Water pump assembly structure and electronic water pump using same

Abstract

The utility model discloses a water pump assembly structure and an electronic water pump using the same. The water pump assembly structure at least comprises a pump shell, a pump cavity structure shell and a pump cover. The pump shell extends outwards in the radial direction of the pump shell to form a first fixing edge. The pump cavity structure shell extends outwards in the radial direction of the pump cavity structure shell to form a second fixing edge. The pump cover extends outwards in the radial direction of the pump cover to form a third fixing edge. The pump cavity structure shell is arranged on the opening side of the pump shell, and the pump cover covers the opening side of the pump shell so as to cover the pump cavity structure shell and the opening side of the pump shell. The first fixing edge of the pump shell, the second fixing edge of the pump cavity structure shell and the third fixing edge of the pump cover are sequentially fixed in the axial direction and form a sealing structure. According to the electronic water pump, the pump cover and the pump shell do not need to be assembled through screws and buckles, the assembling procedure of the electronic water pump is omitted, pressure is applied to the second fixing edge of the pump cavity structure shell through the third fixing edge of the pump cover, and the second fixing edge of the pump cavity structure shell is of a fixed structure and a sealed structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic water pump and its spare part technical field, concretely is a water pump assembly structure and the electronic water pump of application thereof. BACKGROUND

[0002] Electronic water pump has higher output efficiency and can realize accurate flow control, therefore, electronic water pump is widely used in automobile, household appliance and industrial equipment, especially new energy automobile usually has two or even more electronic water pumps, and electronic water pump is the power source of the cooling system of new energy automobile, and the power battery, drive motor and the like of new energy automobile need to rely on electronic water pump to drive coolant circulation cooling.

[0003] The Chinese invention patent publication text with the publication number CN118934646A and the name of 《rotor assembly and electronic water pump applied thereto》, and the Chinese utility model patent publication text with the publication number CN221347302U and the name of 《pump shell stator assembly and electronic water pump applied thereto》, both disclose typical electronic water pump structure.

[0004] The above-mentioned electronic water pump is provided with a pump shell, a pump cavity structure shell (chamber member) and a pump cover, wherein the inner side space of the pump cavity structure shell constitutes a rotor chamber for supporting and accommodating a rotor assembly, the inner side space of the pump cover constitutes an impeller chamber for supporting and accommodating an impeller, and the space between the pump shell and the pump cavity structure shell is used for accommodating a stator assembly.

[0005] However, the pump shell, pump cavity structure shell (chamber member) and pump cover of the electronic water pump in the prior art have relatively complex assembly structure and sealing structure between the three, which makes the assembly process of the electronic water pump complex, and the material cost and assembly cost are relatively high, in addition, the above-mentioned structure usually only relies on a sealing ring to realize sealing, and there is a risk of liquid medium leakage due to aging and damage of the sealing ring.

[0006] In summary, how to provide an assembly structure for the pump shell, pump cavity structure shell and pump cover of the electronic water pump, which is structurally reasonable, reliable in sealing performance and low in cost, has become one of the problems to be solved. INVENTION CONTENTS

[0007] The utility model aims at providing a water pump assembly structure and an electronic water pump applied thereto, which can provide an assembly structure for the pump shell, pump cavity structure shell and pump cover of the electronic water pump, which is structurally reasonable, reliable in sealing performance and low in cost.

[0008] To achieve the above object, the utility model provides the following technical scheme: a water pump assembly structure is applied to an electronic water pump, and the electronic water pump at least includes a pump shell, a pump cavity structure shell and a pump cover; the pump shell extends outward along its radial direction and forms a first fixed edge; the pump cavity structure shell extends outward along its radial direction and forms a second fixed edge; the pump cover extends outward along its radial direction and forms a third fixed edge; the pump cavity structure shell is assembled into the opening side of the pump shell, and the pump cover covers the opening side of the pump shell to cover the opening side of the pump cavity structure shell and the pump shell; the first fixed edge of the pump shell, the second fixed edge of the pump cavity structure shell and the third fixed edge of the pump cover are sequentially fixed along the axial direction and form a sealing structure.

