Jacking device, jacking device and vehicle

Abstract

The invention discloses a jacking device, a jacking device and a vehicle. The jacking device comprises a shell, a jacking assembly and a jacking assembly, the piston rod is movably arranged in the shell and divides the internal space of the shell into a first cavity and a second cavity; a medium source; and the control assembly is connected among the medium source, the first chamber and the second chamber so as to selectively control one of the first chamber and the second chamber to be communicated with the medium source. Therefore, through the arrangement of the control assembly, the first cavity and the second cavity can be selectively controlled to communicate with the medium source, so that the effect of driving the piston rod to move in a reciprocating manner is achieved, and then the purpose of repeatedly and circularly using the jacking device is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a jack, a jacking device and a vehicle. Background Art

[0002] Automobile safety systems can be divided into two major categories: active safety systems and passive safety systems. Generally speaking, active safety is to prevent accidents from occurring. Passive safety is a device that reduces injuries and protects the safety of ourselves and others after an accident occurs. With the rapid development of the automobile industry and the upcoming mandatory implementation of pedestrian protection regulations, pedestrian safety issues have received increasing attention. At present, the head of a pedestrian is mainly protected by weakening local areas of the engine hood, applying energy-absorbing materials and styling designs, etc. However, for problems such as insufficient engine compartment space and conflicts between engine compartment layout and regulatory requirements, the protection means based on passive safety can no longer meet the increasingly stringent safety requirements. The engine hood pop-up system has emerged as the times require.

[0003] In related technologies, the currently common engine hood pop-up system mainly consists of a pedestrian collision sensor, an actuator, and an airbag ECU (Electronic Control Unit). Its working principle is to control whether the engine hood pops up through the pressure change in the air pressure chamber. When we encounter a pedestrian during driving, the pedestrian collision sensor located behind the engine front bumper foam senses the pressure change in the air pressure chamber and sends relevant signals to the airbag ECU. After receiving the signals, the airbag ECU will automatically match the data originally stored in it. Then, it judges whether to detonate the pneumatic piston engine hood strut to pop up or judge it as a fault phenomenon according to this data. The engine hood pops up within a short time, and the engine hood forms an inclined plane to play a buffering role, so as to ensure that the pedestrian does not directly contact the hard parts under the vehicle engine hood, but has a certain deformation and buffering interval. At the same time, because there is a certain slope after the engine hood pops up, the risk of the dummy's head directly hitting the front windshield is reduced, and the pedestrian is prevented from being injured again after the collision. However, the currently common engine hood pop-up systems have deviations in the accurate recognition of signals, often mis-trigger due to signal recognition errors, and do not have the ability to automatically retract after popping up, and relevant components need to be replaced, so the maintenance cost is high. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a jack, which can selectively communicate a first chamber and a second chamber with a medium source through a control component, so as to drive a piston rod to move reciprocally.

[0005] The present invention further provides a jacking device.

[0006] The present invention further provides a vehicle.

[0007] The jack according to the first aspect of the present invention includes: a housing; a piston rod movably disposed in the housing and dividing the internal space of the housing into a first chamber and a second chamber; a medium source; and a control assembly connected between the medium source, the first chamber, and the second chamber to selectively control one of the first chamber and the second chamber to communicate with the medium source.

[0008] Thus, by providing the control assembly, it is possible to selectively control the first chamber and the second chamber to communicate with the medium source, thereby achieving the effect of driving the piston rod to move reciprocally, and further achieving the purpose of repeatedly recycling the jack.

[0009] In some examples of the present invention, the control assembly includes: a valve body having a first interface, a second interface, and a third interface, the first interface being connected to the first chamber, the second interface being connected to the second chamber, and the third interface being connected to the medium source; a valve core movably disposed in the valve body and selectively controlling one of the first interface and the second interface to communicate with the third interface.

[0010] In some examples of the present invention, the valve body further has a fourth interface and a fifth interface; the valve core has a first position, a second position, and a third position. When the valve core is in the first position, the first interface, the second interface, the third interface, the fourth interface, and the fifth interface are all disconnected; when the valve core is in the second position, the first interface communicates with the third interface, and the second interface communicates with the fifth interface; when the valve core is in the third position, the second interface communicates with the third interface, and the first interface communicates with the fourth interface.

