Suspension system for a vehicle

Abstract

A vehicle suspension system of the present application includes a leaf spring, a retaining member for retaining one end of the leaf spring, and a holding member for holding the other end of the leaf spring. The holding member includes a roller and a pressing member. The roller holds the other end of the leaf spring and is rotatable with displacement of the other end of the leaf spring. The pressing member is opposite to the roller. The other end of the leaf spring is disposed between the roller and the pressing member. The roller and the pressing member are configured to change a contact form of the roller and the pressing member with the leaf spring.

Description

Technical Field

[0001] This invention relates to a suspension system for vehicles. Background Technology

[0002] Previously, a suspension system was known, which, when installed in vehicles, had a damping function to prevent vibrations caused by uneven road surfaces from being transmitted to the vehicle body via the wheels, thereby improving the vehicle's ride comfort and handling stability. Among suspension systems, leaf spring suspension systems are constructed using leaf springs (for example, see Patent Document 1).

[0003] The leaf spring described in Patent Document 1 has one end fixed to the vehicle body and the other end held in a sliding position by a slider. The leaf spring is subjected to a load from an axle or the like at its central portion in the longitudinal direction and deforms due to the load.

[0004] Patent Document 1: Japanese Patent Application Publication No. 61-169307. Summary of the Invention

[0005] However, when the end of the leaf spring is held by a slider as in Patent Document 1, wear caused by friction between the slider and the leaf spring can lead to reduced durability, or noise can be generated due to friction during sliding.

[0006] The present invention was made in view of the above, and its object is to provide a vehicle suspension system capable of suppressing the reduction in durability and the generation of noise caused by friction between the leaf spring and the retaining member.

[0007] To solve the above problems and achieve the objective, the vehicle suspension system of the present invention includes a leaf spring; a locking member for locking one end of the leaf spring; and a retaining member for retaining the other end of the leaf spring, the retaining member having: a roller that retains the other end of the leaf spring and is rotatable with displacement of the other end of the leaf spring; and a pressing member opposite to the roller, the other end of the leaf spring being disposed between the roller and the pressing member, the roller and the pressing member being configured to change the contact pattern of the roller and the pressing member with the leaf spring.

[0008] Furthermore, in the vehicle suspension system of the present invention, the other end of the leaf spring is clamped and held by the roller and the pressing member.

[0009] Furthermore, the vehicle suspension system of the present invention is such that, in the above invention, the roller and the pressing member are movable in a fixed relative positional relationship with each other.

[0010] Furthermore, in the vehicle suspension system of the present invention, at least one of the roller and the pressing member is movable.

[0011] Furthermore, the vehicle suspension system of the present invention is such that, in the above invention, the roller and / or the pressing member can move along the generally longitudinal direction of the vehicle.

[0012] Furthermore, the vehicle suspension system of the present invention is such that, in the above invention, the roller and / or the pressing member can move along the generally vertical direction of the vehicle.

[0013] Furthermore, the vehicle suspension system of the present invention, in the above invention, also includes: a control device that controls the movement of the roller and / or the pressing member.

[0014] According to the present invention, the following effects are achieved: the reduction in durability and the generation of noise caused by friction between the leaf spring and the retaining component are suppressed. Attached Figure Description

[0015] Figure 1 This is a diagram showing the structure of a portion of a vehicle that includes the suspension system of Embodiment 1 of the present invention.

[0016] Figure 2 This is a diagram used to illustrate the structure of the leaf spring included in the suspension device according to Embodiment 1 of the present invention.

[0017] Figure 3 This is a flowchart describing the control process performed by the control device included in the suspension system of Embodiment 1 of the present invention.

