Jack, lifting device and vehicle

Abstract

The application discloses a jacking device, a jacking device and a vehicle. The jacking device comprises a housing, a piston rod movably arranged in the housing and separating an inner 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. Thus, by arranging the control assembly, the first chamber and the second chamber can be selectively controlled to communicate with the medium source, so as to achieve the effect that the piston rod is driven to be reciprocally movable, and the purpose that the jacking device is repeatedly used is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a jacking device, a jacking device and a vehicle. BACKGROUND

[0002] Automotive safety systems can be divided into two categories: active safety systems and passive safety systems. In simple terms, active safety is to prevent accidents. Passive safety is a device that protects us and others from harm after an accident. With the rapid development of the automotive industry and the imminent implementation of pedestrian protection regulations, pedestrian safety is increasingly concerned. At present, the head of the pedestrian is mainly protected by weakening the local area of the hood, applying energy-absorbing materials and shape design. However, due to the lack of engine compartment space and the conflict between engine compartment layout and regulatory requirements, the protection means based on passive safety cannot meet the increasingly stringent safety requirements. The engine cover pop-up system has emerged as the times require.

[0003] In related technologies, the commonly used engine cover 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 cover pops up through the pressure change of the air 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 chamber, and sends relevant signals to the airbag ECU. After receiving the signal, the airbag ECU automatically matches the data stored in its internal data. Then, according to this data, it is judged whether the signal detonation with the air pressure piston engine cover support rod pop-up occurs or it is judged as a fault phenomenon. The hood pops up in a short time, and the engine cover forms an inclined surface to play a buffering role, thereby ensuring that the pedestrian does not directly contact the hard part under the vehicle hood, but has a certain deformation buffer interval. At the same time, after the hood pops up, due to the existence of a certain slope, the risk of the dummy head directly impacting the front windshield is reduced, avoiding secondary injury to the pedestrian after the collision. However, the commonly used hood pop-up system has deviations in the accurate identification of signals, often resulting in false triggering due to signal recognition errors, and does not have the ability to automatically retract after popping up, requiring replacement of related components, so its maintenance cost is high. SUMMARY

[0004] The present application aims to at least solve one of the problems in the prior art. To this end, one object of the present application is to provide a jacking device which can selectively communicate the first chamber and the second chamber with the medium source through the control assembly, thereby achieving the effect of driving the piston rod to move reciprocally.

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

[0006] The application further provides a vehicle.

[0007] The jacking device according to the first aspect of the application comprises: a housing; a piston rod movably arranged in the housing and separating an inner 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 be in communication with the medium source.

[0008] Thus, by arranging the control assembly, the first chamber and the second chamber can be selectively controlled to be in communication with the medium source, so as to drive the piston rod to move reciprocally, thereby achieving the purpose of repeatedly using the jacking device.

[0009] In some examples of the application, the control assembly comprises: 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; and a valve core movably arranged in the valve body and selectively controlling one of the first interface and the second interface to be in communication with the third interface.

[0010] In some examples of the application, the valve body further has a fourth interface and a fifth interface; and 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 is in communication with the third interface, and the second interface is in communication with the fifth interface, and when the valve core is in the third position, the second interface is in communication with the third interface, and the first interface is in communication with the fourth interface.

[0011] In some examples of the application, the control assembly further comprises: a first electromagnetic assembly arranged at one end of the valve body and magnetically matched with the valve core; and a second electromagnetic assembly arranged at the other end of the valve body and magnetically matched with the valve core.

[0012] In some examples of the application, the housing is provided with a first elbow and a second elbow, the first elbow being in communication with the first chamber, and the second elbow being in communication with the second chamber.

[0013] The control assembly further comprises: a third elbow and a fourth elbow, the third elbow being in communication with the first interface and the first elbow respectively, and the fourth elbow being in communication with the second interface and the second elbow respectively.

[0014] In some examples of the present application, the housing comprises: an outer shell, the medium source and the control assembly are arranged in the outer shell; an inner shell, the inner shell is arranged in the outer shell, the piston rod is arranged in 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 application, the top of the outer shell is provided with a through hole, the piston rod passes through the through hole, the medium source is arranged at the bottom of the outer shell; the control assembly is arranged at one side of the outer periphery of the inner shell.

