Drive device for a vehicle hatch and vehicle

Abstract

The application discloses a driving device for a vehicle hatch and a vehicle. The driving device comprises a first connecting piece, a second connecting piece, an elastic piece, a buffer piece, a piston and a connecting rod. The first connecting piece is adapted to be connected with a vehicle body. The second connecting piece is adapted to be connected with a vehicle hatch. The elastic piece is arranged between the first connecting piece and the second connecting piece. The buffer piece is connected with one of the first connecting piece and the second connecting piece. The buffer piece is internally provided with a buffer cavity. The piston is movably arranged in the buffer cavity and is adapted to generate a damping force to hinder the hatch from being opened when the hatch is opened. One end of the connecting rod is connected with the piston, and the other end of the connecting rod is connected with the other one of the first connecting piece and the second connecting piece. The driving device drives the second connecting piece to move through the cooperation of the elastic piece, the buffer piece and the piston, thereby controlling the opening or closing of the hatch. The hatch is opened at a relatively gentle speed, and the safety is high.

Description

Drive mechanism for vehicle hatch and vehicle Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to a drive device for a vehicle hatch and a vehicle. Background Technology

[0002] In existing technology, the device that drives the opening of a vehicle's luggage compartment typically uses a combination of springs and torsion springs, with the torsion spring deformation generating driving force to control the opening of the lid. However, using this method to open the luggage compartment has several drawbacks. During the opening phase, the torsion spring has maximum force, causing the lid to spring up quickly, which can easily injure people. At the end of the opening, the lid is prone to shaking and lacks stability. Furthermore, when the lid is heavy, the torsion spring is prone to breakage after prolonged use, creating a safety hazard. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a drive device for a vehicle hatch. According to the invention, the drive device, through the cooperation of an elastic element, a buffer element, and a piston, drives a second connecting element to move, thereby driving the hatch to open or close the vehicle's luggage compartment. During the hatch opening process, the piston and buffer element cooperate to provide damping force, making the hatch opening process smoother and improving the safety when the hatch is opened.

[0004] The present invention also proposes a vehicle including the above-described drive device.

[0005] The drive device according to the present invention includes a first connector, a second connector, an elastic element, a buffer element, a piston, and a connecting rod. The first connector is adapted to be connected to a vehicle body; the second connector is adapted to be connected to the vehicle hood; the elastic element is disposed between the first connector and the second connector; the buffer element is connected to one of the connections between the first connector and the second connector, and the buffer element has a buffer cavity inside; the piston is movably disposed in the buffer cavity and adapted to generate a damping force that hinders the opening of the hood when the hood is opened; one end of the connecting rod is connected to the piston, and the other end of the connecting rod is connected to the other of the connections between the first connector and the second connector.

[0006] According to the present invention, the drive device has a first connecting member on the vehicle body. The first connecting member can be used to fix one end of the elastic member and one end of the buffer member. The drive device can also have a second connecting member spaced apart from the first connecting member and connected to the other end of the elastic member. The second connecting member can be used to connect with the vehicle's hatch to realize the connection between the elastic member and the hatch. When the drive device provides driving force, the elastic member can transmit its elastic force to the hatch through the second connecting member by its own deformation, so as to control the opening or closing of the hatch. A buffer cavity can be formed inside the buffer member, which can contain high-pressure gas. The drive device can provide damping force when the hatch is opened by cooperating with the piston through the high-pressure gas in the buffer cavity. Specifically, the piston is movably disposed in the buffer cavity, and a connecting rod connected to the piston is provided on the piston. The end of the connecting rod away from the piston is connected to the second connecting member. When the hatch is opened, the elastic member deforms and recovers, applying a pulling force to the second connecting member. The second connecting member can drive the hatch to open during the movement. At this time, since the piston is connected to the second connecting member through the connecting rod, the piston will move towards the first connecting member under the drive of the second connecting member. When the piston moves towards the first connecting member, the gas in the buffer chamber will hinder the piston movement. The slow piston movement speed will slow down the movement speed of the second connecting member, thereby slowing down the opening speed of the hatch. This avoids the hatch popping up too fast and causing injury due to the excessive force output by the elastic element in the initial stage of the hatch opening process, thus improving the safety of the hatch and the control capability of the drive device over the hatch.