[0011] In some examples of the present invention, the control assembly further includes: a first electromagnetic assembly disposed at one end of the valve body and magnetically cooperating with the valve core; a second electromagnetic assembly disposed at the other end of the valve body and magnetically cooperating with the valve core.

[0012] In some examples of the present invention, the housing is provided with a first elbow pipe and a second elbow pipe, the first elbow pipe communicating with the first chamber and the second elbow pipe communicating with the second chamber;

[0013] The control assembly further includes: a third elbow pipe and a fourth elbow pipe, the third elbow pipe communicating with the first interface and the first elbow pipe respectively, and the fourth elbow pipe communicating with the second interface and the second elbow pipe respectively.

[0014] In some examples of the present invention, the housing includes: an outer shell, in which the medium source and the control assembly are disposed; an inner shell, which is disposed inside the outer shell, and the piston rod is movably disposed inside the inner shell and divides the inner space of the inner shell into the first chamber and the second chamber.

[0015] In some examples of the present invention, a through hole is provided at the top of the outer shell, the piston rod passes through the through hole, and the medium source is disposed at the bottom of the outer shell; the control assembly is disposed on one side of the outer periphery of the inner shell.

[0016] The jacking device according to the second aspect of the present invention includes: the above-mentioned jack; a hinge, which includes: a first hinge arm, a second hinge arm, and a third hinge arm, the first hinge arm is rotatably connected to the second hinge arm, the second hinge arm is rotatably connected to the third hinge arm, the first hinge arm is used to connect to the vehicle body, the second hinge arm is in transmission connection with the piston rod, and the third hinge arm is used to connect to the engine hood; a locking device, which locks between the second hinge arm and the third hinge arm and selectively unlocks the third hinge arm from the second hinge arm.

[0017] In some examples of the present invention, the jacking device further includes: a tappet, one end of which is used to connect to the vehicle body and the other end is connected to the third hinge arm.

[0018] The vehicle according to the third aspect of the present invention includes: the above-mentioned jacking device.

[0019] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic structural view of a jacking device according to an embodiment of the present invention;

[0022] Figure 2 is another schematic structural view of a jacking device according to an embodiment of the present invention;

[0023] Figure 3 is a schematic structural view of a jack according to an embodiment of the present invention;

[0024] Figure 4 is a front view of a jack according to an embodiment of the present invention;

[0025] Figure 5Yes Figure 4 A sectional view taken along the A-A direction in

[0026] Figure 6 Yes Figure 5 An enlarged view of area B in

[0027] Figure 7 A schematic structural view of a lock according to an embodiment of the present invention;

[0028] Figure 8 An exploded view of the lock according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 100, jack; 200, jacking device;

[0031] 10, housing; 11, first chamber; 12, second chamber; 13, first elbow pipe;

[0032] 14, second elbow pipe; 15, outer shell; 151, through hole; 16, inner shell; 20, piston rod;

[0033] 30, medium source; 40, control assembly; 41, valve body; 411, first interface; 412, second interface;

[0034] 413, third interface; 414, fourth interface; 415, fifth interface; 42, valve core;

[0035] 43, third elbow pipe; 44, fourth elbow pipe; 210, hinge; 211, first hinge arm;

[0036] 212, second hinge arm; 213, third hinge arm; 220, lock; 221, mounting shell;

[0037] 222, locking pin; 223, magnetic part; 224, elastic part; 230, tappet. Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary.

[0039] Next, reference is made to Figures 1-8 Describe the jack 100 according to an embodiment of the present invention, which can selectively connect the first chamber 11 and the second chamber 12 to the medium source 30 through the control assembly 40, so as to achieve the effect of driving the piston rod 20 to move reciprocally.

