Liquid supply pump convenient for overhauling circuit board

Abstract

The utility model discloses a liquid supply pump convenient for overhauling a circuit board, and belongs to the technical field of liquid supply pumps. The liquid supply pump comprises a shell, a support, a rotor, a winding, a circuit board, a sealing ring, an end cover and screws, the support is installed on the shell, an inner cavity is defined by the support and the shell, the rotor, the winding and the circuit board are installed on the support, the rotor is arranged in the inner cavity, and the circuit board is installed at the end, away from the inner cavity, of the support and connected with the winding. The end cover is installed at the end, away from the inner cavity, of the shell or the support through screws, the sealing ring is arranged between the support and the end cover, the end cover is provided with a protruding structure, the support and the sealing ring are arranged on the protruding structure in a sleeved mode, and the sealing ring is arranged between the support and the protruding structure. According to the liquid supply pump, the circuit board is convenient to disassemble and overhaul, meanwhile, the sealing effect is guaranteed, and the problem that in the prior art, the circuit board installed on the support and away from the inner cavity is inconvenient to disassemble and overhaul due to the fact that pouring sealant is fixedly connected is solved.

Description

Technical Field

[0001] This utility model belongs to the field of liquid supply pump technology, specifically a liquid supply pump that facilitates the maintenance of circuit boards. Background Technology

[0002] The Chinese invention patent, published on June 14, 2024, under the publication number CN 118188391 A, describes a high-sealing liquid supply pump. The invention involves a housing fitted onto a bracket, and the liquid supply pump is assembled through the cooperation of a third potting compound, a bracket, and a bottom cover. Although this solves the problem of high risk of leakage when using bolts alone, the potting compound provides a fixed connection, which makes it inconvenient to disassemble and repair the circuit board mounted on the bracket, which is far from the inner cavity. Utility Model Content

[0003] Purpose of the utility model: To provide a liquid supply pump that facilitates the maintenance of circuit boards. Through the cooperation of screws, raised structures and rubber rings, the circuit board is easily disassembled and maintained while ensuring a sealing effect. This solves the problem in the prior art where the potting compound is fixedly connected and the circuit board is mounted on a bracket far from the inner cavity, making it inconvenient to disassemble and maintain.

[0004] The technical solution of this utility model is as follows: a liquid supply pump that facilitates the maintenance of circuit boards includes: a housing, a bracket, a rotor, windings, a circuit board, a sealing ring, an end cap, and screws.

[0005] The bracket is mounted on the outer shell, and the bracket and the outer shell together enclose an inner cavity. The rotor, windings and circuit board are mounted on the bracket. The rotor is disposed inside the inner cavity. The circuit board is mounted on the end of the bracket away from the inner cavity. The circuit board and the windings are connected.

[0006] The end cap is installed on the end of the outer shell or bracket away from the inner cavity by screws, and the sealing ring is disposed between the bracket and the end cap.

[0007] The end cap has a raised structure, and the bracket and sealing ring are fitted onto the raised structure, so that the sealing ring is positioned between the bracket and the raised structure.

[0008] In a further embodiment, the protrusion structure is an annular protrusion.

[0009] The end of the bracket near the end cap has an annular structure, and the annular structure of the bracket is fitted onto the protruding structure of the end cap.

[0010] In a further embodiment, the protrusion structure is a cylindrical protrusion.

[0011] The end of the bracket near the end cap has an annular structure, and the annular structure of the bracket is fitted onto the protruding structure of the end cap.

[0012] In a further embodiment, the outer wall of the protruding structure near the support is a ramp structure, and the outer diameter of the ramp structure near the inner cavity is smaller than the outer diameter of the end away from the inner cavity.

[0013] The initial inner diameter of the sealing ring is smaller than the outer diameter of the end of the ramp structure furthest from the inner cavity.

[0014] When the bracket is fitted onto the raised structure, and the sealing ring is positioned between the end faces of the bracket and the first end cap, the inner diameter of the sealing ring at its endpoint is equal to the outer diameter of the end of the ramp structure furthest from the inner cavity. The inner diameter of the sealing ring changes through the cooperation of the bracket and the ramp structure of the raised structure, so that the sealing ring applies a pre-tightening force to the raised structure at its endpoint, which facilitates assembly and improves the sealing effect of the sealing ring.

[0015] In a further embodiment, the winding is mounted on the end of the bracket away from the inner cavity, and the bracket isolates the winding from the inner cavity, further facilitating the assembly of the winding.

[0016] In a further embodiment, the circuit board is mounted at the end of the winding away from the inner cavity, facilitating the connection and routing of the circuit board to the winding.

[0017] In a further embodiment, the winding is disposed within the inner cavity, and the winding is disposed within the potting compound.

[0018] The beneficial effects of this utility model are as follows: This application sets a sealing ring between the bracket and the end cap, and makes the bracket and the sealing ring fit over the protruding structure, so that the bracket, the end cap and the protruding structure together with the sealing ring form a sealing structure. This makes the liquid supply pump easy to disassemble and repair the circuit board while ensuring the sealing effect. It solves the problem that the existing potting compound is fixedly connected and the circuit board installed on the bracket is far from the inner cavity, making it inconvenient to disassemble and repair. Attached Figure Description

[0019] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present invention in which the winding is installed at the end of the bracket away from the inner cavity.

[0020] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present invention in which the winding is disposed within the inner cavity.

[0021] The attached figures are labeled as follows: 1. Housing; 2. Bracket; 3. Rotor; 4. Impeller; 5. Winding; 6. Circuit board; 7. Sealing ring; 8. End cap; 81. Protruding structure; 9. Screw; 10. Encapsulating adhesive. Detailed Implementation

[0022] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0023] This utility model discloses a liquid supply pump that facilitates the maintenance of circuit boards. Through the cooperation of screws, raised structures and rubber rings, it facilitates the disassembly and maintenance of circuit boards while ensuring a sealing effect. It solves the problem that the existing potting compound is fixedly connected and the circuit boards installed on the bracket far from the inner cavity are inconvenient to disassemble and maintain.

[0024] like Figure 1 and 2 The liquid supply pump shown includes: housing 1, bracket 2, rotor 3, impeller 4, winding 5, circuit board 6, sealing ring 7, end cover 8, and screw 9.

[0025] The bracket 2 is installed on the outer shell 1. The bracket 2 and the outer shell 1 together form an inner cavity. The rotor 3, winding 5 and circuit board 6 are installed on the bracket 2. The impeller 4 is installed on the rotor 3. The rotor 3 and impeller 4 are located in the inner cavity. The circuit board 6 is installed at the end of the bracket 2 away from the inner cavity. The circuit board 6 is connected to the winding 5. The winding 5 and the rotor 3 are in corresponding positions, so that the rotor 3 drives the impeller 4 to rotate.

[0026] End cap 8 is installed on the end of housing 1 or bracket 2 away from the inner cavity by screws 9. Sealing ring 7 is disposed between bracket 2 and end cap 8. Figure 1 and 2 In the embodiment shown, the end cap 8 is installed on the bracket 2 by screws 9. When the housing 1 and the bracket 2 are connected by the prior art method of the housing 1 being sleeved on the bracket 2, the end cap 8 can be connected to the housing 1 by screws 9, and the bracket 2 can be placed between the end cap 8 and the housing 1.

[0027] The end cap 8 has a raised structure 81, and the bracket 2 and the sealing ring 7 are fitted onto the raised structure 81, so that the sealing ring 7 is positioned between the bracket 2 and the raised structure 81.

[0028] The outer shell 1 and the bracket 2 can form a sealed inner cavity by screws 9 and sealing rings 7, or the outer shell 1 can be fitted onto the bracket 2 to form a sealed inner cavity, as in the prior art.

[0029] The outer casing 1 is provided with an inlet and an outlet that communicate with the inner cavity.

[0030] like Figure 1 The protrusion structure 81 shown is an annular protrusion.

[0031] The end of the bracket 2 near the end cap 8 is a ring structure, and the ring structure of the bracket 2 is fitted onto the protruding structure 81 of the end cap 8.

[0032] In other embodiments, the protrusion structure 81 may also be a cylindrical protrusion.

[0033] The end of the bracket 2 near the end cap 8 is a ring structure, and the ring structure of the bracket 2 is fitted onto the protruding structure 81 of the end cap 8.

[0034] like Figure 1 The outer wall of the protruding structure 81 near the support 2 is a ramp structure, and the outer diameter of the ramp structure near the inner cavity is smaller than the outer diameter of the end away from the inner cavity.

[0035] The initial inner diameter of the sealing ring 7 is smaller than the outer diameter of the end of the ramp structure away from the inner cavity, while the initial outer diameter of the sealing ring 7 is larger than the inner diameter of the annular structure of the bracket 2, which allows the bracket 2 to push the sealing ring 7 away from the inner cavity when assembling the end cap 8.

[0036] When the bracket 2 is fitted onto the protruding structure 81, and the sealing ring 7 is positioned between the end faces of the bracket 2 and the first end cover 8, the inner diameter of the end of the sealing ring 7 is equal to the outer diameter of the end of the ramp structure furthest from the inner cavity.

[0037] The initial inner diameter of the sealing ring 7 refers to the factory nominal state of the sealing ring 7 in its natural state without being stretched or compressed, and the final inner diameter of the sealing ring 7 refers to the state when the sealing ring 7 is in contact with the end face of the mounting shell and the first end cover 8.

[0038] like Figure 1 The winding 5 shown is installed at the end of the bracket 2 away from the inner cavity, the circuit board 6 is installed at the end of the winding 5 away from the inner cavity, and the base plate of the bracket 2 is placed between the winding 5 and the inner cavity to isolate the winding 5 and the inner cavity.

[0039] like Figure 2 The winding 5 shown is disposed in the inner cavity and in the potting compound 10. The connection method between the winding 5 and the circuit board 6, the method of disposing of the winding 5 in the potting compound 10, and the positioning method of the winding 5 and the potting compound 10 are existing technologies and are not limited here.

[0040] The installation of conductive lines on circuit board 6 in the above embodiments is existing technology and is not limited here.

[0041] Instructions for use: When it is necessary to disassemble and repair the circuit board 6, simply remove the screws 9 to separate the end cover 8, sealing ring 7 and bracket 2 to repair the circuit board 6.

[0042] Before reassembling, it is necessary to check whether the sealing ring 7 needs to be replaced.

[0043] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A liquid supply pump that facilitates circuit board maintenance, characterized in that, include: Housing, bracket, rotor, windings, circuit board, sealing ring, end caps, and screws; The bracket is mounted on the outer shell, and the bracket and the outer shell together enclose an inner cavity. The rotor, windings and circuit board are mounted on the bracket. The rotor is disposed inside the inner cavity. The circuit board is mounted on the end of the bracket away from the inner cavity. The circuit board and the windings are connected. The end cap is installed on the outer shell or bracket away from the inner cavity by screws, and the sealing ring is disposed between the bracket and the end cap; The end cap has a raised structure, and the bracket and sealing ring are fitted onto the raised structure, so that the sealing ring is positioned between the bracket and the raised structure.

2. The liquid supply pump for easy circuit board maintenance according to claim 1, characterized in that, The protrusion structure is a ring-shaped protrusion; The end of the bracket near the end cap has an annular structure, and the annular structure of the bracket is fitted onto the protruding structure of the end cap.

3. The liquid supply pump for easy circuit board maintenance according to claim 1, characterized in that, The protrusion structure is a cylindrical protrusion; The end of the bracket near the end cap has an annular structure, and the annular structure of the bracket is fitted onto the protruding structure of the end cap.

4. A liquid supply pump for easy circuit board maintenance according to claim 2 or 3, characterized in that, The outer wall of the protruding structure near the support is a ramp structure, and the outer diameter of the ramp structure near the inner cavity is smaller than the outer diameter of the end away from the inner cavity. The initial inner diameter of the sealing ring is smaller than the outer diameter of the end of the ramp structure furthest from the inner cavity; When the bracket is fitted onto the raised structure, and the sealing ring is positioned between the end faces of the bracket and the first end cap, the inner diameter of the sealing ring at its endpoint is equal to the outer diameter of the end of the ramp structure furthest from the inner cavity.

5. The liquid supply pump for easy circuit board maintenance according to claim 1, characterized in that, The winding is installed at the end of the bracket away from the inner cavity.

6. The liquid supply pump for easy circuit board maintenance according to claim 5, characterized in that, The circuit board is mounted at the end of the winding away from the inner cavity.

7. The liquid supply pump for easy circuit board maintenance according to claim 1, characterized in that, The winding is disposed within the inner cavity and within the potting compound.

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