Elbow four-wheel recumbent vehicle

Abstract

The utility model discloses an elbow pipe four-wheel recumbent vehicle which comprises a lying plate, a hand-cranking driving mechanism and two anti-collision frames, a protruding backrest box is fixedly arranged at one end of the upper portion of the lying plate, the upper portion of the protruding backrest box is in an opening shape, an adjustable backrest is arranged in the opening of the protruding backrest box, and the hand-cranking driving mechanism is used for adjusting the angle of the adjustable backrest. Two reinforcing frame rods are fixedly installed at the bottom of the lying plate in the length direction, two anti-collision frames are located at the two ends of the bottom of the lying plate and fixedly connected with the reinforcing frame rods, the two ends of each anti-collision frame protrude upwards to form a V-shaped opening, and universal wheels are detachably installed in the V-shaped openings. The reinforcing frame rods are arranged at the bottom of the lying plate, and the anti-collision frames are installed at the two ends of the reinforcing frame plate, so that the overall structural strength can be improved, and installation of wheels of different sizes can be adapted; the angle of the adjustable backrest can be adjusted through the hand-cranking driving mechanism, so that a user can conveniently adjust the backrest according to needs, and the comfort level is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of recumbent bikes, and particularly to a bent-tube four-wheel recumbent bike. Background Art

[0002] As the name implies, a four-wheel recumbent bike is a bicycle with four wheels that allows the rider to ride lying down. It retains the power mode and most of the structure of a bicycle, but has made significant innovations in design to meet the rider's requirements for comfort, stability, and personalization.

[0003] Patent authorization announcement number CN212044684U proposes a foldable and multifunctional recumbent bike. Multiple rollers are connected to the bottom of the main frame, which can facilitate the overall movement of the device. A main cushion is connected to the main frame. One end of the main frame is movably connected to a movable rod through a connecting pin. A sub-cushion is connected to the movable rod. The other end of the movable rod is connected to a sub-frame. A folding cushion is connected to the upper end of the sub-frame. When the movable rod is unfolded, the main cushion, the sub-cushion, and the folding cushion are arranged on the same horizontal plane. The multiple rollers at the bottom can support each component. When the movable device is laid down by maintenance personnel, it is convenient to enter the bottom of the vehicle disc, and the maintenance is convenient and efficient.

[0004] However, there are still some disadvantages in the actual use of the above device. More obvious is that the angle of the backrest cannot be adjusted. When the user rides in the same position for a long time, the head and neck are prone to fatigue and the comfort level is not high.

[0005] Therefore, it is very necessary to invent a bent-tube four-wheel recumbent bike to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a bent-tube four-wheel recumbent bike, by setting an adjustable backrest, to solve the problem of low comfort caused by inconvenient adjustment of the backrest in the above background art.

[0007] According to one aspect of the present disclosure, the following technical solution is provided: A bent-tube four-wheel recumbent bike includes a lying board, and also includes a hand-crank driving mechanism and two anti-collision frames. One end of the upper part of the lying board is fixedly provided with a protruding backrest box. The upper part of the protruding backrest box is open. An adjustable backrest is arranged in its opening. The hand-crank driving mechanism is used to adjust the angle of the adjustable backrest. Two reinforcing frame rods are fixedly installed along the length direction at the bottom of the lying board. The two anti-collision frames are located at both ends of the bottom of the lying board. The anti-collision frames are fixedly connected to the reinforcing frame rods. The anti-collision frames are of rectangular frame structure. Both ends of the anti-collision frames bulge upward to form a V-shaped opening. A universal wheel is detachably installed in the V-shaped opening.

[0008] The bent-pipe four-wheel reclining vehicle according to at least one embodiment of the present disclosure, wherein the adjustable backrest includes a support bottom plate and a support rod. One end of the support bottom plate is movably hinged and installed inside one end of the protruding backrest box. A guide rail is fixedly installed at the inner bottom of the adjustable backrest, and a slider is slidably installed on the guide rail. One end of the support rod is movably hinged and installed at the bottom of the support bottom plate, and the other end of the support rod is movably hinged to the slider.

[0009] The bent-pipe four-wheel reclining vehicle according to at least one embodiment of the present disclosure, wherein the hand-crank drive mechanism includes a threaded rod, a first bevel gear, and a second bevel gear. A threaded hole penetrating through both ends is provided on the slider. A device cavity communicating with the protruding backrest box is opened inside the reclining board. The threaded rod is inserted into the guide rail and connected to the threaded hole of the slider in communication. The first bevel gear and the second bevel gear are located in the device cavity. The first bevel gear is fixedly installed at one end of the threaded rod, and the second bevel gear meshes with the first bevel gear. A rotating shaft is fixedly installed at one end of the second bevel gear, and the rotating shaft penetrates outside the reclining board.

