Multifunctional push-pull folding frame

Abstract

A multifunctional push-pull folding frame is provided with a bottom frame, front wheels and rear wheels, the bottom frame is provided with a bottom box, the two sides of the top of the bottom box are respectively provided with a front sleeve and a rear sleeve rod, and the rear sleeve rod is telescopically inserted and fixed into the front sleeve; the front wheel is installed at the bottom end of the steering shaft through a front fork, and the steering shaft is installed in the steering sleeve in a relatively rotating mode. The front ends of the front casing pipes are connected with front connecting arms respectively, and the tops of the front connecting arms are fixedly connected to the outer wall of the steering sleeve respectively. The rear wheel is provided with a rear wheel shaft, the rear wheel shaft can be installed on the rear box in a relatively rotating mode, and the rear end of the rear sleeve rod is fixedly connected to the outer wall of the rear box. The front and rear sleeve push-pull telescopic structure is more convenient to ride, firmer and more durable, can be large and small, and is more free. The structure is smaller in storage size, and is more practical and convenient to carry when people go out and the like.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, and in particular to a frame of a multifunctional, pushable, and foldable two-wheeled or three-wheeled vehicle used for scenes such as designated driving, the elderly, traveling, and mobile stalls. Background Art

[0002] In daily life, two-wheeled or three-wheeled vehicles are widely used. Generally speaking, designated driver vehicles, elderly vehicles, travel vehicles, mobile stall vehicles, etc. have their own characteristics and are generally not universal. For some vehicles, they have a certain degree of folding function, which can reduce the storage volume and make them easier to carry. However, for most people, it is unrealistic to own various types of vehicles to meet the needs of different situations, and the cost of ownership and use is high. Utility Model Content

[0003] In view of the above situation, in order to solve the problems existing in the above technology, the utility model proposes a multifunctional push-pull folding frame, which is provided with a base frame, a front wheel and a rear wheel, the base frame is provided with a bottom box, and a group of front sleeves and rear sleeve rods are respectively provided on both sides of the top of the bottom box, and the rear sleeve rods can be telescopically inserted and fixed in the front sleeve; the front wheel is installed at the bottom end of the steering shaft through a front fork, and the steering shaft can be relatively rotatably installed in the steering sleeve; the front ends of the front sleeves are respectively connected to front connecting arms, and the tops of the front connecting arms are respectively fixedly connected to the outer walls of the steering sleeves; the rear wheels are provided with a rear wheel axle, and the rear wheel axle can be relatively rotatably installed on the rear box, and the rear end of the rear sleeve rod is fixedly connected to the outer wall of the rear box.

[0004] According to a multifunctional push-pull folding frame of the present application, a plurality of limiting tubes are further provided in the bottom box, and a plurality of reinforcing sleeve rods composed of steel bars or steel pipes for strengthening the rigidity of the overall structure are connected to the rear box, and the reinforcing sleeve rods are respectively inserted and connected in the limiting tubes.

[0005] A multifunctional push-pull folding frame according to the present application is also provided with a front bracket, and a front connecting column is provided at the bottom end of the front bracket; a front vertical tube is provided at the front end of the front sleeve, and the front connecting column is inserted and installed in the front vertical tube.

[0006] According to a multifunctional push-pull folding frame of the present application, the front bracket is also provided with a front column, and the front column is connected to the front connecting column; a front frame rod is connected to the top end of the front column through a front hinge, and a front frame platform is connected to the front frame rod.

[0007] According to a multifunctional push-pull folding frame of the present application, a front support rod is relatively rotatably connected to the front column, a positioning notch is provided on the front frame rod, and the top end of the front support rod is embedded and installed in the positioning notch.

[0008] A multifunctional push-pull folding frame according to the present application is also provided with a front connecting rod, the bottom end of which is connected to the front connecting column via a front gear folder, and the front column is fixedly connected to the front connecting rod.

[0009] A multifunctional push-pull folding frame according to the present application is also provided with a rear bracket, the bottom end of which is provided with a rear connecting column; a rear vertical tube is provided on the top of the rear box, and the rear connecting column is inserted and installed in the rear vertical tube.

