Suspension state monitoring system and vehicle

Abstract

The utility model provides a suspension state monitoring system which comprises a suspension framework, a sensor assembly and a suspension assembly which are connected in sequence, the suspension framework is used for being connected with a power assembly, and the suspension assembly is used for being connected with a vehicle frame; the sensor assembly comprises a first connecting end, a strain piece and a second connecting end which are connected in sequence, the first connecting end is connected with the suspension framework, and the second connecting end is connected with the suspension assembly. According to the application, the force value borne by the suspension assembly and the suspension framework during the operation of the power assembly can be obtained through the strain piece in the sensor assembly, so that the force value is monitored, and the situation that the suspension assembly and the suspension framework are fractured due to the fact that the force value borne by the suspension assembly and the suspension framework during the torque output of the power assembly is too large is avoided; therefore, the service lives of the suspension assembly and the suspension framework are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a suspension state monitoring system and a vehicle. Background Art

[0002] Hybrid vehicles have two kinds of power: fuel and battery. When the two kinds of power are used at the same time, the torque output by the engine may be much greater than the torque of the conventional power. When the vehicle is driving on special roads, excessive torque can easily cause suspension fracture. Therefore, a suspension status monitoring system is urgently needed to avoid suspension fracture. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a suspension status monitoring system and a vehicle to solve the problem of suspension fracture.

[0004] Based on the above purpose, the utility model provides a suspension state monitoring system, comprising a suspension frame, a sensor assembly and a suspension assembly connected in sequence, wherein the suspension frame is used to be connected to a power assembly, and the suspension assembly is used to be connected to a vehicle frame;

[0005] The sensor assembly includes a first connection end, a strain member, and a second connection end which are connected in sequence. The first connection end is connected to the suspension frame, and the second connection end is connected to the suspension assembly.

[0006] Furthermore, the sensor assembly also includes a connecting member, which is located between the second connecting end and the suspension assembly and is respectively connected to the second connecting end and the connecting end of the suspension assembly.

[0007] Furthermore, the connecting member is a U-shaped structure, a bottom wall of which is connected to the second connecting end, and two side walls are respectively connected to two opposite surfaces of the connecting end of the suspension assembly.

[0008] Furthermore, the strain member includes a rigid spring and a strain gauge, one end of the rigid spring is connected to the first connection end, and the other end is connected to the second connection end, the strain gauge is located on the rigid spring, and is electrically connected to the vehicle controller.

[0009] Furthermore, the thickness of the first connection end is greater than the thickness of the second connection end.

[0010] Furthermore, a first thread groove is provided on the first connection end, and the first connection end is connected to the suspension frame via a first bolt. The first bolt passes through the suspension frame and is threadably connected to the first thread groove.

[0011] Furthermore, the connecting member is connected to the second connecting end via a second bolt, the second bolt passes through the connecting member and the second connecting end, and is threadedly connected to the second connecting end, a plurality of second bolts are provided, and are evenly distributed on the connecting member and the second connecting end.

[0012] Furthermore, the connecting member is connected to the connecting end of the suspension assembly via a third bolt, a second thread groove is provided on the connecting end of the suspension assembly, and the third bolt passes through the connecting member and is threadedly connected to the second thread groove.

[0013] Furthermore, the side wall of the connecting member includes a first side wall and a second side wall that are integrally connected, the first side wall is arranged close to the bottom wall of the connecting member, the thickness of the second side wall is greater than the thickness of the first side wall, and the third bolt passes through the second side wall and is threadedly connected to the second thread groove.

[0014] Based on the same inventive concept, the present application also provides a vehicle, comprising a suspension state monitoring system as described above.

[0015] From the above description, it can be seen that the utility model provides a suspension state monitoring system, in which a sensor assembly is arranged to connect the suspension assembly with the suspension frame, and the strain member in the sensor assembly can sense the displacement of the suspension assembly relative to the suspension frame, and obtain the force value transmitted by the suspension frame to the suspension assembly based on the displacement, that is, when the powertrain outputs torque, the suspension frame and the suspension assembly are subjected to the force value of the powertrain; when the powertrain is running, the force value subjected to the suspension assembly and the suspension frame during the operation of the powertrain is obtained through the strain member in the sensor assembly, so as to monitor the force value, thereby avoiding the suspension assembly and the suspension frame from being broken due to excessive force when the powertrain outputs torque, thereby improving the service life of the suspension assembly and the suspension frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the suspension state monitoring system of an embodiment of the utility model;

[0018] Figure 2 It is a side structural schematic diagram of the suspension status monitoring system according to an embodiment of the utility model.

