Seat elevator for motor home

Abstract

The utility model provides a seat elevator for a motor home, which belongs to the technical field of motor homes and comprises a driver seat. The driver seat is rotatably mounted on the base; the side wall of the base is fixedly connected with a pair of lead screw nuts; each lead screw nut is in threaded connection with a lead screw and used for driving the base to ascend and descend through rotation of the lead screws. The upper end and the lower end of the lead screw are rotationally connected with the vehicle body. The lower portion of the lead screw is connected with a driving device used for driving the lead screw to rotate. And a skylight capable of being opened and closed is arranged at the position, corresponding to the driver seat, of the top of the vehicle body. The driver seat is used as a bearing tool, the driving device drives the lead screw to rotate, people sitting on the seat are lifted to the roof, on one hand, space in a vehicle body is not occupied, the space utilization rate is high, on the other hand, the sitting posture of the people is lifted, safety is high, comfort is good, and the vehicle is suitable for being used by children and old people with weak climbing capacity. And the adaptability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of RV technology and relates to a seat lift for RVs. Background Technology

[0002] Motorhomes combine the functions of both a "house" and a "vehicle." The roof of a motorhome can be equipped with luggage racks and other auxiliary structures, and a ladder is usually provided for easy access. Existing ladders, such as the one described in patent CN 216184811U ("A Highly Safe Lifting Ladder Structure for Motorhome Roofs"), are located outside the vehicle body, posing a risk of falls when climbing, and also occupying considerable space. Another example is patent CN 216331698U ("A Lifting Ladder for Motorhomes"), which, although foldable, still takes up a significant amount of space when in use. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a seat lift for RVs. The purpose is to use the driver's seat as a load-bearing tool and set up a drive mechanism to lift the people sitting in the seat to the roof of the vehicle. On the one hand, it does not occupy the space inside the vehicle, so the space utilization rate is high. On the other hand, the seated lifting position is safe and comfortable, making it suitable for children and the elderly with weak climbing ability and improving their adaptability.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution.

[0005] A car seat lift includes a driver's seat; the driver's seat is rotatably mounted on a base; a pair of lead screw nuts are fixed to the side wall of the base; each lead screw nut is threaded with a lead screw, which drives the base to rise or fall by rotating the lead screw; the upper and lower ends of the lead screw are rotatably connected to the vehicle body; a drive device is connected to the lower part of the lead screw for driving the lead screw to rotate; and an openable sunroof is provided on the top of the vehicle body corresponding to the driver's seat.

[0006] As a further optimization, the drive device includes a motor fixed to the vehicle body and a pulley fixed to the lower part of the lead screw. The output shaft of the motor is fixed to the drive wheel. A belt wraps around the drive wheel and the two pulleys to form a belt drive mechanism, which drives the two pulleys to rotate synchronously when the drive wheel rotates. The belt drive mechanism also includes a tensioner supported on the outside of the belt. The axle of the tensioner is rotatably connected to the vehicle body.

[0007] As a further optimization, a control button is provided on the side of the driver's seat for controlling the motor; the control button communicates with the motor wirelessly.

[0008] As a further optimization, the two ends of the lead screw are inserted into the bearings of the thrust bearing housing, which is mounted on the vehicle body for rotatable connection between the upper and lower ends of the lead screw and the vehicle body.

[0009] As a further optimization, the base is provided with a movable pin for fixing the driver's seat to the base after the driver's seat has been rotated into position.

[0010] As a further optimization, a guardrail assembly is fixedly provided on the base.

[0011] As a further optimization, with the vehicle's forward direction as the front, the guardrail assembly includes a rear baffle and a left baffle; a detachable front baffle is connected to the front end of the left baffle.

[0012] Compared with the prior art, the beneficial effects of this utility model are that it uses the driver's seat as a load-bearing tool and drives the lead screw to rotate through the drive device to lift the person sitting in the seat to the roof of the vehicle. On the one hand, it does not occupy the space inside the vehicle, so the space utilization rate is high. On the other hand, the person's sitting posture is raised and lowered, which is safe and comfortable. It is suitable for children and the elderly with weak climbing ability, thus improving adaptability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the driver's seat when raised, according to an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the driver's seat when it is lowered, according to an embodiment of the present invention.