[0007] According to one embodiment of the present invention, the piston is disposed in the buffer cavity and divides the buffer cavity into a first cavity and a second cavity, and the piston is provided with an air passage that connects the first cavity and the second cavity.

[0008] According to one embodiment of the present invention, the air passage includes a first air passage and a second air passage, the first air passage being normally open, and the second air passage being selectively open or closed; when the piston moves toward the first connector and drives the second connector to open the vehicle hood, the second air passage is closed; when the piston moves toward the second connector and drives the second connector to close the vehicle hood, the second air passage is open.

[0009] According to one embodiment of the present invention, the driving device further includes a baffle disposed on the side of the piston facing the first connector, the baffle having a deformable ear formed thereon, the ear being adapted to block the second air passage when the piston moves toward the first connector, and the ear being adapted to open the second air passage when the piston moves toward the second connector.

[0010] According to one embodiment of the present invention, the driving device further includes a piston rod, one end of which is connected to the side of the piston facing the first connector, and the other end of which passes through the first connector and extends in a direction away from the first connector.

[0011] According to one embodiment of the present invention, the cross-sectional area of ​​the piston rod is greater than the cross-sectional area of ​​the connecting rod.

[0012] According to one embodiment of the present invention, the driving device further includes a third connector, the third connector being sleeved on one end of the piston rod facing the piston and defining a third cavity between the third connector and the piston, the third connector forming a second cavity between the third connector and the first connector, the connecting rod passing through the piston and connected to the third connector, and a third air passage forming on the third connector to communicate the third cavity and the second cavity.

[0013] According to one embodiment of the present invention, the elastic element is sleeved on at least a portion of the outer periphery of the buffer element, and the two ends of the elastic element are respectively connected to the first connecting element and the second connecting element.

[0014] According to one embodiment of the present invention, the buffer extends in the width direction of the vehicle body.

[0015] According to one embodiment of the present invention, the drive device further includes a dust cover covering the portion of the connecting rod that passes through the buffer and connects to the second connecting member.

[0016] The vehicle according to the present invention is briefly described below.

[0017] The vehicle according to the present invention includes the drive device described in the above embodiments. Because the vehicle according to the present invention is equipped with the drive device described in the above embodiments, when the vehicle needs to open the luggage compartment, the second connecting member can be moved by the cooperation of the buffer, elastic element, and piston within the drive device, thereby driving the luggage compartment lid to open. Furthermore, the piston can provide damping force when the lid opens, making the opening process smooth and preventing the lid from popping up too quickly, which could cause injury, thus improving vehicle safety. At the same time, the use of the elastic element and buffer element in the drive device can extend its service life and reduce vehicle replacement and maintenance costs.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 is a structural diagram of a driving device according to an embodiment of the present invention;

[0021] Figure 2 is an exploded view of a drive device according to an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the baffle when the piston moves toward the first connecting member according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the baffle when the piston moves toward the second connector according to an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of the state of the drive device when the hatch is opened according to an embodiment of the present invention;

[0025] Figure 6 is a schematic diagram of the state of the drive device when the hatch is closed according to an embodiment of the present invention;

[0026] Figure 7 is an assembly diagram of the connecting rod and piston rod with the piston according to an embodiment of the present invention.

[0027] Figure label:

[0028] Drive unit 1;

[0029] First connector 11, second connector 12, elastic element 13;

[0030] Buffer component 14, first cavity 141, second cavity 142;

[0031] Piston 15, first air passage 151, second air passage 152;

[0032] Connecting rod 16, baffle 17, ear 171, piston rod 18;

[0033] The components include a third connector 101, a connecting part 1011, a limiting part 1012, a limiting protrusion 1013, a third cavity 102, a third air passage 103, and a dust cover 104. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In existing technology, the device for opening a vehicle's luggage compartment typically uses a combination of springs and torsion springs, with the torsion spring deformation generating a driving force to control the opening of the lid. However, using this method to open the luggage compartment has several drawbacks. During the opening phase, the torsion spring force is at its maximum, causing the lid to spring up quickly, which can easily injure people. At the end of the opening, the lid is prone to shaking, resulting in poor stability. Furthermore, when the luggage compartment is heavy, the torsion spring is prone to breakage after prolonged use, creating a safety hazard.

