Vehicle placing rack at tail part of motor vehicle

Abstract

The utility model discloses a vehicle placing rack at the tail of a motor vehicle, a motor synchronously drives two lead screws through a driving shaft and a bevel gear amplitude, and finally two inner sleeves are simultaneously upward or downward, so that a main supporting plate is enabled to ascend and descend very smoothly, and the vehicle is enabled to ascend and descend stably and be placed more stably. In addition, after the inner sleeve completely retracts, the vertical beam and the inner sleeve can be locked through a plug pin arranged on the bottom beam, and the problem that the inner sleeve falls off when the motor vehicle runs is avoided. The swing arm can drive the main supporting plate and the rear panel to swing and rotate in the direction of the vertical beam together, so that the folded whole structure is more compact, the size is smaller, and the length of the motor vehicle cannot be too long. In addition, the transverse position and the vertical position of the upper buckle plate can be adjusted, and the upper buckle plate can swing in the transverse direction, so that the whole structure can be suitable for being fixedly used on the upper portions of vehicles of different models and different sizes.

Description

Technical Field

[0001] This utility model belongs to the technical field of improved vehicle placement structure for RVs, and in particular, a vehicle placement rack for the rear of a motor vehicle. Background Technology

[0002] When people travel by car, the ability to carry motorcycles or electric bicycles in recreational vehicles (RVs) and off-road vehicles has gradually become a necessity. The most common method is using rear-mounted carriers for RVs and off-road vehicles, which can lift and secure the vehicle. The original carriers mainly consisted of a main support plate, a ramp, a support frame, and wheel clamps. To use them, the ramp had to be removed from the frame, one end placed on the main support plate, the other end on the ground, and the vehicle pushed up before being secured with straps. This process was very cumbersome. Furthermore, if the angle and direction of the vehicle were not properly controlled when loading and unloading, it could easily fall off, posing a significant safety hazard. This method also required considerable strength to push the vehicle onto the carrier. Additionally, current carriers cannot fold when not supporting the vehicle, resulting in an excessively long rear end that makes parking difficult and poses other safety hazards.

[0003] To address the aforementioned issues, some manufacturers have developed devices that can automatically adjust the height of the main support plate. However, improvements can still be made in terms of smoothness, stability, and overall structural compactness. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a vehicle rear rack.

[0005] The technical solution adopted by this utility model to solve the technical problem is:

[0006] A vehicle rear rack for motor vehicles includes a main support plate and a support frame. The front end of the support frame is used to connect to the rear of the motor vehicle. The support frame is characterized in that a lifting mechanism is provided at the rear end of the support frame, and the lower end of the telescopic part of the lifting mechanism that can move vertically back and forth is hinged to the main support plate.

[0007] When the telescopic part extends downwards to its final position, the main support plate can swing towards the rear of the lifting mechanism and bring one end of the main support plate close to or in contact with the ground; when the telescopic part retracts upwards to its final position, the main support plate can swing towards the front of the lifting mechanism and bring the main support plate close to the lifting mechanism.

[0008] Furthermore, a telescopic part is provided on each side of the lifting mechanism, and the two telescopic parts are respectively hinged to the two sides of the main support plate;

[0009] The two telescopic parts can extend downward or retract upward synchronously, or the two telescopic parts can extend downward or retract upward with a small speed difference.

[0010] Furthermore, the lifting mechanism includes a crossbeam, a vertical beam, a drive module, and a telescopic part. The two vertical beams are respectively arranged on both sides of the bottom surface of the crossbeam, and each vertical beam is provided with a telescopic part that can move vertically back and forth. The drive module drives the two telescopic parts to move.

[0011] Furthermore, the driving module is selected from any one of the following (1), (2), (3), or (4):

[0012] (1) The drive module is an electric push rod, which is installed on a horizontal beam or a vertical beam and the downward push rod is located inside the vertical beam. The push rod is the telescopic part.

[0013] or,

[0014] (2) The drive module is a hydraulic push rod, which is installed on a horizontal beam or vertical beam and the downward push rod is located inside the vertical beam. The push rod is the telescopic part.

[0015] or,

[0016] (3) The drive module includes a motor, a bevel gear pair, a drive shaft, a lead screw, and a lead screw nut. The motor is installed at one end of the crossbeam. The drive shaft, which is arranged horizontally inside the crossbeam, is connected to the output shaft of the motor. The inner sleeve that can move vertically back and forth inside each vertical beam is the telescopic part. A lead screw nut is set inside each inner sleeve. A vertical lead screw is screwed inside each lead screw nut. The two lead screws are located near the upper end of the drive shaft and rotate synchronously or differentially with the drive shaft through a bevel gear pair.