[0010] According to a multifunctional push-pull folding frame of the present application, the rear bracket also includes a rear connecting rod and a rear flip rod, the rear flip rod is relatively rotatably connected to the rear end of the front sleeve through a rotating shaft, the rear connecting rod is connected to the top end of the rear flip rod through a first rear hinge, and the top end of the rear connecting column is connected to the other end of the rear connecting rod through a second rear hinge; a seat plate is connected to the top of the rear connecting rod.

[0011] According to a multifunctional push-pull folding frame of the present application, the rear connecting column, the rear connecting rod and the rear flip rod are arranged in two groups in parallel, and the tops of the two groups of rear connecting columns and rear flip rods are fixedly connected by rear cross bars; rear vertical tubes are respectively provided on both sides of the top of the rear box, and the rear connecting columns on each side are respectively inserted and installed in the rear vertical tubes on the corresponding side.

[0012] According to a multifunctional push-pull folding frame of the present application, the top end of the rear connecting column is also connected to a backrest rod through a backrest gear folding device, and the top of the backrest rod is connected to a backrest.

[0013] According to the multifunctional push-pull folding frame of the present application, a front auxiliary wheel that can be adjusted up and down is also connected to the lower part of the front end of the front sleeve.

[0014] According to a multifunctional push-pull folding frame of the present application, a steering shaft folding device is provided in the middle of the steering shaft, and a foldable handle is provided on the top of the steering shaft.

[0015] After adopting the technology proposed by the utility model, the multifunctional push-pull folding frame according to the embodiment of the utility model has the following beneficial effects.

[0016] 1) The front and rear sleeve push-pull telescopic structure is adopted. This structure is more convenient for riding, more durable, and can be larger or smaller, more at will. This structure has a smaller storage volume and is more practical and convenient for travel.

[0017] 2) The bottom of the push-pull structure adopts multiple steel bars or steel pipes, and the push-pull hidden structure occupies a small space, so that the space under the seat and the frame riding and unfolding is fully utilized, adding multi-functional sub-items.

[0018] 3) Small risers with sleeves are added to the front and rear of the frame to position and support the front and rear brackets, making them easy to disassemble and carry.

[0019] 4) The front bracket adopts double folding and gear folding functions, retaining the function of placing boxes and baskets; unfolding the double folding adds a small platform, which is convenient for placing items, selling goods, elderly people playing cards, placing tea cups, etc.

[0020] 5) The frame seat structure adopts a two-combination structure of positioning folding and sleeve positioning folding. It is convenient to store, ride and fold, and is sturdy, durable and practical, which is conducive to increasing the space utilization rate of the vehicle.

[0021] 6) The backrest at the rear end of the frame has a gear control, which is convenient and comfortable to use. The backrest bracket can be laid flat to transport boxes, suitcases or goods. The front bracket and backrest bracket can be adjusted through the gear balance to place flat plates or bamboo curtains, and can be used to set up stalls to sell goods.

[0022] 7) The front auxiliary wheel can be adjusted up and down, making it possible to push and pull small four-wheeled boxes, cargo suitcases, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The multifunctional push-pull folding frame according to the embodiment of the present application is described by taking a tricycle as an example. In order to fully express the frame structure, the right part of the dotted line in the figure is a cutaway view, in which the filled section line part is a transverse structure connecting the left and right sides.

