Flexible connection structure for cooling fan

Abstract

The utility model relates to the technical field of vehicle heat dissipation devices, and discloses a flexible connection structure for a heat dissipation fan, which comprises a wind collection cover, a flexible sealing sleeve, a hoop and a wind protection ring, the air outlet end of the flexible sealing sleeve is connected to the side wall of the left end of the air protection ring in a sleeving mode. A connecting convex ring is arranged on the air collecting cover, the air inlet end of the flexible sealing sleeve is connected to the connecting convex ring in a sleeved mode, and the flexible sealing sleeve is locked to the connecting convex ring through the hoop. The flexible connecting structure for the cooling fan can ensure that the connecting convex ring of the air collecting cover is more stably and firmly connected with the flexible sealing sleeve in a sealed mode, the situation that the air collecting cover is separated from the flexible sealing sleeve due to vibration of the air collecting cover is effectively avoided, then the air leakage problem is effectively avoided, and the cooling effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle cooling devices, specifically to a flexible connection structure for a cooling fan. Background Technology

[0002] In a car's cooling system, air flows sequentially through the radiator and the fan shroud before converging and then being cooled by a fan in the engine compartment. The radiator is fixed to the vehicle body, the fan shroud is mounted on the radiator, and the fan is connected to the engine; during operation, the fan shroud, fan, etc., will generate a certain amplitude. To prevent the fan and fan shroud from colliding during driving, sufficient clearance must be provided between them for relative movement.

[0003] However, a certain gap must be maintained between the fan and the shroud, and the connection between the fan and the shroud must be sealed to prevent air leakage and affect the heat dissipation effect.

[0004] Based on this, existing technology, such as CN214698034U, provides a connection structure between a windproof ring with guide vanes and a radiator air collector shroud. This structure includes a windproof ring with guide vanes, a radiator air collector shroud, and a sealing ring. The sealing ring has a front opening and a rear opening at its two ends, with the front opening fitted onto the rear end of the air collector shroud. The inner diameter of the front opening gradually increases from back to front and then gradually decreases. The front end of the windproof ring has an annular step, and the rear opening fits onto the annular step. The rear opening is secured to the windproof ring by a clamp located in an annular groove. A limiting structure is provided on the annular step. This connection structure improves the reliability of the connection between the clamp, sealing ring, and windproof ring, helping to reduce air leakage.

[0005] However, the length of the rear connecting part (or sleeve part) of the existing air collector hood is usually shorter than the length of the front connecting part (or sleeve part) of the air guard ring. In this existing connection structure, the sealing ring is simply sleeved on the rear end of the air collector hood, without any other structure to make the connection between the air collector hood and the sealing ring more stable and secure. Therefore, when the air collector hood vibrates or shakes, because the length of the rear connecting part of the air collector hood is relatively short, the rear connecting part of the air collector hood is more likely to detach from the sealing ring, and thus this existing connection structure is difficult to effectively solve the air leakage problem. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a flexible connection structure for cooling fans.

[0007] Based on this, the present invention discloses a flexible connection structure for a cooling fan, including an air collector cover, a flexible sealing sleeve, a clamp, and an air guard ring.

[0008] The air outlet end of the flexible sealing sleeve is fitted onto the left side wall of the air guard ring; the air collecting cover is provided with a connecting protrusion ring, the air inlet end of the flexible sealing sleeve is fitted onto the connecting protrusion ring, and the flexible sealing sleeve is locked onto the connecting protrusion ring by the clamp.

[0009] Preferably, the axial projection length of the wind shield in the flexible sealing sleeve is 40%-60% of the total length of the flexible sealing sleeve.

[0010] Preferably, the portion of the windproof ring inserted into the flexible sealing sleeve has an outer wall that gradually narrows from right to left.

