Fluid conveying device structure

Abstract

The utility model belongs to automobile parts in the machinery manufacturing industry, and particularly relates to a fluid conveying device structure. A pump front cover is arranged on the left side of the pump body, a pump rear cover is arranged on the right side of the pump body, a driving gear shaft of a driving gear is in clearance fit with one sliding bearing, a driven gear shaft of a driven gear is in clearance fit with the other sliding bearing, a positioning pin is installed in a positioning pin hole in the pump body, and a spring steel sheet clamping groove is formed in the outer end face of the pump rear cover. The spring steel sheet is elastically installed in the spring steel sheet clamping groove, and the outer shell and the outer shell cover are tightly fixed through the first bolt. The internal oil pump unit is placed in the oil pump cavity composed of the outer shell and the outer shell cover to jointly form the oil conveying oil pump, and oil enters the oil inlet hole of the internal oil pump from the outside through the oil inlet channel of the outer shell and then is discharged out of the pump through the oil outlet channel of the outer shell and the oil outlet hole. The internal oil pump is installed in the outer shell through the elastic element, and due to the buffering effect of the elastic element, noise generated by rotation of the oil pump is reduced.

Description

A fluid transport device structure Technical Field

[0001] This utility model pertains to automotive parts in the machinery manufacturing industry, and specifically relates to a fluid conveying device structure. Background Technology

[0002] With the rapid development of the automotive industry, while ensuring vehicle safety and stability, customers are paying more attention to vehicle comfort and driving experience. Therefore, noise has become a significant factor affecting the driving experience. In previous designs, meshing gears were installed in the pump body, with low-pressure oil outside the pump body. The pump body and pump cover were fixedly assembled, and a plastic oil reservoir was installed. In this method, the noise generated by the gear rotation was directly transmitted to the outside through the metal pump body and other fixed connecting parts. Under high speed or high pressure conditions, the noise was easily audible to the outside, resulting in a poor driving experience. Summary of the Invention

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a fluid conveying device structure that is simple in structure and reduces noise generation.

[0004] The technical solution adopted by this utility model to solve the technical problem is a fluid conveying device structure, including an outer shell 1 and a pump body 15. The feature is that a front cover 6 is provided on the left side of the pump body 15, and a rear cover 7 is provided on the right side of the pump body 15. A second sealing ring 14 is provided between the front cover 6 and the rear cover 7 and the pump body 15, and a second bolt 22 tightly locks the front cover 6, the pump body 15 and the rear cover 7. After assembly, they are collectively referred to as internal oil pumps. This internal oil pump has independent operating capability. Independent operating capability means that it has the ability to convey liquid media after applying torque to the rotating parts of the internal oil pump from the outside. The type of internal oil pump is a positive displacement pump, including but not limited to an external gear pump. A seat ring 8 is provided inside the pump body 15. Two sliding bearing countersunk holes 8-1 are provided on the seat ring 8. The sliding bearing 9 is interference-fitted into the sliding bearing countersunk hole 8-1. The drive gear shaft 10-2 of the drive gear 10 is clearance-fitted with the sliding bearing 9. The driven gear shaft 11-1 of the driven gear 11 is clearance-fitted with the other sliding bearing 9. The drive gear transmission part 10-1 is located on one side of the pump front cover 6. The positioning pin 13 is interference-fitted into the positioning pin hole 15-2 on the pump body 15. The positioning pin 13 is positioned in the outer housing positioning pin hole that mates with it inside the outer housing 1. The pump body 15 and the inner wall of the outer housing 1 are sealed with sealing ring 3 16. A spring steel sheet groove 7-5 is provided on the outer end face of the pump rear cover 7. The spring steel sheet 4 is elastically installed in the spring steel sheet groove 7-5. The end of the spring steel sheet 4 elastically contacts the inner end face of the outer housing cover 2. Bolt 1 3 tightly fixes the outer housing 1 and the outer housing cover 2. The outer housing 1 and the outer housing cover 2 are sealed with sealing ring 1 5.

[0005] The beneficial effects of this utility model are as follows: A fluid conveying device structure places an internal oil pump unit within an oil pump cavity composed of an outer shell and an outer cover, forming an oil conveying pump. During operation, the drive gear rotates, and oil enters from the outside through the oil inlet channel of the outer shell into the oil inlet hole of the internal oil pump. The internal oil pump, through the rotation of the external meshing gear, conveys the oil to the cavity between the internal oil pump and the outer shell, and then discharges it outside the pump through the oil outlet channel and oil outlet hole of the outer shell. The internal oil pump is mounted in the outer shell through an elastic element. During operation, the elastic element's buffering effect prevents the vibration generated by the internal oil pump from propagating to the outer shell, thereby reducing the noise generated by the pump's rotation. In addition to the buffering effect of the elastic element, the noise generated by the internal oil pump is also reduced by the high-pressure liquid within the outer shell cavity and the outer shell itself, both of which act as transmission media, thus reducing overall noise generation. Attached Figure Description

[0006] The following description, in conjunction with the accompanying drawings, illustrates specific embodiments.

