Controller shell assembly of motor pump unit and motor pump unit

Abstract

The utility model discloses a controller shell assembly of a motor pump unit and the motor pump unit, the controller shell assembly of the motor pump unit comprises a main shell, the main shell is internally provided with a main chamber for installing a control assembly; the bottom of the main shell extends downwards to form an auxiliary cavity, and the auxiliary cavity communicates with the main cavity. The two sides of the auxiliary chamber are opened; the motor end of the motor pump unit is fixedly connected with the opening in the auxiliary cavity in a sealed mode through a sealing fastener, and the pump connecting end of the motor pump unit is arranged in an overhanging mode. And the connecting bracket is arranged between the pump connecting end of the motor pump unit and the main shell. According to the utility model, the problem that the motor pump unit and the controller shell are difficult to seal is solved, the connecting support structure is arranged, the structural strength of shell connection is enhanced through the connecting support structure, and the motor pump unit is suitable for being installed on a vehicle and meets the requirement of vibration in the vehicle running process.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor pump unit technical field, specifically, a kind of controller shell assembly and motor pump unit of motor pump unit. BACKGROUND

[0002] Motor pump unit is mainly used for automobile active suspension system, with high integration, small space size, simple structure, excellent sealing performance, easy to disassemble and reassemble and the like. The shell of MPU usually includes two motor housings and a controller housing disposed on top of the two motor housings, wherein the controller housing is adhered to the two motor housings by sealing glue, and connected by bolts. The two motor housings are adhered by sealing glue. That is, the sealing between the three shells of the MPU is mainly achieved by sealing glue, and the long-term sealing performance is generally good. In addition, since the sealing glue has fluidity, uneven application is prone to occur during application, and the sealing glue needs to be cleaned and new sealing glue needs to be applied every time after disassembly, which is complicated and costly.

[0003] There are also a plurality of bolts for fixing the controller housing to the two motor housings, and a sealing gasket is used for sealing. However, the mold is complex and the production cost is high. In addition, a plurality of bolts are required for assembly, and there is still a risk of sealing failure, especially in the triangular area where the horizontal and vertical interfaces meet, which is prone to gaps and sealing failure.

[0004] In addition, whether the controller housing is adhered to the two motor housings by sealing glue or fixed by a plurality of bolts and sealed by a sealing gasket, it belongs to the sealing of space structure, and the production and manufacturing are poor. SUMMARY

[0005] To solve the above technical problems, the utility model provides a controller shell assembly and motor pump unit of motor pump unit. The shell assembly solves the problem of sealing between the motor pump unit and the controller housing, and has a connecting bracket structure that enhances the structural strength of the shell connection, ensures the connection strength between the shells, and meets the requirements of vibration during vehicle driving when installed on a vehicle.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] A controller shell assembly of a motor pump unit includes:

[0008] A main shell has a main cavity inside for installing a control assembly. The bottom of the main shell extends downward to form a secondary cavity, which is in communication with the main cavity. The secondary cavity is open on both sides.

[0009] The motor end of the motor pump unit is fixedly connected in a sealed manner between the opening on the auxiliary chamber through a sealing fastener, and the pump connecting end of the motor pump unit is provided in an overhanging manner;

[0010] The connecting support is arranged between the pump connecting end of the motor pump unit and the main shell to fix the pump connecting end of the motor pump assembly to the main shell.

[0011] Beneficial effects: the utility model discloses a controller shell assembly of motor pump unit has the main chamber of installation control assembly, the bottom of main shell downward extension forms auxiliary chamber, and the both sides opening of auxiliary chamber sets up;

[0012] The motor end of the motor pump unit is fixedly connected in a sealed manner between the opening on the auxiliary chamber, the complex space sealing design is designed as simple plane sealing, the sealing effect is improved, and the assembly is good, the product quality is improved, and the manufacturing cost is reduced.

