Lifting bed and vehicle
The lifting and tilting of the bed is achieved through the differential device of the lifting bed, which solves the problem of excessive space occupied by the bed in the conventional front, and improves the driver's quality of life and the cleanliness of the bed.
Patent Information
- Application Number
- CN202510591391.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2025-08-19
AI Technical Summary
The bed in the conventional front occupies most of the space, making the driver's living space very small and affecting the quality of life.
A lifting bed is designed, and the bed body is connected to a differential device, which can move back and forth in the vertical direction, and the rising and inclination of the bed body is achieved through the synchronous rotation of the rotating part and the winding part. Using the length difference between the rotating unit and the winding unit, the bed body is fitted with the top of the vehicle casing in the second state, providing more moving space and preventing dust from entering.
It improves the driver's quality of life, provides more space for movement, and keeps the bed clean.
Smart Images
Figure CN120503688A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of lift beds, and in particular to a lift bed and a vehicle. Background Art
[0002] Long-haul trucks typically consist of several major components: the front (cab), engine and powertrain, transmission, cargo box / trailer, and electrical system. These components are closely linked through meticulous design and manufacturing, enabling the driver to operate and live a normal life.
[0003] The front of the vehicle (the cab) is the area most closely associated with the driver's life and is directly related to the driver's quality of life during driving. However, the bed in a conventional vehicle front occupies most of the space, leaving the driver's living space very small. Summary of the Invention
[0004] The object of the present application is to provide a lifting bed and a vehicle.
[0005] According to a first aspect of an embodiment of the present application, there is provided a lifting bed, comprising:
[0006] Bed;
[0007] A differential device, the bed is connected to the differential device, and the bed includes a first state and a second state, and is driven by the differential device to move back and forth in a vertical direction and switch between the first state located at the bottom and the second state located at the top;
[0008] Wherein, in the first state, the bed is parallel to the horizontal plane; in the second state, the bed is arranged at an angle to the horizontal plane.
[0009] Based on the above arrangement, in the first state, since the bed is parallel to the horizontal plane and located below, it can provide a place for the driver to rest. In the second state, the bed fits in with the top of the vehicle's shell. Therefore, when the driver needs to rest, he can adjust the bed to the first state to rest, and after resting, he can adjust the bed to the second state to obtain more space for activities, thereby improving his quality of life. In addition, since the top of the vehicle's shell is tilted and the bed is set at an angle to the horizontal plane, in the second state, on the one hand, it can fit in with the slope of the top, thereby maximizing the space in the cab, and on the other hand, it prevents dust and other debris from falling onto the bed, thereby ensuring the cleanliness of the bed.
[0010] a rotating portion, the rotating portion comprising a first rotating unit and a second rotating unit, the first rotating unit and the second rotating unit rotating synchronously, and a circumference of the first rotating unit being smaller than a circumference of the second rotating unit;
[0011] a winding portion, the winding portion comprising a first winding unit and a second winding unit, the first winding unit being connected to the first rotating unit, and the second winding unit being connected to the second rotating unit;
[0012] The first winding unit and the second winding unit are respectively wound on the first rotating unit and the second rotating unit under the rotation of the first rotating unit and the second rotating unit;
[0013] The length of the first winding unit wound on the first rotating unit is a first length, and the length of the second winding unit wound on the second rotating unit is a second length;
[0014] The first length is smaller than the second length.
[0015] It should be noted that the synchronous rotation of the first rotating unit and the second rotating unit can be achieved by connecting the two together to achieve synchronous rotation, or by rotating by two different machines but maintaining the same rotation. As long as the first rotating unit and the second rotating unit rotate synchronously, they are within the protection scope of this application. In addition, the manner in which the first winding unit and the second winding unit are wound around the first rotating unit and the second rotating unit includes, on the one hand, the first winding unit and the second winding unit themselves overlapping, that is, the lower layer is stacked on the upper layer. On the other hand, it includes the first winding unit and the second winding unit themselves not overlapping, that is, the lower layer is not stacked on the upper layer. Of course, the manner in which some overlap and some do not overlap is also within the protection scope of this application.
[0016] Based on the above setting, under the rotation of the first rotating unit and the second rotating unit, the first winding unit and the second winding unit are gradually convoluted on the first rotating unit and the second rotating unit, and then the length of the first winding unit and the second winding unit not on the first rotating unit and the second rotating unit is reduced, and then shrinks upward, realizing the raising of the bed, reserving more space for the original cab, making the driver more comfortable.
