Self-aligning buffer structure of automotive electric water pump

Abstract

The utility model discloses a kind of alignment buffer structures of automobile electronic water pump, including water pump shell and machine shell sequentially connected from top to bottom, the water pump shell center is provided with through slot, rotatingly connected with shaft in the through slot, the shaft is fixedly connected with the through slot between alignment sealing ring of adaptation, the end portion of the shaft in the machine shell is fixedly connected with water jacket of adaptation with the inner wall of machine shell, the water jacket is connected with positioning head, the central axis of the positioning head coincides with the central axis of the shaft, the inner wall of the machine shell is adapted to be provided with positioning groove, and the positioning head is connected in the positioning groove. By setting alignment sealing ring is connected in the positioning groove of machine shell with the water jacket of positioning head, the positioning accuracy of whole can be greatly improved, the overall life of water pump is greatly improved, avoid part displacement, greatly prolong the life of whole machine.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic water pump technology, and in particular to a self-aligning buffer structure for an automotive electronic water pump. Background Technology

[0002] Automotive electronic water pumps are miniature self-priming water pumps used for water circulation, cooling, or vehicle water supply systems. Due to their excellent performance in automotive thermal management systems, they are widely used. The working principle of an automotive electronic water pump is as follows: the circular motion of the motor causes the diaphragm inside the pump to reciprocate through a mechanical device, compressing and stretching the air in the pump chamber (fixed volume). Under the action of a one-way valve, positive pressure is created at the drain outlet (the actual output pressure depends on the assistance received at the drain outlet and the pump's characteristics); a vacuum is created at the inlet, thus generating a pressure difference with the external atmospheric pressure. Under the action of this pressure difference, water is forced into the inlet and then discharged from the drain outlet. Driven by the kinetic energy transmitted by the motor, water is continuously drawn in and discharged, forming a relatively stable flow rate.

[0003] Existing electronic water pumps using an integrated water-proof sleeve and shaft design typically consist of a shaft that fits into the pump housing. During operation, the shaft may wobble, and prolonged wear between the shaft and housing can lead to misalignment and pump failure. Furthermore, prolonged exposure to temperature can cause axial displacement of the water-proof sleeve assembly, resulting in leakage from the seals and ultimately, complete pump failure.

[0004] As disclosed in patent document CN202320801717.0, an automotive electronic water pump belongs to the field of automotive electronic water pump technology. It includes a housing comprising an upper housing, a lower housing, and side housings. Rectangular side plates are integrally formed on both sides of the upper and lower housings. Screw holes are formed on the surface of the rectangular side plates. The lower part of the upper housing is detachably connected to the upper part of the lower housing via the rectangular side plates, screw holes, bolts, and nuts. Both ends of the upper and lower housings are detachably connected to the side housings via circular mounting plates, screw holes, and bolts. A water pump is installed inside the housing. This automotive electronic water pump consists of four parts: an upper housing, a lower housing, and two side housings, facilitating installation and disassembly. The aforementioned automotive electronic water pump has a leakage detection system, which can promptly detect water pump leaks for timely repair.

[0005] The above technical solutions are mainly for leak detection, but they do not help extend the lifespan of the overall machine structure, meaning that the above technical problems still need to be solved. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a self-aligning buffer structure for an automotive electronic water pump, which can reduce shaft oscillation and thus effectively extend the overall lifespan of the pump.

[0007] According to a first aspect embodiment of the present invention, an auto-aligning buffer structure for an automotive electronic water pump includes a water pump housing and a housing connected sequentially from top to bottom. A through groove is provided in the center of the water pump housing, and a rotating shaft is rotatably connected in the through groove. A matching self-aligning sealing ring is fixedly connected between the rotating shaft and the through groove. A water-proof sleeve adapted to the inner wall of the housing is fixedly connected to the end of the rotating shaft located inside the housing. A positioning head is connected to the water-proof sleeve, and the central axis of the positioning head coincides with the central axis of the rotating shaft. A positioning groove is provided on the inner wall of the housing, and the positioning head is connected to the positioning groove.

[0008] The self-aligning buffer structure of the automotive electronic water pump according to the present utility model has at least the following beneficial effects: by setting a self-aligning sealing ring and a water-proof sleeve with a positioning head connected in the positioning groove of the housing, the overall positioning accuracy can be greatly improved, the overall life of the water pump can be significantly extended, the displacement of parts can be avoided, and the life of the whole machine can be greatly extended.

[0009] According to some embodiments of the present invention, a buffer layer and a first wear-resistant layer are sequentially connected from the outside to the inside on the inner wall of the positioning groove, and the positioning head abuts against the buffer layer.

[0010] According to some embodiments of this utility model, the buffer layer is made of an elastic material.

[0011] According to some embodiments of the present invention, a second wear-resistant layer is connected to the positioning head, and the second wear-resistant layer abuts against the buffer layer.

[0012] According to some embodiments of the present invention, a circuit board is connected to the bottom of the inner wall of the housing, and there is a gap between the circuit board and the waterproof sleeve.

[0013] According to some embodiments of the present invention, the circuit board has a first through hole adapted to the positioning groove.

