Hydraulic energy providing device, damping system and vehicle chassis system
By sharing a housing with the electric pump unit in the hydraulic power supply device and using a support block to fix the motor, the problems of motor connection leakage and high cost are solved, achieving cost savings and simplified production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SCHAEFFLER TECHNOLOGIES AG & CO KG
- Filing Date
- 2025-05-29
- Publication Date
- 2026-07-21
AI Technical Summary
In traditional hydraulic power supply devices, two motors are independent and require screws and seals for connection, which poses a risk of leakage, is costly, and involves complex production processes.
The first and second electric pump units are housed in the same housing, with the motors spaced apart and fixed by support blocks. A sealing ring is used only between the electronic control unit and the housing, eliminating the need for screws and sealing rings between the motors.
It reduces the number of housings and mold costs, lowers the risk of leakage, simplifies the production process, and reduces the number of parts and assembly complexity.
Smart Images
Figure CN224528375U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle chassis technology. Specifically, it relates to a hydraulic power supply device, a shock absorption system, and a vehicle chassis system for a vehicle chassis. Background Technology
[0002] In a vehicle, the chassis features a hydraulically controlled damping system. Two hydraulic cylinders or damper chambers, containing a given damping fluid, are interconnected via controllable damping or throttle valves. The filling state of the hydraulic cylinders can be actively controlled, and hydraulic energy can be introduced into the chassis as needed. The hydraulic cylinders of the damping system can be connected to hydraulic pumps. By pumping hydraulic fluid, pitch and / or roll movements of the vehicle can be counteracted. Furthermore, different damping behaviors can be set via the hydraulic pump.
[0003] The hydraulic pump is controlled by an electric motor, forming an electric pump unit, which can be controlled by an electronic control unit (ECU). Two electric pump units can be set up to control two hydraulic cylinders respectively. In traditional hydraulic power supply devices, the two motors are independent entities, requiring screws and seals to connect them for a tight seal. There is a risk of leakage between the two motors, necessitating online testing of the seal, which is costly. Furthermore, traditional hydraulic power supply devices have many parts and complex manufacturing processes, resulting in higher costs. Utility Model Content
[0004] To solve the above technical problems, this utility model provides a hydraulic energy supply device and a shock absorption system.
[0005] In a first aspect, embodiments of the present invention provide a hydraulic power supply device. The hydraulic power supply device includes: a housing, a first electric pump assembly, a second electric pump assembly, and an electronic control unit. A motor receiving slot is provided at the center of the housing; the first electric pump assembly includes a first hydraulic pump and a first motor for driving the first hydraulic pump; the second electric pump assembly includes a second hydraulic pump and a second motor for driving the second hydraulic pump; the electronic control unit is configured to control the first motor and the second motor. The first and second electric pump assemblies are disposed within the housing, and the first and second motors are disposed in the motor receiving slot and spaced apart from each other.
[0006] According to some embodiments of the present invention, the first hydraulic pump and the second hydraulic pump are respectively disposed at both ends in the axial direction within the housing; the first hydraulic pump is connected to the first motor via a drive shaft, and the second hydraulic pump is connected to the second motor via a drive shaft.
[0007] According to some embodiments of the present invention, the motor receiving groove is recessed on both sides along the axial direction to form a first motor receiving sub-groove and a second motor receiving sub-groove, respectively; the first motor is at least partially received in the first motor receiving sub-groove, and the second motor is at least partially received in the second motor receiving sub-groove.
[0008] According to some embodiments of the present invention, the first motor includes a first sensor and a first cover plate; the second motor includes a second sensor and a second cover plate. The first sensor is housed in a first motor receiving sub-slot, and the first cover plate seals the opening of the first motor receiving sub-slot; the second sensor is housed in a second motor receiving sub-slot, and the second cover plate seals the opening of the second motor receiving sub-slot.
[0009] According to some embodiments of the present invention, the hydraulic energy supply device further includes a support block; the support block is supported between the first cover plate and the second cover plate, so that the first motor and the second motor are spaced apart from each other.
[0010] According to some embodiments of the present invention, the support block is pressed into the gap between the first cover plate and the second cover plate by an interference fit.
[0011] According to some embodiments of the present invention, a sealing ring is provided between the housing and the electronic control unit.
[0012] In a second aspect, embodiments of the present invention also provide a shock absorption system. The shock absorption system includes: a hydraulic energy supply device as described above; a first hydraulic line and a second hydraulic line; and a first shock-absorbing hydraulic cylinder and a second shock-absorbing hydraulic cylinder. The first hydraulic line is connected between the first hydraulic pump and the first shock-absorbing hydraulic cylinder, and the second hydraulic line is connected between the second hydraulic pump and the second shock-absorbing hydraulic cylinder.
