Lifting device, hood lifting assembly, vehicle
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG GEELY HLDG GRP CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-21
Smart Images
Figure CN224532509U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle manufacturing technology, and in particular to a lifting device, a hood lifting assembly, and a vehicle. Background Technology
[0002] In some vehicles, the hood can automatically pop up in the event of a traffic accident to cushion the impact on pedestrians and reduce their injuries.
[0003] In related technologies, a lifting mechanism is installed under the front cover. This mechanism includes a gas generator, a housing with a chamber, and a push rod. The gas generator produces gas that enters the chamber of the housing, and the gas pressure pushes the push rod to lift the front cover. After the front cover is lifted, some gas leakage may occur in the chamber, which reduces the pushing force on the push rod and leads to insufficient support for the front cover. Utility Model Content
[0004] To address the aforementioned technical problems, this application provides a lifting device, a hood lifting assembly, and a vehicle that, when lifted, are unaffected by gas leakage and provide sufficiently stable support.
[0005] In a first aspect, this application provides a lifting device, including a housing, a lifting member, a gas generator, and a locking mechanism, wherein a receiving cavity is formed inside the housing; at least a portion of the lifting member is movably disposed within the receiving cavity; the gas generator is connected to the housing, and its output end communicates with a first end of the receiving cavity; when the gas generator inputs gas into the receiving cavity, the lifting member is pushed to move along the receiving cavity and extends out of a second end of the receiving cavity; the locking mechanism is mounted on the housing and includes a stop member that can pass through the housing; when the lifting member moves along the receiving cavity to a preset position, the stop member cooperates with the lifting member to prevent the lifting member from moving toward the first end of the receiving cavity.
[0006] The lifting device provided in this application, when the output end of the gas generator inputs gas into the receiving cavity inside the housing, can push the lifting member to move along the receiving cavity. The lifting member extends out of the second end of the receiving cavity, thereby lifting the corresponding object (such as a vehicle hood) to buffer the impact on pedestrians. When the corresponding object is lifted to a preset position, due to the provision of a locking mechanism, the stop member of the locking mechanism passes through the housing and cooperates with the lifting member to prevent the lifting member from moving towards the first end of the receiving cavity. Thus, even if the gas generated by the gas generator decreases or leaks to a certain extent, although the gas pressure inside the receiving cavity decreases, the stop member of the locking mechanism can provide sufficient support for the lifting member, and the lifting member and the object it supports will not fall back.
[0007] In some implementations, the locking mechanism includes a drive assembly mounted on the housing and connected to a stop. When the lifting member moves along the receiving cavity to a preset position, the drive assembly applies a force toward the lifting member to the stop.
[0008] In some implementations, the drive assembly includes a locking housing and an elastic element. The locking housing is connected to the housing, and the elastic element is disposed inside the locking housing, with one end abutting against the inner wall of the locking housing and the other end abutting against the stop. The elastic element is used to apply an elastic force toward the lifting member to the stop.
[0009] In some implementations, a first hole is provided on the housing along the radial direction, and a second hole is provided on the locking housing corresponding to the first hole. The first end of the stop member can pass through the first hole to cooperate with the lifting member, and the second end passes through the second hole to extend out of the locking housing.
[0010] The stop is provided with a radial boss near the first hole. The elastic element is sleeved on the stop, with one end abutting against the inner wall of the locking housing and the other end abutting against the radial boss.
[0011] In some implementations, the locking mechanism also includes an operating member, the stop member having an external thread near its second end, the operating member having an internal thread, and the operating member engaging with the external thread of the second end of the stop member extending out of the locking housing.
[0012] In some implementations, the lifting member has a locking groove in the radial direction, and the stop member has a stop portion at the end facing the lifting member, with the outer contours of the locking groove and the stop portion being adapted to each other.
[0013] When the lifting component moves along the receiving cavity to the preset position, the stop part engages with the locking groove.
[0014] In some implementations, the locking groove has a guide wall below the lifting direction, and the lower surface of the stop has an inclined surface. The guide wall and the inclined surface gradually slope downward in the direction away from the stop.
[0015] As the lifting component rises along the receiving cavity, the guide wall and the inclined surface slide relative to each other to push the stop out of the locking groove.
[0016] In some implementations, there are multiple locking slots, which are spaced apart along the axial direction of the lifting member.
[0017] In some implementations, the lifting component includes a lifting rod and a piston. The piston is located between the lifting rod and the gas generator and is made of an elastic material. When the gas generator inputs gas into the receiving cavity, the receiving cavity has a first pressure, and the piston produces a first deformation, sealing the space where the gas generator and the lifting rod are located, so as to push the lifting rod to move along the receiving cavity.
[0018] When the lifting component moves along the receiving cavity to the preset position, there is a second pressure in the receiving cavity, the piston produces a second deformation, and the space where the gas generator and the lifting rod are located is connected.
[0019] In some implementations, the lifting device also includes a triggering structure located at the upper end of the lifting member, which is used to trigger the target structure during the lifting process.
[0020] Secondly, embodiments of this application provide a vehicle cover lifting assembly, including a hinge and a lifting device according to the first aspect, wherein the hinge is used to connect the vehicle cover; the lifting device is disposed below the hinge, and when a gas generator inputs gas into the receiving cavity, the lifting member drives the hinge to lift the vehicle cover.
