JP3067044U - Chain exchange tool for motorcycles - Google Patents

Abstract

(57) [Problem] To provide a motorcycle chain exchange tool that can easily and reliably perform a motorcycle chain exchange by itself, has a simple shape and structure, and can be manufactured at low cost. SOLUTION: A substantially H-shaped replacement tool body as viewed from the front, comprising two opposed vertical plate portions and a horizontal plate portion connecting the two vertical plate portions, and two pin removal bolts. The main body of the replacement tool, comprising two pin fixing bolts, two pin caulking bolts, a press-fitting bolt, a press-fitting inner guide, a press-fitting outer guide, and a press-fitting outer guide fixing bolt. Of the two U-shaped portions formed by the horizontal plate portion and the two vertical plate portions, the one U-shaped portion is a chain cutting portion and a caulked portion, and the other U-shaped portion is A chain exchange tool for a motorcycle, which is a chain connection part.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a motorcycle chain changing tool, and its purpose is to make it possible to easily and surely change a chain of a motorcycle by one person, and to have a simple and inexpensive motorcycle having a simple shape and structure. It is to provide a chain exchange tool.

[0002]

[Prior art]

 Motorcycle chains need to be replaced about every 10,000 cycles because they deteriorate over time due to wear and the like during use. Usually, when a chain needs to be replaced, it is often brought to a store or the like and exchanged with a person at the store, but many people want to replace the chain themselves. Various chain exchange tools are commercially available for this purpose. However, conventionally marketed chain replacements are complicated and have a large number of parts, so the price must be somewhat high, and replacement of the chain requires several times the cost of replacing the chain. Situation, which had to be purchased, which placed a heavy burden on those who wanted to replace the chain themselves. In addition, with conventional chain replacement tools, it is necessary to remove the chain from the vehicle body (gear) and perform the replacement work in an unstable state where the chain sways swaying, which makes the chain replacement work troublesome. The workability was poor and required skill. In view of such circumstances, the inventor of the present application described in Utility Model Registration No. 3034302 that the shape and structure can be made simpler and cheaper than conventional products, and the chain replacement work can be easily performed by one person. It proposes a possible motorcycle chain changer.

[0003]

[Problems to be solved by the invention]

 However, although the chain replacement tool of Utility Model Registration No. 3034302 was extremely superior in both price and workability as compared with conventional commercial products, there is still room for improvement in workability. It had been. In other words, the chain replacement work is performed in two steps of cutting and connecting the chain, or in three steps of cutting, connecting and caulking, but the chain changing tool of Utility Model Registration No. 3034302 integrates all the work steps. Since it was configured to work in one space, it was necessary to remove all the bolts inserted every time the next process was started, and the work of removing and inserting the bolts was very troublesome.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problem of the prior art, and the invention according to claim 1 has two opposing vertical plate portions and a horizontal plate portion connecting the two vertical plate portions. A main body having a substantially H shape as viewed from the front, two pin removing bolts, two pin fixing bolts, two pin caulking bolts, a press fitting bolt, and a press fitting. A chain exchange tool for a motorcycle comprising an inner guide for press fitting, an outer guide for press-fitting, and a bolt for fixing the outer guide for press-fitting, which is opposite to each other formed by a horizontal plate part and two vertical plate parts of the main body of the changer. Of the two U-shaped portions oriented, one U-shaped portion is a chain cutting portion and a caulked portion, and the other U-shaped portion is a chain connecting portion. In one of the vertical plates, the pin removal bolt and the pin caulking bolt Two screw holes that can be screwed are provided in accordance with the pin interval of the chain, and the other vertical plate portion is provided with a screw hole that can be screwed with the pin fixing bolt at a position facing the two screw holes. The one U-shaped portion of the other U-shaped portion is provided with two depressions on a surface facing the other vertical plate portion, and the two depressions are provided on the other vertical plate portion. A screw hole screwable with the press-fitting bolt and a through-hole through which a guide pin of the outer guide for press-fitting can be inserted are provided at the same height position, and the front surface of the replacement tool body at substantially the same height as the through-hole. A screw hole into which the press-fitting outer guide fixing bolt can be screwed, and the press-fitting inner guide is a flat plate member provided with two through holes in accordance with the distance between the pins of the chain. The outer guide for press-fitting has a flat plate portion and the flat plate portion has a pin interval between chains. The flat plate portion is provided with a through hole through which the press-fitting bolt can be inserted, and the pin removing bolt has an outer diameter at its tip. Has a non-threaded portion having a diameter equal to or less than the diameter of the pin of the chain, and a spherical surface having a diameter larger than that of the recess at the end of the pin of the chain is formed at the tip of the pin caulking bolt. Motorcycle chain exchange tool.

