Suspension device of off-road vehicle

Abstract

The utility model discloses a suspension device of an off-road vehicle, the suspension device comprises an elastic piece and an axle, when the axle moves back and forth or left and right in a complex terrain in a complex driving condition of the off-road vehicle, the elastic piece can move back and forth or left and right in the complex terrain. The relative acting force between the elastic part and the axle is transmitted to the relative impact of the second convex part and the first accommodating groove, correspondingly, the first connecting part does not bear the shearing force generated by the relative displacement between the elastic part and the axle, and the relative matching between the second convex part and the elastic part keeps the connection stability between the elastic part and the axle; and during high-frequency operation under complex working conditions, even if impact forces in different directions are repeatedly generated, the reliable connection between the elastic piece and the axle can resist shearing force borne by the position, connection stability is kept, and the elastic connection structure is suitable for off-road vehicles with more complex driving environments.

Description

Technical Field

[0001] The present application relates to the technical field of off-road vehicle suspension, and in particular to a suspension device for an off-road vehicle. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present disclosure. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present disclosure.

[0003] In off-road vehicle elastic suspensions, the elastic element is often connected to the steering axle using a center bolt and a center hole. This positioning method is less stable and prone to lateral axle movement, causing suspension instability. Furthermore, it increases the lateral shear force on the center bolt, reducing the service life of the elastic element. For off-road vehicles, the complex road conditions can exacerbate suspension vibration. The prolonged impact loads and lateral axle movement on the elastic element can accelerate fatigue fracture of the center bolt. Utility Model Content

[0004] In view of the defects existing in the prior art, the present application provides a suspension device for an off-road vehicle to solve the problems of unstable connection and short service life between the elastic parts and the axle in the prior art.

[0005] The above-mentioned purpose of this application is mainly achieved through the following technical solutions:

[0006] A suspension device for an off-road vehicle, characterized in that the suspension device comprises:

[0007] An elastic member, wherein a first receiving groove is provided on one side of the elastic member, a first connecting portion is provided through the center of the elastic member, and one end of the first connecting portion extends into the first receiving groove;

[0008] The axle is arranged under the elastic member and is used to support the elastic member. The axle is provided with a second protrusion that can cooperate with the first receiving groove. The second protrusion is provided with a second receiving groove, and when the second protrusion is engaged with the first receiving groove, the end of the first connecting part extends into the second receiving groove.

[0009] In an optional embodiment, the elastic member is provided with relatively parallel limiting side plates, the first accommodating groove is formed between the relatively parallel limiting side plates, and the limiting side plates are blocked on both sides of the second protrusion.

[0010] In an optional embodiment, two groups of the limiting side plates are provided, and they enclose and form the first accommodating groove.

[0011] In an optional embodiment, a clearance fit is adopted between the first connecting portion and the second accommodating groove.

[0012] In an optional embodiment, the depth of the second accommodating groove is smaller than the depth of the first accommodating groove.

[0013] In an optional embodiment, the first connecting portion adopts a bolt, and the second receiving groove has at least one set of parallel clamping surfaces for fitting against the side wall on the end of the first connecting portion to limit the rotation of the first connecting portion.

[0014] In an optional embodiment, the suspension device further includes two U-shaped members respectively hooked on the elastic member, and two detachably connected locking members are provided on the open sides of the two U-shaped members, and the locking members can be pressed on the side of the axle away from the elastic member.

[0015] In an optional embodiment, the U-shaped member is threadedly connected to the locking member.

[0016] In an optional embodiment, one U-shaped member is connected to each end of the locking member.

[0017] In an optional embodiment, a cover plate is provided between the elastic member and the U-shaped member, and a positioning groove for hanging the U-shaped member is provided on the cover plate.

[0018] Compared with the prior art, the advantages of this application are:

[0019] The suspension device in the present application includes an elastic member and an axle, a first receiving groove is provided on one side of the elastic member, a first connecting portion is provided through the center of the elastic member, and one end of the first connecting portion extends into the first receiving groove, the axle is arranged under the elastic member and is used to carry the elastic member, a second protrusion is provided on the axle that can cooperate with the first receiving groove, a second receiving groove is provided on the second protrusion, and when the second protrusion is fitted into the first receiving groove, the end of the first connecting portion extends into the second receiving groove, the elastic member and the axle are arranged in the above-mentioned assembly relationship, and in actual operation, the vehicle is in a complex driving state of the off-road vehicle. During working conditions, when the axle jumps forward and backward or left and right in complex terrain, the relative force between the elastic part and the axle is transmitted to the relative impact between the second protrusion and the first receiving groove. Correspondingly, the first connecting part does not bear the shear force generated by the relative displacement between the elastic part and the axle, and the relative cooperation between the second protrusion and the elastic part maintains the stability of the connection between the elastic part and the axle to maintain overall reliability. During high-frequency operations under complex working conditions, even when impact forces in different directions are repeatedly generated, the reliable connection between the elastic part and the axle can resist the shear force at this location and maintain a stable connection. It is suitable for off-road vehicles with more complex driving environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A structural diagram of a suspension device is provided for an embodiment of the present application;

[0022] Figure 2 A partial cross-sectional view of a first position of a suspension device is provided for an embodiment of the present application;

[0023] Figure 3 A partial cross-sectional view of a second position of a suspension device is provided for an embodiment of the present application;

[0024] In the figure: 101, elastic member; 102, first accommodating groove; 103, first connecting portion; 201, axle; 202, second protrusion; 203, second accommodating groove; 204, limiting side plate; 301, U-shaped member; 302, locking member; 303, cover plate; 304, positioning groove. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid understanding of the present invention and does not constitute a limitation of the present invention. The specific structural and functional details disclosed herein are merely intended to describe exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms, and should not be construed as being limited to the embodiments described herein.

[0026] Off-road vehicles (SUVs) and sedans differ significantly in their design objectives, structural features, and performance specifications. The following are key comparisons: 1. Design Purpose and Usage: SUVs are primarily designed to handle complex, unpaved roads and harsh environments, and possess excellent maneuverability, traction, and gradeability. They are typically suitable for outdoor adventures, off-road driving, and as versatile vehicles suitable for both urban and rural areas. Sedans are designed to provide a comfortable and smooth driving experience in both urban and highway environments, making them suitable for daily commuting, business trips, and long-distance travel, with passenger comfort and a premium experience at the forefront. 2. Ride Height and Suspension: SUVs typically have a higher ride height and a suspension system with greater travel and impact resistance, using independent or multi-link suspension to ensure wheel contact and vehicle stability in complex terrain. Sedans have a lower ride height and softer suspension tuning, emphasizing driving stability and comfort. They have shorter suspension travel and are more suitable for driving on flat surfaces. 3. Handling and Stability: Due to their higher center of gravity, SUVs offer slightly inferior handling and stability at high speeds compared to sedans. They also have a larger turning radius and greater body lean during tight turns. The car has a low body, a low center of gravity, high steering sensitivity, good high-speed driving stability, and better body posture control when turning.

[0027] Off-road vehicles operate under a wide range of complex and demanding on- and off-road conditions, including but not limited to the following typical conditions: 1. Rough Mountain Roads: Driving on mountainous terrain, hills, and steep slopes requires strong climbing ability and torque output, as well as excellent grip and traction. 2. Muddy and Wetland: Driving on rainy, muddy terrain, swamps, and shallow riverbanks requires an efficient four-wheel drive system and good ground clearance, as well as tires and anti-skid control systems to prevent the vehicle from sinking into the mud. 3. Desert and Gravel: Driving on desert, Gobi, or sandy terrain requires overcoming the effects of soft sand on wheel adhesion. Therefore, appropriate tire pressure settings, wide tires that provide good traction on sand, and a high-torque engine are required. 4. Rock Climbing: Traversing rocky and extremely rugged terrain requires strong approach, departure, and breakover angles, as well as hardware support such as a short-travel suspension system and differential locks to facilitate navigating obstacles and climbing steep rocky terrain. 5. Snow and Ice: When driving on snow-covered roads, vehicles must be equipped with snow driving mode, winter tires, and electronic aids such as anti-lock braking systems (ABS) and traction control systems (TCS) to ensure driving safety. 6. Extreme Water: When crossing deep water, vehicles must have a high degree of waterproof sealing and sufficient engine air intake height to prevent the vehicle from stalling or damaging electronic equipment during wading. 7. Long-Distance Travel: When traveling far from cities, through uninhabited areas, or on expeditions, off-road vehicles must have good endurance, reliability, and the ability to adapt to extreme weather conditions.

