JP2009160975A - Transmission belt drive mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmission belt drive mechanism allowing easy replacement of a transmission belt from an output shaft mounted with a P/S pump on the front side, and accurate remounting of the P/S pump. <P>SOLUTION: The transmission belt drive mechanism comprises a driving electric motor mounted on a vehicle body, the P/S pump connected via a coupling to the output shaft front end of the driving electric motor, and the transmission belt applied onto the output shaft for another accessory to be connected thereto. An oil pump stay to which the P/S pump is fixed and an oil pump bracket on which the oil pump stay is mounted in a face-to-face manner have cutout portions, respectively. An overlapped area between the cutout portions is used to form a working hole. With the working hole, mounting/demounting work for a fastening bolt to fasten the coupling can be done on the driving member side of the P/S pump. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention mainly relates to a drive mechanism for vehicle auxiliary machines in a series hybrid vehicle, and more particularly to a conductive belt drive mechanism that facilitates replacement work of a conductive belt.

  A series hybrid vehicle travels with the power of a traveling electric motor, and an engine is used to drive a generator. As a result, the engine is operated in the most efficient state, and when sufficient power is stored in the rechargeable battery, the engine is stopped to reduce fuel consumption and exhaust gas emission. ing. See Patent Document 1.

  For example, a large-sized route bus adopting a series hybrid system is known in which a rechargeable battery is installed on the ceiling of the vehicle, an electric motor for traveling is assembled on the rear wheel output shaft, and a diesel engine and generator are mounted on the rear of the vehicle. It has been.

  In such a series hybrid large-sized route bus, an air compressor and a power steering pump (hereinafter referred to as “P / S pump”) are assembled to an auxiliary electric motor disposed under the floor of the vehicle, and compressed air is compressed by the air compressor. Was stored in an air tank and various actuators and boosters were made to function, or a P / S pump was used to pump hydraulic oil to the power steering mechanism.

  On the other hand, conventionally, a compressor for an air conditioner is assembled to an engine and driven by the power of the engine. For this reason, in summer and the like, the engine is driven to work the cooling inside the vehicle even when the rechargeable battery is sufficiently charged, and improvement has been desired in terms of reducing fuel consumption.

  Therefore, it has been considered that an air conditioner compressor is attached to an auxiliary drive mechanism and is driven using an auxiliary electric motor.

  However, if the compressor for an air conditioner is attached to an auxiliary drive mechanism, three or more auxiliary machines are assembled into one auxiliary electric motor, and the auxiliary machine and the auxiliary electric motor are connected to a conductive belt. It became necessary to connect using

  In addition, the P / S pump is directly attached to the output shaft of the auxiliary electric motor because the P / S pump needs to be constantly driven during traveling of the vehicle and the drive rotational speed is high. Then, a pulley is attached to an output shaft between the P / S pump and the auxiliary electric motor, and a conduction belt is hung on the pulley to drive, for example, an air conditioner compressor.

On the other hand, since the conductive belt is a consumable part, it needs to be replaced after a predetermined period of use. However, as described above, the P / S pump is assembled at the tip of the output shaft on which the conductive belt is stretched. Therefore, the P / S pump is disconnected from the output shaft and the conductive belt is replaced.
JP 2006-132391 A

  However, since the hydraulic piping is connected to the P / S pump and it is installed in a narrow place in the vehicle, the work of removing and installing the P / S pump from the output shaft is troublesome. It was time consuming and cumbersome. In addition, if the rotation center of the input shaft of the P / S pump and the rotation center of the output shaft of the auxiliary motor are not exactly matched, vibration and noise will be generated from the P / S pump during operation. However, the work requires a wrench in a narrow area, and the workability is not good.In addition, if a member is arranged in front, the tip of the wrench and the position of the bolt are difficult to see, and there is a problem that accurate work is difficult. It was.

  The present invention solves the above-mentioned problem, a driven member such as a P / S pump is attached to the front of the output shaft, and the conductive belt stretched over the pulley of the output shaft can be easily replaced, and the P / S pump An object of the present invention is to provide a conductive belt drive mechanism capable of accurately reattaching the belt.

  In order to solve the above-mentioned problems, the present invention is configured as follows.