[0021] A vehicle hood can be a hood that needs to be lifted up, including the front hood, roof, and trunk lid of a vehicle. This embodiment uses the front hood of a vehicle as an example to illustrate the solution.
[0022] The hood lifting assembly of this application embodiment includes a hinge and a lifting device in the first aspect. The hinge can be used to connect the hood, and the lifting device is disposed below the hinge. When needed, the hinge is driven to lift the hood. Because it includes the lifting device in the first aspect, it has the same technical effect, that is, it can have sufficiently stable support in the lifted state without being affected by gas leakage.
[0023] To address the issue of damaged components after the lifting device is lifted, resulting in high repair and replacement costs, referring to the figures, some embodiments of the hood lifting assembly in this application also include an unlocking mechanism, which is disposed on the hinge at a position corresponding to the fastener.
[0024] As the lifting mechanism drives the hinge to lift the hood, it triggers the unlocking mechanism to unlock the fasteners on the hinge.
[0025] In some implementations, the unlocking mechanism includes an unlocking shell and an unlocking rod. The unlocking shell is fixed to a hinge and has a third hole. A first end of the unlocking rod extends movably through the third hole and out of the unlocking shell, while a second end faces the fastener.
[0026] As the lifting mechanism drives the hinge to lift the hood, the lifting mechanism pushes the unlocking lever toward the fastener to unlock the fastener on the hinge.
[0027] In some implementations, the lifting device also includes a trigger structure disposed at the upper end of the lifting member. The trigger structure has a trigger flange that gradually extends outward in the opposite direction of lifting. During the process of the lifting member driving the hinge to lift the hood, the trigger flange slides into contact with the first end of the unlocking lever to push the unlocking lever toward the fastener.
[0028] Thirdly, embodiments of this application provide a vehicle, including a hood and a hood lifting assembly according to a second aspect, wherein the hinge of the hood lifting assembly is connected to the hood.
[0029] In the vehicle of this application embodiment, the inclusion of the hood lifting assembly of the second aspect allows the hood to be lifted, achieving the same beneficial effect. That is, in the lifted state, it is unaffected by gas leakage and provides sufficiently stable support. Attached Figure Description
[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of the hood lifting assembly according to an embodiment of this application;
[0033] Figure 2 This is an exploded structural diagram of the hood lifting assembly according to an embodiment of this application;
[0034] Figure 3 This is a schematic diagram of the structure of the hood lifting assembly according to an embodiment of this application after removing the housing;
[0035] Figure 4 This is a schematic diagram of the lifting device according to an embodiment of this application;
[0036] Figure 5 This is a schematic diagram of the lifting component of the lifting device according to an embodiment of this application;
[0037] Figure 6 This is a side view of the structure of the hood lifting assembly according to an embodiment of this application;
[0038] Figure 7 for Figure 6 A cross-sectional view of point AA in the diagram;
[0039] Figure 8 for Figure 7 A magnified view of a portion of the locking structure;
[0040] Figure 9 for Figure 7 A magnified view of point B in the diagram.
[0041] Explanation of reference numerals in the attached figures:
[0042] 1. Lifting device; 11. Housing; 111. Receiving cavity; 112. First hole; 12. Lifting component; 121. Locking groove; 1211. Guide wall; 122. Lifting rod; 123. Piston; 13. Gas generator; 14. Locking mechanism; 141. Stop; 1411. Radial boss; 1412. Stop part; 142. Drive assembly; 1421. Locking shell; 14211. Second hole; 1422. Elastic element; 143. Operating element; 15. Trigger structure; 151. Trigger flange; 16. Fixing plate; 2. Hinge; 3. Hood; 4. Unlocking mechanism; 41. Unlocking shell; 411. Third hole; 42. Unlocking rod; 5. Fastener. Detailed Implementation
[0043] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0044] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.
[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.
[0046] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.
[0047] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0048] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.
[0049] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0050] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0051] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.
[0052] The following is a detailed description of this application.
[0053] This application provides a lifting device 1, a hood lifting assembly, and a vehicle, which can solve the problem of reduced thrust and insufficient support caused by gas leakage during the lifting state.
[0054] In this application embodiment, the vehicle can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles. Furthermore, this application embodiment does not limit the power source of the vehicle; for example, the vehicle in this application embodiment can be a gasoline-powered vehicle, a natural gas-powered vehicle, an electric vehicle, or a vehicle with other power sources.
[0055] The vehicle in this embodiment may include wheels, a frame, and a powertrain. The powertrain may be housed in the front compartment formed by the frame and is connected to the wheels for driving their rotation. A hood is generally provided above the front compartment to protect the powertrain and can be opened for maintenance. The vehicle may also have a trunk lid, roof cover, etc. For ease of description, the following embodiment will be described using the hood as an example.
[0056] In the event of a vehicle accident, especially an accidental collision with a pedestrian, the pedestrian's head is highly likely to collide with the hood. In such cases, to reduce the injury to the pedestrian, in some embodiments, the hood can be pushed up when needed (e.g., in the event of a collision) to form an isolation space, which can cushion the impact intensity on the pedestrian and reduce the injury.
[0057] The hood and frame can be either fixedly connected or hinged. A hinged connection facilitates opening the hood, making vehicle maintenance easier. (See reference) Figure 1 and Figure 2 In some embodiments, the hood is connected to the vehicle frame via hinge 2, and when the hood is lifted, it can be lifted together with the hinge 2.
