RV chassis frame

Abstract

This utility model discloses a motorhome chassis frame, belonging to the field of motorhome manufacturing technology. The utility model includes a chassis frame, spring shock absorbers, and a row of reinforcing ribs. The two ends of the row of reinforcing ribs are respectively connected to the interior of both sides of the chassis frame. Mounting plates are provided at both the front and rear ends of the chassis frame. Rectangular grooves are formed within the mounting plates, and support seats fit within these grooves. The support seats have openings within them. The two ends of the spring shock absorbers are respectively connected to the rectangular grooves and the tops of the support seats. This utility model, through the sliding cooperation structure of the slider and the groove, combined with the elastic support of the spring shock absorbers, allows the support seats to adaptively adjust in the vertical direction, effectively absorbing vibration and impact energy during vehicle operation. When the wheels encounter bumps, the support seats drive the slider to slide up and down within the groove, causing the spring shock absorbers to compress or extend, converting the impact force into elastic potential energy and releasing it slowly. This significantly reduces the vibration intensity transmitted to the frame and extends the service life of the chassis frame.

Description

Technical Field

[0001] This utility model relates to the field of RV manufacturing technology, specifically to RV chassis frames. Background Technology

[0002] As the fundamental load-bearing structure of an RV, the design of the chassis frame directly affects the stability and driving safety of the entire vehicle. Traditional RV chassis frames typically use welded support bases at both the front and rear ends, with wheel axles mounted through slots in these bases. This structure has revealed numerous limitations over long-term use. With increasing demands for lightweight design and road adaptability in RVs, existing rigidly connected chassis frames are insufficient to effectively mitigate impact loads under complex road conditions, easily leading to fatigue damage to the vehicle structure. Therefore, there is an urgent need to improve the shock absorption performance and adjustability of the support structure.

[0003] Currently, the support seats of mainstream RV chassis frames are directly welded to the frame, which has certain defects and needs to be improved. Rigid connections are difficult to effectively absorb and buffer the impact vibrations during driving, causing the road impact force to be directly transmitted to the vehicle body, affecting ride comfort and accelerating the fatigue of the vehicle body structure. In addition, the traditional structure lacks an effective displacement limiting mechanism, which can easily cause the axle to collide with the chassis due to excessive displacement of the support seat under bumpy conditions. Although some improvement solutions add independent shock absorbers, the structure is complex and cannot achieve automatic reset function, resulting in high maintenance costs and difficulty in adapting to the needs of different terrains. Utility Model Content

[0004] The purpose of this utility model is to provide a RV chassis frame, which solves the problem that the support seat is difficult to effectively absorb impact by using spring shock absorbers to provide elastic support for the support seat.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model is a motorhome chassis frame, including a chassis frame, spring shock absorbers and a row of reinforcing ribs. The two ends of the row of reinforcing ribs are respectively connected to the inside of both sides of the chassis frame. The front and rear ends of the chassis frame are provided with mounting plates. The mounting plates have rectangular grooves, and the rectangular grooves are fitted with support seats. The support seats have slots. The two ends of the spring shock absorbers are respectively connected to the rectangular grooves and the top of the support seats.

[0007] Furthermore, the mounting plate has two sliding grooves, and sliders are installed on both sides of the support base. The two sliders slide and engage in the corresponding sliding grooves.

[0008] Furthermore, a wedge block is installed on the top of the slider, and an inclined block is installed on the top wall of the groove.

[0009] Furthermore, inclined pads are provided at the top of the wedge block and the bottom of the inclined block.

[0010] Furthermore, a base pad is provided at the bottom of the support base, and the base pad contacts the bottom surface of the rectangular groove.

[0011] Furthermore, the chassis frame has light holes at both the front and rear ends, and each light hole is fitted with a bolt. The mounting plate has threaded holes, and the threaded ends of the bolts are fitted into the threaded holes.

[0012] This utility model has the following beneficial effects:

[0013] This utility model, through the sliding cooperation structure of the slider and the groove, combined with the elastic support of the spring shock absorber, enables the support seat to adaptively adjust in the vertical direction, effectively absorbing the vibration and impact energy during vehicle operation. When the wheel encounters a bump, the support seat drives the slider to slide up and down in the groove, and the spring shock absorber is compressed or extended accordingly, converting the impact force into elastic potential energy and releasing it slowly, greatly reducing the vibration intensity transmitted to the frame and extending the service life of the chassis frame.

[0014] This utility model, through the mechanical locking mechanism of the wedge block and the inclined trigger block, can automatically limit the displacement range of the support seat under extreme working conditions, providing safety assurance. When the vehicle passes through a severely bumpy road section or the spring shock absorber fails, the excessive displacement of the support seat will cause the wedge block at the top of the slider to contact the inclined trigger block on the top wall of the groove. The inclined surface cooperation achieves positioning, preventing the support seat from continuing to move and causing the axle to collide with the chassis. This ensures the shock absorption function while effectively preventing the risk of overload.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall chassis frame.

[0017] Figure 2 This is a schematic diagram of the installation disk.

[0018] Figure 3 This is a schematic diagram of the internal structure of the installation disk;

[0019] Figure 4 This is a schematic diagram of the support base.