1. A driving electric motor mounted on a vehicle body, a coupling body provided at an output shaft tip of the driving electric motor, a driven member connected to the coupling body via a coupling flange, A pulley provided on the output shaft base end side of the output shaft from the coupling body, a conduction belt that is hung on the pulley and connects another auxiliary device to the output shaft, and the driven member are fixed. And a bracket that is fixed to the vehicle body side and to which the stay is attached face to face.
Furthermore, the bracket and the stay each have a notch, and when the driven member is attached to the bracket via the stay, the notch is overlapped, and the overlapped portion is connected to the coupling body. The conductive belt drive mechanism is configured by forming a work hole that allows the fastening bolt for fastening the coupling flange to be attached and detached from the driven member side.

  2. The conduction belt drive mechanism according to claim 1, wherein the positioning member includes a positioning knock pin attached to one of the stay and the bracket, and the positioning knock pin formed on the other of the stay and the bracket. The positioning member is provided at at least two positions of the stay and the bracket, and the stay is positioned at a predetermined position of the bracket by the positioning member. .

  3. The conductive belt drive mechanism according to 3 or 2, wherein the positioning notch of one positioning member of the positioning members is formed in a mountain shape, and the positioning notch of the other positioning member is the positioning notch. A positioning notch formed in a predetermined linear shape having a width larger than the pin diameter of the knock pin for engagement and engaging with the positioning knock pin corresponding to the positioning notch, and Is supported in the rotation direction about the positioning knock pin, and the positioning notch formed with the predetermined notch is engaged with the positioning knock pin corresponding to the positioning notch. Thus, the stay is positioned at a predetermined position of the bracket.

  4. The transmission belt drive mechanism according to any one of claims 4 and 3, wherein the bracket is provided on a side of the coupling body from the main wall, the main wall being disposed substantially perpendicular to the output shaft, to which the stay is attached. A side wall and a window on the side wall, and fastening bolts for fastening the coupling body and the coupling flange can be confirmed from the side of the drive electric motor through the window. It was.

  5. The transmission belt drive mechanism according to claim 5, wherein a first hole that penetrates the support plate in a front-back direction is provided in a support plate in which the stay is attached to the bracket, and the first hole is formed in the coupling flange. A second hole corresponding to the first hole and the second hole through which a bar material continuous is inserted, and the fastening bolt for fastening the coupling body and the coupling flange is attached and detached. It was decided to prevent the coupling flange from being rotated.

The conductive belt drive mechanism according to the present invention has the following effects.
Since the output shaft of the driving electric motor and the driven member can be separated by the coupling composed of the coupling main body and the coupling flange, it is easy to replace the conductive belt stretched around the output shaft. Maintenance can also be facilitated by driving a plurality of vehicle auxiliary machines by passing a transmission belt around one auxiliary electric motor.

  The work hole is formed by the notch, and the fastening bolt for fastening the coupling body and the coupling flange can be attached and detached from the driven member side, so that the conductive belt can be easily replaced.

  The input shaft of the driven member and the rotation center of the output shaft of the auxiliary electric motor can be easily and accurately matched by the positioning member provided on the stay and the bracket.

  With the positioning notch formed in the chevron, the rotational center of the input shaft of the driven member is set to be located on the circumference centered on the positioning knock pin, and the other positioning member Since the rotation center of the input shaft can be accurately positioned at a predetermined position, the rotation center of the input shaft of the driven member and the output shaft of the auxiliary machine electric motor can be accurately and easily matched.

  Since a window is provided on the side wall of the bracket and the fastening bolt for fastening the coupling body and the coupling flange through the window can be confirmed from the side of the electric motor for driving, the coupling body and Separation from the coupling flange and fastening work can be performed easily and reliably. Further, since the work can be performed while directly observing, the rotation center of the input shaft of the driven member and the output shaft of the auxiliary machine electric motor can be made to coincide with each other accurately, and the occurrence of vibration and the increase of the driving resistance can be prevented.

  The coupling body and the coupling flange can be prevented from being rotated by inserting a continuous bar through the first hole provided in the support plate and the second hole provided in the coupling flange. The attaching / detaching operation of the fastening bolt that is fastened can be easily and reliably performed.

An embodiment of a transmission belt drive mechanism for a vehicle according to the present invention will be described with reference to the drawings.
FIG. 1 shows an outline of a large-sized route bus (hereinafter referred to as “HEV bus”) of a series hybrid vehicle. In the following description, the traveling direction of the vehicle is defined as the front, the left and right are determined with respect to the front, the direction of gravity is defined as the downward direction, the side toward the center of the vehicle is defined as the inner direction, and the opposite is defined as the outer direction.