[0016] The jacking device according to the second aspect of the present application comprises: the jacking device according to the first aspect of the present application; a hinge, the hinge comprises: a first hinge arm, a second hinge arm and a third hinge arm, the first hinge arm is rotatably connected with the second hinge arm, the second hinge arm is rotatably connected with the third hinge arm, the first hinge arm is used for being connected with the vehicle body, the second hinge arm is in transmission connection with the piston rod, the third hinge arm is used for being connected with the cabin cover; a lock, the lock is locked 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 application, the jacking device further comprises: a tappet, one end of the tappet is used for being connected with the vehicle body and the other end is connected with the third hinge arm.

[0018] The vehicle according to the third aspect of the present application comprises: the jacking device according to the first aspect of the present application.

[0019] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

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

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

[0023] Figure 3 is a structural schematic diagram of a jacking device according to an embodiment of the present application;

[0024] Figure 4 is a front view of a jacking device according to an embodiment of the present application;

[0025] Figure 5yes Figure 4 A cross-sectional view along the AA direction;

[0026] Figure 6 yes Figure 5 Enlarged view of region B in the middle;

[0027] Figure 7 This is a schematic diagram of the structure of the locking device according to an embodiment of the present invention;

[0028] Figure 8 This is an exploded view of a locking device according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Lifting device; 200. Lifting mechanism;

[0031] 10. Shell; 11. First chamber; 12. Second chamber; 13. First bend;

[0032] 14. Second bend; 15. Outer shell; 151. Through hole; 16. Inner shell; 20. Piston rod;

[0033] 30. Medium source; 40. Control component; 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 bend; 44. Fourth bend; 210. Hinge; 211. First hinge arm;

[0036] 212. Second hinge arm; 213. Third hinge arm; 220. Locking device; 221. Mounting housing;

[0037] 222. Locking pin; 223. Magnetic component; 224. Elastic component; 230. Push rod. Detailed Implementation

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

[0039] The following is for reference. Figures 1-8 The lifting device 100 according to an embodiment of the present invention can selectively connect the first chamber 11 and the second chamber 12 to the medium source 30 through the control component 40, thereby achieving the effect of driving the piston rod 20 to move reciprocally.

[0040] Combination Figures 1-8As shown, the jacking device 100 according to the embodiment of the first aspect of the present application comprises a housing 10, a piston rod 20, a medium source 30 and a control assembly 40. The housing 10 can serve to protect the internal structure thereof, and the housing 10 serves as a structural member outside the jacking device 100. The piston rod 20 can serve to support a load. The medium source 30 serves as a medium source device for applying 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 arranged 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, so as to selectively control one of the first chamber 11 and the second chamber 12 to communicate with the medium source 30.

[0042] Specifically, the piston rod 20 is movably arranged 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, so as to selectively control one of the first chamber 11 and the second chamber 12 to communicate with the medium source 30.

[0043] Specifically, the piston rod 20 is movably arranged 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, so as to selectively control one of the first chamber 11 and the second chamber 12 to communicate with the medium source 30.

[0044] For example, when the jacking device 100 needs to be jacked upward, the control assembly 40 controls the medium source 30 to communicate with the first chamber 11, so that the medium in the medium source 30 gradually enters the first chamber 11, and the pressure of the medium in the first chamber 11 gradually increases to form an upward pushing force for moving the piston rod 20. When the jacking device 100 needs to be retracted downward, the control assembly 40 controls the medium source 30 to communicate with the second chamber 12, so that the medium in the medium source 30 gradually enters the second chamber 12, and the pressure of the medium in the second chamber 12 gradually increases to form a downward extrusion force for the medium originally in the first chamber 11, so that the upward medium pressure acting on the piston rod 20 gradually decreases until the piston rod 20 returns to the starting position under the action of its own gravity, so that the piston rod 20 can realize the effect of reciprocating movement.

[0045] Therefore, by setting the control assembly 40, the first chamber 11 and the second chamber 12 can be selectively controlled to communicate with the medium source 30, so as to achieve the effect of driving the piston rod 20 to move reciprocally, thereby realizing the purpose of repeatedly using the jacking device 100.