[0018] Figure 4 This is a diagram used to explain the operation of the rollers in the suspension device of Embodiment 2 of the present invention. Detailed Implementation

[0019] Hereinafter, the embodiments for carrying out the present invention (hereinafter referred to as "implementations") will be described with reference to the accompanying drawings. Furthermore, the drawings are schematic diagrams, and the relationship between the thickness and width of each part, the ratio of the thickness of each part, etc., may differ from the actual situation. The drawings may also sometimes include parts with different dimensional relationships or ratios.

[0020] Implementation Method 1 Figure 1 This is a diagram showing the structure of a portion of a vehicle that includes the suspension system of Embodiment 1 of the present invention. Figure 1 The suspension system 10 shown includes: a suspension device 1 and a control device 200 for controlling the suspension device 1.

[0021] The suspension device 1 is mounted on the vehicle body and supports the axle 100, which in turn supports the wheel 101. Additionally, in... Figure 1In this configuration, the left side is designated as the front of the vehicle, and the right side as the rear. The suspension device 1 includes: a leaf spring 2; a locking member 3 for locking one end of the leaf spring 2; and a retaining member 4 for retaining the other end of the leaf spring 2 so that it can move freely forward and backward.

[0022] The locking member 3 and the retaining member 4 are mounted on the frame 110. Specifically, the locking member 3 is provided in the front mounting portion 120, which is fixed to the frame 110. The retaining member 4 is provided in the rear mounting portion 130, which is fixed to the frame 110. The front mounting portion 120 and the rear mounting portion 130 are fixed to the frame 110 by fasteners such as screws. Alternatively, the locking member 3 is mounted to the front mounting portion 120 by welding or the like. Similarly, the retaining member 4 is mounted to the rear mounting portion 130 by welding or the like. Alternatively, the locking member 3 and the retaining member 4 may be integrally formed with respect to the front mounting portion 120 and the rear mounting portion 130, respectively.

[0023] Insertion holes (not shown) are formed at the center of the leaf spring 2 along its length and at the center of the washer 140. The leaf spring 2 and the washer 140 form a leaf spring assembly, which is fixed by tightening the center bolts 140a and nuts 140b inserted into the insertion holes. The leaf spring assembly is fixed to the housing 160 by U-bolts 150.

[0024] The housing 160 is fixed to the axle 100.

[0025] Figure 2 This diagram illustrates the structure of the leaf spring included in the suspension device according to Embodiment 1 of the present invention. The leaf spring 2 has a main body 20 formed by bending one end of a strip-shaped member, a hook-shaped first end portion 21 provided at one end of the main body 20, and a second end portion 22 provided at the other end of the main body 20. An axle 100 is disposed below the main body 20 at its central portion along its length. The first end portion 21 is locked by a locking member 3. Here, "locking" simply means preventing the first end portion 21 from detaching from the locking member 3, regardless of whether the first end portion 21 rotates relative to the locking member 3. The leaf spring 2 is formed using a metal material (e.g., spring steel), a resin material, or fiber-reinforced plastic (FRP).

[0026] The retaining component 4 consists of a pair of rollers (first roller 41 and second roller 42).

[0027] The first roller 41 has: a first shaft portion 41a, which is connected to the rear mounting portion 130; and a first rotating portion 41b, which is rotatable relative to the first shaft portion 41a. The first rotating portion 41b rotates about the central axis N1 of the first shaft portion 41a relative to the first shaft portion 41a.

[0028] The second roller 42 has: a second shaft portion 42a, which is connected to the rear mounting portion 130; and a second rotating portion 42b, which is rotatable relative to the second shaft portion 42a. The second rotating portion 42b rotates about the central axis N2 of the second shaft portion 42a relative to the second shaft portion 42a.

[0029] The first roller 41 and the second roller 42 are configured such that at least one of them can change its position on the rear mounting portion 130 under the control of the control device 200. In this embodiment 1, the first roller 41 and the second roller 42 are both configured to be able to change their position in one direction along the length direction of the leaf spring 2 (in... Figure 1 An example of moving back and forth in the direction of tilting relative to the vehicle's front-to-back direction is illustrated.

