Foldable frame structure

Abstract

The utility model relates to the technical field of bicycle frame structures, in particular to a foldable bicycle frame structure which comprises a first bicycle frame upper pipe, a front bicycle frame pipe is arranged at the front end of the first bicycle frame upper pipe, a front fork is arranged at the bottom of the front bicycle frame pipe, the front end of the first bicycle frame upper pipe is connected with a second bicycle frame upper pipe through a folder, and the front fork is arranged at the bottom of the second bicycle frame upper pipe. A front fork is installed in the second bicycle frame upper pipe in a penetrating mode. The foldable frame structure can be used as an electric vehicle frame and can also be used as a bicycle frame, a second wrench is wrenched upwards, when the second wrench is wrenched upwards, a rotating rod and an eccentric wheel can be driven to rotate, and when the eccentric wheel rotates, an inserting rod can slide out of an inserting hole through the elastic force of a second spring; at the moment, the second frame upper pipe and the frame front pipe can be overturned and folded through the rotating shaft, the foldable frame structure is convenient to operate when folded, the space occupancy rate after folding is smaller, and the safety of the frame can be improved through rotating folding.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of frame structure, concretely is a foldable frame structure. BACKGROUND

[0002] Frame structure is one of important parts of electric vehicle and bicycle, and frame structure relates to the safety factor of electric vehicle and bicycle whole vehicle and the structure of car body, and the structural design of frame fully considers bearing and strength, and regular manufacturers will carry out strict test, simulate road state travel, ensure that still can maintain stability under the condition of increasing load and shock source;

[0003] The existing foldable frame structure is usually divided into integral frame and folding frame, and the folding frame is usually applied to small vehicles, the frame arrangement is relatively compact, and the frame is usually composed of front frame, handrail, lifting seat cushion and rear frame and other parts, and the frame is usually operated by the folder when folding, and the folder on the traditional foldable frame structure is usually installed at the middle position of the frame, and the frame is folded by opening the folder from the middle, and the space occupation after folding in the middle of the frame is relatively large, and the foldable frame structure has certain safety hazards when the weight of the passengers is gathered at the folding place during use. UTILITY MODEL CONTENTS

[0004] The utility model discloses a foldable frame structure, to solve the problem that the existing foldable frame structure on the market has many defects, and the space occupation is large after folding, and the weight is concentrated at the folding place when riding, and there is a safety hazard.

[0005] To achieve the above object, the utility model provides the following technical scheme: a foldable frame structure, which comprises: a first upper frame pipe, a front pipe is arranged at the front end of the first upper frame pipe, and a front fork is arranged at the bottom of the front pipe;

[0006] The first upper frame pipe is connected with a second upper frame pipe through a folder at the front end, the second upper frame pipe is internally penetrated and installed with the front fork, and the top of the front fork is connected with the bottom end of the front pipe through the folder;

[0007] The folder comprises a connecting frame, the connecting frame is respectively installed at one end of the first upper frame pipe and the bottom end of the front pipe, the end part of the first upper frame pipe and the front pipe close to the connecting frame is provided with a butt joint groove, a sliding hole is penetrated and arranged between the butt joint groove and the connecting frame, and the surface close to the sliding hole of the connecting frame is fixedly connected with the top end of a second spring.

[0008] As one preferred scheme of the utility model, the inside of the sliding hole is movably connected with an inserting rod, the end of spring two is connected on the surface of the inserting rod, the upper tube two of the frame is rotatably connected with a rotating shaft between the upper tube one of the frame and the frame, the front tube of the frame is rotatably connected with a rotating shaft between the front fork, the side surface of the upper tube two of the frame and the top of the front fork are all provided with a recess.

[0009] As one preferred scheme of the utility model, the recess inner wall is rotatably connected with a rotating rod, the end of the rotating rod is fixedly connected with a wrench two, the surface of the rotating rod close to the recess is fixedly connected with an eccentric wheel.

[0010] As one preferred scheme of the utility model, the side surface of the upper tube two of the frame and the top of the front fork are all fixedly connected with a butt joint block, the butt joint block is movably connected in the butt joint groove, the surface of the butt joint block is provided with an inserting hole.

[0011] Compared with the prior art, the utility model has the advantages that the foldable frame structure can be used as the frame of an electric vehicle and the frame of a bicycle, the wrench two is pulled upward, the wrench two can drive the rotating rod and the eccentric wheel to rotate when the wrench two is pulled upward, the inserting rod can slide out of the inside of the inserting hole through the elastic force of spring two when the eccentric wheel rotates, the upper tube two of the frame and the front tube of the frame can be turned and folded through the rotating shaft at this time, the foldable frame structure is convenient to operate when folding, the space occupancy is smaller after folding, and the rotation and folding can improve the safety of the frame. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0013] Figure 2 It is a three-dimensional structure schematic view of the utility model from perspective one of the folder;

[0014] Figure 3 It is a three-dimensional structure schematic view of the utility model from perspective two of the folder;

[0015] Figure 4 It is the utility model Figure 2 It is an enlarged structure schematic view of part A.

[0016] In the drawing: 1, upper tube one of the frame; 101, upper tube two of the frame; 2, front tube of the frame; 3, front fork; 4, folder; 41, connecting frame; 42, butt joint groove; 43, sliding hole; 44, spring two; 45, inserting rod; 46, rotating shaft; 47, recess; 48, rotating rod; 49, wrench two; 410, eccentric wheel; 411, butt joint block; 412, inserting hole. PREFERRED EMBODIMENT

[0017] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Please refer to Figures 1-3 The present application provides an embodiment: a foldable frame structure, comprising: a frame upper tube one 1, the front end of the frame upper tube one 1 is provided with a frame front tube 2, the bottom of the frame front tube 2 is provided with a front fork 3;

[0019] The front end of the frame upper tube one 1 is connected with a frame upper tube two 101 through a folder 4, the frame upper tube two 101 is internally installed through the front fork 3, and the top of the front fork 3 is connected with the bottom end of the frame front tube 2 through the folder 4.

