Buffer mechanism and vehicle

Abstract

The utility model relates to a buffer mechanism and a vehicle. The buffer mechanism comprises a guide rod, a first elastic piece and a second elastic piece. The guide rod is arranged on the vehicle body; the first elastic piece is sleeved outside the guide rod; the guide rod is sleeved with the second elastic piece, and the telescopic direction of the second elastic piece is consistent with the telescopic direction of the first elastic piece; the elastic coefficient of the first elastic piece is larger than that of the second elastic piece. In the application, different impact forces in the running process of the vehicle are absorbed through the first elastic piece and the second elastic piece with different elastic coefficients, so that the arrangement of the buffer mechanism can enable the vehicle to adapt to the impact forces with different strengths, thereby being beneficial to improving the stability and comfort of the vehicle in the running process so as to improve the experience feeling of a driver and passengers. Therefore, by means of the arrangement, a progressive buffering mechanism can be formed, so that the buffering mechanism can meet different use working conditions of the vehicle, and the comprehensive performance of the vehicle can be effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicles, and particularly relates to a buffering mechanism and a vehicle. BACKGROUND

[0002] The buffering mechanism is a buffering component in a vehicle suspension system. However, the rigidity of the buffering mechanism in the prior art is usually not adjustable, and the optimal rigidity matching value required by different working conditions is usually different during the use of the vehicle, so that the use conditions of the vehicle cannot be met, and the comprehensive performance of the vehicle is affected. Therefore, how to make the buffering mechanism meet different use conditions of the vehicle to improve the comprehensive performance of the vehicle is a technical problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0003] The application provides a buffering mechanism and a vehicle to solve the technical problem of how to make the buffering mechanism meet different use conditions of the vehicle to improve the comprehensive performance of the vehicle.

[0004] To solve the above technical problem, one technical scheme adopted by the application is: a buffering mechanism arranged on a vehicle body to buffer the vehicle, comprising: a guide rod arranged on the vehicle body; a first elastic member sleeved on the guide rod; and a second elastic member sleeved on the guide rod, and the extension direction of the second elastic member is consistent with the extension direction of the first elastic member; wherein the elastic coefficient of the first elastic member is greater than the elastic coefficient of the second elastic member.

[0005] According to an embodiment of the application, the first elastic member and the second elastic member are arranged along the axial direction of the guide rod.

[0006] According to an embodiment of the application, the first elastic member comprises a first elastic body and a first support plate, and the first support plate is arranged at the first end of the first elastic body; the second elastic member comprises a second elastic body and a second support plate, and the second support plate is arranged at the first end of the second elastic body; and the first support plate and the second support plate abut to connect the first elastic member and the second elastic member in series along the axial direction.

[0007] According to an embodiment of the application, the buffering mechanism further comprises: an intermediate support arranged between the first support plate and the second support plate; wherein the first support plate and the second support plate respectively abut the two end surfaces of the intermediate support along the axial direction of the guide rod.

[0008] According to an embodiment of the application, the first elastic body comprises a first spring, and the second elastic body comprises a second spring, and the inner diameter of the first spring is greater than the inner diameter of the second spring.

[0009] According to an embodiment of the present application, one side of the intermediate support towards the first support plate is formed with a first boss, and the first boss and the first support plate abut against each other; one side of the intermediate support towards the second support plate is formed with a second boss, and the second boss and the second support plate abut against each other.

[0010] According to an embodiment of the present application, the guide rod comprises: a first guide part at one end of the guide rod; a second guide part at the other end of the guide rod; and a third guide part between the first guide part and the second guide part, wherein the outer diameter of the third guide part is smaller than the outer diameter of the first guide part and the second guide part.

[0011] According to an embodiment of the present application, the first elastic member comprises a first spring, and the second elastic member comprises a second spring, wherein the inner diameter of the first spring is larger than the inner diameter of the second spring, and the second spring is sleeved in the first spring.

[0012] According to an embodiment of the present application, the two ends of the guide rod are respectively formed with a first stop part and a second stop part for stopping the first elastic member and / or the second elastic member.

[0013] According to an embodiment of the present application, the buffer mechanism further comprises: a swing arm connected with the first stop part or the second stop part, and the swing arm is used for connecting a vehicle body.