[0046] According to some optional embodiments of the present application, in combination with Figure 5 and Figure 6 As shown in the drawings, the control assembly 40 comprises 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 with the first chamber 11, the second interface 412 is connected with the second chamber 12, and the third interface 413 is connected with the medium source 30, the valve core 42 is movably arranged in 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] In detail, in combination with Figure 5 and Figure 6 As shown in the drawings, the first interface 411 and the second interface 412 on the valve body 41 are respectively communicated with the first chamber 11 and the second chamber 12, and the third interface 413 on the valve body 41 is communicated with the medium source 30, so as to provide a complete communication channel for the control assembly 40, the medium source 30, the first chamber 11 and the second chamber 12. The valve core 42 is movably arranged in 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, so as to facilitate 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 in the drawings, 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 communicates with the third interface 413, and the second interface 412 communicates with the fifth interface 415; when the valve core 42 is in the third position, the second interface 412 communicates with the third interface 413, and the first interface 411 communicates with the fourth interface 414.

[0049] The fourth port 414 and the fifth port 415 lead to the outside of the housing 10. The fourth port 414 is selectively connected to the first port 411, and the fifth port 415 is selectively connected to the second port 412. When the valve core 42 is in the first position, the first port 411, the second port 412, the third port 413, the fourth port 414, and the fifth port 415 are all disconnected (i.e., neither the first chamber 11 nor the second chamber 12 forms a medium passage with the medium source 30 or the outside of the housing 10). At this time, the lifter 100 is in the holding state (i.e., the piston rod 20 is held in a certain position).

[0050] When the valve core 42 is in the second position (at which time the piston rod 20 is in the upward-lifted state), the first port 411 is connected to the third port 413, and the fourth port 414 is disconnected. This ensures that the first chamber 11 is connected to the medium source 30, and the medium source 30 at the fourth port 414 will not leak at the first port 411, thus ensuring the pressure increase rate in the first chamber 11. At the same time, the second port 412 is connected to the fifth port 415, which allows some of the medium in the tiny gap between the piston rod 20 and the inner wall of the housing 10 (which can also be understood as the second chamber 12) to be slowly discharged through the passage formed by the second port 412 and the fifth port 415, thereby reducing the risk of the housing 10 deforming and exploding due to excessive pressure from the medium source 30.

[0051] When the valve core 42 is in the third position (at which time the piston rod 20 is in a downward retracted state), the second port 412 is connected to the third port 413, and the fifth port 415 is disconnected. This ensures that the second chamber 12 is connected to the medium source 30, but the medium source 30 at the second port 412 will not leak at the fifth port 415, thus ensuring the pressure increase rate in the second chamber 12. At the same time, the first port 411 is connected to the fourth port 414, which allows the medium in the first chamber 11 to be slowly discharged through the passage formed by the second port 412 and the fourth port 414, thereby preventing the problem of the lifter 100 hitting the naval cover due to excessive pressure relief.

[0052] Furthermore, the control component 40 also includes a first electromagnetic component and a second electromagnetic component. The first electromagnetic component is disposed at one end of the valve body 41 and magnetically engages with the valve body 41, and the second electromagnetic component is disposed at the other end of the valve body 41 and magnetically engages with the valve body 41.

[0053] The first electromagnetic component and the second electromagnetic component are respectively located at both ends of the valve body 41. When the first electromagnetic component and the second electromagnetic component are energized, they generate electromagnetic induction with the valve core 42 in the valve body 41. This allows the valve body 41 to move under the action of Lorentz force, thereby achieving the effect of selectively connecting and disconnecting the first interface 411 and the second interface 412 through the third interface 413. This, in turn, allows the lifter 100 to drive the piston rod 20 to achieve a reversible reciprocating motion effect.

