JP3080580U - Vehicle hydraulic system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To facilitate mounting by forming a portion including one surface in the vertical direction of an oil tank by metal die casting and forming a screw hole for mounting on one surface thereof, and to facilitate mounting, Keep the overall height of the device low. SOLUTION: This is a hydraulic device including an oil tank 1, a pump P for sucking and sending hydraulic oil in the oil tank, an electric motor M for driving the pump, and a housing covering the pump and the electric motor. The tank main body 2 including at least one vertical surface of the oil tank 1 is formed by metal die-casting, and one vertical surface of the oil tank forms one side surface of the housing, and is attached to the one side surface. A screw hole is formed. The oil tank 1 has a substantially rectangular parallelepiped shape, and the oil tank 1 is vertically fixed to a housing body 11 having a bottom surface.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a vehicle hydraulic device (power package) used as a hydraulic source for various hydraulic devices mounted on vehicles such as lorries.

[0002]

[Prior art]

 In a conventional vertical installation type hydraulic device, an electric motor, a pump, and an oil tank are vertically arranged in parallel. In other words, the electric motor and the pump were mounted upright on the oil tank. For this reason, the height of the entire hydraulic device is increased, and a vertical mounting space is required on the vehicle side, and depending on the type of vehicle, mounting may not be possible.

[0003] In order to solve this problem, there has been proposed a horizontal installation type hydraulic device in which an electric motor and a pump are placed on an oil tank with the electric motor and the pump turned over. However, the horizontal installation type has a problem that the bottom area of the oil tank is large, the amount of residual oil is large, extra oil is required, and the weight increases.

[0004]

[Problems to be solved by the invention]

 In view of the above, a first object of the present invention is to form an oil tank by forming at least a portion including one surface in a vertical direction by metal die-casting and forming a screw hole for mounting on the one surface, thereby mounting the oil tank. It is an object of the present invention to provide a vehicle hydraulic device which is facilitated.

[0005] A second object of the present invention is to fix the mount case to the lower part of the inside of the oil tank facing inward, and attach the motor and pump vertically to separate the oil tank from the motor and pump. It is an object of the present invention to provide a vehicle hydraulic device in which the overall height of the device is kept low even in a vertical installation.

[0006] Other objects and novel features of the present invention will be clarified in embodiments described later.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the invention according to claim 1 of the present application is directed to an oil tank, a pump that sucks and sends out hydraulic oil in the oil tank, an electric motor that drives the pump, the pump and the electric motor. A part including at least one longitudinal surface of the oil tank is formed by metal die-casting, and one longitudinal surface of the oil tank constitutes one side surface of the casing. A mounting screw hole is formed in the one side surface.

According to a second aspect of the present invention, in the hydraulic device for a vehicle according to the first aspect, the oil tank has a substantially rectangular parallelepiped shape, and the housing has a structure in which the oil tank is perpendicular to a housing body having at least a bottom surface. It is characterized by having a structure which is fixed upright.

The invention according to claim 3 of the present application is the vehicle hydraulic device according to claim 1 or 2, wherein a boss, which is a thick part, is formed inside the metal die-cast, and the mounting screw hole is provided. Are formed on the boss portion.

[0010] The invention according to claim 4 of the present application is the vehicle hydraulic device according to claim 1, 2, or 3, wherein a mount case is provided at a lower portion of a surface of the oil tank that forms one side surface of the housing, opposite to a lower surface of the oil tank. And a structure in which the pump is integrated below the electric motor is attached to the mount case via a vibration isolating member, and the pump is located inside the mount case. .

According to a fifth aspect of the present invention, there is provided an oil tank, a pump that sucks up and sends out hydraulic oil in the oil tank, an electric motor that drives the pump, and a housing that covers the pump and the electric motor. In the hydraulic device provided, one side surface of the housing is formed by one surface in a vertical direction of the oil tank, and a mount case is fixed to a lower portion of a surface opposite to one surface of the oil tank that forms one side surface of the housing, A structure in which the pump is integrated below the electric motor is attached to the mount case via a vibration isolating member, and the pump is located inside the mount case.