[0028] Figure 1 A structural diagram of a suspension device is provided for an embodiment of the present application. Figure 2 A partial cross-sectional view of a suspension device in a first position is provided for an embodiment of the present application. Figure 3 A partial cross-sectional view of a second position of a suspension device is provided for an embodiment of the present application.

[0029] like Figure 1 、 Figure 2 as well as Figure 3 As shown, a suspension device for an off-road vehicle is characterized in that the suspension device includes an elastic member 101 and an axle 201, wherein:

[0030] like Figure 2 、 Figure 3 As shown, a first receiving groove 102 is provided on one side of the elastic member 101 , a first connecting portion 103 is provided through the center of the elastic member 101 , and one end of the first connecting portion 103 extends into the first receiving groove 102 .

[0031] The first accommodating groove 102 is arranged on the side of the elastic member 101 close to the axle 201, and can be arranged on one side of the elastic member 101 through pre-processing, and the first connecting part 103 is set through the center of the elastic member 101, so that multiple steel plate sheets are formed into an integral elastic member 101, and the first connecting part 103 is detachably connected to the elastic member 101. In order to maintain the reliability of the disassembly and assembly of the elastic member 101, and the operability of the disassembly and assembly of the first connecting part 103, the two ends of the first connecting part 103 will protrude from the top and bottom surfaces of the elastic member 101 respectively, wherein one end of the first connecting part 103 extends into the first accommodating groove 102.

[0032] The elastic member 101 is an elastic element used in the vehicle suspension system. Specifically, a leaf spring can be used as the elastic member 101. The leaf spring is composed of several steel sheets with a certain curvature stacked together to form an integral elastic beam. The main functions of the leaf spring are: 1. To withstand and alleviate the various impacts and vibrations generated by the vehicle during driving. Through its own elastic deformation, it absorbs the bumps caused by uneven ground, thereby ensuring the smoothness and comfort of the vehicle's driving. 2. To provide a certain load-bearing capacity, that is, to support the load between the axle 201 and the frame, maintain good contact between the wheels and the road surface, and ensure stable driving of the vehicle. The ends of the leaf spring are usually fixed to the frame (or vehicle body) and the axle 201. When the vehicle is subjected to force, the leaf spring will bend and deform, converting the vertical force into bending force. The leaf spring will use its own elastic force to mitigate the impact. After the external force is removed, it will return to its original state and continue to support the weight of the vehicle body and cargo. In addition, the design and quantity of leaf springs will affect the stiffness and comfort of the vehicle. Reasonable design of leaf springs can better balance the vehicle's driving stability and ride comfort.

[0033] like Figure 1 、 Figure 2 as well as Figure 3 As shown, the axle 201 is arranged under the elastic member 101 and is used to support the elastic member 101. The axle 201 is provided with a second protrusion 202 that can cooperate with the first accommodating groove 102. The second protrusion 202 is provided with a second accommodating groove 203, and when the second protrusion 202 is engaged with the first accommodating groove 102, the end of the first connecting portion 103 extends into the second accommodating groove 203.

[0034] The axle 201 is supported on the middle part of the elastic member 101, and the second protrusion 202 on the axle 201 cooperates with the first receiving groove 102. After the assembly is completed, the outer wall of the second protrusion 202 fits with the inner wall of the first receiving groove 102, maintaining a reliable matching relationship between the axle 201 and the elastic member 101. The second receiving groove 203 preset on the second protrusion 202 provides an accommodating space for the end of the first connecting portion 103, so that the second protrusion 202 can be more stably and reliably matched in the first receiving groove 102.

[0035] In an optional embodiment, the working principle of the suspension device in the present application is: the suspension device includes an elastic member 101 and an axle 201, a first receiving groove 102 is provided on one side of the elastic member 101, a first connecting portion 103 is provided through the center of the elastic member 101, and one end of the first connecting portion 103 extends into the first receiving groove 102, the axle 201 is arranged under the elastic member 101, and is used to support the elastic member 101, a second protrusion 202 is provided on the axle 201, which can cooperate with the first receiving groove 102, and a second receiving groove 203 is provided on the second protrusion 202, and when the second protrusion 202 is fitted into the first receiving groove 102, the end of the first connecting portion 103 extends into the second receiving groove 203, and the elastic member 101 and the axle 201 are arranged as described above. The matching relationship is arranged. During actual operation, in the complex driving conditions of the off-road vehicle, when the axle 201 jumps in the front and rear or left and right directions in the complex terrain, the relative force between the elastic member 101 and the axle 201 is transmitted to the relative impact between the second protrusion 202 and the first accommodating groove 102. Correspondingly, the first connecting portion 103 does not bear the shear force generated by the relative displacement between the elastic member 101 and the axle 201, and the relative matching between the second protrusion 202 and the elastic member 101 maintains the connection stability between the elastic member 101 and the axle 201 to maintain the overall reliability. During high-frequency operation under complex working conditions, even when impact forces in different directions are repeatedly generated, the reliable connection between the elastic member 101 and the axle 201 can resist the shear force at this location and maintain a stable connection. It is suitable for off-road vehicles with more complex driving environments.