[0020] In the diagram: 1. Chassis frame; 101. Reinforcing rib; 2. Mounting plate; 201. Rectangular groove; 202. Slide groove; 203. Threaded hole; 3. Support base; 301. Groove; 4. Spring shock absorber; 5. Slider; 6. Wedge block; 7. Inclined block; 8. Base pad; 9. Bolt; 10. Inclined washer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a motorhome chassis frame, including a chassis frame 1, spring shock absorbers 4, and a row of reinforcing ribs 101. The chassis frame 1 has holes at both its front and rear ends, and each hole houses a bolt 9. A mounting plate 2 has threaded holes 203, with the ends of the bolts 9 threaded into the threaded holes 203. The bolts 9 pass through the holes in the chassis frame 1 and are screwed into the threaded holes 203 of the mounting plate 2, achieving a detachable connection. The two ends of the row of reinforcing ribs 101 are respectively connected to the interior of both sides of the chassis frame 1. The reinforcing ribs 101 are arranged laterally and welded to the interior of both sides of the chassis frame 1 to improve the overall structural strength. Mounting plates 2 are provided at both the front and rear ends of the chassis frame 1, and rectangular grooves 201 are formed within the mounting plates 2. The 01 is fitted with a support seat 3, which has a slot 301. The support seat 3 is used to install the wheel axle. The wheel axle can be fixed through the slot 301. The two ends of the spring shock absorber 4 are connected to the rectangular slot 201 and the top of the support seat 3, respectively. The spring shock absorber 4 is used to buffer the impact force during driving and automatically resets the support seat 3 after being subjected to force. During vehicle driving, the impact force on the wheel is transmitted to the support seat 3 through the axle. The support seat 3 slides up and down along the rectangular slot 201, compressing or releasing the spring shock absorber 4, thereby absorbing vibration energy and improving driving stability. When the impact force decreases, the spring shock absorber 4 pushes the support seat 3 to reset, the wedge block 6 disengages from the inclined block 7, and the normal shock absorption function is restored.

[0023] The mounting plate 2 has two sliding grooves 202. Slider 5 is installed on both sides of the support base 3, and the two sliders 5 slide and engage in their respective sliding grooves 202. When the support base 3 moves up and down along the rectangular groove 201, the sliders 5 on both sides move along their respective sliding grooves 202, limiting the movement of the support base 3. A wedge block 6 is installed on the top of the slider 5, and an inclined block 7 is installed on the top wall of the sliding groove 202. When the vehicle travels on a bumpy road, if the impact force is too great, causing the support base 3 to displace upwards beyond the safety threshold, it will cause the sliders 5 on both sides to move upwards along their respective sliding grooves 202. At this time, the wedge block 6 will move upwards with the slider 5 until it contacts the inclined block 7. Since both the wedge block 6 and the inclined block 7 are equipped with inclined pads 10, they form a self-locking structure after contact, preventing the support base 3 from continuing to move upwards and avoiding overload damage to the spring shock absorber 4 or collision between the axle and the chassis.

[0024] Both the top of the wedge block 6 and the bottom of the inclined block 7 are provided with inclined pads 10, and the bottom of the support base 3 is provided with a bottom pad 8. Both the bottom pad 8 and the inclined pad 10 are rubber pads. The bottom pad 8 contacts the bottom surface of the rectangular groove 201. Through the bottom pad 8, when the support base 3 moves down to the limit position, the bottom pad 8 contacts the bottom surface of the rectangular groove 201, which plays a role in buffering and limiting.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A motorhome chassis frame, comprising a chassis frame (1) and a row of reinforcing ribs (101), characterized in that: The two ends of the row of reinforcing ribs (101) are respectively connected to the inside of both sides of the chassis frame (1); The chassis frame (1) is provided with mounting plates (2) at both the front and rear ends. A rectangular groove (201) is provided in the mounting plate (2). A support seat (3) is fitted in the rectangular groove (201). A slot (301) is provided in the support seat (3). It also includes a spring damper (4), the two ends of which are connected to the top of the rectangular groove (201) and the support seat (3), respectively.

2. The recreational vehicle chassis frame of claim 1, wherein, The mounting plate (2) has a sliding groove (202) inside, and there are two sliding grooves (202). The support base (3) has sliders (5) installed on both sides, and the two sliders (5) slide and cooperate in the corresponding sliding grooves (202).

3. The recreational vehicle chassis frame of Claim 2, wherein, A wedge block (6) is installed on the top of the slider (5), and an inclined block (7) is installed on the top wall of the groove (202).

4. The recreational vehicle chassis frame of claim 3, wherein, The top of the wedge block (6) and the bottom of the inclined block (7) are both provided with inclined pads (10).

5. The recreational vehicle chassis frame of Claim 1, wherein, The bottom of the support base (3) is provided with a bottom pad (8), which is in contact with the bottom surface of the rectangular groove (201).

6. The recreational vehicle chassis frame of Claim 1, wherein, The chassis frame (1) has light holes at both the front and rear ends, and each light hole is fitted with a bolt (9). The mounting plate (2) has a threaded hole (203), and the end of the bolt (9) is threaded into the threaded hole (203).

Images