[0030] A leaf spring 2 is inserted between the first roller 41 and the second roller 42. The first roller 41 and the second roller 42 respectively contact the leaf spring 2, thereby gripping the leaf spring 2.

[0031] The first shaft portion 41a and the second shaft portion 42a are formed, for example, using a metal material. Furthermore, the first rotating portion 41b and the second rotating portion 42b are formed, for example, using a metal material, a resin material, rubber, or the like. In this case, by using an elastic material such as rubber or resin to form at least one rotating portion, a damping effect can be obtained. Furthermore, by adjusting the distance between the first shaft portion 41a and the second shaft portion 42a, the damping effect can be adjusted.

[0032] In addition, the first roller 41 and the second roller 42 are opposite to each other, which corresponds to the roller and pressing component at the end of the leaf spring 2 being provided therebetween.

[0033] The leaf spring 2 deforms according to the vibration of the axle 100 caused by uneven road surfaces, etc. (refer to...) Figure 2 (The dotted line indicates this). Furthermore, the second end 22 is clamped by the first roller 41 and the second roller 42, and thus held by the holding member 4. When the second end 22 displaces relative to the holding member 4 due to the deformation of the leaf spring 2, the length between the locking member 3 of the leaf spring 2 and the holding member 4, i.e., the effective span of the leaf spring 2, changes, and therefore, the load characteristics of the leaf spring 2 change. Furthermore, at this time, the first rotating part 41b and the second rotating part 42b rotate according to the displacement of the second end 22, thereby suppressing the generation of friction with the second end 22.

[0034] The control device 200 is used to control the movement of the rollers in the suspension device 1. In this embodiment 1, the control device 200 controls the first roller 41 of the rear mounting part 130 to move it to any position. The control device 200 is configured with a processor such as a CPU (Central Processing Unit) or an ASIC (Application Specific Integrated Circuit) and other arithmetic circuits for performing specific functions.

[0035] The control device 200 includes a memory for storing programs for performing various actions (e.g., programs executed during roller movement control). The control device 200 includes a memory constructed using volatile or non-volatile memory, or a memory constructed using a combination of the above. For example, the memory may be constructed using RAM (Random Access Memory), ROM (Read Only Memory), or the like.

[0036] In addition, the control device 200 includes an input section for receiving various signals related to the operation of the suspension device 1. This input section may be configured using a keyboard, mouse, switch, touchpad, or the like. Furthermore, the control device 200 may also include an output section for displaying images or outputting sound or light. This output section may be configured using a display, speaker, or light source, or the like.

[0037] Figure 3 This is a flowchart describing the control process performed by the control device included in the suspension system of Embodiment 1 of the present invention. First, when the input unit receives a spring load change instruction, the control device 200 starts the spring load change process (step S101).

[0038] The control device 200 sets the direction and amount of movement of the roller (step S102). The control device 200 sets the amount of movement toward the center of the leaf spring or the end of the leaf spring according to the conditions related to the load change indication.

[0039] In the following text, the first roller 41 and the second roller 42 will sometimes be referred to collectively as "rollers".

[0040] Furthermore, the distance (gap) between the first roller 41 and the second roller 42 is set, for example, to be equal to or less than the thickness of the leaf spring 2. The term "equal" here includes manufacturing tolerances, etc. An example of controlling the gap in a way that keeps it constant regardless of how the rollers move is described here.

[0041] The spring coefficient is changed according to the load weight. To maintain / improve operational stability based on the weight of the loaded cargo, the control device 200 sets a variable spring constant based on the weight of the loaded cargo. For example, when the cargo weight is heavier than a set standard weight, the movement direction and amount of movement are set by increasing the spring constant. Conversely, when the cargo weight is lighter than the standard weight, the movement direction and amount of movement are set by decreasing the spring constant. When increasing the spring constant, the control device 200 sets the roller's movement direction to move towards the center (the side of the first end 21), and when decreasing the spring constant, the control device 200 sets the roller's movement direction to move towards the end (the side opposite to the first end 21). Furthermore, the control device 200 sets the amount of movement, for example, based on the difference from the standard weight.