[0036] The driving device according to an embodiment of the present invention will now be described with reference to Figures 1-7.

[0037] The drive device 1 according to the present invention includes a first connector 11, a second connector 12, an elastic member 13, a buffer member 14, a piston 15, and a connecting rod 16. The first connector 11 is adapted to be connected to a vehicle body; the second connector 12 is adapted to be connected to a vehicle hood; the elastic member 13 is disposed between the first connector 11 and the second connector 12 respectively; the buffer member 14 is connected to one of the connections of the first connector 11 and the second connector 12, and a buffer cavity is provided inside the buffer member 14; the piston 15 is movably disposed in the buffer cavity and is adapted to generate a damping force that hinders the opening of the hood when it is opened; one end of the connecting rod 16 is connected to the piston 15, and the other end of the connecting rod 16 is connected to the other of the connections of the first connector 11 and the second connector 12.

[0038] According to the present invention, the drive device 1 has a first connecting member 11 on the vehicle body. The first connecting member 11 can be used to fix one end of the elastic member 13 and one end of the buffer member 14. The drive device 1 can also have a second connecting member 12 spaced apart from the first connecting member 11 and connected to the other end of the elastic member 13. The second connecting member 12 can be used to connect with the vehicle's hatch to realize the connection between the elastic member 13 and the hatch. When the drive device 1 provides driving force, the elastic member 13 can transmit its elastic force to the hatch through the second connecting member 12 by its own deformation, so as to control the opening or closing of the hatch. A buffer cavity can be formed inside the buffer member 14. The buffer cavity can contain high-pressure gas. The drive device 1 can provide damping force when the hatch is opened by the cooperation between the high-pressure gas in the buffer cavity and the piston 15.

[0039] Specifically, piston 15 is movably disposed within the buffer chamber, and a connecting rod 16 is provided on piston 15, with the end of connecting rod 16 away from piston 15 connected to second connecting member 12. When the hatch is opened, elastic member 13 deforms and recovers, applying tension to second connecting member 12. Second connecting member 12 can drive the hatch to open during its movement. At this time, since piston 15 is connected to second connecting member 12 through connecting rod 16, piston 15 will move towards first connecting member 11 under the drive of second connecting member 12. When piston 15 moves towards first connecting member 11, the gas in the buffer chamber will hinder the movement of piston 15. The slow movement speed of piston 15 will slow down the movement speed of second connecting member 12, thus slowing down the opening speed of hatch. This avoids the hatch from popping up too quickly and causing injury due to excessive force output by elastic member 13 in the initial stage of hatch opening, thus improving hatch safety and the control capability of drive device 1 over hatch.

[0040] According to one embodiment of the present invention, a piston 15 is disposed within a buffer chamber, dividing the buffer chamber into a first chamber 141 and a second chamber 142. An air passage is provided on the piston 15 connecting the first chamber 141 and the second chamber 142. Since the movement of the piston 15 is hindered by the high-pressure gas inside the buffer chamber, the structure of the piston 15 affects the control of the hatch by the drive device 1. The drive device 1 provides an air passage through the piston 15, allowing the buffer chamber to be divided into the first chamber 141 and the second chamber 142 when the hatch is opened. When the second connecting member 12 moves towards the first connecting member 11, the piston 15 also moves towards the first connecting member 11. The space of the first chamber 141 increases, and the space of the second chamber 142 decreases. The gas inside the second chamber 142 hinders the movement of the piston 15, and the decrease in the piston 15's movement speed slows down the hatch opening process. Simultaneously, some of the gas in the second chamber 142 can flow into the first chamber 141 through the air passage on the piston 15. When the hatch is fully opened, the piston 15 moves to a preset position, and the air pressure in the first chamber 141 and the second chamber 142 remains balanced. The design of the piston 15 provides damping force during the hatch opening process, preventing injury caused by the hatch opening too quickly and improving the safety of the hatch.

