Combination of circuit board and wire seat of water pump

Abstract

The invention discloses a combination of a circuit board and a wire seat of a water pump, which is arranged on a shell of the water pump, and comprises the following components: a circuit board which is provided with an edge which is defined as a mounting edge and is provided with two positioning holes which are separated from the mounting edge by a preset distance; the wire seat is provided with two extension arms extending outwards, each extension arm is provided with a positioning column extending upwards, and at least one of the wire seat and the top end of each positioning column of the two extension arms is provided with a pressing eave. Wherein the two positioning columns penetrate through the two positioning holes of the circuit board, the two extension arms are located below the circuit board, and the pressing brim is located above the circuit board and presses the circuit board.

Description

Technical Field

[0001] The present invention relates to a water pump, in particular to a combination of a circuit board and a wire holder of the water pump. Background Art

[0002] The known drainage pump, for example, the invention patent with the publication number CN100491739C, discloses a pump and its manufacturing method. This invention patent mainly places a partition on a mold, then places a stator and a control component on the partition, and then places the mold into a shell for injection molding, so that the shell covers the stator and the control component.

[0003] Although the aforementioned technology discloses the technical concept of encapsulating the stator and control components with an injection molded shell, it is found in actual operation that during injection molding, there is a large pressure and pushing force when injecting liquid-like plastic raw materials into the mold. Therefore, the wire holder originally placed on the circuit board and used to connect the wires will be easily pushed away from the circuit board due to the pushing, resulting in defective products.

[0004] As can be seen from the above, the current wire holder is not fixed on the circuit board in advance, which makes it easy to have defective products during subsequent injection molding. This problem needs to be solved. Summary of the invention

[0005] In view of the deficiencies of the prior art, the main purpose of the present invention is to provide a combination of a circuit board and a wire holder for a water pump, wherein the wire holder can be well fixed on the circuit board so as not to be separated from the circuit board due to pressure during injection molding, thereby solving the problem of defective products that may be produced thereby.

[0006] In order to achieve the above-mentioned purpose, the present invention proposes a combination of a circuit board and a wire holder for a water pump, which is arranged in a housing of a water pump, and the combination of the circuit board and the wire holder for the water pump includes: a circuit board, having an edge defined as a mounting edge, and having two positioning holes spaced a predetermined distance from the mounting edge, and the portion of the circuit board between each of the positioning holes and the mounting edge is respectively defined as an insertion portion; and a wire holder, having two extending arms extending outward, each of the extending arms having a positioning column extending upward, and an insertion space is formed between the positioning column of each of the extending arms and the wire holder, and at least one of the three of the wire holder and the top end of each of the positioning columns of the two extending arms has a pressing eaves; wherein the two positioning columns pass through the two positioning holes of the circuit board, and the two extending arms are located below the circuit board, the two insertion portions of the circuit board are located in the two insertion spaces of the wire holder, and the pressing eaves are located above the circuit board and press the circuit board.

[0007] From the above scheme, it can be seen that the advantage of the present invention is that: since the wire holder of the present invention is stably fixed on the circuit board, the wire holder will not detach from the circuit board during the process of injection molding to form the shell, thereby ensuring the quality of the finished product and solving the problem of defective products that may be produced in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a cross-sectional schematic diagram of the first preferred embodiment of the present invention assembled in a water pump;

[0009] Figure 2 It is a combined top view of the first preferred embodiment of the present invention;

[0010] Figure 3 for Figure 2 Exploded diagram;

[0011] Figure 4 A three-dimensional diagram of a wire holder according to a first preferred embodiment of the present invention;

[0012] Figure 5 A three-dimensional diagram of a wire holder for passing wires through a first preferred embodiment of the present invention;

[0013] Figure 6 For along Figure 2 Section view along section line 6-6;

[0014] Figure 7 The first preferred embodiment of the present invention is a schematic diagram of the operation of the present invention, showing the cross-sectional state of the present invention assembled with the partition plate and the stator;

[0015] Figure 8 for Figure 7 A cross-sectional schematic diagram of the combination of the above-mentioned components being placed in a mold;

[0016] Fig. 9 Another schematic diagram of the first preferred embodiment of the present invention is a schematic diagram showing the state of forming the shell;

[0017] Fig.10 It is a cross-sectional schematic diagram of a second preferred embodiment of the present invention;

[0018] Wherein, the reference numerals are:

[0019] 10-Combination of the circuit board and the wire holder of the water pump;

[0020] 11- Circuit board;

[0021] 12-installation edge;

[0022] 121-embedded part;

[0023] 14- positioning hole;

[0024] 16- insertion part;

[0025] 21- Wire holder;

[0026] 22- extension arm;

[0027] 221- positioning column;

[0028] 23- Insert into space;

[0029] 24-pressed eaves;

[0030] 26-groove;

[0031] 28-through hole;

[0032] 31- electric wire;

[0033] 91-water pump;

[0034] 92-housing;

[0035] 94- stator;

[0036] 96-partition;

[0037] 100-mold;

[0038] 10'- Combination of water pump circuit board and wire holder;

[0039] 11'-circuit board;

[0040] 14'-positioning hole;

[0041] 21'-Wire holder;

[0042] 221'- positioning column;

[0043] 24' - Pressed eaves. DETAILED DESCRIPTION

[0044] In order to explain the technical features of the present invention in detail, the following preferred embodiments are given and described in conjunction with the accompanying drawings, wherein:

[0045] like Figures 1 to 6 As shown, the present invention illustrates a combination of a circuit board and a wire holder of a water pump 10 through a first preferred embodiment, which is provided in a housing 92 of a water pump 91. The combination of a circuit board and a wire holder of the water pump 91 10 mainly consists of a circuit board 11 and a wire holder 21, wherein:

[0046] The circuit board 11 has an edge defined as a mounting edge 12 and two positioning holes 14 separated from the mounting edge 12 by a predetermined distance. The portion of the circuit board 11 between each positioning hole 14 and the mounting edge 12 is defined as an insertion portion 16 .

[0047] The wire holder 21 has two extension arms 22 extending outward, each of the extension arms 22 has a positioning column 221 extending upward at its end, and an insertion space 23 is formed between the positioning column 221 of each extension arm 22 and the wire holder 21. The wire holder 21 has a pressing eave 24. In the first embodiment, the pressing eave 24 is formed by the wire holder 21 extending upward and then laterally.

[0048] Among them, the two positioning columns 221 pass through the two positioning holes 14 of the circuit board 11, and the two extension arms 22 are located below the circuit board 11, the two insertion parts 16 of the circuit board 11 are located in the two insertion spaces 23 of the wire holder 21, and the pressing eaves 24 are located above the circuit board 11 and press the circuit board 11.

[0049] In the first embodiment, the wire holder 21 has an embedding groove 26 formed by being recessed from the outside to the inside, and the circuit board 11 has an embedding portion 121 protruding outward from the mounting edge 12, and the embedding portion 121 is embedded in the embedding groove 26. The wire holder 21 has a plurality of through holes 28 for a plurality of wires 31 to pass through, and the plurality of wires 31 can be designed to be located between the two extension arms 22. After the housing 92 is formed by the injection molding step, a portion of the wire holder 21 is exposed from the housing 92, and the rest is covered by the housing 92, and the circuit board 11 is located in the housing 92.

[0050] The structure of the first embodiment has been described above. Next, the state of the first embodiment during the injection molding process will be described.

[0051] like Figure 2 and Figure 6 As shown, the wire holder 21 is first assembled to the circuit board 11, the pressing eaves 24 are pressed on the circuit board 11, and the two positioning columns 221 also pass through the two positioning holes 14, thereby forming a stable clamping and positioning relationship, and the wire holder 21 is stably fixed on the circuit board 11.

[0052] Then, if Figure 7 As shown, the combination of the circuit board 11 and the wire holder 21 is placed on a stator 94 and a partition 96. Figure 8 As shown, the aforementioned composition is placed in a mold 100. Then, Fig. 9 As shown, the shell 92 is formed by injection molding, and the shell 92 covers the stator 94, the partition 96, the circuit board 11 and part of the wire holder 21, so that a part of the wire holder 21 is exposed outside the shell 92.

[0053] Since the wire holder 21 is stably fixed on the circuit board 11 , the wire holder 21 will not be separated from the circuit board 11 during the injection molding process, thereby ensuring the quality of the finished product and solving the problem of defective products in the prior art.

[0054] like Fig.10 As shown, the present invention uses a second preferred embodiment to illustrate a combination 10' of a circuit board and a wire holder of a water pump, which is mainly similar to the first embodiment mentioned above, except that:

[0055] The pressing eaves 24' are not extended from the wire holder 21', but are formed by the ends of the two positioning posts 221'. In actual implementation, the two positioning posts 221' can be made of plastic material, or the entire wire holder 21' and the two positioning posts 221' can be made of plastic material. After passing through the two positioning holes 14' of the circuit board 11', the ends of the two positioning posts 221' are heated to melt and deform into mushroom-shaped shapes, that is, a pressing eaves 24' are formed at the ends of the two positioning posts 221', and pressed on the circuit board 11'.

[0056] The rest of the structure and the effects that can be achieved in the second embodiment are the same as those of the first embodiment, and will not be described again here.

[0057] It is worthwhile to add that the pressing eaves 24 of the first embodiment are provided on the wire holder 21, while the two pressing eaves 24' of the second embodiment are formed on the two positioning posts 221'. However, in fact, the wire holder and the two positioning posts may be provided with pressing eaves. Since this can be directly understood from the first and second embodiments, it is not shown in the drawings. This has a greater effect of pressing the circuit board, and can better fix the wire holder on the circuit board.

[0058] The above description is merely the content of the present invention described through the embodiments, and it cannot be used to limit the scope of the patent application of the present invention. All simple changes or equivalent implementations made according to the scope of the patent application of the present invention and the contents of the patent specification should be covered by the scope of the patent application of the present invention.

Claims

1. A combination of a circuit board and a wire holder for a water pump, arranged in a housing of a water pump, characterized in that: The combination of the water pump circuit board and the wire holder includes: A circuit board having an edge defined as a mounting edge and two positioning holes spaced a predetermined distance from the mounting edge, wherein a portion of the circuit board between each positioning hole and the mounting edge is defined as an insertion portion; as well as A wire holder, having two extension arms extending outward, each of the extension arms having a positioning column extending upward, an insertion space being formed between the positioning column of each extension arm and the wire holder, and at least one of the wire holder and the top of each positioning column of the two extension arms having a pressing eave; The two positioning posts pass through the two positioning holes of the circuit board, and the two extension arms are located below the circuit board, the two insertion parts of the circuit board are located in the two insertion spaces of the wire holder, and the pressing eaves are located above the circuit board and press the circuit board.

2. The combination of a circuit board and a wire holder for a water pump according to claim 1, characterized in that: The wire seat has an embedding groove which is recessed from the outside to the inside, and the circuit board has an embedding portion which protrudes outward from the installation edge, and the embedding portion is embedded in the embedding groove.

3. The combination of a circuit board and a wire holder for a water pump according to claim 1, characterized in that: The wire seat has a plurality of through holes for allowing a plurality of wires to pass through, and the plurality of wires are located between the two extension arms.

4. The combination of a circuit board and a wire holder for a water pump according to claim 1, characterized in that: The pressed eaves are formed by extending the electric wire seat upward and then laterally.

5. The combination of a circuit board and a wire holder for a water pump according to claim 1, characterized in that: Each of the positioning posts is made of plastic material, and the top of each of the positioning posts is provided with a pressed eave, which is formed by hot-melting deformation of the top of each of the positioning posts.

6. The combination of a circuit board and a wire holder for a water pump according to claim 1, characterized in that: The wire seat is partially exposed from the shell, and the rest is covered by the shell. The circuit board is located inside the shell.

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