[0058] The vehicle hood 3 can be lifted by the lifting device 1, which can be set below the vehicle hood 3. When the conditions are met, the hood 3 or the vehicle together with the hinge 2 can be lifted.
[0059] The hood lifting assembly of this application embodiment may include a hinge 2 and a lifting device 1. The hinge 2 is used to connect the hood 3, and the lifting device 1 can be used to lift the hinge 2 and the hood 3 together.
[0060] The lifting device 1 of this application embodiment, through its structural design, can solve the problem of reduced thrust and insufficient support caused by gas leakage during the lifting state.
[0061] Reference Figure 3This is a schematic diagram of the lifting device 1 provided in this application, including a housing 11, a lifting member 12, a gas generator 13, and a locking mechanism 14. The housing 11 has an internal cavity 111. At least a portion of the lifting member 12 is movably disposed within the cavity 111. The gas generator 13 is connected to the housing 11, and its output end communicates with the first end of the cavity 111. When the gas generator 13 inputs gas into the cavity 111, the lifting member 12 is pushed to move along the cavity 111 and extends out of the second end of the cavity 111. The locking mechanism 14 is mounted on the housing 11 and includes a stop 141 that can pass through the housing 11. When the lifting member 12 moves along the cavity 111 to a preset position, the stop 141 cooperates with the lifting member 12 to prevent the lifting member 12 from moving toward the first end of the cavity 111.
[0062] In this embodiment, a receiving cavity 111 is formed inside the housing 11; that is, the lifting device 1 includes a housing 11, and a cavity that can accommodate some objects is formed inside the housing 11. The cavity can be directly enclosed by the housing 11, or it can be enclosed by other structures set inside the housing 11, as long as there is such a cavity inside the housing 11.
[0063] The lifting member 12 is at least partially movably disposed within the receiving cavity 111; this means that the lifting member 12 may be entirely located within the receiving cavity 111 or only partially located within the receiving cavity 111; "movably" means that the lifting member 12 can be displaced relative to the housing 11, or relative to the inner wall of the receiving cavity 111.
[0064] Gas generator 13 refers to a device that can generate gas. In this embodiment, the gas generated by gas generator 13 is used to provide air pressure into the receiving cavity 111. It can be a hydrogen generator, nitrogen generator, air generator, etc. The gas source for gas generator 13 can be a device that can generate gas itself, such as a Kip generator; or it can be connected to other devices that can generate gas, such as a gas transmitter connected to the vehicle's airbag inflation passage. This allows the airbag deployment and the opening of the vehicle hood 3 to be linked in the event of a collision, making the protection during a collision more intelligent. Of course, gas generator 13 can also be independent, but its triggering signal can come from the signal controlling airbag deployment.
[0065] The output end of the gas generator 13 is connected to the first end of the receiving cavity 111, meaning that the gas generated by the gas generator can enter the receiving cavity 111 through the output end. The output end of the gas generator 13 is the outlet of the gas generator 13 that generates gas, from which the gas flows out and creates pressure within the receiving cavity 111. Furthermore, the gas generator 13 can be detachably connected to the housing 11 for easy replacement.
[0066] When gas is introduced into the receiving cavity 111 by the gas generator 13, the lifting member 12 is pushed to move along the receiving cavity 111 and extends out of the second end of the receiving cavity 111; that is, the gas generator 13 generates gas, which enters the receiving cavity 111, and the gas pressure in the receiving cavity 111 continuously increases, thereby pushing the lifting member 12 to move along the receiving cavity 111. The gas generator 13 fills the receiving cavity 111 with gas from the first end, and the lifting member 12 moves along the receiving cavity 111, extending out of the second end of the receiving cavity 111, thus realizing the lifting action. The first end and the second end of the receiving cavity 111 can be two opposite ends for ease of configuration.
[0067] The locking mechanism 14 is installed on the housing 11, which means that the locking mechanism 14 can be fixed to the housing 11 in a variety of ways, such as integral molding connection, detachable connection (including fastener connection, threaded connection, snap-fit, etc.), welding, bonding, etc.
[0068] The locking mechanism 14 includes a stop 141 that can pass through the housing 11, meaning that the locking mechanism 14 includes a stop that can pass through the housing 11, and thus the stop can cooperate with the lifting member 12.
[0069] When the lifting member 12 moves to a preset position along the receiving cavity 111, it means that the lifting member 12 is propelled by the gas from the gas generator 13 and moves along the receiving cavity 111. Among the positions the lifting member 12 moves to, at least one preset position is included. This preset position can be the position of the lifting member 12 required to lift the vehicle's hood 3. This preset position can be one position or multiple positions. Multiple positions allow for adjustment and selection of different lifting heights, thus broadening the scope of the lifting device 1 in this embodiment.
[0070] The stop 141 cooperates with the lifting member 12, meaning that after the stop passes through the housing 11, it contacts the lifting member 12 and can produce a certain interference or locking effect, thereby providing sufficient support force for the lifting member 12 through the stop.
[0071] The stop 141 cooperates with the lifting member 12 to prevent the lifting member 12 from moving toward the first end of the receiving cavity 111. This means that the cooperation between the stop 141 and the lifting member 12 is sufficient to prevent the lifting member 12 from falling back. In this way, the stop 141 can provide sufficient support for the weight of the vehicle hood 3 on the lifting member 12. The cooperation between the stop 141 and the lifting member 12 can lock the lifting member 12 so that it cannot be lifted upward, or it can only restrict the tendency of the lifting member 12 to fall back without restricting the upward movement of the lifting member 12. This makes it easier to unlock and facilitates adjustment between multiple different preset positions.
