TWI845348B - Chain removal tool and chain removal component - Google Patents

Abstract

A chain removal tool has a main body; a slideway is arranged in the main body; a driving shaft is pivotally disposed in the main body in the way of in-situ rotation; two sliders are disposed in the slideway, each of the slider is provided with a jaw, and the two jaws expose out of the main body. When the drive shaft rotates in one direction, the two sliders are driven to move towards each other synchronously; when the drive shaft rotates in another direction, the two sliders are driven to move in opposite directions synchronously and away from each other; the two jaws are displaced along with the two sliders. A chain removal component includes the chain dismantling tool, and includes a seat portion, a recess and a support portion provided on the main body; an ejecting pin is screwed in a screw hole provided on the seat portion. When the ejecting pin rotates, it moves in or out of the recess.

Description

Chain disassembly tool and chain disassembly assembly

The present invention relates to a hand tool used for bicycles, in particular, to a disassembly tool and a disassembly assembly for disassembling and assembling a quick-release chain.

Types of bicycle chains include a quick-release chain having a pair of cleats that can be quickly coupled to and separated from links of the chain to facilitate assembly or disassembly of the bicycle chain.

In order to allow bicycle enthusiasts to easily disassemble and assemble bicycle chains, the inventor developed the chain quick-release device invention patent No. I779856 in Taiwan. The prior art provides a quick-release chain disassembler that can disassemble and assemble quick-release chains, and its small size makes it easy to carry around, and it has practical effects.

The inventor adheres to the spirit of continuous improvement and continues to innovate and develop a special tool for disassembling a quick release chain, and has completed the present invention through research and development.

One object of the present invention is to provide an innovative chain disassembly tool for disassembling and assembling quick-release chains.

Another object of the present invention is to provide a chain disassembly assembly that can disassemble and assemble a quick-release chain and has the function of disconnecting and connecting the chain links.

The present invention provides a chain disassembly tool, comprising: a main body; a slideway, arranged in the main body; a drive shaft, pivotally arranged in the main body in a manner of rotating in situ; two sliders, slidably arranged in the slideway; each of the two sliders is provided with a jaw, and the two jaws are exposed from one side of the main body; when the drive shaft rotates in one direction, the two sliders are driven to move toward each other synchronously and approach each other; when the drive shaft rotates in another direction, the two sliders are driven to move in the opposite direction synchronously and move away from each other; the two jaws move respectively with the displacement of the two sliders.

Thus, when the drive shaft is rotated, the two sliders can be driven to move synchronously, so that the two jaws can be synchronously moved closer to or farther from each other to disassemble or assemble the quick-release chain. When the chain disassembly tool is in use, the drive shaft does not move, and there will be no axial position change.

Preferably, the drive shaft is pivoted in the slideway, and a first threaded portion and a second threaded portion are provided on the shaft, and the first threaded portion and the second threaded portion are threads in opposite directions; the two slide blocks are each provided with a first screw hole and a second screw hole, and the first screw hole and the second screw hole have threads in opposite directions; the two slide blocks are respectively screwed to the first threaded portion and the second threaded portion of the drive shaft through the first screw hole and the second screw hole.

Preferably, two end plugs are respectively arranged at two ends of the slideway; the two ends of the drive shaft are respectively pivoted in the two end plugs, the drive shaft is constrained by the two end plugs, and the two ends of the drive shaft are supported by the two end plugs.

Preferably, the circumference of the slideway is provided with at least one first engaging portion; the circumferences of the two sliders are each provided with at least one second engaging portion, and the second engaging portions of the two sliders are engaged with the first engaging portions of the slideway, so that the sliders will not rotate when they are displaced in the slideway.

Preferably, the shaft of the drive shaft has a central portion located between the first and second threaded portions; the central portion of the drive shaft is supported in the slideway.

The present invention also provides a chain disassembly assembly, comprising: the aforementioned chain disassembly tool; and a seat, a recess and a stop seat, arranged on the main body; a top pin screw hole, penetrating the seat, one end of which is connected to the recess; a recess, arranged in the stop seat, one end of which is connected to the recess; a top pin, having a screw rod, a head and a pin, respectively arranged at the two ends of the screw rod, the top pin is screwed to the top pin screw hole of the seat with the screw rod, and the pin faces the recess and the stop seat; when the top pin rotates, the top pin and the pin move into or out of the recess.

Preferably, the main body is provided with a coupling portion for the chain disassembly assembly to be coupled to other items, such as a folding tool set.

Preferably, the head is formed with a hinge portion to allow the chain to be disassembled and hinged to other items, such as a folding tool set.