[0017] Furthermore, the telescopic part is an inner sleeve, which can lock the vertical beam and the inner sleeve together by means of a pin provided on the lower side of the vertical beam when the inner sleeve is retracted into the vertical beam.

[0018] Furthermore, each of the two inner sleeves is provided with a cantilever extending towards the rear of the support frame at its lower end. The rear end of each cantilever is hinged to the front end of a swing arm, and the two swing arms connect the two sides of the main support plate. The swing arms can drive the main support plate to swing backward away from the vertical beam or forward towards the vertical beam. A pin is provided at the hinge of the swing arm and the cantilever to lock the relative position of the swing arm and the cantilever.

[0019] Furthermore, the rear ends of the two swing arms are respectively hinged to both sides of a rear panel.

[0020] Furthermore, indicator light panels are provided on both sides of the rear panel, and a license plate panel is provided on the rear panel between the two indicator light panels.

[0021] Furthermore, an intermediate beam is installed between the two vertical beams below the crossbeam, spaced apart from the crossbeam; and an upper buckle plate capable of lateral displacement is provided on the crossbeam and the intermediate beam, which is used to fasten and limit the alignment of the vehicle placed on the main support plate.

[0022] Furthermore, a horizontal plate is provided on the bottom surface of the crossbeam and the upper surface of the middle beam, and each horizontal plate is provided with an opening that is aligned vertically. The upper and lower ends of a movable tube are fixedly connected to the upper and lower horizontal plates, respectively. A bent tube that can swing horizontally and move vertically is provided on the movable tube, and the upper buckle plate is provided at the end of the bent tube above the main support plate.

[0023] The technical effects achieved by this utility model are:

[0024] In this invention, the motor synchronously drives two lead screws via a drive shaft and bevel gears, ultimately causing the two inner sleeves to move upwards or downwards simultaneously. This ensures smooth raising and lowering of the main support plate, guaranteeing stable vehicle lifting and placement. As the two inner sleeves continue to move downwards, they lift the rear of the vehicle, partially replacing the function of a jack. Furthermore, the simultaneous contact of the two inner sleeves with the ground provides greater stability to the rear of the vehicle. Additionally, after the inner sleeves are fully retracted, the vertical beam and inner sleeves can be locked together via pins on the bottom beam, preventing the inner sleeves from falling off while the vehicle is in motion. The swing arm can rotate the main support plate and rear panel together towards the vertical beam, resulting in a more compact and smaller overall structure when retracted, preventing the vehicle from becoming too long. Moreover, the lateral and vertical positions of the upper buckle plate are adjustable, and it can also rotate laterally, allowing the overall structure to be adapted for use on vehicles of different models and sizes. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the present invention (main support plate retracted);

[0026] Figure 2 yes Figure 1 The left view;

[0027] Figure 3 yes Figure 1 A 3D schematic diagram of the main support plate after it has been rotated;

[0028] Figure 4 yes Figure 3 The right view;

[0029] Figure 5 yes Figure 4 A bottom view;

[0030] Figure 6 This is a schematic diagram of the inner sleeve extending downwards;

[0031] Figure 7 This is a schematic diagram of the drive mechanism. Detailed Implementation

[0032] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0033] A vehicle rear-end rack includes a main support plate 9 and a support frame 1. The front end of the support frame is used to connect to the rear of the vehicle (not shown in the figure). As shown, a lifting mechanism is provided at the rear end of the support frame. The lower end of the telescopic part 38 in the lifting mechanism, which can move vertically back and forth, is hinged to the main support plate via a hinge shaft 19. The main support plate is as follows: Figure 6 The device shown can swing towards the rear of the lifting mechanism when the telescopic section extends downwards to its final position, causing one end of the main support plate to approach or contact the ground; the main support plate, as shown... Figure 1 As shown, when the telescopic part retracts upward to its original position, it can swing towards the front of the lifting mechanism and bring the main support plate closer to the lifting mechanism.

[0034] The lifting mechanism has a telescopic section on each side, hinged to the left and right sides of the main support plate, respectively. The two telescopic sections can extend downwards or retract upwards synchronously, or they can extend downwards or retract upwards with a small speed difference. The extension and retraction of the telescopic sections are not sequential with the rotation of the main support plate and can occur simultaneously. Synchronization means that the upward or downward speeds of the two telescopic sections are the same; speed difference means that there is a deviation in the upward or downward speeds of the two telescopic sections, but this deviation does not affect the normal lifting and lowering of the main support plate.