[0072] The lifting device 1 provided in this application, when the output end of the gas generator 13 inputs gas into the receiving cavity 111 inside the housing 11, can push the lifting member 12 to move along the receiving cavity 111. The lifting member 12 extends out of the second end of the receiving cavity 111, thereby lifting the corresponding object (e.g., a vehicle hood) to buffer the impact on pedestrians. When the corresponding object is lifted to a preset position, due to the provision of the locking mechanism 14, the stop member 141 of the locking mechanism 14 passes through the housing 11 and cooperates with the lifting member 12 to prevent the lifting member 12 from moving towards the first end of the receiving cavity 111. In this way, even if the gas generated by the gas generator 13 is reduced or leaked to a certain extent, although the gas pressure in the receiving cavity 111 decreases, the stop member 141 of the locking mechanism 14 can provide sufficient support for the lifting member 12, and the lifting member 12 and the object it supports will not fall back.
[0073] Reference Figure 4 In some embodiments, to facilitate the fixing of the lifting device 1, the lifting device 1 further includes a fixing plate 16, which is fixed to the housing 11 and used to fix the housing 11 at the corresponding position of the vehicle.
[0074] The fixing plate 16 can be connected to the required position in a variety of ways, such as welding, snap-fitting, and fastener connection, and this application does not limit this.
[0075] The stop 141 of the locking mechanism 14 and the lifting member 12 have at least two states: engaged and unlocked. The stop 141 can be displaced relative to the housing 11 to engage or unlock with the lifting member 12. The stop 141 of the locking mechanism 14 can be manually controlled or automatically driven by a gas system.
[0076] Reference Figure 6 , Figure 7 and Figure 8 In some embodiments, the locking mechanism 14 includes a drive assembly 142, which is mounted on the housing 11 and connected to the stop member 141. When the lifting member 12 moves along the receiving cavity 111 to a preset position, the drive assembly 142 applies a force toward the lifting member 12 to the stop member 141.
[0077] The drive component 142 can be implemented in various ways, such as a solenoid valve, a linear motor, a cylinder, or an elastic element 1422 that can provide elastic force.
[0078] Reference Figure 7 and Figure 8In some embodiments, the drive assembly 142 includes a locking housing 1421 and an elastic member 1422. The locking housing 1421 is connected to the housing 11. The elastic member 1422 is disposed inside the locking housing 1421, with one end abutting against the inner wall of the locking housing 1421 and the other end abutting against the stop member 141. The elastic member 1422 is used to apply an elastic force toward the lifting member 12 to the stop member 141.
[0079] Here, the locking housing 1421 is connected to the housing 11, which can be either detachably connected or integrally formed with the housing 11. A detachable connection facilitates installation and maintenance. The detachable connection between the locking housing 1421 and the housing 11 can be achieved through threaded connections, snap-fit connections, or other methods.
[0080] The interior of the locking housing 1421 can form a space to accommodate the elastic element 1422. The elastic element 1422 is disposed inside the locking housing 1421 to provide an elastic force that can drive the stop.
[0081] One end of the elastic element 1422 abuts against the inner wall of the locking shell 1421, and the other end abuts against the stop element 141. This means that the two opposite ends of the elastic element 1422 make elastic contact with the locking shell 1421 and the stop element 141 respectively. The elastic element 1422 can be in an elastically compressed state, thereby applying a continuous elastic force to the stop element 141. The stop element 141 will always have a tendency to move towards the lifting member 12.
[0082] The elastic element 1422 can be a sheet or spring made of elastic material, as shown in the reference. Figure 8 In some embodiments, the stop member 141 is provided with a radial boss 1411 near the first hole 112, and the elastic member 1422 is sleeved on the stop member 141, with one end abutting against the inner wall of the locking shell 1421 and the other end abutting against the radial boss 1411.
[0083] By attaching the spring to the stop 141, space inside the locking housing 1421 can be saved, and the stop 141 can limit and guide the deformation of the spring, thereby improving the service life of the parts.
[0084] To ensure smoother movement of the stop within the locking housing 1421 and through the housing 11, refer to... Figure 8 In some embodiments, a first hole 112 is provided radially on the housing 11, and a second hole 14211 is provided on the locking housing 1421 corresponding to the first hole 112. The first end of the stop member 141 can pass through the first hole 112 to cooperate with the lifting member 12, and the second end passes through the second hole 14211 to extend out of the locking housing 1421.
[0085] In this way, since the stop member can move along its axial direction, and the second hole 14211 of the locking shell 1421 and the first hole 112 of the housing 11 are correspondingly provided. The portion of the stop member 141 near the second end engages with the second hole 14211 of the locking shell 1421, and the portion of the stop member 141 near the first end engages with the first hole 112 of the housing 11, which allows the stop member 141 to move smoothly and guides and limits its movement direction, making locking more accurate.
[0086] In this embodiment, since the second end of the stop member 141 extends out of the locking shell 1421 through the second hole 14211, the position of the second end of the stop member 141 can be easily observed to determine the locking state of the stop member 141. Moreover, the second end of the stop member 141 can be easily operated manually or with the help of tools to perform actions such as unlocking or locking the stop member.