Preferably, the jaws of the two slide blocks are exposed on the first side of the main body; the seat, the recess and the stop are arranged on the second side of the main body; the axis of the top pin screw hole is parallel to the axis of the slideway. The folding tool assembly has a compact size.

10: Chain removal tool

15: Chain disassembly and assembly

20: Subject

201: Lean on the board

21: First end

22: Second end

23: Connection parts

24: Slideway

241: Side wall

25: Junction

251:Piercing

26: End plug

261: hinge

27: flange

28: Open mouth

29: First embedded part

30: Drive shaft

31: End

32: First threaded portion

34: Second thread portion

35: Central Department

36: Operation Department

40, 41: Sliders

42: First screw hole

44: Second screw hole

46: Jaw

48: Second embedded part

50: Seat

51: Top pin screw hole

54: Alcove

55: Positioning block

57: Arrive at your seat

58: Recessed

60, 60’: Top pin

62: Screw part

63, 63’: Head

631: Operation Department

64: Sales Department

70: Folding tool set

72: Shaft

75: Hexagonal wrench

76:Hand tools

80: Quick-release chain

82: Buckle

821: Buttonhole

84, 85: deduction pin

86: Roller

C1, C2: Axial

The purpose, features and effects achieved by the present invention can be understood from the following description and drawings of the preferred embodiments, wherein: Figure 1 is a cross-sectional view of a chain disassembly tool of a preferred embodiment of the present invention.

Figure 2 is a three-dimensional diagram of the chain disassembly assembly of a preferred embodiment of the present invention.

Figure 3 is an exploded 3D diagram of Figure 2.

Figure 4 is a cross-sectional view taken along line 4-4 of Figure 2.

Figure 5 is a three-dimensional diagram of the chain disassembly tool and chain disassembly assembly in Figure 2 from another angle.

Figure 6 is an exploded 3D diagram of Figure 5.

Figures 7 and 8 show an application example of the chain disassembly assembly of the present invention combined with a folding tool set.

FIG9 shows a three-dimensional view of the chain disassembly tool of the present invention disassembling a quick-release chain in the application example of FIG7 .

Figure 10 is a longitudinal cross-sectional view of Figure 9.

Figure 11 is a schematic diagram of the chain disassembly assembly of Figure 7 for chain breaking.

Figures 12 and 13 show another application example of the chain disassembly assembly of the present invention combined with a folding tool set.

FIG14 shows a three-dimensional view of the chain disassembly tool of the present invention disassembling a quick-release chain in the application example of FIG12 .

Figure 15 is a longitudinal cross-sectional view of Figure 14

FIG. 1 is a cross-sectional view of a preferred embodiment of the chain disassembly tool 10 provided by the present invention. FIG. 2 to FIG. 6 show a chain disassembly assembly 15 of a preferred embodiment of the present invention. The chain disassembly assembly 15 is a composite tool set including the structure of the chain disassembly tool 10 shown in FIG. 1.

Please refer to Figures 1 to 3. The chain disassembly tool (hereinafter referred to as the disassembly tool) 10 has: a main body 20, a drive shaft 30 and two slides 40, 41. The main body 20 has a first end 21 and a second end 22; a slide 24 is provided in the main body 20, and is located between the first end 21 and the second end 22. The periphery of one side of the main body 20 has an opening 28 arranged along the axial direction of the slide 24 and penetrating the two ends of the main body 20. The opening 28 connects the slide 24, so that the slide 24 communicates with the outside. The main body 20 has a connecting portion 23 at the center of the opening 28, and the connecting portion 23 connects to form two side walls 241 of the slide 24, and closes the center of the opening 28.

The front section and the rear section of the shaft of the drive shaft 30 are respectively provided with a first threaded portion 32 and a second threaded portion 34, and the first threaded portion 32 and the second threaded portion 34 are opposite threads, that is, one threaded portion is a clockwise thread, and the other threaded portion is a counterclockwise thread. The drive shaft 30 is pivotally arranged in the main body 20 in a rotating manner. In detail, in this embodiment, the two ends of the slideway 24 penetrate the first end 21 and the second end 22 of the main body 20, and the two end plugs 26 are respectively screwed to the two ends of the slideway 24 to close the slideway 24. The drive shaft 30 is installed in the slideway 24, and its two ends 31 are cylindrical and respectively penetrate and pivot in the pivot holes 261 of the two end plugs 26. In this way, the drive shaft 30 is constrained by the two end plugs 26 and can only rotate in place in the slideway 24 without getting out of the slideway. In addition, a cylindrical central portion 35 is formed on the shaft of the drive shaft 30 and is located between the two threaded portions 32 and 34. The central portion 35 is supported by an annular flange 27 provided in the slideway 24, as shown in FIG1, and the two ends 31 of the drive shaft 30 are supported by the two end plugs 26. In this way, in the slideway 24, the two ends 31 of the drive shaft 30 and the central portion 35 are supported, so that the drive shaft 30 can rotate stably and drive the sliders 40 and 41 to move smoothly and stably. The flange 27 is provided at the connection portion 23.