[0040] In combination with Figures 1-8As shown, the jack 100 according to the embodiment of the first aspect of the present invention includes a housing 10, a piston rod 20, a medium source 30, and a control assembly 40. The housing 10 can protect its internal structure, and the housing 10 serves as a structural member outside the jack 100. The piston rod 20 can support the load. The medium source 30 is a medium source device that applies a driving pressure to the piston rod 20. The medium in the medium source 30 is a gas.

[0041] Specifically, the piston rod 20 is movably disposed in the housing 10, and the piston rod 20 divides the internal space of the housing 10 into a first chamber 11 and a second chamber 12. The control assembly 40 is connected between the medium source 30, the first chamber 11, and the second chamber 12 to selectively control one of the first chamber 11 and the second chamber 12 to communicate with the medium source 30.

[0042] Wherein, the piston rod 20 is axially movably disposed in the housing 10, and the piston rod 20 divides the internal space of the housing 10 into a first chamber 11 and a second chamber 12. The first chamber 11 communicates with the second chamber 12, and the first chamber 11 and the second chamber 12 change as the piston rod 20 moves (that is, there is no piston rod 20 in the first chamber 11, and there is a piston rod 20 in the second chamber 12).

[0043] One end of the control assembly 40 is connected to the medium source 30, and the other end of the control assembly 40 is connected to the first chamber 11 and the second chamber 12. The control assembly 40 can selectively control the medium source 30 to communicate with one of the first chamber 11 and the second chamber 12, so as to drive the piston rod 20 to move reciprocally, and further achieve the purpose of repeatedly recycling the jack 100.

[0044] For example, when the jack 100 needs to be jacked up, the control assembly 40 controls the medium source 30 to communicate with the first chamber 11. In this way, the medium in the medium source 30 gradually enters the first chamber 11, and the medium pressure in the first chamber 11 gradually increases to form a force that pushes the piston rod 20 upward to move. When the jack 100 needs to be retracted downward, the control assembly 40 controls the medium source 30 to communicate with the second chamber 12. In this way, the medium in the medium source 30 gradually enters the second chamber 12, and the medium pressure in the second chamber 12 gradually increases to form a downward squeezing force on the medium originally in the first chamber 11, so that the upward medium pressure on the piston rod 20 gradually decreases until it returns to the starting position under its own gravity. In this way, the piston rod 20 can achieve the effect of reciprocating movement.

[0045] Thus, by providing the control assembly 40, the communication between the first chamber 11 and the second chamber 12 with the medium source 30 can be selectively controlled, so as to achieve the effect of driving the piston rod 20 to reciprocate, and further achieve the purpose of repeatedly recycling the lifter 100.

[0046] According to some alternative embodiments of the present invention, in combination with Figure 5 and Figure 6 as shown, the control assembly 40 includes a valve body 41 and a valve core 42. The valve body 41 has a first interface 411, a second interface 412 and a third interface 413. The first interface 411 is connected to the first chamber 11, the second interface 412 is connected to the second chamber 12, and the third interface 413 is connected to the medium source 30. The valve core 42 is movably disposed within the valve body 41, and the valve core 42 selectively controls one of the first interface 411 and the second interface 412 to communicate with the third interface 413.

[0047] Specifically, in combination with Figure 5 and Figure 6 as shown, the first interface 411 and the second interface 412 on the valve body 41 are respectively in communication with the first chamber 11 and the second chamber 12, and the third interface 413 on the valve body 41 is in communication with the medium source 30. Thus, a complete communication channel can be provided for the control assembly 40 with the medium source 30, the first chamber 11 and the second chamber 12. The valve core 42 is movably disposed within the valve body 41 to selectively control one of the first interface 411 and the second interface 412 to communicate with the third interface 413. Thus, it is convenient for the control assembly 40 to achieve the effect of selectively communicating the medium source 30 and one of the first chamber 11 and the second chamber 12, thereby improving the rationality and scientificity of the control assembly 40.

[0048] Specifically, in combination with Figure 5 and Figure 6 as shown, the valve body 41 further has a fourth interface 414 and a fifth interface 415; the valve core 42 has a first position, a second position and a third position. When the valve core 42 is in the first position, the first interface 411, the second interface 412, the third interface 413, the fourth interface 414 and the fifth interface 415 are all disconnected; when the valve core 42 is in the second position, the first interface 411 is in communication with the third interface 413, and the second interface 412 is in communication with the fifth interface 415; when the valve core 42 is in the third position, the second interface 412 is in communication with the third interface 413, and the first interface 411 is in communication with the fourth interface 414.