[0087] Based on this, refer to Figure 8 In some embodiments, the locking mechanism 14 further includes an operating member 143, the stop member 141 having an external thread near the second end, the operating member 143 having an internal thread, and the operating member 143 engaging with the external thread of the second end of the stop member 141 extending out of the locking housing 1421.
[0088] To facilitate operation of the second end of the stop 141 for adjusting its locking position or state, an operating member 143 is threadedly fitted onto the second end of the stop 141. When the operating member 143 is rotated to move relative to the stop 141 toward the locking housing 1421, it cannot continue forward because it is blocked by the locking housing 1421. Thus, the engagement of the external and internal threads allows the operating member 143 to pull the stop 141 toward the outside of the locking housing 1421, thereby disengaging the stop 141 from the lifting member 12 and unlocking the locking state.
[0089] To facilitate the threaded rotation of the operating member 143, the operating member 143 may have an ear-shaped structure for easy manual operation, or the outer wall of the operating member 143 may have a hexagonal nut structure for easy tool operation.
[0090] The stop 141 and the lifting member 12 can be engaged in various ways, such as by snapping, clamping, or by setting a friction area to achieve locking with greater friction.
[0091] Reference Figure 5 , Figure 7 and Figure 8In some embodiments, the lifting member 12 is provided with a locking groove 121 in the radial direction, and the stop member 141 has a stop portion 1412 at the end facing the lifting member 12. The outer contours of the locking groove 121 and the stop portion 1412 are adapted to each other. When the lifting member 12 moves to a preset position along the receiving cavity 111, the stop portion 1412 is engaged in the locking groove 121.
[0092] In this way, by engaging the stop portion 1412 of the stop member 141 with the locking groove 121 of the lifting member 12, the stop member 141 can prevent the lifting member 12 from falling back when it is in the preset position. The structure is simple, easy to implement, and highly reliable.
[0093] Of course, the locking groove 121 and the stop part 1412 are equivalent to a groove and protrusion matching structure. Based on this, the positions of the two can be interchanged. For example, the groove is set on the stop part 141 and the protrusion is set on the lifting part 12.
[0094] In this embodiment, the stop part 1412 and the locking groove 121 cooperate to prevent the lifting member 12 from falling back. The main force-bearing support part is the upper mating surface of the locking groove 121 and the stop part 1412. In order to improve the stability of the support, the upper mating surface of the locking groove 121 and the stop part 1412 can be a plane, and both can be a plane extending in the horizontal direction.
[0095] To allow setting multiple preset positions, refer to... Figure 5 and Figure 7 In some embodiments, there are multiple locking grooves 121, which are spaced apart along the axial direction of the lifting member 12.
[0096] In this way, each locking groove 121 can cooperate with the stop member 141 and has a preset position at a preset height.
[0097] In some embodiments, a plurality of locking grooves 121 may be evenly spaced along the axial direction of the lifting member 12.
[0098] During the lifting process of the lifting member 12, the locking mechanism 14 needs to be in the unlocked state first in order to facilitate the movement of the lifting member 12. The unlocked state of the locking mechanism 14 can be achieved by manual operation or by automatic unlocking through structural design.
[0099] Reference Figure 7 and Figure 8In some embodiments, the locking groove 121 has a guide wall 1211 below along the lifting direction, and the lower surface of the stop portion 1412 has an inclined surface. The guide wall 1211 and the inclined surface gradually slope downward along the direction away from the stop member 141. Furthermore, as the lifting member 12 rises along the receiving cavity 111, the guide wall 1211 and the inclined surface slide relative to each other, which can push the stop portion 1412 out of the locking groove 121.
[0100] Here, due to the inclined arrangement of the guide wall 1211 and the inclined surface, the lifting member 12, which moves vertically upward, generates a horizontal component force at the point where the guide wall 1211 and the inclined surface contact each other. This force drives the stop member 141 to move horizontally and disengage from the locking groove 121. Then, the lifting member 12 can continue to move upward until it lifts the vehicle hood 3 to a predetermined position. The stop member 141 then re-engages with the corresponding locking groove 121 to support the lifting member 12.
[0101] Reference Figure 7 In order to achieve the lifting of the lifting member 12 by gas, in some embodiments, the lifting member 12 includes a lifting rod 122 and a piston 123. The piston 123 is located between the lifting rod 122 and the gas generator 13 and is made of an elastic material. When the gas generator 13 inputs gas into the receiving cavity 111, the receiving cavity 111 has a first pressure, and the piston 123 produces a first deformation, sealing the space where the gas generator 13 and the lifting rod 122 are located, so as to push the lifting rod 122 to move along the receiving cavity 111.
[0102] When the lifting member 12 moves along the receiving cavity 111 to the preset position, there is a second pressure in the receiving cavity 111, and the piston 123 produces a second deformation, connecting the space where the gas generator 13 and the lifting rod 122 are located.
[0103] In this embodiment, the lifting member 12 includes a lifting rod 122 and a piston 123. The lifting rod 122 is used to support and lift the vehicle and the hood 3, and the piston 123 is used to slide in a sealed manner within the receiving cavity 111, thereby using air pressure to drive the lifting rod 122 to move.