[0017] Furthermore, because the first length is shorter than the second length, the lengths of the first and second winding units remaining externally differ after the first and second rotating units rotate. Consequently, when the bed is in the second state, it is positioned at an angle to the horizontal plane. Furthermore, because the top of the vehicle's shell is tilted, the bed is positioned at an angle to the horizontal plane. Therefore, in the second state, the bed can conform to the top slope, maximizing cab space while also preventing dust and other debris from falling onto the bed, thereby ensuring a clean bed.
[0018] In one embodiment, the first winding unit and / or the second winding unit is in a strip shape;
[0019] The first winding unit of the next circle is wound on the first winding unit of the previous circle, and the second winding unit of the next circle is wound on the second winding unit of the previous circle.
[0020] Based on the above settings, on the one hand, the further back the first winding unit and / or the second winding unit are, the longer the length required for the number of turns is, and thus, at the same length, fewer turns are required. On the other hand, the stop instruction can also be set based on the characteristic that the overlap causes the diameter to become longer and longer. For example, the distance between the first rotating unit and the second rotating unit and the bed can be pre-set, and the distance is just occupied by the wound first winding unit and / or the second winding unit when the bed rises to the top, causing the first rotating unit and the second rotating unit to be unable to rotate, thereby achieving a stop. For another example, a corresponding stop switch can be set, and when the first winding unit and / or the second winding unit are wound to a certain thickness, the stop switch can be pressed to achieve the stop of the first rotating unit and the second rotating unit.
[0021] In one embodiment, the differential device includes a driving unit, and the first rotating unit and the second rotating unit are respectively connected to the driving unit and driven to rotate by the same driving unit.
[0022] Based on the above configuration, a single drive unit can directly drive the first rotating unit and the second rotating unit, which can ensure that the first rotating unit and the second rotating unit can rotate absolutely synchronously, and avoid the waste of resources caused by using multiple drive units.
[0023] In one embodiment, the differential device includes a rotating shaft, and the first rotating unit and the second rotating unit are coaxially arranged on the rotating shaft;
[0024] The driving unit is connected to the rotating shaft to drive the rotating shaft to rotate.
[0025] Based on the above arrangement, the first rotating unit and the second rotating unit will rotate directly along with the rotation of the rotating shaft, that is, they can be completely consistent, thereby achieving more precise synchronization and facilitating subsequent control.
[0026] In one embodiment, the first rotating unit includes a first fixing block, and the first fixing block is fixed to the rotating shaft to form the first rotating unit;
[0027] The second rotating unit includes a second fixing block, and the second fixing block is fixed to the rotating shaft to form the second rotating unit;
[0028] The first fixing block and the second fixing block are both configured to be arc-shaped, and the radius of the second fixing block is larger than that of the first fixing block.
[0029] Based on the above arrangement, the first rotating unit and the second rotating unit are formed by the fixation of the first fixed block and the second fixed block. Therefore, when the position needs to be changed, it is only necessary to disassemble the original position and fix it at the position to be changed. In addition, when the first fixed block and the second fixed block are damaged, it is only necessary to disassemble and replace the first fixed block and the second fixed block. In addition, the first winding unit can be fixed between the first fixed block and the rotating shaft, and the second winding unit can be fixed between the second fixed block and the rotating shaft. This fixing method can more firmly fix the first winding unit and the first rotating unit, as well as the second winding unit and the second rotating unit, and is convenient for disassembly.
[0030] In one embodiment, a difference in radius between the second fixing block and the first fixing block is greater than or equal to 0.1 cm and less than or equal to 1.5 cm.
[0031] With this arrangement, within this range, the bed can roughly fit in with the roof, providing a better storage experience. For example, the radius difference between the second fixing block and the first fixing block can be set to 0.1cm, 0.2cm, 0.3cm, 0.4cm, 0.5cm, 0.6cm, 0.7cm, 0.8cm, 0.9cm, 1.0cm, 1.1cm, 1.2cm, 1.3cm, 1.4cm, and 1.5cm.
[0032] In one embodiment, the first fixing block and the second fixing block are respectively detachably connected to the rotating shaft.