[0024] In the figure,

[0025] Base frame 1

[0026] Bottom box 10

[0027] Front casing 11

[0028] Front connecting arm 111

[0029] Front riser 114

[0030] Rear rod 12

[0031] Enhanced sleeve rod 13

[0032] Front wheel 2

[0033] Steering shaft 20

[0034] Steering shaft folding device 201

[0035] Handle 202

[0036] Front fork 21

[0037] Steering sleeve 22

[0038] Rear wheel 3

[0039] Rear axle 30

[0040] Rear box 31

[0041] Rear riser 315

[0042] Front bracket 4

[0043] Front connecting column 41

[0044] Front column 42

[0045] Front hinge 43

[0046] Front rack 44

[0047] Positioning notch 441

[0048] Front platform 45

[0049] Front support rod 46

[0050] Front connecting rod 47

[0051] Front gear folding device 48

[0052] Rear bracket 5

[0053] Rear connecting column 51

[0054] Rear connecting rod 52

[0055] Rear flip bar 53

[0056] First rear hinge 54

[0057] Second rear hinge 55

[0058] Seat board 56

[0059] Rear crossbar 57

[0060] Backrest 60

[0061] Backrest rod 61

[0062] Backrest gear folding device 62

[0063] Front training wheel 7 DETAILED DESCRIPTION

[0064] The various preferred embodiments of the utility model will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in the understanding of the exemplary embodiments of the utility model as defined by the claims and their equivalents. It includes various specific details to assist in understanding, but they can only be regarded as exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the utility model. Moreover, in order to make the description clearer and more concise, detailed descriptions of functions and structures well known in the art will be omitted.

[0065] like Figure 1 As shown, a multifunctional push-pull folding frame is provided with a base frame 1, a front wheel 2 and a rear wheel 3. The base frame 1 is provided with a bottom box 10, and a group of front sleeves 11 and rear sleeve rods 12 are respectively provided on both sides of the top of the bottom box 10, and the rear sleeve rods 12 are telescopically inserted and fixed in the front sleeve 11; the front wheel 2 is installed at the bottom end of the steering shaft 20 through a front fork 21, and the steering shaft 20 is relatively rotatably installed in the steering sleeve 22; the front ends of the front sleeves 11 are respectively connected to front connecting arms 111, and the tops of the front connecting arms 111 are respectively fixedly connected to the outer walls of the steering sleeve 22; the rear wheel 3 is provided with a rear wheel axle 30, and the rear wheel axle 30 is relatively rotatably installed on the rear box 31, and the rear end of the rear sleeve rod 12 is fixedly connected to the outer wall of the rear box 31.

[0066] The bottom box 10 is also provided with a plurality of position limiting tubes. The rear box 31 is connected with a plurality of reinforcing sleeve rods 13 made of steel bars or steel pipes for strengthening the rigidity of the overall structure. The reinforcing sleeve rods 13 are respectively inserted and connected to the position limiting tubes.

[0067] A front bracket 4 is also provided, and a front connecting column 41 is provided at the bottom end of the front bracket 4 ; a front vertical pipe 114 is provided at the front end of the front sleeve 11 , and the front connecting column 41 is inserted and installed in the front vertical pipe 114 .

[0068] The front support 4 is further provided with a front column 42 , and the front column 42 is connected to the front connecting column 41 ; the top end of the front column 42 is connected to a front frame rod 44 via a front hinge 43 , and a front frame platform 45 is connected to the front frame rod 44 .

[0069] The front support rod 46 is connected and rotatably arranged on the front column 42 . The front support rod 44 is provided with a positioning notch 441 . The top end of the front support rod 46 is embedded and installed in the positioning notch 441 .

[0070] A front connecting rod 47 is also provided, the bottom end of which is connected to the front connecting column 41 via a front gear folder 48 , and the front column 42 is fixedly connected to the front connecting rod 47 .

[0071] A rear bracket 5 is also provided, and a rear connecting column 51 is provided at the bottom end of the rear bracket 5 ; a rear vertical pipe 315 is provided at the top of the rear box 31 , and the rear connecting column 51 is inserted and installed in the rear vertical pipe 315 .

[0072] The rear bracket 5 also includes a rear connecting rod 52 and a rear flip rod 53. The rear flip rod 53 is relatively rotatably connected to the rear end of the front sleeve 11 through a rotating shaft. The rear connecting rod 52 is connected to the top end of the rear flip rod 53 through a first rear hinge 54, and the top end of the rear connecting column 51 is connected to the other end of the rear connecting rod 52 through a second rear hinge 55. A seat plate 56 is connected above the rear connecting rod 52.

[0073] The rear connecting column 51, the rear connecting rod 52 and the rear flip rod 53 are arranged in two groups in parallel, and the tops of the two groups of rear connecting columns 51 and rear flip rods 53 are fixedly connected by rear cross bars 57; rear vertical pipes 315 are respectively provided on both sides of the top of the rear box 31, and the rear connecting columns 51 on each side are respectively inserted and installed in the rear vertical pipes 315 on the corresponding side.

