Lead protection mechanism on refrigerator fan

Abstract

The utility model relates to a kind of lead protection mechanism on refrigerator fan, including upper shell and lower shell;Two to four resting grooves for resting wiring harness and the insertion slot for fixing metal terminal are equipped on lower shell, and the rear end of insertion slot is communicated with resting groove;Two to four limiting grooves for limiting wiring harness and injection hole are equipped on upper shell, and limiting groove is compatible with the front end of resting groove, and the upper shell compatible with resting groove is equipped with injection cavity, and injection hole is communicated with injection cavity;Protection unit and clamping unit are equipped along the length direction of upper shell and lower shell, and upper shell and lower shell are fixed by clamping unit limiting clamping, and protection unit is located in the inside of clamping unit;The utility model is equipped with resting groove, injection cavity and injection hole in upper and lower shell, when refrigerator is running for a long time and accompanied by sufficient water vapor, can prevent metal terminal from not producing corrosion phenomenon, to improve the service life of fan motor.

Description

Technical Field

[0001] This utility model belongs to the technical field of lead wire protection mechanism, and in particular relates to a lead wire protection mechanism for a refrigerator fan. Background Technology

[0002] The fan motor inside the refrigerator is a mature product, but it is connected to a wiring harness box. The wiring harness box contains metal terminals and wires. Some of the metal terminals and wires are exposed outside the wiring harness box, while others are built inside. The metal terminals and wires inside the wiring harness box are connected together. Because the refrigerator is quite humid, and the existing wiring harness boxes have almost no protective structure to protect the metal terminals and wires from corrosion, the metal terminals inside the wiring harness box are prone to corrosion during long-term operation of the refrigerator, which greatly shortens the lifespan of the refrigerator's fan motor. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a lead wire protection mechanism for refrigerator fans that can prevent corrosion of metal terminals and improve the service life of fan motors.

[0004] The purpose of this utility model is achieved through the following technical solution: the lead wire protection mechanism on this refrigerator fan includes an upper housing and a lower housing; the lower housing is provided with two to four placement slots for placing wire harnesses and insertion slots for fixing metal terminals, the insertion slots communicating with the rear end of the placement slots; the upper housing is provided with two to four limiting slots for limiting the wire harnesses and injection holes, the limiting slots being adapted to the front end of the placement slots, the upper housing adapted to the placement slots being provided with an injection cavity, the injection holes communicating with the injection cavity; a protection unit and a snap-fit ​​unit are provided along the length direction of the upper housing and the lower housing, the upper housing and the lower housing being limited and fixed by the snap-fit ​​unit, and the protection unit being located inside the snap-fit ​​unit.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, by providing a support groove, injection cavity and injection hole in the upper and lower shells, corrosion of the metal terminals can be prevented when the refrigerator is running for a long time and accompanied by sufficient water vapor, thereby improving the service life of the fan motor; by setting a protective unit, the injection liquid will not flow out through the gap between the support groove and the wire harness, and the upper and lower shells are combined into one piece after injection molding, and by setting a snap-fit ​​unit, the upper and lower shells can be well limited during the assembly process.

[0006] Preferably, the support groove is arranged along the length direction of the lower housing, the insertion groove is arranged along the height direction of the lower housing, and a partition block is provided on the groove wall of the support groove. When the upper housing and the lower housing are closed, the upper part of the partition block is located inside the injection cavity. The orientation of the support groove and the insertion groove makes it easier to fix the wire harness and the metal terminal, and the partition block makes the injection liquid between the support grooves more evenly distributed during the filling process.

[0007] Preferably, the number of injection holes corresponds one-to-one with the number of support slots; this ensures that during the injection molding process, each support slot can be filled through its respective injection hole, and combined with the baffle block, the stability and flow intervals during the injection process are more uniform.

[0008] Preferably, the protective unit includes a groove on the upper housing and a groove on the lower housing. The two grooves are symmetrically distributed and perpendicular to the support groove and the injection cavity. The length of the groove is equal to the width of the injection cavity. By placing the protective unit in the grooves of the upper and lower housings, they are integrated after injection molding. The distribution structure of the grooves also prevents the injection molding liquid from flowing out through the gap between the support groove and the wire harness.

