TWI580608B - Integral pedal manufacturing method - Google Patents

Description

Integrated pedal manufacturing method

The present invention relates to a pedal, and more particularly to an integrated pedal manufacturing method.

In the bicycle field, the pedal is used for the user to step on the foot to drive the crank to rotate, and the crank drives the chain and the wheel to rotate, thereby driving the bicycle.

According to the conventional pedal structure, the utility model comprises: a pedal body having a shaft hole penetrating through the two sides, the pedal body having a first end and a second end; and the two bushings respectively being the first end and the second end The two bushings each have an inner hole, and the inner hole and the shaft hole are located on the same axis; a mandrel is threaded through the inner hole for enabling the pedal body to rotate relative to the mandrel.

The two conventional bushings are respectively placed on the shaft hole by the first end and the second end. Since the pedal body and the bushing are made of plastic or rubber material, the bushing and the pedal body are rubbed against each other during the laying process. The coefficient is large, and the processing and assembly personnel need to use the hard plug to insert the two bushings into the shaft hole. Therefore, the pedal assembly time is increased, and the bushing and the shaft hole are easily damaged, and the manual assembly is easy to cause. The problem that the pedal quality cannot be unified.

Therefore, how to solve the problem that the pedal assembly processing time is too long, and the manual assembly method is easy to cause different quality and damage, how to make the pedal assembly process more streamlined and the quality of the pedal can be unified, and the relevant industry needs to solve it.

In order to solve the above problems, the present invention provides an integrated pedal and a method of manufacturing the same, in which the internal components of the pedal have been integrated in the manufacturing process, thereby reducing the manual assembly process, thereby reducing the assembly process and time to achieve uniformity. The pedal of quality.

To achieve the above object, the present invention provides an integrated pedal manufacturing method comprising the steps of: (A) providing a mold; (B) forming a pedal covering one of the bushes in the mold by a first forming process a body, wherein the outer periphery of the pedal body has a tread surface; (C) forming a non-slip portion on the tread surface of the pedal body by a second forming process; and (D) providing a mandrel for piercing On the pedal body.

Preferably, the liner is preformed or formed in a mold.

Preferably, the first forming process is plastic injection molding.

Preferably, the second forming process is plastic injection molding.

According to the above, the pedal of the present invention is integrally formed, and the bushing is not necessarily divided into two parts and placed in the pedal body, and is placed in the pedal body in a single structure, so that the bushing and the pedal body are integrated, and the manual assembly thereof is simplified. The steps prevent damage and quality due to manual assembly, thereby achieving consistency in pedal quality and reducing labor costs.

According to the above, in the manufacturing process, the first forming process and the second forming process adopt plastic injection molding, and in the manufacturing process, the pedal body is covered with the bushing, and the anti-slip portion is formed on the pedal. The foot surface of the main body can be integrated into the bushing and the anti-slip portion by a single cycle process, eliminating the need for separate processing and assembly, and simplifying the assembly and manufacturing process, thereby reducing manufacturing. Cost, and can improve the quality of the pedal.

10‧‧‧ pedal body

101‧‧‧ First Bridge Department

102‧‧‧Second Bridge Department

11‧‧‧Axis hole

111‧‧‧ first end

112‧‧‧ second end

12‧‧‧Perforation

13‧‧‧Locking space

14‧‧‧ accommodating space

15‧‧‧foot surface

20‧‧‧ bushing

21‧‧ ‧ blocking

22‧‧‧ 内孔

30‧‧‧Slip section

31‧‧‧Slip-proof parts

40‧‧‧ mandrel

41‧‧‧ fixed end

42‧‧‧Driver

50‧‧‧Fixed parts

60‧‧‧Dust cover

O‧‧‧Axis line

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partial cross-sectional view of the present invention.

Figure 2 is a flow chart of the manufacturing method of the present invention.

Figure 3 is a schematic view (I) of the present invention showing the first molding process.

Figure 4 is a schematic view (2) of the present invention showing the second molding process.

Figure 5 is a schematic view (3) of the present invention, showing that the mandrel is threaded through the inner hole and locked by the fixing member.