[0015] Figure 3 This is a schematic diagram of the drive device structure according to an embodiment of the present invention.

[0016] The correspondence between the technical features in the figure and the reference numerals is as follows: vehicle body 1; sunroof opening 11; door opening 12; windshield opening 13; driver's seat 2; base 3; lead screw nut 31; pin 32; rear panel 33; left panel 34; front panel 35; lead screw 4; motor 5; drive wheel 51; pulley 52; belt 53; tensioner 54; thrust bearing seat 6. Detailed Implementation

[0017] The present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some preferred embodiments of the present invention, and not all embodiments. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of protection of the present invention.

[0018] Example: Please refer to Figure 1-3 .

[0019] A caravan seat lift includes a driver's seat 2; the driver's seat 2 is rotatably mounted on a base 3; a pair of screw nuts 31 are fixedly connected to the side wall of the base 3; each screw nut 31 is threaded with a screw 4, which drives the base 3 to rise and fall by rotating the screw 4; the upper and lower ends of the screw 4 are rotatably connected to the vehicle body 1; a drive device is connected to the lower part of the screw 4, which drives the screw 4 to rotate; and an openable sunroof is provided on the top of the vehicle body 1 corresponding to the driver's seat 2.

[0020] The working principle involves the following: A driver's seat 2 is typically essential, and other seats in the RV can be added as needed. Therefore, using the driver's seat 2 as a load-bearing component is the most space-saving approach. When the vehicle is in motion, the driver's seat 2 faces forward. After parking, the driver's seat 2 is rotated 90 degrees to the right, ensuring the passenger's knees are not obstructed from the steering wheel, preventing interference during raising and lowering. Then, the drive mechanism is activated, causing the two lead screws 4 to rotate. However, the base 3 is simultaneously connected to both lead screws 4, preventing it from rotating. This causes the lead screws 4 and the lead screw nut 31 to rotate relative to each other. Through the threaded connection, the lead screw nut 31 drives the base 3 to rise and fall together. With the sunroof open, a passageway for entering and exiting the roof is created above the driver's seat 2, allowing passengers to enter and exit in a seated position, offering good comfort and safety. Regarding the interior space, only one pair of lead screws 4 is added, and the drive mechanism can be located below the lead screws 4, maximizing space saving and improving the efficiency of interior space utilization.

[0021] With the direction the driver is driving the RV forward as the front, the door opening 12 is on the driver's right, the windshield opening 13 is in front of the driver, and the lead screw 4 is behind the driver. The sunroof is installed in the sunroof opening 11 above the driver's seat 2. Preferably, a guardrail assembly is fixed on the base 3; the right side of the guardrail assembly is an open opening for easy access. More preferably, the guardrail assembly includes a rear baffle 33 and a left baffle 34; a detachable front baffle 35 is connected to the front end of the left baffle 34. The front baffle 35 can be removed when the vehicle is in motion. The front baffle 35 further prevents people from falling off the driver's seat 2, improving safety.

[0022] An exemplary drive device can connect one motor 5 to each lead screw 4, with the two motors 5 rotating synchronously. Alternatively, one motor 5 can drive the two lead screws 4 to rotate synchronously via a gear transmission mechanism. This embodiment employs a lower-cost drive method, specifically, the drive device includes a motor 5 fixed to the vehicle body 1 and pulleys 52 fixed to the lower part of the lead screws 4. The output shaft of the motor 5 is fixed to a drive wheel 51. A belt 53 wraps around the drive wheel 51 and the two pulleys 52 to form a belt transmission mechanism, used to drive the two pulleys 52 to rotate synchronously when the drive wheel 51 rotates. The belt transmission mechanism also includes a tensioning pulley 54 supported on the outside of the belt 53. The axle of the tensioning pulley 54 is rotatably connected to the vehicle body 1. Since the base 3 and the lead screw 4 are threadedly connected, even if the drive device fails, the threaded self-locking mechanism can prevent the base 3 from falling, ensuring good safety.