[0009] In the above technical scheme, the first fixed edge of the pump shell is provided with a matching groove; the second fixed edge of the pump cavity structure shell is embedded into the matching groove of the pump shell; the third fixed edge of the pump cover is fixed with the first fixed edge of the pump shell at a position outside the matching groove; the third fixed edge of the pump cover can apply pressure to the second fixed edge of the pump cavity structure shell, so that the second fixed edge of the pump cavity structure shell is press-fit in the matching groove of the pump shell, and a sealing structure is formed between the second fixed edge of the pump cavity structure shell and the first fixed edge of the pump shell, and a sealing structure is also formed between the third fixed edge of the pump cover and the second fixed edge of the pump cavity structure shell.

[0010] In the above technical scheme, the first fixed edge of the pump shell is provided with an inner fixed groove at a position outside the matching groove; the third fixed edge of the pump cover is provided with a second press-fit rib; the second press-fit rib of the pump cover is embedded and fixed in the inner fixed groove of the pump shell.

[0011] In the above technical scheme, the top surface of the second press-fit rib of the pump cover is provided with an inner ultrasonic line; after the inner ultrasonic line of the pump cover and the inner fixed groove of the pump shell are subjected to ultrasonic welding treatment, a fixed structure is formed.

[0012] In the above technical scheme, the first fixed edge of the pump shell is provided with an outer fixed groove at a position outside the inner fixed groove; the third fixed edge of the pump cover is provided with an outer ultrasonic line at a position outside the inner ultrasonic line; after the outer ultrasonic line of the pump cover and the outer fixed groove of the pump shell are subjected to ultrasonic welding treatment, a fixed structure is formed.

[0013] In the above technical scheme, the matching groove of the pump shell is further sunken to form a first sealing ring groove; a first sealing ring is embedded in the first sealing ring groove.

[0014] In the technical scheme, the first pressing rib of the pump cavity structure shell is embedded into the first sealing ring groove of the pump shell and exerts pressure on the first sealing ring.

[0015] In the technical scheme, the second sealing ring groove is formed at the second fixed edge of the pump cavity structure shell, and the second sealing ring is embedded in the second sealing ring groove.

[0016] In the technical scheme, the third pressing rib of the pump cover is embedded into the second sealing ring groove of the pump cavity structure shell and exerts pressure on the second sealing ring.

[0017] An electronic water pump comprising the water pump assembly structure.

[0018] Compared with the prior art, the water pump assembly structure and the electronic water pump using the same have the following beneficial effects: the first fixed edge of the pump shell, the second fixed edge of the pump cavity structure shell and the third fixed edge of the pump cover are sequentially fixed in the axial direction and form a sealing structure, so that the pump cover and the pump shell do not need to be assembled by screws and buckles, thereby saving the assembly process of the electronic water pump, and meanwhile, the second fixed edge of the pump cavity structure shell is pressed by the third fixed edge of the pump cover, so that the second fixed edge of the pump cavity structure shell obtains a fixed structure and a sealing structure, thereby further saving the assembly process of the electronic water pump and making the electronic water pump of the embodiment have a reasonable structure, reliable sealing performance and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the utility model.

[0020] Figure 2 It is an exploded view of the utility model.

[0021] Figure 3 It is a sectional view of the utility model.

[0022] Figure 4 It is Figure 3 A local enlarged view of the A in the figure.

[0023] The reference signs are as follows: 1, pump shell; 11, first fixed edge; 12, matching groove; 121, first sealing ring groove; 13, inner fixed groove; 14, outer fixed groove; 2, pump cavity structure shell; 21, second fixed edge; 22, first pressing rib; 23, second sealing ring groove; 3, pump cover; 31, third fixed edge; 32, second pressing rib; 321, inner ultrasonic line; 33, third pressing rib; 34, outer ultrasonic line; 4, first sealing ring; 5, second sealing ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] The embodiment provides a water pump assembly structure, which is applied to an electronic water pump.