[0074] The top end of the rear connecting column 51 is also connected to a backrest rod 61 through a backrest gear folding device 62 , and the top of the backrest rod 61 is connected to a backrest 60 .

[0075] The lower part of the front end of the front sleeve 11 is also connected to a front auxiliary wheel 7 which can be adjusted up and down.

[0076] A steering shaft folding device 201 is provided in the middle of the steering shaft 20 , and a foldable handle 202 is provided on the top of the steering shaft 20 .

[0077] According to a multifunctional push-pull folding frame of the present application, other structures not explicitly specified in the present application, such as tires, axles, power mechanisms, brake systems, etc., as well as structural details not explicitly specified, can adopt the structures or devices of various existing two-wheeled or three-wheeled vehicles and can be combined with the technical solution of the present application in a conventional design.

[0078] According to the multifunctional push-pull folding frame of the present application, the front sleeve 11 and the rear sleeve rod 12 and other sleeve structures can adopt a pin to limit the axial position as needed, for example, holes that pass through the inner and outer sleeves are provided, and after being extended to a predetermined position, the positions of the inner and outer sleeves can be limited by inserting pins or screws into the corresponding holes so that they no longer extend or move. Of course, other feasible telescopic rod control technical means can also be adopted.

[0079] According to a multifunctional push-pull folding frame of the present application, the front connecting column 41, the front column 42, the front hinge 43, the front frame rod 44, the front support rod 46, the front connecting rod 47 and the front gear folder 48 are symmetrically arranged with the front wheel as the center, and the front frame platform 45 is fixed above the two parallel front frame rods 44. The front gear folder 48 can adopt the existing gear folding device, including the scheme with gear folding function used in folding bicycles, folding wheelchairs, etc., as long as it can be freely flipped and folded, and the folding position can be fixed at multiple different folding angles, that is, the gear position. The backrest gear folder 62 is similar.

[0080] According to the multifunctional push-pull folding frame of the present application, the front auxiliary wheel 7 that can be adjusted up and down can adopt the up and down adjustment function technology in the prior art; the middle of the steering shaft 20 is provided with a steering shaft folding device 201, and the top of the steering shaft 20 is provided with a foldable handle 202, which can adopt the folding technology of the folding bicycle in the prior art. This application will not repeat it.

[0081] According to the application, a multifunctional push-pull folding frame adopts a front and rear sleeve push-pull telescopic structure, which is more convenient for riding, more durable, and can be larger or smaller, more flexible. This structure has a smaller storage volume and is more practical and convenient for travel.

[0082] The bottom of the push-pull structure uses multiple steel bars or steel pipes. The push-pull hidden structure takes up little space, so that the space under the seat for riding and unfolding the frame is fully utilized, adding multi-functional items.

[0083] Small risers of sleeves are added to the front and rear of the frame to position and support the front and rear brackets, making them easy to disassemble and carry.

[0084] The front bracket adopts double folding and gear folding functions, retaining the function of placing boxes and baskets; unfolding the double folding adds a small platform, which is convenient for placing items, selling goods, elderly people playing cards, placing tea cups, etc.

[0085] The frame seat structure adopts a two-combination structure of positioning folding and sleeve positioning folding. It is convenient to store, ride and fold, and is sturdy, durable and practical, which is conducive to increasing the space utilization rate of the vehicle.

[0086] The backrest at the rear end of the frame has a gear control, which is convenient and comfortable to use. The backrest bracket can be laid flat to transport boxes, suitcases or goods. The front bracket and backrest bracket can be adjusted through the gear balance to place flat panels or bamboo curtains, and can be used to set up stalls to sell goods.

[0087] The front auxiliary wheel can be adjusted up and down, making it possible to push and pull small four-wheeled boxes, cargo suitcases, etc.

[0088] The utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

[0089] Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented. Of course, the above-listed situations are only examples, and the present invention is not limited thereto. Those skilled in the art should understand that other variations or simplifications according to the technical solution of the present invention can be appropriately applied to the present invention and should be included in the scope of the present invention.