[0010] The bent-pipe four-wheel reclining vehicle according to at least one embodiment of the present disclosure, wherein a limiting ring is fixedly installed on the surface of the threaded rod, and two limiting bearings are fixedly installed inside the device cavity, and the two limiting bearings clamp the limiting ring.

[0011] The bent-pipe four-wheel reclining vehicle according to at least one embodiment of the present disclosure, wherein a soft pillow layer is fixedly provided on the upper part of the support bottom plate, and the soft pillow layer is made of cloth material.

[0012] The bent-pipe four-wheel reclining vehicle according to at least one embodiment of the present disclosure, wherein a turntable is fixedly installed at the outer end of the rotating shaft.

[0013] The technical effects and advantages of the present utility model:

[0014] By arranging a reinforcing frame rod at the bottom of the reclining board and installing anti-collision frames at both ends of the reinforcing frame board, the overall structural strength can be increased, and it can also adapt to the installation of wheels of different sizes;

[0015] The angle adjustment of the adjustable backrest can be realized through the hand-crank drive mechanism, which is convenient for the user to adjust according to needs and improves comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure, and the drawings are included in this specification and form a part of this specification.

[0017] Figure 1 It is a schematic diagram of the overall structure of a bent-pipe four-wheel reclining vehicle according to an embodiment of the present disclosure.

[0018] Figure 2A cross-sectional view of a bent-tube four-wheel reclining vehicle according to an embodiment of the present disclosure.

[0019] Figure 3 is Figure 2 An enlarged schematic view of the structure at position A in

[0020] Figure 4 A bottom view of a bent-tube four-wheel reclining vehicle according to an embodiment of the present disclosure.

[0021] The specific reference numerals in the figure are as follows:

[0022] 1. Reclining board; 11. Device cavity; 2. Bulging backrest box; 3. Reinforcement frame rod; 4. Anti-collision frame; 41. V-shaped opening; 5. Universal wheel; 6. Adjustable backrest; 61. Support bottom plate; 62. Soft pillow layer; 63. Support rod; 7. Hand-crank drive mechanism; 71. Threaded rod; 72. First bevel gear; 73. Second bevel gear; 74. Limit ring; 75. Limit bearing; 8. Guide rail; 82. Slide block. Specific embodiments

[0023] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "on", "higher", and "side (e.g., as in "side wall") to describe the relationship between one component and another (other) component as shown in the drawings. In addition to the orientation depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacturing. For example, if the device in the drawing is flipped, a component described as "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. In addition, the device can be positioned otherwise (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted accordingly.

[0024] As Figures 1-4 shown, a bent-tube four-wheel reclining vehicle in the present disclosure includes a reclining board 1, and further includes a hand-crank drive mechanism 7 and two anti-collision frames 4. One end of the upper part of the reclining board 1 is fixedly provided with a bulging backrest box 2. The upper part of the bulging backrest box 2 is open, and an adjustable backrest 6 is arranged in its opening. The hand-crank drive mechanism 7 is used to adjust the angle of the adjustable backrest 6. Two reinforcement frame rods 3 are fixedly installed along the length direction at the bottom of the reclining board 1. The two anti-collision frames 4 are located at both ends of the bottom of the reclining board 1. The anti-collision frames 4 are fixedly connected to the reinforcement frame rods 3. The anti-collision frames 4 are of rectangular frame structure. Both ends of the anti-collision frames 4 bulge upward to form V-shaped openings 41. Universal wheels 5 are installed in the V-shaped openings 41 through bolts. The setting of the V-shaped openings 41 can meet the installation work of universal wheels 5 of different sizes.

[0025] In this embodiment, the adjustable backrest 6 includes a support bottom plate 61 and a support rod 63. One end of the support bottom plate 61 is movably hinged and installed at one end inside the protruding backrest box 2. A guide rail 8 is fixedly installed at the inner bottom of the adjustable backrest 6. The guide rail 8 is provided with a T-shaped chute along its length direction. A slider 82 is slidably installed in the T-shaped chute of the guide rail 8. One end of the support rod 63 is movably hinged and installed at the bottom of the support bottom plate 61, and the other end of the support rod 63 is movably hinged to the slider 82.