[0054] For example, in one embodiment, the first electromagnetic component is located near the first interface 411, and the second electromagnetic component is located near the second interface 412. When the valve core 42 is in the first position (i.e., the piston rod 20 is held in a certain position), neither the first nor the second electromagnetic component is energized, and the valve core 42 does not move. When the valve core 42 is in the second position (when the piston rod 20 is in an upward-lifted state), the first electromagnetic component is energized, and the valve core 42 moves in the direction of disconnecting the first interface 411 under the action of Lorentz force. When the valve core 42 is in the third position (when the piston rod 20 is in a downward-retracted state), the second electromagnetic component is energized, and the valve core 42 moves in the direction of disconnecting the second interface 412 under the action of Lorentz force. By selectively connecting the first interface 411 and the second interface 412 through the energization of the first and second electromagnetic components, the responsiveness of the piston rod 20 after being pressed can be improved in a timely and rapid manner, thereby improving the reliability of the lifter 100.

[0055] In detail, combined Figure 5 and Figure 6 As shown, the housing 10 is provided with a first bend 13 and a second bend 14. The first bend 13 is connected to the first chamber 11, and the second bend 14 is connected to the second chamber 12. The control assembly 40 also includes a third bend 43 and a fourth bend 44. The third bend 43 is connected to the first interface 411 and the first bend 13, respectively, and the fourth bend 44 is connected to the second interface 412 and the second bend 14, respectively.

[0056] The first chamber 11, the first bend 13 on the housing 10, the third bend 43 on the control component 40, and the first interface 411 are connected in sequence, thus providing 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 bend 14 on the housing 10, the fourth bend 44 on the control component 40, and the second interface 412 are connected in sequence, thus providing 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 lifting device 100 in achieving the effect of medium circulation.

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

[0058] In detail, the outer shell 15 protects the inner shell 16 and its internal structure, primarily preventing external interference and damage to the internal structure. The outer shell 15 and inner shell 16 provide dual protection for the piston rod 20. The piston rod 20 is axially movable within the inner shell 16, providing a favorable working environment and improving the stability of its reciprocating motion. The piston rod 20 divides the internal space of the inner shell 16 into a first chamber 11 and a second chamber 12, facilitating spatial division.

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

[0060] The piston rod 20 passes through the through hole 151 at the top of the outer shell 15, allowing it to connect with the external structure of the shell 10. This facilitates the piston rod 20's lifting and retracting actions on the external structure. The outer shell 15 protects the internal medium source 30, and placing the medium source 30 at the bottom of the outer shell 15 avoids interfering with the normal movement of the piston rod 20, thus improving its layout rationality. The control component 40 is located on one side of the outer circumference of the inner shell 16. This allows the control component 40, while protected by the outer shell 15, to also function as a communication link between the medium source 30 and the inner shell 16, further improving its layout rationality.

[0061] Combination Figures 1-3 As shown, the lifting device 200 according to a second aspect embodiment of the present invention includes the lifting device 100, hinge 210 and 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, and the second hinge arm 212 is rotatably connected to the third hinge arm 213. The first hinge arm 211 is used to connect to the vehicle body, the second hinge arm 212 is drivenly connected to the piston rod 20, and the third hinge arm 213 is used to connect to the hood. The locking device 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.

[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 hood, and the two ends of the second hinge arm 212 are rotatably connected to the other ends of the first hinge arm 211 and the third hinge arm 213, respectively. The third hinge arm 213 is connected to the lifter 100 in a transmission manner. This allows the third hinge arm 213 to lift the hood by a certain displacement (i.e., the limit position that the lifter 100 can lift upward or the limit position that the third hinge arm 213 can rotate upward relative to the second hinge arm 212) under the driving force of the lifter 100, thereby achieving the hood bulging effect and avoiding the risk of pedestrians directly contacting the hard parts under the hood.

[0063] Furthermore, the locking device 220 can selectively lock the second hinge arm 212 and the third hinge arm 213. When the locking device 220 locks the second hinge arm 212 and the third hinge arm 213, the mutual rotation between the second hinge arm 212 and the third hinge arm 213 is restricted, thus preventing accidental detonation of the third hinge arm 213. When the locking device 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, thus facilitating the lifting device 200 to lift up or lower and retract, thereby achieving the effect of cyclic and reusable use of the lifting device 200, thereby protecting pedestrian safety while reducing the maintenance cost of the lifting device 200. In addition, the locking device 220 can reduce the probability of accidental detonation of the lifting device 200 and can also help realize the reuse of the lifting device 200, thereby improving the detonation accuracy and economy of the lifting device 200.