[0011] Preferably, the outer side wall of the connecting protrusion ring is provided with a first snap-fit ​​portion, and the air inlet end of the flexible sealing sleeve is provided with a groove and a second snap-fit ​​portion that snaps into the first snap-fit ​​portion;

[0012] The air inlet end of the flexible sealing sleeve is fitted onto the outer side wall of the connecting protrusion ring, so that the first snap-fit ​​part snaps into the second snap-fit ​​part to restrict left and right movement, while the clamp is installed in the groove so that the flexible sealing sleeve and the connecting protrusion ring are tightly connected to restrict radial movement.

[0013] More preferably, the first snap-fit ​​portion includes a first protruding ring protruding outward from the outer side wall of the connecting protruding ring; the second snap-fit ​​portion includes a first snap-fit ​​cavity connected to the left side of the groove, the opening of the first snap-fit ​​cavity facing the first protruding ring, so that the first protruding ring can be snapped into the first snap-fit ​​cavity to restrict the left and right movement of the flexible sealing sleeve and the air collecting cover.

[0014] More preferably, the right wall of the first snap-fit ​​cavity is the left wall of the groove, so that the first snap-fit ​​cavity restricts the clamp from moving to the left.

[0015] More preferably, the left cavity wall of the first snap-fit ​​cavity is further bent and connected with a left extension extending to the left, the left extension being close to the outer wall of the connecting protrusion.

[0016] More preferably, the first snap-fit ​​portion further includes an outer extension extending outward from the right end of the outer side wall of the connecting protrusion ring; the second snap-fit ​​portion further includes a second snap-fit ​​cavity connected to the right side of the groove, the opening of the second snap-fit ​​cavity facing the outer extension, so that the outer extension can be snapped into the second snap-fit ​​cavity to restrict the left and right movement of the flexible sealing sleeve and the air collecting cover.

[0017] More preferably, the left wall of the second snap-fit ​​cavity is the right wall of the groove, so that the second snap-fit ​​cavity restricts the clamp from moving to the right.

[0018] More preferably, the right cavity wall of the second snap-fit ​​cavity extends inward to fit the right end face of the outer wall of the connecting protrusion; the air outlet end of the flexible sealing sleeve is bent and connected to the right cavity wall of the second snap-fit ​​cavity.

[0019] Preferably, the connecting protrusion ring is further provided with an inner sidewall that connects to its outer sidewall, and a reinforcing rib is connected between the inner sidewall and the outer sidewall.

[0020] Preferably, the clamp is a steel annular clamp; the flexible sealing sleeve is an integral connection structure, and the flexible sealing sleeve is a rubber sleeve.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] This utility model's cooling fan uses a flexible connection structure. The air inlet end of the flexible sealing sleeve is fitted onto the outer wall of the connecting protrusion of the air collector shroud, and the flexible sealing sleeve is locked onto the connecting protrusion by a clamp. Thus, through the combined action of the connecting protrusion, the flexible sealing sleeve, and the clamp, even if the length of the connecting protrusion of the air collector shroud is short, a more stable and secure sealing connection between the connecting protrusion and the flexible sealing sleeve can be ensured. This effectively prevents the air collector shroud from detaching from the flexible sealing sleeve due to vibration or shaking, thereby effectively preventing air leakage and improving heat dissipation. Furthermore, this utility model simplifies the structure of the air guard ring. Since the air guard ring is connected to the engine, the resonance noise problem caused by clamps on the air guard ring is avoided. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a flexible connection structure for a cooling fan according to this embodiment.

[0024] Figure 2 This is an exploded view of a flexible connection structure for a cooling fan according to this embodiment.

[0025] Figure 3 This is a cross-sectional schematic diagram of a flexible connection structure for a cooling fan according to this embodiment.

[0026] Figure 4 for Figure 3 Enlarged view of section A (labeled A).

[0027] Figure 5 This is a schematic diagram of the installation structure of a flexible connection structure for a cooling fan according to this embodiment.