[0033] In one embodiment, the bed body includes a first side and a second side, the first winding unit extends outward from the first side and extends in a vertical direction, and the second winding unit extends outward from the second side and extends in a vertical direction;
[0034] The first winding unit and the second winding unit have the same length.
[0035] Based on the above arrangement, the first winding unit and the second winding unit extend from both sides respectively, thereby providing traction for both sides of the bed, and thus the bed will not be unstable due to the different forces applied.
[0036] In one embodiment, the lifting bed includes a connecting rod and a driving unit, wherein the driving unit is connected to the connecting rod and drives the connecting rod to rotate;
[0037] The number of the differential devices includes multiple, the multiple differential devices are arranged at intervals, and the multiple differential devices are connected to the connecting rod and rotate synchronously under the rotation of the connecting rod.
[0038] Based on the above arrangement, the multiple differential devices can provide more pulling force to the bed, so that it is better supported, thereby making the bed more stable. In addition, the multiple differential devices are connected by a connecting rod, thereby achieving synchronous movement and thus achieving the same tilt on one side.
[0039] In addition, in this embodiment, the diameters of the plurality of differential devices may be set to be different, so that various parts of the bed can be pulled to corresponding positions according to actual conditions.
[0040] According to a third aspect of an embodiment of the present application, a vehicle is provided, comprising the lifting bed described in any one of the above embodiments, wherein the vehicle comprises a vehicle shell, the top of the vehicle shell is tilted, and when the lifting bed is in a second state, the bed body is arranged in contact with the top.
[0041] The beneficial technical effects brought about by the technical solutions provided by the embodiments of the present application are:
[0042] By providing a rotating portion and a winding portion, the rotating portion includes a first rotating unit and a second rotating unit, the first rotating unit and the second rotating unit rotate synchronously, and the circumference of the first rotating unit is smaller than the circumference of the second rotating unit, and the winding portion includes a first winding unit and a second winding unit, the first winding unit is connected to the first rotating unit, and the second winding unit is connected to the second rotating unit, and the first winding unit and the second winding unit are respectively wound around the first rotating unit and the second rotating unit under the rotation of the first rotating unit and the second rotating unit, the length of the first winding unit wound around the first rotating unit is a first length, the length of the second winding unit wound around the second rotating unit is a second length, and the first length is smaller than the second length.
[0043] Based on the above arrangement, as the first rotating unit and the second rotating unit rotate, the first winding unit and the second winding unit are gradually convoluted on the first rotating unit and the second rotating unit, so that the length of the first winding unit and the second winding unit not on the first rotating unit and the second rotating unit is reduced, that is, the first winding unit and the second winding unit in the vertical direction continue to decrease, and then shrink upward, thereby realizing the raising of the bed, reserving more space for the original cab, and making the driver more comfortable.
[0044] Furthermore, because the first length is shorter than the second length, the lengths of the first and second winding units remaining externally differ after the first and second rotating units rotate. Consequently, when the bed is in the second state, it is positioned at an angle to the horizontal plane. Furthermore, because the top of the vehicle's shell is tilted, the bed is positioned at an angle to the horizontal plane. Therefore, in the second state, the bed can conform to the top slope, maximizing cab space while also preventing dust and other debris from falling onto the bed, thereby ensuring a clean bed. BRIEF DESCRIPTION OF THE DRAWINGS
[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0046] Figure 1 Schematic diagram of the structure of a lifting bed in a first state according to an embodiment of the present application.
[0047] Figure 2 Schematic diagram of the structure of a lifting bed in a second state according to an embodiment of the present application.
[0048] Figure 3 Schematic diagram of the coordination between the differential device and the bed according to one embodiment of the present application.
[0049] Figure 4 Schematic diagram of a partial structure of a differential device according to an embodiment of the present application.
[0050] Figure 5 Schematic diagram of the coordination of the rotating portion, the winding portion, and the rotating shaft according to an embodiment of the present application.
[0051] Figure 6 Schematic diagram of a partial explosion of a rotating portion, a winding portion and a rotating shaft according to an embodiment of the present application.
[0052] Figure 7 FIG1 is an exploded schematic diagram of a rotating part according to an embodiment of the present application.