[0009] Preferably, the snap-fit ​​unit has two parts, namely a first snap-fit ​​unit and a second snap-fit ​​unit. The first snap-fit ​​unit and the second snap-fit ​​unit are located on both sides of the housing, respectively. The first snap-fit ​​unit is a plug-in type structure, and the second snap-fit ​​unit is a plug-in type structure. By setting two snap-fit ​​units and located on both sides of the housing, good positioning can be achieved during the assembly of the upper and lower housings.

[0010] Preferably, the first snap-fit ​​unit includes pin posts disposed on both sides of the upper housing and pin holes disposed on both sides of the lower housing, wherein the upper housing is inserted into the pin holes on the lower housing through the pin posts; the above structure makes the assembly process more convenient.

[0011] Preferably, the second snap-fit ​​unit includes a plug on the upper housing and a slot on the lower housing, wherein the upper housing is inserted into the slot on the lower housing via the plug; the above structure makes the assembly process more convenient.

[0012] Preferably, the outer peripheral walls of the upper and lower housings are provided with two rings of slots, and the slots are located on both sides of the injection hole; this allows the lead wire protection mechanism to be well limited during the assembly process with the fan, resulting in better stability after installation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the explosion structure of the lead wire protection mechanism of this utility model.

[0014] Figure 2 This is a schematic diagram of the upper shell structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the lower shell structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the actual application structure of this utility model.

[0017] The labels in the attached diagram are as follows: 1. Upper housing; 2. Lower housing; 3. Protective unit; 4. Snap-fit ​​unit; 5. Snap-fit ​​groove; 11. Limiting groove; 12. Injection hole; 13. Injection cavity; 21. Support groove; 22. Insertion groove; 23. Partition block; 31. Groove; 41. First snap-fit ​​unit; 42. Second snap-fit ​​unit; 41-1. Pin post; 41-2. Pin hole; 42-1. Insert block; 42-2. Slot. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figures 1 to 4 As shown, this utility model includes an upper housing 1 and a lower housing 2. The lower housing 2 is provided with two to four placement grooves 21 for placing wire harnesses and insertion grooves 22 for fixing metal terminals. The insertion grooves 22 are connected to the rear ends of the placement grooves 21. The upper housing 1 is provided with two to four limiting grooves 11 and injection holes 12 for limiting the wire harnesses. The limiting grooves 11 are adapted to the front ends of the placement grooves 21. The upper housing 1 adapted to the placement grooves 21 is provided with an injection cavity 13. The injection holes 12 are connected to the injection cavity 13. A protective unit 3 and a snap-fit ​​unit 4 are provided along the length direction of the upper housing 1 and the lower housing 2. The upper housing 1 and the lower housing 2 are limited and snap-fitted and fixed by the snap-fit ​​unit 4. The protective unit 3 is located inside the snap-fit ​​unit 4. The injection liquid mentioned above is BMC material.

[0019] The placement groove 21 is arranged along the length direction of the lower housing 2, the insertion groove 22 is arranged along the height direction of the lower housing 2, and the groove wall of the placement groove 21 is provided with a partition block 23, and when the upper housing 1 and the lower housing 2 are closed, the upper part of the partition block 23 is located inside the injection molding cavity 13.

[0020] The number of injection holes 12 corresponds to the number of mounting slots 21, and they are distributed in a one-to-one correspondence.

[0021] The protective unit 3 includes a groove 31 on the upper housing 1 and a groove 31 on the lower housing 2. The two grooves 31 are symmetrically distributed and perpendicular to the support groove 21 and the injection cavity 13. The length of the groove 31 is equal to the width of the injection cavity 13.

[0022] The snap-fit ​​unit 4 has two parts, namely the first snap-fit ​​unit 41 and the second snap-fit ​​unit 42. The first snap-fit ​​unit 41 and the second snap-fit ​​unit 42 are located on both sides of the housing, respectively. The first snap-fit ​​unit 41 is a plug-in type structure, and the second snap-fit ​​unit 42 is a plug-in type structure.

[0023] The first snap-fit ​​unit 41 includes pin posts 41-1 provided on both sides of the upper housing 1 and pin holes 41-2 provided on both sides of the lower housing 2. The upper housing 1 is inserted into the pin holes 41-2 on the lower housing 2 through the pin posts 41-1.

