CN102632954B - Folding device for bicycle or electric vehicle - Google Patents

Abstract

The invention discloses a folding device for a bicycle or an electric vehicle. The folding device comprises a rotating shaft and a locking fixing device, wherein the rotating shaft comprises a rotating shaft center and a rotating shaft sleeve used for containing the rotating shaft center, wherein the upper end of the rotating shaft center is fixedly connected with a triangular cross beam arranged in front of a frame; the lower end of the rotating shaft sleeve is connected with a chain wheel seat or a motor seat; the locking fixing device is arranged on a middle pipe passing through the triangular cross beam arranged in front of the frame; and the locking device can be used for locking and fixing when the folding device is opened, so that the riding safety can be guaranteed. The folding device is convenient to assemble and maintain and easy to fold, and saves the space.

Description

A folding device for bicycle or electric vehicle

technical field

The invention relates to a folding device for bicycles or electric vehicles, in particular to a folding device that is easy to fold, assemble and maintain.

Background technique

In modern society, electric vehicles have become one of the first choices of people's means of transportation. However, due to the large footprint and limited storage space for electric vehicles, many electric vehicles are crowded together, making access inconvenient. Ordinary electric vehicles cannot be folded, which is not only difficult to move up and down, but also takes up a lot of space when placed at home. Parking in corridors takes up space and is easy to lose. Many folding bikes have appeared now, and the used folding devices are complicated. When assembling, the folding joints must be installed first, and then the handle is installed. The installation process is loaded down with trivial details and is not easy to install. In addition, when repairing a folding bicycle with an ordinary folding device, many special wrenches are required to remove the joints, which is not easy to remove. What's more, the common folding device has a lot of attached parts, which is laborious and time-consuming to install.

Contents of the invention

Aiming at the defects and deficiencies in the prior art, the present invention proposes a folding device for bicycles or electric vehicles, especially relates to a folding device using a rotating shaft method.

To achieve the above object, the present invention adopts the following technical solutions:

A folding device for bicycles or electric vehicles, comprising a rotating shaft and a locking and fixing device, the rotating shaft includes a rotating shaft axis and a rotating shaft sleeve capable of accommodating the rotating shaft axis; the upper end of the rotating shaft axis is fixed to the crossbeam of the front triangle of the vehicle frame Connection, the lower end of the rotating shaft sleeve is connected with the sprocket seat or the motor seat; the locking and fixing device is installed on the middle tube that runs through the front triangular beam of the vehicle frame.

Further, the locking and fixing device includes a pair of locking nut seats with screw holes in the center, one of the pair of locking nut seats is fixed on the lower end of the upper middle tube 31, and the other is fixed on the lower end of the lower middle tube 32. The upper end is screwed into the screw hole with a screw to fix the locking nut seat together.

Further, the folding device also includes a spring, a spring buckle, a safety buckle base, and a safety buckle;

One end of the spring is installed in the shaft wall, the other end is connected to the spring buckle, and a hole A corresponding to the spring buckle is provided on the shaft wall corresponding to the horizontal axis of the spring buckle;

The safety buckle base is arranged on the outer wall of the shaft casing, the safety buckle is snapped on the safety buckle base, and forms a hole B with the safety buckle base, and the hole B corresponds to the hole A.

Further, the base of the safety buckle is provided with a slot, and the safety buckle moves up and down along the slot.

Further, a bearing may be installed on the axis of the rotating shaft, and a bearing may also be installed in the casing of the rotating shaft.

The advantages of the present invention are: (1) Easy to assemble. When assembling an ordinary folding car, the folding joint needs to be installed first, and then the handle is installed. Lock the fixing device and fix it. (2) Maintenance is convenient. It is difficult to disassemble the joints of ordinary folding bikes and requires many kinds of special wrenches. The present invention only needs one wrench to fully open each part of the electric bike, which is easy to disassemble and install. (3) Easy to fold and save space. The folding bike of the present invention is the same as other common folding bikes, but the biggest advantage is that the folding is realized by means of a rotating shaft, which saves labor and time when folding.