[0042] In addition, the change of spring coefficient can also be achieved by controlling the air suspension, but the change of spring coefficient by changing the position of the rollers mentioned above has a larger range.

[0043] Vehicle ground clearance change To suppress vehicle body sagging caused by cargo loading, or to ensure minimum ground clearance when driving on rough roads or slopes, the control device 200 sets a setting to increase the vehicle body's ground clearance. For example, when the cargo weight is greater than the standard weight, or when ensuring minimum ground clearance on rough roads or slopes, the movement direction and amount are set to increase the vehicle body's ground clearance. Conversely, when traversing roads or buildings with height restrictions, or when improving fuel efficiency, the movement direction and amount are set to decrease the vehicle body's ground clearance. When increasing the vehicle body's ground clearance, the control device 200 sets the roller's movement direction to move towards the center side (the side of the first end 21); when decreasing the vehicle body's ground clearance, the control device 200 sets the roller's movement direction to move towards the end side (the side opposite to the first end 21). Furthermore, the control device 200 sets the amount of movement, for example, based on the adjustment height of the vehicle body's ground clearance. In addition, by reducing the vehicle body's ground clearance, air resistance is reduced, thereby suppressing fuel consumption. Furthermore, the ground clearance of the vehicle body on the rear wheel side can be higher than that on the front wheel side to facilitate loading of goods, or the ground clearance of the vehicle body on the rear wheel side can be lower than that on the front wheel side to facilitate unloading of goods.

[0044] In this way, if the roller moves towards the center (towards the first end 21), the spring constant increases, and the vehicle body's ground clearance rises. Conversely, if the roller moves towards the end (opposite to the first end 21), the spring constant decreases, and the vehicle body's ground clearance falls.

[0045] Then, after setting the direction and amount of movement of the roller, the control device 200 performs roller movement control to change the position of the roller (step S103). As a result, the spring coefficient and the vehicle body's ground clearance can be adjusted.

[0046] In Embodiment 1 of the present invention described above, in the leaf spring 2 that deforms according to the vibration of the axle 100, one end is locked to the vehicle body (here, the frame 110), and the other end is held by the first roller 41 and the second roller 42, thereby rotating the first roller 41 and the second roller 42 according to the displacement of the other end caused by the deformation. According to Embodiment 1, by rotating the rollers, the generation of friction between the leaf spring 2 and the retaining member 4 is suppressed, thereby suppressing the reduction in durability and the generation of noise caused by the friction between the leaf spring and the retaining member.

[0047] Here, when the leaf spring is held in place by a slider, if the side of the leaf spring 2 that is further forward than the axle breaks, the main body of the leaf spring 2 will rotate around the rear end connection, causing the axle to move closer to the vehicle body, resulting in a significant decrease in the vehicle's ground clearance. In contrast, when the leaf spring 2 is clamped by the first roller 41 and the second roller 42 that is further rearward than the first roller 41, as in Embodiment 1, even if the front side of the leaf spring 2 breaks, the rear side will generate a repulsive force due to the clamping, thus suppressing a significant decrease in the vehicle's ground clearance.

[0048] Furthermore, according to Embodiment 1, the position of the roller on the other end of the leaf spring 2 (the rear mounting portion 130) is changed relative to one end of the leaf spring 2 (the front mounting portion 120). Therefore, the spring coefficient or vehicle ground clearance can be adjusted according to the scenario, thereby suppressing cargo damage, adjusting passenger comfort, or improving cargo loading efficiency. As shown in an example of roller position control according to Embodiment 1, by moving the roller from the standard position towards the center of the leaf spring, both the spring coefficient and vehicle ground clearance can be increased compared to the standard position, thus simultaneously ensuring handling stability and vehicle ground clearance.

