JP2016137770A - Connector and power transmission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector and a power transmission device capable of reducing weight, and capable of improving workability.SOLUTION: A traction device 5 connects a vehicle body 3 and a carriage 4 by a link member 6. The link member 6 connects a connection member 10A and a connection member 10B for transmitting a load between the vehicle body 3 and the carriage 4. The link member 6 is fiber-reinforced plastic in a part. As such the fiber- reinforced plastic, for example, carbon fiber-reinforced plastic is desirable. The link member 6 joins a fitting part 6g on the metallic holding part 6a, 6b side and a fitting part 6h on the fiber-reinforced plastic connection part 6e side by an adhesive. The connection part 6e is formed in a predetermined shape by heating, for example, a thermosetting resin by laminating a fiber-reinforced plastic molding material (a prepreg) uniformly impregnated into a textile of carbon fiber.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a connecting device that connects a first member and a second member by a link member, and a power transmission device that transmits power by a transmission member.

  In railway vehicles, a traction device that transmits longitudinal force such as driving force and braking force between a vehicle body and a carriage is used. As such a towing apparatus, there is a one-link type towing apparatus in which a bogie frame of a bogie and a vehicle body are connected by a single tension rod via a rubber bush. A conventional single-link towing device is connected to a cylindrical main body, an outer cylinder integrally formed on both ends of the main body, and a center pin extending downward from the vehicle body, and is inserted into one outer cylinder. A mandrel, a mandrel connected to the bogie frame of the dolly and inserted into the other outer cylinder, a rubber bush fitted between the outer cylinder and the mandrel, and the like (see, for example, Patent Document 1). In such a conventional single-link type towing device, the vertical and horizontal movements between the vehicle body and the carriage and the rotational movement are allowed and the longitudinal movement is restrained, so that the driving force and the braking force are reliably established between the vehicle body and the carriage. Is communicating to.

JP 2010-285071 A

  In a conventional single link type towing apparatus, a structural material composed of a cylindrical main body and a pair of outer cylinders is made of iron, and the cylindrical main body is a carbon steel pipe (STKM) for machine structure. For this reason, the conventional single-link type towing device is heavy and inferior in workability, and becomes a burden on workers who perform assembly work and disassembly work, and the weight of the entire vehicle increases, which is necessary for vehicle operation. There is a problem that the amount of energy increases, the vibration of the carriage becomes large, and the ride comfort is lowered. Further, the conventional single-link type towing device needs to weld and integrate the main body portion and the pair of outer cylinders, and there is a problem that welding work becomes a burden on the worker. Furthermore, since the conventional single link type towing device is made of iron, it has a high rigidity, and there is a problem that the impact between the vehicle body and the cart cannot be sufficiently reduced.

  An object of the present invention is to provide a coupling device and a power transmission device that can reduce weight and improve workability.

The present invention solves the above-mentioned problems by the solving means described below.
In addition, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this embodiment.
The invention of claim 1 is a connecting device for connecting the first and second members (4, 3) by a link member (6) as shown in FIGS. 1 to 5, 14 and 15. A connecting device (5) characterized in that a part of the link member is a fiber reinforced plastic.

  According to the second aspect of the present invention, as shown in FIGS. 9, 10, 19 to 21, 24 and 25, the first and second members (4, 3) are connected by a link member (6). A coupling device (5), wherein all of the link members are made of fiber reinforced plastic.

  According to a third aspect of the present invention, in the connecting device according to the first aspect, as shown in FIGS. 2, 4 and 5, the link member (6) is a first elastic member on the first member side. A connecting portion (6e) for connecting the first holding portion (6a) holding (7A) and the second holding portion (6b) holding the second elastic member (7B) on the second member side. Is a fiber reinforced plastic.

  According to a fourth aspect of the present invention, in the connecting device according to the second aspect, as shown in FIGS. 9, 10, 14, 15, 19, 20, 24 and 25, the link member (6 ) Is a first holding part for holding the first elastic member on the first member side, a second holding part for holding the second elastic member on the second member side, and the first holding part. The connecting device connecting the second holding portion and the second holding portion is a fiber reinforced plastic.

  According to a fifth aspect of the present invention, in the connecting device according to the third or fourth aspect, as shown in FIGS. 6, 11, and 16, the link member includes the first and second holding portions. The connecting device is characterized in that the connecting portion is joined by an adhesive.

  According to a sixth aspect of the present invention, in the connecting device according to the fifth aspect, as shown in FIG. 6, the link member is connected to the fitting portion (6 g) on the first and second holding portions side and the connected portion. The coupling device is characterized in that the part-side fitting part (6h) is joined by an adhesive.

  According to a seventh aspect of the present invention, in the connecting device according to the fourth or fifth aspect, as shown in FIGS. 11 (F) and 16 (F), the link member includes the first and second links. The holding device and the connecting portion are joined by a joining material (6k).

  According to an eighth aspect of the present invention, in the connecting device according to the fourth aspect, as shown in FIGS. 19, 20, 24 and 25, the link member includes the first and second holding portions and the The connecting device is characterized in that the connecting portion is integrally formed.

  According to a ninth aspect of the present invention, in the connecting device according to the eighth aspect, as shown in FIGS. 19 and 20, the link member is hung in parallel with the first elastic member and the second elastic member. The connecting device is characterized in that the first and second holding portions and the connecting portion are integrally formed so as to be in a closed state.

  According to a tenth aspect of the present invention, in the connecting device according to the eighth or ninth aspect, as shown in FIGS. 24 and 25, the link member includes the first elastic member and the second elastic member. The connecting device is characterized in that the first and second holding portions and the connecting portion are integrally formed so as to be in a state of being cross-hung.

  According to an eleventh aspect of the present invention, in the connecting device according to the ninth or tenth aspect, as shown in FIGS. 19, 20, 24, and 25, the link member includes the first and second links. The coupling device is characterized by including a fixing portion (17) for fixing the elastic member to the link member.

  According to a twelfth aspect of the present invention, in the connecting device according to any one of the third to eleventh aspects, as shown in FIGS. 14 and 15, the link member includes the first and second links. The outer peripheral part (16a) of the metal inner cylinder (16A, 16B) is joined to the inner peripheral part of the holding part, and the outer peripheral part (8a) of the elastic member is joined to the inner peripheral part (16b) of the metal inner cylinder. Is a connecting device characterized by joining.

  According to a thirteenth aspect of the present invention, in the connecting device according to any one of the first to twelfth aspects, as shown in FIGS. 1 and 2, the link member (6) is the first member. Is a cart (4), and when the second member is a vehicle body (3), the tension of the one-link towing device that connects the vehicle body and the cart via rubber cylinders (8A, 8B) It is a coupling device (5) characterized by being a stick.

  The invention of claim 14 is the connecting device according to any one of claims 1 to 13, wherein, as shown in FIG. 8, the link member is a fiber in the fiber-reinforced plastic. It is the connection apparatus characterized by being oriented in the length direction (A).

  A fifteenth aspect of the present invention is the connecting device according to any one of the first to fourteenth aspects, wherein the fiber reinforced plastic is a carbon fiber reinforced plastic.

  The invention of claim 16 is a power transmission device for transmitting power by means of a transmission member (24) as shown in FIGS. 28 and 29, wherein a part or all of the transmission member is a fiber reinforced plastic. This is a characteristic power transmission device (22).

  According to a seventeenth aspect of the present invention, in the power transmission device according to the sixteenth aspect, the transmission member includes a drive shaft (20a) driven by the power device (19) and a driven driven by power from the drive shaft. The power transmission device is a propulsion shaft that couples the shaft (21a).

According to an eighteenth aspect of the present invention, in the power transmission device according to the seventeenth aspect, as shown in FIG. 31, the transmission member includes fibers in the fiber reinforced plastic in a twist direction (B ₁ , B _{2 of the} transmission member). ).

  The invention according to claim 19 is the power transmission device according to any one of claims 16 to 18, wherein the fiber reinforced plastic is a carbon fiber reinforced plastic. .

  According to this invention, weight reduction can be achieved and workability can be improved.

1 is a side view schematically showing a railway vehicle including a coupling device according to a first embodiment of the present invention. It is a side view of the connecting device concerning a 1st embodiment of this invention. It is the front view seen from the III direction of FIG. It is a top view of the connecting device concerning a 1st embodiment of this invention. It is sectional drawing which shows the state cut | disconnected by the VV line | wire of FIG. It is sectional drawing which expands and shows VI part of FIG. It is process drawing of the manufacturing method of the coupling device which concerns on 1st Embodiment of this invention. It is a schematic diagram for demonstrating the connection part manufacturing process of the manufacturing method of the connection apparatus which concerns on 1st Embodiment of this invention, (A) is a schematic diagram which shows a lamination process, (B) shows a compression process. It is a schematic diagram, (C) is a schematic diagram which shows a hardening process. It is a side view of the connecting device concerning a 2nd embodiment of this invention. It is sectional drawing of the coupling device which concerns on 2nd Embodiment of this invention. It is sectional drawing which expands and shows the XI part of FIG. 9, (A)-(F) is sectional drawing which shows a joining form. It is process drawing of the manufacturing method of the coupling device which concerns on 2nd Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the coupling device which concerns on 2nd Embodiment of this invention, (A) is a schematic diagram of a lamination process, (B) is a schematic diagram of a compression process, (C ) Is a schematic diagram of the curing step. It is a side view of the connecting device concerning a 3rd embodiment of this invention. It is sectional drawing of the coupling device which concerns on 3rd Embodiment of this invention. It is sectional drawing which expands and shows the XIV part of FIG. 14, (A)-(F) is sectional drawing which shows a joining form. It is process drawing of the manufacturing method of the coupling device which concerns on 4th Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the coupling device which concerns on 4th Embodiment of this invention, (A) is a schematic diagram of a lamination process, (B) is a schematic diagram of a compression process, (C ) Is a schematic diagram of the curing step. It is a side view of the connecting device concerning a 4th embodiment of this invention. It is sectional drawing of the coupling device which concerns on 4th Embodiment of this invention. It is sectional drawing which shows the state cut | disconnected by the XXI-XXI line | wire of FIG. It is process drawing of the manufacturing method of the coupling device which concerns on 4th Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the coupling device which concerns on 4th Embodiment of this invention, (A) is a schematic diagram of a link member manufacturing process, (B) is a schematic diagram of a fixing process, (C) is a schematic diagram of a joining process. It is a side view of the connecting device concerning a 5th embodiment of this invention. It is sectional drawing of the coupling device which concerns on 5th Embodiment of this invention. It is process drawing of the manufacturing method of the coupling device which concerns on 5th Embodiment of this invention. It is the schematic for demonstrating the manufacturing method of the coupling device which concerns on 5th Embodiment of this invention, (A) is a schematic diagram of a link member manufacturing process, (B) is a schematic diagram of a fixing process, (C) is a schematic diagram of a joining process. It is a side view showing roughly a rail car provided with a connection device concerning a 6th embodiment of this invention. It is a side view which fractures | ruptures and shows a part of power transmission device which concerns on 6th Embodiment of this invention. It is process drawing of the manufacturing method of the power transmission device which concerns on 6th Embodiment of this invention. It is a schematic diagram for demonstrating the manufacturing method of the power transmission device which concerns on 6th Embodiment of this invention, (A) is a schematic diagram of a lamination process, (B) is a schematic diagram of a compression process, ( C) is a schematic diagram of a curing process.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
A track 1 shown in FIG. 1 is a passage (track) on which the vehicle 2 travels. The track 1 includes a rail 1a that supports and guides the wheels 4a of the vehicle 2 and causes the vehicle 2 to travel. The vehicle 2 is a railway vehicle that travels along the track 1. The vehicle 2 is, for example, a train, a diesel car or a locomotive. The vehicle 2 includes a vehicle body 3 shown in FIG. 1, a carriage 4, a towing device 5 shown in FIGS. 1 to 5, and the like. The vehicle body 3 shown in FIG. 1 is a structure for transporting loads such as passengers or cargo. As shown in FIG. 2, the vehicle body 3 includes a vehicle body side connection portion 3 a connected to the connection member 10 </ b> B of the traction device 5. The vehicle body side connection portion 3 a is a floor structure (framework) of the vehicle body 3. It is fixed to the center pin that is attached to. A cart 4 shown in FIG. 1 is a device that travels while supporting a vehicle body 3. As shown in FIG. 1, the carriage 4 is fixed to the carriage frame 4 b as shown in FIG. 2, as shown in FIG. 1, wheels 4 a that are in rolling contact with the rail 1 a, a carriage frame 4 b that is a main component of the carriage 4. A cart side coupling portion 4c coupled to the coupling members 10A and 10B of the device 5 is provided.

