A variable stiffness support spring set arrangement for a motor vehicle bed

Abstract

The utility model discloses a kind of variable stiffness support spring group devices of automobile sleeping berth, it is related to automobile engineering technical field, to solve the technical problem of current automobile sleeping berth spring group single support mode, use effect is poor, including deformation frame, draw bar and adjusting assembly, the deformation frame is composed of upper folding frame and lower folding frame, and end head part is respectively through first end shaft and second end shaft to complete rotary connection, first end shaft side is equipped with connecting barrel, second end shaft side is equipped with push rod, the adjusting assembly includes the barrel between two groups of deformation frame, sliding cylinder slidingly installed at the both ends of barrel, and outer spring and inner spring arranged in barrel interior, the inner spring is located in the interior of outer spring, and outer spring and inner spring elastic coefficient are same, the draw bar is connected first end shaft and adjusting assembly. The utility model has the advantages of spring group switchable stiffness, good supporting effect.

Description

Technical Field

[0001] This utility model relates to the field of automotive engineering technology, and more specifically, to a variable stiffness support spring assembly device for automotive sleeper berths. Background Technology

[0002] The variable stiffness support spring assembly for automotive sleeper berths is a device used in automotive sleeper berths that adjusts the spring stiffness according to different working conditions to improve the comfort of drivers and passengers. Heavy and medium-duty freight trucks are the primary application scenario for sleeper berths. Long-haul freight drivers often face cross-city and cross-province transportation, with a single trip potentially lasting several days. Sleeper berths allow drivers to legally rest during the journey, avoiding fatigue driving.

[0003] In long-distance transportation, drivers typically take turns driving to reduce driver fatigue. A sleeper berth is provided inside the cab of the truck for rest during shift changes. Existing sleeper berths use upright compression springs for cushioning, and their constant elastic pressure helps to reduce shock and maintain a certain level of comfort. However, when switching between moving and stationary states, the existing spring assembly is not convenient for providing different levels of rigidity support, resulting in poor comfort during use. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a variable stiffness support spring group device for automobile sleeper berths, so as to solve the technical problem that the current automobile sleeper spring group has a single support mode and poor performance.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a variable stiffness support spring assembly for a car sleeper berth, comprising a deformation frame, a traction rod, and an adjustment component. The deformation frame consists of an upper folding frame and a lower folding frame, and their ends are rotatably connected by a first end shaft and a second end shaft, respectively. A connecting cylinder is provided on the side of the first end shaft, and a push rod is provided on the side of the second end shaft. The adjustment component includes a cylinder located between the two sets of deformation frames, sliding cylinders slidably installed at both ends of the cylinder, and an outer spring and an inner spring disposed inside the cylinder. The inner spring is located inside the outer spring, and the outer spring and the inner spring have the same elastic coefficient. The traction rod connects the first end shaft and the adjustment component.

[0006] Preferably, the upper folding frame bend is provided with a connecting seat, the lower folding frame bend is provided with a base, and both the first end shaft and the second end shaft are provided with torsion spring assemblies for elastic support.

[0007] Preferably, the second end shaft has a through-hole in the middle, and the through-hole is misaligned with the push rod. The traction rod slides through the through-hole, and the inner end of the traction rod is threaded onto the opening end of the connecting cylinder. The push rod fits against the outer end of the sliding cylinder.

[0008] Preferably, the outer side of the cylinder is provided with a sliding groove, and the rear end of the sliding cylinder is provided with a cross end that slides between the sliding grooves. The outer side of the cross end is provided at the sleeve end, and the sleeve end is connected to an outer spring.

[0009] Preferably, the slide tube is provided with a toothed groove, the middle part of the traction rod is provided with a limiting cylinder that is slidably installed in the toothed groove, and the rear end of the traction rod is provided with a collar for connecting the inner spring.

[0010] Preferably, the sleeve end is cylindrical, and the outer spring is sleeved and fixed on the outside of the sleeve end. The collar is a ring body, and the inner spring and the collar connection end are provided with hooks to maintain connection strength.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The deformable frame of this utility model consists of an upper folding frame and a lower folding frame. A torsion spring assembly is provided at the connecting rotation point. The sleeper bed is mounted on the connecting seat. When the vehicle is stationary and the bed is subjected to downward pressure, the pressure is buffered by the partial bending of the upper and lower folding frames. Combined with the torsion spring assembly, elastic support is achieved, which can effectively provide the elasticity required during daily use. At the same time, the two ends of the deformable frame extend during deformation. When the extension reaches the moving distance, the adjustment component can be activated to enhance the elastic stiffness and improve the support effect. The multiple elastic support effects maintain the good operating condition of the equipment and improve its service life.

