CN219044259U - Front suspension of baha racing car and baha racing car - Google Patents

Abstract

The embodiment of the present application belongs to the technical field of Baja racing cars, and relates to a front suspension of Baja racing cars. Baja racing cars include a vehicle frame, a wheel hub and a drive shaft. The front suspension is connected to the wheel hub, and the front suspension includes a first swing arm assembly, a second swing arm assembly and a shock absorber assembly; the first swing arm assembly and the second swing arm assembly are respectively connected between the vehicle frame and the wheel hub, and the first The swing arm assembly and the second swing arm assembly are located on both sides in the radial direction of the drive shaft; the shock absorber assembly is connected between the first swing arm assembly and the vehicle frame, and the shock absorber assembly is located at the side of the first swing arm assembly away from the drive shaft side. The present application also relates to a Baja racing car. The technical solution provided by the application can ensure the performance of the original front suspension, avoid the interference of the drive shaft and the shock absorbing assembly, and adapt to the four-wheel-drive transmission scheme of the Baja racing car.

Description

A front suspension of a Baja racing car, a Baja racing car

technical field

The present application relates to the technical field of Baja racing cars, and more specifically, to a front suspension of Baja racing cars and Baja racing cars.

Background technique

With the promotion and localization adjustment of college students' Baja racing cars in China, the racing cars need to face various harsh terrains and need to cross complex road conditions during the race, and the suspension is used as a force transmission device between the racing car and the ground , is a vital structure in the design of Baja racing cars.

As the current event organizers increase the difficulty of the competition, the traditional rear-drive Baja racing car is difficult to cope with the difficulty of the competition. Therefore, the four-wheel drive Baja racing car has gradually replaced the traditional rear-drive Baja racing car. The front suspension design of Harbin racing cars often interferes with the drive axle of the front axle, so it cannot be adapted to four-wheel drive Baja racing cars.

Utility model content

The technical problem to be solved by the embodiment of the present application is that the existing front suspension structure cannot be adapted to the use of the four-wheel drive Baja racing car.

In order to solve the above technical problems, the embodiment of the present application provides a front suspension of a Baja racing car, which adopts the following technical solution:

A front suspension of a Baja racing car, the Baja racing car includes a vehicle frame, a wheel hub and a drive shaft, the front suspension is connected between the vehicle frame and the wheel hub, and the drive shaft passes through the The front suspension is connected to the wheel hub, and the front suspension includes a first swing arm assembly, a second swing arm assembly and a shock absorber assembly;

The first swing arm assembly and the second swing arm assembly are respectively connected between the vehicle frame and the hub, the first swing arm assembly is located above the drive shaft and the second swing arm assembly is located above the drive shaft. Both sides in the radial direction of the shaft;

The shock absorber assembly is connected between the first swing arm assembly and the vehicle frame, and the shock absorber assembly is located on a side of the first swing arm assembly away from the drive shaft.

Further, the first swing arm assembly includes a first connecting rod, a second connecting rod and a first connecting piece, the head end of the first connecting rod is connected to the hub, and the head end of the first connecting rod The head end of the second connecting rod is respectively connected to both sides of the first connecting member, and the tail end of the first connecting rod and the tail end of the second connecting rod are respectively connected to the vehicle frame;

The second swing arm assembly includes a third connecting rod, a fourth connecting rod, and a second connecting member. The head end of the second connecting rod is connected to the hub, and the head end of the third connecting rod is connected to the hub. The head end of the fourth connecting rod is respectively connected to both sides of the second connecting member, and the tail end of the third connecting rod and the tail end of the fourth connecting rod are respectively connected to the vehicle frame;

The head end of the first connecting rod and the head end of the second connecting rod are respectively connected to both sides of the first connecting member to form a first swing arm assembly in a herringbone rod structure;

The head end of the third connecting rod and the head end of the fourth connecting rod are respectively connected to two sides of the second connecting member to form a second swing arm assembly in a herringbone rod structure.