[0013] In an alternative embodiment, the bottom of the main shell (1) is extended downward to form the auxiliary chamber at the middle position, one side of the auxiliary chamber is provided with a first opening communicated with the auxiliary chamber, the other side of the auxiliary chamber is provided with a second opening communicated with the auxiliary chamber, the first opening and the second opening are communicated and symmetrically arranged at the middle position of the bottom of the main shell (1); the pump connecting end of the first motor pump unit is assembled on the first opening, and the pump connecting end of the second motor pump unit is assembled on the second opening.

[0014] Beneficial effects: in this embodiment, the auxiliary chamber is located at the middle position of the bottom of the main shell, and the first motor pump unit and the second motor pump unit are symmetrically arranged on the left and right sides of the auxiliary chamber, so that the stress can be balanced.

[0015] In an alternative embodiment, the motor shell of the motor pump unit is provided with a first flange at the end, and the shell of the auxiliary chamber is provided with a second flange at the end of the two opening sides.

[0016] The sealing fastener comprises:

[0017] A plurality of bolts are connected between the first flange and the second flange to tightly connect the first flange and the second flange.

[0018] A sealing member is arranged between the first flange and the second flange to seal the first flange and the second flange.

[0019] Beneficial effects: in this embodiment, the motor pump unit and the main shell are tightly connected through the flange and bolt parts which are very mature and reliable in the art, and are sealed through the sealing member, so that the motor pump unit and the main shell are reliably fixedly connected.

[0020] In an alternative embodiment, the first flange is integrally formed with a motor housing of the motor-pump unit, and the first flange is formed by extending the motor housing radially outward along the motor housing;

[0021] The second flange is integrally formed with a housing of the auxiliary chamber, and the second flange is formed by extending the housing radially outward along the housing of the auxiliary chamber.

[0022] Beneficial effects: In this embodiment, the first flange is integrally formed with the motor housing of the motor-pump unit, and the second flange is integrally formed with the housing of the auxiliary chamber. This scheme selects a mature and applied design structure, which is simple in structure, easy to manufacture, reliable in connection strength, and reliable in sealing effect.

[0023] In an alternative embodiment, the sealing member is an O-shaped sealing ring, and the second connecting flange is provided with an O-shaped sealing ring groove for mounting the O-shaped sealing ring.

[0024] Beneficial effects: In this embodiment, the sealing member is a conventional O-shaped ring with a simple structure, which is reliable in sealing structure, mature and stable in manufacturing process, low in manufacturing cost, and good in sealing effect.

[0025] In an alternative embodiment, one end of the connecting bracket is provided with a first mounting surface, and the other end of the connecting bracket is provided with a second mounting surface,

[0026] The first mounting surface is provided with a first mounting hole, and the main housing is provided with a first connecting bracket mounting hole matched with the first mounting hole at a position close to an end of the main housing.

[0027] The second mounting surface is provided with a second mounting hole, and the pump connecting end of the motor-pump unit is provided with a second connecting bracket mounting hole matched with the second mounting hole.

[0028] Beneficial effects: In this embodiment, the installation of the motor-pump unit and the main housing is a cantilever beam structure. In order to increase the structural strength, connecting brackets are designed at both ends. The overall strength of the assembly is enhanced, and damage caused by bumps and vibrations on the vehicle is avoided.

[0029] In an alternative embodiment, the first mounting surface and the second mounting surface are perpendicular to each other.

[0030] Beneficial effects: In this embodiment, the two mounting surfaces of the connecting bracket are designed as a 90-degree structure. This structure design allows the position of the motor and the main housing mounting hole to be scattered. The installation stress caused by the position scattering during assembly is avoided. The structural strength is improved.

[0031] In an alternative embodiment, the top of the main housing is provided with a third opening, and the third opening is provided with an upper cover detachably connected with the main housing.

[0032] Beneficial effects: in this embodiment, the top of the main shell is provided with an upper cover detachably connected with the main shell, the control assembly is installed by opening the upper cover, and late maintenance and replacement of the control assembly are also facilitated.

[0033] The utility model discloses further disclose a kind of motor pump units, the controller housing assembly of the motor pump unit described includes.