Claims

1. A multifunctional push-pull folding frame, characterized in that: The invention relates to a vehicle having a chassis (1), a front wheel (2) and a rear wheel (3). The chassis (1) is provided with a bottom box (10). A group of front sleeves (11) and rear sleeve rods (12) are respectively provided on both sides of the top of the bottom box (10). The rear sleeve rods (12) are telescopically inserted and fixed in the front sleeve (11). The front wheel (2) is installed at the bottom end of a steering shaft (20) through a front fork (21). The steering shaft (20) is relatively rotatably installed in a steering sleeve (22). The front ends of the front sleeves (11) are respectively connected to front connecting arms (111). The tops of the front connecting arms (111) are respectively fixedly connected to the outer wall of the steering sleeve (22). The rear wheel (3) is provided with a rear wheel shaft (30). The rear wheel shaft (30) is relatively rotatably installed on the rear box (31). The rear end of the rear sleeve rod (12) is fixedly connected to the outer wall of the rear box (31).

2. A multifunctional push-pull folding frame according to claim 1, characterized in that: The bottom box (10) is also provided with a plurality of position limiting tubes. The rear box (31) is connected with a plurality of reinforcing sleeve rods (13) made of steel bars or steel pipes for strengthening the rigidity of the overall structure. The reinforcing sleeve rods (13) are respectively inserted and connected to the position limiting tubes.

3. The multifunctional push-pull folding frame according to claim 1, characterized in that: A front bracket (4) is also provided, and a front connecting column (41) is provided at the bottom end of the front bracket (4); a front vertical pipe (114) is provided at the front end of the front sleeve (11), and the front connecting column (41) is inserted and installed in the front vertical pipe (114).

4. A multifunctional push-pull folding frame according to claim 3, characterized in that: The front bracket (4) is also provided with a front column (42), and the front column (42) is connected to the front connecting column (41); the top end of the front column (42) is connected to a front frame rod (44) through a front hinge (43), and a front frame platform (45) is connected to the front frame rod (44); a front connecting rod (47) is also provided, and the bottom end of the front connecting rod (47) is connected to the front connecting column (41) through a front gear folder (48), and the front column (42) is fixedly connected to the front connecting rod (47).

5. The multifunctional push-pull folding frame according to claim 4, characterized in that: The front support rod (46) is relatively rotatably connected to the front column (42), and a positioning notch (441) is provided on the front frame rod (44). The top end of the front support rod (46) is embedded in the positioning notch (441).

6. The multifunctional push-pull folding frame according to claim 1, characterized in that: A rear bracket (5) is also provided, and a rear connecting column (51) is provided at the bottom end of the rear bracket (5); a rear vertical pipe (315) is provided at the top of the rear box (31), and the rear connecting column (51) is inserted and installed in the rear vertical pipe (315).

7. The multifunctional push-pull folding frame according to claim 6, characterized in that: The rear bracket (5) further comprises a rear connecting rod (52) and a rear flip rod (53); the rear flip rod (53) is relatively rotatably connected to the rear end of the front sleeve (11) via a rotating shaft; the rear connecting rod (52) is connected to the top end of the rear flip rod (53) via a first rear hinge (54); the top end of the rear connecting column (51) is connected to the other end of the rear connecting rod (52) via a second rear hinge (55); a seat plate (56) is connected to the top of the rear connecting rod (52).

8. The multifunctional push-pull folding frame according to claim 7, characterized in that: The rear connecting column (51), the rear connecting rod (52) and the rear flip rod (53) are arranged in parallel in two groups, and the tops of the two groups of rear connecting columns (51) and rear flip rods (53) are fixedly connected by rear cross bars (57); rear vertical pipes (315) are respectively arranged on both sides of the top of the rear box (31), and the rear connecting column (51) on each side is respectively inserted into the rear vertical pipe (315) on the corresponding side.

9. The multifunctional push-pull folding frame according to claim 6, characterized in that: The top end of the rear connecting column (51) is also connected to a backrest rod (61) via a backrest gear folding device (62), and the top of the backrest rod (61) is connected to a backrest (60).

10. The multifunctional push-pull folding frame according to claim 1, characterized in that: A front auxiliary wheel (7) which can be adjusted up and down is also connected and arranged below the front end of the front sleeve (11).

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