  A traction device 5 shown in FIGS. 1 to 5 is a device that connects a vehicle body 3 and a carriage 4 by a link member 6. The towing device 5 connects the vehicle body 3 and the cart 4 via elastic members 7 </ b> A and 7 </ b> B, and transmits a force in the front-rear direction between the vehicle body 3 and the cart 4. The traction device 5 shown in FIGS. 1 to 5 is a single-link type traction device that connects the vehicle body 3 and the cart 4 via a rubber cylinder by a single traction link. The towing device 5 permits vertical movement, horizontal movement, and rotational movement between the vehicle body 3 and the carriage 4 and restrains the longitudinal movement therebetween. The traction device 5 includes a link member 6 shown in FIGS. 1 to 5, elastic members 7A and 7B shown in FIGS. 2, 4, and 5, outer cylinders 9A and 9B shown in FIGS. 4 and FIG. 5 and the fixing members 11A and 11B shown in FIG.

  The link member 6 shown in FIGS. 1 to 5 is a member that connects the connecting member 10 </ b> A and the connecting member 10 </ b> B in order to transmit a load between the vehicle body 3 and the carriage 4. The link member 6 transmits longitudinal force such as driving force and braking force between the vehicle body 3 and the carriage 4. The link member 6 is a tension bar (towing link) of a single link type towing device, and is a connecting pipe having a rod-like appearance and constitutes a main body portion (single link main body) of the towing device 5. A part of the link member 6 is a fiber reinforced plastic (FRP). In the link member 6, the fibers in the fiber reinforced plastic are mainly oriented in the length direction of the link member 6 so as to have strength against the longitudinal force acting on the link member 6. Here, the fiber reinforced plastic is a composite material in which a fiber such as glass fiber is put in the plastic to improve the strength. The fiber reinforced plastic uses, for example, a thermosetting resin such as unsaturated polyester resin, epoxy resin, polyamide resin or phenol resin, or a thermoplastic resin such as polypropylene, polyamide or methyl methacrylate as a base material, glass fiber, Carbon fiber, boron fiber, aramid fiber, polyethylene fiber, metal wire, metal mesh or the like is used as a reinforcing material. As such a fiber reinforced plastic, for example, a carbon fiber reinforced plastic (CFRP) in which the base material is mainly epoxy resin and the reinforcing material is carbon fiber is preferable. The link member 6 joins the holding portions 6a and 6b and the connecting portion 6e with an adhesive, and the fitting portion 6g on the holding portions 6a and 6b side and the fitting portion 6h on the connecting portion 6e side with an adhesive. Join. The link member 6 includes holding portions 6a and 6b shown in FIGS. 2, 4 and 5, bushing holes 6c and 6d shown in FIGS. 2 and 5, and a connecting portion 6e shown in FIGS. 6 is provided with an adhesive layer 6f shown in FIG.

  The holding portion 6a shown in FIGS. 2, 4, and 5 is a portion that holds the elastic member 7A, and the holding portion 6b is a portion that holds the outer cylinder 9B, the elastic member 7B, and the connecting member 10B. As shown in FIG. 2, the holding portions 6a and 6b are respectively formed at both ends of the link member 6. The holding portion 6a is formed on the cart 4 side of the link member 6, and the holding portion 6b is the link. The member 6 is formed on the vehicle body 3 side. The holding portions 6a and 6b are, for example, metal cylindrical members made of steel or the like, and are formed into a predetermined shape by casting or machining. As shown in FIGS. 5 and 6, the holding portions 6 a and 6 b include a fitting portion 6 g. The fitting portion 6g is a portion that fits with the fitting portion 6h on the connecting portion 6e side. As shown in FIG. 5, the fitting portion 6g is held by cutting the entire outer periphery of the columnar protruding portion protruding from the outer peripheral portion of the holding portion 6a to a predetermined depth and width by machining or the like. It is the step part formed in concave shape in the outer peripheral surface of the part 6a. As shown in FIG. 6, the fitting portion 6g is formed with a depth substantially equal to the thickness of the connecting portion 6e. The bush holes 6c and 6d shown in FIG. 2 and FIG. 5 are through-holes penetrating both ends of the link member 6. The bush hole 6c is formed in the holding portion 6a, and the bush hole 6d is formed in the holding portion 6b. Has been.

  The connection part 6e shown in FIG.2, FIG4 and FIG.5 is a part which connects the holding | maintenance part 6a and the holding | maintenance part 6b. The connecting portion 6 e is a cylindrical portion that constitutes the main body portion of the link member 6. Unlike the holding portions 6a and 6b, the connecting portion 6e is made of fiber reinforced plastic. For example, as defined in JIS K 6900, the connecting portion 6e is formed into a predetermined shape by laminating and heating a prepreg which is a mixture of resin, additives, and a woven or filamentary reinforcing material. It is formed. As shown in FIGS. 5 and 6, the connecting portion 6e includes a fitting portion 6h. The fitting portion 6h is a portion that fits with the fitting portion 6g on the holding portions 6a and 6b side. As shown in FIG. 5, the fitting portion 6h is formed at both ends of the connecting portion 6e so that the inner peripheral surface of the fitting portion 6h is joined to the outer peripheral surface of the fitting portion 6g. The adhesive layer 6f shown in FIG. 6 is a part that adheres the holding parts 6a and 6b and the connecting part 6e. The adhesive layer 6f is formed, for example, by applying a reactive adhesive such as an epoxy resin between the fitting part 6g on the holding parts 6a and 6b side and the fitting part 6h on the connecting part 6e side. Yes.

  The elastic member 7A shown in FIGS. 2, 4 and 5 is a member that alleviates vibration transmitted between the bushing hole 6c of the link member 6 and the outer peripheral portion 10b of the connecting member 10A. The elastic member 7B is a member that reduces vibration transmitted between the bushing hole 6d of the link member 6 and the outer peripheral portion 10b of the connecting member 10B. As shown in FIG. 2, the elastic member 7A is disposed between the connecting member 10A on the cart 4 side and the outer cylinder 9A, and the elastic member 7B is interposed between the connecting member 10B on the vehicle body 3 side and the outer cylinder 9B. Is arranged. The elastic members 7 </ b> A and 7 </ b> B constitute a buffer rubber portion (single link rubber) of the traction device 5. The elastic members 7A and 7B have the same structure, and the rubber cylinders 8A and 8B shown in FIGS. 2, 4 and 5, the outer cylinders 9A and 9B shown in FIGS. 2 and 5, and FIGS. And connecting members 10A and 10B shown in FIG.

  The rubber cylinder 8A is a member that alleviates the vibration transmitted between the outer cylinder 9A and the connecting member 10A and also reduces the impact acting between them. The rubber cylinder 8B mitigates vibrations transmitted between the outer cylinder 9B and the connecting member 10B and also mitigates the impact acting between them. The rubber cylinders 8A and 8B are rubber bushes having a soft property in a twisting direction that is a rotational displacement around an axis and a twisting direction that is a rotational displacement perpendicular to the axis, and a hard property in tensile and compression in the axial direction. . The rubber cylinders 8A and 8B are formed in a substantially cylindrical shape by pouring rubber between the inner peripheral part 9b of the outer cylinders 9A and 9B and the outer peripheral part 10b of the connecting members 10A and 10B. The inner peripheral portion 9b and the outer peripheral portion 10b of the connecting members 10A and 10B are vulcanized and joined together. The rubber cylinders 8A and 8B include an outer peripheral portion 8a and an inner peripheral portion 8b as shown in FIGS. The outer peripheral part 8a is a part joined to the inner peripheral part 9b of the outer cylinders 9A, 9B, and the inner peripheral part 8b is a part joined to the outer peripheral part 10b of the connecting members 10A, 10B.

  The outer cylinder 9A shown in FIGS. 2 and 5 is a member inserted into the bushing hole 6c of the link member 6, and the outer cylinder 9B is a member inserted into the bushing hole 6d of the link member 6. The outer cylinders 9A and 9B are formed, for example, by machining a carbon steel pipe for machine structure and the like, both of which have the same structure and accommodate the rubber cylinders 8A and 8B, respectively. The outer cylinders 9A and 9B include an outer peripheral part 9a that is press-fitted into the bushing holes 6c and 6d and fits into the bushing holes 6c and 6d, and an inner peripheral part 9b that is joined to the outer peripheral part 8a of the rubber cylinders 8A and 8B. ing.