  The HEV bus 10 has a driver's seat 12 at the front of the vehicle, a battery unit 14 at the ceiling of the vehicle, a fuel tank 17 at the bottom of the vehicle, and an electric motor 16 for traveling, an engine 18, as shown in FIG. A generator 19, an accessory unit 20 as a conduction belt drive mechanism, a radiator 23, and the like are provided.

  The battery unit 14 includes a plurality of rechargeable batteries such as lithium ion batteries, and the output voltage is about 600V. A traveling inverter 22 for the traveling electric motor 16 and an auxiliary inverter 24 for the auxiliary unit 20 are mounted on the upper rear portion of the vehicle, and are connected to the battery unit 14, respectively. In addition, in the battery part 14, the kind of rechargeable battery, a battery voltage, the installation position of the battery part 14, etc. are not restricted to this.

  The engine 18 is a diesel engine and is operated using fuel stored in the fuel tank 17. The generator 19 is directly connected to the engine 18 via a speed increaser, and power is generated when the engine 18 is operated. The engine 18 is set in advance so as to operate in the most efficient state for driving the generator 19. The engine 18 is connected to a control device (not shown). If the main switch of the HEV bus 10 is in an on state, the engine 18 is repeatedly operated and stopped according to instructions from the control device regardless of the travel of the HEV bus 10. It is. The control device detects a change in the state of charge in the battery unit 14, and mainly instructs the operation of the engine 18, that is, the start and stop of power generation by the generator 19 according to the value. The engine 18 is not limited to a diesel engine, and may be an engine using gasoline or other fuel.

  The radiator 23 is provided on the left side of the engine 18, and is a radiator fan (not shown), taking outside air into the HEV bus 10 through the opening of the left side wall 11 provided on the left side of the HEV bus 10. The heated cooling water is circulated through the engine 18 to be cooled. The outside air taken in by the radiator fan is discharged outside the vehicle through the heat exhaust port (not shown) of the rear wall 15 provided under the HEV bus 10 or behind the HEV bus 10.

  Two traveling electric motors 16 are connected in parallel to a speed reducer (not shown), and a propeller shaft extends from the speed reducer to the differential mechanism 26 and is connected to the axle of the rear wheel 30 via the differential mechanism 26. ing. The traveling electric motor 16 is connected to the power line from the traveling inverter 22, and is driven by being supplied with electric power from the traveling inverter 22 in accordance with the driving operation at the driver seat 12.

  The traveling electric motor 16 is driven by using only the power from the battery unit 14 via the traveling inverter 22 as power supply power, and is also driven by combining the power generated by the generator 19 with the power from the battery unit 14. Furthermore, it is set so that it can be driven by only the electric power generated by the generator 19 and can travel on the HEV bus 10.

  Further, the headlamp 32, the direction indicator 34, the tail lamp, and other vehicle electrical equipment related to the vehicle body provided in the HEV bus 10 are basically the same as those used in the conventional large bus. The HEV bus 10 is equipped with a 24V vehicle battery (not shown) for operating the vehicle electrical devices. Further, the HEV bus 10 includes a DC-DC converter (not shown) in the battery unit 14, converts the electricity in the battery unit 14 into a voltage of 24V by the DC-DC converter, and charges the vehicle battery. At the same time, electric power is supplied to the vehicle electrical equipment of the HEV bus 10.

  Next, the auxiliary machine unit 20 will be described. As shown in FIGS. 3 and 4, the auxiliary unit 20 includes an auxiliary motor 40, a power steering oil pump (hereinafter referred to as “P / S pump”) 42 as a driven member, and an air compressor. 44, air conditioner compressors 46 and 48, a base 52 on which these auxiliary machines are mounted, and the like. FIG. 3 is a plan view showing the auxiliary machine unit 20 from above, and FIG. 4 is a side view showing the auxiliary machine unit 20 from the inside of the HEV bus 10.

  The base 52 is a metal plate member, and is installed above the generator 19 on the right side in the engine room 50 provided behind the HEV bus 10 as shown in FIG. The engine room 50 has a vertical wall 21 (shown in phantom) between the traveling electric motor 16 and the engine 18 in the front, and a left side wall 11 and a right side wall 13 of the HEV bus 10 in the left and right direction. The space just in the shape of a rectangular parallelepiped surrounded by the rear wall 15 of the HEV bus 10 is located immediately below and behind the inverter 22 for the vehicle.