[0019] In the figure: 10, suspension frame; 20, sensor assembly; 21, first connection end; 22, strain member; 23, second connection end; 24, connecting member; 30, suspension assembly; 31, inner core; 32, bushing; 40, first bolt; 50, second bolt; 60, third bolt. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the utility model should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] In related technologies, a vehicle that can achieve both fuel and electric drive modes at the same time is called a hybrid vehicle.

[0023] In hybrid models, the powertrain layout is mostly transverse front-wheel drive, and is mostly supported by a pendulum-type suspension structure. The pendulum-type suspension is increasingly widely used in the field of vehicle suspension due to its simple structure, low cost, good vibration isolation effect, convenient design, and easy vehicle design and layout.

[0024] Since hybrid vehicles have both fuel and electric power, when the two power sources are acting at the same time, their output torque may be much greater than the torque of conventional power. Under special working conditions (such as bumpy roads), excessive torque can easily cause suspension breakage and affect vehicle driving.

[0025] Based on this, the present application proposes a suspension status monitoring system and a vehicle to monitor the status of the suspension and avoid suspension breakage.

[0026] Hereinafter, one or more embodiments of the present application will be described in detail through specific embodiments. Figure 1 and Figure 2As shown, a suspension state monitoring system comprises a suspension frame 10, a sensor assembly 20 and a suspension assembly 30 connected in sequence, wherein the suspension frame 10 is used to be connected to a powertrain, and the suspension assembly 30 is used to be connected to a vehicle frame;

[0027] The sensor assembly 20 includes a first connection end 21 , a strain member 22 , and a second connection end 23 which are connected in sequence. The first connection end 21 is connected to the suspension frame 10 , and the second connection end 23 is connected to the suspension assembly 30 .

[0028] Specifically, the suspension skeleton 10 and the suspension assembly 30 connect the powertrain to the vehicle frame to transmit the force generated when the powertrain is running. The suspension skeleton 10 and the suspension assembly 30 are collectively referred to as the suspension structure of the vehicle, wherein the suspension assembly 30 includes an inner core 31 and a bushing 32, the bushing 32 is sleeved on the periphery of one end of the inner core 31, the inner core 31 is connected to the vehicle frame, and the bushing 32 is connected to the suspension skeleton 10. In the present application, the bushing 32 is connected to the second connection end 23 of the sensor assembly 20, and the first connection end 21 of the sensor assembly 20 is connected to the suspension skeleton 10, and the suspension skeleton 10 and the suspension assembly 30 are connected through the sensor assembly 20.

[0029] In this embodiment, a sensor assembly 20 is provided to connect the suspension assembly 30 with the suspension skeleton 10, and the strain member 22 in the sensor assembly 20 can sense the displacement of the suspension assembly 30 relative to the suspension skeleton 10, and obtain the force value transmitted by the suspension skeleton 10 to the suspension assembly 30 based on the displacement, that is, when the powertrain outputs torque, the suspension skeleton 10 and the suspension assembly 30 are subjected to the force value of the powertrain; when the powertrain is running, the force value subjected to the suspension assembly 30 and the suspension skeleton 10 during the operation of the powertrain is obtained through the strain member 22 in the sensor assembly 20, so as to monitor the force value, so as to avoid the suspension assembly 30 and the suspension skeleton 10 from being broken due to excessive force when the powertrain outputs torque, that is, to avoid vehicle suspension breakage, thereby improving the service life of the suspension assembly 30 and the suspension skeleton 10.

[0030] In some embodiments, the sensor assembly 20 further includes a connector 24 , which is located between the second connecting end 23 and the suspension assembly 30 , and is connected to the second connecting end 23 and the connecting end of the suspension assembly 30 , respectively.