[0034] The utility model discloses further disclose a kind of installation method based on the motor pump unit, comprising the following steps:

[0035] 1) first hydraulic pump is assembled in first motor, and first motor pump assembly is formed;Second hydraulic pump 3 is assembled in second motor and forms second motor pump assembly;

[0036] 2) O type sealing ring is installed in the sealing groove of first opening of main shell, and first motor pump unit is fixed by bolt in the first opening of main shell;

[0037] 3) first connecting support is assembled, the first mounting surface of first connecting support is attached with the first connecting support mounting hole end portion of main shell, and the second mounting surface of first connecting support is attached with the bolt hole end surface of first hydraulic pump;First connecting support is fixed with the pump connecting end of first motor pump assembly and main shell by bolt through first mounting surface on first connecting support and first connecting support mounting hole of main shell and second mounting surface on first connecting support and bolt hole of hydraulic pump respectively;

[0038] 4) O type sealing ring is assembled in the sealing ring groove of second opening of main shell 1, and second motor pump unit is fixed by bolt in the second opening of main shell;

[0039] 5) second connecting support is assembled, the first mounting surface of second connecting support is attached with the second connecting support mounting hole end portion of main shell, and the second mounting surface of second connecting support is attached with the bolt hole end of second hydraulic pump;Second connecting support is fixed with the pump connecting end of second motor pump assembly and main shell by bolt through first mounting surface on second connecting support and first connecting support mounting hole of main shell and second mounting surface on second connecting support and bolt hole of second hydraulic pump respectively;

[0040] 6) controller PCB board is loaded into the main cavity of main shell, and is connected with first motor and second motor through wire three-phase line, and high-low voltage connector is connected to controller PCB board through wire;

[0041] 7) upper cover and sealing element are assembled, and assembly is completed. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1It is the front view of the motor pump unit assembled according to the utility model;

[0043] 1 is main casing, 2 is motor pump unit, 3 is pump connecting end of motor pump unit, 4 is first connecting support, 5 is second connecting support, 6 is upper cover, 7 is upper cover fixing screw, 8 is connecting support screw, 9 is hydraulic pump screw, 11 is motor fixing screw;

[0044] Figure 2 It is the exploded view of the motor pump unit according to the utility model;

[0045] 2.1 is first motor, 2.2 is second motor, 3.1 is first hydraulic pump, 3.2 is second hydraulic pump, 12.1 is first O-shaped sealing ring, 12.2 is second O-shaped sealing ring;

[0046] Figure 3 It is the structural schematic view of the main casing according to the utility model;

[0047] 1.1 is main chamber, 1.2 is auxiliary chamber, 1.3 is upper cover fixing bolt hole, 1.4 is connecting support mounting hole, 1.5 is motor fixing bolt hole, 1.6 is O-shaped sealing ring groove;

[0048] Figure 4 It is the structural schematic view of the connecting support according to the utility model;

[0049] 4.1 is first mounting surface, 4.2 is second mounting surface, 4.3 is first mounting hole, 4.4 is second mounting hole.

[0050] Figure 5 It is the principle view of the one-letter type support to part processing and assembly dispersion difference;

[0051] Figure 6 It is the compensation principle of the L-shaped support to part processing and assembly dispersion difference. DETAILED DESCRIPTION

[0052] The technical scheme of the utility model will be further explained in detail in combination with specific embodiments and the drawings of the specification, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiments are not as the limitation of the utility model.

[0053] Embodiment 1

[0054] As Figure 1 and Figure 2 Indicated, a kind of controller casing assembly of motor pump unit, including main casing 1, first motor 2.1, second motor 2.2, first hydraulic pump 3.1, second hydraulic pump 3.2.

[0055] The first motor 2.1 is assembled on the left side of the lower part of the main shell 1, and is sealed between the first motor 2.1 and the main shell 1 by the first O-shaped sealing ring 12.1 and is fastened and connected by the motor fixing screw. The first hydraulic pump 3.1 is fastened and connected by the hydraulic pump screw.

[0056] The second motor 2.2 is assembled on the right side of the lower part of the main shell 1, and is sealed between the second motor 2.2 and the main shell 1 by the second O-shaped sealing ring 12.2 and is fastened and connected by the motor fixing screw; the second hydraulic pump 3.2 is fastened and connected by the hydraulic pump screw 9.