[0049] Among them, the fourth interface 414 and the fifth interface 415 lead to the outside of the housing 10, the fourth interface 414 is selectively connected to the first interface 411, and the fifth interface 415 is selectively connected to the second interface 412. When the valve core 42 is in the first position, the first interface 411, the second interface 412, the third interface 413, the fourth interface 414 and the fifth interface 415 are disconnected respectively (that is, the first chamber 11 and the second chamber 12 do not form a medium passage with the medium source 30 or the outside of the housing 10), and the jacking device 100 is in a holding state (that is, the piston rod 20 is kept at a certain position).

[0050] When the valve core 42 is in the second position (at this time, the piston rod 20 is in an upwardly lifted and bounced state), the first interface 411 is connected to the third interface 413, and the fourth interface 414 is disconnected. In this way, the first chamber 11 is connected to the medium source 30, and the fourth interface 414 will not leak the medium source 30 at the first interface 411, thereby ensuring the pressure increase rate in the first chamber 11. At the same time, the second interface 412 is connected to the fifth interface 415, so that part of the medium between the piston rod 20 and the inner wall of the shell 10 (which can also be understood as the second chamber 12) can be slowly discharged along the passage formed by the second interface 412 and the fifth interface 415, thereby reducing the risk of deformation and explosion of the shell 10 caused by excessive pressure from the medium source 30.

[0051] When the valve core 42 is in the third position (at this time, the piston rod 20 is in a downward retracted state), the second interface 412 is connected to the third interface 413, and the fifth interface 415 is disconnected. In this way, the second chamber 12 is connected to the medium source 30, and the fifth interface 415 will not leak the medium source 30 at the second interface 412, thereby ensuring the pressure increase rate in the second chamber 12. At the same time, the first interface 411 is connected to the fourth interface 414, so that the medium in the first chamber 11 can be slowly discharged along the passage formed by the second interface 412 and the fourth interface 414, thereby preventing the problem of the jacking device 100 hitting the cabin cover due to excessive pressure relief.

[0052] Furthermore, the control assembly 40 further includes a first electromagnetic assembly and a second electromagnetic assembly, wherein the first electromagnetic assembly is disposed at one end of the valve body 41 and magnetically cooperates with the valve body 41, and the second electromagnetic assembly is disposed at the other end of the valve body 41 and magnetically cooperates with the valve body 41.

[0053] Among them, the first electromagnetic component and the second electromagnetic component are respectively arranged at both ends of the valve body 41, and the first electromagnetic component and the second electromagnetic component generate electromagnetic induction with the valve core 42 in the valve body 41 when energized, so that the valve body 41 can move under the action of the Lorentz force, thereby achieving the effect of selectively connecting and disconnecting the third interface 413 from the first interface 411 and the second interface 412, and further enabling the jack 100 to drive the piston rod 20 to achieve a reversible reciprocating motion effect.

[0054] For example, in one of the embodiments, the first electromagnetic component is arranged at one end close to the first interface 411, and the second electromagnetic component is arranged at one end close to the second interface 412. When the valve core 42 is in the first position (i.e., the piston rod 20 remains in a certain position), neither the first electromagnetic component nor the second electromagnetic component is energized, and at this time the valve core 42 does not move; when the valve core 42 is in the second position (at this time the piston rod 20 is in the state of being jacked up), the first electromagnetic component is energized, and at this time the valve core 42 moves in the direction of disconnecting the first interface 411 under the action of the Lorentz force; when the valve core 42 is in the third position (at this time the piston rod 20 is in the state of being retracted downward), the second electromagnetic component is energized, and at this time the valve core 42 moves in the direction of disconnecting the second interface 412 under the action of the Lorentz force. In this way, by selectively connecting the first interface 411 and the second interface 412 through the energization of the first electromagnetic component and the second electromagnetic component, the responsiveness of the piston rod 20 after being pressed can be improved in a timely and rapid manner, and further the reliability of the jack 100 can be improved.