  A connecting member 10A shown in FIGS. 2, 4 and 5 is a member connected to the carriage 4, and a connecting member 10 </ b> B is a member connected to the vehicle body 3. As shown in FIG. 2, the connecting member 10A is connected to the carriage side connecting portion 4c, and the connecting member 10B is connected to the vehicle body side connecting portion 3a. The connecting members 10A and 10B are rod-shaped members (mandrel), and are accommodated in the inner peripheral portion 8b in a state of being joined to the inner peripheral portion 8b of the rubber cylinders 8A and 8B. The connecting members 10A and 10B are formed by processing, for example, carbon steel for machine structure into a predetermined shape. Each of the connecting members 10A and 10B has the same structure, the shaft portion 10a shown in FIGS. 2, 4, and 5, the outer peripheral portion 10b shown in FIGS. 2 and 5, and the mounting portion shown in FIGS. 10c and mounting holes 10d shown in FIGS. 2 and 4 are provided.

  The shaft portion 10a shown in FIGS. 2, 4 and 5 is a portion accommodated in the rubber cylinders 8A and 8B, and has a substantially circular cross section. The outer peripheral part 10b shown in FIG.2 and FIG.5 is a part joined with the inner peripheral part 8b of rubber cylinder 8A, 8B. The outer peripheral part 10b is joined integrally with the inner peripheral part 8b of the rubber cylinders 8A and 8B, so that when a load is applied in the axial direction of the connecting members 10A and 10B, the shaft part 10a is removed from the rubber cylinders 8A and 8B. To prevent it from coming out. The attachment part 10c shown in FIGS. 2-4 is a part for attaching fixing member 11A, 11B. The attachment portion 10c is formed in a plate shape integrally with the shaft portion 10a, and is formed with a predetermined length from both ends of the shaft portion 10a. The mounting hole 10d shown in FIGS. 2 and 4 is a through hole formed at the end of the shaft portion 10a.

  The fixing member 11A shown in FIGS. 2 to 4 is a member that fixes the connecting member 10A to the cart 4, and the fixing member 11B is a member that fixes the connecting member 10B to the vehicle body 3. The fixing member 11A fixes the connecting member 10A to the carriage side connecting portion 4c in a detachable manner, and the fixing member 11B fixes the connecting member 10B to the vehicle body side connecting portion 3a in a removable manner. The fixing members 11A and 11B are, for example, fastening bolts having a bolt head portion 11a, and are attached to the attachment portion 10c so as to sandwich a washer between the bolt head portion 11a and the attachment portion 10c. 11 A of fixing members insert a male screw part in the attachment hole 10d of 10 A of connecting members shown in FIGS. 2-4, and the front-end | tip part of this male screw part is screwed in the female screw part of the truck side connection part 4c. In the fixing member 11B, the male screw portion is inserted into the mounting hole 10d of the connecting member 10B, and the leading end portion of the male screw portion is screwed into the female screw portion of the vehicle body side connecting portion 3a.

Next, a method for manufacturing the coupling device according to the first embodiment of the present invention will be described.
The manufacturing method # 100 shown in FIG. 7 is a manufacturing method of the traction device 5 that connects the vehicle body 3 and the cart 4 by the link member 6. Manufacturing method # 100 includes link member manufacturing process # 200, elastic member manufacturing process # 300, joining process # 400, and the like. A cored bar (mandrel) 12 shown in FIG. 8 is a mold used when the connecting portion 6e is molded. The metal core 12 is a metal columnar member having a predetermined length and an outer diameter, and has an outer diameter that is the same as the inner diameter of the connecting portion 6e. The prepreg sheet 13 is a sheet-like fiber reinforced plastic molding material. The prepreg sheet 13 is cut into a predetermined width and length. The heat-shrink tape 14 is a member that causes the prepreg sheet 13 to adhere to the cored bar 12. The heat-shrinkable tape 14 is contracted by being heated and presses the prepreg sheet 13 against the core metal 12 to push out bubbles between the prepreg sheet 13 and the core metal 12. The heat shrink tape 14 is a tape made of a thermoplastic resin such as polypropylene or polyethylene terephthalate, for example. The curing device 15 is a device that cures the prepreg sheet 13. The curing device 15 is a curing furnace that heats and cures the prepreg sheet 13 while the prepreg sheet 13 is wound around the cored bar 12.

  The link member manufacturing process # 200 shown in FIG. 7 is a process of manufacturing a part of the link member 6 with fiber reinforced plastic. The link member manufacturing process # 200 includes a holding part manufacturing process # 201, a connecting part manufacturing process # 202, a joining process # 203, and the like. The holding part manufacturing process # 201 is a process of manufacturing the holding part 6a that holds the elastic member 7A on the cart 4 side and the holding part 6b that holds the elastic member 7B on the vehicle body 3 side. In the holding part manufacturing step # 201, metal holding parts 6a and 6b are manufactured. In the holding part manufacturing step # 201, for example, when the holding parts 6a and 6b are manufactured by casting, the holding parts 6a and 6b in which the fitting parts 6g are formed are manufactured by pouring molten metal into the mold, and the holding part When manufacturing 6a and 6b by machining, the holding parts 6a and 6b in which the fitting part 6g was formed are manufactured by cutting of steel materials.

  The connecting part manufacturing process # 202 is a process of manufacturing the connecting part 6e that connects the holding part 6a and the holding part 6b with fiber reinforced plastic. In the connecting part manufacturing step # 202, for example, a prepreg is wound around a cylindrical mold and thermally cured in a curing furnace, and the cured prepreg is separated from the mold by a decentering machine to manufacture a pipe-shaped member. The connecting portion 6e is manufactured by the winding method. In connection part manufacturing process # 202, as shown to FIG. 8 (A), after apply | coating a mold release agent to the outer peripheral surface of the metal core 12, in the lamination process, the prepreg sheet 13 is wound around the outer peripheral surface of the metal core 12. Laminate at a predetermined thickness.

  Next, in connection part manufacturing process # 202, as shown in FIG.8 (B), the heat-shrink tape 14 is wound around the outer peripheral surface of the prepreg sheet 13 wound around the outer peripheral surface of the metal core 12 in a compression process. Here, the carbon fiber has a strong anisotropy against stress acting in the fiber direction (orientation direction (0 °)), but weak against stress acting in the fiber orthogonal direction (90 °). For this reason, in connection part manufacturing process # 202, the fiber in a fiber reinforced plastic is orientated mainly in the length direction of the link member 6. FIG. In the connecting part manufacturing step # 202, for example, the fiber direction of the carbon fiber is 0 °, ± 45 ° with respect to the direction of the force acting in the front-rear direction acting on the link member 6 (A direction shown in FIG. 8A). The prepreg sheet 13 is wound around the outer peripheral surface of the core metal 12 while changing the fiber direction so as to intersect at 90 °. For example, the prepreg sheet 13 is wound around the outer peripheral surface of the core metal 12 so that the lamination ratio in the fiber direction of the prepreg sheet 13 is 75% at 0 °, 12% at ± 45 °, and 13% at 90 °.

  Next, in the connecting part manufacturing process # 202, as shown in FIG. 8C, in the curing process, the cored bar 12 is placed in the curing device 15 in a state where the heat shrink tape 14 is wound around the outer peripheral surface of the prepreg sheet 13. And the cored bar 12 is heated. As a result, in the connecting part manufacturing step # 202, the heat-shrinkable tape 14 is contracted, the prepreg sheet 13 and the cored bar 12 are in close contact, and air bubbles such as air existing between them are discharged. Next, in connection part manufacturing process # 202, after the prepreg sheet 13 is heated and cured, the cored bar 12 is taken out from the curing device 15, the heat shrink tape 14 is removed, and the cured prepreg sheet 13 is removed from the cored bar 12. . Finally, in the connecting part manufacturing step # 202, the cured tubular prepreg sheet 13 is cut into a predetermined length, and the connecting part 6e shown in FIGS. 2, 4, and 5 is manufactured.

  The joining process # 203 shown in FIG. 7 is a process of joining the holding parts 6a and 6b and the connecting part 6e with an adhesive. In the joining step # 203, as shown in FIG. 6, the fitting portion 6g on the holding portions 6a and 6b side and the fitting portion 6h on the connecting portion 6e side are joined with an adhesive. In the bonding step # 203, as shown in FIG. 6, an adhesive is applied between the fitting portion 6g on the holding portion 6a side and the fitting portion 6h on one end side of the connecting portion 6e to bond them together. While joining by the layer 6f, an adhesive agent is apply | coated between the fitting part 6g by the side of the holding | maintenance part 6b, and the fitting part 6g by the side of the other edge part of the connection part 6e, and these are joined by the adhesive layer 6f.

  The elastic member manufacturing process # 300 shown in FIG. 7 is a process of manufacturing the elastic members 7A and 7B. In the elastic member manufacturing process # 300, rubber is poured between the inner peripheral part 9b of the outer cylinders 9A and 9B and the outer peripheral part 10b of the connecting members 10A and 10B, and the inner peripheral part 9b of the outer cylinders 9A and 9B and the connecting member 10A. The elastic members 7A and 7B are manufactured by vulcanizing and joining the rubber to the outer peripheral portion 10b of 10B.

  The joining process # 400 is a process of joining the link member 6 and the elastic members 7A and 7B. In the joining step # 400, the outer cylinders 9A, 9B of the elastic members 7A, 7B are press-fitted into the bush holes 6c, 6d of the holding portions 6a, 6b of the link member 6, and the bush holes 6c, 6d and the outer cylinders 9A, 9B are pressed. Tow device 5 is manufactured.

The coupling device according to the first embodiment of the present invention has the following effects.
(1) In the first embodiment, a part of the link member 6 is fiber reinforced plastic. For this reason, while being able to achieve weight reduction of the link member 6, workability | operativity at the time of attachment / detachment of the link member 6 can be improved.

(2) In the first embodiment, the connecting portion 6e that connects the holding portion 6a that holds the elastic member 7A on the cart 4 side and the holding portion 6b that holds the elastic member 7B on the vehicle body 3 side is a fiber reinforced plastic. . For this reason, by reducing the weight of the link member 6, workability at the time of maintenance can be improved and energy required for operation of the vehicle 2 can be reduced.

(3) In the first embodiment, the holding portions 6a and 6b and the connecting portion 6e are joined by an adhesive. For this reason, the welding work like the conventional single link type towing apparatus becomes unnecessary, the work load can be greatly reduced, and the safety can be improved.

(4) In the first embodiment, the fitting portion 6g on the holding portions 6a and 6b side and the fitting portion 6h on the connecting portion 6e side are joined by an adhesive. For this reason, the joining area of holding | maintenance part 6a, 6b and the connection part 6e becomes large, and these can be joined still more firmly.

