JP4151348B2 - Rotating machine for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotating machine such as a vehicle AC generator mounted on a passenger car, a truck, or the like.
[0002]
[Prior art]
The vehicular engine is equipped with many rotating machines such as an AC generator and various pumps, and many wirings and pipes are wound around. If these wires and pipes are too long, problems such as disconnection are likely to occur due to vibration or the like, so they are partially fixed to the vehicle body, a part of the rotating machine, or the engine body.
[0003]
On the other hand, there is a case where an engine is bought and sold for the purpose of reducing development cost or recovery. Depending on the design of the engine and the wiring and piping of a rotating machine to be retrofitted, the wiring and piping may be fixed to the engine body. It can be difficult. In such a case, the necessity for fixing wiring and piping using a rotating machine mounted on the engine is increased. In addition, there are cases where the user additionally installs electrical and electronic parts in the engine room for the sake of convenience and running performance. In such cases, it would be very difficult if the wiring and piping could be fixed to the rotating machine. Convenient.
[0004]
[Problems to be solved by the invention]
Conventionally, when it is necessary to provide a fixing part for wiring etc. in the rotating machine due to the demands on the design of wiring and piping, a wiring piping fixing terminal as a separate part is provided and fixed using bolts, nuts, etc. Although there is a method, the increase in the number of parts and the increase in the number of assembling steps due to the complexity of the structure are the cause of cost increase.
[0005]
In addition, a method of fixing wiring etc. by providing a hole in the resin-molded rear cover and fixing the harness clamp by snap-fit has been used in the past, but snap-fit when repairing at the time of vehicle assembly or repair in the market In order to remove the fixed harness clamp without destroying it, it is necessary to elastically deform the inside of the fixed portion protruding into the rear cover. For this purpose, the rear cover must be removed, which requires a large number of man-hours. . Moreover, if an operator who is not familiar with the structure around the fixed part easily turns the harness clamp, not only will the harness clamp be damaged, but the damaged part will fall into the rotating machine and cause a serious failure. There is also a fear.
[0006]
Also, in general, many vehicle rotating machines such as a vehicle AC generator are air-cooled, and a connection portion with a vehicle such as an electric terminal that needs to be fixed is close to an electrical component and is particularly cooled. In many cases, it is necessary to ensure the performance, and if the harness clamp is easily attached, the ventilation window for the cooling air of the rotating machine may be blocked and the cooling performance may be impaired.
[0007]
The present invention was created in view of the above points, and an object of the present invention is to provide a rotating machine that has a simple structure and can easily remove a fixing portion such as a wiring without impairing cooling performance. It is to provide.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, a vehicle rotating machine according to the present invention includes an outer shell portion that is attached to a vehicle engine and holds or protects internal components, and the outer shell portion is a ventilation unit that ventilates the inside and outside. A window and a projecting portion that is continuously formed and protrudes with respect to the periphery, and the projecting portion includes a holding portion having a side opening that is formed at least partially from the ventilation window, and a central portion. And a flat surface portion in which a flat back surface portion is formed on the back side around the hole. This produces the following effects.
-Since the projecting part that is continuously formed from the other part of the outer shell part where the ventilation window is formed and can be used as the fixing part of the wiring pipe, the ventilation window is closed by the wiring pipe etc. Can be prevented from being damaged.
・ Since the outer shell has sufficient strength to hold or protect the vehicle rotary machine itself that is directly connected to the engine, withstanding the vibration of the engine, the projecting portion is placed on this outer shell. Thus, the wiring piping can be firmly fixed.
-By fixing the wiring piping to a vehicular rotating machine whose temperature is relatively lower than that of the engine body, the wiring piping can be protected from damage due to thermal deterioration.
-Since the protrusion is formed continuously from the periphery thereof, no additional parts are required for fixing the harness clamp or the like, and an increase in cost due to an increase in the number of parts and the number of assembling steps can be avoided.
・ Even if it is not necessary to fix a harness clamp or the like when the vehicle is shipped, the vehicle owner may need to install additional electrical and electronic parts in the engine room to improve convenience and running performance. It becomes easy to fix a harness clamp or the like to the rotary machine.
-Since the hole and side opening part of a protrusion part are originally formed in the vicinity of the position where the ventilation window is formed, generation | occurrence | production of the malfunction resulting from the foreign material penetration | invasion by adding these can be avoided.
[0009]
In addition, it further includes a harness clamp that holds the wiring pipe, and includes a seat portion that sits on the flat portion described above, a snap fit portion that protrudes from the seat portion and is easily deformed and has a large diameter portion on the distal end side, It is desirable to fix the snap fit portion to the outer shell by seating the snap fit portion through the hole, the seat portion on the flat surface portion, and the large diameter portion on the back surface portion. Since at least a part of the holding part has a side opening that penetrates the outer shell, it is easy to elastically deform the large diameter part of the snap fit part from the outside. Sometimes, the harness clamp fixed by the snap-fit portion can be easily removed.