[0049] Furthermore, according to this embodiment 1, by using rollers to hold the leaf spring 2, compared with the conventional leaf spring which is formed by stacking a main spring and multiple auxiliary springs, the suspension unit consisting of the leaf spring 2, the locking member 3, and the holding member 4 can have non-linear characteristics with a simple structure.

[0050] Furthermore, in this embodiment 1, the thickness of the rotating part relative to the rotating shaft is made uniform, thereby making the resistance of the leaf spring from the roller uniform, thus improving vibration resistance and durability.

[0051] Furthermore, in the above embodiment 1, an example of being able to move back and forth in a direction tilted relative to the vehicle's front-to-back direction was described, but it is also possible to appropriately set its tilt angle depending on the adjustment method.

[0052] Variation Example 1 Next, a variation 1 of Embodiment 1 of the present invention will be described. In Variation 1, the suspension device is configured such that one of the first roller 41 and the second roller 42 of the retaining member 4 is movable at the rear mounting portion 130. Here, the case where the first roller 41 is movable will be described. Other components are the same structure as in the embodiment, and therefore descriptions are omitted.

[0053] In this modified example 1, as in the embodiment, the control device 200 controls the first roller 41. In step S102, when the control device 200 sets the movement direction and amount of the roller, it sets the amount of movement of the first roller 41 forward or backward. Furthermore, while an example of the first roller 41 moving has been described, in the case of the second roller 42 moving, the movement direction and amount of the second roller 42 are set.

[0054] Then, after setting the direction and amount of movement of the first roller 41, the control device 200 performs movement control of the first roller 41, changing the relative position of the first roller 41 with respect to the second roller 42 (step S103). As a result, the spring coefficient and the vehicle body's ground clearance can be adjusted.

[0055] Similar to Embodiment 1 described above, in this modified example 1, the leaf spring 2, which deforms according to the vibration of the axle 100, is secured to the vehicle body (here, the frame 110) at one end, while the other end is held by the first roller 41 and the second roller 42. The first roller 41 and the second roller 42 rotate according to the displacement of the other end caused by the deformation. According to this modified example 1, the rotation of the rollers suppresses the generation of friction between the leaf spring 2 and the retaining member 4, thereby suppressing the reduction in durability and the generation of noise caused by friction between the leaf spring and the retaining member.

[0056] Furthermore, according to this Modification 1, the position of one roller relative to the other roller is changed at the other end of the leaf spring 2 (here, the rear mounting portion 130). Therefore, the spring coefficient or vehicle ground clearance can be adjusted according to the scenario, thereby suppressing cargo damage, adjusting passenger comfort, or improving cargo loading efficiency. As shown in one example of position control according to this Modification 1, by moving the first roller from its standard position towards the center of the leaf spring, the spring coefficient can be increased without increasing the spring stress compared to the standard position, resulting in improved spring durability. In another example of position control according to this Modification 1, by moving the first roller from its standard position towards the end of the leaf spring, the spring coefficient and vehicle ground clearance can be reduced, stabilizing high-speed travel and improving passenger comfort.

[0057] Variation Example 2 Next, a variation 2 of Embodiment 1 of the present invention will be described. In Variation 2, the suspension device is configured such that the first roller 41 and the second roller 42 of the retaining member 4 can move independently at the rear mounting portion 130. Other components are the same as those in the embodiment, and therefore descriptions are omitted.

[0058] Similar to Embodiment 1, in this Modified Example 2, the control device 200 controls the first roller 41 and the second roller 42. In this case, in step S102, when the control device 200 sets the moving direction and moving amount of the rollers, it sets the moving amount of the first roller 41 and the second roller 42 towards the front or the rear, respectively.

[0059] Then, after setting the moving direction and amount of the first roller 41 and the second roller, the control device 200 performs movement control of the first roller 41 and the second roller (step S103). As a result, the spring coefficient and the vehicle body's ground clearance can be adjusted.

