Multifunctional suspension shock absorber and automobile

Abstract

The utility model discloses a multifunctional suspension shock absorber and an automobile. The multifunctional suspension shock absorber comprises a lower supporting column, a connecting rod, a limiting pin and a steering motor. A mounting hole is formed in the lower supporting column, and one end of the connecting rod is connected with the driving end of the steering motor; the other end, away from the steering motor, of the connecting rod is connected into the mounting hole in a sliding mode in the axial direction. The limiting pin is connected with the lower supporting column or the connecting rod and moves along the mounting hole along with the lower supporting column or the connecting rod, and the limiting pin is connected to the lower supporting column or the connecting rod so as to limit relative rotation of the connecting rod and the mounting hole; the steering motor drives the connecting rod to rotate according to a preset state so as to drive the lower supporting column to rotate together. By means of the mode, the safety redundancy problem of the steering system can be solved with high safety, the structure is simple, and the vehicle body structure integration degree can be improved.

Description

Technical Field

[0001] This application belongs to the field of automotive body structures, and particularly relates to a multi-functional suspension shock absorber and an automobile. Background Art

[0002] With the continuous development of automotive technologies, driverless technologies are becoming increasingly mature. For the steering system, driverless driving needs to solve the safety redundancy solution. In the current technological trend, most of the safety redundancy problems of driverless driving are solved through the dual-motor, dual-power supply, and dual-independent control solutions of the steering gear.

[0003] However, the existing technologies have low safety and complex structures. Summary of the Utility Model

[0004] This application provides a multi-functional suspension shock absorber and an automobile, which can achieve the safety redundancy problem of the steering system with high safety, have a simple structure, and can improve the integration degree of the vehicle body structure.

[0005] To solve the above technical problems, a technical solution adopted by this application is: to provide a multi-functional suspension shock absorber, including a lower strut, a connecting rod, a limit pin, and a steering motor; an installation hole is provided on the lower strut, and one end of the connecting rod is connected to the driving end of the steering motor; the other end of the connecting rod away from the steering motor is slidably connected axially in the installation hole; the limit pin connects the lower strut or the connecting rod and moves along the installation hole with the lower strut or the connecting rod, and the limit pin is connected to the lower strut or the connecting rod to limit the relative rotation between the connecting rod and the installation hole; the steering motor drives the connecting rod to rotate according to a preset state to drive the lower strut to rotate together.

[0006] Preferably, the limit pin is arranged in the installation hole; one of the lower strut and the connecting rod is connected to the limit pin, and the other is provided with a limit groove, and the limit groove extends along the axis of the installation hole; the limit pin includes a limiting portion, and the limiting portion can be inserted into the limit groove to limit the relative rotation between the connecting rod and the installation hole, and can slide along the limit groove.

[0007] Preferably, the limit pin is fixed on the lower strut or the connecting rod.

[0008] Preferably, the limit groove is arranged on the connecting rod; the limit pin further includes a fixing portion connected to the limiting portion; a receiving groove is provided in the lower strut, and the receiving groove communicates with the installation hole; the fixing portion is movably installed in the receiving groove, and the fixing portion can move radially along the installation hole in the receiving groove to drive the limiting portion to move to be inserted into the limit groove.

[0009] Preferably, the fixing part has magnetism, and an electromagnet is further arranged in the receiving groove. The electromagnet is used to drive the fixing part to move radially, so that the limiting part can move to limit the relative rotation of the connecting rod and the lower strut.

[0010] Preferably, it further includes an upper support. The steering motor is connected to the upper support. A plurality of mounting posts are arranged on the upper support. An installation plate is arranged on the steering motor. A plurality of fixing holes are arranged on the installation plate. The mounting posts pass through the fixing holes. Nuts are threadedly connected to the mounting posts, and the nuts abut against the side of the installation plate away from the upper support.