[0014] According to some embodiments of this utility model, a positioning post is connected to the center of the bottom of the inner wall of the housing, the positioning groove is opened at the center of the positioning post, and the positioning post passes through the first through hole and abuts against the positioning head.

[0015] According to some embodiments of the present invention, a shielding cover is connected to the circuit board, the shielding cover is disposed on the circuit board, and the shielding cover is adapted to the first through hole to have a second through hole, and the positioning post passes through the first through hole and the second through hole in sequence and is connected to the positioning head.

[0016] According to some embodiments of the present invention, a friction plate adapted to the rotating shaft is fixedly connected to the bottom of the water pump housing located in the circumferential direction of the through groove, and the friction plate is annular in shape.

[0017] According to some embodiments of this utility model, the water pump housing is made of stainless steel, the machine housing is made of stainless steel, the self-aligning sealing ring is made of rubber, and the self-aligning sealing ring is annular in shape.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram of the self-aligning buffer structure of the automotive electronic water pump according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the self-aligning buffer structure of an automotive electronic water pump according to another embodiment of the present invention.

[0022] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0023] 100. Pump housing; 110. Through groove; 200. Housing; 210. Positioning groove; 211. Buffer layer; 212. First wear-resistant layer; 220. Positioning post; 230. Reinforcing rib; 300. Rotating shaft; 311. Self-aligning sealing ring; 312. Friction plate; 320. Waterproof sleeve; 330. Positioning head; 331. Second wear-resistant layer; 410. Circuit board; 411. First through hole; 420. Shielding cover; 421. Second through hole. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] refer to Figure 1 , Figure 2 as well as Figure 3 As shown, the self-aligning buffer structure of the automotive electronic water pump according to an embodiment of the present invention includes a water pump housing 100 and a housing 200 connected sequentially from top to bottom. A through groove 110 is provided in the center of the water pump housing 100. A rotating shaft 300 is rotatably connected in the through groove 110. A matching self-aligning sealing ring 311 is fixedly connected between the rotating shaft 300 and the through groove 110. A water-proof sleeve 320 that matches the inner wall of the housing 200 is fixedly connected to the end of the rotating shaft 300 located inside the housing 200. A positioning head 330 is connected to the water-proof sleeve 320. The central axis of the positioning head 330 coincides with the central axis of the rotating shaft 300. A positioning groove 210 is provided on the inner wall of the housing 200. The positioning head 330 is connected in the positioning groove 210.

[0029] In actual use, by setting the self-aligning sealing ring 311 and the water-proof sleeve 320 with the positioning head 330 connected in the positioning groove 210 of the housing 200, the overall positioning accuracy can be greatly improved, the overall life of the water pump can be significantly extended, the displacement of parts can be avoided, and the life of the whole machine can be greatly extended.

[0030] In some specific embodiments of this utility model, it may also have the following additional technical features: a buffer layer 211 and a first wear-resistant layer 212 are connected sequentially from the outside to the inside on the inner wall of the positioning groove 210, and the positioning head 330 abuts against the buffer layer 211.

[0031] In some specific embodiments of this utility model, it may also have the following additional technical features: the buffer layer 211 is made of an elastic material. Specifically, the material used for the buffer layer 211 is a rigid sponge. The rigid sponge has both cushioning elasticity and a certain degree of wear resistance, extending the time before damage and reducing the number of times maintenance is required.

[0032] In some specific embodiments of this utility model, it may also have the following additional technical features: a second wear-resistant layer 331 is connected to the positioning head 330, and the second wear-resistant layer 331 abuts against the buffer layer 211. Specifically, both the first wear-resistant layer 212 and the second wear-resistant layer 331 are made of wear-resistant ceramic material. Wear-resistant ceramic material is a commonly used wear-resistant technology in the prior art, and its specific structure and principle will not be described in detail here.

[0033] Through the above design, the positioning head 330 of the water-proof sleeve 320 is elastically fixed and supported by the elastic buffer layer 211. At this time, the positioning head 330 is pressing the buffer layer 211, so that during long-term operation, the wear between the positioning head 330 and the positioning groove 210 is reduced due to the presence of the first wear-resistant layer 212 and the second wear-resistant layer 331. The elastically compressed buffer layer 211 can automatically adjust and compensate according to the operation of the overall structure, thereby achieving the effect of self-aligning buffer.

[0034] In some specific embodiments of this utility model, it may also have the following additional technical features: a circuit board 410 is connected to the bottom of the inner wall of the housing 200, and there is a gap between the circuit board 410 and the water-proof sleeve 320.

[0035] In some specific embodiments of this utility model, it may also have the following additional technical features: the circuit board 410 has a first through hole 411 adapted to the positioning groove 210.

[0036] In some specific embodiments of this utility model, it may also have the following additional technical features: a positioning post 220 is connected to the center of the bottom of the inner wall of the housing 200, a positioning groove 210 is formed at the center of the positioning post 220, and the positioning post 220 passes through the first through hole 411 and abuts against the positioning head 330. Furthermore, the positioning post 220 is fixedly connected to the bottom of the inner wall of the housing 200 in the circumferential direction by reinforcing ribs 230. By setting the reinforcing ribs 230, the connection strength between the positioning post 220 and the housing 200 and the overall structural strength can be effectively strengthened.