[0010]
In addition, a rotor that is rotatably held, a stator that encloses the rotor, a rectifier that rectifies the output of the stator, and a voltage controller that controls the output voltage of the rectifier, A rotating machine for a vehicle that generates electric power by being driven to rotate, the rotor having a cooling fan, and the outer shell having a ventilation window at a position for cooling at least a part of the rectifier or the voltage controller. Is desirable. Thereby, even if it is a case where a protrusion part is provided, it becomes possible to ensure the cooling property of the rectifier which is a heat generating body, or a voltage control apparatus.
[0011]
In addition, the rotor and the stator described above are contained and held, the rectifying device and the voltage control device are held outside one end side of the rotating shaft of the rotor, and a discharge window for discharging cooling air from the cooling fan is provided. It is desirable to further include a frame, and a resin rear cover as an outer shell protecting the rectifier and the voltage control device. Thus, since the protrusion is disposed on the intake side where the pressure fluctuation is relatively small, an increase in fan noise can be prevented as compared with the case where the protrusion is disposed on the discharge side. In addition, the use of a resin rear cover facilitates manufacturing. Furthermore, when a generator is considered as a vehicular rotating machine, the output line extending from the rectifying device becomes relatively thick and the wiring for the voltage control device increases, but it is compared with the connection part (output terminal) of these lines. By fixing the output line or the like with the protruding portion provided at a close position, the relative vibration between the connecting portion and the fixed portion can be reduced, and the stress applied to the output line or the like can be reduced.
[0012]
Further, it is desirable that the above-described rear cover be formed thicker than the periphery between the fixed portion fixed to the frame and the protruding portion. Thereby, the rigidity of a protrusion part can be improved and the reliability of the fixing | fixed part of wiring piping can be improved.
In addition, the above-described rear cover has a bowl shape having an opening, and the ventilation window and the side opening provided in the rear cover are desirably opened in the opening direction of the bowl. As a result, the rear cover can be manufactured by forming the one-way mold, and the manufacturing cost can be reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an AC generator for a vehicle according to an embodiment to which the present invention is applied will be described in detail with reference to the drawings.
FIG. 1 is a diagram illustrating an overall configuration of a vehicle AC generator according to the present embodiment. FIG. 2 is a view of the vehicular generator according to the present embodiment as viewed from the rear side. 1 and 2 includes a front frame 1, a rear frame 2, a stator 4, a rotor 10, a rectifier 24, a voltage controller 25, a brush device 26, a rear cover 27, and the like. It is configured to include.
[0014]
Both the front side frame 1 and the rear side frame 2 have a bowl shape, and are fixed to each other by a plurality of bolts 3 in a state where these openings are in direct contact with each other. A stator 4 is fixed to the inner periphery of the front side frame 1. A cylindrical bearing box 7 is integrally formed on the front side frame 1, and an iron bearing box 8 is attached to the rear side frame 2 by bolts 9 having knurling.
[0015]
The stator 4 includes a stator core 5 and a stator winding 6.
The rotor 10 includes a field winding 11, pole cores 12 and 13, a rotation shaft 14, and the like, and is rotatably held by a pair of bearings 15 and 16 fixed to the bearing boxes 7 and 8. Centrifugal cooling fans 17 and 18 are attached to the axial end surfaces of the pole cores 12 and 13. The cooling fan 17 on the front side is a mixed flow type in which the blades are inclined forward with respect to the rotation direction of the rotor 10 in order to generate cooling air to the field winding 11. A pulley 19 is coupled to the front end of the rotating shaft 14 by a nut 20 and is driven to rotate by a vehicle engine (not shown). Further, a pair of slip rings 21 and 22 are provided at the rear end of the rotating shaft 14 located outside the rear side frame 2 and are electrically connected to the field winding 11.
[0016]
So-called electrical components such as the rectifying device 24, the voltage control device 25, and the brush device 26 are fixed to the outer axial end surface of the rear frame 2 by fixing means such as bolts 9 and the like. The rectifier 24 rectifies and converts a three-phase AC voltage, which is an output voltage of the three-phase stator winding 6, into a DC output voltage, for example. The voltage control device 25 controls the output voltage of the vehicle AC generator 100 by adjusting the excitation current flowing through the field winding 11. The brush device 26 is for flowing an exciting current from the rectifying device 24 to the field winding 11 of the rotor 10, and presses each of the slip rings 21 and 22 formed on the rotating shaft 14 of the rotor 10. Has a brush.
