An emergency braking device, hydraulic braking system and vehicle

Abstract

The application 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 passage, a sliding cavity and a second oil passage which are sequentially communicated.The first oil passage is used for connecting a brake, and the second oil passage is used for connecting a hydraulic control component.The first sliding block and the second sliding block are slidably installed in the sliding cavity and define an oil cavity between them.The first sliding block is provided with a first channel and a second channel.The second sliding block is used for sliding along the sliding cavity so as to switch the first sliding block from a first position to a second position by brake oil in the oil cavity, and when the first sliding block is in the second position, the brake oil in the oil cavity is extruded to the first oil passage through the second channel.The manual control assembly is arranged on the body and connected with the second sliding block, and is 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 a crucial component of a vehicle, primarily utilizing hydraulic pressure to brake the vehicle. As autonomous driving levels continue to improve, more and more vehicles are being equipped with electronically controlled hydraulic brake systems. These systems' electronic control units (ECUs) send commands to hydraulic control components in the brake oil circuit according to pre-set procedures. These control components then adjust the brake fluid in the 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 the first aspect, the present invention provides an emergency brake device, comprising a main body, a first slider, a second slider and a manual control assembly; the main 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 an oil chamber is defined 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 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 main body and connected to the second slider, for driving 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 slider away from the second slider, and is used to push the first slider to switch from the second position to the first position.

[0008] Optionally, a cavity wall surface of the sliding cavity is recessed to form a limiting groove, the limiting groove comprising a first groove wall and a second groove wall oppositely arranged along a sliding direction of the first slider;

[0009] A limiting protrusion is arranged on a side wall of the first slider, 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 perpendicularly crossed with the extending direction of the first oil channel and the extending direction of the second oil channel;

[0011] One end of the first channel penetrates a side wall of the first slider facing the first oil channel, and the other end penetrates a 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 penetrates a side wall of the first slider facing the first oil channel, and the other end penetrates a side wall of the first slider facing the second slider.

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

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

[0015] Optionally, the hand control assembly comprises a lifting rod and a pressing block, a middle part of the lifting rod is hingedly connected to the body, one end of the pressing block is movably connected to one end of the lifting rod, and the other end is movably connected to the second slider, the lifting rod is used for rotating relative to the middle hinged shaft to drive the second slider to slide through the pressing block.

[0016] Optionally, one end of the pressing block is hingedly connected to the lifting rod, and the other end of the pressing block is movably connected to the second slider, and the sliding direction is perpendicular to the middle hinged shaft.

[0017] Optionally, a limiting clamping plate is arranged on the body, a through hole parallel to the middle hinged shaft is arranged on the lifting rod, and the hand control assembly further comprises a limiting pin shaft penetrating through the through hole, the limiting pin shaft is used for rotating relative to the through hole to be locked with the limiting clamping plate or to be unlocked with the limiting clamping 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 emergency brake device of the present invention has the following beneficial effects: when the first slider is in the first position, its first channel connects to the first oil channel and the second oil channel, respectively, allowing the hydraulic control component to smoothly supply brake oil to the brake under the control of the electronic control unit, thereby achieving electronic control. 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 chamber, using the brake oil in the oil chamber to push the first slider from the first position to the second position. When the first slider is in the second position, the brake oil in the oil chamber can be squeezed into the first oil channel through the second channel, thereby supplying brake oil to the brake and achieving manual emergency braking. This allows the emergency brake device to achieve manual braking in the event of electronic control failure, avoiding the situation where emergency braking cannot be performed in the event of electronic control failure, thereby improving vehicle safety. Furthermore, because the first oil channel connects to the brake and the second oil channel connects to the hydraulic control component, the emergency brake device can share a portion of the oil circuit with the existing hydraulic brake system, eliminating the need for a separate manual brake system with a complete oil circuit. This simplifies the layout of the brake system and reduces vehicle costs. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0024] Figure 3 This 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 This 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 This 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 structural diagram of a limit pin shaft according to an embodiment of the present invention;

[0030] Figure 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 plate; 1511. Slot; 2. First slider; 21. First passage; 22. Second passage; 23. Limiting protrusion; 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 protrusion; 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] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to 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 construed as being limited to the embodiments described herein. Instead, 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 for illustrative purposes only 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, i.e. the up-down position, and the positive direction of the Z axis represents the upward direction and the negative direction of the Z axis represents the downward direction; the X axis in the drawings represents the horizontal direction and is designated as the front-rear position, and the positive direction of the X axis represents the front side and the negative direction of the X axis represents the rear side; and the Y axis in the drawings represents the left-right position, and the positive direction of the Y axis represents the left side and the negative direction of the Y axis represents the right side. It should be noted that the above-mentioned meanings of the Z axis, the Y axis and the X axis are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements 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 application.

