Retractable and extensible carrying platform of rear goods shelf of electric bicycle

Abstract

The utility model provides an electric bicycle rear goods shelf telescopic and extensible loading platform, which relates to the technical field of electric bicycles and comprises a base, a mounting frame and a mounting column are respectively arranged at the bottom and the side of the base, and the base is fixedly mounted on a frame of an electric bicycle through the mounting frame and the mounting column. The top of the base is provided with a pair of oppositely-opened unfolding plates, and the unfolding plates are hinged to the side portion of the base. A sliding cavity is formed in the base, and a telescopic plate is slidably connected into the sliding cavity. A plurality of fixing holes are evenly distributed in the telescopic plate in the length direction, at least one pair of positioning grooves are formed in the top and the bottom of the sliding cavity, spring pins are arranged at the bottom of the base, and the spring pins sequentially penetrate through the positioning grooves in the bottom of the sliding cavity and the fixing holes in the telescopic plate and penetrate into the positioning grooves in the top of the sliding cavity. A flexible expansion mechanism is provided, the size of a carrying area can be expanded according to needs, and the requirements of large objects or temporary expansion are met.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle technology, specifically to a retractable and expandable cargo platform for the rear rack of an electric bicycle. Background Technology

[0002] Electric bicycles are mechatronic personal transportation tools that use batteries as auxiliary power. They integrate a motor, controller, battery, control components, and instrument system into the traditional bicycle, combining riding convenience with power assistance. The rear rack, as an important component, is usually fixed to the rear of the frame and used to carry passengers or goods. However, as users' needs for carrying goods on electric bicycles increase (such as daily shopping, food delivery, and cargo transportation), the limitations of traditional rear racks are becoming increasingly apparent. Existing rear racks use welded or bolted metal frames, lacking flexible expansion mechanisms, and the fixed size of the carrying area makes it difficult to accommodate large items or temporary expansion needs.

[0003] Therefore, this utility model proposes a retractable and expandable cargo platform for the rear rack of an electric bicycle. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a retractable and expandable cargo platform for the rear rack of an electric bicycle. It features a flexible expansion mechanism that allows for the expansion of the cargo area size as needed, accommodating large items or temporary expansion requirements.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A retractable and extendable cargo platform for the rear rack of an electric bicycle includes a base. The base has mounting brackets and mounting posts at its bottom and sides, respectively, and is fixedly mounted to the frame of the electric bicycle via the mounting brackets and mounting posts. The top of the base has a pair of split-opening expansion plates, which are hinged to the sides of the base. The base has a sliding cavity inside, and a telescopic plate is slidably connected within the sliding cavity. The telescopic plate has several fixing holes evenly distributed along its length. The top and bottom of the sliding cavity have at least one pair of positioning grooves. The bottom of the base has a spring pin that sequentially passes through the positioning groove at the bottom of the sliding cavity, the fixing holes of the telescopic plate, and into the positioning groove at the top of the sliding cavity.

[0007] Preferably, the sliding cavity is provided with slide rails on both sides that can slide along the length direction. The slide rails have a groove-shaped structure. The telescopic plate is embedded in the slide rails by a slider, and ball bearings are provided between the slider and the slide rails.

[0008] Preferably, the upper surface of the unfolding plate is provided with a vibration damping pad.

[0009] Preferably, the upper surface of the unfolding plate is provided with a recessed handle.

[0010] Preferably, the telescopic plate is provided with several rope-threading holes.

[0011] Preferably, the upper surface of the telescopic plate is provided with anti-slip texture.

[0012] Preferably, the mounting bracket and mounting post are connected to the frame of the electric bicycle via quick-release bolts with release pads.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] Using this solution, the base is installed on the frame of the electric bicycle through the mounting bracket and mounting column; when the extension function is required, the split-type unfolding plate can be unfolded along the width direction of the base, and the telescopic plate can be slid out from the sliding cavity of the base pair, and the spring pin passes through the positioning groove at the bottom of the sliding cavity (13), the fixing hole of the telescopic plate and the positioning groove at the top of the sliding cavity in sequence to complete the fixation of the telescopic position, thereby realizing the unfolding along the length direction of the base, thus having a flexible expansion mechanism, which can expand the size of the carrying area as needed to adapt to large items or temporary expansion needs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a retractable and expandable cargo platform for the rear rack of an electric bicycle according to the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the internal structure of the central base;

