Frame folding structure of electric tricycle

Abstract

The utility model belongs to the field of three-wheel electric bicycles, and particularly discloses a frame folding structure of a three-wheel electric bicycle, which comprises a front frame, a rear frame and a connecting piece, a clamping and locking plate is welded on the front frame, a lock catch plate is welded on the rear frame, a locking part is distributed at the upper end of the lock catch plate in an outward extending and bending manner, and the connecting piece is connected with the locking part. The top end of the clamping and locking plate is arranged in a locking part at the upper end of the lock catch plate, a limiting pin is welded on the lock catch plate, bolt holes are distributed in the clamping and locking plate, a locking seat is further placed at the bottom ends of the clamping and locking plate and the lock catch plate, and the connecting piece penetrates through the lock catch plate, the limiting pin and the locking seat and then is relatively locked and fixed; the folding frame has the characteristics that the structure is simple, the whole frame can be quickly disassembled, assembled, folded and stored, and the space required by storage, transfer and transportation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of three-wheeled electric bicycles, in particular to a frame folding structure of a three-wheeled electric bicycle. Background Art

[0002] As an existing leisure sports equipment, bicycles are widely loved by young cycling enthusiasts. Their main structure includes a frame, front and rear wheels, and handlebars. The inverted three-wheeled electric vehicle is a type of electric vehicle. Its biggest feature is that it uses three wheels as support and moving force. The three wheels are supported and connected by the middle frame. For example, application No. CN201920621694.9 discloses a bicycle frame and an inverted three-wheeled bicycle, which are composed of a connected frame plus three wheels and handlebars. They are large in size and need to be folded up and down to complete the entire folding effect. The front and rear end positions can be omitted but the upper and lower ends require storage space. The entire vehicle also needs to be transported during transportation, which is more troublesome. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a frame folding structure of a three-wheeled electric vehicle, which has a simple structure and can quickly disassemble, fold and store the entire frame, thereby reducing the space required for storage and transfer and transportation.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A frame folding structure for a three-wheeled electric vehicle comprises a front frame, a rear frame and a connecting piece, a locking plate is welded on the front frame, a locking plate is welded on the rear frame, the upper end of the locking plate extends outward and is bent to have a locking portion, the top end of the locking plate is built into the locking portion of the upper end of the locking plate, a limiting pin is welded on the locking plate, pin holes are distributed on the locking plate, locking seats are also placed at the bottom ends of the locking plate and the locking plate, and the connecting piece passes through the locking plate, the limiting pin and the locking seat and is relatively locked and fixed.

[0006] A further technical solution is that the bottom ends of the locking plate and the locking plate are both inclined surfaces, and the upper end of the locking seat is provided with an inclined groove. The inclined surfaces at the bottom ends of the locking plate and the locking plate are built into the inclined grooves. The setting of the inclined surfaces makes it difficult for the locking plate and the locking plate to disengage in the locking seat, thereby improving relative firmness.

[0007] A further technical solution is that flanges are distributed on the locking seat and on the left and right ends of the outer side of the oblique groove, so that the locking plate and the bottom end of the locking plate are not easy to slide left and right in the oblique groove of the locking seat and disengage, thereby improving firmness.

[0008] A further technical solution is that the limit pin is located in the middle of the locking plate and passes through the locking plate. The limit pin is inserted into the middle of the locking plate and then welded to facilitate installation.

[0009] A further technical solution is that the width of the left end of the limit pin is greater than that of the right end. After the limit pin is welded and installed on the lock catch plate, when installing, the limit pin needs to be snapped into the insertion hole on the locking plate for positioning, and it is easier to position when inserting.

[0010] A further technical solution is that through holes are distributed on the locking seat, the locking part and the limit pin for installing connecting pieces.

[0011] A further technical solution is that an installation groove is also distributed vertically along the side of the locking plate close to the lock catch plate for installing connecting pieces.

[0012] A further technical solution is that the connecting piece is a locking bolt or a locking pin, and of course other common connecting pieces can also be used.

[0013] The beneficial effect of the present utility model is as follows: For a frame folding structure of a three-wheeled electric vehicle of the present utility model, the front frame together with the locking plate is snapped into the lock catch plate on the front frame, then a locking seat is placed at the bottom ends of the locking plate and the lock catch plate, and finally, after the connecting piece penetrates through the lock catch plate, the limit pin and the locking seat, the lock catch plate, the limit pin, the locking seat and the locking plate are relatively firmly fixed to each other, enabling quick installation and disassembly, saving time and effort. At the same time, after disassembly, it can be folded for storage and transportation, reducing the required space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a perspective view of a frame folding structure of a three-wheeled electric vehicle of the present utility model;

[0016] Figure 2 It is a schematic diagram of the lock catch plate in a frame folding structure of a three-wheeled electric vehicle of the present utility model;

[0017] Figure 3 It is a top view of the limit pin in a frame folding structure of a three-wheeled electric vehicle of the present utility model;

[0018] Figure 4 It is a schematic diagram of the locking plate in a frame folding structure of a three-wheeled electric vehicle of the present utility model;

[0019] Figure 5 It is a front view of the locking seat in a frame folding structure of a three-wheeled electric vehicle of the present utility model;

[0020] Figure 6 This is a top view of the locking seat in the frame folding structure of a three - wheel electric vehicle of the present utility model.