[0011] Preferably, the multi-functional suspension shock absorber further includes a spring assembly. The spring assembly is sleeved outside the lower strut. A spring tray is arranged on the outer periphery of the lower strut. The spring assembly is connected between the spring tray and the upper support.

[0012] To solve the above technical problems, another technical solution adopted by this application is: to provide an automobile, including the multi-functional suspension shock absorber according to any one of the embodiments.

[0013] Preferably, the automobile further includes a steering system and wheels. The steering system includes a subframe and a guiding mechanism. The guiding mechanism connects the subframe and the wheels. The guiding mechanism includes a lower control arm, and the lower strut is connected to the lower control arm.

[0014] Preferably, the automobile further includes: a controller, and the controller controls the steering motor to drive the connecting rod and the lower strut to rotate, thereby driving the guiding mechanism to rotate.

[0015] Distinct from the prior art, the beneficial effects of the present application are as follows: The multi-functional suspension shock absorber provided by the present application integrates the steering system into the shock absorber, enabling it to have both shock absorption function and steering function. When the shock absorber is used as the steering system, the limit pin connects the lower strut and the connecting rod to limit the relative rotation between the lower strut and the connecting rod. The steering motor drives the connecting rod to rotate, and the connecting rod drives the lower strut to rotate synchronously, thereby driving the guiding mechanism and the wheel of the suspension to rotate to achieve steering. Since the limit pin only limits the relative displacement in the circumferential direction, the lower strut and the connecting rod can still slide relative to each other axially to achieve shock absorption. When the shock absorber is only used for shock absorption, the steering motor does not drive the connecting rod to rotate, and thus cannot drive the lower strut to rotate synchronously, and steering cannot be achieved. This steering system is completely independent of the original steering system of the vehicle, enabling the vehicle to have two steering systems simultaneously. When the original steering system fails or is inoperable, the steering system integrated in the shock absorber can perform the steering function, providing a new solution for the steering redundancy of driverless vehicles. Since the steering system of the present application is realized through a mechanical structure, it is simple and safer. At the same time, since it is integrated in the shock absorber, the integration degree of the vehicle body structure can be improved. Description of the 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 required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, where:

[0017] Figure 1 is a schematic structural diagram of an embodiment of the multi-functional suspension shock absorber of the present application;

[0018] Figure 2 is an exploded view of an embodiment of the multi-functional suspension shock absorber of the present application;

[0019] Figure 3 is a schematic structural diagram of an embodiment of the connecting rod and the limit pin of the present application;

[0020] Figure 4 is a schematic structural diagram of an embodiment of the lower strut of the present application;

[0021] Figure 5 is Figure 4 a cross-sectional view of an embodiment in the A-A direction in;

[0022] Figure 6 is a schematic structural diagram of an embodiment of the upper support member and the steering motor of the present application;

[0023] Figure 7 is a schematic partial structural diagram of an embodiment of a vehicle of the present application. Detailed implementation manners

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of an embodiment of the multi-functional suspension shock absorber of the present application, Figure 2 and Figure 1 which is an exploded view of an embodiment of the multi-functional suspension shock absorber of the present application. The multi-functional suspension shock absorber 10 includes a lower strut 11, a connecting rod 12 (

[0026] not labeled) and a steering motor 13. An installation hole 111 is provided on the lower strut 11. The installation hole 111 extends along the axial direction of the lower strut 11, and its opening faces upward. A hydraulic damping system may be provided in the installation hole 111. The bottom end of the connecting rod 12 is inserted into the installation hole 111, and the top end of the connecting rod 12 protrudes from the installation hole 111 and is connected to the driving end of the steering motor 13. Specifically, the top end of the connecting rod 12 is inserted into the steering motor 13, and the connecting rod 12 and the lower strut 11 can slide relative to each other axially to achieve damping. A limit pin 14 is provided between the lower strut 11 and the connecting rod 12 of the present application. The limit pin 14 connects the lower strut 11 and the connecting rod 12 and slides axially along with the lower strut 11 or the connecting rod 12. The steering motor 13 drives the connecting rod 12 to rotate according to a preset state to drive the lower strut 11 to rotate together.