[0024] The second snap-fit ​​unit 42 includes a plug 42-1 disposed on the upper housing 1 and a slot 42-2 disposed on the lower housing 2. The upper housing 1 is inserted into the slot 42-2 on the lower housing 2 through the plug 42-1.

[0025] Two rings of grooves 5 are provided on the outer peripheral walls of the upper shell 1 and the lower shell 2, and the grooves 5 are located on both sides of the injection hole 12.

[0026] The injection molding principle of this utility model is as follows: First, each metal terminal is inserted into the insertion slot 22, and each wire harness is inserted into the placement slot 21. One end of the wire harness is connected to one end of the metal terminal, and the other end of the wire harness extends out of the lead wire protection mechanism. Then, the first snap-fit ​​unit 41 and the second snap-fit ​​unit 42 are inserted into each other and assembled, and placed in the fixture to limit and fix the upper and lower housings. Finally, the injection liquid is injected into the housing through the injection hole 12 on the upper housing 1 and formed.

[0027] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lead wire protection mechanism for a refrigerator fan, comprising an upper housing (1) and a lower housing (2); characterized in that: The lower housing (2) is provided with two to four placement slots (21) for placing wire harnesses and insertion slots (22) for fixing metal terminals. The insertion slots (22) are connected to the rear end of the placement slots (21). The upper housing (1) is provided with two to four limiting slots (11) for limiting wire harnesses and injection holes (12). The limiting slots (11) are adapted to the front end of the placement slots (21). The upper housing (1) adapted to the placement slots (21) is provided with an injection cavity (13). The injection holes (12) are connected to the injection cavity (13). A protective unit (3) and a snap-fit ​​unit (4) are provided along the length of the upper housing (1) and the lower housing (2). The upper housing (1) and the lower housing (2) are limited and snap-fitted by the snap-fit ​​unit (4). The protective unit (3) is located inside the snap-fit ​​unit (4).

2. The lead wire protection mechanism on the refrigerator fan according to claim 1, characterized in that: The placement groove (21) is arranged along the length direction of the lower housing (2), the insertion groove (22) is arranged along the height direction of the lower housing (2), and the groove wall of the placement groove (21) is provided with a partition block (23). When the upper housing (1) and the lower housing (2) are closed, the upper part of the partition block (23) is located inside the injection cavity (13).

3. The lead wire protection mechanism on the refrigerator fan according to claim 1, characterized in that: The number of injection holes (12) corresponds to the number of mounting slots (21) and is distributed in a one-to-one correspondence.

4. The lead wire protection mechanism on the refrigerator fan according to claim 1, characterized in that: The protective unit (3) includes a groove (31) on the upper housing (1) and a groove (31) on the lower housing (2). The two grooves (31) are symmetrically distributed and perpendicular to the support groove (21) and the injection cavity (13). The length of the groove (31) is equal to the width of the injection cavity (13).

5. The lead wire protection mechanism on the refrigerator fan according to claim 1, characterized in that: The snap-fit ​​unit (4) is provided in two parts, namely a first snap-fit ​​unit (41) and a second snap-fit ​​unit (42). The first snap-fit ​​unit (41) and the second snap-fit ​​unit (42) are located on both sides of the housing, wherein the first snap-fit ​​unit (41) is a plug-in structure and the second snap-fit ​​unit (42) is a plug-in block structure.

6. The lead wire protection mechanism on the refrigerator fan according to claim 5, characterized in that: The first snap-fit ​​unit (41) includes a pin post (41-1) disposed on both sides of the upper housing (1) and a pin hole (41-2) disposed on both sides of the lower housing (2). The upper housing (1) is inserted into the pin hole (41-2) on the lower housing (2) through the pin post (41-1).

7. The lead wire protection mechanism on the refrigerator fan according to claim 5, characterized in that: The second snap-fit ​​unit (42) includes a plug (42-1) disposed on the upper housing (1) and a slot (42-2) disposed on the lower housing (2). The upper housing (1) is inserted into the slot (42-2) on the lower housing (2) through the plug (42-1).

8. The lead wire protection mechanism on the refrigerator fan according to claim 1, characterized in that: The upper housing (1) and the lower housing (2) are provided with two rings of slots (5) on their outer peripheral walls, and the slots (5) are located on both sides of the injection hole (12).

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