TWM601171U - Flywheel disassembling tool - Google Patents

Abstract

A tool for disassembling and replacing bicycle transmission flywheels, including a locking ring wrench and a rotating wrench. The locking ring wrench is used to loosen the locking ring, and the turning wrench is used to engage the flywheel and fix it against rotation.

Description

Flywheel tool removal

This creation is about a tool for dismantling and replacing bicycle transmission flywheels, including a locking ring wrench and a rotating wrench. By using the hub fixed shaft as the center of rotation, one hand is used to fix the rim and the other hand controls the relative rotation direction of the wrench set to achieve the purpose of replacing the flywheel.

As shown in Figure 1, a swivel wrench 2a with a multi-mesh chain 2b is used to engage the flywheel 4a so that it does not rotate, and a hexagonal sleeve 1b with bolt-shaped teeth engages with a groove-shaped locking ring 3a, use the split wrench 1a to rotate the sleeve to loosen the locking ring 3a. This action requires two hands to hold the opening wrench 1a and the turning wrench 2a respectively. Therefore, the rim must be fixed with the help of the body or other tools to remove the flywheel.

This creation provides a locking ring wrench with at least one bolt-shaped tooth-shaped locking ring for engaging with a grooved portion, and a rotating wrench with at least one matching flywheel concave portion for both meshing, and two For the relative rotation direction of the wrench, one is used to prevent the flywheel from rotating, and the other is to loosen the locking ring.

1: Locking ring wrench

11: Bolt tooth

12: Tire lifter warped end

2: Turning wrench

21: Tooth (meshing surface)

3: Locking ring

31: Groove (meshing surface)

4: flywheel

41: concave part (meshing surface)

5: Hub

6: Tires

1a: open spanner

1b: sleeve

2a: Turning wrench

2b: chain

3a: Locking ring

4a: flywheel

51a: Hub axle

[Picture 1] is a tool set for dismantling and replacing the conventional flywheel.

[Figure 2] is the front view of this creation.

[Figure 3] is a three-dimensional exploded view of this creation.

[Figure 4] is a cross-sectional view of this creation.

[Figure 5] is a cross-sectional view of a part of this creation.

[Figure 6] is an example diagram of this creative wrench and locking ring.

Please refer to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a hole is provided at an appropriate position at one end of the locking ring wrench, and bolt-shaped teeth 11 are provided along the axial direction around the hole. The function of the bolt-shaped tooth 11 is to apply a counterclockwise rotation force to the locking ring wrench 3 to loosen the locking ring 3 after meshing with the groove portion 31 of the locking ring 3.

Please refer to Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a perforation is provided in the center of the large arc end of the turning wrench 2, and an arc-shaped tooth portion 21 is provided along the axial direction around the large arc end. The function of this toothed portion 21 is to apply a clockwise rotation force to the control wrench 3 to fix the flywheel 4 after meshing with the concave portion 41 of the flywheel 4.

Please refer to Figure 2, Figure 3, Figure 4 and Figure 5. This creative department provides a tool for dismantling and replacing the flywheel. The procedure is as follows: firstly, the toothed part 21 of the turning wrench 2 is engaged with the concave part of the flywheel 4 to prevent the flywheel from rotating; secondly, the bolt-shaped teeth 11 of the locking ring wrench 1 and the groove of the locking ring 3 The shape part 31 engages with the steering wrench 2 to form a single-handed angle that can be rotated relative to the hub axle 51 as the center of rotation, that is, the steering wrench 2 is forward rotation, and the locking ring wrench 1 is reverse. Loosen the locking ring 3 to separate the locking ring 3 from the hub 5, and then the flywheel 4 can be detached from the hub 5 to achieve the purpose of replacing the flywheel.

1: Locking ring wrench

2: Turning wrench

3: Locking ring

4: flywheel

5: Hub

6: Tires

Claims (5)

A tool for disassembling and replacing a flywheel includes a locking ring wrench and a turning wrench; the locking ring wrench has at least a bolt-shaped tooth; the turning wrench has at least a tooth-shaped part. When disassembling and replacing the tool of the flywheel as described in claim 1, you can also first engage the bolt-shaped teeth of the locking ring wrench with the groove-shaped part of the locking ring, and then turn the tooth-shaped part of the turning wrench After meshing with the concave part of the flywheel, rotate the locking ring in the opposite direction. As for the tool for dismantling and replacing the flywheel as described in claim 1, the bolt-shaped teeth of the locking ring wrench can be punched or another bolt-shaped tooth part can be inlaid or welded into one body. As for the tool for replacing the flywheel as described in claim 1, the other end of the locking ring wrench can be made into a tire lifter in another process as a tool for replacing tires; the other end of the turning wrench can also have the same function . As the tool for disassembling and replacing the flywheel as described in claim 1, the toothed part of the wrench can also be made into at least one concave part such as a cylinder between the inner links of the chain to engage the flywheel.

Images