[0012] 2. During the use of this utility model, when the deformable frame descends and buffers, both ends unfold. The push rod squeezes the slide cylinder to compress the outer spring, while the connecting cylinder on the other side pulls the traction rod, causing the traction rod to pull the inner spring. Through the above two methods of pushing and pulling, the elastic effect is maintained. At the same time, the double elasticity enhances the elastic stiffness, which is suitable for providing strong support and buffering for the sleeper berth during vehicle travel. The limiting cylinder and the slide cylinder slide and adapt to each other to ensure lateral stability during operation, prevent damage caused by force deflection, and further improve the comfort of practical use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the deformable frame structure of this utility model; Figure 4 This is a schematic diagram of the adjustment component of this utility model; Figure 5 This is a schematic diagram of the slide tube structure of this utility model.

[0014] The following are the labels in the diagram: 1. Connecting seat; 2. Deformation frame; 201. Upper folding frame; 202. Lower folding frame; 3. First end shaft; 301. Connecting cylinder; 4. Base; 5. Traction rod; 501. Limiting cylinder; 502. Collar; 6. Adjustment assembly; 601. Slide cylinder; 602. Outer spring; 603. Cylinder body; 604. Inner spring; 605. Slide groove; 606. Cross end; 607. Toothed groove; 608. Sleeve end; 7. Second end shaft; 701. Push rod; 8. Torsion spring assembly. Detailed Implementation

[0015] like Figures 1 to 3 As shown, this utility model relates to a variable stiffness support spring assembly for a car sleeper berth, comprising a deformable frame 2, a traction rod 5, and an adjustment assembly 6. The deformable frame 2 consists of an upper folding frame 201 and a lower folding frame 202, with their ends rotatably connected via a first end shaft 3 and a second end shaft 7, respectively. A connecting cylinder 301 is provided on the side of the first end shaft 3, and a push rod 701 is provided on the side of the second end shaft 7. A connecting seat 1 is provided at the bent portion of the upper folding frame 201, and a base 4 is provided at the bent portion of the lower folding frame 202. Both the first end shaft 3 and the second end shaft 7 are provided with elastically supported torsion spring assemblies 8. A through-hole is provided in the middle of the second end shaft 7, and the through-hole is misaligned with the push rod 701. The traction rod 5 slides through the through-hole, and the inner end of the traction rod 5... The threaded connection is installed at the open end of the connecting cylinder 301, and the push rod 701 fits against the outer end of the slide cylinder 601. The deformation frame 2 consists of an upper folding frame 201 and a lower folding frame 202. A torsion spring assembly 8 is provided at the rotating part of the connection. The berth is mounted on the connecting seat 1. When the vehicle is stationary and the berth is subjected to downward pressure, the pressure is buffered by the partial bending of the upper folding frame 201 and the lower folding frame 202. In conjunction with the torsion spring assembly 8, elastic support is achieved, which can effectively provide the elasticity required during daily use. At the same time, the two ends of the deformation frame 2 extend during deformation. When it extends to the moving distance, the adjustment component 6 can be activated to enhance the elastic stiffness and improve the support effect. The multiple elastic support effects maintain the good operating condition of the equipment and improve its service life.

[0016] like Figures 2 to 5As shown, this utility model relates to a variable stiffness support spring assembly for a car sleeper berth, comprising a deformation frame 2, a traction rod 5, and an adjustment assembly 6. The adjustment assembly 6 includes a cylinder 603 located between two sets of deformation frames 2, a slide cylinder 601 slidably mounted at both ends of the cylinder 603, and an outer spring 602 and an inner spring 604 disposed inside the cylinder 603. The inner spring 604 is located inside the outer spring 602, and the outer spring 602 and the inner spring 604 have the same elastic coefficient. The traction rod 5 connects the first end shaft 3 and the adjustment assembly 6. A groove 605 is provided on the outer side of the cylinder 603. A cross end 606 is provided at the rear end of the slide cylinder 601, sliding between the grooves 605. The outer side of the cross end 606 is provided at a sleeve end 608, and the sleeve end 608 is connected to the outer spring 602. A toothed groove 607 is provided inside the slide cylinder 601. A limiting position is provided in the middle of the traction rod 5, which is slidably mounted in the toothed groove 607. The cylinder 501 and the rear end of the traction rod 5 are provided with a collar 502 that connects to the inner spring 604. The sleeve end 608 is cylindrical, and the outer spring 602 is sleeved and fixed on the outside of the sleeve end 608. The collar 502 is a ring body, and the connection end between the inner spring 604 and the collar 502 is provided with a hook to maintain the connection strength. During use, when the deformable frame 2 descends and buffers, both ends unfold. The push rod 701 squeezes the slide cylinder 601 to squeeze the outer spring 602, while the connecting cylinder 301 on the other side pulls the traction rod 5, so that the traction rod 5 pulls the inner spring 604. The elastic effect is maintained through the above two methods of pushing and pulling, and the double elasticity enhances the elastic stiffness. It is suitable for providing strong support and buffering for the sleeper berth during the bumpy ride of the vehicle. The limiting cylinder 501 and the slide cylinder 601 slide and adapt to each other to ensure lateral stability during operation, prevent damage caused by force deflection, and further improve the practical comfort.