[0064] According to some optional embodiments of the present invention, in combination Figure 7 and Figure 8 As shown, the locking device 220 includes a mounting housing 221, a locking pin 222, a magnetic element 223, and an electromagnetic coil. The locking pin 222 is axially movable and is mounted on the mounting housing 221. The locking pin 222 is locked between the second hinge arm 212 and the third hinge arm 213. The magnetic element 223 is disposed on the locking pin 222. The electromagnetic coil is sleeved on the mounting housing 221. The electromagnetic coil magnetically induces with the magnetic element 223 when energized.

[0065] For example, when the locking device 220 is in the locked state, the electromagnetic coil is not energized, and the locking pin 222 is locked between the second hinge arm 212 and the third hinge arm 213 in the axial direction. When the locking device 220 receives an unlocking command signal, the electromagnetic coil is energized. At this time, the magnetic component 223 moves along the unlocking direction under the magnetic force generated by the energized electromagnetic coil. In this way, the unlocking signal can be sent to the locking device 220 in a timely and accurate manner through the control of the electrical signal, thereby reducing the probability of accidental detonation of the second hinge arm 212. This not only protects pedestrian safety but also reduces the maintenance cost of the lifting device 200.

[0066] Specifically, in combination Figure 8 As shown, the locking device 220 also includes an elastic element 224, which is disposed between the mounting housing 221 and the locking pin 222 to provide the locking pin 222 with an elastic restoring force. The elastic element 224 can undergo elastic deformation to generate an elastic restoring force, and its two ends abut against the mounting housing 221 and the locking pin 222, respectively. For example, when the locking device 220 receives a locking command, the electromagnetic coil is de-energized, and the locking pin 222 only experiences the elastic restoring force from the elastic element 224. The locking pin 222 moves towards the locking direction, thus locking the second hinge arm 212 and the third hinge arm 213. When the locking device 220 receives an unlocking command, the electromagnetic coil is energized, and the magnetic force on the locking pin 222 overcomes the elastic force from the elastic element 224. The locking pin 222 moves towards the unlocking direction, thus unlocking the second hinge arm 212 and the third hinge arm 213. This effectively utilizes the elastic properties of the elastic element 224 to automatically lock the third hinge arm 213, thereby improving the scientific nature and practicality of the locking device 220.

[0067] In detail, compared to disposable lifting devices, the automatic pop-up mechanism of the lifting device 200 in this case can respond quickly to reduce injury to pedestrians, thereby protecting their safety. After the collision hazard is eliminated, it can return to its original position without needing to be replaced, thus making the lifting device 200 reusable. Furthermore, this design ensures pedestrian safety during a collision while also reducing maintenance costs for the user.

[0068] According to some alternative embodiments of the invention, the lifting device 200 further includes a strut 230, one end of which is connected to the vehicle body, and the other end of which is connected to the third hinge arm 213.

[0069] Specifically, the two ends of the strut 230 are connected to the vehicle body and the third hinge arm 213, respectively. This allows the strut 230 to provide auxiliary support and cushioning for the third hinge arm 213, thereby further improving the stability and reliability of the lifting device 200 in supporting the lifting hood. The strut 230 can be a telescopic pneumatic strut, but is not limited to this.

[0070] The working process of the lifting device 200 is described below:

[0071] For example, the control component 40 can be a three-position five-way solenoid valve, and the medium source 30 can be a high-pressure gas generator. The vehicle also includes active sensors and a controller. The active sensors are used to detect collision risk signals, and the controller is electrically connected to the active sensors, the lock 220, and the lifter 100 to send an unlock signal to the lock 220 and a pressure relief lift signal to the lifter 100 when a collision risk is detected.

[0072] When the vehicle's active sensors detect a collision risk signal, they transmit this signal to the controllers on both sides of the engine compartment. After the controllers process the collision risk signal, they send a command to drive the locking device 220 to work. The elastic element 224 in the locking device 220 is pushed back by the force, causing 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 of the three-position five-way solenoid valve moves toward the first interface 411. At this time, the first interface 411 and the third interface 413 are connected. The high-pressure gas in the medium source 30 enters the first chamber 11 through the control component 40. A small amount of 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 out the piston rod 20. The second hinge arm 212 is lifted by the piston rod 20. The second hinge arm 212 rotates counterclockwise around the connecting shaft with the first hinge arm 211, and drives the third hinge arm 213 to push the engine hood to move clockwise and upward.