[0104] The piston 123 can either maintain a constant, sealable sliding contact with the receiving cavity 111, or it can slide sealably under specific conditions. For example, the piston 123 can be a deformable structure that deforms under specific conditions, switching between sealed and unsealed states. Specifically, the piston 123 can be made of an elastic material. When the gas generator 13 begins to release gas into the receiving cavity 111, the gas pressure inside the receiving cavity 111 increases instantaneously, squeezing the piston 123. The piston 123 deforms under pressure, making a sealable, slidable contact with the inner wall of the receiving cavity 111. At this time, the gas pressure can push the piston 123 and the lifting rod 122 upwards. When the piston 123 and the lifting rod 122 move to the preset position, the stop 141 of the locking mechanism 14 supports the lifting rod 122. At this time, the space occupied by the gas emitted by the gas transmitter in the receiving cavity 111 increases further, the gas pressure decreases to a certain extent, and the deformation of the piston 123 under compression decreases. A certain gap can be left between the piston 123 and the inner wall of the receiving cavity 111. In this way, the gas can be gradually discharged from the gap, reducing the gas pressure in the receiving cavity 111 and reducing unsafe accidents caused by excessive gas pressure.
[0105] Reference Figure 2 and Figure 7 The piston 123 can be a spherical structure. When the piston 123 is not compressed, there is a gap between the piston 123 and the receiving cavity 111. When compressed by a certain gas pressure, the piston 123 can be compressed into an elliptical sphere, sealing the gap between the piston 123 and the receiving cavity 111. When the gas pressure drops to a certain level, the piston 123 gradually returns to a spherical shape, and the gap between the piston 123 and the receiving cavity 111 will reopen.
[0106] For example, when the piston 123 is not compressed, the gap between the piston 123 and the receiving cavity 111 can be 0.1-5 mm. When the piston 123 is a spherical structure and the receiving cavity 111 is a cylindrical structure, the gap can be determined by the ratio of the outer diameter of the piston 123 to the inner diameter of the receiving cavity 111. This ratio is obtained based on the dimensions of the piston 123 in its uncompressed state. For example, the ratio of the outer diameter of the piston 123 to the inner diameter of the receiving cavity 111 is greater than or equal to 0.9 and less than 1; specifically, the ratio of the outer diameter of the piston 123 to the inner diameter of the receiving cavity 111 can be 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, or 0.99.
[0107] Since the vehicle's hood 3 is generally connected to the vehicle frame via hinge 2 or other structural components, when the lifting device 1 in this embodiment lifts the vehicle's hood 3, it may tear the hood 3, hinge 2, vehicle frame, or the connection between the three, which would require the parts to be repaired or replaced, increasing costs.
[0108] To solve the above problems, refer to Figure 3 , Figure 7 and Figure 9 The lifting device 1 in this embodiment of the application also includes a trigger structure 15 disposed on the upper end of the lifting member 12. During the lifting process of the lifting member 12, the trigger structure 15 is used to trigger the target structure.
[0109] The trigger structure 15 is located at the upper end of the lifting member 12. During the lifting process of the lifting member 12, it can contact the corresponding unlocking structure to unlock the connection between the hood 3, hinge 2, or frame. The target structure refers to an unlocking mechanism 4 that can be set at the connection between the hood 3, hinge 2, or frame. Through the lifting action of the lifting member 12, the trigger structure 15 on the lifting member 12 can trigger the aforementioned unlocking mechanism 4.
[0110] The trigger structure 15 can be a structure detachably connected to the upper end of the lifting member 12, or it can be a part of the upper end of the lifting member 12. The trigger structure 15 can have an inclined surface that can cooperate with the unlocking mechanism 4 to be triggered. For example, the trigger structure 15 is a conical structure with an inclined surface in one circumference.
[0111] This application also provides a hood lifting assembly, see reference. Figure 1 and Figure 7 The device includes a hinge 2 and a lifting device 1 as described in the above embodiment. The hinge 2 is used to connect the hood 3. The lifting device 1 is located below the hinge 2. When the gas generator 13 inputs gas into the receiving cavity 111, the lifting member 12 drives the hinge 2 to lift the hood 3.
[0112] The hood lifting assembly of this application includes a hinge 2 and a lifting device 1 as described in the above embodiment. The hinge 2 can be used to connect the hood 3, and the lifting device 1 is disposed below the hinge 2. When needed, the hinge 2 is driven to lift the hood 3. Since the lifting device 1 of the above embodiment is included, it has the same technical effect, that is, it can provide sufficiently stable support in the lifted state without being affected by gas leakage.
[0113] To prevent the lifting device 1 from damaging the hood 3 or hinge 2, and to reduce maintenance costs, refer to... Figure 7 and Figure 9 In some embodiments, the hood lifting assembly further includes an unlocking mechanism 4, which is located on the hinge 2 at a position corresponding to the fastener; during the process of the lifting member 12 driving the hinge 2 to lift the hood 3, the lifting member 12 triggers the unlocking mechanism 4 to unlock the fastener 5 on the hinge 2.
[0114] The position of the fastener on hinge 2 refers to the connection between hinge 2 and the corresponding component via the fastener. This can be the connection between hinge 2 and hood 3, or the connection between hinge 2 and frame. There can also be multiple hinges 2, and the corresponding fastener positions include the connections between multiple hinges 2. In other words, as long as at least one fastener is installed on the connecting chain between hood 3 and frame, and at least one connection is unlocked when the lifting member 12 is lifted, the connecting components between hood 3 and frame can be prevented from being pulled and damaged, reducing maintenance costs.