(5) In the first embodiment, the link member 6 is a tension bar of a single link type towing device that connects the vehicle body 3 and the cart 4 via a rubber cylinder. For this reason, the link member 6 can be formed thin and the amount of expansion and contraction can be increased while maintaining the same elastic modulus as that of the iron link member of the conventional single link type towing device. As a result, the vibration of the carriage 4 can be reduced, and the acceleration of the vehicle 2 at the time of acceleration / deceleration or passing through a curve can be moderated, so that riding comfort can be improved. In addition, compared with the iron link member of the conventional single link type towing device, the range of elastic deformation of the link member 6 is widened so that the link member 6 is easily restored to its original shape and permanently deformed. Can be prevented. Furthermore, the impact generated between the vehicle body 3 and the cart 4 can be mitigated, and the lifespan of the vehicle body 3 and the cart 4 can be extended.

(6) In the first embodiment, the fibers in the fiber reinforced plastic are oriented in the length direction of the link member 6. For this reason, the direction of the longitudinal force acting on the link member 6 and the fiber direction substantially coincide with each other, and sufficient strength against the stress acting on the link member 6 can be ensured.

(7) In the first embodiment, a part of the link member 6 is a carbon fiber reinforced plastic. For this reason, it is possible to reduce the weight of the link member 6 and to improve the strength of the link member 6 as compared with the conventional single link type towing device.

(Second Embodiment)
Hereinafter, the same parts and the same steps as those shown in FIGS. 1 to 8 are designated by the same reference numerals, and detailed description thereof is omitted.
The traction device 5 shown in FIGS. 9 and 10 is different from the link member 6 shown in FIGS. 1 to 6, and all of the link members 6 shown in FIGS. 9 and 10 are fiber reinforced plastic. The link member 6 includes a holding portion 6a that holds the elastic member 7A on the cart 4 side, a holding portion 6b that holds the elastic member 7B on the vehicle body 3 side, and a connecting portion 6e that connects the holding portion 6a and the holding portion 6b. Is a fiber reinforced plastic. As such a fiber reinforced plastic, a carbon fiber reinforced plastic is preferable similarly to the connecting portion 6e shown in FIGS. 2, 4, 5, and 6. In the link member 6 shown in FIGS. 11A to 11E, the holding portions 6a and 6b and the connecting portion 6e are joined by an adhesive, and the link member 6 shown in FIG. 6b and the connection part 6e are joined by the joining material 6k.

  The connecting portion 6e is formed in a predetermined shape by, for example, laminating and heating a prepreg. As shown in FIGS. 10 and 11, the holding portions 6a and 6b include a joint portion 6i and the connection portion 6e includes a joint portion 6j and the like. The joining portions 6i and 6j are portions that join the holding portions 6a and 6b and the connecting portion 6e. The joining parts 6i and 6j join the holding parts 6a and 6b and the connecting part 6e in the joining form shown in FIGS.

  10 and 11A is an outer peripheral surface on the holding portions 6a and 6b side, and the joint 6j is both end surfaces of the connecting portion 6e. The joining portion 6j is formed by processing both end portions of the connecting portion 6e into circular arc surfaces having the same shape as the outer peripheral surfaces of the holding portions 6a and 6b so as to be in close contact with the joining portion 6i on the holding portions 6a and 6b side. .

  The joint portion 6i shown in FIG. 11B is an inner peripheral surface of a through hole that penetrates the outer peripheral surfaces of the holding portions 6a and 6b, and has an inner diameter that is substantially the same as the outer diameter of the connecting portion 6e. Yes. The joint portion 6j is an outer peripheral surface of the connecting portion 6e that fits with the joint portion 6i of the holding portions 6a and 6b. The connecting portion 6e is formed by processing both end portions of the connecting portion 6e on a circular arc surface having the same shape as the inner peripheral surfaces of the holding portions 6a and 6b.

  The joint 6i shown in FIG. 11C is an outer peripheral surface on the holding parts 6a and 6b side, and the joint 6j is both end faces of the connecting part 6e. For example, the joining portion 6j is formed by fitting a filler such as a columnar resin foam into both ends of the connecting portion 6e, and joining the filling and the connecting portion 6e with an adhesive, and then, on the holding portions 6a and 6b side. It is formed by processing into an arc surface having the same shape as the outer peripheral surfaces of the holding portions 6a and 6b so as to be in close contact with the joint portion 6i.

  11D is a protruding portion that protrudes from the outer peripheral surface of the holding portions 6a and 6b. The joint portion 6i is formed as a cylindrical convex portion integrally with the holding portions 6a and 6b, and the outer diameter of the convex portion is formed to be approximately the same as the inner diameter of the connecting portion 6e. The joint 6i is formed in a convex shape by cutting the outer peripheral surfaces of the holding portions 6a and 6b after the holding portions 6a and 6b are formed thick as shown by a two-dot chain line in the figure. The joining portion 6j is formed by processing both end portions of the connecting portion 6e into circular arc surfaces having the same shape as the outer peripheral surfaces of the holding portions 6a and 6b so as to be in close contact with the joining portion 6i on the holding portions 6a and 6b side. .

  A joining portion 6i shown in FIG. 11E is a protruding portion that protrudes from the outer peripheral surface of the holding portions 6a and 6b. The joint portion 6i is formed as a cylindrical convex portion integrally with the holding portions 6a and 6b, and the outer diameter of the convex portion is formed to be approximately the same as the inner diameter of the connecting portion 6e. The joint portion 6i is formed, for example, by integrally forming the holding portions 6a and 6b by laminating prepregs, forming a convex shape, and curing by heating. The joining portion 6j is formed by processing both end portions of the connecting portion 6e into circular arc surfaces having the same shape as the outer peripheral surfaces of the holding portions 6a and 6b so as to be in close contact with the joining portion 6i on the holding portions 6a and 6b side. .

  The joint 6i shown in FIG. 11F is an outer peripheral surface on the holding parts 6a and 6b side, and the joint 6j is both end faces of the connecting part 6e. The joining portion 6j is formed by processing both end portions of the connecting portion 6e into circular arc surfaces having the same shape as the outer peripheral surfaces of the holding portions 6a and 6b. The joining parts 6i and 6j are joined by the adhesive layer 6f. The joining material 6k is a member that joins the holding portions 6a and 6b and the connecting portion 6e. The bonding material 6k is bonded to the outer peripheral surfaces of the holding portions 6a and 6b and the outer peripheral surface of the connecting portion 6e. For example, the bonding material 6k is heated and cured by winding a prepreg sheet so as to straddle the outer peripheral surface of the holding portions 6a and 6b and the outer peripheral surface of the connecting portion 6e in a state where the bonding portion 6i and the bonding portion 6j are bonded. The holding portions 6a and 6b and the connecting portion 6e are integrally formed.

Next explained is a method for manufacturing the coupling device according to the second embodiment of the invention.
The link member manufacturing process # 200 shown in FIG. 12 is a process in which the entire link member 6 is manufactured from fiber-reinforced plastic. The link member manufacturing process # 200 includes a holding part manufacturing process # 204, a connecting part manufacturing process # 205, a joining process # 206, and the like. The holding part manufacturing process # 204 is a process of manufacturing the holding part 6a for holding the elastic member 7A on the cart 4 side and the holding part 6b for holding the elastic member 7B on the vehicle body 3 side using fiber reinforced plastic. In the holding part manufacturing process # 204, for example, the holding parts 6a and 6b are manufactured by the sheet winding method in the same manner as in the holding part manufacturing process # 201 shown in FIGS. Here, the cored bar 12 shown in FIG. 13 has an outer diameter that is the same as the inner diameter of the holding portions 6a and 6b.

  In the holding part manufacturing process # 204 shown in FIG. 12, when manufacturing the holding parts 6a and 6b shown in FIGS. 11A, 11C, and 11F, the same as the connecting part manufacturing process # 202 shown in FIG. By the manufacturing process, the holding portions 6a and 6b are manufactured as shown in FIG. In the holder manufacturing step # 204, when the holders 6a and 6b shown in FIG. 11B are manufactured, the holders 6a and 6b are manufactured after the holders 6a and 6b are manufactured as shown in FIG. A through hole is formed on the outer peripheral surface by machining to form the joint 6i. In the holder manufacturing step # 204, when the holders 6a and 6b shown in FIG. 11D are manufactured, the holders 6a and 6b shown in FIGS. 11A to 11C are used. The prepreg sheet 13 is wound and laminated thicker than in the case of manufacturing, and the cured holding portions 6a and 6b are machined so that the convex joint portions 6i remain on the outer peripheral surfaces of the heat-cured holding portions 6a and 6b. Cut by. In the holding part manufacturing step # 204, when the holding parts 6a and 6b shown in FIG. 11E are manufactured, the prepreg sheet 13 is laminated thickly in a convex shape only in the part corresponding to the joint part 6i shown in FIG. Heat cure.

  The connecting part manufacturing step # 205 shown in FIG. 12 is a process of manufacturing the connecting part 6e that connects the holding part 6a and the holding part 6b with fiber-reinforced plastic. In connection part manufacturing process # 205, the connection part 6e is manufactured similarly to connection part manufacturing process # 202 shown in FIG. In connection part manufacturing process # 205, in the case of the joining form shown to FIG. 11 (A) (C)-(F), the both ends of the connection part 6e are processed into the same circular arc shape as the outer peripheral surface of holding part 6a, 6b. In the case of the joining form shown in FIG. 11B, both end portions of the connecting portion 6e are processed into circular arc surfaces having the same shape as the inner peripheral surfaces of the holding portions 6a and 6b.

  In the bonding step # 206 shown in FIG. 12, in the case of the bonding configuration shown in FIGS. 11A to 11E, the bonding portions 6i on the holding portions 6a and 6b side and the bonding portion 6j on the connecting portion 6e side are bonded. Join by agent. In the joining step # 206 shown in FIG. 12, in the case of the joining form shown in FIG. 11 (F), the prepreg is straddled across the joining part 6i on the holding parts 6a and 6b side and the joining part 6j on the connecting part 6e side. The sheet 13 and the heat-shrink tape 14 are wound in order and cured by heating, and the holding portions 6a and 6b and the connecting portion 6e are joined by the joining material 6k.

  In the elastic member manufacturing process # 300 shown in FIG. 12, rubber is poured between the inner peripheral part 9b of the outer cylinders 9A and 9B and the outer peripheral part 10b of the connecting members 10A and 10B shown in FIG. 9 and FIG. , 9B and the outer peripheral portion 10b of the connecting members 10A, 10B are vulcanized and joined together to produce the elastic members 7A, 7B integrally. The joining process # 400 shown in FIG. 12 is a process of joining the link member 6 and the elastic members 7A and 7B. In the joining step # 400, the outer peripheral portions 9a of the outer cylinders 9A and 9B of the elastic members 7A and 7B are press-fitted into the bush holes 6c and 6d of the holding portions 6a and 6b. As a result, in the joining step # 400, the traction device 5 is manufactured by fitting the outer peripheral portions 9a of the outer cylinders 9A, 9B of the elastic members 7A, 7B into the bush holes 6c, 6d of the holding portions 6a, 6b.

