 As shown, the cavity wall surface of the sliding cavity 12 is recessed to form a limiting groove 121, and the limiting groove 121 includes a first groove wall 1211 and a second groove wall 1212 which are relatively arranged along the sliding direction of the first slider 2; the side wall of the first slider 2 is provided with a limiting protrusion 23, and the limiting protrusion 23 is inserted into the limiting groove 121, when the first slider 2 is in the first position, the limiting protrusion 23 abuts against the first groove wall 1211, and when the first slider 2 is in the second position, the limiting protrusion 23 abuts against the second groove wall 1212.

[0050] In this optional embodiment, the limiting protrusion 23 can abut against the first groove wall 1211 when the first slider 2 is in the first position, thereby limiting the first slider 2 to the first position, ensuring that the first channel 21 is aligned with the first oil channel 11 and the second oil channel 13, avoiding the increase of flow resistance of the brake oil due to steps caused by misalignment, and affecting the braking effect when the electronic control is normal; the limiting protrusion 23 can also abut against the second groove wall 1212 when the first slider 2 is in the second position, thereby limiting the first slider 2 to the second position, ensuring that the second channel 22 is aligned with the first oil channel 11, avoiding the increase of flow resistance of the brake oil due to steps caused by misalignment, and affecting the braking effect during manual emergency braking.

[0051] Alternatively, if Figure 3 As shown, a first sealing ring 24 is provided between the side wall of the first slider 2 and the cavity wall of the sliding cavity 12 ; and / or a second sealing ring 31 is provided between the side wall of the second slider 3 and the cavity wall of the sliding cavity 12 .

[0052] It should be noted that the first sealing ring 24 and the second sealing ring 31 can be provided at the same time, or one of them can be provided selectively. Of course, the effect is best when the first sealing ring 24 and the second sealing ring 31 are provided at the same time. It should also be noted that the present invention does not impose any specific restrictions on the specific number of the first sealing ring 24 and the second sealing ring 31. Specifically, in this embodiment, two first sealing rings 24 are provided, and the two first sealing rings 24 are respectively provided on the side walls of the first slider 2, one of which is close to the upper end of the first slider 2, and the other first sealing ring 24 is close to the lower end of the first slider 2, so that a better sealing effect can be provided. It should also be noted that the present invention does not impose any restrictions on the specific installation method of the first sealing ring 24, for example, the first sealing ring 24 can be embedded in the side wall of the first slider 2. It should also be noted that the present invention does not impose any restrictions on the specific installation method of the second sealing ring 31, for example, the second sealing ring 31 can be embedded in the side wall of the second slider 3.

[0053] In this optional embodiment, the first sealing ring 24 and / or the second sealing ring 31 can effectively prevent the brake oil from flowing between the side wall of the slider and the cavity wall of the sliding cavity 12, prevent the brake oil from leaking, and ensure that the emergency braking device maintains the required working oil pressure.

[0054] Alternatively, if Figure 1 and Figure 5 As shown, the manual control assembly 4 includes a lifting rod 41 and a pressure block 42. The middle part of the lifting rod 41 is hinged to the main body 1. One end of the pressure block 42 is movably connected to one end of the lifting rod 41, and the other end is movably connected to the second slider 3. The lifting rod 41 is used to rotate relative to the central hinge axis so as to drive the second slider 3 to slide through the pressure block 42.

[0055] The lifting rod 41 is equivalent to a lever. When the lifting rod 41 rotates around the hinge point in the middle, the pressing block 42 moves along an arc track with one end of the lifting rod 41, while the movement track of the second slider 3 is a straight line. Therefore, an active connection method is required between the pressing block 42 and the second slider 3. There is no limitation on the specific active connection method, which can be a hinge connection or a sliding connection, and a sliding connection is preferred. Compared with a hinge connection, a sliding connection has a simpler structure and is more conducive to reducing the difficulty of assembling the device.

[0056] Specifically, one end of the sliding cavity 12 along its extension direction penetrates the body 1 to form an opening, and the second sliding block 3 is connected to the pressing block 42 through the opening.

[0057] In this optional embodiment, when the electronic control unit fails and manual emergency braking is required, the end of the lifting rod 41 where the pressure block 42 is not located can be lifted, and the lifting rod 41 can then rotate relative to its central hinge axis, thereby driving the end of the lifting rod 41 where the pressure block 42 is located to fall, allowing the pressure block 42 to move along with it, thereby driving the second slider 3 to slide, and ultimately achieving manual emergency braking, thereby ensuring the safety of the vehicle.