[0013] In a third aspect, embodiments of the present invention also provide a vehicle chassis system. The vehicle chassis system includes: a chassis axle and a shock absorption system as described above; wherein the shock absorption system is disposed on the chassis axle.
[0014] The hydraulic power supply device and shock absorption system of this invention allow the first and second electric pump units to share a single housing, reducing the number of housings and saving mold costs. Both the first and second motors are installed within the housing, eliminating the need for connecting screws and sealing rings, thus reducing the number of parts and the manufacturing process. Furthermore, the hydraulic power supply device of this invention only requires a sealing ring between the electronic control unit and the housing to achieve a sealing function; no sealing ring is needed between the first and second motors, reducing the manufacturing and assembly process and lowering the risk of leakage. Additionally, the hydraulic power supply device of this invention can be abutted between the first and second cover plates via a support block, simultaneously securing both the first and second motors without the need for complex processes such as screw tightening. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A schematic diagram of a shock absorption system according to an embodiment of the present invention is shown;
[0017] Figure 2 A schematic diagram of a hydraulic energy supply device according to an embodiment of the present invention is shown; and
[0018] Figure 3 A side sectional view of a hydraulic energy supply device according to an embodiment of the present invention is shown. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0020] According to an embodiment of this utility model, a hydraulic energy supply device is provided for use in a shock absorption system. This shock absorption system is a hydraulic shock absorption system and can be applied to a vehicle chassis system. The shock absorption system is used to provide damping for the undulating vibrations of a vehicle and is typically mounted on the chassis axle of the vehicle chassis system.
[0021] Figure 1A schematic diagram of a shock absorption system according to an embodiment of the present invention is shown. Figure 1 As shown, the shock absorption system includes: a hydraulic power supply device 100, a shock absorption hydraulic cylinder, and hydraulic lines connecting the hydraulic power supply device 100 and the shock absorption hydraulic cylinder. Typically, two shock absorption hydraulic cylinders can be configured, and correspondingly, the hydraulic power supply device 100 also includes two electric pump sets for supplying hydraulic power to the two shock absorption hydraulic cylinders respectively, so that the shock absorption hydraulic cylinders provide damping force to the vehicle chassis through piston movement. Typically, the two electric pump sets can be independently controlled by an electronic control unit (ECU).
[0022] Figure 2 A schematic diagram of a hydraulic energy supply device 100 according to an embodiment of the present invention is shown; and Figure 3 A side sectional view of a hydraulic energy supply device 100 according to an embodiment of the present invention is shown. Figure 2 and Figure 3 As shown, in some embodiments, the hydraulic power supply device includes: a housing 1, two electric pump sets, and an electronic control unit 2. A motor receiving slot 11 is provided at the center of the housing 1. The electric pump sets include a first electric pump set and a second electric pump set, which are arranged in the housing 1 along the axial direction X. The first electric pump set includes a first hydraulic pump 4 and a first motor 6 for driving the first hydraulic pump 4. The second electric pump set includes a second hydraulic pump 5 and a second motor 7 for driving the second hydraulic pump 5. Furthermore, the first motor 6 and the second motor 7 are disposed in the motor receiving slot 11 and spaced apart from each other.
[0023] Combination Figure 2 and Figure 3 As shown, the motor receiving slot 11 can be designed as follows: located approximately at the center of the housing 1 in the axial direction X, along a longitudinal direction perpendicular to the axial direction X (e.g., in...). Figure 2 and Figure 3 The vertical direction (in the middle) is formed by a recess from the outside inward. The motor receiving groove 11 forms an opening on the outer surface of the housing 1. This opening is large enough to accommodate the motor, thus facilitating the installation of the first motor 6 and the second motor 7. Furthermore, the motor receiving groove 11 has sufficient space to accommodate the first motor 6 and the second motor 7, and allows the first motor 6 and the second motor 7 to be spaced apart from each other. This allows the first motor 6 and the second motor 7 to share a single housing 1, reducing the number of housings and saving mold costs; at the same time, they are relatively independently spaced apart, forming good isolation to avoid leakage between the two electric pump sets. Therefore, no connecting screws and sealing rings are needed between the first motor 6 and the second motor 7, and the number of parts and the production process are reduced.
[0024] Furthermore, such as Figure 2 and Figure 3As shown, the first hydraulic pump 4 and the second hydraulic pump 5 can be respectively disposed at both ends in the axial direction X within the housing 1. The outer ends of the first hydraulic pump 4 and the second hydraulic pump 5 are connected to hydraulic pipelines. Therefore, disposing of the first hydraulic pump 4 and the second hydraulic pump 5 at the outer ends of the housing 1 facilitates connection to hydraulic pipelines. The inner ends of the first hydraulic pump 4 and the second hydraulic pump 5 are connected to motors. Specifically, the first hydraulic pump 4 is connected to the first motor 6 via a drive shaft (not shown), and the second hydraulic pump 5 is connected to the second motor 7 via a drive shaft (not shown).