[0115] Reference Figure 9 The diagram illustrates one implementation of the unlocking mechanism 4, which includes an unlocking housing 41 and an unlocking rod 42. The unlocking housing 41 is fixed to the hinge 2 and has a third hole 411. The first end of the unlocking rod 42 extends out of the unlocking housing 41 through the third hole 411, and the second end faces the fastener 5. During the process of the lifting member 12 driving the hinge 2 to lift the car cover 3, the lifting member 12 pushes the unlocking rod 42 toward the fastener 5 to unlock the fastener 5 on the hinge 2.
[0116] The unlocking housing 41 is fixed to the hinge 2, that is, the unlocking housing 41 can be fixed to the hinge 2, corresponding to the position where the fastener 5 is set on the hinge 2. The interior of the unlocking housing 41 can form a space to accommodate the unlocking rod 42.
[0117] The first end of the unlocking lever 42 extends movably through the third hole 411 and out of the unlocking housing 41, while the second end faces the fastener. This means that the unlocking lever 42 is movably connected within the unlocking housing 41. The first end of the unlocking lever 42 extends out of the unlocking housing 41 through the third hole 411, so the second end of the unlocking lever 42 extending out of the third hole 411 can be triggered, allowing the unlocking lever 42 to move within the unlocking housing 41. Since the second end of the unlocking lever 42 corresponds to the fastener 5, during the movement of the unlocking lever 42, the second end can push the fastener 5 out of its mating fastening hole, thereby unlocking the connection at this point. The hood 3 and the frame can be disconnected from this point. When the hood 3 is lifted, it will not pull on the corresponding connecting structure, reducing the number or extent of component damage and lowering maintenance costs.
[0118] During the process of the lifting member 12 driving the hinge 2 to lift the hood 3, the lifting member 12 pushes the unlocking lever 42 towards the fastener to unlock the fastener 5 on the hinge 2. This means that the lifting action of the lifting member 12 can automatically push the unlocking lever 42, causing it to push the fastener 5 out of the fastening hole. Since the lifting action of the lifting member 12 requires continued vertical upward movement after unlocking, if the unlocking lever 42 is directly set to push the fastener 5 vertically, it may cause the unlocking lever 42 to push the fastener 5 out of the fastening hole and then re-enter the fastening hole, affecting the unlocking effect.
[0119] Therefore, the unlocking lever 42 can be set to push the fastener 5 in a direction that has a certain angle with the vertical direction. For example, the unlocking lever 42 can be set to push the fastener 5 in the horizontal direction, and the fastener 5 unlocks in the horizontal direction.
[0120] Based on this, refer to Figure 7 and Figure 9 In some embodiments, the lifting device 1 further includes a trigger structure 15 disposed on the upper end of the lifting member 12. The trigger structure 15 has a trigger flange 151 that gradually extends outward in the opposite direction of lifting. During the process of the lifting member 12 driving the hinge 2 to lift the car cover 3, the trigger flange 151 slides into contact with the first end of the unlocking rod 42 to push the unlocking rod 42 toward the fastener 5.
[0121] Furthermore, to ensure a smooth unlocking process, refer to... Figure 7 and Figure 9 The lifting component 12 has a conical structure that protrudes outward in a radial direction to form a trigger flange 151, and the first end of the unlocking rod 42 is conical.
[0122] In this way, the trigger structure 15 at the upper end of the lifting component 12 and the first end of the unlocking rod 42 are both tapered structures with inclined contact surfaces. During the lifting process of the lifting component 12, through the sliding cooperation of the two inclined surfaces, a part of the vertical force is converted into a horizontal force. At the same time, it can unlock smoothly and also has a guiding role, making the cooperation process between the components smoother.
[0123] Of course, in this embodiment, the trigger structure 15 can also be detachably connected to the upper end of the lifting member 12. The detachability can be achieved through a threaded connection.
[0124] This application also provides a vehicle, including a hood 3 and a hood lifting assembly as described above, wherein the hinge 2 of the hood lifting assembly is connected to the hood 3.
[0125] In the vehicle of this application embodiment, since the hood lifting assembly of the above embodiment is included, the hood 3 can be lifted, and the same beneficial effect can be achieved. That is, in the lifted state, it is not affected by gas leakage and has sufficiently stable support.
[0126] Moreover, the cooperation between the trigger structure 15 and the unlocking mechanism 4 in the hood lifting assembly can prevent the connecting parts between the hood 3 and the frame from being pulled and damaged, thus reducing maintenance costs.
[0127] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A lifting device (1), characterized in that, include: The shell (11) has an internal cavity (111); The lifting component (12) is at least partially movably disposed within the receiving cavity (111); A gas generator (13) is connected to the housing (11), and its output end is connected to the first end of the receiving cavity (111). When the gas generator (13) inputs gas into the receiving cavity (111), the lifting member (12) is pushed to move along the receiving cavity (111) and extends out of the second end of the receiving cavity (111). A locking mechanism (14), mounted on the housing (11), includes a stop (141) that can pass through the housing (11). When the lifting member (12) moves along the receiving cavity (111) to a preset position, the stop (141) cooperates with the lifting member (12) to prevent the lifting member (12) from moving toward the first end of the receiving cavity (111).