[0058] Alternatively, if Figure 5 and Figure 6 As shown, one end of the pressing block 42 is hinged to the lifting rod 41, and the other end of the pressing block 42 is slidably connected to the second sliding block 3, and the sliding direction is perpendicular to the middle hinge axis.

[0059] It should be noted that there is no restriction on the specific implementation method of the sliding connection between the pressing block 42 and the second slider 3. For example, the pressing block 42 is provided with a sliding portion 421, the length direction of the sliding portion 421 is perpendicular to the middle hinge axis, the second slider 3 is provided with a sliding groove 32, the length direction of the sliding groove 32 is perpendicular to the middle hinge axis, the sliding portion 421 and the sliding groove 32 are slidably matched, that is, the sliding connection between the pressing block 42 and the second slider 3 is realized. More preferably, the side wall of the sliding portion 421 is formed with an anti-slip convex portion 4211, and the groove side wall of the sliding groove 32 is recessed to form an anti-slip groove 321 that is concave-convexly matched with the anti-slip convex portion 4211. The concave-convex matching of the two can effectively limit the separation of the sliding groove 32 and the sliding portion 421, and ensure that the pressing block 42 is stably connected to the second slider 3. It should be noted that one end of the pressing block 42 can be hinged to the lifting rod 41 through a rotating pin 43.

[0060] In an optional embodiment, by hingedly connecting the pressure block 42 to the lifting rod 41 and slidably connecting the pressure block 42 to the second slider 3, when one end of the lifting rod 41 is lifted, the pressure block 42 and the second slider 3 can be driven to slide relative to each other, thereby driving the second slider 3 to slide smoothly along the sliding cavity. Compared with the active connection method in which both ends of the pressure block 42 are fully hinged, this embodiment adopts a method in which one end is hinged and the other end is slidably connected, which has a simpler structure and is more conducive to reducing the difficulty of assembling the device.

[0061] Alternatively, if Figure 1 and Figure 5As shown, a limit card plate 151 is provided on the main body 1, and a through hole 411 parallel to the middle hinge axis is provided on the lifting rod 41. The manual control assembly 4 also includes a limit pin 44 passing through the through hole 411, and the limit pin 44 is used to rotate relative to the through hole 411 to lock with the limit card plate 151 or unlock with the limit card plate 151; the manual control assembly 4 also includes a push rod 45 and a locking spring 46, and the push rod 45 is inserted into the lifting rod 41 along the axial direction of the lifting rod 41, and is used to drive the limit pin 44 to rotate from the locked state to the unlocked state, and the locking spring 46 is arranged in the lifting rod 41, and is used to drive the limit pin 44 to rotate from the unlocked state to the locked state.

[0062] It should be noted that a hinge seat 15 can be provided on the body 1, a rotating pin 43 is installed on the hinge seat 15, the middle part of the lifting rod 41 is hinged to the hinge seat 15 through the rotating pin 43, the rotating pin 43 is the middle hinge shaft, and the limit clamping plate 151 can be installed on the hinge seat 15. It should also be noted that an unlocking button 451 can be provided at the end of the push rod 45 away from the limit pin 44, so that the push rod 45 can be pushed by pressing the unlocking button 451, thereby driving the limit pin 44 to rotate from the locked state to the unlocked state, which is more conducive to manual operation.

[0063] It should be noted that if Figure 7 and Figure 8 As shown, the end of the limiting pin 44 can be provided with a latch tooth 441, and the limiting clamping plate 151 can be set as an arc-shaped plate, the center of the arc-shaped edge of the arc-shaped plate is on the axis of the limiting pin 44, and the arc-shaped edge of the arc-shaped plate is formed with a plurality of latch grooves 1511 arranged in sequence along the arc-shaped edge. Therefore, if the latch tooth 441 is inserted into one of the latch grooves 1511, the limiting pin 44 and the limiting clamping plate 151 can be locked, that is, the limiting pin 44 is in a locked state. If the latch tooth 441 is disengaged from the latch groove 1511, The limit pin 44 and the limit clamping plate 151 can be unlocked, that is, the limit pin 44 is in the unlocked state. Correspondingly, when the lifting rod 41 is not lifted, the locking tooth 441 can be inserted into one of the slots 1511 to put the limit pin 44 in the locked state, thereby locking the lifting rod 41 in the non-lifted state. After the lifting rod 41 is lifted, the locking tooth 441 can be inserted into another slot 1511 to put the limit pin 44 in the locked state again, thereby locking the lifting rod 41 in the lifted state.