The coupling device according to the second embodiment of the present invention has the following effects in addition to the effects of the first embodiment.
(1) In the second embodiment, the entire link member 6 is fiber reinforced plastic. For this reason, as compared with the first embodiment, the weight of the link member 6 can be further reduced, and the workability at the time of attaching and detaching the link member 6 can be further improved.

(2) In the second embodiment, the holding portion 6a that holds the elastic member 7A on the cart 4 side, the holding portion 6b that holds the elastic member 7B on the vehicle body 3 side, and the holding portion 6a and the holding portion 6b are connected. The connecting portion 6e to be made is a fiber reinforced plastic. For this reason, the weight of the link member 6 can be further reduced as compared with the first embodiment.

(3) In the second embodiment, the holding portions 6a and 6b and the connecting portion 6e are joined by the joining material 6k. For this reason, for example, a prepreg is laminated and heat-cured so as to straddle the holding portions 6a and 6b and the connecting portion 6e to form the bonding material 6k, and the holding portions 6a and 6b and the connecting portion 6e are joined by the bonding material 6k. It can join still more firmly.

(Third embodiment)
Unlike the link member 6 shown in FIGS. 1 to 6 and FIGS. 9 to 11, the traction device 5 shown in FIGS. 14 and 15 includes metal inner cylinders 16 </ b> A and 16 </ b> B shown in FIGS. 14 and 15. Yes. The link member 6 shown in FIGS. 14 and 15 is entirely made of fiber reinforced plastic. As shown in FIG. 14, the link member 6 includes a holding portion 6a that holds the elastic member 7A on the cart 4 side, a holding portion 6b that holds the elastic member 7B on the vehicle body 3, a holding portion 6a, and a holding portion 6b. The connecting portion 6e for connecting the two is a fiber reinforced plastic, and as such a fiber reinforced plastic, a carbon fiber reinforced plastic is preferable. As shown in FIGS. 14 and 15, the link member 6 has metallic inner cylinders 16 </ b> A and 16 </ b> B joined to outer peripheral parts 16 a and inner metallic parts 16 </ b> A and 16 </ b> B. The outer peripheral portions 9a of the outer cylinders 9A and 9B of the elastic members 7A and 7B are joined to the inner peripheral portion 16b. The holding portions 6a and 6b are integrally joined to the inner cylinders 16A and 16B so that the inner cylinders 16A and 16B can withstand the pressure generated when the elastic members 7A and 7B are press-fitted into the inner cylinders 16A and 16B. It functions as a reinforcing material that reinforces the inner cylinders 16A and 16B. The connecting portion 6e is formed in a predetermined shape by, for example, laminating and heating a prepreg. As shown in FIGS. 16A to 16F, the joining portions 6i and 6j have the holding portions 6a and 6b and the connecting portion 6e in the same joining manner as that shown in FIGS. 11A to 11F. And join.

  The inner cylinder 16A shown in FIGS. 14 and 15 is a member for inserting the elastic member 7A, and the inner cylinder 16B is a member for inserting the elastic member 7B. The inner cylinder 16A constitutes the inner peripheral part of the holding part 6a of the link member 6, and the inner cylinder 16B constitutes the inner peripheral part of the holding part 6b of the link member 6. The inner cylinders 16A and 16B are integrally joined with the holding parts 6a and 6b so that the holding parts 6a and 6b can withstand the pressure generated when the elastic members 7A and 7B are press-fitted into the inner cylinders 16A and 16B. Moreover, it functions as a reinforcing material that reinforces the holding portions 6a and 6b. The inner cylinders 16A and 16B are formed, for example, by machining a carbon steel pipe for machine structure as in the outer cylinders 9A and 9B shown in FIGS. The inner cylinders 16A and 16B have the same structure and accommodate the elastic members 7A and 7B, respectively. Inner cylinder 16A, 16B is provided with the outer peripheral part 16a joined to the inner peripheral part of holding | maintenance part 6a, 6b, the inner peripheral part 16b fitted to the outer peripheral part 9a of elastic member 7A, 7B, etc.

Next explained is a method for manufacturing the coupling device according to the third embodiment of the invention.
The link member manufacturing process # 200 shown in FIG. 17 is a process of manufacturing a part of the link member 6 with fiber reinforced plastic. The link member manufacturing process # 200 includes a holding part manufacturing process # 207, a connecting part manufacturing process # 208, a joining process # 209, and the like. The holding part manufacturing step # 207 is a process of manufacturing the holding parts 6a and 6b with fiber reinforced plastic. As shown in FIG. 18, the outer circumferences of the metal inner cylinders 16A and 16B are formed on the inner peripheral parts of the holding parts 6a and 6b. The part 16a is joined. In the holding part manufacturing process # 207, for example, the holding parts 6a and 6b are manufactured by the sheet winding method in the same manner as in the holding part manufacturing process # 204 shown in FIGS. In the holding part manufacturing process # 207, as shown in FIG. 18, the inner cylinders 16A and 16B are used as core bars, and the prepreg sheet 13 is wound around the outer peripheral surfaces of the inner cylinders 16A and 16B. Next, in holding part manufacturing process # 207, the heat-shrink tape 14 is wound around the outer peripheral surface of the prepreg sheet 13, and the prepreg sheet 13 is heat-cured in the curing device 15. Next, in the holding part manufacturing process # 270, the heat shrink tape 14 is removed after the prepreg sheet 13 is thermally cured, and the outer peripheral part 16a of the inner cylinders 16A and 16B is fitted to the inner peripheral part of the holding parts 6a and 6b. The holding portions 6a and 6b are manufactured integrally with the inner cylinders 16A and 16B. In the holding part manufacturing process # 207, as shown in FIGS. 16A to 16F, the holding part 6a is manufactured by a manufacturing process similar to the manufacturing process of the holding parts 6a and 6b shown in FIGS. , 6b is manufactured.

  In the holding part manufacturing process # 207 shown in FIG. 17, when manufacturing the holding parts 6a and 6b shown in FIGS. 16A, 16C, and 16F, the same as the holding part manufacturing process # 204 shown in FIG. By the manufacturing process, the holding portions 6a and 6b are manufactured as shown in FIG. In the holding part manufacturing step # 207, when the holding parts 6a and 6b shown in FIG. 16B are manufactured, the holding parts 6a and 6b are manufactured after the holding parts 6a and 6b are manufactured as shown in FIG. The outer peripheral surface is cut by machining to the outer peripheral surfaces of the inner cylinders 16A and 16B to form through holes and form the joints 6i. In the holding part manufacturing process # 207, when manufacturing the holding parts 6a and 6b shown in FIG. 16D, the holding parts 6a and 6b shown in FIGS. 16A to 16C are used. The prepreg sheet 13 is wound and laminated thicker than in the case of manufacturing, and the cured holding portions 6a and 6b are machined so that the convex joint portions 6i remain on the outer peripheral surfaces of the heat-cured holding portions 6a and 6b. Cut by. In the holding part manufacturing step # 207, when the holding parts 6a and 6b shown in FIG. 16 (E) are manufactured, the inner cylinder 16A having a protruding protrusion at a portion corresponding to the joint part 6i shown in FIG. The prepreg sheet 13 is wound around the outer peripheral surface of 16B and heat-cured. The connection part manufacturing process # 208 shown in FIG. 17 is a process of manufacturing the connection part 6e that connects the holding part 6a and the holding part 6b with fiber-reinforced plastic. In connection part manufacturing process # 208, the connection part 6e is manufactured similarly to connection part manufacturing process # 205 shown in FIG.12 and FIG.13.

  In the bonding step # 209 shown in FIG. 17, in the case of the bonding configuration shown in FIGS. 16A to 16E, the bonding portion 6i on the holding portions 6a and 6b side and the bonding portion 6j on the connecting portion 6e side are bonded. Join by agent. In the joining step # 209 shown in FIG. 17, in the case of the joining form shown in FIG. 16 (F), the prepreg is straddled across the joining part 6i on the holding parts 6a and 6b side and the joining part 6j on the connecting part 6e side. The sheet 13 and the heat-shrink tape 14 are wound in order and cured by heating, and the holding portions 6a and 6b and the connecting portion 6e are joined by the joining material 6k.

  In the joining step # 400 shown in FIG. 17, the outer peripheral portion 9a of the elastic members 7A and 7B is joined to the inner peripheral portion 16b of the inner cylinders 16A and 16B. In the joining step # 400, the outer peripheral portions 9a of the outer cylinders 9A and 9B of the elastic members 7A and 7B are press-fitted into the inner peripheral portions 16b of the inner cylinders 16A and 16B of the holding portions 6a and 6b. As a result, in the joining step # 400, the outer peripheral portion 9a of the outer cylinder 9A, 9B of the elastic member 7A, 7B is fitted to the inner peripheral portion 16b of the inner cylinder 16A, 16B, and the traction device 5 is manufactured.

The coupling device according to the third embodiment of the present invention has the following effects in addition to the effects of the first and second embodiments.
In the third embodiment, the outer peripheral portions 16a of the metal inner cylinders 16A and 16B are joined to the inner peripheral portions of the holding portions 6a and 6b, and the elastic members are connected to the inner peripheral portions 16b of the metal inner cylinders 16A and 16B. The outer peripheral portions 8a of 7A and 7B are joined. For this reason, the inner peripheral part of holding | maintenance part 6a, 6b can be reinforced with inner cylinder 16A, 16B, and the intensity | strength of holding | maintenance part 6a, 6b can be improved. As a result, the inner cylinders 16A and 16B can prevent the holding portions 6a and 6b from being damaged when the elastic members 7A and 7B are press-fitted into the holding portions 6a and 6b.

(Fourth embodiment)
19 and 20, the traction device 5 shown in FIGS. 19 and 20 is made of fiber reinforced plastic as shown in FIGS. 19 and 20 in the same manner as the link member 6 shown in FIGS. The fixing part 17 shown in FIG. As shown in FIGS. 19 and 20, in the link member 6, the holding portions 6a and 6b and the connecting portion 6e are integrally formed so as to be in a state of being hooked in parallel with the elastic member 7A and the elastic member 7B. . Unlike the connection part 6e shown in FIG.5, FIG10 and FIG.15, the holding | maintenance parts 6a and 6b are formed in the curved-surface part whose cross section is semicircular as shown in FIG. Unlike the connection part 6e shown in FIG.5, FIG10 and FIG.15, the connection part 6e is formed in a pair of square-shaped board part as shown in FIG.