The two sliders 40 and 41 are respectively provided with a first screw hole 42 and a second screw hole 44 penetrating through the two end surfaces thereof, and the first screw hole 42 and the second screw hole 44 are oppositely threaded. Two jaws 46 are respectively fixed to the two sliders 40 and 41, and the jaws and the sliders are integrally formed. The two sliders 40 and 41 are slidably installed in the slideway 24, and the screw holes 42 and 44 are respectively screwed to the first threaded portion 32 and the second threaded portion 34 of the drive shaft 30. When the drive shaft 30 rotates, the two sliders 40 and 41 can be driven to move synchronously. The two jaws 46 are exposed from the main body 20 through the opening 28 provided on the first side of the main body 20 (e.g., the top side in the state shown in FIG. 2 and FIG. 3 ), and correspondingly, the two jaws 46 are respectively located on the two sides of the connecting portion 23. When the drive shaft 30 rotates in a clockwise direction, for example, in a clockwise direction, the two sliders 40 and 41 are driven to move toward each other synchronously, that is, the two sliders 40 and 41 move inwardly and approach each other, and the two jaws 46 respectively approach each other as the two sliders move toward each other, and the distance between them is reduced. When the drive shaft 30 rotates in another clockwise direction, for example, counterclockwise, the two sliders 40 and 41 are driven to move in the opposite direction synchronously, that is, the two sliders 40 and 41 move outward and away from each other, and the two jaws 46 move away from each other following the reverse displacement of the two sliders 40 and 41, increasing the distance between them.

In order to prevent the sliders 40 and 41 from rotating when they are displaced in the slideway 24, the peripheral wall of the slideway 24 is axially provided with at least one first interlocking portion 29, and the peripheral surface of each slider is provided with at least one second interlocking portion 48, which is interlocked with the first interlocking portion 29. The first interlocking portion 29 and the second interlocking portion 48 are concave-convex matching structures, interlocking with each other. The interlocking structure can prevent the slider from rotating. There are other implementation methods for preventing the slider from rotating, which are not limited to those shown in this embodiment.

Please refer to Figures 4 to 6. The chain disassembly assembly (hereinafter referred to as the disassembly assembly) 15 has a main body 20 of the chain disassembly tool 10 and a chain breaking assembly provided on the main body 20. The second side of the circumference of the main body 20 (referring to the side other than the first side mentioned above) is linearly provided with a seat 50, a recess 54 and a stop 57 in sequence. A top pin screw hole 51 passes through the seat 50 and is connected to the recess 54. A plurality of positioning blocks 55 are provided in the recess 54. A recess 58 is provided in the stop 57, one end of which is connected to the recess 54, and the recess 58 is aligned with the axial direction of the top pin screw hole 51.

A top pin 60 has a screw portion 62, a head portion 63 and a pin portion 64, which are respectively arranged at the outer end and the inner end of the screw portion 62. The top pin 60 is screwed to the top pin screw hole 51 of the seat portion 50 by the screw portion 62, and the pin portion 64 faces the recess 54 and the stop seat 57. The top pin 60 can be rotated from the head portion 63 to move into or out of the recess 54. The seat portion, the recess, the stop seat and the top pin 60 form the aforementioned chain-breaking assembly.

In order to save the volume of the disassembly assembly 15 and the main body 20, the axial direction C1 of the slideway 24 and the axial direction C2 of the top pin screw hole 51 are parallel, as shown in FIG4.

In application, as shown in FIG. 2 and FIG. 5 , the main body 20 may be provided with a coupling portion 25 , and the coupling portion 25 is provided with a through hole 251 , which can be used to be hinged on a shaft 72 of a folding tool set 70 , as shown in FIG. 7 . By designing that the coupling portion 25 is hinged on the shaft 72 , the chain disassembly assembly 15 can be stored in the disassembly tool set 70 , or as shown in FIG. 8 , the disassembly assembly 15 can be pulled outward for use. Preferably, the coupling portion 25 is fixedly connected to the other end of the stop 57 .

The main body 20 of the chain disassembly tool 10 in FIG. 1 may also be provided with the aforementioned coupling portion 25, so that the disassembly tool 10 can be hinged and stored in a folding tool set.