[0041] According to one embodiment of the present invention, the air passage includes a first air passage 151 and a second air passage 152. The first air passage 151 is normally open, and the second air passage 152 can be selectively opened or closed. When the piston 15 moves toward the first connector 11 and drives the second connector 12 to open the vehicle hood, the second air passage 152 is closed; when the piston 15 moves toward the second connector 12 and drives the second connector 12 to close the vehicle hood, the second air passage 152 is open. Since the air passage is the channel for gas flow between the first cavity 141 and the second cavity 142, the structure of the air passage will affect the gas flow when the piston 15 moves. The drive unit 1 has a first air passage 151 and a second air passage 152 on the piston 15. The first air passage 151 is normally open, meaning that regardless of the movement of the piston 15, the first air passage 151 always connects the first chamber 141 and the second chamber 142. The first air passage 151 ensures that the first chamber 141 and the second chamber 142 in the buffer chamber remain balanced after the piston 15 moves to a preset position. The second air passage 152 can be selectively opened or closed, controlling the flow rate of the gas in the buffer chamber to control the movement speed of the piston 15. Specifically, when the piston 15 moves toward the first connecting member 11, the second air passage 152 is closed, the gas flow rate in the buffer chamber is low, the movement speed of the piston 15 is slow, and the hatch opens slowly, reducing the risk of injury. When the piston 15 moves toward the second connecting member 12, the second air passage 152 is open, the gas flow rate in the buffer chamber is fast, the resistance experienced by the piston 15 is low, the force required to manually close the hatch is small, and the user experience is good. The air duct configuration improves the drive unit 1's control over the opening and closing of the hatch.

[0042] According to one embodiment of the present invention, as shown in Figures 3 and 4, the drive device 1 further includes a baffle 17 disposed on the side of the piston 15 facing the first connector 11. The baffle 17 has a deformable ear 171 formed on it. The ear 171 is adapted to block the second air passage 152 when the piston 15 moves towards the first connector 11, and to open the second air passage 152 when the piston 15 moves towards the second connector 12. Since the second air passage 152 can control the flow rate of gas in the buffer chamber, the configuration of the drive device 1 affects the selectivity of the second air passage 152. The drive device 1 has a baffle 17 disposed on the side of the piston 15 facing the first connector 11, and the baffle 17 has a deformable ear 171 formed on it. When piston 15 moves toward the first connector 11, airflow flows from the second cavity 142 to the first cavity 141. At this time, the ear 171 can be pressed against the port of the second air passage 152, and airflow can only flow into the first cavity 141 through the first air passage 151. The obstruction of the ear 171 slows down the airflow speed. The piston 15 experiences greater resistance and moves at a slower speed. The movement speed of the piston 15 limits the speed of the hatch, making the hatch opening process slow and smooth, thus improving the safety when the hatch is opened. When piston 15 moves toward the second connector 12, airflow flows from the first cavity 141 to the second cavity 142. At this time, the ear 171 is deformed by the impact of the airflow, thereby opening the port of the second air passage 152. Airflow can enter the second cavity 142 through the first air passage 151 and the second air passage 152. The overall airflow speed is fast, the resistance experienced by piston 15 is small, and the force required to close the hatch is small, improving the user experience when closing the hatch.

[0043] According to one embodiment of the present invention, the driving device 1 further includes a piston rod 18, one end of which is connected to the side of the piston 15 facing the first connecting member 11, and the other end of which passes through the first connecting member 11 and extends in a direction away from the first connecting member 11. The driving device 1 has a piston rod 18 on the other side of the piston 15. After being connected to the piston 15, the piston rod 18 passes through the first connecting member 11. When the piston 15 moves, the connection between the piston rod 18 and the piston 15 ensures the stability of the piston 15 during movement.