According to a second aspect of the present invention, there is provided the motorcycle according to the first aspect, further comprising a caulking gauge having a notch for confirming an expansion diameter after caulking a pin end of the chain. Chain replacement tool The invention according to claim 3 is characterized in that the tip of the bolt for pin caulking has a flat shape, and a spherical surface is formed by burying a bearing sphere in the flat portion. The present invention relates to a motorcycle chain changing device according to 1 or 2. The invention according to claim 4 is characterized in that, in addition to the two bolts for pin removal, a non-threaded portion is provided with a bolt for pin removal having a length longer than the length of the chain pin. Item 4. A motorcycle chain changing tool according to any one of Items 1 to 3. The invention according to claim 5 is characterized in that the replacement tool body is formed with a screw hole penetrating substantially the center of the horizontal plate portion, and a rod-shaped handle having a screw portion that can be screwed into the screw hole. A motorcycle chain exchange tool according to any one of claims 1 to 4, wherein

[0006]

[Embodiment of the invention]

 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 and 2 are a left perspective view and a right perspective view, respectively, showing a replacement tool body (2) of the motorcycle chain replacement tool (1) according to the present invention. The exchange tool main body (2) is composed of two vertical plate portions (21) facing each other in parallel and a horizontal plate portion (22) connecting the two vertical plate portions to each other. It has an H shape. Of the two U-shaped portions formed by the two vertical plate portions (21) and the horizontal plate portion (22) of the exchange tool body (2), one U-shaped portion (23) is a chain. The cut portion and the caulked portion constitute the chain connection portion with another U-shaped portion (24).

One vertical plate portion (21 a) constituting one U-shaped portion (23) is provided with two screw holes (211) at intervals between the pins of the chain, and the other vertical plate is provided. The portion (21b) is provided with two screw holes (212) at positions opposite to the two screw holes (211). In one vertical plate portion (21c) constituting another U-shaped portion (24), two concave portions (213) are provided on a surface facing the other vertical plate portion (21d), and the other vertical plate portion (213) is provided. The plate portion (21d) is provided with a screw hole (214) and a through hole (215) at the same height position as the two concave portions (213). In addition, a screw hole (216) is provided on the front surface of the replacement tool main body at substantially the same height position as the through hole (215). Then, one vertical plate portion (21a) and one vertical plate portion (21c) continuously form one vertical plate portion, and another vertical plate portion (21b) and another vertical plate portion (21d) are formed. Another vertical plate is formed continuously.

[0008] A screw hole (221) is formed in the exchange tool body (2) so as to penetrate substantially the center of the horizontal plate portion (22).

FIG. 3 is a perspective view showing the press-fit inner guide (3) of the motorcycle chain exchanger (1) according to the present invention, and FIG. 4 is a cross-sectional view thereof. The press-fit inner guide (3) has a flat plate shape as shown in the figure, and is provided with two through holes (31) at intervals of the pins of the chain. Further, another through hole (32) is provided at an intermediate portion between these two through holes (31), and this through hole (32) has a tapered portion (321) as shown in FIG. It is preferable that the exchange tool main body (2) is made of metal and the press-fitting inner guide (3) is made of a magnet because the workability is excellent.

FIG. 5 is a perspective view showing the press-fit outer guide (4) of the motorcycle chain changing tool (1) according to the present invention. The press-fitting outer guide (4) is composed of a flat plate (41) and two guide pins (42) vertically erected on the flat plate (41) in accordance with the distance between the pins of the chain. A through hole (43) is provided at an intermediate position between the two guide pins (42) of the portion (41).

FIG. 6 is a side view showing the pin removing bolt (5) of the motorcycle chain changing tool (1) according to the present invention. The pin removing bolt (5) has a non-threaded portion (51) from the middle to the tip, and the outer diameter of the non-threaded portion (51) is slightly smaller than the diameter of the pin of the chain. The pin removing bolt (5) can be screwed into a screw hole (212) of the replacement tool body (2). In the present invention, in addition to the pin removing bolt (5) shown in FIG. 6, a pin removing bolt having a non-threaded portion (51) formed longer than the chain pin length as shown in FIG. It is good also as a chain exchange tool provided with (5).

FIG. 8 is a side view showing the pin fixing bolt (6) of the motorcycle chain exchanger (1) according to the present invention. The tip of the pin fixing bolt (6) has substantially the same diameter as the diameter of the pin of the chain. The combined length of the threaded part (61) and the non-threaded part (62) is equal to that of the replacement tool body (2). The length is substantially the same as the thickness of one vertical plate portion (21a).