[0073] After the lifting device 200 completes the lifting action, the valve body 41 in the three-position five-way solenoid valve moves away from the first interface 411 to reset to the initial position and remain there. At this time, the hood remains in the pop-up position, so as to minimize the injury to pedestrians after the collision and protect pedestrian safety to the maximum extent.

[0074] Once the collision hazard has passed, the valve body 41 within the three-position five-way solenoid valve continues to move away from the first interface 411. High-pressure gas from the medium source 30 enters the second chamber 12 via the control component 40, while gas from the first chamber 11 is discharged from the lifter 100 via the control component 40. Simultaneously, the high-pressure gas pushes the piston rod 20 back, causing the second hinge arm 212 and the third hinge arm 213 to move to their original positions. After the locking device 220 is de-energized, the compressed spring inside is released, causing the locking pin in the locking device 220 to return to its original position. The locking device 220 then locks the second hinge arm 212 and the third hinge arm 213. After the locking device 220 locks, the valve body 41 within the three-position five-way solenoid valve returns to its initial position towards the first interface 411, thus completing the reversible cycle of the pop-up hood system. This protects pedestrian safety while reducing maintenance costs for vehicle owners.

[0075] According to a third aspect of the present invention, a vehicle includes the lifting device 200 of the above embodiments. Thus, a vehicle having the lifting device 200 can reduce the probability of accidental detonation of the lifting device 200 and can also achieve the effect of reusability of the lifting device 200, thereby improving the detonation accuracy and economic efficiency of the lifting device 200.

[0076] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0077] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

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

[0079] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lifting device (100), characterized in that, include: Shell (10); A piston rod (20) is movably disposed on the housing (10) and divides the internal space of the housing (10) into a first chamber (11) and a second chamber (12). 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); The control component (40) includes: 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). A valve core (42) is movably disposed within 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); The valve body (41) also has a fourth port (414) and a fifth port (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 connected to the third interface (413), and the second interface (412) is connected to the fifth interface (415); When the valve core (42) is in the third position, the second interface (412) is connected to the third interface (413), and the first interface (411) is connected to the fourth interface (414); The housing (10) includes: The housing (15) is provided with the medium source (30) and the control component (40). The inner shell (16) is disposed inside the outer shell (15), and the piston rod (20) is movably disposed 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). The top of the outer casing (15) is provided with a through hole (151), the piston rod (20) passes through the through hole (151), and the medium source (30) is provided at the bottom of the outer casing (15); The control component (40) is disposed on one side of the outer perimeter of the inner shell (16).

2. The lifting device (100) according to claim 1, characterized in that, The control component (40) further includes: The first electromagnetic component is disposed at one end of the valve body (41) and magnetically engaged with the valve core (42); The second electromagnetic component is disposed at the other end of the valve body (41) and magnetically engages with the valve core (42).

3. The lifting device (100) according to claim 1, characterized in that, The housing (10) is provided with a first bend (13) and a second bend (14), the first bend (13) being connected to the first chamber (11) and the second bend (14) being connected to the second chamber (12); The control component (40) further includes a third bend (43) and a fourth bend (44), wherein the third bend (43) is connected to the first interface (411) and the first bend (13) respectively, and the fourth bend (44) is connected to the second interface (412) and the second bend (14) respectively.

4. A lifting device (200), characterized in that, include: The lifting device (100) according to any one of claims 1-3; 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), and the second hinge arm (212) is rotatably connected to the third hinge arm (213). The first hinge arm (211) is used to connect with the vehicle body, the second hinge arm (212) is drivenly connected to the piston rod (20), and the third hinge arm (213) is used to connect with the hood. A 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).

5. The lifting device (200) according to claim 4, characterized in that, Also includes: A tappet (230), one end of which is connected to the vehicle body and the other end is connected to the third hinge arm (213).

6. A vehicle, characterized in that, include: The lifting device (200) according to any one of claims 4-5.

Images