[0025] With the above configuration, the first electric pump unit and the second electric pump unit can be integrated into the same housing 1, saving costs.
[0026] Furthermore, such as Figure 2 As shown, the motor receiving groove 11 has a first motor receiving sub-groove 111 and a second motor receiving sub-groove 112 recessed on both sides along the axial direction X; the first motor 6 is at least partially received in the first motor receiving sub-groove 111, and the second motor 7 is at least partially received in the second motor receiving sub-groove 112.
[0027] With the above arrangement, the accommodating spaces of the first motor receiving sub-slot 111 and the second motor receiving sub-slot 112 roughly correspond to the first motor 6 and the second motor 7, respectively, and can install and fix the first motor 6 and the second motor 7. In this way, the first motor 6 and the second motor 7 can be more stably placed in the motor receiving slot 11. Furthermore, the opening size of the motor receiving slot 11 does not need to be set too large, only needing to accommodate one motor to pass through, and then placed in the corresponding sub-slot, making the design structure of the housing 1 more compact. In addition, the first motor receiving sub-slot 111 and the second motor receiving sub-slot 112, which are recessed on both sides facing the axial direction X, also facilitate the spacing between the first motor 6 and the second motor 7, thereby making the spatial layout of the hydraulic energy supply device 100 more reasonable.
[0028] See Figure 2 As shown, the first motor 6 includes a first sensor 61 and a first cover plate 62; the second motor 7 includes a second sensor 71 and a second cover plate 72. The first sensor 61 is housed in a first motor receiving sub-slot 111, and the first cover plate 62 seals the opening of the first motor receiving sub-slot 111; the second sensor 71 is housed in a second motor receiving sub-slot 112, and the second cover plate 72 seals the opening of the second motor receiving sub-slot 112. This further creates an isolation seal between the first motor 6 and the second motor 7.
[0029] Furthermore, the hydraulic power supply device 100 also includes a support block 8. The first motor 6 and the second motor 7 are arranged opposite each other in the axial direction X, and the support block 8 can abut against and support between the first motor 6 and the second motor 7; more specifically, the support block 8 abuts against and supports between the first cover plate 62 and the second cover plate 72, so that the first motor 6 and the second motor 7 are spaced apart from each other.
[0030] The support block 8 can be pressed into the gap between the first cover plate 62 and the second cover plate 72 by an interference fit. In this way, the support block 8 can press the first cover plate 62 and the second cover plate 72 on both sides in the axial direction, so that the first motor 6 and the second motor 7 can be better fixed in the first motor receiving slot 111 and the second motor receiving slot 112 respectively, and further strengthen the isolation between the first motor 6 and the second motor 7 to avoid liquid leakage between them.
[0031] Furthermore, the first and second electric pump units can operate independently of each other and are controlled by the same ECU 2. A sealing ring 3 is provided between the housing 1 and the ECU 2 to form a seal between them.
[0032] The hydraulic power supply device 100 of this utility model only needs to use a sealing ring between the ECU 2 and the housing 1 to achieve the sealing function, and there is no need to set seals between other components. While ensuring the sealing effect, it reduces the production and assembly process of parts and saves costs.
[0033] On the other hand, such as Figure 1 As shown, this utility model also provides a shock absorption system. The shock absorption system includes: a hydraulic power supply device 100 as described in any of the above embodiments, a first hydraulic line 201 and a second hydraulic line 202, and a first shock-absorbing hydraulic cylinder 301 and a second shock-absorbing hydraulic cylinder 302. The first hydraulic line 201 is connected between the first hydraulic pump 4 and the first shock-absorbing hydraulic cylinder 301, and the second hydraulic line 202 is connected between the second hydraulic pump 5 and the second shock-absorbing hydraulic cylinder 302.
[0034] Through the above-mentioned shock absorption system, ECU 2 can independently control the first motor 6 and the second motor 7. The first motor 6 and the second motor 7 control the first hydraulic pump 4 and the second hydraulic pump 5 respectively, thereby controlling the first hydraulic pump 4 and the second hydraulic pump 5 to provide hydraulic energy to the first shock absorption hydraulic cylinder 301 and the second shock absorption hydraulic cylinder 302 respectively, so as to realize the damping and shock absorption of the vehicle chassis system.