Description of drawings

Fig. 1 is an embodiment of the present invention, that is, a schematic view before folding of an electric vehicle using the folding device of the present invention;

Fig. 2 is an embodiment of the present invention, that is, a perspective view before folding of the electric vehicle applying the folding device of the present invention;

Fig. 3 is an embodiment of the present invention, that is, a side view before folding of the electric vehicle applying the folding device of the present invention;

Fig. 4 is an embodiment of the present invention, that is, an effect diagram after folding the electric vehicle using the folding device of the present invention;

Fig. 5 is an exploded view of an embodiment of the present invention, that is, an electric vehicle using the folding device of the present invention;

Fig. 6 is a side view of 8 in Fig. 5;

Fig. 7 is another embodiment of the present invention, that is, an exploded view of an electric vehicle applying the folding device of the present invention;

Fig. 8 is a schematic structural diagram of another embodiment of the present invention;

Fig. 9 is a schematic structural diagram of another embodiment of the present invention;

Fig. 10 is another embodiment of the present invention, that is, an effect diagram of an electric vehicle after folding using the folding device of the present invention;

Fig. 11 is a schematic diagram of the structure of A-A in Fig. 10, that is, a schematic diagram of the structure when the spring buckle is separated from the shaft sleeve;

Fig. 12 is a schematic diagram of another structure of A-A in Fig. 10, that is, a schematic diagram of the structure when the spring buckle is engaged with the shaft sleeve;

Fig. 13 is a reference schematic diagram of another embodiment of the present invention;

Fig. 14 is a reference schematic diagram when the snap buckle is separated from the rotating shaft sleeve;

Fig. 15 is a reference schematic view of the engagement of the spring buckle with the sleeve of the rotating shaft.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Fig. 1 is a schematic diagram before folding of an embodiment of an electric vehicle applying the folding device of the present invention; Fig. 2 is a perspective view before folding of the electric vehicle applying the folding device of the present invention; Fig. 5 is an exploded view of the electric vehicle of this embodiment; Fig. 6 is a side view of 8 in FIG. 5 . As shown in FIGS. 1 , 2 , 5 and 6 , the present invention provides a folding device for an electric vehicle, which includes a rotating shaft 1 and a locking and fixing device 2 . The rotating shaft includes a rotating shaft axis 7 and a rotating shaft sleeve 13 capable of accommodating the rotating shaft axis. The front fork 8 is rotatably connected with the crossbeam 4 of the front triangle of the frame through the head pipe 5, the upper end of the rotating shaft 1 is fixedly connected with the crossbeam 4 of the front triangle of the frame, the lower end of the rotating shaft sleeve 13 is connected with the motor base 17, and the middle pipe 3 runs through the The crossbeam 4 of the front triangle of the vehicle frame is equipped with an electric vehicle seat (not shown in the figure) at its upper end, and the lower end, that is, the lower end of the upper middle pipe 31 is connected with the locking fixture 2 to be described below, and the lower front end of the rear triangle of the vehicle frame Connect with motor base 17.

As shown in Figure 5, the locking and fixing device 2 of this embodiment includes a pair of locking nut seats 21, 22 with screw holes in the center, wherein one locking nut seat 21 is installed on the lower end of the upper middle tube 31, and the other is locked The nut seat 22 is installed on the upper end of the lower middle pipe 32 . Wherein, the lower middle pipe 32 is located at the middle part of the rear triangle of the vehicle frame. When the locking and fixing device fixed the folding device on the electric vehicle, the screw 24 was screwed into the screw holes of a pair of locking nut seats 21, 22 to fix it together, so as to play the effect of locking and fixing.

As shown in Figure 5, the rotating shaft axis 7 can be equipped with a bearing 71, and the bearing 71 can include No. 6 bowl 9, washer 10, steel ball 11, and lower bowl 12; Including upper bowl 14, steel ball 11, No. 3 bowl 15, gasket 10, and No. 1 bowl 16; insert the shaft core 7 with bearings into the shaft sleeve 13 with bearings, and the shaft sleeve can be flexible around the shaft axis 7 turn. The state of the electric vehicle of the present invention before folding is shown in FIG. 3 . When folding is required, the screw-fixed locking fixture 2 is opened, and the rotating shaft is rotated so that the rear triangle of the vehicle frame and the front fork can be folded back and forth and juxtaposed together. The effect diagram after folding is shown in Figure 4. The invention realizes the folding by the rotating shaft method, which saves labor and time.