Figure 6 is a schematic view (4) of the present invention, showing the installation of a dust cover.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. The various items in the examples are drawn to scale in the description and not to the actual elements, and are described in the foregoing.

Referring to Figure 1, the present invention provides an integrated pedal comprising:

a pedal body 10 having a first bridge portion 101, a second bridge portion 102, a shaft hole 11, and a through hole 12 penetrating one side of the pedal body 10, the first bridge portion 101 and the second span The bridge portions 102 respectively intersect the axis line O of the shaft hole 11, the shaft hole 11 penetrates the pedal body 10 and the first bridge portion 101 and the second bridge portion 102, and the shaft hole 11 corresponds to the through hole 12, wherein the shaft hole 11 The first end 111 has a first end 111 and a second end 112. The first end 111 is disposed on the first bridge portion 101, and the second end 112 is disposed on the second bridge portion 102. The first end 111 has an inner diameter larger than the axial hole. a locking space 13 having an inner diameter of 11 and a locking space 13 communicating with the shaft hole 11 The second end 112 has an accommodating space 14 having an inner diameter larger than the inner diameter of the shaft hole 11, and the accommodating space 14 communicates with the shaft hole 11. In addition, the outer periphery of the pedal body 10 has a tread surface 15 for the user's foot to step on.

A bushing 20 is disposed in the shaft hole 11, the bushing 20 is integral with the pedal body 10, and the bushing 20 is disposed between the first end 111 and the second end 112, and each end of the bushing 20 has a blocking portion 21, the two blocking portions 21 will respectively stop in the locking space 13 and the accommodating space 14, and have an anti-off effect.

The bushing 20 has an inner hole 22, and the axial line of the inner hole 22 is located on the same axial line as the axial line O of the shaft hole 11. In addition, the bushing 20 is made of a self-lubricating engineering plastic material, and the material has a small drag coefficient for providing wear resistance and oil absorption.

An anti-slip portion 30 is disposed on the tread surface 15 of the pedal body 10 and integrally formed with the pedal body 10. The anti-slip portion 30 has at least one anti-slip member 31, and the anti-slip member 31 is disposed on the pedal near the pedal body 10. In the embodiment of the present invention, the anti-slip member 31 has an irregular shape and is slightly convex compared to the tread surface 15, and is distributed on both ends of the first bridge portion 101 and the second bridge portion 102. The side is provided to provide a suitable anti-slip effect.

A mandrel 40 is threaded through the bore 22 of the bushing 20 for enabling rotation of the pedal body 10 relative to the mandrel 40. The mandrel 40 has a fixed end 41 and a driving end 42. The fixed end 41 is located in the locking space 13 and is different from the driving end 42 of the fixed end 41. The outer edge of the pedal body 10 is exposed for screwing on a crank (Fig. Not shown).

a fixing member 50 for locking the fixed end 41 of the mandrel 40. When the mandrel 40 is inserted into the inner hole 22 from the second end 112 of the shaft hole 11, the fixed end 41 of the mandrel 40 is located in the locking space 13 and fixed. The piece 50 enters the locking space 13 by the perforation 12, and the fixed end 41 of the mandrel 40 is locked to prevent the mandrel 40 from being loosened when rotated.

A dust cover 60 is used to cover the first end 111 of the shaft hole 11 to close the locking space 13. When the fixing member 50 has locked the fixed end 41 of the spindle 40, the dust cover 60 is worn by the through hole 12. The first end 111 of the shaft hole 11 is covered to prevent dust from entering the shaft hole 11, and the dust is prevented from mixing with the lubricating oil in the shaft hole 11, thereby causing the problem that the mandrel 40 does not rotate smoothly.

One of the pedals of the present invention is integrally formed, and the bushing 20 is not necessarily divided into two parts and placed in the pedal body 10, and is integrated with the pedal body 10, and the anti-slip portion 30 is also integrated with the pedal body 10 without having to pass multiple times. The processing is completed, the structure of the pedal body 10 is simplified, the pedal is lightly weighted as a whole, and an additional assembly process can be reduced, thereby reducing the assembly processing time and improving the quality of the pedal.