2. The lifting device (1) according to claim 1, characterized in that, The locking mechanism (14) includes a drive assembly (142) which is mounted on the housing (11) and connected to the stop (141). When the lifting member (12) moves along the receiving cavity (111) to the preset position, the drive assembly (142) applies a force toward the lifting member (12) to the stop (141).
3. The lifting device (1) according to claim 2, characterized in that, The drive assembly (142) includes a locking shell (1421) and an elastic member (1422). The locking shell (1421) is connected to the housing (11). The elastic member (1422) is disposed inside the locking shell (1421), with one end abutting against the inner wall of the locking shell (1421) and the other end abutting against the stop member (141). The elastic member (1422) is used to apply an elastic force toward the lifting member (12) to the stop member (141).
4. The lifting device (1) according to claim 3, characterized in that, The housing (11) has a first hole (112) radially formed on it, and the locking housing (1421) has a second hole (14211) corresponding to the first hole (112). The first end of the stop member (141) can pass through the first hole (112) to cooperate with the lifting member (12), and the second end passes through the second hole (14211) and extends out of the locking housing (1421). The stop member (141) has a radial boss (1411) near the first hole (112). The elastic member (1422) is sleeved on the stop member (141), with one end abutting against the inner wall of the locking shell (1421) and the other end abutting against the radial boss (1411).
5. The lifting device (1) according to claim 4, characterized in that, The locking mechanism (14) further includes an operating member (143), the stop member (141) near the second end has an external thread, the operating member (143) has an internal thread, and the operating member (143) is engaged with the external thread of the second end of the stop member (141) extending out of the locking housing (1421).
6. The lifting device (1) according to claim 1, characterized in that, The lifting member (12) is provided with a locking groove (121) in the radial direction, and the stop member (141) has a stop portion (1412) at the end facing the lifting member (12). The outer contours of the locking groove (121) and the stop portion (1412) are adapted to each other. When the lifting member (12) moves to a preset position along the receiving cavity (111), the stop (1412) engages with the locking groove (121).
7. The lifting device (1) according to claim 6, characterized in that, The locking groove (121) has a guide wall (1211) below along the lifting direction, and the lower surface of the stop (1412) has an inclined surface. Along the direction away from the stop (141), the guide wall (1211) and the inclined surface gradually slope downward. As the lifting member (12) rises along the receiving cavity (111), the guide wall (1211) and the inclined surface slide relative to each other to push the stop (1412) out of the locking groove (121).
8. The lifting device (1) according to claim 6, characterized in that, There are multiple locking grooves (121), which are arranged at intervals along the axial direction of the lifting member (12).
9. The lifting device (1) according to claim 1, characterized in that, The lifting component (12) includes a lifting rod (122) and a piston (123), the piston (123) being located between the lifting rod (122) and the gas generator (13) and being made of an elastic material. When the gas generator (13) inputs gas into the receiving cavity (111), the receiving cavity (111) has a first pressure, the piston (123) produces a first deformation, sealing the space where the gas generator (13) and the lifting rod (122) are located, so as to push the lifting rod (122) to move along the receiving cavity (111); When the lifting member (12) moves along the receiving cavity (111) to a preset position, there is a second pressure in the receiving cavity (111), the piston (123) produces a second deformation, and connects the space where the gas generator (13) and the lifting rod (122) are located.
10. The lifting device (1) according to any one of claims 1 to 9, characterized in that, The lifting device (1) further includes a trigger structure (15) disposed on the upper end of the lifting member (12). During the lifting process of the lifting member (12), the trigger structure (15) is used to trigger the target structure.
11. A hood lifting assembly, characterized in that, include: Hinges (2) are used to connect the hood (3); The lifting device (1) according to any one of claims 1 to 10 is disposed below the hinge (2), and when the gas generator (13) inputs gas into the receiving cavity (111), the lifting member (12) drives the hinge (2) to lift the car cover (3).
12. The hood lifting assembly according to claim 11, characterized in that, It also includes an unlocking mechanism (4), which is disposed on the hinge (2) at a position corresponding to the fastener (5); During the process of the lifting member (12) driving the hinge (2) to lift the hood (3), the lifting member (12) triggers the unlocking mechanism (4) to unlock the fastener (5) on the hinge (2).
13. The hood lifting assembly according to claim 12, characterized in that, The unlocking mechanism (4) includes an unlocking shell (41) and an unlocking rod (42). The unlocking shell (41) is fixed to the hinge (2). The unlocking shell (41) has a third hole (411). The first end of the unlocking rod (42) extends through the third hole (411) and out of the unlocking shell (41), while the second end faces the fastener (5). During the process of the lifting member (12) driving the hinge (2) to lift the hood (3), the lifting member (12) pushes the unlocking lever (42) toward the fastener to unlock the fastener (5) on the hinge (2).
14. The hood lifting assembly according to claim 13, characterized in that, The lifting device (1) further includes a trigger structure (15) disposed on the upper end of the lifting member (12). The trigger structure (15) has a trigger flange (151) that gradually extends outward in the opposite direction of lifting. During the process of the lifting member (12) driving the hinge (2) to lift the car cover (3), the trigger flange (151) slides in contact with the first end of the unlocking rod (42) to push the unlocking rod (42) toward the fastener (5).
15. A vehicle, characterized in that, include: Car hood (3); The hood lifting assembly according to any one of claims 11 to 14, wherein the hinge (2) of the hood lifting assembly is connected to the hood (3).