[0044] According to one embodiment of the present invention, the cross-sectional area of ​​the piston rod 18 is larger than the cross-sectional area of ​​the connecting rod 16. The driving device 1 controls the cross-sectional area of ​​the piston rod 18 to be larger than the cross-sectional area of ​​the connecting rod 16. Since the buffer chamber is filled with high-pressure gas, the high-pressure gas will push the piston 15 toward the first connecting member 11 when no external force is applied. After the driving device 1 is assembled with the hatch, when the weight of the hatch is relatively large or the force provided by the deformation recovery of the elastic member 13 is insufficient, the buffer member 14 will apply a partial pulling force to the movement of the second connecting member 12 by automatically pushing the piston 15 toward the first connecting member 11 through the high-pressure gas inside the buffer chamber, thereby ensuring that the driving device 1 can open the hatch normally.

[0045] According to one embodiment of the present invention, the driving device 1 further includes a third connecting member 101. The third connecting member 101 is sleeved on the end of the piston rod 18 facing the piston 15 and defines a third cavity 102 between the piston rod 18 and the piston 15. A second cavity 142 is formed between the third connecting member 101 and the first connecting member 11. A connecting rod 16 passes through the piston 15 and is connected to the third connecting member 101. A third air passage 103 is formed on the third connecting member 101, connecting the third cavity 102 and the second cavity 142. Since the connecting rod 16 and the piston rod 18 are respectively connected to the piston 15, the connection method between the connecting rod 16, the piston rod 18, and the piston 15 will affect the stability of the connection. The driving device 1 also provides a third connecting member 101, which is sleeved on the end of the piston rod 18 facing the piston 15. During assembly, the connecting rod 16 can pass through the piston 15 and be connected to the third connecting member 101. The provision of the third connecting member 101 improves the stability of the cooperation between the piston rod 18, the connecting rod 16, and the piston 15. Furthermore, the third connector 101 disposed between the piston 15 and the first connector 11 can define a third cavity 102. A third air passage 103 can be provided in at least a portion of the third connector 101. The third air passage 103 can be a normally open air passage, and the third air passage 103 can avoid the third connector 101 from obstructing the gas flow.

[0046] In some embodiments, the third connector 101 can be divided into a connecting portion 1011 and a limiting portion 1012. A radially extending limiting protrusion 1013 can also be provided on the piston rod 18. The connecting portion 1011 is used to connect the piston rod 18 and the connecting rod 16. The limiting portion 1012 can abut against the inner wall of the buffer cavity and the limiting protrusion 1013 provided on the piston rod 18 to ensure the stability of the piston rod 18 assembly.

[0047] According to one embodiment of the present invention, an elastic element 13 is sleeved on at least a portion of the outer periphery of the buffer element 14, and both ends of the elastic element 13 are connected to the first connecting element 11 and the second connecting element 12, respectively. Since both the elastic element 13 and the buffer element 14 are disposed between the first connecting element 11 and the second connecting element 12, the positions of the buffer element 14 and the elastic element 13 affect the overall compactness of the drive device 1. The drive device 1 sleeves the elastic element 13 on the outer periphery of the buffer element 14, and both ends of the elastic element 13 are fixed to the first connecting element 11 and the second connecting element 12, respectively. The arrangement of the elastic element 13 and the buffer element 14 ensures that the forces provided by the elastic element 13 and the buffer element 14 are on the same straight line, ensuring the stability of the second connecting element 12 during movement, and also improving the compactness of the drive device 1.

[0048] According to one embodiment of the present invention, the buffer member 14 extends in the width direction of the vehicle body. Since the drive unit 1 is mounted on the vehicle body, the layout design of the drive unit 1 affects its assembly. The drive unit 1 controls the buffer member 14 to extend in the width direction of the vehicle body. Similarly, the elastic member 13 also extends in the width direction of the vehicle body. The first connecting member 11 and the second connecting member 12 are spaced apart in the width direction of the vehicle body. The layout design of the drive unit 1 in the width direction saves more space than its arrangement in other directions and does not interfere with the hatch.