[0014] To solve the above technical problems, the present application adopts another technical scheme: comprising a vehicle body and a buffer mechanism as described above, wherein the buffer mechanism is arranged on the vehicle body.

[0015] The buffer mechanism of the present application is arranged on the vehicle body to buffer the vehicle. The buffer mechanism comprises a guide rod, a first elastic member and a second elastic member. The guide rod is arranged on the vehicle body; the first elastic member is sleeved on the guide rod; the second elastic member is sleeved on the guide rod, and the extension direction of the second elastic member is consistent with the extension direction of the first elastic member; and the elastic coefficient of the first elastic member is greater than the elastic coefficient of the second elastic member. In the present application, the first elastic member and the second elastic member with different elastic coefficients are used to absorb impact forces of different sizes during the driving of the vehicle, so that the arrangement of the buffer mechanism can make the vehicle adapt to impacts of different intensities, thereby improving the stability and comfort of the vehicle during driving and improving the experience of the driver and passengers. Therefore, the above arrangement can form a progressive buffering mechanism, so that the buffer mechanism can meet different use conditions of the vehicle, thereby effectively improving the comprehensive performance of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only show some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings are within the protection scope of the present application.

[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of the buffer mechanism of the present application;

[0018] Figure 2 is a schematic diagram of the structure of the first elastic member in an embodiment of the buffer mechanism of the present application;

[0019] Figure 3 is a schematic diagram of the structure of the second elastic member in an embodiment of the buffer mechanism of the present application;

[0020] Figure 4 is a schematic diagram of the exploded structure of an embodiment of the buffer mechanism of the present application;

[0021] Figure 5 is a schematic diagram of the structure of the first face of the intermediate support in an embodiment of the buffer mechanism of the present application;

[0022] Figure 6 is a schematic diagram of the structure of the second face of the intermediate support in an embodiment of the buffer mechanism of the present application;

[0023] Figure 7 is a schematic diagram of the nested structure of the first elastic member and the second elastic member in another embodiment of the buffer mechanism of the present application. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following will make a detailed description of the specific embodiments of the present application in combination with the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present application.

[0025] In this document, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive or alternative to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the present application, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0027] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] The buffer mechanism in the present application can be applied to related structures of vehicles, rail transit or industrial equipment, etc. In the present application, the application of the buffer mechanism in the vehicle will be taken as an example for description.

[0029] Please refer to Figure 1 , Figure 1 is the overall structure schematic diagram of an embodiment of the buffer mechanism of the present application.

[0030] In one aspect of the present application, a buffer mechanism 10 is provided. The buffer mechanism 10 is arranged on the vehicle body for buffering the vehicle. Wherein, the buffer mechanism 10 comprises a guide rod 11, a first elastic member 12 and a second elastic member 13. The guide rod 11 is arranged on the vehicle body; the first elastic member 12 is sleeved on the guide rod 11; the second elastic member 13 is sleeved on the guide rod 11, and the extension direction of the second elastic member 13 is consistent with the extension direction of the first elastic member 12; wherein, the elastic coefficient of the first elastic member 12 is greater than the elastic coefficient of the second elastic member 13.

[0031] From the above structure, in the present application, the first elastic member 12 and the second elastic member 13 with different elastic coefficients are used to absorb different impact forces in the process of vehicle driving, so that the arrangement of the buffer mechanism 10 can make the vehicle adapt to different impact strength, thereby being beneficial to improve the stability and comfort of the vehicle in the process of driving, so as to improve the experience of the driver and passenger. Therefore, the above arrangement can form a progressive buffering mechanism, so that the buffer mechanism 10 can meet different use conditions of the vehicle, thereby effectively improving the comprehensive performance of the vehicle.

[0032] Specifically, the elastic coefficient of the first elastic member 12 is greater than the elastic coefficient of the second elastic member 13, that is, the stiffness of the first elastic member 12 is greater than the stiffness of the second elastic member 13. When the vehicle is subjected to impact forces of different sizes during driving, the second elastic member 13 with smaller stiffness can respond to smaller impact forces to effectively absorb these smaller impact forces. When a larger impact is encountered, the second elastic member 13 with smaller stiffness will be wound and the second elastic member 13 will no longer play a buffering role, but the first elastic member 12 with greater stiffness will absorb the larger impact force, so that the buffering mechanism 10 can meet different use conditions of the vehicle to improve the overall performance of the vehicle.