[0007] Figure 1 is a cross-sectional view of the structure of a fluid transport device.

[0008] Figure 2 is a structural diagram of the seat ring in Figure 1.

[0009] Figure 3 is a structural diagram of the drive gear in Figure 1.

[0010] Figure 4 is a structural diagram of the driven gear in Figure 1.

[0011] Figure 5 is a structural diagram of the pump body in Figure 1.

[0012] Figure 6 is a structural diagram of the pump front cover in Figure 1.

[0013] Figure 7 is a structural diagram of the pump rear cover in Figure 1.

[0014] Figure 8 is a rear view of Figure 7.

[0015] In the diagram, 1 - outer casing; 2 - outer casing cover; 3 - bolt one; 4 - spring steel sheet; 5 - sealing ring one; 6 - pump front cover; 6-1 - through hole; 6-2 - sealing ring groove one; 6-3 - locating pin through hole; 6-4 - oil inlet; 6-5 - threaded hole; 7 - pump rear cover; 7-1 - bolt hole one; 7-2 - locating pin blind hole; 7-3 - sealing ring groove two; 7-4 - oil outlet; 7-5 - spring steel sheet slot; 8 - seat ring; 8-1 - sliding ring. 9 - Bearing countersunk bore; 10 - Sliding bearing; 10 - Drive gear; 10-1 - Drive gear transmission part; 10-2 - Drive gear shaft; 10-3 - Drive gear teeth; 11 - Driven gear; 11-1 - Driven gear shaft; 11-2 - Driven gear teeth; 12 - Bolt II; 13 - Locating pin; 14 - Seal ring II; 15 - Pump body; 15-1 - Gear cavity; 15-2 - Locating pin hole; 15-3 - Bolt hole II; 16 - Seal ring III. Detailed Implementation

[0016] Example 1: A fluid conveying device structure includes a housing 1 and a pump body 15. The pump body 15 serves as an internal oil pump, capable of independent operation. This independent operation capability refers to the ability to convey liquid media after applying torque to the rotating parts of the internal oil pump from the outside. The internal oil pump is a positive displacement pump, including but not limited to an external gear pump. The pump body 15 is connected inside the housing 1, but the internal oil pump is not rigidly connected to the housing. An elastic element is provided on one end face of the pump body 15, with the end of the elastic element contacting the inner wall of the housing 1. When the internal oil pump operates, the pump body 15 vibrates. This vibration is transmitted through the elastic element between the pump body 15 and the housing 1, thereby reducing the noise directly generated by the vibration of the pump body 15. A cavity is formed between the inside of the housing 1 and the outside of the pump body 15, containing hydraulic oil. The high-pressure liquid inside the housing cavity and the housing itself, as both transmission media, also contribute to noise reduction, thus reducing overall noise generation.

[0017] Example 2, referring to Figures 1-8, describes a fluid conveying device structure. A rear cover 7 is provided on the right side of the pump body 15, and a front cover 6 is provided on the left side of the pump body 15. The rear cover 7 has a bolt hole 7-1 and a sealing ring groove 7-3. The front cover 6 has a threaded hole 6-5 and a sealing ring groove 6-2. The pump body 15 has a bolt hole 15-3. The sealing ring 14 is pressed and sealed in the sealing ring groove 7-3 and the sealing ring groove 6-2. The bolt 12 passes through the bolt hole 7-1, the bolt hole 15-3 and the threaded hole 6-5, tightly locking the front cover 6, the pump body 15 and the rear cover 7. A seat ring 8 is provided inside the pump body 15. Two sliding bearing countersunk holes 8-1 are provided on the seat ring 8. Sliding bearings 9 are interference-fitted into the sliding bearing countersunk holes 8-1. The drive gear shaft 10-2 of the drive gear 10 is clearance-fitted with the sliding bearing 9. The driven gear shaft 11-1 of the driven gear 11 is clearance-fitted with the sliding bearing 9. The drive gear teeth 10-3 and 11-2 mesh and transmit power in the gear cavity 15-1 inside the pump body 15. The drive gear transmission part 10-1 on the drive gear 10 passes through the through hole 6-1 on the pump front cover 6, is located in the cavity outside the pump body 15 and inside the outer casing 1, and is connected to the drive assembly. The pump body 15, pump front cover 6, pump rear cover 7, seat ring 8, sealing ring II 14, bolt II 12, drive gear 10, driven gear 11, and sliding bearings 9 together constitute an internal oil pump. The positioning pin 13 is interference-fitted into the positioning pin blind hole 7-2 of the pump rear cover 7, the positioning pin hole 15-2 of the pump body 15, and the positioning pin through hole 6-3 of the pump front cover 6. The positioning pin 13 is positioned in the positioning pin positioning hole of the outer shell 1 that mates with it. The pump front cover 6 of the pump body 15 is sealed to the inner wall of the outer shell 1 by sealing ring 16. Bolt 3 tightly fixes the outer shell 1 and the outer shell cover 2. The outer shell 1 and the outer shell cover 2 are sealed by sealing ring 5, forming a pump cavity between the outer shell 1 and the outer shell cover 2. Two spring steel plate slots 7-5 are provided on the outer end face of the pump rear cover 7. The spring steel plate 4 is elastically inserted into the spring steel plate slots 7-5. The end of the spring steel plate 4 elastically contacts the inner end face of the outer shell cover 2. When the pump body 15 is working, the vibration force generated by the rotation of the gears inside the pump body 15 is greatly buffered by the elasticity of the spring steel plate 4 connected on the pump rear cover 7, thereby greatly reducing the noise generated directly.