FIG. 9 is a side view showing the press-in bolt (7) of the motorcycle chain changing tool (1) according to the present invention. The press-fitting bolt (7) has a non-threaded portion (71) at the tip, and the non-threaded portion (71) comes into contact with the tapered portion (321) of the through hole (32) of the press-fitting inner guide (3). It has such a shape. The press-in bolt (7) can be screwed into a screw hole (214) of the exchange tool body (2).

FIG. 10 is a side view showing the pin swaging bolt (8) of the motorcycle chain changing tool (1) according to the present invention. The pin caulking bolt (8) can be screwed into the screw hole (212) of the exchange tool main body (2), and its tip is flat, and this flat tip is attached to the pin end of the chain. A sphere (81) for a bearing having a diameter larger than that of the depression is embedded. By embedding the bearing sphere (81) of high hardness and extremely low surface roughness at the tip of the pin caulking bolt (8) in this way, the pin can be damaged during the pin caulking operation described later. It is possible to perform caulking smoothly without any problem and to prevent wear of the tip.

FIG. 11 is a front view showing a caulking gauge (9) of the motorcycle chain changing tool (1) according to the present invention. The caulking gauge (9) is a substantially rectangular flat plate-like member, and has two notches (91) formed at a long side thereof at predetermined intervals. The width of these cutouts (91) is set to the appropriate caulking diameter at the tip of the pin, and serves as a gauge for checking the expansion diameter after caulking the pin tip of the chain. The interval between the notches (91) is equal to the interval between the pins of the chain. The notch (91) may be provided on only one long side, or may be provided on both long sides. At this time, by setting the width and the interval of the notch portion (91) to be different on both long sides as shown in the drawing, the present invention can be applied to different types of motorcycle chains. In the present invention, it is also possible to adopt a configuration in which the notch (91) is provided on the long side of the press-fit inner guide (3).

Hereinafter, a method of using the motorcycle chain changing tool (1) according to the present invention will be described with reference to FIGS. First, a method of cutting a chain using the motorcycle chain exchange tool (1) according to the present invention will be described with reference to FIGS. When cutting the chain using the motorcycle chain exchange tool (1), first, as shown in FIG. 12, the chain (10) and the pin are attached to one U-shaped portion (23) of the exchange tool body (2). Set the extraction bolt (5) and the pin fixing bolt (6) shown in FIG. At this time, the tip of the pin removing bolt (5) and the tip of the pin fixing bolt (6) are brought into contact with the pin (11) of the chain.

Next, the pin fixing bolt (6) is rotated using a hex wrench or the like, and is retracted to a position about half the thickness of one vertical plate (21a) as shown in FIG. Then, from the state of FIG. 13, the two bolts for pin removal (5) shown in FIG. 6 are further tightened, and the pin (11) is removed from the joint (12) (see FIG. 14). If the pin (11) does not come out of the joint (12) well, the non-threaded portion (51) shown in FIG. 7 is replaced with the non-threaded portion (51) shown in FIG. By using the pin removing bolt (5) formed longer than the pin, the pin (11) can be completely removed as shown in FIG. In this case, the pin fixing bolt (6) needs to be completely removed as shown in the figure. When the pin (11) comes off the joint (12), the chain can be cut by loosening the pin removal bolt (5) and removing the joint (12).

Next, a method of connecting a chain using the motorcycle chain exchange tool (1) according to the present invention will be described with reference to FIGS. When connecting the chain using the motorcycle chain replacement tool (1), first, the chain is temporarily connected at the rear sprocket portion by a joint, and the replacement tool body (2) is shown in FIG. That is, the press-fitting outer guide (4) is inserted into the other U-shaped portion (24) of the exchange tool body (2), and the press-fitting inner guide (4) is inserted into the guide pin (41) of the press-fitting outer guide (4). Set the guide (3) and press-fit plate (13) in the inserted state. If there is an O-ring, the O-ring (14) is also set as shown. Then, the press-fitting outer guide fixing bolt (16) is screwed in and fixed while the tip of the press-fitting outer guide (4) is pushed firmly until it enters the pin tip recess (15) of the chain joint.

From the state shown in FIG. 16, the pin press-in bolts (7) are tightened, and the press-in plate (13) is fixed with the press-in inner guide (3). The press-in plate (13) is press-fitted into the pin (11) by pushing until it comes into contact with the surface (see FIG. 17). If the chain joint is a clip joint, the pin press-in bolt (7) is retracted, the chain (10) is removed from the replacement tool body (2), and the clip (17) is connected to the connecting portion as shown in FIG. ) In the direction of chain rotation, and finish the work.