Further, the first connecting rod and the second connecting rod are arranged at a first set angle _θ1 ; and/or

The second set angle _θ2 is arranged between the third connecting rod and the fourth connecting rod;

The range of the first set angle θ ₁ is θ ₁ <90°, and the range of the second set angle θ ₂ is θ ₂ <90°.

Further, the first swing arm assembly is provided with two lifting lugs symmetrically arranged, and the two lifting lugs are respectively set on the first connecting rod and the second connecting rod, and the shock absorbing component is hinged on between the two lifting lugs;

The other end of the shock absorbing assembly is provided with a first hinge, and the shock absorbing assembly is hinged to the vehicle frame through the first hinge.

Further, the tail of the first connecting rod is provided with a first bush, and the tail of the second connecting rod is provided with a second bush, and the first bush and the second bush are coaxial along the first axis set up;

The tail of the third connecting rod is provided with a third bush, the tail of the fourth connecting rod is provided with a fourth bush, and the third bush and the fourth bush are arranged coaxially along the second axis ;

The first swing arm assembly is hinged to the frame through the first bushing and the second bushing, the first swing arm assembly rotates around the first axis relative to the frame, the The second swing arm assembly is hinged to the frame through the third bushing and the fourth bushing, and the second swing arm assembly rotates around the second axis relative to the frame.

Further, a third set angle θ ₃ is arranged between the first axis and the horizontal plane, and the range of the third set angle θ ₃ is 0°<θ ₃ <20°; and/or

A fourth set angle θ ₄ is arranged between the second axis and the horizontal plane, and the range of the fourth set angle θ ₄ is 0°<θ ₄ <20°.

Further, the first axis and the second axis are arranged at a fifth set angle θ ₅ , and the fifth set angle θ ₅ is in a range of 0°<θ ₅ <10°.

Further, the first swing arm assembly further includes a second hinge, and the second swing arm assembly further includes a third hinge;

The second hinge is arranged horizontally, one end of the second hinge is connected to the first connecting piece, and the other end is mounted on the hub through a fixing piece, and the second hinge can rotate relative to the hub ;

The third hinge is placed horizontally, one end of the third hinge is connected to the second connecting piece, and the other end is mounted on the hub through a fixing piece, and the third hinge can rotate relative to the hub .

Further, the front suspension also includes a stabilizer bar, and the two ends of the stabilizer bar are respectively hinged to the vehicle frame and the wheel hub.

In order to solve the above technical problems, the embodiment of the present application further provides a Baja racing car, the Baja racing car includes the above-mentioned front suspension.

Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

In the embodiment of the present application, by changing the installation point of the shock absorber assembly, when the drive shaft passes through the front suspension and is connected to the wheel hub transmission, it avoids interference with the structure of the front suspension. While ensuring the performance of the original suspension, A sufficient space is left between the first swing arm assembly and the second swing arm assembly for installation of the drive shaft, which is adapted to the four-wheel drive transmission scheme.

Description of drawings

In order to illustrate the solution of the present application more clearly, a brief introduction will be given below to the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present application. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is the structural representation of the front suspension of the present application;

Fig. 2 is the side view of the front suspension of the present application;

Fig. 3 is a schematic structural view of the first swing arm assembly of the present application;

Fig. 4 is a schematic structural diagram of a second swing arm assembly of the present application.

Reference signs:

1. The first swing arm assembly; 11. The first connecting rod; 12. The second connecting rod; 13. The first connecting piece; 14. The first bushing; 15. The second bushing; 16. Lifting lug; 17. 2. The second swing arm assembly; 21. The third connecting rod; 22. The fourth connecting rod; 23. The second connecting piece; 24. The third bushing; 25. The fourth bushing; 26. 3. The shock absorbing component; 31. The first hinge; 4. The hub; 41. The first fixing part; 42. The second fixing part; 5. The drive shaft.