When installing the electric vehicle with the folding device of the present invention, as long as the rotating shaft axis 7 is inserted in the rotating shaft sleeve 13, the locking nut seats 21, 22 are fixed with screws, so it is more convenient when installing the folding vehicle. And when maintaining the electric vehicle equipped with the folding device of the present invention, it is only necessary to pull out the axis of the rotating shaft from the sleeve of the rotating shaft, and use a wrench to unscrew the screws of the locking and fixing device, so the present invention makes the folding car It is very convenient during maintenance.

Fig. 7 is an exploded schematic diagram of another embodiment of the electric vehicle using the folding device of the present invention. On the basis of the above structure, a spring 18, a spring buckle 19, a safety buckle base 29, and a safety buckle 28 are added. As shown in Figure 8, one end 181 of the spring 18 is installed in the shaft wall, the other end 182 is connected to the spring buckle 19, and a spring corresponding to the spring buckle is provided on the shaft wall corresponding to the horizontal axis of the spring buckle. hole A. As shown in Figure 9, the safety buckle base 29 is fixed on the outer wall of the shaft sleeve 13 by screws 20 and 26, the gasket 56 on the safety buckle 28 is fixed on the safety buckle by screws 27, and the safety buckle and the safety buckle base form a hole B, hole B corresponds to hole A. The safety buckle base 29 is provided with a card slot, and the safety buckle can move up and down along the card slot.

As shown in Figures 2, 9, 10, 11, and 14, the rotating shaft axis 7 is inserted into the rotating shaft sleeve 13, and the safety buckle 28 is moved upward along the slot of the safety buckle base, and the gasket 56 on the safety buckle 28 pushes the spring buckle 19. Make the snap buckle 19 separate from the rotating shaft sleeve 13, and after opening the locking and fixing device 2, the rotating shaft sleeve 13 can freely rotate around the rotating shaft axis 7, and the rear triangle of the frame and the front fork can be folded back and forth side by side by rotating the rotating shaft Together; as shown in Figures 10, 12, and 15, move the safety buckle 28 downward along the slot of the safety buckle base, the spring buckle 19 is engaged with the shaft sleeve through hole A, the safety buckle and the safety buckle base form hole B, and the hole A corresponds to hole B and plays a fixed role. The device of the invention is simple, easy to operate, strong in fixability and high in safety.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the scope of protection of the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the patent claims of the application. For example, the present invention can be applied to all devices similar in structure to electric vehicles, such as bicycles. Then the motor seat of the electric vehicle will be replaced by the chain wheel seat of the bicycle accordingly. And, the locking and fixing device used in the present invention is not limited to a pair of lock nut seats, and all parts with fixing functions that are convenient to assemble and disassemble can be used here, such as seat tube clips.

Claims (4)

1. A folding device for bicycles or electric vehicles, comprising a rotating shaft and a locking and fixing device, characterized in that the rotating shaft includes a rotating shaft axis and a rotating shaft sleeve that can accommodate the rotating shaft axis; the upper end of the rotating shaft axis is in contact with the vehicle The crossbeam of the front triangle of the frame is fixedly connected, and the lower end of the shaft sleeve is connected with the sprocket seat or the motor seat; the locking and fixing device is installed on the middle pipe that runs through the front triangle crossbeam of the frame, and the middle pipe includes the upper middle pipe and the Lower middle tube; the locking and fixing device includes a pair of lock nut seats with screw holes in the center, one of the pair of lock nut seats is fixed at the lower end of the upper middle tube (31), and the other is fixed at the lower middle The upper end of the pipe (32) is screwed into the screw hole with a screw to fix the locknut seat together. 2. The folding device according to claim 1, further comprising a spring, a spring buckle, a safety buckle base, and a safety buckle; One end of the spring is installed in the shaft wall, the other end is connected to the spring buckle, and a hole A corresponding to the spring buckle is provided on the shaft wall corresponding to the horizontal axis of the spring buckle; The safety buckle base is arranged on the outer wall of the shaft casing, the safety buckle is snapped on the safety buckle base, and forms a hole B with the safety buckle base, and the hole B corresponds to the hole A. 3. The folding device according to claim 2, wherein a slot is provided on the base of the safety buckle, and the safety buckle moves up and down along the slot. 4. The folding device according to claim 1, wherein a bearing is installed on the axis of the rotating shaft, and a bearing is also installed in the casing of the rotating shaft.

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