[0026] In this embodiment, the hand-crank drive mechanism 7 includes a threaded rod 71, a first bevel gear 72, and a second bevel gear 73. The slider 82 is provided with a threaded hole penetrating through both ends. A device cavity 11 communicating with the protruding backrest box 2 is formed inside the lying board 1. The threaded rod 71 is inserted into the guide rail 8 and connected to the threaded hole of the slider 82 in a communicating manner. The first bevel gear 72 and the second bevel gear 73 are located in the device cavity 11. The first bevel gear 72 is fixedly installed at one end of the threaded rod 71. The second bevel gear 73 meshes with the first bevel gear 72, and a rotating shaft is fixedly installed at one end of the second bevel gear 73. The rotating shaft penetrates through the outside of the lying board 1.

[0027] Furthermore, to prevent the threaded rod 71 from shifting, in this embodiment, a limit ring 74 is fixedly installed on the surface of the threaded rod 71, and two limit bearings 75 are fixedly installed inside the device cavity 11. The two limit bearings 75 clamp the limit ring 74.

[0028] To improve comfort, in this embodiment, a soft pillow layer 62 is fixedly provided on the upper part of the support bottom plate 61, and the soft pillow layer 62 is made of cloth material.

[0029] Furthermore, to facilitate the user to rotate the rotating shaft to drive the second bevel gear 73 to rotate, in this embodiment, a turntable is fixedly installed at the outer end of the rotating shaft.

[0030] The specific operation steps are as follows: When it is necessary to adjust the angle of the adjustable backrest 6, only need to rotate the second bevel gear 73 through the turntable. The second bevel gear 73 will drive the first bevel gear 72 to rotate, so that the threaded rod 71 drives the slider 82 to move. The slider 82 will push the support rod 63, and the support rod 63 will lift the adjustable backrest 6 to achieve angle adjustment.

[0031] In the description of this specification, the descriptions referring to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0032] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A bent-tube four-wheel reclining vehicle, comprising a reclining board, characterized in that: It also includes a hand-crank drive mechanism and two anti-collision frames. One end of the upper part of the lying board is fixedly provided with a protruding backrest box. The upper part of the protruding backrest box is open, and an adjustable backrest is arranged in its opening. The hand-crank drive mechanism is used to adjust the angle of the adjustable backrest. Two reinforcing frame rods are fixedly installed along the length direction at the bottom of the lying board. The two anti-collision frames are located at both ends of the bottom of the lying board, and the anti-collision frames are fixedly connected to the reinforcing frame rods. The anti-collision frames are of rectangular frame structure, and both ends of the anti-collision frames bulge upward to form a V-shaped opening, and a universal wheel is detachably installed in the V-shaped opening.

2. The elbow pipe four-wheel reclining vehicle according to claim 1, characterized in that: The adjustable backrest includes a support bottom plate and a support rod. One end of the support bottom plate is movably hinged and installed at one end inside the protruding backrest box. A guide rail is fixedly installed at the inner bottom of the adjustable backrest, and a slider is slidably installed on the guide rail. One end of the support rod is movably hinged and installed at the bottom of the support bottom plate, and the other end of the support rod is movably hinged to the slider.

3. The elbow-pipe four-wheel reclining vehicle according to claim 2, wherein: The hand-crank drive mechanism includes a threaded rod, a first bevel gear and a second bevel gear. A threaded hole penetrating through both ends is provided on the slider. A device cavity communicating with the protruding backrest box is opened inside the lying board. The threaded rod is inserted into the guide rail and connected to the threaded hole of the slider in a communicating manner. The first bevel gear and the second bevel gear are located in the device cavity. The first bevel gear is fixedly installed at one end of the threaded rod. The second bevel gear meshes with the first bevel gear, and a rotating shaft is fixedly installed at one end of the second bevel gear, and the rotating shaft penetrates through the outside of the lying board.

4. The elbow-tube four-wheel reclining vehicle according to claim 3, wherein: A limit ring is fixedly installed on the surface of the threaded rod, and two limit bearings are fixedly installed inside the device cavity, and the two limit bearings clamp the limit ring.

5. The elbow pipe four-wheel reclining vehicle according to claim 2, characterized in that: A soft pillow layer is fixedly provided on the upper part of the support bottom plate, and the soft pillow layer is made of cloth material.

6. The elbow pipe four-wheel reclining vehicle according to claim 3, wherein: A turntable is fixedly installed at the outer end of the rotating shaft.

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