[0057] Figure 3 It is a structure diagram of the main shell 1, and the main shell 1 is designed with a main chamber 1.1 and a secondary chamber 1.2, wherein the secondary chamber 2 is formed by extending downward from the bottom of the main chamber 1.1, and the secondary chamber 1.2 is in communication with the main chamber 1.1.

[0058] O-shaped sealing ring grooves 1.6 are designed on both sides of the secondary chamber 1.2, and motor fixing bolt holes 1.5 are also designed; the O-shaped sealing ring grooves 1.6 and the bolt holes 1.5 are symmetrically designed on the main shell, so that one motor is installed on each side; the motor wire passes through the secondary chamber 1.2 and enters the main chamber 1.1 and the controller.

[0059] The motor end of the motor pump unit is sealed and fixedly connected with the opening on the secondary chamber, the complex space sealing design is designed as a simple plane sealing, the sealing effect is improved, and the assembly is good, the product quality is improved, and the manufacturing cost is reduced.

[0060] As a preferred scheme of embodiment 1, the motor housing of the motor pump unit is provided with a first flange at the end, and the housing of the secondary chamber is provided with a second flange at the side end of the two openings;

[0061] The sealing fastener comprises:

[0062] A plurality of bolts are connected between the first flange and the second flange to fasten and connect the first flange and the second flange. Preferably, the motor pump unit and the main shell are fastened and connected by the very mature and reliable flange and bolt in the art, and are sealed by the O-shaped sealing ring, so as to ensure that the motor pump unit and the main shell are reliably sealed and fixedly connected.

[0063] Further, the first flange is integrally formed with a motor shell of the motor pump unit, and the first flange is formed by extending outward along a radial direction of the motor shell of the motor pump unit; the second flange is integrally formed with a shell of the auxiliary chamber, and the second flange is formed by extending outward along a radial direction of the shell of the auxiliary chamber. The first flange is integrally formed with the motor shell of the motor pump unit, and the second flange is integrally formed with the shell of the auxiliary chamber, which selects a mature application design structure, is simple in structure, easy to manufacture, reliable in connection strength, and reliable in sealing effect.

[0064] As a further preferred scheme of the embodiment 1 of the utility model, the bottom middle position of the main shell extends downward to form the auxiliary chamber, one side of the auxiliary chamber is provided with a first opening communicated with the auxiliary chamber, and a pump connecting end of the first motor pump unit is assembled on the first opening; the other side of the auxiliary chamber is provided with a second opening communicated with the auxiliary chamber, and a pump connecting end of the second motor pump unit is assembled on the second opening.

[0065] The auxiliary chamber is located at the bottom middle position of the main shell, and the first motor pump unit and the second motor pump unit are symmetrically arranged at the left and right sides of the auxiliary chamber, and the structure can balance the stress.

[0066] Embodiment 2

[0067] In the embodiment 1, because the installation of the motor pump unit and the main shell is a cantilever beam structure, in order to increase the structural strength, the connecting bracket is fixed at both ends, and the purpose is to enhance the overall strength of the assembly body and avoid damage due to vibration on the vehicle.

[0068] The main shell 1 is provided with a connecting bracket mounting hole 1.4 on the upper end side, which is used for connecting bracket installation and improves the overall structural strength of the assembly.

[0069] Figure 4 It is a structural schematic view of the connecting bracket of the utility model, and the connecting bracket is provided with two mounting surfaces, which are a first mounting surface 4.1 and a second mounting surface 4.2; the first mounting surface 4.1 is provided with a first mounting hole 4.3; and the main shell is provided with a first connecting bracket mounting hole matched with the first mounting hole at a position close to the end of the shell.

[0070] The second mounting surface 4.2 is provided with a second mounting hole 4.4, and the pump connecting end of the motor pump unit is provided with a second connecting bracket mounting hole matched with the second mounting hole 4.4.

[0071] The first hydraulic pump 3.1 is connected with the main shell 1 through the first connecting bracket 4 and is fixed by a connecting bracket screw.