The invention according to claim 6 of the present application is the vehicle hydraulic device according to claim 4 or 5, wherein the mount case has a supply path formed therein to communicate with the inside of the oil tank. The opening of the path is directed toward the inside of the mount case, and the suction port of the pump and the opening of the supply path are connected via a seal member also functioning as a vibration proof.

[0013]

[Embodiment of the invention]

 Hereinafter, an embodiment of a vehicle hydraulic device according to the present invention will be described with reference to the drawings.

FIGS. 1 to 6 show a mechanical structure of a vehicle hydraulic device according to an embodiment of the present invention, and FIG. 7 shows a hydraulic circuit thereof.

In these figures, reference numeral 1 denotes an oil tank containing hydraulic oil, and a tank body 2 having five substantially rectangular parallelepiped surfaces and a tank cover 3 forming the remaining one surface are combined via a sealing member. It is integrated. Here, the tank body 2 is a die-cast metal made of aluminum or the like, and the tank cover 3 made of a metal plate such as an iron plate is screwed using a screw hole formed on the mating surface of the tank body 2. You.

As described above, the oil tank 1 has a vertically-long, substantially rectangular parallelepiped shape as a whole, and the casing 10 of the apparatus is configured such that the oil tank 1 is set upright on the casing body 11 having at least the bottom surface, and the tank body 2 Has a structure in which one surface in the vertical direction is fixed to one side surface of the housing (the rear surface in FIG. 1). The front and upper opening surfaces of the housing body 11 are closed by screwing the outer lid 12 to the body 11. That is, the housing 10 includes the housing main body 11, the outer lid 12, and the oil tank 1 (metallic die-cast tank main body 2) which forms one side surface on the back side.

A boss 5 is integrally formed inside the tank main body 2, and screw holes 6 and 7 are formed at the front end and the rear side of the boss 5 as shown in FIGS. 1 and 3, respectively. The screw holes 6 facing the inside of the casing 10 are used to fix the tank lid 3 and are used to attach components of the hydraulic device (such as the mount case 30) to the inside of the casing. Further, as shown in the rear view of FIG. 3, the screw holes 7 facing the outside of the casing 10 are mounting screw holes 7 used for mounting the hydraulic device to the other vehicle. Since it is formed in the portion, sufficient mounting strength can be secured.

The oil tank 1 is provided with an oil supply port 20, a plug 21 for closing the oil supply port 20, a level gauge 22 indicating the amount of oil, and an air breather 23. Although a drain port 24 is formed at the bottom of the oil tank 1, it is closed by a plug when the hydraulic oil is filled.

The tank lid 3 is provided with through holes 25A and 25B for sucking hydraulic oil from the oil tank 1 and returning the hydraulic oil to the oil tank 1. The suction member 26 is fixed on the inside, and the mount case 30 is screwed on the outside with the tank cover 3 interposed therebetween. At this time, although not shown, a seal member such as an O-ring is used together. The suction member 26 has a suction port 27 only at the lower part, so that the suction can be performed even if the liquid level of the oil tank 1 drops to near the bottom surface.

The mount case 30 has a bottom surface and four side surfaces as shown in FIGS. 8 to 10 and has a box shape with an open upper portion. The mounting case 30 has a mounting surface shown in FIG. Thus, an oil inlet 31 and an oil return port 32 are formed. As shown in FIG. 1, the oil suction port 31 communicates with a tip opening 34 formed in a protruding portion facing the inside of the mount case 30 through a hydraulic oil supply path 33 formed inside the mount case. That is, the inside of the oil tank 1 communicates with the suction opening 27 of the suction member 26, the oil suction port 31 of the mount case 30, and the distal end opening 34 through the supply path 33.

The oil return port 32 communicates with an oil return opening 36 formed in a protruding portion facing the outside of the mount case 30 through an oil return path 35 of FIG. 10 formed inside the mount case. That is, the inside of the oil tank 1 communicates with the oil return opening 36 through the drain hole 25B, the oil return port 32 of the mount case 30, and the oil return path 35.