[0053] Description of Reference Numerals
[0054] Lift bed 1
[0055] Differential device 10
[0056] Rotating portion 100
[0057] The first rotating unit 110
[0058] First fixing block 111
[0059] The second rotating unit 120
[0060] Second fixing block 121
[0061] Winding portion 200
[0062] The first winding unit 210
[0063] Second winding unit 220
[0064] Drive unit 300
[0065] Rotating shaft 400
[0066] Connecting rod 500
[0067] Bed 20
[0068] First side 20A
[0069] Second side 20B
[0070] First state A1
[0071] Second state A2 DETAILED DESCRIPTION
[0072] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0073] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.
[0074] A long-haul truck typically consists of several major components: the front (cab), engine and powertrain, transmission, cargo box / trailer, and electrical system. The front (cab) is where the driver operates the truck and includes a cockpit and rest area. The cockpit features a steering wheel, seat, instrument panel, and other controls. Some long-haul trucks also include a small living area with a bed, refrigerator, and storage for the driver's rest. The engine and powertrain, typically located below or on the side of the front, are the truck's power source. They provide propulsion for the entire vehicle and influence performance, such as speed and gradeability. The transmission system, including components such as the clutch, transmission, and drive shaft, is responsible for transmitting engine power to the drive wheels, enabling the truck to move forward and backward and adjusting speed and torque. Depending on its purpose, the cargo box / trailer can be a closed box, a flatbed, or a dedicated refrigerated box, used to load and protect the cargo. For a tractor, it is connected to the trailer via a saddle. The electrical system is used to provide power support, including lighting, signal lights, in-vehicle electrical appliances, etc., to ensure the needs of night driving and communication.
[0075] These components are meticulously designed and manufactured to ensure a seamless connection between the driver and their surroundings. The front of the vehicle (the cab) is the area most closely connected to the driver's daily life, directly impacting their quality of life while driving. However, in conventional front-end vehicles, the bed 20 occupies the vast majority of the space, leaving the driver's living space very limited.
[0076] The present application provides a lifting bed 1, which includes a bed body 20 and a differential device 10. In addition, the lifting bed 1 can be used in the above-mentioned long-distance transport truck, and can also be used in other applicable scenarios, such as a small room.
[0077] refer to Figure 1 、 Figure 2 as well as Figure 3 As shown, the bed 20 is connected to the differential device 10 and has a first state A1 and a second state A2. Driven by the differential device 10, the bed 20 can move back and forth in the vertical direction and switch between the first state A1 located at the bottom and the second state A2 located at the top. In the first state A1, the bed 20 is parallel to the horizontal plane, and in the second state A2, the bed 20 is arranged at an angle to the horizontal plane.
[0078] Based on the above arrangement, in the first state A1, since the bed 20 is parallel to the horizontal plane and is located below, it can provide a place for the driver to rest. In the second state A2, the bed 20 fits in with the top of the vehicle's shell. Thus, when the driver needs to rest, he can adjust the bed 20 to the first state A1 to rest, and after resting, he can adjust the bed 20 to the second state A2 to obtain more room for activities, thereby improving his quality of life. In addition, since the top of the vehicle's shell is tilted, the bed 20 is set at an angle to the horizontal plane. Therefore, in the second state A2, on the one hand, it can fit in with the slope of the top, thereby maximizing the space in the cab, and on the other hand, it also prevents dust and other debris from falling onto the bed 20, thereby ensuring the cleanliness of the bed 20.
[0079] In one embodiment, reference Figure 3-Figure 7 As shown, the differential device 10 includes a rotating portion 100 and a winding portion 200. The rotating portion 100 includes a first rotating unit 110 and a second rotating unit 120. The first rotating unit 110 and the second rotating unit 120 rotate synchronously, and the circumference of the first rotating unit 110 is smaller than the circumference of the second rotating unit 120. The winding portion 200 includes a first winding unit 210 and a second winding unit 220. The first winding unit 210 is connected to the first rotating unit 110, and the second winding unit 220 is connected to the second rotating unit 120. Here, reference is made to Figure 6 As shown, the first winding unit 210 can be mounted in the first rotating unit 110 and fixedly connected to the first rotating unit 110. Similarly, the second winding unit 220 can be mounted in the second rotating unit 120 and fixedly connected to the second rotating unit 120. The winding portion 200 can be a belt with a certain width or a rope, which is not limited in this application.