  The fixing portion 17 shown in FIGS. 19 to 21 is a portion for fixing the elastic members 7 </ b> A and 7 </ b> B to the link member 6. As shown in FIGS. 19 and 20, the fixing portion 17 includes an inner surface of the connecting portion 6 e and outer peripheral portions of the inner cylinders 16 </ b> A and 16 </ b> B in order to maintain a constant distance between the elastic member 7 </ b> A and the elastic member 7 </ b> B. It is a wedge-shaped member sandwiched between 16a. The fixing portion 17 prevents the elastic members 7A and 7B from dropping from the holding portions 6a and 6b together with the inner cylinders 16A and 16B when a compressive force is applied between the holding portion 6a and the holding portion 6b. The fixing portion 17 is joined to the inner surface of the connecting portion 6e and the outer peripheral surfaces of the inner cylinders 16A and 16B by a reactive adhesive such as an epoxy adhesive, and the width of the connecting portion 6e is shown in FIG. A plurality (for example, three) are arranged at predetermined intervals in the direction. The fixing portion 17 is made of, for example, carbon fiber reinforced plastic or metal, and functions as a rib that imparts rigidity to the connecting portion 6e.

Next explained is a method for manufacturing the coupling device according to the fourth embodiment of the invention.
The link member manufacturing process # 200 shown in FIG. 22 is a process of manufacturing the entire link member 6 with fiber reinforced plastic, and includes an integral molding process # 210 and a fixing process # 211. Unlike the cored bar 12 shown in FIGS. 8, 13, and 18, the cored bar 12 shown in FIG. 23 (A) is a substantially rectangular metal plate-like member as indicated by parallel oblique lines in the figure. As shown in FIG. 23A, the core metal 12 is provided with a joint portion 12a at one end portion and a joint portion 12b at the other end portion. The joining part 12a is a part joined to the semicircular part of the outer peripheral part 16a on the inner cylinder 16A side, and the joining part 12b is a part joined to the semicircular part of the outer peripheral part 16a on the inner cylinder 16B side. The width of the cored bar 12 is formed wider than the width of the connecting part 6e, and the height of the cored bar 12 is the same as the diameter of the inner cylinders 16A and 16B (the inner surface on the upper side and the inner side on the lower side of the connecting part 6e). And the same distance as the surface). The vacuum back film 18 is a member that brings the prepreg sheet 13 into close contact with the cored bar 12 and the inner cylinders 16A and 16B. The vacuum back film 18 is a bag that covers the surface of the prepreg sheet 13, and contracts by being vacuum-reduced (evacuated) to press the prepreg sheet 13 against the core metal 12 and the inner cylinders 16 </ b> A, 16 </ b> B. The bubbles between 12 and 16A, 16B and the prepreg sheet 13 are pushed out.

  The integral molding step # 210 shown in FIG. 22 is a step of integrally molding the holding portions 6a and 6b and the connecting portion 6e with fiber reinforced plastic. In the integral molding step # 210, as shown in FIG. 23, the holding portions 6a and 6b and the connecting portion 6e are integrally molded so that the link member 6 is placed in parallel with the elastic member 7A and the elastic member 7B. To do. In the integral molding step # 210, for example, a prepreg laminated on a mold is pressed through a protective film for pressurization, heated in a curing furnace, thermally cured, separated from the mold, and a member having an arbitrary shape The link member 6 is manufactured by the prepreg autoclave molding method which manufactures. In the integral molding step # 210, as shown in FIG. 23A, a release agent is applied to the upper and lower surfaces of the cored bar 12, and the joint portions 12a and 12b of the cored bar 12 are fitted into the inner cylinders 16A and 16B, respectively. . After that, in the integral molding step # 210, the prepreg sheet 13 is wound around the upper and lower surfaces of the core metal 12 and the outer peripheral surfaces of the inner cylinders 16A and 16B in a parallel belt shape and laminated with a predetermined thickness. A vacuum back film 18 is wound around the outer peripheral surface of the film. Next, in the integral molding step # 210, the cored bar 12 and the inner cylinders 16A and 16B are accommodated in the curing device 15 and heated while the vacuum back film 18 is wound around the outer peripheral surface of the prepreg sheet 13. At the same time, in the integral molding step # 210, the inside of the vacuum back film 18 is vacuum depressurized to contract the vacuum back film 18 so that the core metal 12 and the inner cylinders 16A and 16B and the prepreg sheet 13 are in close contact with each other. Air bubbles such as existing air are discharged. Finally, in the integral molding step # 210, the prepreg sheet 13 is heat-cured and dried, then taken out from the curing device 15, the vacuum back film 18 is removed, and the cured prepreg sheet 13 is removed from the cored bar 12. As a result, in the integral molding step # 210, the inner cylinders 16A and 16B and the holding portions 6a and 6b are integrated, and the link member 6 in which the holding portions 6a and 6b and the connecting portion 6e are integrated is manufactured.

  The fixing process # 211 is a process of fixing the elastic members 7A and 7B to the link member 6. In the fixing step # 211, as shown in FIG. 23 (B), the fixing portion 17 is sandwiched in the gap between the inner surface of the connecting portion 6e of the link member 6 and the outer peripheral surfaces of the inner cylinders 16A and 16B, thereby connecting the connecting portion 6e. The fixing portion 17 is bonded to the inner surface of the inner cylinder and the outer peripheral surfaces of the inner cylinders 16A and 16B with an adhesive. In the elastic member manufacturing process # 300 shown in FIG. 22, rubber is vulcanized and joined to the outer peripheral portion 10b of the connecting members 10A and 10B and the inner peripheral portion 16b of the inner cylinders 16A and 16B shown in FIGS. The members 7A and 7B are manufactured integrally. In the joining step # 400, as shown in FIG. 23C, the outer peripheral portions 9a of the outer cylinders 9A and 9B of the elastic members 7A and 7B are fitted to the inner peripheral portions 16b of the inner cylinders 16A and 16B, and the traction device 5 is engaged. Is manufactured.

The coupling device according to the fourth embodiment of the present invention has the following effects in addition to the effects of the first and second embodiments.
(1) In the fourth embodiment, the holding portions 6a and 6b and the connecting portion 6e are integrally formed. Therefore, the link member 6 can be further reduced in weight, and the link member 6 can be easily manufactured in a short time.

(2) In the fourth embodiment, the holding portions 6a and 6b and the connecting portion 6e are integrally formed so that the link member 6 is in parallel with the elastic member 7A and the elastic member 7B. For this reason, the structure of the link member 6 is simplified, and the link member 6 can be mass-produced at low cost.

(3) In the fourth embodiment, the fixing member 17 fixes the elastic members 7A and 7B to the link member 6. For this reason, it is possible to prevent the elastic members 7 </ b> A and 7 </ b> B from dropping off from the link member 6 when a compressive force is applied in the front-rear direction of the link member 6.

(Fifth embodiment)
In the traction device 5 shown in FIGS. 24 and 25, all of the link members 6 shown in FIGS. 24 and 25 are made of fiber reinforced plastic, like the link members 6 shown in FIGS. 9 to 11. As shown in FIGS. 21 and 22, in the link member 6, the holding portions 6a and 6b and the connecting portion 6e are integrated so as to be cross-crossed (crossed) between the elastic member 7A and the elastic member 7B. Molded. As shown in FIG. 25, the holding portions 6a and 6b are formed in curved surface portions having a substantially semicircular cross section. The connection part 6e shown in FIG.24 and FIG.25 is formed in a pair of board part with a square cross section similarly to the connection part 6e shown in FIGS. The fixing part 17 shown in FIGS. 24 and 25 is similar to the fixing part 17 shown in FIG. 19 to FIG. The outer peripheral surface of the connecting portion 6e is arranged at a predetermined interval in the width direction of the connecting portion 6e.

Next explained is a method for manufacturing the coupling device according to the fifth embodiment of the invention.
A link member manufacturing process # 200 shown in FIG. 26 is a process of manufacturing the entire link member 6 with fiber reinforced plastic, and includes an integral molding process # 212, a fixing process # 213, and the like. Unlike the core metal 12 shown in FIG. 23, the metal cores 12A and 12B shown in FIG. 27A are isosceles triangular metal plate-like members as indicated by parallel oblique lines in the drawing. As shown in FIG. 27A, the cored bars 12A and 12B are provided with joint portions 12c and 12d at one end (a portion corresponding to the bottom side), respectively. The joining part 12c is a part joined to the substantially semicircular part of the outer peripheral part 16a on the inner cylinder 16A side, and the joining part 12d is a part joined to the substantially semicircular part of the outer peripheral part 16a on the inner cylinder 16B side. The cored bars 12A and 12B are formed in the same shape as the space surrounded by the upper inner surface and the lower inner surface of the connecting portion 6e and the outer peripheral surface of the inner cylinders 16A and 16B, and the cored bars 12A and 12B The width is formed wider than the width of the connecting portion 6e.

  The integral molding step # 212 shown in FIG. 26 is a step of integrally molding the holding portions 6a and 6b and the connecting portion 6e with fiber reinforced plastic. In the constant forming step # 212, as shown in FIG. 27, the holding portions 6a and 6b and the connecting portion 6e are integrally formed so that the link member 6 is crossed over the elastic member 7A and the elastic member 7B. To do. In the integral molding step # 212, for example, the link member 6 is manufactured by an autoclave molding method as in the integral molding step # 210 shown in FIGS. In the integral molding step # 212, as shown in FIG. 27A, a release agent is applied to the upper and lower surfaces of the core bars 12A and 12B, and the joint portions 12c and 12d of the core bars 12A and 12B are connected to the inner cylinders 16A and 16B. Fit into each. Thereafter, in the integral molding step # 212, the prepreg sheet 13 is wound around the upper and lower surfaces of the core bars 12A and 12B and the outer peripheral surfaces of the inner cylinders 16A and 16B in a cross-belt shape and laminated to a predetermined thickness. A vacuum back film 18 is wound around the outer peripheral surface of 13. Next, in the integral molding step # 212, the core bars 12A and 12B and the inner cylinders 16A and 16B are accommodated in the curing device 15 in a state where the vacuum back film 18 is wound around the outer peripheral surface of the prepreg sheet 13, and the core bar 12 is accommodated. And the vacuum back film 18 is contracted to bring the prepreg sheet 13 and the cored bars 12A and 12B into close contact with each other. Finally, in the integral molding step # 212, after the prepreg sheet 13 is heated and cured and dried, the prepreg sheet 13 is taken out from the curing device 15, the vacuum back film 18 is removed, and the cured prepreg sheet 13 is removed from the core bars 12A and 12B. As a result, in the integral molding step # 212, the inner cylinders 16A and 16B and the holding portions 6a and 6b are integrated, and the link member 6 in which the holding portions 6a and 6b and the connecting portion 6e are integrated is manufactured.