  The auxiliary motor 40 is an electric motor. As shown in FIG. 3, the first output shaft 61 and the second output shaft 63 are projected in the front and back directions, and the output shaft is mounted on the base 52 in the vehicle. It is fixed along the left-right direction. The auxiliary motor 40 is connected to the auxiliary inverter 24. When the main switch of the HEV bus 10 is turned on, the auxiliary motor 40 is operated regardless of the running of the HEV 10 or the operation of the engine 18. The electric power output from 24 is always driven at a constant rotational speed basically.

  A first pulley 74 is attached via an electromagnetic clutch 72 to the first output shaft 61 that protrudes to the vehicle right side (the lower side in FIG. 3) of the auxiliary motor 40. A third belt 76 is hung on the first pulley 74. The third belt 76 is wound around the tension adjusting pulley 77 and the input shaft of the air compressor 44, and the air compressor 44 and the auxiliary motor 40 are connected by the third belt 76.

  The air compressor 44 is, for example, a scroll compressor, and compresses the sucked air to a predetermined pressure. The air compressed by the air compressor 44 is sent to an air tank (not shown) through the air pipe 47 and stored. The air tank is provided with a pressure gauge for measuring the pressure inside the tank, and the pressure gauge is connected to a control device. The control device has a threshold value of the pressure inside the air tank, compares the pressure value of the air tank measured by the pressure gauge with the threshold value, and sends a power transmission connection / disconnection instruction to the electromagnetic clutch 72 according to the comparison result.

  Further, a shielding member 80 is provided outside the air compressor 44. The shielding member 80 is a metal box, is attached to the upper surface of the base 52, and covers almost the entire air compressor 44 except for the input shaft portion of the air compressor 44. An inflow port 82 is formed on the right side wall of the shielding member 80 and an outflow port 84 is formed on the rear wall. A heat insulating material (not shown) is attached to at least the wall surface of the shielding member 80 on the engine 18 side. It has been.

  A P / S pump 42 and the like are attached to the second output shaft 63 protruding to the vehicle left side (upper side in FIG. 3) of the auxiliary motor 40. The P / S pump 42 is a pressure feed pump that sends operating oil to a power steering mechanism (not shown) at a predetermined pressure, and is mounted on the base 52 via a support plate 43. The P / S pump 42 is mounted on the vehicle inner side (left side), and its input shaft is directly connected to the tip of the second output shaft 63 of the auxiliary motor 40 via the coupling 45. Has been.

  A pulley A60 and a pulley B62 are fixed between the coupling 45 of the second output shaft 63 and the auxiliary motor 40. A first belt 64 is hung on the pulley A60, and a second belt 66 is hung on the pulley B62. The first belt 64 is wound around a rear compressor 46 for an air conditioner and a tension adjusting pulley 67 (see FIG. 4), and the rear compressor 46 and the auxiliary motor 40 are connected to each other. The second belt 66 is wound around a front compressor 48 for an air conditioner and a tension adjusting pulley 68, and the front compressor 48 and the auxiliary motor 40 are connected to each other. Note that the pulley A60 and the pulley B62 may be formed integrally, or may be individually formed and attached separately.

  Further, a first electromagnetic clutch 54 is provided on the input shaft of the rear compressor 46, and a second electromagnetic clutch 56 is provided on the input shaft of the front compressor 48. When these first electromagnetic clutches 54 and the like are operated based on control from the control device, the rear compressor 46 and the front compressor 48 are connected to the power from the auxiliary motor 40 or the power transmission is interrupted. It has become so.

  Next, the mounting structure of the P / S pump 42 will be described in detail. The P / S pump 42 is fixed to the support plate 43 as described above, and the input shaft is connected to the second output shaft 63 of the auxiliary motor 40 via the coupling 45.

As shown in FIG. 5, the support plate 43 includes an oil pump bracket 71 as a bracket and an oil pump stay 73 as a stay.
The oil pump bracket 71 includes a main wall 75 and side walls 78 provided on both sides of the main wall 75, and the main wall 75 and the side walls 78 are formed in a substantially U shape in plan view. The oil pump bracket 71 has a notch for positioning on the bottom plate, and is fitted to a protrusion (none of which is shown) provided on the base 52 to be accurately attached to a predetermined position of the base 52. It is done.