[0026] The multi-functional suspension shock absorber provided by the present application integrates the steering system into the shock absorber, enabling it to have both shock absorption function and steering function at the same time. When the shock absorber is used as the steering system, the limit pin 14 limits the relative rotation between the lower strut 11 and the connecting rod 12. The steering motor 13 drives the connecting rod 12 to rotate circumferentially, and the connecting rod 12 drives the lower strut 11 to rotate synchronously, thereby driving the guiding mechanism and the wheels of the suspension to rotate to achieve steering. Since the limit pin 14 only limits the relative displacement in the circumferential direction, the lower strut 11 and the connecting rod 12 can still slide relative to each other axially to achieve damping. When the shock absorber is only used for damping, the steering motor 13 does not drive the connecting rod 12 to rotate and cannot drive the lower strut 11 to rotate synchronously, thus unable to achieve steering. This steering system is completely independent of the original steering system of the vehicle, enabling the vehicle to have two steering systems at the same time. When the original steering system fails or cannot be operated, the steering system integrated in the shock absorber can perform the steering function, providing a new solution for the steering redundancy of driverless vehicles. Since the steering system of the present application is realized through a mechanical structure, it is simple and safer. At the same time, since it is integrated in the shock absorber, the integration degree of the vehicle body structure can be improved.

[0027] Optionally, continue to refer to Figure 2 and in combination with Figure 3 , Figure 3 FIG. is a schematic structural diagram of an embodiment of the connecting rod and the limit pin of the present application. The limit pin 14 is arranged in the mounting hole 111, the lower strut 11 is connected to the limit pin 14, and a limit groove 121 is arranged on the connecting rod 12, and the limit groove 121 extends along the axial direction; the limit pin 14 includes a limiting portion 141 that moves along the radial direction of the mounting hole 111 (not shown in the figure) (i.e., the radial direction of the connecting rod 12), and the limiting portion 141 can be inserted into the limit groove 121 to limit the relative rotation of the connecting rod 12 and the mounting hole 111, and can slide along the limit groove 121. In this embodiment, the limit groove 121 is arranged on the side wall of the connecting rod 12, the limit groove 121 is a rectangular groove, the limit pin 14 is arranged on the lower strut 11, the limiting portion 141 is specifically in the shape of a cuboid, the limiting portion 141 is inserted and adapted to the limit groove 121, and the length of the limit groove 121 along the axial direction is greater than the length of the limiting portion 141, so that the limiting portion 141 cannot slide circumferentially in the limit groove 121, and the limiting portion 141 can only slide radially in the limit groove 121. Therefore, when the limit pin 14 is inserted into the limit groove 121, the connecting rod 12 cannot drive the lower strut 11 to rotate, and the connecting rod 12 and the lower strut 11 can only slide relative to each other along the axial direction. In other embodiments, a limiting sub-groove can also be arranged on the limit pin 14, and a limiting rib extending along the axial direction can also be arranged on the connecting rod 12, and the limiting boss is inserted into the limiting sub-groove to realize the sliding connection of the limit pin 14 and the connecting rod 12 in the axial direction and the circumferential limitation.

[0028] Optionally, the limit pin 14 can be fixed on the lower strut 11. That is, the limit pin 14 is always inserted into the limit groove 121, and the connecting rod 12 and the lower strut 11 are driven to rotate synchronously by the steering motor 13, so that the shock absorber also has a steering function. In other embodiments, the limit groove 121 can be arranged on the inner wall of the mounting hole 111 of the lower strut 11, and the limit pin 14 is arranged on the connecting rod 12.