[0060] Similar to Embodiment 1 described above, in this modified example 2, which deforms according to the vibration of the axle 100, one end of the leaf spring 2 is locked to the vehicle body (here, the frame 110), while the other end is held by the first roller 41 and the second roller 42. The first roller 41 and the second roller 42 rotate according to the displacement of the other end caused by the deformation. According to this modified example 2, the rotation of the rollers suppresses the generation of friction between the leaf spring 2 and the retaining member 4, thereby suppressing the reduction in durability and the generation of noise caused by friction between the leaf spring and the retaining member.

[0061] Furthermore, according to this modified example 2, the movement amounts of the pair of rollers can be set to be different from each other on the other end side of the leaf spring 2 (here, the rear mounting portion 130). As shown in an example of position control according to this modified example 2, by controlling the first roller 41 and the second roller 42 to move from the standard position to the end side, and making the movement amount of the second roller 42 relatively larger than the movement amount of the first roller 41, the spring coefficient is reduced, and the ground clearance of the vehicle body remains almost unchanged, thereby making the driving stable during normal driving and improving the comfort of the passengers.

[0062] Implementation Method 2 Next, refer to Figure 4 Embodiment 2 of the present invention will be described. Figure 4 This diagram illustrates the operation of the rollers in the suspension device according to Embodiment 2 of the present invention. The suspension device of Embodiment 2 is configured such that the first roller 41 and the second roller 42 of the retaining member 4 can move towards or away from each other at the rear mounting portion 130. In this Embodiment 2, an example of the rollers moving along the thickness direction of the leaf spring will be described. Other components are the same structure as in the embodiment, and therefore descriptions are omitted.

[0063] Similar to Embodiment 1, in this Embodiment 2, the control device 200 controls the first roller 41. In step S102, when the control device 200 sets the moving direction and amount of the rollers, it sets the moving amount of the first roller 41 and the second roller 42 in each direction.

[0064] In addition, the movement amount of both the first roller 41 and the second roller 42 can be set, or the movement amount of only one roller can be set.

[0065] Then, after setting the direction and amount of movement of the rollers, the control device 200 performs roller movement control and changes the position of the rollers (step S103). At this time, when the rollers are moved closer to each other, although the change in the spring coefficient or the height of the vehicle body off the ground is small, the friction between the leaf spring 2 and the rollers, and the friction between the plates when the leaf spring 2 is a stacked leaf spring, increases, thereby increasing the damping force.

[0066] Similar to the embodiments described above, in this embodiment 2, which deforms according to the vibration of the axle 100, one end of the leaf spring 2 is locked to the vehicle body (here, the frame 110), while the other end is held by the first roller 41 and the second roller 42. The first roller 41 and the second roller 42 rotate according to the displacement of the other end caused by the deformation. According to this embodiment 2, the rotation of the rollers suppresses the generation of friction between the leaf spring 2 and the retaining member 4, thereby suppressing the reduction in durability and the generation of noise caused by friction between the leaf spring and the retaining member.

[0067] Furthermore, according to this embodiment 2, the position of the roller on the other end side (the rear mounting part 130) of the leaf spring 2 is changed relative to one end side (the front mounting part 120), so the damping force of the leaf spring 2 can be changed according to the scenario.

[0068] The foregoing has described the methods for implementing the present invention, but the present invention should not be limited to the above embodiments. Although the structure connecting the axle 100 and the leaf spring 2 via the U-bolt 150 has been described in the above embodiments and modifications, a structure without the U-bolt, for example, where the axle 100 and the leaf spring 2 are directly connected, may also be used. Furthermore, although the structure in embodiments 1, 2 and modifications above uses a structure in which the leaf spring 2 is positioned higher than the axle 100, a structure in which the leaf spring 2 is positioned lower than the axle 100 may also be used.