[0020] It should be noted that when the foldable frame structure is not used, it needs to be folded, first, the folder 4 connected between the front fork 3 and the frame front tube 2 is operated, the folder 4 is operated, and then the folder 4 connected between the frame upper tube one 1 and the frame upper tube two 101 is operated, the folder 4 is operated, and then the frame upper tube two 101 is folded.

[0021] As Figures 1-4 The folder 4, comprising: a connecting frame 41, the connecting frame 41 is installed at one end of the frame upper tube one 1 and the bottom end of the frame front tube 2 respectively, the end part of the frame upper tube one 1 and the frame front tube 2 close to the connecting frame 41 is provided with a butt joint groove 42, the butt joint groove 42 and the connecting frame 41 are provided with a sliding hole 43 through, the surface of the connecting frame 41 close to the sliding hole 43 is fixedly connected with the top end of a spring two 44, the inside of the sliding hole 43 is movably connected with a plug rod 45, the end of the spring two 44 is connected to the surface of the plug rod 45, the frame upper tube two 101 and the frame front tube 2 are rotatably connected with a rotating shaft 46, the frame front tube 2 and the front fork 3 are rotatably connected with the rotating shaft 46, the side surface of the frame upper tube two 101 and the top of the front fork 3 are provided with a recess 47, the inner wall of the recess 47 is rotatably connected with a rotating rod 48, the end part of the rotating rod 48 is fixedly connected with a wrench two 49, the surface of the rotating rod 48 close to the recess 47 is fixedly connected with an eccentric wheel 410, the side surface of the frame upper tube two 101 and the top of the front fork 3 are fixedly connected with a butt joint block 411, the butt joint block 411 is movably connected in the butt joint groove 42, the surface of the butt joint block 411 is provided with a plug hole 412;

[0022] It is worth noting that when the second upper frame tube 101 and the front frame tube 2 need to be folded, the wrench 49 can be pulled, and when the wrench 49 is pulled, the rotating rod 48 can be rotated, and when the rotating rod 48 is rotated, the eccentric wheel 410 can be rotated, and when the eccentric wheel 410 is rotated, the plug rod 45 can be moved by the spring 44. The surface of the eccentric wheel 410 is adhered to move, and when the plug rod 45 moves, it can slide in the sliding hole 43 and the plug hole 412, and when the plug rod 45 slides out of the plug hole 412, it can be pulled respectively. The second upper frame tube 101 and the front frame tube 2 can be pulled, and when the second upper frame tube 101 and the front frame tube 2 are pulled, they can be turned over by the rotating shaft 46, and when the second upper frame tube 101 and the front frame tube 2 are turned over, the abutting block 411 can be pulled out of the abutting groove 42. When the second upper frame tube 101 and the front frame tube 2 are turned to a specified angle, they can be folded.

[0023] Working principle: as Figures 1-4 shown, when folding the foldable frame structure, first pull the wrench 49 upwards, and when the wrench 49 is pulled upwards, the rotating rod 48 and the eccentric wheel 410 can be rotated, and when the eccentric wheel 410 is rotated, the plug rod 45 can be slid out of the plug hole 412 by the spring 44. At this time, the rotating shaft 46 can be used to turn over and fold the second upper frame tube 101 and the front frame tube 2, and after the second upper frame tube 101, the front frame tube 2 and the front fork 3 are folded and turned over, the space occupation rate is smaller, and the rotation and folding can improve the safety of the frame and the structure is more stable.

[0024] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A foldable frame structure comprising: The front end of the upper frame pipe one (1) is provided with a front frame pipe (2), and the bottom of the front frame pipe (2) is provided with a front fork (3), characterized in that: The front end of the upper frame pipe one (1) is connected with the upper frame pipe two (101) through the folder (4), the inside of the upper frame pipe two (101) is provided with the front fork (3), and the top of the front fork (3) is connected with the bottom end of the front frame pipe (2) through the folder (4). The folder (4) comprises a connecting frame (41), the connecting frame (41) is installed at one end of the upper frame pipe one (1) and the bottom end of the front frame pipe (2), the end of the upper frame pipe one (1) and the front frame pipe (2) close to the connecting frame (41) is provided with a butt joint groove (42), a sliding hole (43) is provided between the butt joint groove (42) and the connecting frame (41), and the surface of the connecting frame (41) close to the sliding hole (43) is fixedly connected with the top end of a second spring (44).

2. A foldable frame structure according to claim 1, wherein: The inside of the sliding hole (43) is movably connected with a plug rod (45), the tail end of the second spring (44) is connected to the surface of the plug rod (45), the upper frame pipe one (1) and the upper frame pipe two (101) are rotatably connected with a rotating shaft (46), the front frame pipe (2) and the front fork (3) are rotatably connected with the rotating shaft (46), and the side surface of the upper frame pipe two (101) and the top of the front fork (3) are provided with recesses (47).

3. A foldable frame structure according to claim 2, wherein: The recess (47) is rotatably connected with a rotating rod (48), the end of the rotating rod (48) is fixedly connected with a wrench (49), and the surface of the rotating rod (48) close to the recess (47) is fixedly connected with an eccentric wheel (410).

4. A foldable frame structure according to claim 3, wherein: The side surface of the upper frame pipe two (101) and the top of the front fork (3) are fixedly connected with butt joint blocks (411), the butt joint blocks (411) are movably connected to the butt joint groove (42), and the surface of the butt joint blocks (411) is provided with a plug hole (412).

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