Detailed ways

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the application; the terms used herein in the description of the application are only for the purpose of describing specific embodiments , is not intended to limit the present application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and the description of the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the description and claims of the present application or the above drawings are used to distinguish different objects, rather than to describe a specific order.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

Example of the front suspension of this application Baja racing car

Please refer to shown in Fig. 1, the front suspension of the Baja racing car of the present application is connected between the vehicle frame (not shown in the figure) and the hub 4, and the drive shaft 5 passes through the front suspension and is connected with the hub 4, so The front suspension includes a first swing arm assembly 1 , a second swing arm assembly 2 , and a shock absorber assembly 3 .

The first swing arm assembly 1 and the second swing arm assembly 2 are respectively connected between the vehicle frame and the hub 4, and the first swing arm assembly 1 and the second swing arm assembly 2 are located in the Both sides in the radial direction of the drive shaft 5, in this embodiment, the first swing arm assembly 1 and the second swing arm assembly 2 are respectively connected between the vehicle frame and the hub 4, the The first swing arm assembly 1 is located above the drive shaft 5, and the second swing arm assembly 2 is located below the drive shaft 5;

The shock absorber assembly 3 is connected between the first swing arm assembly 1 and the vehicle frame, and the shock absorber assembly 3 is located on the side of the first swing arm assembly 1 away from the drive shaft 5 . In this embodiment, the shock absorbing assembly 3 is located above the first swing arm assembly 1 .

In the embodiment of the present application, the front suspension is arranged above the first swing arm assembly 1 by changing the installation point of the shock absorber assembly 3, so that the drive shaft 5 passes through the first swing arm assembly 1 and the second swing arm assembly. When the arm assembly 2 is connected to the wheel hub 4, interference with the shock absorber assembly 3 is avoided, and the original suspension performance is guaranteed, so that the first swing arm assembly 1 and the second swing arm assembly 2 There is enough space for the installation of the drive shaft 5, which is suitable for the transmission scheme of the four-wheel drive.

Please refer to Fig. 1 and Fig. 2, in this embodiment, the first swing arm assembly 1 includes a first connecting rod 11, a second connecting rod 12 and a first connecting member 13, and the first connecting rod 13 The head end of the first connecting rod 11 is connected to the hub 4, and the head end of the second connecting rod 12 is respectively connected to both sides of the first connecting member 13. The first connecting rod 11 and the tail end of the second connecting rod 12 are respectively connected with the vehicle frame.

The second swing arm assembly 2 includes a third connecting rod 21, a fourth connecting rod 22 and a second connecting member 23, the head end of the second connecting rod 23 is connected to the hub 4, and the third connecting rod The head end of 21 and the head end of the fourth connecting rod 22 are respectively connected with the two sides of the second connecting member 23, and the tail end of the third connecting rod 21 and the tail end of the fourth connecting rod 22 are respectively connected with The frame is connected.

Please refer to FIG. 3 , the head end of the first connecting rod 11 and the head end of the second connecting rod 12 are respectively connected to both sides of the first connecting member 13 to form a first connecting rod structure in a herringbone shape. The swing arm assembly 1, in this embodiment, the head end of the first connecting rod 11 and the head end of the second connecting rod 12 are respectively welded to the side wall of the first connecting piece 13, and the first connecting rod 12 A connecting rod 11 and the second connecting rod 12 are arranged at a first set angle θ ₁ , and the range of the first set included angle θ ₁ is θ ₁ <90°. In this embodiment, The first set angle θ ₁ is 47°.

Please refer to FIG. 4, the head end of the third connecting rod 21 and the head end of the fourth connecting rod 22 are respectively connected to both sides of the second connecting member 23 to form a second connecting rod in a herringbone structure. The swing arm assembly 2, in this embodiment, the head end of the third connecting rod 21 and the head end of the fourth connecting rod 22 are respectively welded to the side wall of the second connecting piece 23, the first The third connecting rod 21 and the fourth connecting rod 22 are arranged at a second set angle θ ₂ , and the range of the second set angle θ ₂ is θ ₂ <90°. In this embodiment, The second set angle θ ₂ is 43°.