Please refer to Figures 9 and 10, which show the use of the chain disassembly tool 10 of the chain disassembly assembly 15 to disassemble a quick-release chain 80. The quick-release chain 80 has a pair of buckles 82, and the chain link formed by the pair of buckles 82 has two buckle pins 84 and 85. The buckle pin 84 buckles the buckle hole 821 of one buckle plate 82; similarly, the buckle pin 85 buckles the buckle hole of the other buckle plate.

When the quick-release chain 80 is to be disassembled, the chain is placed on the disassembly tool 10 so that the two jaws 46 extend into the chain and contact the rollers 86 of the two buckle pins 84 and 85. The main body 20 is provided with a support plate 201 on the circumference of the first side for the chain 80 to lean against so that it will not bend.

The drive shaft 30 is rotated with a hand tool, for example, a hexagonal wrench 75 is inserted into the hexagonal hole-shaped operating portion 36 provided at one end of the drive shaft 30, and the drive member 30 is rotated in a clockwise direction (for example, counterclockwise) from the operating portion 36. The drive member 30 rotates in situ and synchronously drives the two slides 40 and 41 to move toward each other through the first and second threaded portions 32 and 34. The two slides drive the two jaws 46 to approach each other synchronously, so that the two jaws 46 drive the two buckle pins 84 and 85 to move closer to each other, so that the two buckle pins 84 and 85 no longer buckle the buckle hole 821 of the buckle plate 82. Figures 9 and 10 show the state where the two buckle pins 84 and 85 are not buckled in the buckle holes. In this way, the two buckle pins 84 and 85 can be separated from the two buckle plates 82 respectively to unlock the quick-release chain 80.

Please refer to Figure 11. The chain disassembly assembly 15 can be used to break the chain. When the chain is to be broken, a chain 88 (which can be a traditional chain or a quick-release chain) is placed across the recess 54, and the pin portion 64 of the push pin 60 is aligned with a chain pin of the chain 88. Then, the push pin 60 is rotated from the head 63 with a hand tool 76, for example, a hexagonal wrench is inserted into a hexagonal hole-shaped operating portion 631 provided on the head 63 to rotate the push pin 60, so that the push pin 60 moves toward the recess 54 and the stop 57. The pin portion 64 extends into the chain 88, and a chain pin of the chain is pushed out of the chain. The pushed-out chain pin falls into the recess 58 of the stop 57. In this way, the links of the chain 88 can be disconnected and connected to reduce or increase the links and adjust the length or tightness of the chain.

Figures 12 and 13 show another application example of the chain disassembly assembly 15 of the present invention combined with a folding tool set, wherein: the head 63' of the top pin 60' is arranged in a ring shape to form a hinge portion with a perforation, and the head 63' is hinged to a shaft 72 of a folding tool set 70, and the top pin 60' becomes a rotating arm for storing the disassembly assembly 15 in the folding tool set 70 or pulling it out for use. In this application example, the main body 20 is not provided with a joint portion.

Figures 14 and 15 show the use of the chain disassembly tool 10 of the chain disassembly assembly 15 of Figure 12 to disassemble a quick release chain 80. When the quick release chain 80 is to be disassembled, the chain is placed on the disassembly tool 10 so that the two jaws 46 extend into the chain and contact the rollers 86 of the two buckle pins 84 and 85 of the chain. The driving member 30 is rotated in a clockwise direction by a tool 74 of the folding tool set 70. The driving member 30 rotates in place and synchronously drives the two sliders 40 and 41 to move toward each other through the first and second threaded portions 32 and 34, driving the two jaws 46 to approach each other synchronously. The two jaws 46 drive the two buckle pins 84 and 85 to move closer to each other, so that the two buckle pins 84 and 85 no longer buckle the buckle hole 821 of the buckle plate 82, thereby unlocking the quick-release chain 80.

The chain disassembly assembly 15 shown in FIG14 can also be used to disconnect the chain. Its usage is the same as that shown in FIG11 and will not be described in detail.

The actuation relationship of the chain disassembly tool 10 of the present invention is that the drive shaft 30 does not move linearly to drive the two sliders 40 and 41 to move synchronously toward or away from each other, and its structural design is different from similar items. The drive shaft 30 only rotates and does not move. The drive shaft 30 does not move in the axial direction, so it does not protrude from the main body 20. The drive shaft does not change its position in the axial direction at any time (for example, during use or when stored), which is convenient for use and storage. The chain disassembly assembly 15 of the present invention is a multi-functional tool set, which has the dual functions of disassembling and assembling quick-release chains and breaking and assembling chains, and has high applicability and convenience. The chain disassembly tool 10 is disposed on the first side of the circumference of the main body 20, and the chain breaking assembly with the chain breaking function is disposed on the second side of the circumference of the main body. The first side and the second side are preferably opposite sides of the main body, such as the top and bottom sides of the main body. In this way, the chain disassembly assembly 15 is light in size, does not take up space, and is easy to carry.