[0049] According to one embodiment of the present invention, the drive device 1 further includes a dust cover 104, which covers the portion of the connecting rod 16 that passes through the buffer member 14 and is connected to the second connecting member 12. The drive device 1 provides a dust cover at the portion of the connecting rod 16 that protrudes from the buffer cavity to prevent external dust from adhering to the connecting rod 16. Similarly, the portion of the piston rod 18 that protrudes from the buffer cavity can also be fitted with a dust cover according to actual conditions.

[0050] The vehicle according to the present invention is briefly described below.

[0051] The vehicle according to the present invention includes the drive unit 1 in the above embodiments. Since the vehicle according to the present invention is equipped with the drive unit 1 in the above embodiments, when the vehicle needs to open the luggage compartment, the second connecting member 12 can be moved by the cooperation of the buffer member 14, the elastic member 13, and the piston 15 within the drive unit 1, thereby driving the luggage compartment lid to open. Furthermore, the piston 15 can provide damping force when the lid opens, making the opening process smooth and preventing the lid from popping up too quickly, which could cause injury, thus improving vehicle safety. At the same time, the drive unit 1, through the cooperation of the elastic member 13 and the buffer member 14, can extend its service life and reduce the vehicle's replacement and maintenance costs.

[0052] 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," "clockwise," "counterclockwise," "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 do not 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.

[0053] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0054] In the description of this invention, "a plurality of" means two or more.

[0055] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0056] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] 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 drive device for a vehicle hatch, characterized in that, include: A first connector adapted to be connected to a vehicle body; a second connector adapted to be connected to a vehicle hood; an elastic member disposed between the first connector and the second connector; and a buffer member connected to one of the first connector and the second connector, wherein the buffer member has a buffer cavity inside. A piston, movably disposed within the buffer chamber and adapted to generate a damping force that hinders the opening of the hatch when it is opened; a connecting rod, one end of which is connected to the piston, and the other end of which is connected to another of the first and second connecting members; the piston is disposed within the buffer chamber and divides the buffer chamber into a first cavity and a second cavity, and the piston is provided with an air passage connecting the first cavity and the second cavity; the air passage includes a first air passage and a second air passage, the first air passage being normally open, and the second air passage being selectively open or closed; when the piston moves toward the first connecting member and drives the second connecting member to open the vehicle hatch, the second air passage is closed; when the piston moves toward the second connecting member and drives the second connecting member to close the vehicle hatch, the second air passage is open.

2. The drive device for a vehicle hatch according to claim 1, characterized in that, Also includes: A baffle is disposed on the side of the piston facing the first connector. A deformable ear is formed on the baffle. The ear is adapted to block the second air passage when the piston moves toward the first connector, and the ear is adapted to open the second air passage when the piston moves toward the second connector.

3. The drive device for a vehicle hatch according to claim 1, characterized in that, Also includes: A piston rod, one end of which is connected to the side of the piston facing the first connector, and the other end of which passes through the first connector and extends in a direction away from the first connector.

4. The drive device for a vehicle hatch according to claim 3, characterized in that, The cross-sectional area of ​​the piston rod is larger than that of the connecting rod.

5. The drive device for a vehicle hatch according to claim 4, characterized in that, Also includes: A third connector is sleeved on the end of the piston rod facing the piston and defines a third cavity between the third connector and the piston. A second cavity is formed between the third connector and the first connector. The connecting rod passes through the piston and is connected to the third connector. A third air passage is formed on the third connector to connect the third cavity and the second cavity.

6. The drive device for a vehicle hatch according to claim 1, characterized in that, The elastic element is sleeved on at least a portion of the outer periphery of the buffer element, and both ends of the elastic element are connected to the first connecting element and the second connecting element, respectively.

7. The drive device for a vehicle hatch according to claim 6, characterized in that, The buffer extends in the width direction of the vehicle body.

8. The drive device for a vehicle hatch according to claim 1, characterized in that, Also includes: A dust cover that covers the portion of the connecting rod that passes through the buffer and connects to the second connecting member.

9. A vehicle, characterized in that, Includes the drive device described in any one of claims 1-8.

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