In the embodiment of the present application, the first swing arm assembly 1 and the second swing arm assembly 2 are arranged in a herringbone rod structure, and the angle between the first connecting rod 11 and the second connecting rod 12 is set as It is the first set angle θ ₁ , and the third link 21 and the fourth link 22 are set as the second set angle θ ₂ , the first set angle θ ₁ and the second set angle The setting of the angle θ ₂ is close to but not the same, so that the front suspension structure has better structural strength, and the compactness of the front suspension structure setting is improved. When the Baja racing car turns sharply, the body can also maintain within a reasonable and safe range of roll angles.

Please refer to Fig. 2, the tail of the first connecting rod 11 is provided with a first bushing 14, and the tail of the second connecting rod 12 is provided with a second bushing 15, and the first bushing 14 and the first bushing 14 are connected to each other. Two bushings 15 are arranged coaxially along the first axis, the first swing arm assembly 1 is hinged to the vehicle frame through the first bushing 14 and the second bushing 15, and the first swing arm assembly 1 rotates relative to the vehicle frame about the first axis.

The tail of the third connecting rod 21 is provided with a third bush 24, and the tail of the fourth connecting rod 22 is provided with a fourth bush 25, and the third bush 24 and the fourth bush 25 are arranged along the The second axis is arranged coaxially, the second swing arm assembly 2 is hinged to the vehicle frame through the third bush 24 and the fourth bush 25, and the second swing arm assembly 2 revolves around the first The two axes rotate relative to the vehicle frame.

In this embodiment, the first axis and the horizontal plane are arranged at a third set angle θ ₃ ; the range of the third set angle is 0°<θ ₃ <20°, in this embodiment Among them, the third set angle θ ₃ is 8°.

The fourth set angle _θ4 is arranged between the second axis and the horizontal plane; the range of the fourth set angle _θ4 is 0°< _θ4 <20°. In this embodiment, the first 4. Set the included angle θ ₄ to be 6°.

The fifth set angle _θ5 is arranged between the first axis and the second axis; the range of the fifth set angle _θ5 is 0°< _θ5 <10°. In this embodiment, the The fifth set included angle θ ₅ is 2°.

In the embodiment of the present application, through the setting of the third set angle θ ₃ and the fourth set angle θ ₄ , the front suspension has better anti-brake nodding performance and anti-acceleration head-up performance, which improves the performance of the bar. Harbin car body stability.

Please refer to Figures 1 to 3, the first swing arm assembly 1 is provided with two lifting lugs 16 arranged symmetrically, and the two lifting lugs 16 are respectively arranged on the first connecting rod 11 and the second connecting rod 11. On the connecting rod 12, one end of the shock absorbing assembly 3 is hinged between the two lifting lugs 16. In this embodiment, the two lifting lugs 16 are respectively welded to the first connecting rod 11 and the second connecting rod. On the rod 12 and arranged symmetrically, one end of the shock absorbing assembly 3 is hinged between the two lifting lugs 16 .

The other end of the shock absorbing assembly 3 is provided with a first hinge 31 , and the shock absorbing assembly 3 is hinged to the vehicle frame through the first hinge 31 .

In the embodiment of the present application, by setting the shock absorber assembly 3 hinged above the first swing arm assembly 1, an avoidance arrangement is formed with the drive shaft 5 of the four-wheel drive Baja racing car, so as to avoid the shock absorber assembly 3 from colliding with the front when working. Interference is formed between the drive shafts 5, so that the front suspension of the present application can be adapted to the setting of the four-wheel-drive Baja racing car, and the setting of the shock absorbing component can maintain the vibration of the Baja racing car at a normal level at the same time, so as to avoid vibration damage to the front suspension.