[0035] The term "comprising" and variations thereof as used herein are open-ended, and mean "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 additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optional" means "optional in at least some embodiments". Related definitions are given throughout the description. It should be noted that the concepts mentioned in the present application are illustrative rather than restrictive, and those skilled in the art should understand that "one" "multiple" modification is illustrative rather than restrictive, and those skilled in the art should understand that "one" or "multiple" should be understood as "one or more" unless otherwise explicitly indicated in the context.

[0036] It should be noted that the "one" "multiple" modification mentioned in the present application is illustrative rather than restrictive, and those skilled in the art should understand that "one" or "multiple" should be understood as "one or more" unless otherwise explicitly indicated in the context.

[0037] The present application provides an emergency braking device, a hydraulic braking system and a vehicle to improve the safety performance of the vehicle. The specific embodiments are described in detail below.

[0038] As Figure 1 and Figure 2As shown, an emergency brake device provided by the present invention includes 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 to the brake 5, and the second oil passage 13 is used to connect to the hydraulic control component 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 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 provided 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 impose any restrictions on the specific number of the first oil channel 11, the second oil channel 13, the first channel 21, and the second channel 22. However, the four channels are preferably the same in number, and can be one, two, three, or four. For example, in this embodiment, the first oil channel 11, the second oil channel 13, the first channel 21, and the second channel 22 are all four in number. This fully utilizes the internal space of the body 1 and ensures the flow rate of the brake oil. It should also be noted that the present invention does not impose any restrictions on the specific diameters of the first oil channel 11, the second oil channel 13, the first channel 21, and the second channel 22. However, the four channels must be of the same diameter to ensure that there is no height difference at the connection when the oil channels are aligned, thereby ensuring smooth flow of the brake oil.

[0040] The working process of this emergency braking 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. 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. 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 is 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 manual emergency braking, so that the emergency braking device can realize manual braking under electronic control failure, avoid the situation where emergency braking cannot be performed when the electronic control fails, and improve the safety performance of the vehicle. In addition, the first oil channel 11 is connected to the brake 5, and the second oil channel 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 the need to add 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, as 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; 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 the first channel 21 in the sliding cavity 12 is a straight channel, so that the first oil channel 11 and the second oil channel 13 are communicated, the machining 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 straight channels and coaxial, which can reduce the resistance to the oil as much as possible and avoid affecting the oil flow rate. The extension direction of the sliding cavity 12 is perpendicular to the extension direction of the first oil channel 11 and the extension direction of the second oil channel 13, so that the first oil channel 11 and the second oil channel 13 are blocked or conducted by sliding the first slider 2 along the sliding cavity 12.

[0044] Specifically, the two ends of the first channel 21 can penetrate the side wall of the first slider 2 to form openings, respectively, and the two end openings of the first channel 21 are used to communicate the first oil channel 11 and the second oil channel 13, respectively; the two ends of the second channel 22 can penetrate the side wall of the first slider 2 to form openings, respectively, and the two end openings of the second channel 22 are used to communicate the first oil channel 11 and the oil cavity 14, respectively. Specifically, in the embodiment shown, Figure 2 Specifically, the two ends of the first channel 21 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, respectively, and the two ends of the second channel 22 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, respectively.

[0045] In the alternative embodiment, by penetrating the first channel 21 and the second channel 22 through the first slider 2, the on-off between the channels and the oil channels can be controlled by changing the position of the first slider 2, so as to effectively control the brake oil flow path, switch the hydraulic brake system between the electric brake and the manual brake, cope with different vehicle conditions, and improve safety and driving experience.