[0029] Another optionally, the limit pin 14 can also be movably arranged on the lower strut 11. Refer to Figure 3 , Figure 4 and Figure 5 , Figure 4 FIG. is a schematic structural diagram of an embodiment of the lower strut of the present application, Figure 5 is Figure 4 A cross-sectional view of an embodiment in the A-A direction in FIG. The limit pin 14 further includes a fixing portion 142 connected to the limiting portion 141; as Figure 5As shown, a receiving groove 112 extending radially is provided in the lower support column 11. The receiving groove 112 communicates with the mounting hole 111, and the fixing portion 142 is slidably arranged in the receiving groove 112 in the radial direction. In this embodiment, the fixing portion 142 is cylindrical, and its extending direction is perpendicular to the extending direction of the limiting portion 141. Both ends of the limiting portion 141 are exposed on both sides of the fixing portion 142. The limiting pin 14 is in a "T" shape, and the receiving groove 112 includes a circular groove adapted to be inserted into the fixing portion 142. The radial movement of the limiting pin 14 is realized by the relative sliding between the fixing portion 142 and the receiving groove 112. When the fixing portion 142 moves away from the receiving groove 112, the limiting portion 141 is inserted into the limiting groove 121, and the limiting pin 14 is in the first state; when the fixing portion 142 moves into the receiving groove 112, the limiting portion 141 gradually moves away from the limiting groove 121 until it completely disengages, and the limiting pin 14 is in the second state. The limiting pin 14 can be switched between the first state and the second state by moving. In the first state, the limiting pin 14 limits the relative displacement between the lower support column 11 and the connecting rod 12. The lower support column 11 and the connecting rod 12 cannot rotate relative to each other circumferentially. The steering motor 13 can drive the connecting rod 12 and the lower support column 11 to rotate together, but at this time, the lower support column 11 and the connecting rod 12 can still slide relative to each other axially; in the second state, the limiting pin 14 releases the limit on the relative rotation between the lower support column 11 and the connecting rod 12. The lower support column 11 and the connecting rod 12 can achieve relative sliding axially and relative rotation circumferentially, and the steering motor 13 cannot drive the lower support column 11 to rotate. Optionally, chamfers are provided at both ends of the side of the limiting pin 14 facing the limiting groove 121, so that the limiting pin 14 can be smoothly inserted into the limiting groove 121. Compared with the limiting pin 14 fixedly connected to the lower support column 11 or the connecting rod 12, this embodiment can reduce the sliding friction between the limiting pin 14 and the limiting groove 121.

[0030] In other embodiments, when the limiting groove 121 is provided in the lower support column 11, the receiving groove 112 can be provided on the connecting rod 12. In other embodiments, the extending directions of the limiting portion 141 and the fixing portion 142 are the same, and their shapes are the same. The present application does not specifically limit the shapes of the limiting portion 141 and the fixing portion 142.

[0031] Optionally, the fixing portion 142 is magnetic, and an electromagnet (not shown) is further provided in the receiving groove 112. The electromagnet is used to drive the fixing portion 142 to move radially so that the limiting portion 141 can move to limit the relative rotation of the connecting rod 12 and the lower support 11. Specifically, in some embodiments, a spring (not shown) is provided between the fixing portion 142 and the electromagnet. When the electromagnet is energized, the electromagnet is magnetic and can attract the fixing portion 142, so that the fixing portion 142 moves into the receiving groove 112, and the spring contracts to store energy; when the electromagnet is de-energized, the electromagnet is not magnetic, and there is no relative force between the electromagnet and the fixing portion 142. The spring releases energy to push the fixing portion 142 away from the receiving groove 112, and the limiting pin 14 is plugged into the limiting groove 121, and the two are limited. In other embodiments, the electromagnet changes the electromagnetic polarity by turning on and off the power to switch the thrust or suction on the fixing portion 142 to achieve the movement of the limiting pin 14.