  The main wall 75 has a cutout 79 formed upward from the center portion, and has a shape including support arms 81 extending upward on both the left and right sides by the cutout 79. The side wall 78 is a substantially right triangle, and is provided continuously from the vicinity of the upper end of the support arm 81 to the lower part of the oil pump bracket 71. Further, a window 83 is formed on the side wall 78 so that a fastening bolt attaching / detaching operation described later can be confirmed through the window 83. The window 83 is formed at least on the side wall 78 on the rear side of the HEV bus 10.

  The main wall 75 of the oil pump bracket 71 is provided with a bolt hole 85 and a positioning knock pin 87. The bolt holes 85 are provided at four locations, female threads are formed on the inner surface, and the fixing bolts 89 are screwed together. The knock pin 87 is a cylindrical body and is provided at two locations in a state of protruding from the main wall 75, corresponding to a notch 110 or the like of an oil pump stay 73 described later.

  The oil pump stay 73 has a flat plate shape, a notch 99 is formed at the lower edge, and the P / S pump 42 is fixed to the center by a mounting screw 91. The P / S pump 42 is basically not attached to or detached from the oil pump stay 73, and is fixed in a state of being accurately positioned in a mounting hole 95 (see FIG. 10) formed in the oil pump stay 73. .

  The oil pump stay 73 is provided with positioning notches 110 and 112 at two lower positions. The notch 110 provided on the right side of the figure is formed in a mountain shape, and the top of the mountain shape is substantially semicircular and is formed along the outer peripheral surface of the cylindrical body of the knock pin 87. Further, the notch 112 provided on the left is formed in a straight line (predetermined line shape) that is convex upward and parallel to the mounting surface of the base 52. The positioning notches 110 and 112 are respectively formed corresponding to the knock pins 87. When the positioning notches 110 and 112 are respectively engaged with the knock pins 87, the P / S pump 42 is in a predetermined position, that is, P The input shaft of the / S pump 42 and the second output shaft 63 are set so as to coincide with the center of rotation.

  At the four corners of the oil pump stay 73, attachment holes 114 are formed. The mounting hole 114 has a diameter sufficient for the fixing bolt 89 to pass therethrough, and is formed corresponding to the bolt hole 85. The oil pump stay 73 is formed with a fixing hole 116 (see FIG. 4) as a first hole in the vicinity of the P / S pump 42.

  Next, the coupling 45 will be described. As shown in FIG. 6, the coupling 45 includes a coupling body 120, a coupling flange 122, a screw plate 124, a fastening bolt 126, and the like.

  As shown in FIGS. 7 and 8, the coupling body 120 includes a cylindrical outer cylinder 128, a center cylinder 130, arms 132 extending radially from the center cylinder 130, and an inner surface of the outer cylinder 128. And the elastic member 136 filled between the arm part 132 and the fixing part 134.

  The outer cylinder 128 is a metal disk-like member, and has a side plate 129 formed on one end surface with a predetermined width from the outer peripheral end toward the center.

  The central cylinder 130 is cylindrical, and the inner surface is formed with a diameter to which the tip of the second output shaft 63 is assembled. A key groove 131 is formed in the axial direction on the inner surface of the central cylinder 130, and the second is assembled to the inner surface of the central cylinder 130 by inserting a key 133 (see FIG. 10) into the key groove 131. The output shaft 63 is prevented from rotating. The arm portions 132 are equally provided radially from the central cylindrical body 130 at three locations of the central cylindrical body 130. The arm portion 132 is formed without the outer peripheral end thereof being in contact with the inner surface of the outer cylindrical body 128.

  The fixing portion 134 has a triangular prism shape, and is provided at three positions equally between the arm portions 132. The fixing part 134 is integrally fixed to the inner surface of the outer cylinder 128, and the inner peripheral end thereof is not in contact with the center cylinder 130. The fixing portion 134 is provided with a mounting hole 140 penetrating in the direction perpendicular to the paper surface (FIG. 7). The elastic body 136 is made of a rubber material having moderate elasticity, and is not in contact with either the inner peripheral surface of the outer cylindrical body 128 or the outer peripheral surface of the central cylindrical body 130 between the arm portion 132 and the fixed portion 134. Filled.

  As shown in FIG. 9, the screw plate 124 has a flat ring shape, and a hole 141 through which the second output shaft 63 passes is formed at the center. Female screw portions 142 are attached to the screw plate 124 at three locations corresponding to the attachment holes 140 of the coupling body 120. The female threaded portion 142 is cylindrical, and the outer shape is formed so as to fit in the mounting hole 140 without rattling. Further, an internal thread that is screwed into the fastening bolt 126 is formed on the inner surface of the internal thread portion 142. The female screw portion 142 may be formed through the screw plate 124 or may be formed without penetrating.