[0018] The working principle of this utility model is as follows: The internal oil pump, composed of a pump body 15, a front pump cover 6, a rear pump cover 7, a seat ring 8, a second sealing ring 14, a second bolt 12, a driving gear 10, a driven gear 11, and a sliding bearing 9, is positioned inside the outer casing 1 by a positioning pin 13 mounted on the left front pump cover 6. A spring steel sheet 4 mounted on the right rear pump cover 7 elastically contacts the inner end face of the outer casing cover 2. Hydraulic oil enters through the oil inlet channel inside the outer casing 1 on one side of the front pump cover 6, and enters the internal oil pump through the oil inlet 6-4 on the front pump cover 6. The driving gear transmission part 10-1 is driven to rotate, and the internal oil pump works. The oil flows out from the oil outlet 7-4 on the rear pump cover 7 and enters the pump chamber formed by the seal between the outer casing 1 and the outer casing cover 2. During the operation of the internal oil pump, a large portion of the vibration force generated is buffered by the elasticity of the spring steel plate 4 connected to the pump rear cover 7, thereby reducing noise generation. Furthermore, the noise generated by the internal oil pump is significantly reduced in its transmission to the outside by the barrier of the high-pressure liquid inside the pump chamber and the outer casing 1 itself, thus mitigating the impact of noise on the driver. This type of oil pump can be used in steering systems as a power steering pump to provide flow to the steering system.

Claims

1. A fluid delivery device structure comprising an outer housing (1) and a pump body (15), characterized in that, The pump body (15) is connected inside the outer shell (1). An elastic element is provided on one side end face of the pump body (15). The end of the elastic element touches the inner wall of the outer shell (1). A cavity is formed between the inner shell (1) and the outer pump body (15), and hydraulic oil is contained in the cavity.

2. A fluid delivery device structure according to claim 1, wherein The pump body (15) is an internal oil pump, and the internal oil pump is not tightly connected to the outer casing (1).

3. A fluid delivery device structure according to claim 1, wherein Bolt 1 (3) secures the outer shell (1) and the outer shell cover (2) together, and seals the outer shell (1) and the outer shell cover (2) with sealing ring 1 (5).

4. A fluid delivery device structure according to claim 3, wherein A front cover (6) is provided on the left side of the pump body (15), and a rear cover (7) is provided on the right side of the pump body (15). Bolt 2 (22) tightly locks the front cover (6), pump body (15) and rear cover (7). After assembly, they are collectively referred to as internal oil pumps. A seat ring (8) is provided inside the pump body (15). Two sliding bearing countersunk holes (8-1) are provided on the seat ring (8). The sliding bearing (9) is installed in the sliding bearing countersunk hole (8-1). The drive gear shaft (10-2) of the drive gear (10) is fitted with the sliding bearing (9). The driven gear shaft (11-1) of the driven gear (11) is fitted with another sliding bearing (9). A spring steel plate slot (7-5) is provided on the outer end face of the rear cover (7). The spring steel plate (4) is elastically installed in the spring steel plate slot (7-5). The end of the spring steel plate (4) elastically contacts the inner end face of the outer cover (2).

5. The structure of a fluid conveying device according to claim 4, characterized in that, A sealing ring 2 (14) is provided between the pump front cover (6) and the pump rear cover (7) and the pump body (15).

6. A fluid delivery device structure according to claim 4, wherein, The drive gear transmission unit (10-1) is located on one side of the pump front cover (6).

7. The structure of a fluid conveying device according to claim 4, characterized in that, The positioning pin (13) is installed in the positioning pin hole (15-2) on the pump body (15), and the positioning pin (13) is positioned in the outer shell positioning pin hole that matches it inside the outer shell (1).

8. The fluid delivery device structure of claim 4, wherein, The pump body (15) and the inner wall of the outer casing (1) are sealed with sealing ring three (16).

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