[0036] like Figure 2 as well as Figure 3 As shown, in an optional embodiment, the elastic member 101 is provided with relatively parallel limiting side plates 204 , the first accommodating groove 102 is formed between the relatively arranged limiting side plates 204 , and the limiting side plates 204 are blocked on both sides of the second protrusion 202 .

[0037] By fixing the limiting side plate 204 on one side of the elastic member 101 as a whole, a first accommodating groove 102 is formed between the relatively parallel limiting side plates 204, and then the relatively arranged limiting side plates 204 form a blockage for the second protrusion 202 in this direction, thereby limiting the relative movement of the axle 201 and the elastic member 101 in this direction, and the arrangement of the limiting side plates 204 is flexible and reliable.

[0038] like Figure 2 as well as Figure 3 As shown, in an optional embodiment, two groups of the limiting side plates 204 are provided to enclose and form the first accommodating groove 102 .

[0039] Correspondingly, in different directions in the horizontal position, the reliability between the elastic member 101 and the axle 201 is maintained by providing two groups of limiting side plates 204, each group of limiting side plates 204 being two relatively parallel, and the two groups of limiting side plates 204 are arranged in pairs relatively parallel to each other to enclose and form the first accommodating groove 102, and then in different directions, the second protrusion 202 can be blocked and restricted by the limiting side plates 204 to maintain the stability of the relative position between the elastic member 101 and the axle 201 in dynamic working conditions.

[0040] like Figure 2 as well as Figure 3 As shown, in an optional embodiment, a clearance fit is adopted between the first connection portion 103 and the second receiving groove 203, and the space in the second receiving groove 203 reserves a gap after the first connection portion 103 extends into the second receiving groove 203, so that after the second protrusion 202 and the first receiving groove 102 are stably fitted, the first connection portion 103 remains in a non-contact state, thereby improving the stability of the first connection portion 103, avoiding the first connection portion 103 from being subjected to external force, and avoiding the existence of a force transmission path between the first connection portion 103 and the second protrusion 202.

[0041] like Figure 2 as well as Figure 3 As shown, in an optional embodiment, the depth of the second receiving groove 203 is less than the depth of the first receiving groove 102, that is, after the matching relationship between the second protrusion 202 and the first receiving groove 102 is completed, the shear force formed between the axle 201 and the elastic member 101 appears at the connection between the second protrusion 202 and the axle 201, that is, at the opening of the first receiving groove 102. The depth of the second receiving groove 203 is set to be less than the depth of the first receiving groove 102. Then, on the horizontal plane at the opening of the first receiving groove 102, the cross-sectional area of ​​the second protrusion 202 is larger, thereby obtaining a more stable structural strength, thereby improving the overall structural performance and life.

[0042] like Figure 2 as well as Figure 3 As shown, in an optional embodiment, the first connecting portion 103 adopts a bolt, and the second receiving groove 203 has at least one set of parallel clamping surfaces for fitting the side wall on the end of the first connecting portion 103 to limit the rotation of the first connecting portion 103. One end of the bolt has an operating clamping working surface. After the second protrusion 202 extends into the first receiving groove 102, the end of the first connecting portion 103 extends into the second receiving groove 203 accordingly. The corresponding clamping surface in the second receiving groove 203 fits with the working surface of the bolt end to limit the rotation of the bolt, making it easier to operate the other end of the bolt to tighten the elastic member 101, thereby improving operability.

[0043] like Figure 1、 Figure 2 as well as Figure 3 As shown, in an optional embodiment, the suspension device further includes two U-shaped members 301 respectively hooked on the elastic member 101, and the open sides of the two U-shaped members 301 are provided with two detachably connected locking members 302, and the locking members 302 can be pressed on the side of the axle 201 away from the elastic member 101.