[0017]
The rear cover 27 is an outer shell made of resin and covers and protects internal components such as the rectifier 24, the voltage controller 25, and the brush device 26 that are attached to the outside of the rear frame 2. The rear cover 27 is fastened and fixed to a bolt 9 extending from the rear frame 2 by a nut 28 in a state where the rectifier 24 is sandwiched. The rear cover 27 has a ventilation window 29 formed concentrically around the brush device 26. The rear cover 27 is provided with a protrusion 120 for attaching a harness clamp (described later) for fixing the wiring pipe. The detailed structure around the protrusion 120 will be described later.
[0018]
In the vehicular AC generator 100 having the above-described structure, when the rotational force from the vehicle engine is transmitted to the pulley 19 via a belt or the like, the rotor 10 rotates in a predetermined direction. In this state, by applying an excitation voltage from the outside to the field winding 11 of the rotor 10, the claw portions of the pole cores 12 and 13 are excited to generate a three-phase AC voltage in the stator winding 6. A predetermined direct current is taken out from an output terminal provided in the rectifier 24.
[0019]
Next, the detailed structure around the protrusion 120 provided on the rear cover 27 will be described. FIG. 3 is an enlarged cross-sectional view taken along line III-III shown in FIG. 2, and shows a detailed cross section of the protrusion 120. 4 is a partially enlarged view of the protruding portion 120 as viewed from the P direction of FIG.
[0020]
As shown in FIGS. 2 and 3, the rear side of the rear cover 27 (the outer side opposite to the side where various electrical components such as the rectifying device 24 are housed) is a protrusion that is continuously formed and protrudes from the surrounding portion. 120 is formed. The protrusion 120 has a holding part 122 and a flat part 124. A part of the holding part 122 is provided with a side opening 126 formed continuously with a part of the ventilation window 29 of the rear cover 27. By providing the side opening 126, it is possible to prevent deterioration of the cooling performance due to the decrease in the area of the ventilation window 29 due to the provision of the flat portion 124. Further, the flat surface portion 124 has a hole 128 that passes through the center portion, and a flat back surface portion 130 is formed on the back surface.
[0021]
A harness clamp 140 for fixing the wiring pipe is attached to the hole 128 provided in the flat portion 124 of the protruding portion 120 according to the convenience of the vehicle. For example, if a predetermined length is exceeded, problems such as disconnection occur due to vibration or the like, and therefore it is preferable that the vehicle body or a part of the vehicle alternator 100 or a motor main body is partially fixed. The harness clamp 140 is used when it is preferable to fix the wiring for additional installation of electrical and electronic parts in the engine room to a part of the vehicle alternator 100 in order to improve convenience and running performance. It is done.
[0022]
FIG. 5 is a perspective view showing the shape of the harness clamp 140. FIG. 6 is a cross-sectional view showing a state in which the harness clamp 140 is attached to the protruding portion 120 of the rear cover 27. As shown in FIGS. 5 and 6, the harness clamp 140 is easily protruded from the holding portion 142 that holds the wiring pipe 200, the seat portion 144 that is formed in a part of the holding portion 142, and the seat portion 144. And a snap fit portion 148 having a large diameter portion 146 on the distal end side.
[0023]
The harness clamp 140 is fixed to the rear cover 27 by passing the snap fit portion 148 through the hole 128 provided in the protruding portion 120. At this time, the harness clamp 140 is fixed by the seat 144 of the harness clamp 140 seated on the flat surface portion 124 of the projection 120 and the large-diameter portion 146 of the harness clamp 140 seated on the back surface 130 of the projection 120, respectively. Is called. Moreover, since this fixing is performed in the protrusion part 120 protruded from the main body of the rear cover 27, it is possible to prevent deterioration of the cooling performance due to the direct closing of the ventilation window 29 by the harness clamp 140 or the wiring piping.
[0024]
As described above, the projecting portion 120 that is continuously formed and protruded from the other part of the rear cover 27 in which the ventilation window is formed can be used as the fixing portion of the wiring pipe, and therefore, the ventilation window is blocked by the wiring pipe or the like. It is possible to prevent the cooling performance from being impaired. In particular, since the projecting portion 120 is continuously formed from the periphery thereof, additional parts are not required for fixing the harness clamp 140, and an increase in cost due to an increase in the number of parts and the number of assembling steps can be avoided. it can.
[0025]
Further, since the holding portion 122 of the projecting portion 120 is formed with a side opening 126 that penetrates the rear cover 27, the large-diameter portion 146 of the snap fit portion 148 can be easily elastically deformed from the outside. The harness clamp 140 fixed by the snap fit portion 148 can be easily removed at the time of assembling or repairing at the market.
[0026]
By the way, in the state where the harness clamp 140 is not attached, the hole 128 provided in the protruding portion 120 of the rear cover 27 is exposed, but by forming the protruding portion 120 at the place where the ventilation window 29 was originally formed, It is possible to prevent adverse effects due to external moisture.