A structure in which the pump P is integrated below the electric motor M is attached to the mount case 30 via an anti-vibration rubber 40 as an anti-vibration member. The anti-vibration rubber 40 has the bases of the separate bolts 41 and 42 buried in the upper and lower directions, and is attached to the flange screw holes of the electric motor M and the screw holes of the mount case 30 using these bolts 41 and 42, respectively. The pump P is configured to be driven to rotate by the electric motor M. When the structure in which the electric motor M and the pump P are integrated is attached to the mount case 30, the pump P is located inside the mount case 30. , Surrounded by this. Further, as shown in FIG. 10, the suction port 50 of the pump P is opposed to the front end opening 34 and is water-tightly connected via a seal member 51 which also serves as vibration proof.

A manifold block 60 provided with a check valve 61 and a solenoid valve 62 for oil return provided on the discharge side of the pump P in FIG. 7 is screwed to a mounting portion 52 integral with the pump P as shown in FIG. The oil discharge port 63 is directly connected to the manifold block 60 and protrudes from the side surface of the housing 10. The hydraulic circuit of FIG. 7 is provided between the discharge port of the pump P and the manifold block 60, and between the oil return opening 36 of the mount case 30 and the manifold block 60.

As shown in FIG. 7, two electromagnetic switches 71 and 72 are connected in series to turn on and off the energization of the electric motor M. The electromagnetic switches 71 and 72 are fixed to the inner side surface of the housing 10 as shown in FIGS. 1, 2 and 6.

The reason why the two electromagnetic switches 71 and 72 are used in series is that even if one switch is welded, the other switch operates so that the power can be turned off. That's why.

A wiring port 13 is formed on a side surface of the housing 10, from which a connection line from a switch, a solenoid valve, or a pump P is drawn.

By forming a mounting hole on the bottom surface of the housing body 11, it is also possible to fix the housing body on the bottom surface side, thereby increasing the degree of freedom of mounting.

In this embodiment, when the pump P is rotationally driven by the electric motor M, the hydraulic oil in the oil tank 1 is supplied to the suction port 27 of the suction member 26 in FIG. The oil is discharged from the oil discharge port 63 via the oil suction port 31 of the case 30, the hydraulic oil supply path 33, the front end opening 34, the suction port 50 of the pump P, and the check valve 61 in the manifold block 60 in FIG. When the hydraulic oil is returned to the oil tank 1, the solenoid oil 62 provided in the manifold block 60 is opened, so that the hydraulic oil is supplied to the oil discharge port 63, the manifold block 60, and the mounting case shown in FIGS. The oil is returned to the oil tank 1 via the oil return opening 30 and the oil return port 32.

According to this embodiment, the following effects can be obtained.

(1) The oil tank 1 includes a pump P that sucks and sends out hydraulic oil in the oil tank, an electric motor M that drives the pump P, and a housing 10 that covers the pump P and the electric motor M. In the hydraulic device, a portion including at least one vertical surface of the oil tank 1 is formed by a metal die-cast tank main body 2, and one vertical surface of the oil tank 1 forms one side surface of the housing 10. A mounting screw hole 7 is formed on one side surface, and the mounting screw hole 7 can be easily mounted on the other vehicle using the mounting screw hole 7. Further, by forming the boss 5 on the tank body 2 made of metal die-cast and providing the mounting screw hole 7 therein, sufficient strength can be secured.

(2) The oil tank 1 has a substantially rectangular parallelepiped shape, and the housing 10 has a structure in which the oil tank 1 is vertically fixed to a housing main body 11 having at least a bottom surface. It is possible to reduce the height of the device as compared with the case where a pump and an electric motor are mounted. In addition, by arranging the oil tank 1 vertically and the pump and the electric motor also in the vertical position, the floor area of the tank can be reduced and the hydraulic oil can be effectively used.