[0035] On the other hand, this utility model also provides a vehicle chassis system. The vehicle chassis system includes: a chassis axle (not shown) and a shock absorption system as described in the above embodiments. The shock absorption system may be mounted on the chassis axle.
[0036] It should be noted that this utility model aims to improve the structural layout of a hydraulic energy supply device. Therefore, the technical solution of this utility model can be applied to various hydraulic energy supply devices, and is not limited to vehicles. The number and arrangement of the electric pump unit and its included motor and hydraulic pump are not limited to the limitations described above.
[0037] While possible embodiments have been described exemplarily in the foregoing description, it should be understood that numerous variations of the embodiments exist through combinations of all known and readily conceived technical features and implementation methods. Furthermore, it should be understood that the exemplary embodiments are merely examples and do not in any way limit the scope, application, or construction of this invention. The foregoing description is more intended to provide those skilled in the art with technical guidance for transforming at least one exemplary embodiment, wherein various changes, particularly regarding the function and structure of the components, can be made without departing from the scope of the claims.
[0038] Figure reference numerals
[0039] 100. Hydraulic power supply device; 1. Housing; 11. Motor receiving slot; 111. First motor receiving sub-slot; 112. Second motor receiving sub-slot; 2. Electronic control unit; 3. Sealing ring; 4. First hydraulic pump; 5. Second hydraulic pump; 6. First motor; 61. First sensor; 62. First cover plate; 7. Second motor; 71. Second sensor; 72. Second cover plate; 8. Support block;
[0040] 201. First hydraulic line; 202. Second hydraulic line;
[0041] 301. First shock-absorbing hydraulic cylinder; 302. Second shock-absorbing hydraulic cylinder;
[0042] X. Axial direction.
Claims
1. A hydraulic energy supply device, characterized in that, include: The housing (1) has a motor receiving slot (11) at its center. The first electric pump assembly includes a first hydraulic pump (4) and a first motor (6) for driving the first hydraulic pump (4); The second electric pump assembly includes a second hydraulic pump (5) and a second motor (7) for driving the second hydraulic pump (5); and Electronic control unit (2), configured to control the first motor (6) and the second motor (7); The first electric pump set and the second electric pump set are disposed in the housing (1), and the first motor (6) and the second motor (7) are disposed in the motor receiving slot (11) and are spaced apart from each other.
2. The hydraulic energy supply device according to claim 1, wherein, The first hydraulic pump (4) and the second hydraulic pump (5) are respectively located at both ends in the axial direction (X) inside the housing (1); the first hydraulic pump (4) is connected to the first motor (6) through a drive shaft, and the second hydraulic pump (5) is connected to the second motor (7) through a drive shaft.
3. The hydraulic energy supply device according to claim 1, wherein, The motor receiving groove (11) has a first motor receiving sub-groove (111) and a second motor receiving sub-groove (112) recessed on both sides along the axial direction (X); the first motor (6) is at least partially received in the first motor receiving sub-groove (111), and the second motor (7) is at least partially received in the second motor receiving sub-groove (112).
4. The hydraulic energy supply device according to claim 3, wherein, The first motor (6) includes a first sensor (61) and a first cover plate (62); the second motor (7) includes a second sensor (71) and a second cover plate (72); The first sensor (61) is housed in the first motor receiving sub-slot (111), and the first cover plate (62) seals and covers the opening of the first motor receiving sub-slot (111); the second sensor (71) is housed in the second motor receiving sub-slot (112), and the second cover plate (72) seals and covers the opening of the second motor receiving sub-slot (112).
5. The hydraulic energy supply device according to claim 4 further includes a support block (8); the support block (8) is supported between the first cover plate (62) and the second cover plate (72) so that the first motor (6) and the second motor (7) are spaced apart from each other.
6. The hydraulic energy supply device according to claim 5, wherein, The support block (8) is pressed into the gap between the first cover plate (62) and the second cover plate (72) by an interference fit.
7. The hydraulic energy supply device according to claim 1, wherein, A sealing ring (3) is provided between the housing (1) and the electronic control unit (2).
8. A shock absorption system, characterized in that, include: Hydraulic energy supply device (100) as described in any one of claims 1 to 7; First hydraulic line (201) and second hydraulic line (202); and First shock-absorbing hydraulic cylinder (301) and second shock-absorbing hydraulic cylinder (302); The first hydraulic line (201) is connected between the first hydraulic pump (4) and the first shock-absorbing hydraulic cylinder (301), and the second hydraulic line (202) is connected between the second hydraulic pump (5) and the second shock-absorbing hydraulic cylinder (302).
9. A vehicle chassis system, characterized in that, include: The chassis axle and the shock absorption system as described in claim 8; wherein the shock absorption system is disposed on the chassis axle.