  As shown in FIG. 6, the coupling flange 122 has a disk shape and is fixed to the input shaft of the P / S pump 42 by being screwed into the hole 149 at the center. The coupling flange 122 has three attachment holes 150 formed on the same circumference as the center of the coupling flange 122 corresponding to the attachment holes 140 of the coupling body 120. In addition, a stop hole 152 as a second hole is provided in the vicinity of each mounting hole 150. FIG. 10 shows a state where the P / S pump 42 is fixed on the base 52 via the support plate 43 and the P / S pump 42 is attached to the second output shaft 63 via the coupling 45. Show.

  Next, an operation for replacing the first belt 64 and the second belt 66 will be described.

  As described above, the auxiliary machine unit 20 is installed on the right rear side of the HEV bus 10 with the P / S pump 42 disposed on the back side of the HEV bus 10. In exchanging the first belt 64 and the second belt 66, first, the lid provided on the right side wall 13 of the vehicle and the lid (not shown) provided on the rear wall 15 are opened.

  A metal rod, screwdriver, or the like (not shown) is inserted into the fixing hole 116, and its tip is engaged with a stop hole 152 provided in the coupling flange 122.

  Next, a hexagonal ratchet wrench (see FIG. 4) is formed in the working hole 160 (see FIG. 4) formed by the notch 79 formed in the oil pump bracket 71 and the notch 99 formed in the oil pump stay 73. Etc.) and the fastening bolt 126 is loosened. Since the fastening bolts 126 are provided at three locations, the coupling bolts are gradually loosened while rotating the coupling 45. When the fastening bolt 126 is loosened, a metal rod is inserted into the fixing hole 116 and the stop hole 152 as described above to prevent the coupling 45 from being rotated.

  If each fastening bolt 126 is removed from the coupling 45, the coupling 45 will be in the divided state. Next, the four fixing bolts 89 are loosened. When the fixing bolt 89 is removed, the P / S pump 42 is separated from the oil pump bracket 71 together with the oil pump stay 73.

  FIG. 11 shows a state where the P / S pump 42 is moved from the oil pump bracket 71 in a substantially horizontal direction. Thus, when the P / S pump 42 is moved to the left of the HEV bus 10, a gap a is formed between the coupling flange 122 and the coupling body 120. The first belt 64 removed from the pulley A 60 is removed from the accessory unit 20 through the gap a.

  In contrast, when the first belt 64 is removed, the new transmission belt passes through the gap a formed between the coupling flange 122 and the coupling body 120 and passes through the coupling body 120 to the pulley A60. Multiply.

Next, the installation work of the P / S pump 42 will be described.
The positioning notches 110 and 112 of the oil pump stay 73 are engaged with positioning knock pins 87 provided in the oil pump bracket 71. When the positioning notches 110 and 112 are accurately engaged with the knock pin 87, the oil pump stay 73 is fixed to the oil pump bracket 71 with the fixing bolt 89.

  If the oil pump stay 73 is fixed to the oil pump bracket 71, the coupling flange 122 and the coupling body 120 are connected through the working hole 160. Specifically, the mounting hole 150 of the coupling flange 122 and the mounting hole 140 of the coupling main body 120 are matched, and the fastening bolt 126 is inserted. Since the female screw portion 142 of the screw plate 124 is fitted in the mounting hole 140, when the fastening bolt 126 is rotated and fastened in the screwing direction, the coupling flange 122 and the screw plate 124 sandwich the coupling body 120. It is fixed with.

  As a result, the second output shaft 63 of the auxiliary motor 40 and the input shaft of the P / S pump 42 are connected. Furthermore, since the oil pump stay 73 is fixed to the oil pump bracket 71 via an alignment member, the second output shaft 63 of the auxiliary motor 40 and the input shaft of the P / S pump 42 have a rotation center. Concatenated in a matched state.

  Further, since the notch 112 is formed in parallel to the base 52, an error in the distance from the notch 110 formed in a mountain shape to the position where the notch 112 and the knock pin 87 are engaged. However, the installation height of the rotation center of the input shaft of the P / S pump 42 is not affected.