[0021] Figure 1-6 In the figure: 1 - front frame, 2 - rear frame, 3 - lock buckle plate, 4 - locking plate, 5 - locking seat, 6 - connecting piece, 7 - through hole, 8 - locking part, 9 - limit pin, 10 - installation groove, 11 - pin hole, 12 - bevel groove, 13 - flange. Specific embodiments

[0022] The following combines the accompanying drawings to elaborate on the preferred embodiments of the present utility model, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0023] Refer to Figures 1 to 6 As shown, a frame folding structure of a three - wheel electric vehicle includes a front frame 1, a rear frame 2 and a connecting piece 6. A locking plate 4 is welded on the front frame 1, and a lock buckle plate 3 is welded on the rear frame 2. The upper end of the lock buckle plate 3 extends outward and bends to be distributed with a locking part 8. The top end of the locking plate 4 is placed inside the locking part 8 at the upper end of the lock buckle plate 3. A limit pin 9 is welded on the lock buckle plate 3, and pin holes 11 are distributed on the locking plate 4. A locking seat 5 is also placed at the bottom ends of the locking plate 4 and the lock buckle plate 3. The connecting piece 6 passes through the lock buckle plate 3, the limit pin 9 and the locking seat 5 and is relatively locked and fixed.

[0024] The bottom ends of both the locking plate 4 and the lock buckle plate 3 are inclined planes. The upper end of the locking seat 5 is distributed with a bevel groove 12. The inclined planes at the bottom ends of the locking plate 4 and the lock buckle plate 3 are placed inside the bevel groove 12. The setting of the inclined planes makes it not easy for the locking plate 4 and the lock buckle plate 3 to be disengaged in the locking seat 5, improving the relative firmness. On the locking seat 5 and on the left and right ends outside the bevel groove 12, flanges 13 are also distributed, making it not easy for the bottom ends of the locking plate 4 and the lock buckle plate 3 to slide left and right and be disengaged in the bevel groove 12 of the locking seat 5, improving the firmness. The limit pin 9 is located at the middle position of the lock buckle plate 3 and penetrates the lock buckle plate 3. After the limit pin 9 is inserted into the middle position of the lock buckle plate 3, it is welded, which is convenient for installation. The width of the left end of the limit pin 9 is greater than that of the right end. After the limit pin 9 is welded and installed on the lock buckle plate 3, when installing, the limit pin 9 needs to be inserted into the pin hole 11 on the locking plate 4 for positioning, and it is easier to position when inserting. Through holes 7 are distributed on the locking seat 5, the locking part 8 and the limit pin 9 for installing the connecting piece 6. Along the vertical direction on the side of the locking plate 4 close to the lock buckle plate 3, an installation groove 10 is also distributed for installing the connecting piece 6. The connecting piece 6 is a locking bolt or a locking pin. Of course, other common connecting pieces can also be used.

[0025] In this embodiment, during installation, first, the front frame 1 together with the locking plate 4 is snapped into the locking plate 3 on the front frame 1. At this time, the limit pin 9 on the locking plate 3 is inserted into the pin hole 11 on the locking plate 4 for positioning, so that the locking plate 4 and the locking plate 3 cannot move back and forth. Then, the locking seat 5 is placed at the bottom of the locking plate 4 and the locking plate 3. Finally, after the connecting piece 6 passes through the locking plate 3, the limit pin 9 and the locking seat 5, the locking plate 3, the limit pin 9, the locking seat 5 and the locking plate 4 are relatively firmly fixed, and the front frame 1 and the rear frame 2 can be connected and fixed. During disassembly, after taking out the connecting piece 6, then taking out the locking plate 4 can quickly complete the installation or disassembly, so that the front frame 1 and the rear frame 2 can be separated, disassembled, folded and transported mutually, reducing the space required for transportation and storage.

[0026] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0027] The above embodiment is only an example of the present invention and is not used to limit the implementation and scope of rights of the present invention. Any technical solution that is the same as or equivalent to the content described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A frame folding structure of a three-wheeled electric vehicle, comprising a front frame, a rear frame and a connecting piece, characterized in that: A locking plate is welded on the front frame, and a locking plate is welded on the rear frame. The upper end of the locking plate extends outward and is bent to form a locking portion. The top end of the locking plate is built into the locking portion of the upper end of the locking plate. A limiting pin is welded on the locking plate, and pin holes are distributed on the locking plate. Locking seats are also placed at the bottom ends of the locking plate and the locking plate. The connecting piece passes through the locking plate, the limiting pin and the locking seat and is relatively locked and fixed.

2. The frame folding structure of a three-wheeled electric vehicle according to claim 1, characterized in that: The bottom ends of the locking plate and the locking plate are both inclined surfaces, and the upper end of the locking seat is provided with an inclined groove, and the inclined surfaces at the bottom ends of the locking plate and the locking plate are built into the inclined groove.

3. The frame folding structure of a three-wheeled electric vehicle according to claim 2, characterized in that: Flanges are also distributed on the locking seat and at the left and right ends of the outer side of the oblique groove.

4. The frame folding structure of a three-wheeled electric vehicle according to claim 1, characterized in that: The limit pin is located in the middle of the locking plate and passes through the locking plate.

5. The frame folding structure of a three-wheeled electric vehicle according to claim 4, characterized in that: The width of the left end of the limiting pin is greater than the width of the right end.

6. The frame folding structure of a three-wheeled electric vehicle according to claim 1, characterized in that: The locking seat, the locking portion and the limiting pin are all provided with through holes.

7. The frame folding structure of a three-wheeled electric vehicle according to claim 1, characterized in that: The locking plate is also provided with mounting grooves along the vertical direction on one side close to the locking plate.

8. The frame folding structure of a three-wheeled electric vehicle according to claim 1, characterized in that: The connecting piece is a locking bolt or a locking latch.

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