[0055] Specifically, in combination with Figure 5 and Figure 6 As shown, the housing 10 is provided with a first elbow 13 and a second elbow 14. The first elbow 13 is communicated with the first chamber 11, and the second elbow 14 is communicated with the second chamber 12; the control assembly 40 further includes: a third elbow 43 and a fourth elbow 44. The third elbow 43 is respectively communicated with the first interface 411 and the first elbow 13, and the fourth elbow 44 is respectively communicated with the second interface 412 and the second elbow 14.

[0056] Among them, the first chamber 11, the first elbow 13 on the housing 10, the third elbow 43 on the control assembly 40, and the first interface 411 are connected in sequence, so as to provide a complete communication channel for the medium to flow from the first interface 411 to the first chamber 11; the second chamber 12, the second elbow 14 on the housing 10, the fourth elbow 44 on the control assembly 40, and the second interface 412 are connected in sequence, so as to provide a complete communication channel for the medium to flow from the second interface 412 to the second chamber 12, thereby improving the systematicness and integrity of the jack 100 to achieve the effect of medium circulation flow.

[0057] According to some alternative embodiments of the present invention, in combination withFigure 5 and Figure 6 As shown in Figure 6 , the housing 10 includes an outer housing 15 and an inner housing 16. The medium source 30 and the control assembly 40 are disposed in the outer housing 15. The inner housing 16 is disposed within the outer housing 15. The piston rod 20 is movably disposed in the inner housing 16, and the piston rod 20 divides the inner space of the inner housing 16 into a first chamber 11 and a second chamber 12.

[0058] Specifically, the outer housing 15 can protect the inner housing 16 and its internal structure, mainly preventing the internal structure from being damaged by external interference. Moreover, the outer housing 15 and the inner housing 16 can provide double protection for the piston rod 20. The piston rod 20 is axially movably disposed in the inner housing 16, so as to provide a good working environment for the piston rod 20, thereby improving the stability of the reciprocating motion of the piston rod 20. The piston rod 20 divides the inner space of the inner housing 16 into a first chamber 11 and a second chamber 12, which is conducive to space division.

[0059] Specifically, in combination with Figure 5 and Figure 6 As shown in Figure 6 , a through hole 151 is provided at the top of the outer housing 15. The piston rod 20 passes through the through hole 151. The medium source 30 is disposed at the bottom of the outer housing 15; the control assembly 40 is disposed on one side of the outer periphery of the inner housing 16.

[0060] Among them, the piston rod 20 passes through the through hole 151 at the top of the outer housing 15, so that the piston rod 20 can be connected to the structure outside the housing 10, thereby facilitating the piston rod 20 to perform the actions of jacking up and retracting the structure outside the housing. The outer housing 15 can protect the medium source 30 inside it, and disposing the medium source 30 at the bottom of the outer housing 15 can also avoid interfering with the normal movement of the piston rod 20, thereby improving the rationality of its layout. The control assembly 40 is disposed on one side of the outer periphery of the inner housing 16, so that the control assembly 40 can play a role in communicating between the medium source 30 and the inner housing 16 under the protection of the outer housing 15, thereby improving the rationality of its layout.

[0061] In combination with Figures 1-3 As shown in Figures 1-3 , the jacking device 200 according to the second aspect embodiment of the present invention includes the jacking device 100, the hinge 210 and the locking device 220 of the above embodiment. The hinge 210 includes: a first hinge arm 211, a second hinge arm 212 and a third hinge arm 213. The first hinge arm 211 is rotatably connected to the second hinge arm 212. The second hinge arm 212 is rotatably connected to the third hinge arm 213. The first hinge arm 211 is used for connecting to the vehicle body. The second hinge arm 212 is drivingly connected to the piston rod 20. The third hinge arm 213 is used for connecting to the engine hood. The locking device 220 locks between the second hinge arm 212 and the third hinge arm 213 and selectively unlocks the third hinge arm 213 from the second hinge arm 212.