When the chain joint is a caulking joint, the pin press-in bolt (7) is slightly loosened to remove the chain (10) from the other U-shaped portion (24) of the exchange tool body (2), and then As shown in FIG. 19, the chain (10) is set in one U-shaped portion (23) of the exchange tool body (2). By alternately tightening the two pin caulking bolts (8) from the state shown in FIG. 19, the head of the pin (11) is caulked to secure the press-fit plate (13) so that it does not come off from the pin (11). I do. At this time, since the tip of the pin caulking bolt (8) is flat, the head of the pin (11) can be prevented from being broken by excessive caulking. Finally, by aligning the notch (91) provided in the caulking gauge (9) with the head of the caulked pin, the caulked portion is sufficiently expanded so that the press-fitting plate does not come off the pin. Check to see if you're done.

As described above, according to the motorcycle chain exchanging tool (1) according to the present invention, the chain cutting operation and the caulking operation are performed by the single U-shaped portion (23), and the chain connection operation is performed by the other. Since the U-shaped portions (24) can be used separately, it is possible to reduce the number of times of inserting and removing the bolts, and it is possible to greatly improve work efficiency.

FIG. 20 is an external view showing a use state of the motorcycle chain changing tool (1) according to the present invention. When the chain is exchanged using the motorcycle chain exchange tool (1) according to the present invention, the chain (10) of the rear sprocket (18) of the vehicle is engaged with the exchange tool body (2) as shown in the figure. The chain can be replaced while it is fixed to the part where the chain is located. Therefore, it is possible to work reliably and easily in a stable state without performing the replacement work in an unstable state where the chain fluctuates, unlike the replacement work using a conventional commercially available chain replacement tool. It is possible.

In the motorcycle chain replacement (1) according to the present invention, as shown in FIG. 21, a screw hole (22) provided substantially at the center of the horizontal plate (22) of the body (2) of the chain replacement. When a rod-shaped handle (20) having a screw portion (201) that can be screwed into the screw hole (221) is screwed into 1), it is possible to work with the rod-shaped handle (20). Therefore, the workability is further improved. The rod-shaped handle (20) can be screwed from either side of the horizontal plate (22).

[0024]

[Effect of the invention]

 As described above, according to the motorcycle chain replacement according to the present invention, the chain cutting operation and the caulking operation are performed by one U-shaped portion, and the chain connecting operation is performed by the other U-shaped portion. Since it can be performed separately, the number of times of bolt removal and insertion is small, and work efficiency is extremely high. In addition, since the replacement of the chain can be performed while the replacement tool body is fixed to the chain and the rear gear of the chain, the replacement of the chain can be performed reliably and easily in a stable state. In addition, since the shape and structure of the chain exchange tool are simple, it can be manufactured easily and inexpensively, and there is no risk of confusion due to a wrong use method at the time of work. It is highly versatile because it can handle both caulking joints.

[Brief description of the drawings]

FIG. 1 is a left perspective view showing a replacement tool body of a motorcycle chain replacement tool according to the present invention.

FIG. 2 is a right perspective view showing a replacement tool body of the motorcycle chain replacement tool according to the present invention.

FIG. 3 is a perspective view showing the press-fit inner guide of the motorcycle chain exchanger according to the present invention;

FIG. 4 is a cross-sectional view showing the press-fit inner guide of the motorcycle chain exchanger according to the present invention.

FIG. 5 is a perspective view showing the press-fitting outer guide of the motorcycle chain exchanger according to the present invention.

FIG. 6 is a side view showing the pin removing bolt of the motorcycle chain changing tool according to the present invention.

FIG. 7 is a side view showing the pin removing bolt of the motorcycle chain changing tool according to the present invention.

FIG. 8 is a side view showing the pin fixing bolt of the motorcycle chain changing tool according to the present invention.

FIG. 9 is a side view of the press-fitting bolt of the motorcycle chain changing tool according to the present invention.

FIG. 10 is a side view showing the pin swaging bolt of the motorcycle chain changing tool according to the present invention.

FIG. 11 is a front view showing the caulking gauge of the chain exchange tool for a motorcycle according to the present invention.

FIG. 12 is an explanatory diagram of a chain cutting method using the motorcycle chain exchange tool according to the present invention.

FIG. 13 is an explanatory view of a chain cutting method using the motorcycle chain exchange tool according to the present invention.

FIG. 14 is an explanatory diagram of a chain cutting method using the motorcycle chain exchange tool according to the present invention.

FIG. 15 is an explanatory view of a chain cutting method using the motorcycle chain exchange tool according to the present invention.

