Plastic cover and ec crank connecting and fixing structure

Abstract

The utility model discloses plastic cover and EC crank connecting fixed structure, including EC crank, EC crank includes the fixed platform for fixing plastic cover, and the fixed platform bottom has the fixed portion annular groove, is provided with plastic cover on EC crank, and plastic cover includes fixed mouth, and the fixed mouth one end evenly is provided with a plurality of fixed buckle, and fixed buckle includes elastic deformation portion main part, and the elastic deformation portion main part has the fastening boss of cooperation fixed portion annular groove use.

Description

Technical Field

[0001] This utility model relates to mechanical parts, and more particularly to bicycle sprockets and their components. Specifically, it relates to a plastic cover and an EC crank connection and fixing structure. Background Technology

[0002] Currently, the following problems exist when fixing the plastic cover to the EC crank:

[0003] Fasteners are required for fixing: Traditional fixing methods usually require the use of fasteners such as screws and nuts, which increases material costs and assembly time;

[0004] Assembly is relatively complicated: using fasteners for fixing requires multiple steps, such as aligning the holes and tightening the screws, which makes the assembly process complicated and time-consuming;

[0005] High cost: The high labor costs in the procurement and assembly of fasteners lead to an increase in overall costs;

[0006] Complex assembly structure: In some cases, specialized locking tools or pressing pressure equipment may be required, which further increases the complexity of the equipment and operation;

[0007] Therefore, it is necessary to provide a plastic cover and EC crank connection and fixing structure to solve the above problems. Utility Model Content

[0008] The purpose of this invention is to provide a plastic cover and an EC crank connection and fixing structure.

[0009] The technical solution is as follows:

[0010] A plastic cover and EC crank connection and fixing structure includes an EC crank, the EC crank including a fixing platform for fixing the plastic cover, the fixing platform having an annular groove for fixing part at the bottom; the EC crank is provided with a plastic cover, the plastic cover including a fixing opening, one end of the fixing opening being evenly provided with a plurality of fixing buckles, the fixing buckles including an elastic deformation part body, the elastic deformation part body having a fastening boss for cooperating with the annular groove of the fixing part.

[0011] Furthermore, the upper part of the mounting platform has a tapered ramp that facilitates the insertion of the mounting opening for the plastic cover.

[0012] Furthermore, the slope of the tapering slope is 30-60°.

[0013] Furthermore, the number of fixing clips is 8-12.

[0014] Furthermore, the fastening boss has an outward expansion that facilitates the deformation of the main body of the elastic deformation section and pushes it into the slope.

[0015] Furthermore, the slope of the outward-expanding incline is 45-60°.

[0016] Compared with the prior art, this utility model can realize the quick connection of the plastic cover to the EC crank without the need for traditional fastener fixing methods. It has high assembly efficiency, good assembly quality, and facilitates the control of production costs. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of this utility model.

[0018] Figure 2 This is the second structural schematic diagram of this utility model.

[0019] Figure 3 This is the third structural schematic diagram of this utility model. Detailed Implementation

[0020] Example:

[0021] Please see Figure 1-3 This embodiment demonstrates a plastic cover and EC crank connection and fixing structure, including an EC crank 1. The EC crank 1 includes a fixing platform 2 for fixing the plastic cover, and the bottom of the fixing platform 2 has a fixing part annular groove 3. The EC crank 1 is provided with a plastic cover 4, which includes a fixing port 41. A plurality of fixing buckles 5 are evenly provided at one end of the fixing port 41. The fixing buckles 5 include an elastic deformation part body 51, and the elastic deformation part body 51 has a fastening boss 52 that cooperates with the fixing part annular groove.

[0022] The upper part of the fixed platform 2 has a tapered ramp 21 that facilitates the insertion of the fixed opening of the plastic cover.

[0023] The slope of the gradually narrowing slope 21 is 30-60°.

[0024] The number of fixing clips 5 is 8-12.

[0025] The fastening boss 5 has an outward-expanding ramp 53 that facilitates the deformation of the main body of the elastic deformation part.

[0026] The slope of the outward-expanding push-in ramp 53 is 45-60°.

[0027] Compared with the prior art, this utility model can realize the quick connection of the plastic cover to the EC crank without the need for traditional fastener fixing methods. It has high assembly efficiency, good assembly quality, and facilitates the control of production costs.

[0028] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A plastic cover and EC crank connection and fixing structure, characterized in that: The device includes an EC crank, which includes a mounting platform for fixing a plastic cover. The mounting platform has an annular groove at the bottom for fixing. The EC crank is provided with a plastic cover, which includes a fixing opening. A plurality of fixing buckles are evenly provided at one end of the fixing opening. Each fixing buckle includes an elastically deformable body, and the elastically deformable body has a fastening boss that cooperates with the annular groove of the fixing part.

2. The plastic cover and EC crank connection and fixing structure according to claim 1, characterized in that: The upper part of the mounting platform has a tapered ramp that facilitates the insertion of the mounting opening for the plastic cover.

3. The plastic cover and EC crank connection and fixing structure according to claim 2, characterized in that: The slope of a tapering slope is 30-60°.

4. The plastic cover and EC crank connection and fixing structure according to claim 1, characterized in that: The number of fixed clips is 8-12.

5. The plastic cover and EC crank connection and fixing structure according to claim 1, characterized in that: The fastening boss facilitates the outward expansion and push-in into the slope of the elastic deformation part.

6. The plastic cover and EC crank connection and fixing structure according to claim 5, characterized in that: The slope of the outward-expanding push-in ramp is 45-60°.

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