[0031] Specifically, the connecting end of the suspension assembly 30 is located on the bushing 32. The bushing 32 is generally made of rubber and is relatively soft. When the second connecting end 23 of the sensor assembly 20 is connected to the bushing 32, the force from the suspension frame 10 received by the second connecting end 23 will be buffered on the bushing 32, so that the force value error sensed by the stress member of the sensor assembly 20 is relatively large, affecting the sensing accuracy of the sensor assembly 20, and further affecting the monitoring accuracy of the monitoring system; the rigid connecting member 24 is provided to be connected to the bushing 32, so as to avoid the second connecting end 23 of the sensor assembly 20 from being connected to the bushing 32, thereby avoiding the bushing 32 from affecting the second connecting end 23, resulting in affecting the monitoring accuracy of the strain member 22.

[0032] In this embodiment, the connecting member 24 is provided to connect the sensor assembly 20 with the connecting end of the suspension assembly 30, so that the connecting member 24 can adapt to the connecting end of the suspension assembly 30, and the connection is more stable. At the same time, it also avoids the situation where the second end connected to the strain member 22 is directly connected to the connecting end of the suspension assembly 30, which affects the monitoring accuracy of the strain member 22, which is beneficial to ensure the monitoring accuracy of the monitoring system.

[0033] In some embodiments, the connecting member 24 is a U-shaped structure, the bottom wall of which is connected to the second connecting end 23 , and the two side walls are respectively connected to the two opposite sides of the connecting end of the suspension assembly 30 .

[0034] Specifically, the connecting end of the suspension assembly 30 is a rectangular structure, and the connecting piece 24 is set to a U-shaped structure, so that its free end is adapted to the outer shape of the connection between the connecting end of the suspension assembly 30 and its main body (for example: the connecting end of the suspension assembly 30 is integrally connected to its main body, and the connection is a sloped structure, and the free end of the U-shaped structure can be set to a sloped structure, and its slope is adapted to the slope of the connection), ensuring the stable connection between the connecting piece 24 and the suspension assembly 30, and the two side walls of the U-shaped structure are relatively arranged, so that they are respectively connected to the two opposite sides of the connecting end of the suspension assembly 30, which can not only ensure the stability of the connection, but also avoid the existence of a connection gap between the connecting piece 24 and the connecting end of the suspension assembly 30, with a compact structure and saving layout space.

[0035] In this embodiment, the connecting member 24 is set to a U-shaped structure, so that its bottom wall is connected to the second connecting end 23, its bottom wall and the second connecting end 23 are connected in a planar manner, and its side wall and the connecting end are also connected in a planar manner, which is conducive to a stable connection while avoiding the existence of a connection gap, and the structure is compact and saves layout space.

[0036] In some embodiments, the strain member 22 includes a rigid spring and a strain gauge, one end of the rigid spring is connected to the first connection end 21, and the other end is connected to the second connection end 23, the strain gauge is located on the rigid spring, and is electrically connected to the vehicle controller.

[0037] Specifically, the rigid spring is used to connect the first connection end 21 and the second connection end 23, which can not only ensure the stability of the connection between the first connection end 21 and the second connection end 23, but also sense the relative displacement between the second connection end 23 and the first connection end 21. The strain gauge is located on the rigid spring and can identify the displacement occurring on the rigid spring. Based on this, the force value transmitted from the suspension skeleton 10 to the suspension assembly 30 via the rigid spring can be obtained, so as to achieve the purpose of monitoring the force value applied to the suspension skeleton 10 and the suspension assembly 30.

[0038] In this embodiment, the rigid spring and the strain gauge work together to sense the force applied to the suspension frame 10 and the suspension assembly 30. The strain gauge is electrically connected to the vehicle controller, so that the vehicle controller can receive the force sensed by the strain gauge, make a judgment based on the force value, and generate an alarm when the force value is not within the normal range, so as to warn the user and avoid vehicle suspension breakage.

[0039] It should be noted that the suspension frame 10 and the suspension assembly 30 are both vehicle suspensions, and the maximum value of their bearing capacity can be determined through experiments, and on this basis, a reference value is selected as the warning force value of the vehicle suspension.

[0040] For example, it is experimentally determined that the maximum bearing capacity of the suspension frame 10 is 110N, and the maximum bearing capacity of the suspension assembly 30 is 100N. Then the warning force value of the vehicle suspension can be set to 100N*90%, that is, 90N.