[0046] Optionally, the emergency brake device further comprises a reset spring 25, which is arranged in the sliding cavity 12 and located at one 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 specific number of reset springs 25 is not limited in the present application, which can be one, two or three, for example, in the embodiment, the number of reset springs 25 is two.

[0048] In the alternative embodiment, the reset spring 25 can drive the first slider 2 to switch from the second position to the first position, so that after the manual assembly 4 performs an action, the reset spring 25 can reset the first slider 2 from the second position to the first position under the action of its elastic restoring force, ensuring that the first slider 2 can automatically return to the original position and enhancing the use reliability of the emergency brake device.

[0049] Optionally, as shown in Figure 3 and Figure 4 , the cavity wall surface of the sliding cavity 12 is recessed to form a limiting groove 121, the limiting groove 121 includes a first groove wall 1211 and a second groove wall 1212 oppositely 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, 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 the alternative 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 in the first position, ensuring that the first channel 21 is aligned with the first oil passage 11 and the second oil passage 13, avoiding the increase of the flow resistance of the brake oil due to the step caused by misalignment, and affecting the brake effect in the normal control of the electric control; 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 in the second position, ensuring that the second channel 22 is aligned with the first oil passage 11, avoiding the increase of the flow resistance of the brake oil due to the step caused by misalignment, and affecting the brake effect in the manual emergency brake.

[0051] Optionally, as shown in Figure 3 , a first sealing ring 24 is arranged 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 arranged 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 set simultaneously or alternatively, and of course, the first sealing ring 24 and the second sealing ring 31 are set simultaneously, which is the best effect. It should be noted that the specific number of the first sealing ring 24 and the second sealing ring 31 is not limited in the present application, and specifically in the present embodiment, two first sealing rings 24 are provided, and the two first sealing rings 24 are arranged on the side wall of the first sliding block 2, one of the first sealing rings 24 is close to the upper end of the first sliding block 2, and the other first sealing ring 24 is close to the lower end of the first sliding block 2, which can provide better sealing effect. It should be noted that the specific mounting mode of the first sealing ring 24 is not limited in the present application, for example, the first sealing ring 24 can be embedded in the side wall of the first sliding block 2. It should be noted that the specific mounting mode of the second sealing ring 31 is also not limited in the present application, for example, the second sealing ring 31 can be embedded in the side wall of the second sliding block 3.

[0053] In the 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 sliding block and the cavity wall of the sliding cavity 12, prevent the brake oil from leaking, and ensure that the emergency brake device maintains the required working oil pressure.

[0054] Optionally, as shown in Figure 1 and Figure 5 , the hand control assembly 4 comprises a lifting rod 41 and a pressing block 42, the middle part of the lifting rod 41 is hinged to the body 1, one end of the pressing block 42 is movably connected with one end of the lifting rod 41, and the other end is movably connected with the second sliding block 3, and the lifting rod 41 is used for rotating relative to the hinged shaft in the middle part to drive the second sliding block 3 to slide through the pressing block 42.

[0055] Among them, the lifting rod 41 corresponds to a lever, when the lifting rod 41 rotates around the hinged point in the middle, the pressing block 42 moves along the circular arc trajectory with one end of the lifting rod 41, and the movement trajectory of the second sliding block 3 is a straight line, therefore, the pressing block 42 and the second sliding block 3 need to be movably connected. The specific movable connection mode is not limited, which can be hinged or slidingly connected, and the sliding connection is preferred, which is simpler in structure and more conducive to reducing the assembly difficulty of the device.

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

[0057] In the optional embodiment, when the electronic control unit fails and manual emergency braking is needed, the end of the lifting rod 41 where the non-pressing block 42 is located is lifted, the lifting rod 41 rotates relative to the middle hinge shaft, the end of the lifting rod 41 where the pressing block 42 is located falls, the pressing block 42 moves, the second sliding block 3 slides, and finally manual emergency braking is realized, thereby ensuring the safety of the vehicle.

[0058] Optionally, as shown in Figure 5 and Figure 6 , one end of the pressing block 42 is hinged to the lifting rod 41, and the other end of the pressing block 42 is slidingly connected to the second sliding block 3, and the sliding direction is perpendicular to the middle hinge shaft.