  Further, the attaching / detaching operation of the fastening bolt 126 is performed from the lid of the rear wall 15 of the HEV bus 10, but the operation is performed on the P / S pump 42 side by the notches 79 and 99 of the oil pump stay 73 and the oil pump bracket 71. A hole 83 is formed on the side wall 78 of the oil pump bracket 71, and the tip of a wrench inserted from the work hole 160 and the head of the fastening bolt 126 can be observed during the operation. You can proceed to work.

  In the above row, the auxiliary machine unit 20 of the HEV bus 10 has been described as an example. However, the present invention is not limited to the above example, and an electric belt drive mechanism having the same configuration as the auxiliary machine unit 20 is used. Can be applied. For example, instead of the P / S pump 42, it is possible to mount a 24V generator.

It is a perspective view which shows the HEV bus | bath provided with one Embodiment of the conduction belt drive mechanism concerning this invention. It is a perspective view which shows an engine room. It is a top view which shows an auxiliary machine unit. It is a side view which shows an auxiliary machine unit. It is a disassembled perspective view which shows a P / S pump. It is a disassembled perspective view which shows a coupling. It is a front view which shows a coupling main body. It is a side view which shows a coupling main body. It is a front view which shows a screw plate. It is a side view which shows the attachment state of a P / S pump. It is a side view which shows the attachment state of a P / S pump.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... HEV bus 14 ... Battery part 16 ... Electric motor 18 for driving | running | working 18 ... Engine 20 ... Auxiliary machine unit 40 ... Motor for auxiliary machines 42 ... Power steering pump 52 ... Base 60 ... Pulley A
62 ... Pulley B
63 ... second output shaft 64 ... first belt 66 ... second belt 71 ... oil pump bracket 73 ... oil pump stay 75 ... main wall 78 ... side wall 79 ... notch 83 ... window 87 ... knock pin 99 ... notch Numeral 116 ... Fixing hole 120 ... Coupling body 122 ... Coupling flange 124 ... Screw plate 126 ... Fastening bolt 129 ... Side plate 152 ... Stop hole 160 ... Working hole

Claims (5)

An electric motor for driving mounted on the vehicle body;
A coupling body provided at the tip of the output shaft of the electric motor for driving;
A driven member connected to the coupling body via a coupling flange;
A pulley provided on the output shaft base end side of the output shaft from the coupling body;
A transmission belt that is hung on the pulley and connects another auxiliary device to the output shaft;
A stay to which the driven member is fixed;
A bracket that is fixed to the vehicle body side and that the stay is attached to face to face,
Furthermore, the bracket and the stay each have a notch, and when the driven member is attached to the bracket via the stay, the notch is overlapped, and the overlapped portion is connected to the coupling body. A conduction belt drive mechanism, wherein a working hole is formed to allow a fastening bolt for fastening the coupling flange to be attached and detached from the driven member side.   The positioning member includes a positioning knock pin attached to one of the stay and the bracket, and a positioning notch that is formed on the other of the stay and the bracket and engages with the positioning knock pin. 2. The conductive belt drive mechanism according to claim 1, wherein the positioning member is provided in at least two locations of the stay and the bracket, and the stay is positioned at a predetermined position of the bracket by the positioning member. . The positioning notch of one positioning member of the positioning members is formed in a mountain shape,
The positioning notch of the other positioning member is formed with a width larger than the pin diameter of the positioning knock pin and in a predetermined line shape,
The positioning notch formed in the chevron is engaged with the positioning knock pin corresponding to the positioning notch, and the stay is supported in the rotation direction around the positioning knock pin. The stay is positioned at a predetermined position of the bracket by engaging a positioning notch formed with a linear notch with the positioning knock pin corresponding to the positioning notch. The conduction belt drive mechanism according to claim 2. The bracket includes a main wall disposed substantially perpendicular to the output shaft, to which the stay is attached, and a side wall provided on the coupling body side from the main wall,
Further, a window portion is provided on the side wall, and the attaching / detaching operation of the fastening bolt for fastening the coupling body and the coupling flange can be confirmed from the side of the driving electric motor through the window portion. The conduction belt drive mechanism according to claim 3, wherein   The support plate having the stay attached to the bracket is provided with a first hole penetrating the support plate in the front and back direction, and the coupling flange is provided with a second hole corresponding to the first hole. A continuous bar is inserted through the first hole and the second hole to prevent the coupling flange from being rotated when the fastening bolt for fastening the coupling body and the coupling flange is attached or detached. The conductive belt drive mechanism according to claim 4.

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