[0072] The second hydraulic pump 3.2 is connected with the main housing 1 through a second connecting bracket 5, one end of the second connecting bracket is fixed through a hydraulic pump screw, and the other end is fixed through a connecting bracket screw.

[0073] Embodiment 3

[0074] The embodiment is different from the embodiments 1 and 2 in that two mounting surfaces of the connecting bracket are designed at an angle of 90 degrees, that is, the first mounting surface 4.1 and the second mounting surface 4.2 are perpendicular to each other. The structure design allows the position difference of the motor and the main housing mounting hole, and does not cause mounting stress when assembled due to the position difference, and can further improve the structural strength.

[0075] The compensation principle of the L-shaped bracket for the machining and assembly difference of parts is as follows:

[0076] Figure 5 As shown in the figure, it is a case of a simple one-word bracket structure, and the assembly relationship between the part 1 and the part 2 is aligned at the bottom. Due to the machining difference between the part 1 and the part 2, a gap H between the mounting surface of the one-word bracket and the mounting surface of the part 1 will inevitably exist after the one-word bracket is attached to the mounting surface of the part 2. At this time, the fixing bolt is tightened, which will cause excessive mounting stress between the three parts, and the parts are easy to be damaged under large vibration load.

[0077] Figure 6 As shown in the figure, it is an assembly relationship of the L-shaped bracket. The mounting surfaces of the L-shaped brackets are at an angle of 90 degrees. In the case that there is machining difference between the parts, the two mounting surfaces can be well attached, there is no assembly stress, the strength of the assembly body is ensured, and higher vibration load can be borne. The specific principle is that the diameter D of the mounting hole of the bracket is greater than the diameter M of the fastening bolt; the gap between the bolt and the bolt hole can be used to compensate the machining and assembly difference of the two parts. As shown in the following figure, the mounting surface 1 of the L-shaped bracket is attached to the mounting surface of the part 1, and the mounting surface 2 of the L-shaped bracket is attached to the mounting surface of the part 2. As long as the machining and assembly difference of the part 1 and the part 2 is controlled within half of the difference between the bolt hole M and the bolt diameter D, the two mounting surfaces can be attached at the same time, the bolt can smoothly pass through the mounting hole, the fastening effect can be achieved, and the assembly can be completed smoothly.

[0078] Embodiment 4

[0079] In an optional embodiment, a third opening is arranged at the top of the main housing, and an upper cover detachably connected with the main housing is arranged at the third opening. The upper cover is detachably connected with the main housing, and the control assembly is installed by opening the upper cover, which is convenient for later maintenance and replacement of the control assembly.

[0080] The utility model further discloses a motor pump unit, the motor pump unit includes the controller housing assembly of the motor pump unit.

[0081] The utility model discloses further disclose a kind of installation method based on the motor pump unit, comprising the following steps:

[0082] 1) first hydraulic pump is assembled in first motor, and first motor pump assembly is formed;Second hydraulic pump 3 is assembled in second motor and second motor pump assembly is formed;

[0083] 2) O type sealing ring is installed in the sealing groove of first opening on main casing, and first motor pump unit is fixed by bolt in the first opening of main casing;

[0084] 3) first connecting bracket is assembled, the first mounting surface of first connecting bracket is attached with the first connecting bracket mounting hole end portion of main casing, and the second mounting surface of first connecting bracket is attached with the bolt hole end surface of first hydraulic pump;First connecting bracket is fixed with the pump connecting end of first motor pump assembly and main casing by bolt through first mounting surface on first connecting bracket and first connecting bracket mounting hole of main casing and second mounting surface on first connecting bracket and bolt hole of hydraulic pump respectively;

[0085] 4) O type sealing ring is assembled in the sealing ring groove of second opening of main casing 1, and second motor pump unit is fixed by bolt in the second opening of main casing;

[0086] 5) second connecting bracket is assembled, the first mounting surface of second connecting bracket is attached with the second connecting bracket mounting hole end portion of main casing, and the second mounting surface of second connecting bracket is attached with the bolt hole end of second hydraulic pump;Second connecting bracket is fixed with the pump connecting end of second motor pump assembly and main casing by bolt through first mounting surface on second connecting bracket and first connecting bracket mounting hole of main casing and second mounting surface on second connecting bracket and bolt hole of second hydraulic pump respectively;

[0087] 6) controller PCB board is loaded into the main cavity of main casing, and is connected three-phase line with first motor and second motor through wire, and high-low voltage connector is connected to controller PCB board through wire;

[0088] 7) upper cover and sealing element are assembled, and assembly is completed.