[0032] Optionally, in other embodiments, the limit pins 14 , the receiving grooves 112 , the limit grooves 121 , etc. can be radially arranged in pairs on both sides of the connecting rod 12 , and the two limit pins 14 move synchronously to achieve stable limiting of the connecting rod 12 and the lower support 11 .

[0033] Optionally, continue to Figure 2 and Figure 6 , Figure 6 This is a schematic diagram of the structure of an embodiment of the upper support member and steering motor of the present application. The multifunctional suspension shock absorber 10 also includes an upper support member 15, to which the steering motor 13 is connected. The steering motor 13 is fixed to the side of the upper support member 15 away from the lower pillar 11. The upper support member 15 is provided with a through hole (not shown), through which the top layer of the connecting rod 12 passes to connect with the steering motor 13. The upper support member 15 is provided with three mounting posts 151, which are arranged on the side facing the steering motor 13. The steering motor 13 is provided with a mounting plate 131, which is provided with multiple fixing holes 132. The mounting posts 151 are inserted into the fixing holes 132. Nuts (not shown) are threadedly connected to the mounting posts 151, which abut against the side of the mounting plate 131 facing away from the upper support member 15. This ensures that the steering motor 13 can be stably fixed.

[0034] Optionally, continue to Figure 6 The steering motor 13 is equipped with a mounting shaft 133, located on the side of the mounting plate 131 facing away from the upper support member 15. An annular groove 134 is defined around the mounting shaft 133 for connection to the vehicle body. The top end of the steering motor 13 is connected to the vehicle body sheet metal 20. The mounting shaft 133 passes through the support hole 21 in the vehicle body sheet metal 20 and is secured to the vehicle body sheet metal 20 via the annular groove 134.

[0035] Optionally, continue to Figure 1 and Figure 2, the multi-functional suspension shock absorber 10 further includes a spring assembly 16, and the spring assembly 16 is sleeved outside the lower strut 11; a spring tray 113 is provided on the outer periphery of the lower strut 11, and the spring assembly 16 is connected between the spring tray 113 and the upper support member 15. Both ends of the spring assembly 16 respectively abut against the spring tray 113 and the upper support member 15, and the spring assembly 16 is used for further damping through expansion and contraction.

[0036] Refer to Figure 7 , Figure 7 is a schematic diagram of a partial structure of an embodiment of the vehicle of the present application. The present application also provides a vehicle 100, including the multi-functional suspension shock absorber 10 of any embodiment. The vehicle 100 further includes: a guiding mechanism 30, a subframe 32, and a steering gear 40. The steering gear 40 is connected to the guiding mechanism 30; the lower strut 11 is connected to the guiding mechanism 30. In this embodiment, the guiding mechanism 30 may include a lower swing arm 31. The steering gear 40 is connected to the subframe 32, the subframe 32 is connected to the swing arm 31, the swing arm 31 is connected to the wheel 50, and the lower strut 11 is connected to the swing arm 31. The steering gear 40 and the guiding mechanism 30 form a first steering system. The steering gear 40 drives the subframe 32, the guiding mechanism 30, and the wheel 50 to rotate to achieve steering. The multi-functional suspension shock absorber 10 and the guiding mechanism 30 form a second steering system (shown by the dashed box). The steering motor 13 drives the connecting rod 12, the lower strut 11, the guiding mechanism 30, and the wheel 50 to rotate to achieve steering. Among them, the first steering system is the main steering system, and the second steering system is the backup steering system. In other embodiments, the main and backup steering systems can be exchanged. The guiding mechanism 30 can be in other forms, such as a multi-link structure, or the subframe 32 can be not provided.