[0026] Please refer to Figures 1-4 The electronic water pump at least comprises a pump shell 1, a pump cavity structure shell 2 and a pump cover 3.

[0027] The pump shell 1 and the pump cavity structure shell 2 are both half shells made of engineering plastic material, and at least one side of the pump shell 1 and the pump cavity structure shell 2 is configured as an open side; the pump cover 3 is a cover body made of engineering plastic material, one side of which is an open side and is provided with a water inlet and a water outlet.

[0028] The pump shell 1 extends outward along its radial direction to form a first fixing edge 11, and actually, the first fixing edge 11 is integrally injection molded with the pump shell 1 and forms a ring structure outwardly protruding from the pump shell 1 along the radial direction.

[0029] The pump cavity structure shell 2 extends outward along its radial direction to form a second fixing edge 21, and actually, the second fixing edge 21 is integrally injection molded with the pump cavity structure shell 2 and forms a ring structure outwardly protruding from the pump cavity structure shell 2 along the radial direction.

[0030] The pump cover 3 extends outward along its radial direction to form a third fixing edge 31, and actually, the third fixing edge 31 is integrally injection molded with the pump cover 3 and forms a ring structure outwardly protruding from the pump cover 3 along the radial direction.

[0031] The pump cavity structure shell 2 is loaded into the open side of the pump shell 1, and the pump cover 3 is covered on the open side of the pump shell 1 to cover the open side of the pump cavity structure shell 2 and the pump shell 1; the first fixing edge 11 of the pump shell 1, the second fixing edge 21 of the pump cavity structure shell 2 and the third fixing edge 31 of the pump cover 3 are sequentially fixed along the axial direction and form a sealing structure.

[0032] Specifically, the first fixed edge 11 of the pump shell 1 is formed with a matching groove 12, which is actually integrally injection molded with the first fixed edge 11 and has a ring-shaped concave structure; the second fixed edge 21 of the pump cavity structure shell 2 is embedded into the matching groove 12 of the pump shell 1; the third fixed edge 31 of the pump cover 3 is fixed with the first fixed edge 11 of the pump shell 1 at a position outside the matching groove 12; the third fixed edge 31 of the pump cover 3 can apply pressure to the second fixed edge 21 of the pump cavity structure shell 2, so that the second fixed edge 21 of the pump cavity structure shell 2 is press-fit fixed in the matching groove 12 of the pump shell 1, and a sealing structure is formed between the second fixed edge 21 of the pump cavity structure shell 2 and the first fixed edge 11 of the pump shell 1, and a sealing structure is also formed between the third fixed edge 31 of the pump cover 3 and the second fixed edge 21 of the pump cavity structure shell 2.

[0033] Further specifically, the first fixed edge 11 of the pump shell 1 is formed with an inner fixed groove 13 at a position outside the matching groove 12, which is actually integrally injection molded with the first fixed edge 11 and has a ring-shaped concave structure; the third fixed edge 31 of the pump cover 3 is formed with a second press-fit rib 32 at a position outside the inner fixed groove 13, which is actually integrally injection molded with the third fixed edge 31 and has a ring-shaped convex rib structure; the second press-fit rib 32 of the pump cover 3 is embedded and fixed in the inner fixed groove 13 of the pump shell 1.

[0034] Further specifically, the top surface of the second press-fit rib 32 of the pump cover 3 is provided with an inner ultrasonic line 321; after ultrasonic welding treatment, the inner ultrasonic line 321 of the pump cover 3 and the inner fixed groove 13 of the pump shell 1 form a fixed structure; in this way, the mutual fixation of the first fixed edge 11 of the pump shell 1 and the third fixed edge 31 of the pump cover 3 is achieved.

[0035] Further, the first fixed edge 11 of the pump shell 1 is formed with an outer fixed groove 14 at a position outside the inner fixed groove 13, which is actually integrally injection molded with the first fixed edge 11 and has a ring-shaped concave structure; the third fixed edge 31 of the pump cover 3 is formed with an outer ultrasonic line 34 at a position outside the inner ultrasonic line 321; after ultrasonic welding treatment, the outer ultrasonic line 34 of the pump cover 3 and the outer fixed groove 14 of the pump shell 1 form a fixed structure; in this way, the fixed structure of the first fixed edge 11 of the pump shell 1 and the third fixed edge 31 of the pump cover 3 is further reinforced.