[0089] The above detailed description of the embodiments of the utility model is combined with the drawings, but the utility model is not limited to this, within the knowledge scope possessed by the person skilled in the art, various changes can be made without departing from the purpose of the utility model, and all are within the protection scope of the claims of the utility model.

Claims

1. A controller housing assembly for an electric motor pump unit, characterized by, The utility model relates to a kind of motor-pump units and control assembly, including: Main shell (1), the main shell is equipped with the main chamber of installation control component inside;The bottom of the main shell extends downward to form a secondary chamber, and the secondary chamber is communicated with the main chamber;Two sides of the secondary chamber are provided with openings; The motor end of the motor-pump unit is fixedly connected with the opening on the secondary chamber by sealing fastener, and the pump connecting end of the motor-pump unit is suspendedly arranged; Connecting bracket is arranged between the pump connecting end of the motor-pump unit and the main shell (1) to fix the pump connecting end of the motor-pump unit with the main shell.

2. The controller housing assembly of the electric motor pump unit according to claim 1, characterized in that The bottom of the main shell (1) extends downward to form the secondary chamber at the middle position, one side of the secondary chamber is provided with a first opening communicated with the secondary chamber, and the other side of the secondary chamber is provided with a second opening communicated with the secondary chamber, and the first opening and the second opening are communicated and symmetrically arranged with the middle position of the bottom of the main shell (1); The first opening is fitted with the pump connecting end of the first motor-pump unit, and the second opening is fitted with the pump connecting end of the second motor-pump unit.

3. The controller housing assembly of the electric motor pump unit of claim 1, wherein, The motor housing of the motor-pump unit is provided with a first flange at the end, and the housing of the secondary chamber is provided with a second flange at the end of the two openings; The sealing fastener comprises: A plurality of bolts are connected between the first flange and the second flange to tightly connect the first flange and the second flange; A sealing element is arranged between the first flange and the second flange to seal between the first flange and the second flange.

4. The controller housing assembly of the electric motor pump unit according to claim 3, characterized in that The first flange is integrally formed with the motor housing of the motor-pump unit, and the first flange is formed by extending outward along the radial direction of the motor housing of the motor-pump unit; The second flange is integrally formed with the housing of the secondary chamber, and the second flange is formed by extending outward along the radial direction of the housing of the secondary chamber.

5. The controller housing assembly of the electric motor pump unit of claim 3, wherein, The sealing element is an O-shaped sealing ring, and the second flange is provided with an O-shaped sealing ring groove (1.6) for mounting the O-shaped sealing ring.

6. The controller housing assembly of the electric motor pump unit of claim 1, wherein, One end of the connecting bracket is provided with a first mounting surface (4.1), and the other end of the connecting bracket is provided with a second mounting surface (4.2), the first mounting surface (4.1) is provided with a first mounting hole (4.3), and the main shell (1) is provided with a first connecting bracket mounting hole (1.4) matched with the first mounting hole (4.3) at a position close to the end of the shell;The second mounting surface (4.2) is provided with a second mounting hole (4.4), and the pump connecting end of the motor-pump unit is provided with a second connecting bracket mounting hole matched with the second mounting hole (4.4).

7. The controller housing assembly of the electric motor pump unit according to claim 6, characterized in that The first mounting surface (4.1) and the second mounting surface (4.2) are perpendicular to each other.

8. The controller housing assembly of the electric motor pump unit of claim 1, wherein, The top of the main shell (1) is provided with a third opening, and the third opening is provided with an upper cover detachably connected with the main shell (1).

9. An electric motor pump unit, characterized by The motor-pump unit comprises the controller shell assembly of any one of claims 1-8.

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