[0037] Optionally, the vehicle 100 further includes a controller (not shown in the figure). When the limit pin 14 is fixed on the lower strut 11 or the connecting rod 12, when the main steering system fails and the backup steering system is needed, the controller controls the steering motor 13 to drive the connecting rod 12 and the lower strut 11 to rotate, thereby driving the guiding mechanism 30 to rotate, and the guiding mechanism 30 drives the wheel 50 to rotate. When the backup steering system is not needed, the steering motor 13 does not rotate, and the shock absorber only has the damping function. When the limit pin 14 is movably arranged on the lower strut 11 or the connecting rod 12, when the backup steering system is needed, the controller controls the limit pin 14 to move to limit the relative displacement between the lower strut 11 and the connecting rod 12. When the backup steering system is not needed, the controller controls the limit pin 14 to release the limit. Even if the steering motor 13 is driven to rotate, the connecting rod 12 cannot drive the lower strut 11 and the guiding mechanism 30 to rotate. The multi-functional suspension shock absorber 10 provided by the present application is applicable to different vehicle models.

[0038] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present application.

Claims

1. A multi-functional suspension shock absorber, characterized in that, Includes lower support, connecting rod, limit pin and steering motor; The lower support is provided with a mounting hole, and one end of the connecting rod is connected to the driving end of the steering motor; The other end of the connecting rod away from the steering motor is axially slidably connected to the mounting hole; The limit pin is connected to the lower support or the connecting rod and moves along the mounting hole as the lower support or the connecting rod moves. The limit pin is connected to the lower support or the connecting rod to limit the relative rotation of the connecting rod and the mounting hole. The steering motor drives the connecting rod to rotate according to a preset state, so as to drive the lower support to rotate together.

2. The multifunctional suspension shock absorber according to claim 1, characterized in that: The limiting pin is arranged in the mounting hole; One of the lower support and the connecting rod is connected to the limiting pin, and the other is provided with a limiting groove, which extends along the axis of the mounting hole; The limiting pin includes a limiting portion, which can be plugged into the limiting groove to limit the relative rotation of the connecting rod and the mounting hole, and can slide along the limiting groove.

3. The multifunctional suspension shock absorber according to claim 2, characterized in that: The limiting pin is fixed on the lower support or the connecting rod.

4. The multifunctional suspension shock absorber according to claim 2, characterized in that: The limiting groove is provided on the connecting rod; The limiting pin further includes a fixing portion connected to the limiting portion; A receiving groove is provided in the lower support, and the receiving groove is connected to the mounting hole; The fixing portion is movably installed in the receiving groove, and the fixing portion can move radially along the mounting hole in the receiving groove, driving the limiting portion to move until it is plugged into the limiting groove.

5. The multifunctional suspension shock absorber according to claim 4, characterized in that: The fixing portion is magnetic, and an electromagnet is further provided in the receiving groove. The electromagnet is used to drive the fixing portion to move radially so that the limiting portion can move to limit the relative rotation of the connecting rod and the lower support.

6. The multi-functional suspension shock absorber according to claim 1, characterized in that, It also includes an upper support member, and the steering motor is connected to the upper support member; The upper support member is provided with a plurality of mounting posts, the steering motor is provided with a mounting plate, the mounting plate is provided with a plurality of fixing holes, the mounting posts are passed through the fixing holes, and nuts are threadedly connected to the mounting posts, and the nuts are pressed against the side of the mounting plate away from the upper support member.

7. The multi-functional suspension shock absorber according to claim 6, characterized in that, It also includes a spring assembly, wherein the spring assembly is sleeved outside the lower support; A spring tray is provided on the outer periphery of the lower support column, and the spring assembly is connected between the spring tray and the upper support member.

8. A vehicle, characterized in that, include: The multifunctional suspension shock absorber according to any one of claims 1 to 7.

9. The automobile according to claim 8, characterized in that, Also includes: A steering system and wheels, wherein the steering system includes a subframe and a guide mechanism, wherein the guide mechanism connects the subframe and the wheels; The guide mechanism includes a lower swing arm, and the lower support is connected to the lower swing arm.

10. The vehicle according to claim 9, characterized in that, Also includes: A controller controls the steering motor to drive the connecting rod and the lower support to rotate, thereby driving the guide mechanism to rotate.

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