[0044] Two U-shaped parts 301 are respectively pressed onto the elastic part 101, and the open side of the U-shaped part 301 is buckled by the locking part 302. After the operating locking part 302 is pressed onto the side of the axle 201 away from the elastic part 101, the U-shaped part 301 and the locking part 302 further limit the separation of the elastic part 101 and the axle 201, thereby improving the overall stability.

[0045] like Figure 1 、 Figure 2 as well as Figure 3 As shown, in an optional embodiment, the U-shaped member 301 is threadedly connected to the locking member 302 to facilitate flexible disassembly and assembly.

[0046] In an optional embodiment, the locking member 302 is connected to a U-shaped member 301 at each end. By cross-installing or parallel installing the locking member 302, it can be more reliably pressed onto the axle 201 to maintain the reliability of the connection between the axle 201 and the elastic member 101.

[0047] like Figure 1 、 Figure 2 as well as Figure 3 As shown, in an optional embodiment, a cover plate 303 is provided between the elastic member 101 and the U-shaped member 301, and a positioning groove 304 for hanging the U-shaped member 301 is provided on the cover plate 303. The cover plate 303 is pressed on the top of the elastic member 101, and the U-shaped member 301 is pressed into the positioning groove 304 on the cover plate 303 to prevent relative displacement of the U-shaped member 301 and avoid deformation caused by the U-shaped member 301 being directly pressed on the elastic member 101, thereby improving operation stability.

[0048] It should be understood that the terms first, second, etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the exemplary embodiments of the present invention.

[0049] It should be understood that the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0050] It should be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside", etc. indicate the orientation or position relationship, which is the orientation or position relationship in which the disclosed product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0051] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0052] The terms used herein are used only to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "include", "comprising", "including", and / or "comprising" when used herein specify the presence of the claimed features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or their combinations.

[0053] In the following description, certain details are provided to facilitate a thorough understanding of the exemplary embodiments. However, one of ordinary skill in the art will appreciate that the exemplary embodiments may be practiced without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail in order to avoid obscuring the exemplary embodiments.

[0054] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

[0055] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

Claims

1. A suspension device for an off-road vehicle, characterized in that: The suspension device comprises: An elastic member, wherein a first receiving groove is provided on one side of the elastic member, a first connecting portion is provided through the center of the elastic member, and one end of the first connecting portion extends into the first receiving groove; A vehicle axle, the vehicle axle is arranged under the elastic member and is used to support the elastic member, the vehicle axle is provided with a second protrusion that can cooperate with the first receiving groove, the second protrusion is provided with a second receiving groove, and when the second protrusion is matched into the first receiving groove, the end of the first connecting part extends into the second receiving groove.

2. The suspension device for an off-road vehicle as claimed in claim 1, characterized in that: The elastic member is provided with limiting side plates which are arranged relatively in parallel, the first accommodating groove is formed between the limiting side plates which are arranged relatively in parallel, and the limiting side plates are blocked at two sides of the second protrusion.

3. The suspension device for an off-road vehicle as claimed in claim 2, characterized in that: The limiting side plates are provided in two groups and enclose to form the first accommodating groove.

4. The suspension device for an off-road vehicle as claimed in claim 1, characterized in that: The first connecting portion and the second containing groove are clearance-fitted.

5. The suspension device for an off-road vehicle as claimed in claim 1, characterized in that: The depth of the second accommodation groove is smaller than the depth of the first accommodation groove.

6. The suspension device for an off-road vehicle as claimed in claim 1, characterized in that: The first connection part adopts a bolt, and the second containing groove has at least one set of parallel clamping surfaces for fitting against the side wall on the end of the first connection part to limit the rotation of the first connection part.

7. The suspension device for an off-road vehicle as claimed in claim 1, characterized in that: The suspension device also includes two U-shaped members respectively hooked on the elastic members, and two detachably connected locking members are arranged on the open sides of the two U-shaped members. The locking members can be pressed on a side of the axle away from the elastic member.

8. The suspension device for an off-road vehicle as claimed in claim 7, characterized in that: The U-shaped member is threadedly connected to the locking member.

9. The suspension device for an off-road vehicle as claimed in claim 7, characterized in that: Two ends of the locking member are respectively connected to a U-shaped member.

10. The suspension device for an off-road vehicle as claimed in claim 7, characterized in that: A cover plate is provided between the elastic member and the U-shaped member, and a positioning groove for hanging the U-shaped member is provided on the cover plate.

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