[0035] The lifting mechanism includes a horizontal beam 3, a vertical beam 2, a drive module, and a telescopic part 38. The two vertical beams are respectively located on both sides of the bottom surface of the horizontal beam. Each vertical beam contains a telescopic part capable of vertical reciprocating motion. The drive module drives the two telescopic parts. The drive module is selected from any one of the following (1), (2), or (3):

[0036] (1) The drive module is an electric push rod. The electric push rod is installed on the horizontal beam or vertical beam and the downward push rod is located inside the vertical beam. The push rod is a telescopic part.

[0037] or,

[0038] (2) The drive module is a hydraulic push rod. The hydraulic push rod is installed on the horizontal beam or vertical beam and the downward push rod is located inside the vertical beam. The push rod is a telescopic part.

[0039] or,

[0040] (3) For example Figure 7As shown, the drive module includes a motor 7, a gearbox 6, a bevel gear pair, a drive shaft 40, a lead screw 42, and a lead screw nut (not shown in the figure). The motor is installed at one end of the crossbeam. The drive shaft, which is arranged horizontally inside the crossbeam, is connected to the output end of the gearbox via a coupling (not shown in the figure). The input end of the gearbox is connected to the output shaft of the motor. The inner sleeve 38, which can move vertically reciprocatingly, is set inside each vertical beam as a telescopic part. A lead screw nut is fixed in the hollow cavity inside each inner sleeve. The axial direction of the lead screw nut is approximately the same as the vertical extension direction of the inner sleeve. A vertical lead screw is screwed inside each lead screw nut. The two lead screws near the upper end of the drive shaft rotate synchronously or differentially with the drive shaft via a bevel gear pair.

[0041] Of the above schemes (1), (2), and (3), scheme (3) is preferred. The motor, gearbox, bevel gear pair, and screw nut work together to make the lifting and lowering of the two inner sleeves more stable and safer. The method of use is as follows: the motor rotates, and after the gearbox changes speed and direction, it drives the drive shaft to rotate. The active bevel gears 39 sleeved at both ends of the drive shaft rotate and drive the driven bevel gears 41 to rotate through meshing. This drives the screw to rotate. When the screw rotates, the screw nut moves up and down along the screw, so that the screw nut ultimately drives the inner sleeve fixed to it to rise and fall. Figure 7 The details regarding how the drive shaft and lead screw are fixed, the bearings are installed, and the specific parameters are all existing technologies and will not be described in detail here.

[0042] When the telescopic part is an inner sleeve, the vertical beam and the inner sleeve can be locked together by the pin 20 provided on the lower side of the vertical beam when the inner sleeve retracts into the vertical beam.

[0043] A vertical tube 31 is installed at the rear end of the aforementioned support frame, and a rib plate 32 is installed between the support frame and the vertical tube. The vertical tube connects to the lower front end face of the vertical beam, and a fixing plate 30 is installed on each of their two sides. An opening is provided on the lower rear end face of the vertical beam, within which cantilever arms 16, connected to the inner sleeve and extending towards the rear of the support frame, are spaced apart. The rear end of each cantilever arm is hinged to the front end of a swing arm 17 via a hinge pin 19. The two swing arms connect to the two sides of the bottom surface of the main support plate. The swing arms can drive the main support plate as follows: Figure 3 The backward swing shown is away from the vertical beam, or as... Figure 1 As shown, the forward swing towards the vertical beam has pin holes 18 on both sides of the rear end of the cantilever and on the support plates 35 extending upward from both sides of the rear end of the cantilever. The pin holes on both sides of the rear end are... Figure 3 The pin holes 18 at the positions shown in the diagram are aligned. Pins inserted into all pin holes 18 can fix the swing arm and cantilever arm after they have swung backward into position. The pin holes 18 of the support plates extending upward on both sides of the rear end are aligned with... Figure 1The pin holes 18 at the aforementioned swing arm alignment positions are aligned, and pins inserted into all pin holes 18 can fix the swing arm and cantilever arm in place after they have swung forward. A support beam 26 for strengthening the structure is installed between the rear ends of the two swing arms.

[0044] The rear ends of the two swing arms are hinged to both sides of a rear panel 11 via hinges 27. Indicator lights 8 are located on both sides of the rear panel, and a license plate plate 14 is located on the rear panel between the two indicator lights. The indicator lights include brake lights, a red warning light, and other necessary lights. The license plate plate has screw holes for securing the vehicle's camera.