Referring to FIG. 2 to FIG. 6 , the present invention provides an integrated pedal manufacturing method, which includes the following steps:

(A) A mold (not shown) is provided for providing the forming.

(B) The pedal body 10 covering the bushing 20 is formed in the mold by a first forming process, as shown in FIG. Among them, the first forming process is plastic injection molding. In addition, the tread surface 15 of the outer circumference of the pedal body 10 is used for stepping on the foot of the user; further, the bushing 20 is preformed or formed in the mold, and can be formed before the first forming process. The completed bushing 20 is placed in the mold, and the pedal body 10 is ejected and covered with the bushing 20 by the first forming process, or the bushing 20 and the pedal body 10 are formed by the first forming in the mold. After the first injection is completed, the liner 20 is covered inside the pedal body 10 after the first forming.

(C) After the first forming process, after the first forming process, the pedal body 10 of the wrapped bushing 20 is subjected to the second forming process, and the pedal surface 15 of the pedal body 10 is prevented from slipping. The portion 30 integrally forms the pedal body 10 with the anti-slip portion 30 as shown in FIG. Among them, the second forming process is plastic injection molding.

(D) A mandrel 40 is provided that is threaded through the pedal body 10. After the second forming process is completed, the mandrel 40 is inserted into the pedal body 10, and the fixing member 50 enters the locking space 13 from the through portion 111 of the shaft hole 11, and the fixed end 41 of the mandrel 40 is locked. So that the mandrel 40 is not easy to loose when rotated, as shown in FIG.

After the above steps (A) to (D) are completed, the dustproof cover 60 is inserted through the through hole 12 of the pedal body 10, and the first end 111 of the shaft hole 11 is covered, so that the locking space 13 is closed to prevent Dust enters the shaft hole 11 to complete one of the pedals of the present invention, as shown in FIG.

Referring to FIG. 2 to FIG. 6 , in the manufacturing process, the first forming process and the second forming process adopt plastic injection molding, and in the manufacturing process, the pedal body 10 is covered with the bushing 20 to form an integral body, and then The anti-slip portion 30 is formed on the tread surface 15 of the pedal body 10, and the pedal body 10 can be integrated with the bushing 20 and the anti-slip portion 30 only through two forming processes, without further processing and assembly, and streamlined. The assembly and manufacturing process can reduce the manufacturing cost and improve the quality of the pedal.

The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. Any modifications or variations that are made without departing from the spirit of the invention are intended to be protected.

10‧‧‧ pedal body

101‧‧‧ First Bridge Department

102‧‧‧Second Bridge Department

11‧‧‧Axis hole

111‧‧‧ first end

112‧‧‧ second end

12‧‧‧Perforation

13‧‧‧Locking space

14‧‧‧ accommodating space

15‧‧‧foot surface

20‧‧‧ bushing

21‧‧ ‧ blocking

22‧‧‧ 内孔

30‧‧‧Slip section

31‧‧‧Slip-proof parts

40‧‧‧ mandrel

42‧‧‧Driver

50‧‧‧Fixed parts

60‧‧‧Dust cover

O‧‧‧Axis line

Claims (6)

An integrated pedal manufacturing method comprising the steps of: (A) providing a mold; (B) forming a pedal body covering a bushing in the mold by a first forming process, wherein the pedal a peripheral surface of the body has a tread surface; (C) forming a non-slip portion on the tread surface of the pedal body by a second forming process; and (D) providing a mandrel that is disposed on the pedal body . A method of manufacturing a pedal according to claim 1, wherein the bushing is preformed or formed in the mold. The one-piece pedal manufacturing method according to claim 1, wherein the first forming process is plastic injection molding. A method for manufacturing a pedal according to claim 1, wherein the second forming process is plastic injection molding. The method for manufacturing a pedal according to claim 1, wherein the bushing is made of a self-lubricating engineering plastic material. The method for manufacturing a pedal according to claim 1, wherein the anti-slip portion is disposed near a circumference of the tread surface of the pedal body.