[0080] The first winding unit 210 and the second winding unit 220 are respectively wound around the first rotating unit 110 and the second rotating unit 120 under the rotation of the first rotating unit 110 and the second rotating unit 120. The length of the first winding unit 210 wound around the first rotating unit 110 is a first length, and the length of the second winding unit 220 wound around the second rotating unit 120 is a second length, and the first length is less than the second length.
[0081] It should be noted that the synchronous rotation of the first rotating unit 110 and the second rotating unit 120 can be achieved by being connected together to achieve synchronous rotation, or by being rotated by two different machines but maintaining the same rotation. As long as the first rotating unit 110 and the second rotating unit 120 rotate synchronously, they are within the protection scope of this application. In addition, the manner in which the first winding unit 210 and the second winding unit 220 are wound around the first rotating unit 110 and the second rotating unit 120 includes, on the one hand, the first winding unit 210 and the second winding unit 220 themselves overlapping, that is, the lower layer is stacked on the upper layer. On the other hand, it includes the first winding unit 210 and the second winding unit 220 themselves not overlapping, that is, the lower layer is not stacked on the upper layer. Of course, the manner in which some overlap and some do not overlap is also within the protection scope of this application.
[0082] Based on the above arrangement, as the first rotating unit 110 and the second rotating unit 120 rotate, the first winding unit 210 and the second winding unit 220 are gradually convoluted on the first rotating unit 110 and the second rotating unit 120, so that the length of the first winding unit 210 and the second winding unit 220 not on the first rotating unit 110 and the second rotating unit 120 is reduced, that is, the first winding unit 210 and the second winding unit 220 in the vertical direction are continuously reduced, and then contracted upward, thereby realizing the rising of the bed 20, reserving more space for the original cab, and making the driver more comfortable.
[0083] Furthermore, because the first length is smaller than the second length, the lengths of the first winding unit 210 and the second winding unit 220 remaining outside are different after the first rotating unit 110 and the second rotating unit 120 rotate. Consequently, when the bed 20 is in the second state A2, the bed 20 is positioned at an angle to the horizontal plane. Furthermore, because the top of the vehicle's shell is tilted, the bed 20 is positioned at an angle to the horizontal plane. Therefore, in the second state A2, the bed 20 can conform to the slope of the top, maximizing the space in the cab, while also preventing dust and other debris from falling onto the bed 20, thereby ensuring a clean bed 20.
[0084] In one embodiment, reference Figure 3-Figure 7As shown, the first winding unit 210 and / or the second winding unit 220 are in the shape of a strip. The first winding unit 210 of the latter circle is wound on the first winding unit 210 of the former circle, and the second winding unit 220 of the latter circle is wound on the second winding unit 220 of the former circle. It should be noted that the first winding unit 210 and / or the second winding unit 220 are configured in the shape of a strip. That is, the first winding unit 210 and / or the second winding unit 220 are configured in the shape of a strip, so that the latter circle can be stacked on the former circle. The "and / or" here can be understood as that the first winding unit 210 and the second winding unit 220 can be configured in the shape of a strip individually, or can be configured in the shape of a strip at the same time.
[0085] Based on the above settings, on the one hand, the further back the first winding unit 210 and / or the second winding unit 220 are, the longer the length required for the number of turns is, and thus, with the same length, fewer turns are required. On the other hand, a stop instruction can also be set based on the characteristic that the overlap causes the diameter to become longer and longer. For example, the distance between the first rotating unit 110 and the second rotating unit 120 and the bed 20 can be pre-set, and this distance is just filled by the wound first winding unit 210 and / or the second winding unit 220 when the bed 20 rises to the top, causing the first rotating unit 110 and the second rotating unit 120 to be unable to rotate, thereby achieving a stop. For another example, a corresponding stop switch can be set. When the first winding unit 210 and / or the second winding unit 220 are wound to a certain thickness, the stop switch can be pressed to achieve the stop of the first rotating unit 110 and the second rotating unit 120.
[0086] In one embodiment, reference Figure 3 and Figure 4 As shown, the differential device 10 includes a drive unit 300, and the first rotating unit 110 and the second rotating unit 120 are respectively connected to the drive unit 300 and driven to rotate by the same drive unit 300. The drive unit 300 here can be a rotating motor or other rotatable device. It should also be noted that the first rotating unit 110 and the second rotating unit 120 are respectively connected to the drive unit 300, which can include direct connection between the first rotating unit 110 and the second rotating unit 120 and the drive unit 300, or indirect connection between the first rotating unit 110 and the second rotating unit 120 and the drive unit 300.