[0018] Attached diagram labels: 1-Base; 11-Mounting bracket; 12-Mounting column; 13-Sliding cavity; 14-Positioning groove; 15-Spring pin; 16-Slide rail; 17-Slider; 18-Ball bearing; 2-Expanding plate; 21-Handle; 3-Telescopic plate; 31-Fixing hole; 32-Rope hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] This embodiment proposes a retractable and expandable cargo platform for the rear rack of an electric bicycle, such as... Figure 1 and Figure 2 As shown, the device includes a base 1, with mounting brackets 11 and mounting posts 12 respectively provided at the bottom and sides of the base 1, which are fixedly mounted on the frame of an electric bicycle. The top of the base 1 is provided with a pair of split-opening expansion plates 2, which are hinged to the sides of the base 1. The base 1 has a sliding cavity 13 inside, and a telescopic plate 3 is slidably connected inside the sliding cavity 13. The telescopic plate 3 has a plurality of fixing holes 31 evenly distributed along its length. The top and bottom of the sliding cavity 13 are provided with at least a pair of positioning grooves 14. The bottom of the base 1 is provided with a spring pin 15, which passes through the positioning groove 14 at the bottom of the sliding cavity 13, the fixing holes 31 of the telescopic plate 3, and into the positioning groove 14 at the top of the sliding cavity 13.

[0023] Working principle: The base 1 is installed on the frame of the electric bicycle through the mounting bracket 11 and the mounting post 12. When the extension function is required, the split-type unfolding plate 2 can be unfolded along the width direction of the base 1. At the same time, the telescopic plate 3 can be slid out from the sliding cavity 13 of the base 1. The spring pin 15 passes through the positioning groove 14 at the bottom of the sliding cavity 13, the fixing hole 31 of the telescopic plate 3, and the positioning groove 14 at the top of the sliding cavity 13 in sequence, thus fixing the telescopic position. This allows the base to be unfolded along the length direction of the base 1, thus having a flexible expansion mechanism. The size of the carrying area can be expanded as needed to accommodate large items or temporary expansion needs.

[0024] In this embodiment, the sliding cavity 13 is provided with slide rails 16 on both sides that can slide along the length direction. The slide rails 16 have a groove-shaped structure. The telescopic plate 3 is embedded in the slide rails 16 by a slider 17, and ball bearings 18 are provided between the slider 17 and the slide rails 16.

[0025] In this embodiment, the upper surface of the unfolding plate 2 is provided with a vibration damping pad.

[0026] In this embodiment, the upper surface of the unfolding plate 2 is provided with a recessed handle 21.

[0027] In this embodiment, the telescopic plate 3 is provided with a plurality of rope holes 32.

[0028] In this embodiment, the upper surface of the telescopic plate 3 is provided with anti-slip texture.

[0029] In this embodiment, the mounting bracket 11 and the mounting post 12 are connected to the frame of the electric bicycle by quick-release bolts with release pads.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric bicycle rear cargo carrier telescoping expansion load platform characterized by: The utility model provides a kind of electric bicycle folding device, including base (1), the bottom and side portion of the base (1) are equipped with mounting bracket (11) and mounting column (12) respectively and are fixedly installed on the frame of electric bicycle by mounting bracket (11) and mounting column (12);The top of the base (1) is equipped with a pair of unfolding plate (2) of split type, and the unfolding plate (2) is hinged with the side portion of base (1);The inside of the base (1) is equipped with sliding cavity (13), and the sliding cavity (13) is slidably connected with telescopic plate (3);The telescopic plate (3) is uniformly distributed with several fixed holes (31) along length direction, and the top and bottom of the sliding cavity (13) are equipped with at least a pair of positioning slot (14), and the bottom of the base (1) is equipped with spring pin (15), and the spring pin (15) is sequentially penetrated positioning slot (14) of the bottom of sliding cavity (13), fixed hole (31) of telescopic plate (3) and inserted into positioning slot (14) of the top of sliding cavity (13).

2. An electric bicycle rear carrier telescopic extension load platform according to claim 1, characterized in that: The both sides of the sliding cavity (13) are equipped with slide rail (16) that can slide along length direction, the slide rail (16) is recessed groove type structure, the telescopic plate (3) is embedded in slide rail (16) by sliding block (17), and ball (18) is equipped between sliding block (17) and slide rail (16).

3. The electric bicycle rear cargo carrier extendable load platform of claim 1, wherein: The upper surface of the unfolding plate (2) is equipped with damping pad.

4. The electric bicycle rear cargo carrier extendable load platform of claim 1, wherein: The upper surface of the unfolding plate (2) is equipped with concave handle (21).

5. The electric bicycle rear cargo carrier telescoping expansion load platform of claim 1, wherein: The telescopic plate (3) is equipped with several rope penetrating holes (32) in penetration.

6. The electric bicycle rear cargo carrier extendable load platform of claim 1, wherein: The upper surface of the telescopic plate (3) is equipped with anti-skid line.

7. The electric bicycle rear cargo carrier telescoping expansion load platform of claim 1, wherein: The mounting bracket (11) and mounting column (12) are connected with the frame of electric bicycle by quick-release bolt with loose rubber pad.

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