[0059] It should be noted that the specific implementation mode of the sliding connection between the pressing block 42 and the second sliding block 3 is not limited, for example, the sliding part 421 is arranged on the pressing block 42, the length direction of the sliding part 421 is perpendicular to the middle hinge shaft, the sliding groove 32 is arranged on the second sliding block 3, the length direction of the sliding groove 32 is perpendicular to the middle hinge shaft, the sliding part 421 and the sliding groove 32 are slidingly matched, that is, the pressing block 42 and the second sliding block 3 are slidingly connected, and more preferably, the side wall of the sliding part 421 is formed with an anti-disengagement convex part 4211, the groove side wall of the sliding groove 32 is recessed to form an anti-disengagement recess 321 matched with the anti-disengagement convex part 4211, and the two are matched in concave-convex, which can effectively limit the separation of the sliding groove 32 and the sliding part 421, and ensure the stable connection between the pressing block 42 and the second sliding block 3. It should be noted that one end of the pressing block 42 can be hinged to the lifting rod 41 through the rotating pin shaft 43.

[0060] In the optional embodiment, by hinging the pressing block 42 to the lifting rod 41 and slidingly connecting the pressing block 42 to the second sliding block 3, when the end of the lifting rod 41 is lifted, the pressing block 42 and the second sliding block 3 can be relatively slid, thereby driving the second sliding block 3 to smoothly slide along the sliding cavity. Compared with the full-hinged and movable connection mode of the two ends of the pressing block 42, the one-end-hinged and the other-end-sliding connection mode adopted in the embodiment is simpler in structure and more conducive to reducing the assembly difficulty of the device.

[0061] Optionally, as shown in 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 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 provided 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 main body 1, and a rotating pin 43 can be installed on the hinge seat 15. The middle part of the lifting rod 41 is hinged to the hinge seat 15 via the rotating pin 43. The rotating pin 43 is the middle hinge axis, 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 on the end of the push rod 45 away from the limit pin 44. In this way, by pressing the unlocking button 451, the push rod 45 can be pushed, thereby driving the limit pin 44 to rotate from the locked state to the unlocked state, which is more convenient for 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 edge of the arc plate is on the axis of the limiting pin 44, and the arc edge of the arc plate is formed with a plurality of latch grooves 1511 arranged in sequence along the arc edge. Therefore, if the latch tooth 441 is engaged in 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 Figure 9As shown, the inner cavity wall of the lifting rod 41 can be provided with a first connecting part 412, and the peripheral wall of the limiting pin 44 can be provided with a second connecting part 442, and the two ends of the locking spring 46 are respectively connected to the first connecting part 412 and the second connecting part 442, and the push rod 45 is in contact with the second connecting part 442. In this way, when the push rod 45 is pushed, the push rod 45 can drive the limiting pin 44 to rotate from the locked state to the unlocked state through the second connecting part 442 and compress the locking spring 46 through the second connecting part 442. When the push rod 45 is released, the locking spring 46 will elastically recover, and then drive the limiting pin 44 to rotate from the unlocked state to the locked state through the second connecting part 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 to achieve 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, the present invention provides a hydraulic braking system, including 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, and it may include, for example, a processor and a controller, etc., for signal processing and brake control, etc. It should be noted that the specific implementation of the hydraulic control component 6 is also not limited, and it may be, for example, 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 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 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 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 braking 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 the brake (5), and the second oil passage (13) is used to connect with the 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 separately 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) 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 passage (11) through the second passage (22); the manual control assembly (4) is provided on the 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).

2. The emergency brake device according to claim 1, characterized in that: The invention also includes a return spring (25), which is arranged 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.

3. The emergency brake device according to claim 1, characterized in that: The cavity wall surface of the sliding cavity (12) is recessed to form a limiting groove (121), and the limiting groove (121) comprises a first groove wall (1211) and a second groove wall (1212) arranged opposite to each other along the sliding direction of the first sliding block (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); when the first slider (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 cavity (12) is perpendicularly intersected 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 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).

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 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 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) further 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) further 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 brake device according to any one of claims 1 to 8, wherein the brake (5) is connected to a first oil channel (11) of the emergency brake device through a first brake oil circuit (51), the hydraulic control component (6) is connected to a second oil channel (13) of the emergency brake device through 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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