[0069] Alternatively, embodiments 1 and 2 can be combined to form a structure that allows the roller to move in a two-dimensional plane at the rear mounting portion 130. Furthermore, the roller can also be allowed to move axially along the shaft portion, forming a structure that allows the roller to move in three-dimensional space. By moving the roller to a position where the leaf spring 2's lateral movement in the vehicle is restricted, the lateral stiffness of the suspension unit consisting of the leaf spring 2, the locking member 3, and the retaining member 4 can be increased, or the wheel orientation relative to the vehicle's direction of travel can be changed.

[0070] Furthermore, in embodiments 1, 2, and their variations, examples of controlling the movement of the roller via the control device 200 were described, but the structure could also be configured such that the user manually changes the position of the roller. In the case of a manual configuration, the suspension system 10 is composed of the suspension device 1. In this case, position adjustment components or the like can also be provided in the roller, etc.

[0071] In addition, in embodiments 1, 2 and their variations, the following structure may also be adopted: a rotary table supporting the first roller 41 and the second roller 42 is provided in the rear mounting part 130, and the first roller 41 and the second roller 42 rotate (revolve) around the rotation axis of the rotary table.

[0072] In addition, in embodiments 1, 2 and modified examples, a protrusion protruding from the rotating part can be provided at the end of the roller opposite to the rear mounting part 130 side to suppress the leaf spring 2 from falling off.

[0073] Furthermore, in some embodiments, a roller may be provided as a non-rotating retaining member (equivalent to a pressing member). For example, a retaining member may be provided instead of the second roller 42, and the leaf spring 2 may be retained by the first roller 41 and the pressing member. In this case, the surface of the retaining member that contacts the leaf spring 2 may be curved, or a recess may be formed on the surface that contacts the leaf spring 2.

[0074] In addition, in the embodiments, a structure in which the first roller 41 and the second roller 42 are supported by shackles may also be adopted.

[0075] Thus, the present invention may include various embodiments not described herein, and various design changes may be made without departing from the technical concept defined by the scope of the claims.

[0076] Industrial applicability As explained above, the vehicle suspension system of the present invention is suitable for suppressing the reduction in durability and the generation of noise caused by friction between the leaf spring and the retaining component.

[0077] Symbol explanation: 1. Suspension system 2 leaf springs 3. Locking components 4. Retaining components 10 Suspension System 41 First Roller 42 Second Roller 41a First shaft section 41b First Rotating Part 42a Second shaft section 42b Second Rotating Part 100 axles 101 Wheels 110 Frame 120 Front Installation Section 130 Rear Installation Department 140 Washer 150 U-bolt 160 housing 200 Control device.

Claims

1. A vehicle suspension system, characterized in that, have: Leaf spring; A locking component, which locks one end of the leaf spring; and A retaining component for retaining the other end of the leaf spring. The retaining component has: A roller that holds the other end of the leaf spring and rotates freely with the displacement of the other end of the leaf spring; as well as The pressing component is opposite to the roller. The other end of the leaf spring is located between the roller and the pressing component. The roller and the pressing member are configured to change the contact pattern between the roller and the pressing member and the leaf spring.

2. The vehicle suspension system according to claim 1, characterized in that, The other end of the leaf spring is clamped and held by the roller and the pressing component.

3. The vehicle suspension system according to claim 1, characterized in that, The roller and the pressing component are movable in a fixed relative position to each other.

4. The vehicle suspension system according to claim 1, characterized in that, At least one of the roller and the pressing component is movable.

5. The vehicle suspension system according to claim 1, characterized in that, The roller and / or the pressing component are movable in the general longitudinal direction of the vehicle.

6. The vehicle suspension system according to claim 1 or 5, characterized in that, The roller and / or the pressing component are capable of moving along the general vertical direction of the vehicle.

7. The vehicle suspension system according to claim 1, characterized in that, It also has: A control device that controls the movement of the roller and / or the pressing component.

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