[0045] A middle beam 33, spaced apart from the crossbeam, is installed between the two vertical beams below the crossbeam. A bottom beam 21, also spaced apart from the crossbeam, is installed between the two vertical beams below the middle beam. Upper buckle plates 4, capable of lateral displacement, are installed on the crossbeam and the middle beam. These upper buckle plates are used to secure and limit the alignment of the vehicle placed on the main support plate. The installation structure of the upper buckle plate is as follows: Figure 1 , 2 As shown: A horizontal plate 24 is respectively installed on the bottom surface of the crossbeam and the upper surface of the middle beam. Each horizontal plate has an opening for vertical alignment. The upper and lower ends of a movable tube 13 are fixedly connected to the upper and lower horizontal plates respectively. A bent tube 10 that can swing laterally and move vertically is installed on the movable tube. The end 5 of the bent tube above the main support plate is equipped with an upper buckle plate. The above-mentioned swinging structure is as follows: Figure 1 , 2 As shown: Laterally aligned openings are provided on both sides of the moving tube. Several fixing blocks 25 are fixed to the openings on both sides of the moving tube with screws. These fixing blocks are hinged to the swing block 12 on the bending tube via hinge shafts. The swing block swings laterally along the hinge shaft, causing the bending tube to swing laterally. Multiple openings are also provided on both sides of the end 5 of the bending tube. The upper buckle plate can be fixed to different openings with bolts 34 to adjust its position.

[0046] The bottom beam has grooves at both ends, with a pin inserted into each groove. Pin holes 37 are provided on the surface of the vertical beam and the inner sleeve, aligning with the pin ends. After the pin end passes through the pin hole, it fixes the lower end of the inner sleeve and the lower end of the vertical beam together. All the aforementioned tubes are square tubes made of stainless steel, and the hinge pins, screws, and other accessories are also made of rust-proof materials. Several holes 15 are provided at the bottom of the groove in the main support plate.

[0047] The working process of this utility model is as follows:

[0048] When loading an electric vehicle: Adjust the upper buckle to the appropriate horizontal and vertical positions according to the vehicle model;

[0049] Once the RV is parked, use the remote control to operate the motor, causing the two inner sleeves to descend and approach the ground.

[0050] Remove the pins from the swing arm and cantilever, and manually swing the swing arm to the rear to bring the main support plate close to the ground. The inlet end 36 can be equipped with an inclined support plate, the lower end of which can be placed on the ground to facilitate the electric vehicle to be pushed from the support plate onto the main support plate. After the swing arm is swung into place, re-insert the pins into the pin holes of the cantilever and swing arm to fix their positions.

[0051] The rotating plate 22 is restored to its original position along the rotating shaft 28 provided in the groove 29 of the main support plate. Figure 4 The location shown; open the rear panel to the position indicated. Figure 4 The location shown;

[0052] Push the front wheel of the electric vehicle onto the main support plate from end 36 or the support plate there, until the front wheel of the electric vehicle presses against the rotating plate. Continue to push with force to make the rotating plate swing along the axis. At this time, the front wheel of the electric vehicle is stuck between the baffle 23 and the rotating plate after swinging.

[0053] The remote control inner sleeve retracts into the vertical beam, and the main support plate drives the electric vehicle to rise until the upper buckle plate presses against the electric vehicle's seat or other parts that can be fastened.

[0054] After completing the operations on other items, load the electric vehicle.

[0055] When unloading electric vehicles:

[0056] The remote control inner sleeve is lowered to a suitable height. Hold the electric vehicle and push it down from end 36.

[0057] Fold the rear panel back in, remove the pins from the swing arm and cantilever, and swing the main support plate back in. Then remotely retract the inner sleeve into the vertical beam to complete the raising of the main support plate. Once it is in place, the electric vehicle can be unloaded.

[0058] In this invention, the motor synchronously drives two lead screws via a drive shaft and bevel gears, ultimately causing the two inner sleeves to move upwards or downwards simultaneously. This ensures smooth raising and lowering of the main support plate, guaranteeing stable vehicle lifting and placement. As the two inner sleeves continue to move downwards, they lift the rear of the vehicle, partially replacing the function of a jack. Furthermore, the simultaneous contact of the two inner sleeves with the ground provides greater stability to the rear of the vehicle. Additionally, after the inner sleeves are fully retracted, the vertical beam and inner sleeves can be locked together via pins on the bottom beam, preventing the inner sleeves from falling off while the vehicle is in motion. The swing arm can rotate the main support plate and rear panel together towards the vertical beam, resulting in a more compact and smaller overall structure when retracted, preventing the vehicle from becoming too long. Moreover, the lateral and vertical positions of the upper buckle plate are adjustable, and it can also rotate laterally, allowing the overall structure to be adapted for use on vehicles of different models and sizes.