Please refer to Figures 1 to 4, the first swing arm assembly 1 also includes a second hinge 17, the second hinge 17 is arranged horizontally, one end of the second hinge 17 is connected to the first The connecting part 13 is connected, and the other end is installed on the hub 4 through the first fixing part 41, and the second hinge part can rotate relative to the hub.

The second swing arm assembly 2 also includes a third hinge 26, the third hinge 26 is placed horizontally, one end of the third hinge 26 is connected to the second connecting piece 23, and the other end is fixed by the second The member 42 is mounted on the hub 4, and the third hinge member 26 can rotate relative to the hub 4.

In this embodiment, the second hinge 17 and the third hinge 26 are symmetrically distributed on the top and bottom of the hub 4 relative to the hub 4 .

In this embodiment, the second hinged part 17 and the third hinged part 26 are both fisheye bearings, the first fixing part 41 and the second fixing part 42 are both fixing bolts, and the fisheye bearings include bearings Outer shell and bearing rolling balls, the bearing rolling balls are arranged in the bearing outer shell, and the bearing outer shell also extends outward to form a mounting rod, and the fisheye bearing is connected to the first connecting member 13 or the first connecting member 13 or the first The two connecting parts 23 are connected; the center of the bearing rolling ball is pierced with a through hole, and the fixing bolt is connected to the wheel hub 4 through the mounting hole, and a ball pair structure is formed between the front suspension and the wheel hub.

In the embodiment of this application, the fisheye bearing is used as a hinge to connect the front suspension and the wheel hub to form a ball pair structure, which reduces the damage rate of the hinge while maintaining the suspension's own function. The service life of the front suspension is improved. In addition, with the setting that the first swing arm assembly 1 and the second swing arm assembly 2 are respectively hinged to the vehicle frame, the front suspension can improve the adaptability to various complex road conditions.

In this embodiment, the front suspension also includes a stabilizer bar (not shown in the figure), and the two ends of the stabilizer bar are respectively hinged with the vehicle frame and the wheel hub to improve the structural stability and workability of the front suspension. stability.

Example of this application Baja Racing

The application provides a Baja racing car, including a vehicle frame, a wheel hub, a drive shaft and the above-mentioned front suspension, the front suspension is connected between the vehicle frame and the wheel hub, and the drive shaft passes through the front suspension Connect with hub.

The Baja racing car in the embodiment of the present application includes the front suspension as shown above. By changing the installation point of the shock absorber assembly, when the drive shaft passes through the front suspension and is connected to the hub transmission, avoiding the structure of the front suspension Interference occurs, while ensuring the original suspension performance, there is enough space between the first swing arm assembly and the second swing arm assembly for the installation of the drive shaft, which is adapted to the four-wheel drive transmission scheme, which is convenient Improvements to 4WD Baja Racing.

Apparently, the embodiments described above are only some of the embodiments of the present application, but not all of them. The drawings show preferred embodiments of the present application, but do not limit the patent scope of the present application. The present application can be implemented in many different forms, on the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features . All equivalent structures made using the contents of the description and drawings of this application, directly or indirectly used in other related technical fields, are also within the scope of protection of this application.

Claims (10)