[0041] In addition, the vehicle controller may also pre-store the correspondence between the output torque of the powertrain and the suspension force. After the force value sensed by the sensor assembly 20 is transmitted to the vehicle controller, the vehicle controller compares the force value sensed by the sensor assembly 20 with the suspension force corresponding to the current output torque based on the acquired current output torque of the powertrain and the pre-stored correspondence. If the difference is not within the normal range, it is determined that there is a problem with the suspension (for example, a break or a crack), and an alarm is issued to alert the user.

[0042] In some embodiments, the thickness of the first connection end 21 is greater than the thickness of the second connection end 23 .

[0043] Specifically, the first connecting end 21 is used to connect with the suspension skeleton 10. The first connecting end 21 is the first carrier for transmitting force to the suspension skeleton 10. Setting the thickness of the first connecting end 21 to be greater than the thickness of the second connecting end 23 can largely avoid the first connecting end 21 from breaking, making the connection between the first connecting end 21 and the suspension skeleton 10 more stable, thus avoiding the situation where the monitoring system issues an early warning due to its unstable connection.

[0044] In some embodiments, a first thread groove is provided on the first connection end 21 , and the first connection end 21 is connected to the suspension frame 10 via a first bolt 40 . The first bolt 40 passes through the suspension frame 10 and is threadedly connected to the first thread groove.

[0045] Specifically, the first connecting end 21 is fixedly connected to the suspension frame 10 through the first thread groove and the first bolt 40. The depth of the first thread groove is related to the thickness of the first connecting end 21, which can ensure the connection between the first bolt 40 and the first thread groove to the greatest extent, so that the connection between the first connecting end 21 and the suspension frame 10 is more stable.

[0046] In some embodiments, a first threaded hole is provided on the first connection end 21 , and the first connection end 21 is connected to the suspension frame 10 via a first bolt 40 . The first bolt 40 passes through the suspension frame 10 and the first threaded hole, and is threadedly connected to the first threaded hole.

[0047] Specifically, the first bolt 40 passes through the first threaded hole and is threadedly connected to the first connection end 21 , so that the first bolt 40 can be connected to the first connection end 21 to the greatest extent, which is beneficial to the stable connection of the first connection end 21 .

[0048] In some embodiments, the connecting member 24 is connected to the second connecting end 23 via a second bolt 50. The second bolt 50 is arranged to pass through the connecting member 24 and the second connecting end 23 and is threadedly connected to the second connecting end 23. A plurality of second bolts 50 are provided and are evenly distributed on the connecting member 24 and the second connecting end 23.

[0049] Specifically, the second bolt 50 passes through the bottom wall of the connecting member 24 and the second connecting end 23, and is threadedly connected to the second connecting end 23. Four second bolts 50 are provided, which are evenly distributed on the bottom wall of the connecting member 24 and the second connecting end 23, and the axes of the four second bolts 50 coincide with the axis of the bottom wall of the connecting member 24 and the axis of the second connecting end 23.

[0050] In this embodiment, the plurality of second bolts 50 are evenly distributed on the second connection end 23 and the bottom wall of the connection member 24 , which can further ensure a stable connection between the connection member 24 and the second connection end 23 .

[0051] In some embodiments, the connecting member 24 is connected to the connecting end of the suspension assembly 30 via a third bolt 60. A second thread groove is provided on the connecting end of the suspension assembly 30. The third bolt 60 passes through the connecting member 24 and is threadedly connected to the second thread groove.

[0052] In this embodiment, the third bolt 60 stably connects the side wall of the connecting member 24 with the connecting end of the suspension assembly 30, so that the force transmitted to the suspension assembly 30 via the connecting member 24 can be stably transmitted, which is beneficial to the accuracy of the monitoring system.

[0053] Specifically, four third bolts 60 are provided, one side wall of the connecting member 24 is connected to one side of the connecting end of the suspension assembly 30 by two third bolts 60, and the third bolts 60 on both side walls of the connecting member 24 are symmetrically distributed along the axis of the connecting member 24.

[0054] In some embodiments, the side wall of the connecting member 24 includes a first side wall and a second side wall that are integrally connected, the first side wall is arranged close to the bottom wall of the connecting member 24, the thickness of the second side wall is greater than the thickness of the first side wall, and the third bolt 60 passes through the second side wall and is threadedly connected to the second thread groove.

[0055] In this embodiment, the thickness of the portion where the side wall of the connecting member 24 is connected to the connecting end of the suspension assembly 30 is set to be larger, which can not only enhance the connection stability between the connecting member 24 and the suspension assembly 30, but also provide an installation space for the second bolt 50 that passes through the bottom wall of the connecting member 24 and the second connecting end 23, thereby facilitating the installation of the monitoring system.