[0028] Reference numerals: 1. Air collector cover; 11. Connecting protrusion ring; 12. First snap-fit ​​part; 121. First protrusion ring; 122. Outer extension edge; 13. Inner side wall; 14. Reinforcing rib; 2. Flexible sealing sleeve; 21. Groove; 22. Second snap-fit ​​part; 221. First snap-fit ​​cavity; 222. Second snap-fit ​​cavity; 23. Left extension edge; 3. Clamp; 4. Air guard ring; 5. Radiator; 6. Fan. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example

[0031] This embodiment provides a flexible connection structure for a cooling fan; see [link / reference]. Figure 1-2 This includes an air collector shroud 1, a flexible sealing sleeve 2, clamps 3, and an air guard ring 4. In practice, the air collector shroud 1 is installed on the radiator 5 (e.g., Figure 5 As shown, the fan 6 is mounted on the air shield 4, and both the air shield 4 and the fan 6 are connected to the engine; thus, the air passes through the radiator 5, the air collector 1, the flexible sealing sleeve 2 and the air shield 4 in sequence, and then gathers together, and is then cooled by the fan 6 to cool the engine compartment.

[0032] Among them, see Figure 2-5 The air outlet end of the flexible sealing sleeve 2 (i.e. Figure 4 The right end of the flexible sealing sleeve 2 shown is fitted onto the left side wall of the air guard ring 4.

[0033] Specifically, the axial projection length of the air shield 4 within the flexible sealing sleeve 2 is preferably 40%-60% (preferably 55%) of the total length of the flexible sealing sleeve 2. Because the left end of the air shield 4 has a relatively long sidewall for the right end of the flexible sealing sleeve 2 to fit over it, the flexible sealing sleeve 2 and the air shield 4 can achieve a good sealing fit. In actual use, the flexible sealing sleeve 2 and the air shield 4 are not easily separated, preventing air leakage between them and ensuring excellent heat dissipation.

[0034] Furthermore, the portion of the windproof ring 4 that inserts into the flexible sealing sleeve 2 has an outer wall that gradually narrows from right to left (e.g., Figure 5 (As shown). Thus, when the air outlet of the flexible sealing sleeve 2 is a straight cylindrical structure, the air outlet of the flexible sealing sleeve 2 is easy to install, and the inner wall of the flexible sealing sleeve 2 fits well with the air guard ring 4, ensuring the sealing performance.

[0035] In practice, the side wall length of the flexible sealing sleeve 2 on the right end of the air collecting hood 1 is relatively short. Therefore, to prevent the air collecting hood 1 and the flexible sealing sleeve 2 from detaching and leaking air during actual use, this embodiment makes the following improvements to the air collecting hood 1 and the flexible sealing sleeve 2:

[0036] The right end of the air collecting hood 1 is provided with a connecting protrusion 11 (such as...). Figure 2 , 4 As shown), the air inlet end of the flexible sealing sleeve 2 (i.e. Figure 4 The left end of the flexible sealing sleeve 2 shown is fitted onto the connecting protrusion ring 11, and the flexible sealing sleeve 2 is locked onto the connecting protrusion ring 11 by the clamp 3.

[0037] Specifically, a first snap-fit ​​portion 12 is provided on the outer side wall of the connecting protruding ring 11 (e.g., Figure 4-5 As shown), and a groove 21 is provided at the left end of the flexible sealing sleeve 2 (as shown). Figure 5 (As shown) and the second snap-fit ​​portion 22, which can engage with the first snap-fit ​​portion 12. In this way, the left end of the flexible sealing sleeve 2 is fitted onto the outer wall of the connecting protrusion ring 11, so that the first snap-fit ​​portion 12 can be snapped into the second snap-fit ​​portion 22 to restrict the left and right movement of the flexible sealing sleeve 2 and the air collecting hood 1, and the clamp 3 is installed in the groove 21 so that the flexible sealing sleeve 2 and the connecting protrusion ring 11 are tightly connected to restrict the radial movement of the flexible sealing sleeve 2 and the air collecting hood 1.