[0087] Based on the above configuration, a single driving unit 300 can directly drive the first rotating unit 110 and the second rotating unit 120 . On the one hand, this can ensure that the first rotating unit 110 and the second rotating unit 120 can rotate absolutely synchronously, and on the other hand, it can avoid the waste of resources caused by using multiple driving units 300 .
[0088] In one embodiment, reference Figure 4-Figure 7 As shown, the differential device 10 includes a rotating shaft 400 , the first rotating unit 110 and the second rotating unit 120 are coaxially disposed on the rotating shaft 400 , and the driving unit 300 is connected to the rotating shaft 400 to drive the rotating shaft 400 to rotate.
[0089] Based on the above configuration, the first rotating unit 110 and the second rotating unit 120 will rotate directly along with the rotation of the rotating shaft 400 , that is, they can be completely consistent, thereby achieving more precise synchronization and facilitating subsequent control.
[0090] In one embodiment, reference Figure 7 As shown, the first rotating unit 110 includes a first fixing block 111, which is fixed to the rotating shaft 400 to form the first rotating unit 110. The second rotating unit 120 includes a second fixing block 121, which is fixed to the rotating shaft 400 to form the second rotating unit 120. The first fixing block 111 and the second fixing block 121 are both configured in an arc shape, and the radius of the second fixing block 121 is larger than that of the first fixing block 111.
[0091] Based on the above arrangement, the first rotating unit 110 and the second rotating unit 120 are formed by the fixing of the first fixing block 111 and the second fixing block 121. Therefore, when the position needs to be changed, it is only necessary to disassemble the original position and fix it in the desired position. In addition, if the first fixing block 111 and the second fixing block 121 are damaged, they only need to be removed and replaced.
[0092] In one embodiment, the first fixing block 111 and the second fixing block 121 are each detachably connected to the rotating shaft 400. Based on this arrangement, the first winding unit 210 can be fixed between the first fixing block 111 and the rotating shaft 400, and the second winding unit 220 can be fixed between the second fixing block 121 and the rotating shaft 400. This fixing method can more securely fix the first winding unit 210 to the first rotating unit 110, and the second winding unit 220 to the second rotating unit 120, and facilitates disassembly.
[0093] During experiments, the inventors discovered that if the radius difference between the second fixing block 121 and the first fixing block 111 is too small, it becomes difficult to tilt the bed 20 to fit the vehicle roof. However, if the radius difference between the second fixing block 121 and the first fixing block 111 is too large, the bed 20 will tilt too much, potentially exceeding 90°, making it impossible to fit the vehicle roof.
[0094] The present application sets the radius difference between the second fixing block 121 and the first fixing block 111 to be greater than or equal to 0.1 cm and less than or equal to 1.5 cm. With this setting, within this range, the bed 20 can roughly fit with the roof, providing a better storage experience. For example, the radius difference between the second fixing block 121 and the first fixing block 111 can be set to 0.1 cm, 0.2 cm, 0.3 cm, 0.4 cm, 0.5 cm, 0.6 cm, 0.7 cm, 0.8 cm, 0.9 cm, 1.0 cm, 1.1 cm, 1.2 cm, 1.3 cm, 1.4 cm, or 1.5 cm.
[0095] In one embodiment, reference Figure 3 As shown, the bed body 20 includes a first side 20A and a second side 20B, the first winding unit 210 extends outward from the first side 20A and extends in a vertical direction, the second winding unit 220 extends outward from the second side 20B and extends in a vertical direction, and the first winding unit 210 and the second winding unit 220 have the same length.
[0096] Based on the above configuration, the first winding unit 210 and the second winding unit 220 extend from both sides respectively, thereby providing traction to both sides of the bed 20, and thus the bed 20 will not be unstable due to the different forces applied.
[0097] In one embodiment, reference Figure 3 and Figure 4 As shown, the lift bed 1 includes a connecting rod 500 and a drive unit 300. The drive unit 300 is connected to the connecting rod 500 and drives the connecting rod 500 to rotate. There are multiple differential devices 10, which are arranged at intervals and connected to the connecting rod 500, and rotate synchronously with the rotation of the connecting rod 500. It should be noted that the connecting rod 500 here can be integrated with the rotating shaft 400, or it can be separately provided and fixed to each other.