[0064] It should be noted that if Figure 8 and Fig. 9As shown, the inner cavity wall of the lifting rod 41 can be provided with a first connecting portion 412, and the surrounding wall of the limiting pin shaft 44 can be provided with a second connecting portion 442, and the two ends of the locking spring 46 are respectively connected to the first connecting portion 412 and the second connecting portion 442, and the push rod 45 is abutted against the second connecting portion 442. In this way, when the push rod 45 is pushed, the push rod 45 can drive the limiting pin shaft 44 to rotate from the locked state to the unlocked state through the second connecting portion 442 and compress the locking spring 46 through the second connecting portion 442. When the push rod 45 is released, the locking spring 46 will elastically recover, and then drive the limiting pin shaft 44 to rotate from the unlocked state to the locked state through the second connecting portion 442.

[0065] In this optional embodiment, when manual emergency braking is required, the push rod 45 can be pushed first to drive the limit pin 44 to rotate from the locked state to the unlocked state through the push rod 45, so that the limit pin 44 and the limit card plate 151 are unlocked. At this time, the limit pin 44 has no limiting effect on the lifting rod 41, and the lifting rod 41 can be lifted to drive the second slider 3 to slide, thereby realizing manual emergency braking; and when the manual emergency braking is completed and the vehicle stops, the push rod 45 can be released. At this time, the locking spring 46 can switch the limit pin 44 from the unlocked state to the locked state through its own elastic restoring force, so that the limit pin 44 and the limit card plate 151 are locked. At this time, under the limiting action of the limit pin 44, the lifting rod 41 cannot rotate, that is, the manual emergency brake will remain in the braking state, that is, the vehicle will remain in the braking state, thereby preventing the vehicle from slipping and improving safety.

[0066] like Figure 2 As shown, a hydraulic braking system provided by the present invention includes a brake 5, a hydraulic control component 6, an electronic control unit and the emergency braking device as described above, wherein the brake 5 is connected to the first oil channel 11 of the emergency braking device through a first brake oil circuit 51, the hydraulic control component 6 is connected to the second oil channel 13 of the emergency braking device through a second brake oil circuit 61, and the electronic control unit is electrically connected to the hydraulic control component 6.

[0067] It should be noted that the specific composition of the electronic control unit is not limited, for example, it may include a processor and a controller, etc., which are responsible for signal processing and brake control, etc. It should be noted that the specific implementation of the hydraulic control element 6 is also not limited, for example, it may be a hydraulic pump, a solenoid valve, an accumulator, etc.

[0068] In this embodiment, the brake 5 is connected to the first oil channel 11 of the emergency brake device through the first brake oil circuit 51, the hydraulic control component 6 is connected to the second oil channel 13 of the emergency brake device through the second brake oil circuit 61, and the electronic control unit is electrically connected to the hydraulic control component 6. Therefore, when the electronic control unit is not invalid, the electronic control unit can transmit a signal to the hydraulic control component 6 to control the hydraulic control component 6 to provide brake oil to the brake 5 through the second brake oil circuit 61, the emergency brake device and the first brake oil circuit 51 to achieve braking, thereby realizing a normal electronic control braking function. When the electronic control unit fails, the emergency brake device can provide brake oil to the brake 5 through the first brake oil circuit 51 under manual operation to achieve braking, thereby realizing a manual emergency braking function, so that the hydraulic brake system has both electronic control braking function and manual emergency braking function to cope with different vehicle conditions and improve safety and driving experience.

[0069] The present invention provides a vehicle, comprising the hydraulic brake system as described above.

[0070] In this embodiment, since the vehicle includes the above-mentioned hydraulic brake system, it has all the beneficial effects brought by all the embodiments of the above-mentioned hydraulic brake system, which will not be described one by one here.

[0071] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. An emergency brake device, characterized in that: The invention comprises a body (1), a first slider (2), a second slider (3) and a manual control assembly (4); the body (1) is provided with a first oil passage (11), a sliding cavity (12) and a second oil passage (13) which are connected in sequence, the first oil passage (11) is used to connect with a brake (5), and the second oil passage (13) is used to connect with a hydraulic control component (6); the first slider (2) and the second slider (3) are respectively slidably mounted in the sliding cavity (12) and define an oil cavity (14) therebetween, the first slider (2) is provided with a first passage (21) and a second passage (22), the first slider (2) is used to slide along the sliding cavity (12) to switch between a first position and a second position, and when in the first position, the first passage (21) is The first oil passage (11) and the second oil passage (13) are respectively connected. When in the second position, the second passage (22) is respectively connected to the first oil passage (11) and the oil chamber (14). The second slider (3) is used to slide along the sliding chamber (12) so as to push the first slider (2) to switch from the first position to the second position through the brake oil in the oil chamber (14). When the first slider (2) is in the second position, the brake oil in the oil chamber (14) is squeezed toward the first oil passage (11) through the second passage (22). The manual control assembly (4) is arranged on the body (1) and connected to the second slider (3) so as to drive the second slider (3) to slide relative to the sliding chamber (12).