  The fixing process # 213 shown in FIG. 26 is a process of fixing the elastic members 7A and 7B to the link member 6. In the fixing step # 213, as shown in FIG. 27B, the fixing portion 17 is sandwiched in the gap between the inner surface of the connecting portion 6e of the link member 6 and the outer peripheral surfaces of the inner cylinders 16A and 16B, thereby connecting the connecting portion 6e. The fixing portion 17 is bonded to the inner surface of the inner cylinder and the outer peripheral surfaces of the inner cylinders 16A and 16B with an adhesive. In the elastic member manufacturing process # 300 shown in FIG. 26, rubber is vulcanized and joined to the outer peripheral portion 10b of the connecting members 10A and 10B and the inner peripheral portion 16b of the inner cylinders 16A and 16B shown in FIGS. The members 7A and 7B are manufactured integrally. In the joining step # 400, as shown in FIG. 27C, the outer peripheral portion 9a of the outer cylinder 9A, 9B of the elastic member 7A, 7B is fitted to the inner peripheral portion 16b of the inner cylinder 16A, 16B, and the towing device 5 is engaged. Is manufactured.

The coupling device according to the fifth embodiment of the present invention has the following effects in addition to the effects of the first embodiment, the second embodiment, and the fourth embodiment.
In the fifth embodiment, the holding portions 6a and 6b and the connecting portion 6e are integrally formed so that the link member 6 is crossed over the elastic member 7A and the elastic member 7B. For this reason, the structure of the link member 6 is simplified, and the link member 6 can be mass-produced at low cost. Moreover, since the height of the link member 6 can be lowered between the holding portion 6a and the holding portion 6b, the traction device 5 is installed so as not to interfere with other devices even in a small installation space. be able to.

(Sixth embodiment)
The vehicle 2 shown in FIG. 28 is a pneumatic vehicle or an internal combustion engine vehicle, for example. The vehicle 2 includes a power unit 19, a transmission 20 shown in FIG. 28, a speed reducer 21, a power transmission unit 22 shown in FIGS. 28 and 29, and the like. The moving wheel 4d shown in FIG. 28 is a wheel that transmits power, and is in rolling contact with the rail 1a in the same manner as the wheel 4a shown in FIG.

  A power unit 19 shown in FIG. 28 is a unit that generates power. The power unit 19 is, for example, an internal combustion engine that generates power by converting thermal energy into rotational energy, and is a prime mover such as a diesel engine. The power unit 19 is fixed below the floor of the vehicle body 3 of the vehicle 2. The transmission 20 is a device that converts torque generated by the power unit 19. The transmission 20 is, for example, a fluid transmission that rotates an output shaft by the kinetic energy of fluid generated by the rotation of the input shaft. As shown in FIGS. 28 and 29, the transmission 20 includes a drive shaft (input shaft) 20 a that is driven by the power unit 19. The speed reducer 21 shown in FIG. 28 is a device that transmits the rotational force from the transmission member 24 to the driving wheel 4d. The speed reducer 21 is incorporated between the transmission member 24 and the driving wheel 4d, reduces the rotational force from the transmission member 24 via the gear mechanism, increases the rotational force, and changes the transmission direction of the rotational force. This is transmitted to the driving wheel 4d. As shown in FIGS. 28 and 29, the speed reducer 21 includes a driven shaft (output shaft) 21a that is driven by power from the drive shaft 20a.

  The power transmission device 22 shown in FIGS. 28 and 29 is a device that transmits power by the transmission member 24. The power transmission device 22 connects the drive shaft 20 a of the transmission 20 and the driven shaft 21 a of the speed reducer 21 by a transmission member 24. The power transmission device 22 functions as a rotating shaft that transmits power for driving the driving wheel 4d. The power transmission device 22 includes joint portions 23A and 23B, a transmission member 24, and the like. The power transmission device 22 connects the drive shaft 20a on the transmission 20 side and the driven shaft 21a on the reduction gear 21 side via the transmission member 24, and transmits the driving force from the power device 19 to the driving wheel 4d.

  The joint portion 23A is a portion that rotatably connects the drive shaft 20a on the transmission 20 side and the transmission member 24, and the joint portion 23B rotatably connects the driven shaft 21a on the reduction gear 21 side and the transmission member 24. It is a part to do. The joint portions 23A and 23B are universal joints (universal joints) capable of transmitting rotational force from the drive shaft 20a to the driven shaft 21a even when the center line of the drive shaft 20a and the center line of the driven shaft 21a intersect. It is. The joint portions 23A and 23B have the same structure, and include a main body portion 23a shown in FIGS. 28 and 29, a cross shaft 23b, a yoke 23c, a fitting portion 23d shown in FIG.

  28 and 29 are portions that are joined to both ends of the transmission member 24, and rotate integrally with the transmission member 24. The cross shaft 23b connects the end of the transmission member 24 and the end of the drive shaft 20a, and connects the end of the transmission member 24 and the end of the driven shaft 21a. As shown in FIG. 29, the cross shaft 23b is a rotary shaft 23e that is rotatably connected to a yoke 23c on the transmission member 24 side, and is orthogonal to the rotary shaft 23e and freely rotatable to the drive shaft 20a and the driven shaft 21a. And a rotating shaft 23f coupled to the motor. The yoke 23c shown in FIGS. 28 and 29 is a portion that rotatably supports the rotary shaft 23e of the cross shaft 23b. The yoke 23c is a frame member having a substantially U-shaped cross section, functions as a bearing that rotatably supports the rotary shaft 23e of the cross shaft 23b, and rotates integrally with the main body portion 23a. A fitting portion 23d shown in FIG. 29 is a portion that fits with the fitting portion 24a on the transmission member 24 side. The fitting portion 23d is a step portion formed in a concave shape by cutting the entire outer peripheral surface of the end portion of the main body portion 23a with a predetermined depth and width by machining or the like. The fitting portion 23 d is formed with substantially the same depth as the thickness of the transmission member 24.

  The transmission member 24 shown in FIGS. 28 and 29 is a member that transmits power between the drive shaft 20a and the driven shaft 21a. The transmission member 24 is a propulsion shaft that connects the drive shaft 20a and the driven shaft 21a, and one end portion of the transmission member 24 is connected to the end portion of the drive shaft 20a via a joint portion 23A. The other end of 24 is connected to the end of the driven shaft 21a via the joint 23B. The transmission member 24 is a connecting pipe having a rod-like appearance, and constitutes a main body portion of the power transmission device 22. The transmission member 24 is entirely made of fiber reinforced plastic. As such a fiber reinforced plastic, for example, a carbon fiber reinforced plastic is preferable. In the transmission member 24, the fibers in the fiber reinforced plastic are mainly oriented in the twisting direction of the transmission member 24 so as to have strength against torque acting on the transmission member 24. The transmission member 24 is joined to the joint portions 23A and 23B with an adhesive. The transmission member 24 includes a fitting portion 24a and the like. The fitting portion 24a is a portion that fits with the fitting portion 23d on the joint portion 23A, 23B side. The fitting portion 24a is formed at both ends of the transmission member 24, and the inner peripheral surface of the fitting portion 24a is joined to the outer peripheral surface of the fitting portion 23d. The fitting portion 24a is joined to the fitting portion 23d with, for example, a reactive adhesive such as an epoxy resin.

Next, a method for manufacturing a power transmission device according to the sixth embodiment of the present invention will be described.
Manufacturing method # 100 shown in FIG. 7 is a manufacturing method of the power transmission device 22 that transmits power by the transmission member 24. Manufacturing method # 100 includes transmission member manufacturing process # 500, joining process # 600, and the like. A cored bar 12 shown in FIG. 31 is a mold used when the transmission member 24 is molded. The cored bar 12 has an outer diameter that is the same as the inner diameter of the transmission member 24.

The transmission member manufacturing process # 500 shown in FIG. 30 is a process in which a part of the transmission member 24 is manufactured using fiber reinforced plastic. In the transmission member manufacturing process # 500, for example, the transmission member 24 is manufactured by the same sheet winding method as the connecting part manufacturing process # 201 shown in FIGS. In the transmission member manufacturing process # 500, the fibers in the fiber reinforced plastic are oriented mainly in the twisting direction of the transmission member 24. In the transmission member manufacturing process # 500, the fiber directions of the carbon fibers are 0 °, ± 45 °, and 90 ° with respect to the direction of action of the torsional moment acting on the transmission member 24 (directions B ₁ and B ₂ shown in FIG. 31). The fiber direction is changed so as to intersect, and the prepreg sheet 13 is wound around the outer peripheral surface of the core metal 12. In the transmission member manufacturing step # 500, after the prepreg sheet 13 is heated and cured and dried, the cored bar 12 is taken out from the curing device 15, the heat shrink tape 14 is removed, and the cured prepreg sheet 13 is removed from the cored bar 12. Then, the transmission member 24 is manufactured by cutting into a predetermined length.

  A joining step # 600 shown in FIG. 30 is a step of joining the transmission member 24 and the joint portions 23A and 23B with an adhesive. In the bonding process # 600, as shown in FIG. 20, an adhesive is applied between the fitting portion 23d on the joint portion 23A side and the fitting portion 24a on one end side of the transmission member 24 to join them together. At the same time, an adhesive is applied between the fitting portion 23d on the joint portion 23B side and the fitting portion 24a on the other end side of the transmission member 24 to join them, whereby the power transmission device 22 is manufactured. .

The power transmission device according to the sixth embodiment of the present invention has the following effects in addition to the effects of the first embodiment.
(1) In the sixth embodiment, the entire transmission member 24 is fiber reinforced plastic. For this reason, the weight of the transmission member 24 can be further reduced, and workability at the time of attaching and detaching the transmission member 24 can be further improved.

(2) In the sixth embodiment, the transmission member 24 that connects the drive shaft 20a driven by the power unit 19 and the driven shaft 21a driven by the power from the drive shaft 20a is a propulsion of the power transmission unit 22. Is the axis. For this reason, compared with the iron link member of the conventional power transmission device, the range of elastic deformation of the transmission member 24 is widened so that the transmission member 24 can be easily restored to its original shape and permanently deformed. Can be prevented. Moreover, the impact which generate | occur | produces between the drive shaft 20a and the driven shaft 21a can be relieved, and the lifetime of the drive shaft 20a and the driven shaft 21a can be extended.

(3) In the sixth embodiment, the fibers in the fiber reinforced plastic are oriented in the twisting direction of the transmission member 24. For this reason, the torque acting on the transmission member 24 and the fiber direction substantially coincide with each other, and sufficient strength against the torsional stress acting on the transmission member 24 can be ensured.