[0037] Through the above design, the length of the rotating shaft 300 can be reduced by designing the positioning column 220, thereby reducing the deflection of the rotating shaft 300 and reducing the sway of the rotating shaft 300.

[0038] In some specific embodiments of this utility model, it may also have the following additional technical features: a shielding cover 420 is connected to the circuit board 410, the shielding cover 420 covers the circuit board 410, and the shielding cover 420 is adapted to the first through hole 411 to open a second through hole 421, and the positioning post 220 passes through the first through hole 411 and the second through hole 421 in sequence and is connected to the positioning head 330.

[0039] By setting up the shield 420, the influence of other components of the electric water pump on the circuit board 410 can be reduced. The design of the circuit board 410 makes it convenient to leave a wire outlet hole (not shown in the figure) on the housing 200, so that the wires extending from the wire outlet hole and connected to the circuit board 410 can be connected to form a LIN bus (not shown in the figure), which facilitates testing and maintenance.

[0040] It should be noted that the circuit board 410 and the shielding cover 420 are technical solutions well known to those skilled in the art, and their specific structures and principles will not be described in detail here.

[0041] In some specific embodiments of this utility model, it may also have the following additional technical features: a friction plate 312 adapted to the rotating shaft 300 is fixedly connected to the bottom of the water pump housing 100 located circumferentially in the through groove 110. The friction plate 312 is annular in shape. The presence of the friction plate 312 allows it to first abut against the outer wall of the rotating shaft 300 when the rotating shaft 300 swings, thereby generating a harsh noise to alert the operator that the electronic water pump has malfunctioned and needs timely maintenance.

[0042] In some specific embodiments of this utility model, it may also have the following additional technical features: the pump housing 100 is made of stainless steel, the housing 200 is made of stainless steel, the self-aligning sealing ring 311 is made of rubber, and the self-aligning sealing ring 311 is annular in shape.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A self-aligning buffer structure for an automotive electronic water pump, characterized in that, The system includes a pump housing (100) and a machine housing (200) connected sequentially from top to bottom. The pump housing (100) has a through groove (110) in its center. A rotating shaft (300) is rotatably connected in the through groove (110). A matching self-aligning sealing ring (311) is fixedly connected between the rotating shaft (300) and the through groove (110). A water-proof sleeve (320) that matches the inner wall of the machine housing (200) is fixedly connected to the end of the rotating shaft (300) located inside the machine housing (200). A positioning head (330) is connected to the water-proof sleeve (320). The central axis of the positioning head (330) coincides with the central axis of the rotating shaft (300). A positioning groove (210) is provided on the inner wall of the machine housing (200) and the positioning head (330) is connected in the positioning groove (210).

2. The self-aligning buffer structure of the automotive electronic water pump according to claim 1, characterized in that, The inner wall of the positioning groove (210) is connected from the outside to the inside with a buffer layer (211) and a first wear-resistant layer (212), and the positioning head (330) abuts against the buffer layer (211).

3. The self-aligning buffer structure of the automotive electronic water pump according to claim 2, characterized in that, The buffer layer (211) is made of an elastic material.

4. The self-aligning buffer structure of the automotive electronic water pump according to claim 2, characterized in that, The positioning head (330) is connected to a second wear-resistant layer (331), which abuts against the buffer layer (211).

5. The self-aligning buffer structure of the automotive electronic water pump according to claim 1, characterized in that, A circuit board (410) is connected to the bottom of the inner wall of the housing (200), and there is a gap between the circuit board (410) and the waterproof sleeve (320).

6. The self-aligning buffer structure of the automotive electronic water pump according to claim 5, characterized in that, The circuit board (410) has a first through hole (411) that matches the positioning groove (210).

7. The self-aligning buffer structure of the automotive electronic water pump according to claim 6, characterized in that, A positioning post (220) is connected to the center of the bottom of the inner wall of the housing (200). The positioning groove (210) is opened at the center of the positioning post (220). The positioning post (220) passes through the first through hole (411) and abuts against the positioning head (330).

8. The self-aligning buffer structure of the automotive electronic water pump according to claim 7, characterized in that, A shielding cover (420) is connected to the circuit board (410). The shielding cover (420) covers the circuit board (410), and the shielding cover (420) has a second through hole (421) adapted to the first through hole (411). The positioning post (220) passes through the first through hole (411) and the second through hole (421) in sequence and is connected to the positioning head (330).

9. The self-aligning buffer structure of the automotive electronic water pump according to claim 1, characterized in that, A friction plate (312) adapted to the rotating shaft (300) is fixedly connected to the bottom of the water pump housing (100) located around the through groove (110). The friction plate (312) is annular in shape.

10. The self-aligning buffer structure of the automotive electronic water pump according to claim 1, characterized in that, The pump housing (100) is made of stainless steel, the housing (200) is made of stainless steel, the self-aligning sealing ring (311) is made of rubber, and the self-aligning sealing ring (311) is annular in shape.

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