[0062] Specifically, one end of the first hinge arm 211 is fixed to the vehicle body, one end of the third hinge arm 213 is fixed to the engine hood, both ends of the second hinge arm 212 are rotatably connected to the other end of the first hinge arm 211 and the other end of the third hinge arm 213 respectively, and the third hinge arm 213 is in transmission connection with the jack 100. In this way, the third hinge arm 213 can jack up the engine hood by a certain displacement amount under the driving force of the jack 100 (i.e., the limit position that the jack 100 can jack up or the limit position that the third hinge arm 213 can rotate upward relative to the second hinge arm 212), thereby realizing the bulging effect of the engine hood and avoiding the risk of pedestrians directly contacting the hard parts under the engine hood.

[0063] Furthermore, the lock 220 can selectively lock the second hinge arm 212 and the third hinge arm 213. When the lock 220 locks the second hinge arm 212 and the third hinge arm 213, the relative rotation between the second hinge arm 212 and the third hinge arm 213 is restricted at this time, so as to prevent accidental explosion of the third hinge arm 213; when the lock 220 does not lock the second hinge arm 212 and the third hinge arm 213, the second hinge arm 212 and the third hinge arm 213 can rotate relative to each other at this time, so as to facilitate the jacking up or lowering and retracting actions of the jacking device 200, thereby realizing the cyclic reuse effect of the jacking device 200, and further reducing the maintenance cost of the jacking device 200 while protecting pedestrian safety. In addition, the lock 220 can reduce the probability of accidental explosion of the jacking device 200, and can also assist in realizing the reuse effect of the jacking device 200, thereby improving the detonation accuracy and economy of the jacking device 200.

[0064] According to some alternative embodiments of the present invention, in combination with Figure 7 and Figure 8 as shown, the lock 220 includes a mounting shell 221, a locking pin 222, a magnetic member 223 and an electromagnetic coil. The locking pin 222 is axially movably arranged in the mounting shell 221, and the locking pin 222 locks between the second hinge arm 212 and the third hinge arm 213. The magnetic member 223 is arranged on the locking pin 222, and the electromagnetic coil is sleeved on the mounting shell 221, and the electromagnetic coil is magnetically induced with the magnetic member 223 in the energized state.

[0065] For example, when the lock 220 is in a locked state, the electromagnetic coil is not energized, and the lock pin 222 is locked between the second hinge arm 212 and the third hinge arm 213 in the axial direction; when the lock 220 receives an unlocking command signal, the electromagnetic coil is energized, and the magnetic member 223 moves along one side of the unlocking direction under the action of the magnetic force generated by the electromagnetic coil after being energized. In this way, the unlocking signal can be sent to the lock 220 in a timely and accurate manner through the control of the electrical signal, thereby reducing the probability of the second hinge arm 212 exploding by mistake, thereby protecting the safety of pedestrians and reducing the maintenance cost of the lifting device 200.

[0066] Specifically, combined with Figure 8 As shown in FIG. 1 , the lock 220 further includes an elastic member 224, which is disposed between the mounting shell 221 and the lock pin 222 to provide an elastic reset force to the lock pin 222. The elastic member 224 can be elastically deformed to generate an elastic reset force, and both ends of the elastic member 224 are respectively abutted between the mounting shell 221 and the lock pin 222. For example, when the lock 220 receives a locking command, the electromagnetic coil is powered off, the lock pin 222 is only subjected to the elastic restoring force from the elastic member 224, and the lock pin 222 moves toward the locking direction, so that the second hinge arm 212 and the third hinge arm 213 can be locked; when the lock 220 receives an unlocking command, the electromagnetic coil is powered on, the magnetic force on the lock pin 222 overcomes the elastic force from the elastic member 224, and the lock pin 222 moves toward the unlocking direction, so that the second hinge arm 212 and the third hinge arm 213 can be unlocked, thereby reasonably utilizing the elastic performance of the elastic member 224 to automatically lock the third hinge arm 213, thereby improving the scientificity and practicality of the lock 220.