(Other embodiments)
The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the scope of the present invention.
(1) In this embodiment, the traction device 5 has been described as an example of a coupling device, but the coupling device is not limited to such a traction device 5. For example, the bolster anchor device that connects the sleeper of the vehicle 2 and the vehicle body 3 or the bogie frame 4b shown in FIG. 1 by a link member, the yaw damper device that connects the vehicle body 3 and the bogie frame 4b of the vehicle 2 by a link member, and a shaft box A shaft-beam-type axle box support device that connects the shaft beam integral with the carriage frame 4b by a link member, and a vehicle end damper that connects the end surface of one vehicle body 3 and the end surface of the other vehicle body 3 by a link member The present invention can also be applied to a connecting device such as an inter-vehicle yaw damper device that connects the vehicle body, one vehicle body 3 and the other vehicle body 3 with link members in the direction of the left and right rails 1a. Further, in this embodiment, the prepreg sheet 13 in which the carbon fibers are oriented in one direction has been described as an example, but a prepreg sheet in which the carbon fibers are oriented by intersecting by 90 ° can also be used. Furthermore, in this 1st Embodiment, although the case where the fitting part 6g by the side of holding | maintenance parts 6a and 6b and the fitting part 6h by the side of the connection part 6e were joined was mentioned as an example, it demonstrated, FIG. The holding portions 6a and 6b and the connecting portion 6e can be joined by a joining form as shown in A) to (E).

(2) In the second and third embodiments, the case where the holding portions 6a and 6b and the connecting portion 6e are joined by the joining form as shown in FIGS. 11 and 16 has been described as an example. As shown in FIG. 6, the holding portions 6a and 6b and the connecting portion 6e can be fitted and joined. In the third embodiment, the molded elastic members 7A and 7B are press-fitted into the inner peripheral portions 16b of the inner cylinders 16A and 16B of the holding portions 6a and 6b after the heat molding. It is not limited to. For example, the outer cylinders 9A and 9B are fitted into the inner cylinders 16A and 16B of the holding portions 6a and 6b after the heat molding, and rubber is poured between the outer cylinders 9A and 9B and the connecting members 10A and 10B. A rubber material can be vulcanized and bonded to 9A and 9B and the connecting members 10A and 10B. Similarly, the outer cylinders 9A and 9B are fitted into the inner cylinders 16A and 16B of the holding portions 6a and 6b before the heat molding, and rubber is poured between the outer cylinders 9A and 9B and the connecting members 10A and 10B to hold them. It is also possible to vulcanize and join a rubber material to the outer cylinders 9A and 9B and the connecting members 10A and 10B when the portions 6a and 6b are thermoformed. Further, in the third to fifth embodiments, the case where the outer peripheral portions 16a of the inner cylinders 16A and 16B are fitted to the inner peripheral portions of the holding portions 6a and 6b has been described as an example. 16B can be omitted and the elastic members 7A and 7B can be press-fitted into the holding portions 6a and 6b.

(3) In the fourth embodiment, the case where the elastic members 7A and 7B are molded in a state where the link member 6 is placed in parallel is described as an example, but the height of the upper and lower connecting portions 6e is as low as possible. Thus, when it is formed as the traction device 5, interference with other devices can be prevented. In the fourth and fifth embodiments, the case where the fixing portion 17 is joined to the link member 6 with an adhesive has been described as an example. However, a prepreg sheet is laminated on a portion corresponding to the fixing portion 17. The fixing portion 17 can be integrally formed with the link member 6 by being cured by heating together with the link member 6. Furthermore, in the fourth and fifth embodiments, the case where a space is formed between the upper and lower inner surfaces of the connecting portion 6e has been described as an example, but this space is filled with a fiber reinforced plastic plate or the like. You can also

(4) In the fourth and fifth embodiments, the case where the link member 6 is manufactured by an autoclave molding method has been described as an example, but the present invention is not limited to such a manufacturing method. For example, by a prepreg press molding method in which prepreg sheets are stacked and placed in a mold and heat-cured, or a filament winding molding method in which Tamba impregnated with resin is wound to a predetermined thickness at a predetermined angle and heat-cured. The link member 6 can also be manufactured. In particular, in the case of the filament winding molding method, the holding portions 6a and 6b and the connecting portion 6e can be integrally molded in a state where the link member 6 is hooked in parallel and crossed on the elastic members 7A and 7B. Furthermore, in this 4th Embodiment and 5th Embodiment, after joining the fixing | fixed part 17 between the connection part 6e and inner cylinder 16A, 16B, when elastic-pressing member 7A, 7B is press-fit in inner cylinder 16A, 16B. However, after the elastic members 7A and 7B are press-fitted into the inner cylinders 16A and 16B, the fixing part 17 can be joined between the connecting part 6e and the inner cylinders 16A and 16B.

(5) Although the propulsion shaft has been described as an example of the transmission member 24 in the sixth embodiment, the transmission member 24 is not limited to the propulsion shaft. For example, an auxiliary machine shaft that is a transmission member that transmits power from the power unit 19 to auxiliary equipment such as a vehicle air compressor, a cooling blower, or a charging power generator, or a transmission member that transmits power from the main motor of the vehicle to the axle The present invention can also be applied to the main motor shaft. In the sixth embodiment, the transmission member 24 is entirely made of fiber reinforced plastic. However, a part of the transmission member 24 may be made of fiber reinforced plastic. In the sixth embodiment, the case where the joint portions 23A and 23B are made of metal has been described as an example. However, the main body portion 23a of the joint portions 23A and 23B can be made of fiber reinforced plastic. Furthermore, in the sixth embodiment, the case where the fitting portion 24a on the transmission member 24 side and the fitting portion 23d on the joint portions 23A and 23B side are joined by an adhesive has been described as an example. The transmission member 24 and the joint portions 23A and 23B can be joined by the joining form shown in FIG.

1 track 1a rail 2 vehicle 3 vehicle body (second member)
3a Car body side connecting part 4 Bogie (first member)
4c Dolly side connecting part 4d Driving wheel 5 Towing device (connecting device)
6 Link member 6a, 6b Holding part 6c Bush hole 6d Bush hole 6e Connection part 6f Adhesive layer 6g, 6h Fitting part 6i, 6j Joining part 6k Joining material 7A Elastic member (first elastic member)
7B Elastic member (second elastic member)
8A, 8B Rubber cylinder 8a Outer peripheral part 8b Inner peripheral part 9A, 9B Outer cylinder 9a Outer peripheral part 9b Inner peripheral part 10A Connecting member (first connecting member)
10B connecting member (second connecting member)
10a shaft portion 10b outer peripheral portion 10c mounting portion 10d mounting hole 11A fixing member 11B fixing member 11a bolt head 12 core metal 12a-12g joint portion 13 prepreg sheet 14 heat shrink tape 15 curing device 16A, 16B inner cylinder 16a outer peripheral portion 16b Peripheral portion 17 Fixed portion 18 Vacuum back film 19 Power device 20 Transmission 20a Drive shaft 21 Reducer 21a Drive shaft 22 Power transmission device 23A, 23B Joint portion 23a Body portion 23b Cross shaft 23c Yoke 23d Fitting portion 23e, 23f Rotating shaft 24 Transmission member 24a Fitting part

Claims (19)

A connecting device for connecting the first and second members by a link member,
A part of the link member is a fiber reinforced plastic;
A coupling device characterized by. A connecting device for connecting the first and second members by a link member,
All of the link members are fiber reinforced plastic;
A coupling device characterized by. The connection device according to claim 1,
The link member connects a first holding part that holds the first elastic member on the first member side and a second holding part that holds the second elastic member on the second member side. The connecting part is made of fiber reinforced plastic,
A coupling device characterized by. The connecting device according to claim 2,
The link member includes a first holding portion that holds the first elastic member on the first member side, a second holding portion that holds the second elastic member on the second member side, and The connecting portion connecting the first holding portion and the second holding portion is a fiber reinforced plastic;
A coupling device characterized by. In the connection device according to claim 3 or 4,
In the link member, the first and second holding portions and the connecting portion are joined by an adhesive,
A coupling device characterized by. The connecting device according to claim 5, wherein
In the link member, the fitting part on the first and second holding part sides and the fitting part on the connecting part side are joined by an adhesive,
A coupling device characterized by. In the connecting device according to claim 4 or 5,
In the link member, the first and second holding portions and the connecting portion are joined by a joining material,
A coupling device characterized by. The connecting device according to claim 4, wherein
In the link member, the first and second holding portions and the connecting portion are integrally formed,
A coupling device characterized by. The connecting device according to claim 8, wherein
In the link member, the first and second holding portions and the connecting portion are integrally formed so as to be in a state of being hooked in parallel with the first elastic member and the second elastic member. Being
A coupling device characterized by. The connecting device according to claim 8 or 9,
In the link member, the first and second holding portions and the connecting portion are integrally formed so as to be in a state of being crossed by the first elastic member and the second elastic member. Being
A coupling device characterized by. In the connection device according to claim 9 or 10,
The link member includes a fixing portion for fixing the first and second elastic members to the link member;
A coupling device characterized by. In the connection device according to any one of claims 3 to 11,
In the link member, an outer peripheral portion of a metal inner cylinder is joined to inner peripheral portions of the first and second holding portions, and an outer peripheral portion of the elastic member is connected to an inner peripheral portion of the metal inner cylinder. Joining,
A coupling device characterized by. In the connection device according to any one of claims 1 to 12,
When the first member is a cart and the second member is a vehicle body, the link member is a tension rod of a single link type towing device that connects the vehicle body and the cart via a rubber cylinder. Being
A coupling device characterized by. In the connection device according to any one of claims 1 to 13,
In the link member, fibers in the fiber reinforced plastic are oriented in the length direction of the link member,
A coupling device characterized by. In the connection device according to any one of claims 1 to 14,
The fiber reinforced plastic is a carbon fiber reinforced plastic;
A coupling device characterized by. A power transmission device for transmitting power by a transmission member,
A part or all of the transmission member is a fiber reinforced plastic;
A power transmission device characterized by. The power transmission device according to claim 16,
The transmission member is a propulsion shaft that connects a drive shaft driven by a power unit and a driven shaft driven by power from the drive shaft;
A power transmission device characterized by. The power transmission device according to claim 17,
The transmission member, the fibers in the fiber reinforced plastic are oriented in the torsional direction of the transmission member;
A power transmission device characterized by. The power transmission device according to any one of claims 16 to 18,
The fiber reinforced plastic is a carbon fiber reinforced plastic;
A power transmission device characterized by.

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