[0027]
Further, since the protrusion 120 is formed in a substantially flat place, the rigidity is improved and the protection function by the rear cover 27 can be enhanced. Further, since the rear cover 27 is fixed by the bolt 9 and the nut 28, the projection of the rear cover 27 is formed by forming the connecting portion 150 between the peripheral portion of the bolt 9 and the protruding portion 120 to be thicker than the periphery thereof. The rigidity near the portion 120 can be further increased. Moreover, since the surface of the rear cover 27 is not deformed when the harness clamp 140 is attached and the axial position of the projecting portion 120 is not changed, there is an effect of improving the reliability when the harness clamp 140 is fixed.
[0028]
Further, the rear cover 27 is formed in a substantially bowl shape, and the rear cover 27 can be molded along the axial direction by opening the ventilation window 29 and the side opening 126 in the opening direction of the bowl shape. Therefore, good moldability can be realized.
[0029]
Further, in the vehicle alternator 100, the output line extending from the rectifying device 24 becomes relatively thick and the wiring for the voltage control device 25 increases, but the position is relatively close to the connection portion (output terminal) of these lines. By fixing the output line or the like with the projecting portion 120 provided on the connection portion, it is possible to reduce the relative vibration between the connection portion and the fixed portion, and it is possible to reduce the stress applied to the output line or the like.
[0030]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. In the embodiment described above, the protruding portion 120 is formed on a part of the rear cover 27, but may be formed on the front side frame 1 or the rear side frame 2.
[0031]
In the above-described embodiment, the vehicular AC generator 100 having a structure in which the rectifying device 24, the brush device 26, and the like are assembled on the outside of the rear frame 2 and covered with the rear cover 27 from the outside is described. The present invention can also be applied to a vehicle AC generator in which the rectifier 24 and the like are housed.
[0032]
Moreover, although embodiment mentioned above demonstrated AC generator 100 for vehicles as a rotary machine, you may apply this invention to various rotary machines, such as an electric motor and a compressor.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of an automotive alternator according to an embodiment.
FIG. 2 is a view of the vehicular generator of the present embodiment as viewed from the rear side.
3 is an enlarged sectional view taken along line III-III shown in FIG.
FIG. 4 is a partially enlarged view of a protrusion when viewed from a direction P in FIG.
FIG. 5 is a perspective view showing a shape of a harness clamp.
FIG. 6 is a cross-sectional view showing a state in which the harness clamp is attached to the protruding portion of the rear cover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front side frame 2 Rear side frame 4 Stator 10 Rotor 24 Rectifier 25 Voltage controller 26 Brush device 27 Rear cover 29 Ventilation window 120 Protruding part 122 Holding part 124 Plane part 126 Side opening 128 Hole 130 Back part 140 Harness clamp 142 Holding portion 144 Seat portion 146 Large diameter portion 148 Snap fit portion

Claims (5)

An outer shell portion that is attached to a vehicle engine and holds or protects internal components is provided. The outer shell portion is a ventilation window that ventilates the inside and outside, and a protruding portion that is continuously formed and protrudes from the surroundings. The projecting portion has a holding portion having a side opening portion at least partially formed continuously from the ventilation window, and a hole penetrating in the central portion, and a back side around the hole. Consists of a flat surface portion on which a flat back surface portion is formed ,
And further comprising a harness clamp that holds a wiring pipe, and includes a seat portion that is seated on the flat surface portion, a snap fit portion that protrudes from the seat portion and is easily deformed and has a large-diameter portion on the tip side The fitting portion passes through the hole, the seat portion is seated on the flat surface portion, and the large diameter portion is seated on the back surface portion, thereby fixing the snap fit portion to the outer shell,
The vehicular rotating machine, wherein the large-diameter portion of the snap fit portion can be elastically deformed from the outside through the side opening . In Claim 1 , the rotor hold | maintained rotatably, The stator which contains the said rotor, The rectifier which rectifies the output of the said stator, The voltage control apparatus which controls the output voltage of the said rectifier The rotor includes a cooling fan, and the outer shell is at least one of the rectifier or the voltage controller. A vehicular rotating machine comprising the ventilation window at a position for cooling the part. 3. The cooling device according to claim 2 , wherein the rotor and the stator are contained and held, the rectifier device and the voltage control device are held outside one end side of the rotating shaft of the rotor, and cooling air generated by the cooling fan. A vehicular rotating machine further comprising: a frame having a discharge window for discharging gas; and a resin-made rear cover that protects the rectifier and the voltage controller. 4. The vehicular rotating machine according to claim 3 , wherein the rear cover is formed to be thicker than the periphery between the fixed portion fixed to the frame and the protruding portion. According to claim 3 or 4, wherein the rear cover is formed in a bowl shape having an opening, the said ventilation window provided in the rear cover side opening that is open to the opening direction of the bowl-shaped A rotating machine for vehicles.

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