[0036] Further, the matching groove 12 of the pump shell 1 is further sunken to form a first sealing ring groove 121, which is actually integrally injection molded with the matching groove 12 and has a ring-shaped concave structure; a first sealing ring 4 is embedded in the first sealing ring groove 121, which is a rubber sealing ring in this embodiment.

[0037] Further, the first pressing rib 22 of the pump cavity structure shell 2 is formed at the second fixed edge 21 of the pump cavity structure shell 2, and the first pressing rib 22 is integrally injection molded with the second fixed edge 21 and has a ring-shaped convex rib structure. The first pressing rib 22 of the pump cavity structure shell 2 is embedded into the first sealing ring groove 121 of the pump shell 1 and exerts pressure on the first sealing ring 4. In this way, the first sealing ring 4 is deformed under pressure to fill the entire first sealing ring groove 121, so that the first fixed edge 11 of the pump shell 1 and the second fixed edge 21 of the pump cavity structure shell 2 have good sealing performance.

[0038] Further, the second sealing ring groove 23 is formed at the second fixed edge 21 of the pump cavity structure shell 2, and the second sealing ring groove 23 is integrally injection molded with the second fixed edge 21 and has a ring-shaped concave structure. The second sealing ring 5 is embedded in the second sealing ring groove 23, and in this embodiment, the second sealing ring 5 is a rubber sealing ring.

[0039] Further, the third pressing rib 33 of the pump cover 3 is formed at the third fixed edge 31 of the pump cover 3, and the third pressing rib 33 is integrally injection molded with the third fixed edge 31 and has a ring-shaped convex rib structure. The third pressing rib 33 of the pump cover 3 is embedded into the second sealing ring groove 23 of the pump cavity structure shell 2 and exerts pressure on the second sealing ring 5. In this way, the second sealing ring 5 is deformed under pressure to fill the entire second sealing ring groove 23, so that the second fixed edge 21 of the pump cavity structure shell 2 and the third fixed edge 31 of the pump cover 3 have good sealing performance.

[0040] In the water pump assembly structure of this embodiment, the inner ultrasonic line 321 of the pump cover 3 and the inner fixed groove 13 of the pump shell 1 form a fixed structure after ultrasonic welding, and the outer ultrasonic line 34 of the pump cover 3 and the outer fixed groove 14 of the pump shell 1 form a fixed structure after ultrasonic welding. The fixed structures formed by the two ultrasonic weldings stably and reliably fix the pump cover 3 and the pump shell 1 as a whole, and the pump cover 3 and the pump shell 1 do not need to be assembled by screws and buckles, saving the assembly process of the electronic water pump. The third fixed edge 31 of the pump cover 3 can exert pressure on the second fixed edge 21 of the pump cavity structure shell 2, so that the second fixed edge 21 of the pump cavity structure shell 2 is pressed and fixed in the matching groove 12 of the pump shell 1. At this time, the first pressing rib 22 of the pump cavity structure shell 2 is embedded into the first sealing ring groove 121 of the pump shell 1 and exerts pressure on the first sealing ring 4, so that the first fixed edge 11 of the pump shell 1 and the second fixed edge 21 of the pump cavity structure shell 2 have good sealing performance. The third pressing rib 33 of the pump cover 3 is embedded into the second sealing ring groove 23 of the pump cavity structure shell 2 and exerts pressure on the second sealing ring 5, so that the second fixed edge 21 of the pump cavity structure shell 2 and the third fixed edge 31 of the pump cover 3 have good sealing performance.

[0041] The embodiment also provides an electronic water pump comprising the water pump assembly structure.