[0067] In detail, compared with disposable lifting devices, the lifting device 200 in this case has an automatic pop-up mechanism that can respond quickly to reduce damage to pedestrians, thereby protecting pedestrian safety. After the collision risk is eliminated, it can be restored to its original position without the need to replace the lifting device 200, so that the lifting device 200 can be reused. This design not only ensures the safety of pedestrians during a collision, but also reduces the user's maintenance costs.

[0068] According to some optional embodiments of the present invention, the lifting device 200 further includes a push rod 230, one end of the push rod 230 is used to be connected to the vehicle body, and the other end of the push rod 230 is connected to the third hinge arm 213.

[0069] Specifically, the two ends of the push rod 230 are connected to the vehicle body and the third hinge arm 213 respectively, so that the push rod 230 can play an auxiliary supporting and buffering role for the third hinge arm 213, thereby further improving the supporting stability and reliability of the lifting device 200 for lifting the cabin cover. The push rod 230 can be a retractable pneumatic push rod 230, but is not limited thereto.​

[0070] The working process of the lifting device 200 is introduced as follows:

[0071] For example, the control component 40 can be a three-position five-way solenoid valve, and the medium source 30 is a high-pressure gas generating device. The vehicle also includes an active sensor and a controller. The active sensor is used to detect a collision risk signal. The controller is electrically connected to the active sensor, the locking device 220, and the lifter 100 to send an unlocking signal to the locking device 220 and a pressure relief and lifting signal to the lifter 100 when a collision risk is detected.

[0072] When the active sensor of the vehicle recognizes a collision risk signal, this signal is transmitted to the controllers on both sides inside the engine compartment. After being judged and processed by the controllers, the collision risk signal sends an instruction to drive the locking device 220 to work. The elastic member 224 in the locking device 220 is pressed back under force, driving the locking pin 222 to pull back. The locking device 220 unlocks the second hinge arm 212 and the third hinge arm 213; the valve body 41 inside the three-position five-way solenoid valve moves toward the first interface 411 side. At this time, the first interface 411 is connected to the third interface 413. The high-pressure gas in the medium source 30 enters the first chamber 11 through the control component 40. A small part of the gas in the second chamber 12 is discharged from the lifter 100 through the control component 40. At the same time, the high-pressure gas pushes the piston rod 20 out. The second hinge arm 212 is lifted by the piston rod 20. The second hinge arm 212 rotates counterclockwise around the connecting shaft at its connection with the first hinge arm 211, and drives the third hinge arm 213 to push the engine hood to move backward and upward in the clockwise direction.

[0073] After the lifting device 200 completes the lifting action, the valve body 41 inside the three-position five-way solenoid valve moves in the direction away from the first interface 411 and returns to the initial position and remains there. At this time, the engine hood remains in the popped-up position, thus minimizing the injury suffered by pedestrians after a collision and maximizing the protection of pedestrian safety.

[0074] When the collision danger is lifted, the valve body 41 inside the three-position five-way solenoid valve continues to move in the direction away from the first interface 411. The high-pressure gas in the medium source 30 enters the second chamber 12 through the control component 40. The gas in the first chamber 11 is discharged from the lifter 100 through the control component 40. At the same time, the high-pressure gas pushes the piston rod 20 back. The retraction of the piston rod 20 drives the second hinge arm 212 and the third hinge arm 213 to move to the original position. After the locking device 220 is powered off, the compressed spring inside it is released, driving the locking pin in the locking device 220 back to the original position. The locking device 220 locks the second hinge arm 212 and the third hinge arm 213. After the locking device 220 locks, the valve body 41 inside the three-position five-way solenoid valve returns to the initial position in the direction close to the first interface 411, thus completing the reversible cyclic reuse of the pop-up engine hood system, protecting pedestrian safety while also reducing the repair cost for the vehicle owner.

[0075] The vehicle according to the third - aspect embodiment of the present invention includes the jacking device 200 of the above - mentioned embodiment. Thus, the vehicle having the jacking device 200 can reduce the mis - detonation probability of the jacking device 200 and can also achieve the effect of reusing the jacking device 200, thereby improving the detonation accuracy and economic efficiency of the jacking device 200.