[0033] Secondly, the guide rod 11 is provided, on the one hand, the guide rod 11 can support the first elastic member 12 and the second elastic member 13 to improve the stability of the first elastic member 12 and the second elastic member 13; on the other hand, the guide rod 11 can be connected with the vehicle to enable the buffering mechanism 10 to directly absorb and buffer the impact generated during driving of the vehicle, which not only protects the remaining parts in the vehicle, but also improves the comfort and safety of the vehicle driving. Moreover, since the first elastic member 12 and the second elastic member 13 are coaxially sleeved on the guide rod 11, when the vehicle is subjected to an impact, the guide rod 11 can guide the first elastic member 12 and the second elastic member 13 to compress and stretch along the axial direction of the guide rod 11, thereby improving the phenomenon of deviation and distortion of the first elastic member 12 and the second elastic member 13 during force application, and improving the reliability and stability of the first elastic member 12 and the second elastic member 13.

[0034] In addition, the extension direction of the second elastic member 13 is consistent with the extension direction of the first elastic member 12, and during driving of the vehicle, the first elastic member 12 and the second elastic member 13 can absorb impact forces of different sizes in the same direction, thereby realizing a progressive buffering mechanism, and supporting and balancing the vehicle in the same direction, which is beneficial to improve the stability of the vehicle during driving.

[0035] It should be noted that the elastic coefficient of the elastic member, also known as the stiffness coefficient of the elastic member, is the force required by the elastic member when the deformation amount occurs. When the elastic coefficient of the elastic member is greater, the elastic member is less likely to be compressed or stretched, and when the elastic coefficient of the elastic member is smaller, the elastic member is more likely to deform.

[0036] Wherein, the elastic coefficient of the first elastic member 12 is k1, and the coefficient of the second elastic member 13 is k2. When the impact force on the vehicle is , the impact force is absorbed by the second elastic member 13; and when When the second elastic member 13 is in the parallel state, the impact force is absorbed by the first elastic member 12, wherein x is the maximum deformation distance of the second elastic member 13.

[0037] Please refer to Figure 1 Please refer to Figure 2 and Figure 3 , Figure 2 is a structural schematic diagram of the first elastic member in an embodiment of the buffer mechanism of the present application; Figure 3 is a structural schematic diagram of the second elastic member in an embodiment of the buffer mechanism of the present application.

[0038] In some embodiments of the present application, the first elastic member 12 and the second elastic member 13 are arranged along the axial direction of the guide rod 11. In the present application, the arrangement of the first elastic member 12 and the second elastic member 13 along the axial direction of the guide rod 11 can prolong the compression stroke of the elastic member. When a larger impact is encountered, the first elastic member 12 and the second elastic member 13 can deform sequentially, thereby providing more sufficient buffer space, effectively reducing the impact force on the vehicle, and improving the adaptability of the vehicle to different working conditions during driving, so as to improve the overall performance of the vehicle.

[0039] In some embodiments of the present application, the first elastic member 12 includes a first elastic body 122 and a first support plate 121, and the first support plate 121 is arranged at the first end of the first elastic body 122; the second elastic member 13 includes a second elastic body 132 and a second support plate 131, and the second support plate 131 is arranged at the first end of the second elastic body 132; the first support plate 121 and the second support plate 131 abut each other, so that the first elastic member 12 and the second elastic member 13 are connected in series along the axial direction. In the present application, the first support plate 121 and the second support plate 131 are arranged to realize the axial connection between the first elastic member 12 and the second elastic member 13. The first support plate 121 and the second support plate 131 can provide effective support for the first elastic member 12 and the second elastic member 13, thereby effectively improving the situation that the first elastic member 12 and the second elastic member 13 are radially deviated or twisted during the force process, and improving the situation that the first elastic member 12 and the second elastic member 13 are separated from each other, thereby effectively improving the stability and reliability of the buffer mechanism 10. In addition, by arranging the first support plate 121 and the second support plate 131, the impact force received by the first elastic member 12 and the second elastic member 13 can be dispersed to the corresponding support plates, thereby effectively improving the situation that the first end of the elastic body is damaged due to excessive impact force, and improving the service life of the first elastic body 122 and the second elastic body 132.