2. The emergency brake device according to claim 1, characterized in that: It also includes a return spring (25), which is arranged in the sliding cavity (12) and located at an end of the first sliding block (2) away from the second sliding block (3), and is used to push the first sliding block (2) to switch from the second position to the first position.

3. The emergency brake device according to claim 1, characterized in that: The cavity wall surface of the sliding cavity (12) is concave to form a limiting groove (121), and the limiting groove (121) comprises a first groove wall (1211) and a second groove wall (1212) which are arranged opposite to each other along the sliding direction of the first sliding block (2); The side wall of the first sliding block (2) is provided with a limiting protrusion (23), and the limiting protrusion (23) is inserted into the limiting groove (121). When the first sliding block (2) is in the first position, the limiting protrusion (23) abuts against the first groove wall (1211); when the first sliding block (2) is in the second position, the limiting protrusion (23) abuts against the second groove wall (1212).

4. The emergency brake device according to claim 1, characterized in that: The extending direction of the sliding chamber (12) is arranged to be perpendicular and cross-articulated with the extending direction of the first oil passage (11) and the extending direction of the second oil passage (13); One end of the first channel (21) passes through the side wall of the first slider (2) facing the first oil channel (11), and the other end passes through the side wall of the first slider (2) facing the second oil channel (13); The second channel (22) is located on a side of the first channel (21) close to the second slider (3); one end of the second channel (22) passes through a side wall of the first slider (2) facing the first oil passage (11), and the other end passes through a side wall of the first slider (2) facing the second slider (3).

5. The emergency brake device according to claim 1, characterized in that: A first sealing ring (24) is provided between the side wall of the first sliding block (2) and the cavity wall of the sliding cavity (12); and / or, A second sealing ring (31) is provided between the side wall of the second sliding block (3) and the cavity wall of the sliding cavity (12).

6. The emergency brake device according to claim 1, characterized in that: The manual control assembly (4) includes a lifting rod (41) and a pressure block (42), wherein the middle portion of the lifting rod (41) is hinged to the main body (1), one end of the pressure block (42) is movably connected to one end of the lifting rod (41), and the other end is movably connected to the second slider (3), and the lifting rod (41) is used to rotate relative to its central hinge axis to drive the second slider (3) to slide through the pressure block (42).

7. The emergency brake device according to claim 6, characterized in that: One end of the pressing block (42) is hinged to the lifting rod (41), and the other end of the pressing block (42) is slidably connected to the second sliding block (3), and the sliding direction is perpendicular to the middle hinge axis.

8. The emergency brake device according to claim 6, characterized in that: The body (1) is provided with a limit card plate (151), the lifting rod (41) is provided with a through hole (411) parallel to the middle hinge axis, and the hand control assembly (4) also includes a limit pin (44) passing through the through hole (411), and the limit pin (44) is used to rotate relative to the through hole (411) to lock with the limit card plate (151) or unlock with the limit card plate (151); The manual control assembly (4) also includes a push rod (45) and a locking spring (46). The push rod (45) is inserted into the lifting rod (41) along the axial direction of the lifting rod (41) and is used to drive the limit pin (44) to rotate from the locked state to the unlocked state. The locking spring (46) is arranged in the lifting rod (41) and is used to drive the limit pin (44) to rotate from the unlocked state to the locked state.

9. A hydraulic brake system, characterized in that: The invention comprises a brake (5), a hydraulic control component (6), an electronic control unit and an emergency braking device as claimed in any one of claims 1 to 8, wherein the brake (5) is connected to a first oil channel (11) of the emergency braking device via a first brake oil circuit (51), the hydraulic control component (6) is connected to a second oil channel (13) of the emergency braking device via a second brake oil circuit (61), and the electronic control unit is electrically connected to the hydraulic control component (6).

10. A vehicle, characterized in that: Comprising the hydraulic brake system as claimed in claim 9.

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