[0076] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0077] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0078] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0079] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A jacking device (100), characterized in that: include: Housing (10); a piston rod (20), the piston rod (20) being movably disposed on the housing (10) and dividing the internal space of the housing (10) into a first chamber (11) and a second chamber (12); A medium source (30); A control component (40) is connected between the medium source (30), the first chamber (11) and the second chamber (12) to selectively control one of the first chamber (11) and the second chamber (12) to communicate with the medium source (30).

2. The jacking device (100) according to claim 1, characterized in that: The control component (40) comprises: A valve body (41), the valve body (41) having a first interface (411), a second interface (412) and a third interface (413), the first interface (411) being connected to the first chamber (11), the second interface (412) being connected to the second chamber (12), and the third interface (413) being connected to the medium source (30); A valve core (42) is movably disposed in the valve body (41) and selectively controls one of the first interface (411) and the second interface (412) to communicate with the third interface (413).

3. The jacking device (100) according to claim 2, characterized in that: The valve body (41) further has a fourth interface (414) and a fifth interface (415); The valve core (42) has a first position, a second position and a third position. When the valve core (42) is in the first position, the first interface (411), the second interface (412), the third interface (413), the fourth interface (414) and the fifth interface (415) are all disconnected; When the valve core (42) is in the second position, the first interface (411) is in communication with the third interface (413), and the second interface (412) is in communication with the fifth interface (415); When the valve core (42) is in the third position, the second interface (412) is in communication with the third interface (413), and the first interface (411) is in communication with the fourth interface (414).

4. The jacking device (100) according to claim 2, characterized in that: The control component (40) further comprises: a first electromagnetic component, the first electromagnetic component being arranged at one end of the valve body (41) and magnetically cooperating with the valve core (42); A second electromagnetic component, the second electromagnetic component is arranged at the other end of the valve body (41) and is magnetically matched with the valve core (42).

5. The jacking device (100) according to claim 2, characterized in that: The housing (10) is provided with a first curved pipe (13) and a second curved pipe (14), the first curved pipe (13) being in communication with the first chamber (11) and the second curved pipe (14) being in communication with the second chamber (12); The control assembly (40) further comprises: a third curved pipe (43) and a fourth curved pipe (44); the third curved pipe (43) is respectively connected to the first interface (411) and the first curved pipe (13); and the fourth curved pipe (44) is respectively connected to the second interface (412) and the second curved pipe (14).

6. The jacking device (100) according to claim 1, characterized in that: The housing (10) comprises: A housing (15), wherein the medium source (30) and the control component (40) are arranged in the housing (15); An inner shell (16), wherein the inner shell (16) is arranged in the outer shell (15), and the piston rod (20) is movably arranged in the inner shell (16) and divides the internal space of the inner shell (16) into the first chamber (11) and the second chamber (12).

7. The jacking device (100) according to claim 6, characterized in that: The top of the housing (15) is provided with a through hole (151), the piston rod (20) passes through the through hole (151), and the medium source (30) is arranged at the bottom of the housing (15); The control component (40) is arranged on the outer circumference of the inner shell (16).

8. A lifting device (200), characterized in that: include: The jacking device (100) according to any one of claims 1 to 7; A hinge (210), the hinge (210) comprising: a first hinge arm (211), a second hinge arm (212) and a third hinge arm (213), the first hinge arm (211) being rotatably connected to the second hinge arm (212), the second hinge arm (212) being rotatably connected to the third hinge arm (213), the first hinge arm (211) being used to be connected to a vehicle body, the second hinge arm (212) being transmission-connected to the piston rod (20), and the third hinge arm (213) being used to be connected to a cabin cover; A locker (220) is locked between the second hinge arm (212) and the third hinge arm (213) and selectively unlocks the third hinge arm (213) from the second hinge arm (212).

9. The lifting device (200) according to claim 8, characterized in that: Also includes: A push rod (230), one end of which is used to be connected to the vehicle body and the other end of which is connected to the third hinge arm (213).

10. A vehicle, characterized in that: include: The lifting device (200) according to any one of claims 8 to 9.

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