[0056] In some embodiments, the sensor assembly 20 is an axisymmetric structure, and its axis coincides with the axis of the first bolt 40 .

[0057] In this embodiment, the sensor assembly 20 is an axisymmetric structure, and the plurality of second bolts 50 and the plurality of third bolts 60 are evenly and symmetrically distributed relative to the axis of the sensor assembly 20. The first bolt 40 is provided with one, whose axis coincides with the axis of the sensor assembly 20, so that the force on the first bolt 40 is uniform, avoiding damage due to uneven force, which affects the use of the monitoring system.

[0058] In some embodiments, the connection end of the suspension assembly 30 is an axisymmetric structure, and its axis coincides with the axis of the sensor assembly 20 .

[0059] In this embodiment, the sensor assembly 20 is connected to the connecting end of the suspension assembly 30, and the axis of the connecting end of the suspension assembly 30 is arranged to coincide with the axis of the sensor assembly 20. This enables the sensor assembly 20 to evenly transmit force to the connecting end of the suspension assembly 30, thereby avoiding uneven force on the connecting end of the suspension assembly 30, affecting the stability of the suspension assembly 30. In addition, it is also beneficial for the sensor assembly 20 to sense the accuracy of the force of the suspension assembly 30, thereby improving the monitoring accuracy of the monitoring system.

[0060] Based on the same inventive concept, the present application also provides a vehicle, including a suspension state monitoring system as described above, and its beneficial effects are the same as the beneficial effects of the above-mentioned suspension state monitoring system, which will not be repeated here.

[0061] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0062] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A suspension status monitoring system, characterized in that: It comprises a suspension frame, a sensor assembly and a suspension assembly connected in sequence, wherein the suspension frame is used to be connected to a power assembly, and the suspension assembly is used to be connected to a vehicle frame; The sensor assembly includes a first connection end, a strain member, and a second connection end which are connected in sequence. The first connection end is connected to the suspension frame, and the second connection end is connected to the suspension assembly.

2. A suspension state monitoring system according to claim 1, characterized in that: The sensor assembly further includes a connecting member, which is located between the second connecting end and the suspension assembly and is respectively connected to the second connecting end and the connecting end of the suspension assembly.

3. A suspension state monitoring system according to claim 2, characterized in that: The connecting member is a U-shaped structure, the bottom wall of which is connected to the second connecting end, and the two side walls are respectively connected to the two opposite surfaces of the connecting end of the suspension assembly.

4. The suspension state monitoring system according to claim 1, characterized in that: The strain member includes a rigid spring and a strain gauge, one end of the rigid spring is connected to the first connection end, and the other end is connected to the second connection end. The strain gauge is located on the rigid spring and is electrically connected to the vehicle controller.

5. The suspension state monitoring system according to claim 1, characterized in that: The thickness of the first connection end is greater than the thickness of the second connection end.

6. A suspension state monitoring system according to claim 1, characterized in that: The first connecting end is provided with a first thread groove, and the first connecting end is connected to the suspension frame via a first bolt, and the first bolt penetrates the suspension frame and is threadedly connected to the first thread groove.

7. A suspension state monitoring system according to claim 3, characterized in that: The connecting member is connected to the second connecting end via a second bolt. The second bolt passes through the connecting member and the second connecting end and is threadedly connected to the second connecting end. A plurality of second bolts are provided and are evenly distributed on the connecting member and the second connecting end.

8. A suspension state monitoring system according to claim 7, characterized in that: The connecting member is connected to the connecting end of the suspension assembly via a third bolt. A second thread groove is provided on the connecting end of the suspension assembly. The third bolt penetrates the connecting member and is threadedly connected to the second thread groove.

9. A suspension state monitoring system according to claim 8, characterized in that: The side wall of the connecting member includes a first side wall and a second side wall which are integrally connected, the first side wall is arranged close to the bottom wall of the connecting member, the thickness of the second side wall is greater than the thickness of the first side wall, and the third bolt passes through the second side wall and is threadedly connected to the second thread groove.

10. A vehicle, characterized in that: It comprises a suspension status monitoring system as claimed in any one of claims 1 to 9.

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