[0040] Optionally, the first support plate 121 and the second support plate 131 are circular trays made of iron material. Of course, in some other embodiments, trays made of other materials can also be selected, which are not limited here.

[0041] Please refer to Figures 1 to 3 , please refer to Figure 4 , Figure 4 is an exploded structural schematic view of an embodiment of the buffer mechanism of the present application.

[0042] In some embodiments of the present application, the buffer mechanism 10 further comprises an intermediate support 14. The intermediate support 14 is arranged between the first support plate 121 and the second support plate 131; wherein the first support plate 121 and the second support plate 131 respectively abut the two end faces of the intermediate support 14 along the axial direction of the guide rod 11. In the present application, by arranging the intermediate support 14, the first support plate 121 and the second support plate 131 can be respectively abutted, thereby improving the stability of the series connection of the first elastic body 122 and the second elastic body 132, to improve the phenomenon of dislocation and separation of the first elastic body 122 and the second elastic body 132 during stress, and thereby can be beneficial to improve the reliability of the buffer mechanism 10. In addition, the arrangement of the intermediate support 14 can further absorb and disperse part of the impact force during vehicle driving, thereby improving the buffering capacity of the buffer mechanism 10.

[0043] In some embodiments of the present application, the first elastic body 122 comprises a first spring, and the second elastic body 132 comprises a second spring, and the inner diameter of the first spring is greater than the inner diameter of the second spring. In the present application, the inner diameter of the first spring is greater than the inner diameter of the second spring, which on the one hand, since the first spring has a large elastic coefficient and is used to absorb a large impact force, the inner diameter of the first spring is set to be greater than that of the second spring, so that the first spring can provide a larger stress area, thereby enabling the first spring to distribute the impact force more evenly when bearing a larger impact force, and thus this setting can help to reduce the local stress concentration of the first spring, thereby being beneficial to prolong the service life of the first spring. On the other hand, it is also convenient for production personnel to distinguish the first spring and the second spring with different elastic coefficients, thereby reducing the probability of installation errors, while also reducing the operation difficulty and time cost.

[0044] It should be noted that the diameter of the first support plate 121 corresponds to the inner diameter of the first spring, and the diameter of the second support plate 131 corresponds to the inner diameter of the second spring, which can also enable the first support plate 121 and the second support plate 131 to stably support the first spring and the second spring respectively, to further improve the reliability of the buffer system.

[0045] Please refer to Figures 1 to 4 , please refer to Figures 5 to 6 , Figure 5 is a structural schematic view of the first face of the intermediate support of an embodiment of the buffer mechanism of the present application. Figure 6is a structural schematic view of a second face of an intermediate support of an embodiment of the buffer mechanism of the present application.

[0046] In some embodiments of the present application, the intermediate support 14 is formed with a first boss 141 on a face thereof facing the first support plate 121, and the first boss 141 abuts against the first support plate 121; the intermediate support 14 is formed with a second boss 142 on a face thereof facing the second support plate 131, and the second boss 142 abuts against the second support plate 131. In the present application, by virtue of the provision of the first boss 141 and the second boss 142, on the one hand, the impact force can be more evenly dispersed to the intermediate support 14 through the bosses, so as to prevent stress from being concentrated at the contact edge of the intermediate support 14 and the support plate, thereby improving the reliability of the buffer mechanism 10; on the other hand, the provision of the first boss 141 and the second boss 142 can also enhance the structural strength of the intermediate support 14, so that the intermediate support 14 is less likely to be deformed or damaged when it bears the pressure from the first spring and the second spring, thereby effectively improving the service life of the intermediate support 14.

[0047] Preferably, the outer diameter of the first boss 141 is greater than the outer diameter of the second boss 142. Since the first spring has a large stiffness and a large inner diameter, the first spring needs a larger support area to disperse the impact force it receives, while the second spring has a small stiffness and a small inner diameter, and thus the second spring needs a smaller support. By virtue of the fact that the outer diameter of the first boss 141 is greater than the outer diameter of the second boss 142, different spring stiffnesses can be better adapted, thereby better improving the buffering effect of the buffer mechanism 10. In addition, the above-mentioned arrangement can also improve the efficiency of production personnel in distinguishing the installation positions of the first spring and the second spring when installing the first spring and the second spring, thereby reducing the probability of installation errors, and thus effectively improving the installation efficiency.