[0023] When a person is seated in the driver's seat 2, another person can operate the motor 5 using control buttons located on the dashboard. However, this is inconvenient for two people. In this embodiment, the driver's seat 2 has control buttons on its side for controlling the motor 5. The passenger can operate the raising and lowering mechanism themselves, which is safe and convenient. The seat can even be raised to the sunroof area to open and close it independently. However, since the control buttons rise and fall with the seat, to avoid interference from the wiring harness connected to the motor 5, the control buttons communicate with the motor 5 wirelessly.

[0024] For example, both ends of the lead screw 4 are inserted into the bearings of the thrust bearing seat 6, which is mounted on the vehicle body 1 and is used for the rotatable connection between the upper and lower ends of the lead screw 4 and the vehicle body 1.

[0025] Preferably, the base 3 is provided with a movable pin 32 for fixing the driver seat 2 to the base 3 after the driver seat 2 has been rotated into position. The base 3 has two pin holes: a front pin hole and a right pin hole. The front pin hole is used to fix the driver seat 2 when the driver is driving the RV; the right pin hole is used to fix the driver seat 2 when the seat is raised or lowered.

[0026] The advantage of this embodiment is that by using the driver's seat 2 as a support tool, the screw 4 is driven to rotate by the drive device to lift the person sitting in the seat to the roof of the vehicle. On the one hand, it does not occupy the space inside the vehicle body 1, and the space utilization rate is high. On the other hand, the person's sitting posture is raised and lowered, which is safe and comfortable. It is suitable for children and the elderly with weak climbing ability and improves their adaptability.

[0027] The parts of this utility model not described in detail are prior art; for those skilled in the art, the technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, they should be considered to be within the scope of this specification.

Claims

1. A car seat lift for RVs, comprising a driver's seat (2); characterized in that: The driver's seat (2) is rotatably mounted on the base (3); a pair of lead screw nuts (31) are fixed to the side wall of the base (3); each lead screw nut (31) is threaded with a lead screw (4); the upper and lower ends of the lead screw (4) are rotatably connected to the vehicle body (1); The lower part of the lead screw (4) is connected to a drive device for driving the lead screw (4) to rotate; the top of the vehicle body (1) is provided with an openable sunroof corresponding to the driver's seat (2).

2. The RV seat lift according to claim 1, characterized in that: The drive device includes a motor (5) fixed to the vehicle body (1) and a pulley (52) fixed to the lower part of the lead screw (4). The output shaft of the motor (5) is fixed to the drive wheel (51). A belt (53) is wrapped around the drive wheel (51) and the two pulleys (52) to form a belt drive mechanism. The belt drive mechanism also includes a tensioning pulley (54) supported on the outside of the belt (53). The axle of the tensioning pulley (54) is rotatably connected to the vehicle body (1).

3. The RV seat lift according to claim 2, characterized in that: The driver's seat (2) has a control button on its side for controlling the motor (5); the control button communicates with the motor (5) via wireless transmission.

4. The RV seat lift according to claim 1, characterized in that: The two ends of the lead screw (4) are inserted into the bearings of the thrust bearing seat (6), which is mounted on the vehicle body (1) for rotatable connection between the upper and lower ends of the lead screw (4) and the vehicle body (1).

5. The RV seat lift according to claim 1, characterized in that: The base (3) is provided with a movable pin (32) for fixing the driver seat (2) on the base (3) after the driver seat (2) is rotated into place.

6. The RV seat lift according to claim 1, characterized in that: A guardrail assembly is fixedly mounted on the base (3).

7. The RV seat lift according to claim 6, characterized in that: With the forward direction of the vehicle body (1) as the front, the guardrail assembly includes a rear baffle (33) and a left baffle (34); a detachable front baffle (35) is connected to the front end of the left baffle (34).

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