(3) A mount case 30 is fixed to a lower portion (tank lid portion 3) opposite to one surface of the oil tank 1 constituting one side surface of the housing 10, and a pump P is integrated below the electric motor M. The mounted structure is attached to the mount case 30 via a vibration isolating member (vibration isolating rubber 40), so that the pump P, the electric motor M, and the hydraulic components are separated from the housing 10 to reduce vibration noise. Can be planned. Further, by disposing the pump P inside the mount case 30, noise can be reduced. Further, the mounting case 30 has a hydraulic oil supply path 33 formed therein, which communicates with the inside of the oil tank 1. The tip opening 34 of the supply path 33 faces the inside of the mount case 30, and the suction port 50 of the pump P The opening of the supply path 33 is connected to the opening of the supply path 33 via a seal member 51 which also serves as vibration proof, so that piping work can be saved and vibration proof between the mount case 30 and the pump P can be realized. As a result, the noise level was reduced by 10 dB from the current product.

Although the embodiments of the present invention have been described above, it is obvious to those skilled in the art that the present invention is not limited to the embodiments and various modifications and changes can be made within the scope of the claims. There will be.

[0034]

[Effect of the invention]

 As described above, according to the present invention, a space-saving, lightweight, and low-noise vehicle hydraulic device can be realized.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a vehicle hydraulic device according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a right side view of the same.

FIG. 5 is a left side view of the same.

FIG. 6 is a plan view of the same.

FIG. 7 is a hydraulic circuit diagram of the embodiment.

FIG. 8 is a perspective view of the mount case used in the embodiment as viewed from the front side.

FIG. 9 is a perspective view of the same seen from the rear side.

FIG. 10 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil tank 2 Tank main body 3 Tank lid 5 Boss 6, 7 Screw hole 10 Housing 11 Housing main body 12 Outer lid 20 Oil filler 21 Plug 22 Level gauge 25 Drain hole 26 Suction member 30 Mounting case 31 Oil suction Port 32 Oil return port 33 Hydraulic oil supply path 34 Tip opening 40 Anti-vibration rubber 60 Manifold block 63 Oil discharge port M Motor P pump

Claims (6)

[Utility model registration claims] 1. A hydraulic device comprising: an oil tank, a pump for sucking and sending hydraulic oil in the oil tank, an electric motor for driving the pump, and a housing for covering the pump and the electric motor. A portion including at least one vertical surface of the tank is formed by metal die casting, and one vertical surface of the oil tank forms one side surface of the housing, and a screw hole for mounting is formed on the one side surface. A hydraulic device for a vehicle. 2. The hydraulic device for a vehicle according to claim 1, wherein the oil tank has a substantially rectangular parallelepiped shape, and the housing has a structure in which the oil tank is vertically fixed to a housing body having at least a bottom surface. 3. The hydraulic device for a vehicle according to claim 1, wherein a boss which is a thick portion is formed inside the metal die-cast, and the mounting screw hole is formed in the boss portion. 4. A mounting case is fixed to a lower portion of one side surface of the casing opposite to one surface of the oil tank, and a structure in which the pump is integrated below the electric motor is prevented by the mounting case. The hydraulic device for a vehicle according to claim 1, wherein the pump is mounted via a vibration member, and the pump is located inside the mount case. 5. A hydraulic device comprising: an oil tank, a pump for sucking and sending hydraulic oil in the oil tank, an electric motor for driving the pump, and a housing for covering the pump and the electric motor. One side surface of the housing is constituted by one surface in the vertical direction of the tank, a mount case is fixed to a lower portion of an opposite side of one surface of the oil tank which constitutes one side surface of the housing, and the pump is provided below the electric motor. A hydraulic device for a vehicle, wherein a structure in which the pump is integrated is attached to the mount case via a vibration isolating member, and the pump is located inside the mount case. 6. The mounting case, wherein a hydraulic oil supply path communicating with the inside of the oil tank is formed inside, and a front end opening of the supply path faces toward the inside of the mount case, and a suction port of the pump is provided. 6. The hydraulic device for a vehicle according to claim 4, wherein the opening of the supply path is connected to a front end opening of the supply path via a seal member also functioning as a vibration isolator.