[0048] Of course, in some other embodiments, the outer diameter of the first boss 141 can also be less than or equal to the outer diameter of the second boss 142, and only needs to be correspondingly arranged according to the inner diameters of the first spring and the second spring. Herein, no limitation is made.

[0049] In some embodiments of the present application, the guide rod 11 is formed with a first guide portion 111, a second guide portion 112 and a third guide portion 113. The first guide portion 111 is located at one end of the guide rod 11; the second guide portion 112 is located at the other end of the guide rod 11; the third guide portion 113 is located between the first guide portion 111 and the second guide portion 112; and the outer diameter of the third guide portion 113 is smaller than the outer diameters of the first guide portion 111 and the second guide portion 112. In the present application, the outer diameter of the third guide portion 113 is set to be smaller during the compression and expansion of the first elastic member 12 and the second elastic member 13 under the impact force, so as to reduce the contact area between the third guide portion 113 and the elastic members, effectively reduce the friction during the movement of the elastic members, and thus make the movement of the elastic members more smooth, which is beneficial to improve the reliability of the movement of the elastic members. In addition, the outer diameters of the first guide portion 111 and the second guide portion 112 are larger than that of the third guide portion 113, which can limit the axial movement range of the first elastic member 12 and the second elastic member 13 on the guide rod 11, so as to prevent the first elastic member 12 and / or the second elastic member 13 from being detached from the guide rod 11 in extreme cases, thereby effectively improving the reliability of the buffer mechanism 10, and further improving the safety of the vehicle driving.

[0050] Optionally, the outer diameters of the first guide portion 111 and the second guide portion 112 can be equal, or the outer diameters of the first guide portion 111 and the second guide portion 112 can be unequal, as long as the outer diameters of both are larger than that of the third guide portion 113, which is not limited herein.

[0051] Please refer to Figure 7 , Figure 7 which is a structural schematic view of the nested structure of the first elastic member and the second elastic member in another embodiment of the buffer mechanism of the present application.

[0052] In still another embodiment of the present application, the first elastic member 12 comprises a first spring, and the second elastic member 13 comprises a second spring, and the inner diameter of the first spring is larger than that of the second spring; and the second spring is sleeved in the first spring. Firstly, in this embodiment, not only the different impact forces during the driving of the vehicle can be absorbed by the first spring and the second spring, but also the second spring is sleeved in the first spring, i.e., the first spring and the second spring are in nested arrangement, which on the one hand can reduce the axial space of the buffer mechanism 10, and is beneficial to optimize the overall layout of the vehicle; and on the other hand, the spring arranged in the inside can be wrapped by the spring arranged outside, so that the inside spring can be protected to a certain extent when subjected to external impact, thereby reducing the risk of damage caused by direct action of external force, and further effectively improving the service life of the spring.

[0053] Please continue to refer to Figure 1 and Figure 4In some embodiments of the present application, the two ends of the guide rod 11 are respectively formed with a first stop portion 114 and a second stop portion 115 for stopping the first elastic member 12 and / or the second elastic member 13. The provision of the first stop portion 114 and the second stop portion 115 can limit the axial movement range of the first elastic member 12 and / or the second elastic member 13, so as to prevent the first elastic member 12 and the second elastic member 13 from being separated from the guide rod 11, thereby improving the reliability of the buffer mechanism 10 and further improving the safety of the vehicle.

[0054] When the first elastic member 12 and the second elastic member 13 are connected in series to the guide rod 11, the first stop portion 114 and the second stop portion 115 stop the first elastic member 12 and the second elastic member 13, respectively. When the first elastic member 12 and the second elastic member 13 are arranged in a nested manner, the first stop portion 114 and the second stop portion 115 can simultaneously stop the first elastic member 12 and the second elastic member 13.