FIG. 16 is an explanatory diagram of a chain connecting method using the motorcycle chain exchange tool according to the present invention.

FIG. 17 is an explanatory view of a chain connecting method using the motorcycle chain exchange tool according to the present invention.

FIG. 18 is an explanatory view of a chain connecting method using the motorcycle chain exchange tool according to the present invention.

FIG. 19 is an explanatory view of a chain connecting (caulking) method using the motorcycle chain exchange tool according to the present invention.

FIG. 20 is an external view showing a use state of the motorcycle chain exchanger according to the present invention.

FIG. 21 is a diagram showing a method of attaching the rod-shaped handle to the replacement tool body of the motorcycle chain replacement tool according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motorcycle chain exchange tool 2 Exchange tool main body 21 Vertical plate part 22 Horizontal plate part 23 One U-shaped part 24 Another U-shaped part 21a One vertical plate part 21b One U-shaped part 21b One U-shaped part Another vertical plate portion 21c of the U-shaped portion 21c One vertical plate portion of the other U-shaped portion 21d Another vertical plate portion of the other U-shaped portion 211 Screw hole 212 Screw hole 213 Depressed portion 214 Screw hole 215 Through hole 216 Screw hole 221 Screw hole 3 Press-fit inner guide 31 Through hole 32 Through hole 4 Press-fit outer guide 41 Flat plate part 42 Guide pin 43 Through hole 5 Pin removing bolt 51 Non-thread part 6 Pin fixing bolt 62 Non-thread part 7 Pin Press-in bolt 71 Non-threaded part 8 Pin caulking bolt 81 Sphere 9 Caulking gauge 91 Notch 10 Chain 11 Pin 20 Bar-shaped handle 201 Screw part

Claims (5)

[Utility model registration claims] 1. A substantially H-shaped replacement tool body as viewed from the front, comprising two opposed vertical plate portions and a horizontal plate portion connecting the two vertical plate portions, and two pin removing bolts. A motorcycle chain comprising: two pin fixing bolts; two pin caulking bolts; a press fitting bolt; a press fitting inner guide; a press fitting outer guide; and a press fitting outer guide fixing bolt. An exchange tool, wherein, of two opposite U-shaped portions formed by a horizontal plate portion and two vertical plate portions of the exchange device main body, one U-shaped portion is a chain cutting portion and a caulking portion. The other U-shaped portion is a chain connecting portion, and one vertical plate portion of the one U-shaped portion is provided with two pins that can be screwed with the pin removing bolt and the pin caulking bolt. Screw holes are provided according to the chain pin interval, and other vertical plate parts A screw hole capable of being screwed with the pin fixing bolt is provided at a position opposed to the two screw holes, and one vertical plate portion of the other U-shaped portion has another vertical plate portion. Are provided with two depressions on the opposite surface, and the other vertical plate is provided with the two depressions.
A screw hole screwable with the press-fitting bolt and a through-hole through which a guide pin of the outer guide for press-fitting can be inserted are provided at the same height position as the two recessed portions, and are exchanged at substantially the same height as the through-hole. A screw hole into which the press-fitting outer guide fixing bolt can be screwed is provided at the front of the tool body, and the press-fitting inner guide is a flat plate member provided with two through holes in accordance with a chain pin interval. The press-fitting outer guide is composed of a flat plate portion and two guide pins erected on the flat plate portion in accordance with the distance between the pins of the chain, and the press-fitting bolt is provided on the flat plate portion. An insertable through-hole is provided.The pin removal bolt has a non-threaded portion having an outer diameter equal to or less than a chain pin diameter at a tip, and a tip of the pin caulking bolt has Chain pin tip A chain replacement tool for a motorcycle, wherein a spherical surface having a diameter larger than that of a depression is formed. 2. The motorcycle chain changing tool according to claim 1, further comprising a caulking gauge having a notch for confirming an expansion diameter after caulking a chain pin tip. 3. The pin crimping bolt according to claim 1, wherein a tip end of the bolt is flat, and a spherical surface is formed by burying a bearing sphere in the flat portion. Motorcycle chain replacement tool. 4. In addition to the two pin removing bolts,
2. The non-threaded portion is provided with a pin removing bolt formed longer than the length of the pin of the chain.
The chain exchange tool for a motorcycle according to any one of claims 1 to 3. 5. The exchange tool main body is provided with a screw hole penetrating substantially the center of the horizontal plate portion, and a rod-shaped handle having a screw portion that can be screwed into the screw hole. The motorcycle chain exchange tool according to any one of claims 1 to 4, wherein: