Four-wheeler with function of turning over and folding rear wheel tube outwards

Abstract

The utility model provides a four-wheeler with a rear wheel tube outward turning and folding function. The four-wheeler comprises a frame main body and a plurality of rear wheel tubes, the rear wheel tube is rotatably matched with the frame main body, a locking mechanism and a rear wheel are arranged on the rear wheel tube, the locking mechanism is movably connected with the rear wheel tube, a plurality of locking matching parts are arranged on the frame main body, and when the rear wheel tube rotates to an unfolded state, the rear wheel is locked by the locking matching parts. And the locking mechanism is correspondingly locked and matched with the locking matching part, so that the rear wheel tube is locked on the frame main body. Compared with the prior art, the four-wheeler with the function of turning over and folding the rear wheel tube outwards has the advantages that the rear wheel tube can rotate towards the frame main body to realize quick folding during packaging or storage, and the rear wheel tube can be quickly unfolded for use during use, so that the packaging size is reduced, the folding operation is convenient and fast, the manipulative ability requirement of a user is reduced, and the service life of the four-wheeler is prolonged. And the rear wheel tube does not need to be detached from the frame main body, so that the situation that the brake cable is exposed due to detachment of the rear wheel tube is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical rehabilitation equipment, in particular to a four-wheel vehicle with the function of turning over and folding rear wheel tubes. Background Art

[0002] A four-wheel assisted walking vehicle is a medical rehabilitation device for assisting the walking of the elderly, the infirm or the mobility-impaired (hereinafter referred to as the special population). Similar assisted walking vehicles on the market generally include a foldable frame body to meet the demand for reducing the packaging volume, and a brake structure, a rear wheel tube and a rear wheel arranged on the rear wheel tube are arranged on the rear side of the frame body. The rear wheel tube is generally detachably locked with the frame body by a marble structure, but it is troublesome to remove the rear wheel tube each time, and after the rear wheel tube is removed, the brake line originally located on the rear wheel tube has nowhere to be fixed and is exposed. Utility Model Content

[0003] The utility model aims to overcome the shortcomings and deficiencies in the prior art and provide a four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function.

[0004] An embodiment of the utility model provides a four-wheeled vehicle with a rear wheel tube outward flipping and folding function, comprising: a vehicle frame body and a plurality of rear wheel tubes;

[0005] The rear wheel tube is rotatably matched with the frame body, a locking mechanism and a rear wheel are provided on the rear wheel tube, the locking mechanism is movably connected with the rear wheel tube, a plurality of locking matching parts are provided on the frame body, and when the rear wheel tube is rotated to an unfolded state, the locking mechanism and the locking matching parts are correspondingly locked and matched so that the rear wheel tube is locked on the frame body.

[0006] In some optional embodiments, the locking mechanism includes a buckle, which is rotatably connected to the rear wheel tube, and the locking mating portion is a limiting groove, and the buckle is limitedly mated with the limiting groove after rotation.

[0007] In some optional embodiments, a limiting ring is rotatably provided on the buckle, and the buckle rotates in a direction approaching or away from the limiting groove. After the buckle is limitedly engaged with the limiting groove through the limiting ring, the buckle rotates in a direction away from the limiting groove, so that the limiting ring cannot be separated from the limiting groove.

[0008] In some optional embodiments, an end sleeve is provided at the end of the rear wheel tube, the rear wheel tube is rotatably matched with the frame body through the end sleeve, and the buckle is provided on the end sleeve.

[0009] In some optional embodiments, a rotating seat is provided on one side of the end sleeve, and the rotating seat is connected to the frame body via a rotating shaft.

[0010] In some optional embodiments, a protective cover is provided on the rear wheel tube and is arranged around the buckle.

[0011] In some optional embodiments, a limit seat is provided on the frame body, a limit hook is provided on the limit seat, and the limit slot is located on the limit hook.

[0012] In some optional embodiments, a positioning groove is provided on the rear wheel tube, and when the rear wheel tube is rotated to an unfolded state, the limiting seat is limitedly matched with the positioning groove.

[0013] In some optional embodiments, a limiting hook is provided on the limiting seat, and the limiting groove is located on the limiting hook.

[0014] Compared with the prior art, the four-wheeled vehicle with the rear wheel tube outward flipping and folding function of the utility model can rotate the rear wheel tube toward the frame body to achieve quick folding when packed or stored, and can be quickly opened for use when in use, thereby reducing the packaging volume while folding the vehicle conveniently, reducing the user's hands-on ability requirements, and the rear wheel tube does not need to be removed from the frame body, avoiding the situation where the brake line is exposed due to the removal of the rear wheel tube.

[0015] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a four-wheel vehicle with a rear wheel tube outward flipping and folding function according to an embodiment of the utility model;

[0017] Figure 2 for Figure 1 An enlarged view of point A is shown;

[0018] Figure 3 It is a partial structural schematic diagram of a rear wheel tube of an embodiment of the utility model;

[0019] Figure 4 The figure is a partial structural diagram of a frame body according to an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 10. Frame body; 11. Locking fitting part; 12. Limiting seat; 20. Rear wheel tube; 21. End sleeve; 22. Rotating seat; 221. Rotating shaft; 23. Protective cover; 24. Positioning groove; 30. Locking mechanism; 31. Buckle; 32. Limiting ring; 40. Rear wheel. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. In the description of the utility model, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the utility model, the description with reference to the terms "one embodiment", "some optional implementations" or "some optional embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0026] See also Figure 1 An embodiment of the utility model provides a four-wheeled vehicle with a rear wheel tube outward flipping and folding function, comprising: a frame body 10 and a plurality of rear wheel tubes 20.

[0027] The rear wheel tube 20 is rotatably matched with the frame body 10, and a locking mechanism 30 and a rear wheel 40 are provided on the rear wheel tube 20. The locking mechanism 30 is movably connected with the rear wheel tube 20, and a plurality of locking matching parts 11 are provided on the frame body 10. When the rear wheel tube 20 is rotated to the unfolded state, the locking mechanism 30 and the locking matching parts 11 are correspondingly locked and matched to lock the rear wheel tube 20 on the frame body 10. When packaging or storing, the locking mechanism 30 releases the locking of the rear wheel tube 20, and the rear wheel tube 20 rotates toward the frame body 10 to achieve rapid folding, thereby achieving convenient operation while reducing the packaging volume, reducing the user's hands-on ability requirements, and the rear wheel tube 20 does not need to be removed from the frame body 10, avoiding the situation where the brake line is exposed due to the removal of the rear wheel tube 20.

[0028] In some optional embodiments, the locking mechanism 30 includes a buckle 31, which is rotatably connected to the rear wheel tube 20. The locking mating portion 11 is a limiting groove. After the buckle 31 is rotated, it is limitedly matched with the limiting groove, thereby locking the rear wheel tube 20 on the frame body 10. The buckle 31 is convenient for users to pull, making the operation more convenient.

[0029] In some optional embodiments, a limiting ring 32 is rotatably provided on the buckle 31, and the buckle 31 rotates in a direction close to or away from the limiting groove. After the buckle 31 is limitedly engaged with the limiting groove through the limiting ring 32, the buckle 31 rotates in a direction away from the limiting groove so that the limiting ring 32 cannot be separated from the limiting groove. When it is necessary to release the locking of the rear wheel tube 20, the buckle 31 rotates toward the limiting groove so that the limiting ring 32 can be loosened from the limiting groove.

[0030] In some optional embodiments, an end sleeve 21 is provided at the end of the rear wheel tube 20, the rear wheel tube 20 is rotatably matched with the frame body 10 through the end sleeve 21, and the buckle 31 is provided on the end sleeve 21. Arranging a complex structure on the end sleeve 21 can simplify the structure of the rear wheel tube 20, making the rear wheel tube 20 easier to shape, which is conducive to reducing costs.

[0031] In some optional embodiments, a rotating seat 22 is provided on one side of the end sleeve 21, and the rotating seat 22 is connected to the frame body 10 via a rotating shaft 221. In this embodiment, the rotating shaft 221 is a rotating shaft 221 screw. In addition, the rear wheel tube 20 is rotatably connected to the frame body 10 via the end sleeve 21, which is conducive to simplifying the structure of the rear wheel tube 20.

[0032] In order to prevent the buckle 31 from accidentally colliding with the rear wheel tube 20 due to its protrusion during product packaging, storage, transportation and use, in some optional embodiments, a protective cover 23 arranged around the buckle 31 is provided on the rear wheel tube 20, and the protective cover 23 is helpful for protecting the rear wheel tube 20. In this embodiment, when the rear wheel tube 20 is rotated to the unfolded state, the buckle 31 is limitedly matched with the limiting groove through the limiting ring 32, and then the buckle 31 is rotated in the direction away from the limiting groove into the protective cover 23. When it is necessary to release the locking of the rear wheel tube 20, the buckle 31 is rotated toward the limiting groove, so that the limiting ring 32 can be loosened from the limiting groove, and then the buckle 31 is rotated back into the protective cover 23 again, and the limiting ring 32 is located outside the limiting groove.

[0033] The formation method of the limit groove can be designed according to actual needs. For example, in some optional embodiments, a limit seat 12 is provided on the frame body 10, a limit hook is provided on the limit seat 12, and the limit groove is located on the limit hook. Of course, the formation method of the limit groove is not limited to this, and those skilled in the art can also choose other suitable formation methods according to the teachings of the utility model.

[0034] In some optional embodiments, a positioning groove 24 is provided on the rear wheel tube 20. When the rear wheel tube 20 rotates to the unfolded state, the limiting seat 12 is limitedly matched with the positioning groove 24, thereby improving the stability between the rear wheel tube 20 and the frame body 10, so that the rear wheel tube 20 and the frame body 10 are not easily offset from each other. In addition, the circumferential rotation between the rear wheel tube 20 and the frame body 10 can also be avoided, thereby reducing the torque borne at the rotation connection between the rear wheel tube 20 and the frame body 10, and improving the structural stability. In this embodiment, the positioning groove 24 is provided on the end sleeve 21.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function, characterized in that: include: The frame body and multiple rear wheel tubes; The rear wheel tube is rotatably matched with the frame body, a locking mechanism and a rear wheel are provided on the rear wheel tube, the locking mechanism is movably connected with the rear wheel tube, a plurality of locking matching parts are provided on the frame body, and when the rear wheel tube is rotated to an unfolded state, the locking mechanism and the locking matching parts are correspondingly locked and matched so that the rear wheel tube is locked on the frame body.

2. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function according to claim 1, characterized in that: The locking mechanism comprises a buckle, which is rotatably connected to the rear wheel tube, and the locking fitting portion is a limiting groove, and the buckle is limitedly fitted with the limiting groove after rotation.

3. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function according to claim 2, characterized in that: A limiting ring is rotatably provided on the buckle, and the buckle rotates in a direction approaching or away from the limiting groove. After the buckle is limitedly engaged with the limiting groove through the limiting ring, the buckle rotates in a direction away from the limiting groove, so that the limiting ring cannot be separated from the limiting groove.

4. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function according to claim 2, characterized in that: An end sleeve is provided at the end of the rear wheel tube, the rear wheel tube is rotatably matched with the frame body through the end sleeve, and the buckle is provided on the end sleeve.

5. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function according to claim 4, characterized in that: A rotating seat is arranged on one side of the end sleeve, and the rotating seat is connected to the frame body through a rotating shaft.

6. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function according to claim 2, characterized in that: The rear wheel tube is provided with a protective cover which is arranged around the draw buckle.

7. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function according to any one of claims 2 to 6, characterized in that: A limit seat is arranged on the frame body, a limit hook is arranged on the limit seat, and the limit slot is located on the limit hook.

8. A four-wheeled vehicle with a rear wheel tube outwardly flipping and folding function according to claim 7, characterized in that: The rear wheel tube is provided with a positioning groove, and when the rear wheel tube is rotated to an unfolded state, the limiting seat is limitedly matched with the positioning groove.

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