The above-mentioned embodiments are only for the purpose of illustrating the features of the present invention and are not intended to be limiting. Any equivalent modifications of the present invention shall be deemed to be within the scope of protection of the present invention. The present invention is the first innovative structure of similar articles and has improved efficacy, which is in line with the patent requirements.

10: Chain removal tool

15: Chain disassembly and assembly

20: Subject

24: Slideway

25: Junction

251:Piercing

26: End plug

261: hinge

27: flange

28: Open mouth

30: Drive shaft

31: End

32: First threaded portion

34: Second thread portion

35: Central Department

36: Operation Department

40, 41: Sliders

42: First screw hole

44: Second screw hole

46: Jaw

50: Seat

51: Top pin screw hole

54: Alcove

55: Positioning block

57: Arrive at your seat

58: Recessed

60: Top pin

62: Screw part

63:Head

631: Operation Department

64: Sales Department

C1, C2: Axial

Claims (8)

A chain disassembly tool comprises: a main body having a first end and a second end; a slideway arranged in the main body, formed between the first end and the second end, and penetrating the first end and the second end; an opening along the axial direction of the slideway is arranged on the peripheral surface of one side of the main body, so that the slideway communicates with the outside; a connecting part is arranged at the center of the opening, connected to form two side walls of the slideway, and closes the center of the opening; two end plugs are respectively arranged at the two ends of the slideway; a driving shaft is arranged to rotate in place The main body is pivotally mounted in the main body in a movable manner; the two ends of the drive shaft are pivotally mounted in the two end plugs respectively and supported by the two end plugs; two slide blocks are slidably mounted in the slideway; the two slide blocks are each provided with a jaw, the two jaws are exposed from one side of the main body and are respectively located on the two sides of the connection part; when the drive shaft rotates in one direction, the two slide blocks are driven to move synchronously towards each other; when the drive shaft rotates in another direction, the two slide blocks are driven to move synchronously in the opposite direction; the two jaws are displaced respectively with the two slide blocks. A chain disassembly tool as described in claim 1, wherein: a first threaded portion and a second threaded portion are provided on the shaft of the drive shaft, and the first threaded portion and the second threaded portion are threads in opposite directions; the drive shaft is pivoted in the slideway; the two slide blocks are each provided with a first screw hole and a second screw hole, and the two screw holes have threads in opposite directions; the two slide blocks are respectively screwed to the first threaded portion and the second threaded portion of the drive shaft through the first screw hole and the second screw hole. The chain disassembly tool as described in claim 1, wherein: at least one first engaging portion is axially arranged on the peripheral surface of the slideway; the peripheral surfaces of the two slide blocks are each provided with at least one second engaging portion, and the second engaging portions of the two slide blocks are engaged with the first engaging portion of the slideway. A chain disassembly tool as described in claim 2, wherein: an annular flange is provided in the slideway and located at the connection portion; the shaft of the drive shaft has a central portion located between the first threaded portion and the second threaded portion; in the slideway, the central portion of the drive shaft is supported by the flange. A chain disassembly assembly, comprising: a chain disassembly tool as described in any one of claims 1 to 4; a seat, a recess and a stop, arranged on the main body; a top pin screw hole, penetrating the seat and connected to the recess; a recess, arranged in the stop, one end of the recess is connected to the recess, and the recess is aligned with the axial direction of the top pin screw hole; a top pin, having a screw rod, a head and a pin, respectively arranged at the two ends of the screw rod, the top pin is screwed to the top pin screw hole of the seat with the screw rod, and the pin faces the recess and the stop; when the top pin rotates, it moves into or out of the recess. The chain disassembly assembly as described in claim 5, wherein: the main body is provided with a coupling portion that can be coupled to other objects. The chain disassembly assembly as described in claim 5, wherein: the head portion is formed with a hinge portion for hinge connection to other objects. The chain disassembly assembly as described in claim 5, wherein: the periphery of the main body has a first side and a second side different from the first side; the opening is provided on the first side of the main body; the two jaws are exposed on the first side; the seat, the recess and the stop are provided on the second side of the main body; the axial direction of the top pin screw hole is parallel to the axial direction of the slideway.