[0017] Working principle: This embodiment provides a variable stiffness support spring assembly device for automobile sleeper berths. In use, the sleeper bed is mounted on the connecting seat 1. When the vehicle is stationary and the bed is subjected to downward pressure, the pressure is buffered by the partial bending of the upper folding frame 201 and the lower folding frame 202. In conjunction with the torsion spring assembly 8, elastic support is achieved, initially providing the elasticity required. When the deformation frame 2 descends to buffer, both ends unfold. The push rod 701 presses the slide cylinder 601 to compress the outer spring 602, while the connecting cylinder 301 on the other side pulls the traction rod 5, causing the traction rod 5 to pull the inner spring 604. The two methods of pushing and pulling provide double the elasticity and stiffness, which is suitable for the bumpy process of vehicle travel. The limiting cylinder 501 and the slide cylinder 601 slide and adapt to each other to ensure lateral stability during operation.

[0018] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A variable stiffness support spring assembly for a car sleeper berth, comprising a deformable frame (2), a traction rod (5), and an adjustment assembly (6), characterized in that: The deformable frame (2) is composed of an upper folding frame (201) and a lower folding frame (202), and the ends are rotatably connected by a first end shaft (3) and a second end shaft (7), respectively. A connecting cylinder (301) is provided on the side of the first end shaft (3), and a push rod (701) is provided on the side of the second end shaft (7). The adjustment assembly (6) includes a cylinder (603) located between two sets of deformation frames (2), a slide cylinder (601) slidably installed at both ends of the cylinder (603), and an outer spring (602) and an inner spring (604) disposed inside the cylinder (603). The inner spring (604) is located inside the outer spring (602), and the outer spring (602) and the inner spring (604) have the same elastic coefficient. The traction rod (5) connects the first end shaft (3) and the adjustment assembly (6).

2. The variable stiffness support spring assembly for a car sleeper berth according to claim 1, characterized in that: The upper folding frame (201) is provided with a connecting seat (1) at the bending part, the lower folding frame (202) is provided with a base (4) at the bending part, and both the first end shaft (3) and the second end shaft (7) are provided with torsion spring groups (8) for elastic support.

3. The variable stiffness support spring assembly for a car sleeper berth according to claim 2, characterized in that: The second end shaft (7) has a through hole in the middle, and the through hole is misaligned with the push rod (701). The traction rod (5) slides through the through hole, and the inner end of the traction rod (5) is threaded onto the opening end of the connecting cylinder (301). The push rod (701) fits against the outer end of the sliding cylinder (601).

4. The variable stiffness support spring assembly for a car sleeper berth according to claim 3, characterized in that: The outer side of the cylinder (603) is provided with a sliding groove (605), and the rear end of the sliding cylinder (601) is provided with a cross end (606) that slides between the sliding grooves (605). The outer side of the cross end (606) is provided with a sleeve end (608), and the sleeve end (608) is connected to an outer spring (602).

5. The variable stiffness support spring assembly for a car sleeper berth according to claim 4, characterized in that: The slide tube (601) is provided with a toothed groove (607), the middle part of the traction rod (5) is provided with a limiting cylinder (501) that is slidably installed in the toothed groove (607), and the rear end of the traction rod (5) is provided with a collar (502) that connects to the inner spring (604).

6. The variable stiffness support spring assembly for a car sleeper berth according to claim 5, characterized in that: The sleeve end (608) is cylindrical, and the outer spring (602) is sleeved and fixed on the outside of the sleeve end (608). The collar (502) is a ring body, and the inner spring (604) and the collar (502) are connected by a hook to maintain the connection strength.

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