[0038] Thus, through the combined action of the first snap-fit ​​portion 12 of the connecting convex ring 11, the second snap-fit ​​portion 22 and groove 21 of the flexible sealing sleeve 2, and the clamp 3, even if the length of the connecting convex ring 11 of the air collector shroud 1 is relatively short, a more stable and secure sealing connection between the connecting convex ring 11 and the flexible sealing sleeve 2 can be ensured. This effectively prevents the air collector shroud 1 from detaching from the flexible sealing sleeve 2 due to vibration or shaking, thereby effectively preventing air leakage and improving heat dissipation. Moreover, it simplifies the structure of the air guard ring 4. Since the air guard ring 4 is connected to the engine, the resonance noise problem caused by the clamp on the air guard ring is avoided.

[0039] In practice, the clamp 3 is preferably a steel annular clamp 3, so as to better achieve a tight connection between the flexible sealing sleeve 2 and the connecting convex ring 11.

[0040] Specifically, see Figure 4-5 The first engaging portion 12 includes a first protruding ring 121 protruding outward from the outer side wall of the connecting protruding ring 11 (e.g., Figure 5 (as shown); correspondingly, the second snap-fit ​​portion 22 includes a first snap-fit ​​cavity 221 connected to the left side of the groove 21 (as shown). Figure 5 As shown), the opening of the first snap-fit ​​cavity 221 faces the first protruding ring 121. In this way, the first protruding ring 121 can be snapped into the first snap-fit ​​cavity 221 to restrict the left and right movement of the flexible sealing sleeve 2 and the air collecting cover 1.

[0041] Further, see Figure 4-5 The first snap-fit ​​portion 12 also includes an extension edge 122 extending outward from the right end of the outer side wall of the connecting protrusion ring 11 (e.g., ...). Figure 5 (as shown); correspondingly, the second snap-fit ​​portion 22 also includes a second snap-fit ​​cavity 222 connected to the right side of the groove 21 (as shown). Figure 5 As shown), the opening of the second snap-fit ​​cavity 222 faces the outer extension 122. In this way, the outer extension 122 can be snapped into the second snap-fit ​​cavity 222 to further strengthen the restriction on the left and right movement of the flexible sealing sleeve 2 and the air collecting cover 1.

[0042] Furthermore, the right wall of the first locking cavity 221 is directly used as the left wall of the groove 21. This simplifies the structure of the first locking cavity 221 and the groove 21, reducing manufacturing and material costs, while also allowing the first locking cavity 221 to restrict the clamp 3 from moving to the left. Similarly, the left wall of the second locking cavity 222 is directly used as the right wall of the groove 21. This simplifies the structure of the second locking cavity 222 and the groove 21, reducing manufacturing and material costs, while also allowing the second locking cavity 222 to restrict the clamp 3 from moving to the right.

[0043] In addition, see Figure 4 The connecting ring 11 is also provided with an inner sidewall 13 that connects to its outer sidewall. A reinforcing rib 14 is also connected between the inner sidewall 13 and the outer sidewall to enhance the mechanical properties of the connecting ring 11.

[0044] See Figure 5 To enhance the sealing connection between the connecting convex ring 11 and the flexible sealing sleeve 2, the left cavity wall of the first snap-fit ​​cavity 221 is also bent and connected with a left extension edge 23 extending to the left (e.g., Figure 5 As shown), the left extension 23 is close to the outer wall of the connecting protrusion 11.

[0045] Moreover, see Figure 4-5 The right wall of the second snap-fit ​​cavity 222 extends inward to fit the right end face of the outer wall of the connecting protrusion 11, thereby further enhancing the sealing fit between the connecting protrusion 11 and the flexible sealing sleeve 2. The right end of the flexible sealing sleeve 2 is bent and connected to the right wall of the second snap-fit ​​cavity 222 so that the inner wall of the flexible sealing sleeve 2 and the air guard ring 4 can achieve a sealed fit.

[0046] In practice, the flexible sealing sleeve 2 is preferably an integral connection structure, and the flexible sealing sleeve 2 is preferably a rubber sleeve. Of course, in other examples, the flexible sealing sleeve 2 can also be made of other materials with flexibility and sealing properties.