Claims

1. A vehicle rear-end rack, comprising a main support plate and a support frame, wherein the front end of the support frame is used to connect to the rear of a vehicle, characterized in that: A lifting mechanism is provided at the rear end of the support frame, and the lower end of the telescopic part in the lifting mechanism that can move vertically back and forth is hinged to the main support plate; When the telescopic part extends downwards to its final position, the main support plate can swing towards the rear of the lifting mechanism and bring one end of the main support plate close to or in contact with the ground; when the telescopic part retracts upwards to its final position, the main support plate can swing towards the front of the lifting mechanism and bring the main support plate close to the lifting mechanism.

2. The vehicle rear rack according to claim 1, characterized in that: The lifting mechanism is provided with a telescopic part on each side, and the two telescopic parts are respectively hinged to the two sides of the main support plate. The two telescopic parts can extend downward or retract upward synchronously, or the two telescopic parts can extend downward or retract upward with a small speed difference.

3. A vehicle rear rack according to claim 1 or 2, characterized in that: The lifting mechanism includes a horizontal beam, a vertical beam, a drive module, and a telescopic part. The two vertical beams are respectively arranged on both sides of the bottom surface of the horizontal beam. Each vertical beam is provided with a telescopic part that can move vertically back and forth. The drive module drives the two telescopic parts to move.

4. A vehicle rear rack according to claim 3, characterized in that: The driving module is selected from any one of (1), (2), or (3) below: (1) The drive module is an electric push rod, which is installed on a horizontal beam or a vertical beam and the downward push rod is located inside the vertical beam. The push rod is the telescopic part. or, (2) The drive module is a hydraulic push rod, which is installed on a horizontal beam or vertical beam and the downward push rod is located inside the vertical beam. The push rod is the telescopic part. or, (3) The drive module includes a motor, a bevel gear pair, a drive shaft, a lead screw, and a lead screw nut. The motor is installed at one end of the crossbeam. The drive shaft, which is arranged horizontally inside the crossbeam, is connected to the output shaft of the motor. The inner sleeve that can move vertically back and forth inside each vertical beam is the telescopic part. A lead screw nut is set inside each inner sleeve. A vertical lead screw is screwed inside each lead screw nut. The two lead screws are located near the upper end of the drive shaft and rotate synchronously or differentially with the drive shaft through a bevel gear pair.

5. A vehicle rear rack according to claim 4, characterized in that: The telescopic part is an inner sleeve. When the inner sleeve retracts into the vertical beam, the vertical beam and the inner sleeve can be locked together by a pin provided on the lower side of the vertical beam.

6. A vehicle rear rack according to claim 5, characterized in that: Both inner sleeves are provided with cantilever arms extending towards the rear of the support frame at their lower ends. The front end of a swing arm is hinged to the rear end of each cantilever arm, and the two swing arms connect the two sides of the main support plate. The swing arms can drive the main support plate to swing backward away from the vertical beam or forward towards the vertical beam. A pin is provided at the hinge of the swing arm and the cantilever arm to lock the relative position of the swing arm and the cantilever arm.

7. A vehicle rear rack according to claim 6, characterized in that: The rear ends of the two swing arms are respectively hinged to both sides of a rear panel.

8. A vehicle rear rack according to claim 7, characterized in that: The rear panel has indicator light panels on both sides, and a license plate panel is installed on the rear panel between the two indicator light panels.

9. A vehicle rear rack according to claim 4, 5, 6, 7, or 8, characterized in that: An intermediate beam, spaced apart from the crossbeam, is installed between the two vertical beams below the crossbeam; an upper buckle plate, capable of lateral displacement, is provided on the crossbeam and the intermediate beam. This upper buckle plate is used to fasten and limit the alignment of the vehicle placed on the main support plate.

10. A vehicle rear rack according to claim 9, characterized in that: A horizontal plate is provided on the bottom surface of the crossbeam and the upper surface of the middle beam, and each horizontal plate is provided with an opening that is aligned vertically. The upper and lower ends of a movable tube are fixedly connected to the upper and lower horizontal plates, respectively. A bent tube that can swing horizontally and move vertically is provided on the movable tube. The upper buckle plate is provided at the end of the bent tube above the main support plate.

Images