[0055] In some embodiments of the present application, the buffer mechanism 10 further comprises a swing arm 15, the first stop portion 114 or the second stop portion 115 is connected to the swing arm 15, and the swing arm 15 is used to connect the vehicle body. The provision of the swing arm 15 can increase the contact area between the guide rod 11 and the vehicle body, so as to disperse the force received by the guide rod 11 to the vehicle. Compared with the mode of directly connecting the first stop portion 114 or the second stop portion 115 to the vehicle body, the swing arm 15 can reduce the local stress condition of the connection between the vehicle body and the first stop portion 114 or the second stop portion 115, thereby reducing the damage of the force received by the guide rod 11 to the vehicle body and improving the reliability of the vehicle.

[0056] The swing arm 15 can be connected to the first stop portion 114 or the second stop portion 115, and the present application does not limit the swing arm 15 to be connected to the first stop portion 114 or the second stop portion 115.

[0057] In a second aspect, the present application provides a vehicle. The vehicle comprises a vehicle body and the buffer mechanism 10 described above. The buffer mechanism 10 is arranged on the vehicle body. Since the vehicle comprises the buffer mechanism 10 described in the above embodiments, the vehicle also has the beneficial effects of the buffer mechanism 10 described above, and details are not repeated here.

[0058] It should be noted that the terms "horizontal", "vertical", and the like, do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined; the terms "parallel", "perpendicular", and the like, also do not mean that the fittings must be absolutely parallel or perpendicular, but can form a certain angular deviation. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] It can be understood that the meaning of "multiple" herein is at least two, such as two, three, etc., unless specifically limited. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but can optionally also include steps or units not listed, or can optionally also include other steps or units inherent to the process, method, product or device. The term "and / or", only describes the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0060] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A buffer mechanism provided in a vehicle body for buffering a vehicle, characterized by, The buffer mechanism comprises: a guide rod configured to be arranged on the vehicle body; a first elastic member sleeved on the guide rod; a second elastic member sleeved on the guide rod, and the extension direction of the second elastic member is consistent with the extension direction of the first elastic member; wherein the elastic coefficient of the first elastic member is greater than the elastic coefficient of the second elastic member.

2. The cushioning mechanism of claim 1, wherein, The first elastic member and the second elastic member are arranged along the axial direction of the guide rod.

3. The cushioning mechanism of claim 2, wherein, The first elastic member comprises a first elastic body and a first support plate, and the first support plate is arranged at the first end of the first elastic body; The second elastic member comprises a second elastic body and a second support plate, and the second support plate is arranged at the first end of the second elastic body; The first support plate and the second support plate abut to make the first elastic member and the second elastic member series connected along the axial direction.

4. The cushioning mechanism of claim 3, wherein, The buffer mechanism further comprises: an intermediate support arranged between the first support plate and the second support plate; wherein the first support plate and the second support plate respectively abut the two end faces of the intermediate support along the axial direction of the guide rod.

5. The cushioning mechanism of claim 3, wherein, The first elastic body comprises a first spring, and the second elastic body comprises a second spring, and the inner diameter of the first spring is greater than the inner diameter of the second spring.

6. The cushioning mechanism of claim 4, wherein, One side of the intermediate support towards the first support plate is formed with a first boss, and the first boss abuts the first support plate; One side of the intermediate support towards the second support plate is formed with a second boss, and the second boss abuts the second support plate.

7. The cushioning mechanism of claim 1, wherein, The guide rod comprises: a first guide part located at one end of the guide rod; a second guide part located at the other end of the guide rod; a third guide part located between the first guide part and the second guide part; wherein the outer diameter of the third guide part is smaller than the outer diameter of the first guide part and the second guide part.

8. The cushioning mechanism of claim 1, wherein, The first elastic member comprises a first spring, and the second elastic member comprises a second spring, and the inner diameter of the first spring is greater than the inner diameter of the second spring; wherein the second spring is sleeved in the first spring.

9. The cushioning mechanism of any of claims 1-8, wherein, The two ends of the guide rod are respectively formed with a first stop part and a second stop part for stopping the first elastic member and / or the second elastic member.

10. The cushioning mechanism of claim 9, wherein, The buffer mechanism further comprises: a swing arm connected with the first stop part or the second stop part, and the swing arm is used for connecting the vehicle body.

11. A vehicle characterized by comprising: The buffer mechanism comprises a vehicle body and any one of the buffer mechanisms according to claims 1-10, wherein the buffer mechanism is arranged on the vehicle body.

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