[0047] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0048] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A flexible connection structure for a cooling fan, characterized in that, Includes air collection hood, flexible sealing sleeve, clamps and air guard ring; The air outlet end of the flexible sealing sleeve is fitted onto the left side wall of the air guard ring; the air collecting cover is provided with a connecting protrusion ring, the air inlet end of the flexible sealing sleeve is fitted onto the connecting protrusion ring, and the flexible sealing sleeve is locked onto the connecting protrusion ring by the clamp.

2. The flexible connection structure for a heat dissipating fan according to claim 1, wherein The axial projection length of the wind shield in the flexible sealing sleeve is 40%-60% of the total length of the flexible sealing sleeve.

3. The flexible connection structure for a heat dissipating fan according to claim 1, wherein The portion of the windproof ring inserted into the flexible sealing sleeve has an outer wall that gradually narrows from right to left.

4. The flexible connection structure for a heat dissipating fan according to claim 1, wherein The outer side wall of the connecting protrusion ring is provided with a first snap-fit ​​part, and the air inlet end of the flexible sealing sleeve is provided with a groove and a second snap-fit ​​part that snaps into the first snap-fit ​​part; The air inlet end of the flexible sealing sleeve is fitted onto the outer side wall of the connecting protrusion ring, so that the first snap-fit ​​part snaps into the second snap-fit ​​part to restrict left and right movement, while the clamp is installed in the groove so that the flexible sealing sleeve and the connecting protrusion ring are tightly connected to restrict radial movement.

5. The flexible connection structure for a heat dissipating fan according to claim 4, wherein The first snap-fit ​​portion includes a first protruding ring that protrudes outward from the outer side wall of the connecting protruding ring; the second snap-fit ​​portion includes a first snap-fit ​​cavity connected to the left side of the groove, the opening of the first snap-fit ​​cavity facing the first protruding ring, so that the first protruding ring can be snapped into the first snap-fit ​​cavity to restrict the left and right movement of the flexible sealing sleeve and the air collecting cover.

6. The flexible connection structure for a heat dissipating fan according to claim 5, wherein The right wall of the first snap-fit ​​cavity is the left wall of the groove, so that the first snap-fit ​​cavity restricts the clamp from moving to the left.

7. The flexible connection structure for a heat dissipating fan according to claim 5, wherein The left cavity wall of the first snap-fit ​​cavity is also bent and connected to a left extension that extends to the left, and the left extension is close to the outer wall of the connecting protrusion.

8. The flexible connection structure for a heat dissipating fan according to claim 4, wherein The first snap-fit ​​portion further includes an outer extension extending outward from the right end of the outer side wall of the connecting protrusion ring; the second snap-fit ​​portion further includes a second snap-fit ​​cavity connected to the right side of the groove, the opening of the second snap-fit ​​cavity facing the outer extension, so that the outer extension can be snapped into the second snap-fit ​​cavity to restrict the left and right movement of the flexible sealing sleeve and the air collecting cover.

9. The flexible connection structure for a heat dissipating fan according to claim 8, wherein The left wall of the second snap-fit ​​cavity is the right wall of the groove, so that the second snap-fit ​​cavity restricts the clamp from moving to the right.

10. A flexible connection structure for a cooling fan according to claim 8, characterized in that, The right wall of the second snap-fit ​​cavity extends inward to fit the right end face of the outer wall of the connecting protrusion; the air outlet end of the flexible sealing sleeve is bent and connected to the right wall of the second snap-fit ​​cavity.

11. The flexible connection structure for a cooling fan according to claim 1, characterized in that, The connecting protruding ring is also provided with an inner sidewall that connects to its outer sidewall, and a reinforcing rib is connected between the inner sidewall and the outer sidewall.

12. The flexible connection structure for a cooling fan according to claim 1, characterized in that, The clamp is a steel ring clamp; the flexible sealing sleeve is an integral connection structure, and the flexible sealing sleeve is a rubber sleeve.

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