[0098] Based on the above arrangement, the multiple differential devices can provide more pulling force to the bed 20, so that it is better supported, thereby making the bed 20 more stable. In addition, the multiple differential devices 10 are connected by a connecting rod 500, thereby achieving synchronous movement and thus achieving the same tilt on one side.
[0099] In addition, in this embodiment, the diameters of the plurality of differential devices 10 can be set to be different, and then the various parts of the bed 20 can be pulled to the corresponding positions according to the actual situation. Figure 2 As shown, the head of the bed body 20 may be slightly inconsistent with other parts during the pulling-up process, and this effect can be achieved by adjusting the radius length of the differential device of the head.
[0100] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.
Claims
1. A lifting bed, characterized in that: The lifting bed comprises: Bed; A differential device, the bed is connected to the differential device, and the bed includes a first state and a second state, and is driven by the differential device to move back and forth in a vertical direction and switch between the first state located at the bottom and the second state located at the top; Wherein, in the first state, the bed is parallel to the horizontal plane; in the second state, the bed is arranged at an angle to the horizontal plane.
2. The lifting bed according to claim 1, wherein: The differential device includes a rotating portion and a winding portion, the rotating portion includes a first rotating unit and a second rotating unit, the first rotating unit and the second rotating unit rotate synchronously, the winding portion includes a first winding unit and a second winding unit, the first winding unit is connected to the first rotating unit, and the second winding unit is connected to the second rotating unit; Wherein, the first winding unit and the second winding unit are respectively used to be wound on the first rotating unit and the second rotating unit under the rotation of the first rotating unit and the second rotating unit; the length of the first winding unit wound on the first rotating unit is a first length, and the length of the second winding unit wound on the second rotating unit is a second length; the first length is smaller than the second length.
3. The lifting bed according to claim 2, wherein: The first winding unit and / or the second winding unit are in a strip shape; The first winding unit of the next circle is wound on the first winding unit of the previous circle, and the second winding unit of the next circle is wound on the second winding unit of the previous circle.
4. The lifting bed according to claim 2, wherein: The differential device includes a driving unit, and the first rotating unit and the second rotating unit are respectively connected to the driving unit and driven to rotate by the same driving unit.
5. The lifting bed according to claim 4, characterized in that: The differential device includes a rotating shaft, and the first rotating unit and the second rotating unit are coaxially arranged on the rotating shaft; The driving unit is connected to the rotating shaft to drive the rotating shaft to rotate.
6. The lifting bed according to claim 5, wherein: The first rotating unit includes a first fixing block, and the first fixing block is fixed to the rotating shaft to form the first rotating unit; The second rotating unit includes a second fixing block, and the second fixing block is fixed to the rotating shaft to form the second rotating unit; The first fixing block and the second fixing block are both configured to be arc-shaped, and the radius of the second fixing block is larger than that of the first fixing block.
7. The lifting bed according to claim 6, wherein: A difference in radius between the second fixing block and the first fixing block is greater than or equal to 0.1 cm and less than or equal to 1.5 cm.
8. The lifting bed according to claim 6, wherein: The first fixing block and the second fixing block are respectively detachably connected to the rotating shaft.
9. The lifting bed according to claim 1, wherein: The bed body includes a first side and a second side, the first winding unit extends outward from the first side and extends in a vertical direction, and the second winding unit extends outward from the second side and extends in a vertical direction; The first winding unit and the second winding unit have the same length.
10. The lifting bed according to claim 9, wherein: The lifting bed includes a connecting rod and a driving unit, wherein the driving unit is connected to the connecting rod and drives the connecting rod to rotate; The number of the differential devices includes multiple, the multiple differential devices are arranged at intervals, and the multiple differential devices are connected to the connecting rod and rotate synchronously under the rotation of the connecting rod.
11. A vehicle, characterized in that: The vehicle comprises a lifting bed as described in any one of claims 1 to 10, wherein the vehicle comprises a vehicle shell, the top of the vehicle shell is tilted, and when the lifting bed is in the second state, the bed body is arranged in contact with the top.