1. A front suspension of a Baja racing car, the Baja racing car includes a vehicle frame, a wheel hub and a drive shaft, the front suspension is connected between the vehicle frame and the wheel hub, and the drive shaft passes through The front suspension is connected to the wheel hub, and it is characterized in that the front suspension includes a first swing arm assembly, a second swing arm assembly and a shock absorber assembly; The first swing arm assembly and the second swing arm assembly are respectively connected between the vehicle frame and the hub, and the first swing arm assembly and the second swing arm assembly are located in the radial direction of the drive shaft. on both sides of the direction; The shock absorber assembly is connected between the first swing arm assembly and the vehicle frame, and the shock absorber assembly is located on a side of the first swing arm assembly away from the drive shaft. 2. The front suspension of the Baja racing car according to claim 1, wherein the first swing arm assembly comprises a first connecting rod, a second connecting rod and a first connecting member, and the first connecting member The head end of the first connecting rod is connected to the hub, the head end of the first connecting rod and the head end of the second connecting rod are respectively connected to both sides of the first connecting piece, and the tail end of the first connecting rod is connected to the first connecting rod. The tail end of the second connecting rod is respectively connected with the vehicle frame; The second swing arm assembly includes a third connecting rod, a fourth connecting rod and a second connecting piece, the head end of the second connecting piece is connected to the hub, the head end of the third connecting rod is connected to the The head end of the fourth connecting rod is respectively connected to both sides of the second connecting member, and the tail end of the third connecting rod and the tail end of the fourth connecting rod are respectively connected to the vehicle frame; The head end of the first connecting rod and the head end of the second connecting rod are respectively connected to both sides of the first connecting member to form a first swing arm assembly in a herringbone rod structure; The head end of the third connecting rod and the head end of the fourth connecting rod are respectively connected to two sides of the second connecting member to form a second swing arm assembly in a herringbone rod structure. 3. the front suspension of Baja racing car according to claim 2, is characterized in that, between described first connecting rod and described second connecting rod, be the first setting angle θ ₁ to arrange; And/or The second set angle _θ2 is arranged between the third connecting rod and the fourth connecting rod; The range of the first set angle θ ₁ is θ ₁ <90°, and the range of the second set angle θ ₂ is θ ₂ <90°. 4. The front suspension of the Baja racing car according to claim 2, characterized in that, the first swing arm assembly is provided with two lifting lugs arranged symmetrically, and the two lifting lugs are respectively arranged on the first On the connecting rod and the second connecting rod, the shock absorbing assembly is hinged between the two lifting lugs; The other end of the shock absorbing assembly is provided with a first hinge, and the shock absorbing assembly is hinged to the vehicle frame through the first hinge. 5. The front suspension of the Baja racing car according to claim 2, characterized in that, the tail of the first connecting rod is provided with a first bushing, and the tail of the second connecting rod is provided with a second bushing , the first bush and the second bush are arranged coaxially along the first axis; The tail of the third connecting rod is provided with a third bush, the tail of the fourth connecting rod is provided with a fourth bush, and the third bush and the fourth bush are arranged coaxially along the second axis ; The first swing arm assembly is hinged to the frame through the first bushing and the second bushing, the first swing arm assembly rotates around the first axis relative to the frame, the The second swing arm assembly is hinged to the frame through the third bushing and the fourth bushing, and the second swing arm assembly rotates around the second axis relative to the frame. 6. the front suspension of Baja racing car according to claim 5, is characterized in that, be the 3rd setting angle θ ₃ arrangements between described first axis and horizontal plane, described 3rd setting angle θ ₃ in the range of 0°<θ ₃ <20°; and/or A fourth set angle θ ₄ is arranged between the second axis and the horizontal plane, and the range of the fourth set angle θ ₄ is 0°<θ ₄ <20°. 7. The front suspension of the Baja racing car according to claim 6, characterized in that, the fifth setting angle _θ5 is arranged between the first axis and the second axis, and the fifth setting clip The range of angle θ ₅ is 0°<θ ₅ <10°. 8. The front suspension of the Baja racing car according to claim 2, wherein the first swing arm assembly also includes a second hinge, and the second swing arm assembly also includes a third hinge; The second hinge is arranged horizontally, one end of the second hinge is connected to the first connecting piece, and the other end is installed on the hub through the first fixing piece, the second hinge can be opposite to the hub rotation; The third hinge is placed horizontally, one end of the third hinge is connected to the second connecting piece, and the other end is installed on the hub through the second fixing piece, the third hinge can be opposite to the The hub turns. 9. The front suspension of the Baja racing car according to claim 1, characterized in that, the front suspension also includes a stabilizer bar, and the two ends of the stabilizer bar are respectively hinged with the vehicle frame and the wheel hub. 10. A Baja racing car, characterized in that it comprises the front suspension according to any one of claims 1-9.

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