[0042] The water pump assembly structure and the electronic water pump using the same of the embodiment have the first fixing edge 11 of the pump shell 1, the second fixing edge 21 of the pump cavity structure shell 2 and the third fixing edge 31 of the pump cover 3 fixed and sealed in sequence along the axial direction, so that the pump cover 3 and the pump shell 1 are fixed without screws and buckles, the assembly process of the electronic water pump is saved, meanwhile, the second fixing edge 21 of the pump cavity structure shell 2 is fixed and sealed by the third fixing edge 31 of the pump cover 3, the assembly process of the electronic water pump is further saved, and the electronic water pump of the embodiment has a reasonable structure, reliable sealing performance and low cost.

[0043] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A water pump assembly structure, applied in an electronic water pump, wherein the electronic water pump includes at least a pump casing, a pump chamber structure shell, and a pump cover; characterized in that, The pump casing extends outward along its radial direction to form a first fixed edge; The pump chamber structure shell extends outward along its radial direction to form a second fixed edge; The pump cover extends outward along its radial direction to form a third fixed edge; The pump chamber structure shell is installed into the opening side of the pump housing, and the pump cover is closed on the opening side of the pump housing to cover the pump chamber structure shell and the opening side of the pump housing. The first fixed edge of the pump casing, the second fixed edge of the pump cavity structure shell, and the third fixed edge of the pump cover are sequentially fixed along the axial direction to form a sealing structure.

2. The water pump assembly structure according to claim 1, characterized in that, A mating groove is formed at the first fixed edge of the pump casing; The second fixing edge of the pump chamber structure shell is embedded in the mating groove of the pump shell; The third fixing edge of the pump cover is fixed to the first fixing edge of the pump housing at a position further outward than the mating groove. The third fixing edge of the pump cover can apply pressure to the second fixing edge of the pump cavity structure shell, so that the second fixing edge of the pump cavity structure shell is pressed and fixed in the mating groove of the pump shell, and a sealing structure is formed between the second fixing edge of the pump cavity structure shell and the first fixing edge of the pump shell, and a sealing structure is also formed between the third fixing edge of the pump cover and the second fixing edge of the pump cavity structure shell.

3. The water pump assembly structure according to claim 2, characterized in that, The first fixed edge of the pump housing has an inner fixed groove formed at a position further outward than the mating groove; A second press-fit rib is formed at the third fixed edge of the pump cover; The second press-fit rib of the pump cover is embedded and fixed in the inner fixing groove of the pump housing.

4. The water pump assembly structure according to claim 3, characterized in that, An internal ultrasonic line is provided on the top surface of the second pressing rib of the pump cover. The inner ultrasonic line of the pump cover and the inner fixing groove of the pump housing are ultrasonically welded to form a fixed structure.

5. The water pump assembly structure according to claim 4, characterized in that, The first fixing edge of the pump housing has an outer fixing groove formed at a position further outward than the inner fixing groove; The third fixed edge of the pump cover has an outer ultrasonic line formed at a position further outward than the inner ultrasonic line; The outer ultrasonic line of the pump cover and the outer fixing groove of the pump housing are ultrasonically welded to form a fixed structure.

6. The water pump assembly structure according to any one of claims 2-4, characterized in that, The mating groove of the pump casing is further lowered to form the first sealing ring groove; A first sealing ring is embedded in the first sealing ring groove.

7. The water pump assembly structure according to claim 6, characterized in that, A first pressing rib is formed at the second fixed edge of the pump cavity structure shell; The first pressing rib of the pump chamber structure shell is embedded into the first sealing ring groove of the pump shell and applies pressure to the first sealing ring.

8. The water pump assembly structure according to any one of claims 2-4, characterized in that, A second sealing ring groove is formed at the second fixed edge of the pump cavity structure shell; A second sealing ring is embedded in the second sealing ring groove.

9. The water pump assembly structure according to claim 8, characterized in that, A third pressing rib is formed at the third fixing edge of the pump cover; The third press-fit rib of the pump cover is embedded into the second sealing ring groove of the pump cavity structure shell and applies pressure to the second sealing ring.

10. An electronic water pump, characterized in that, The pump assembly structure includes any one of claims 1-9.

Images