Assembly structure for shroud and fan

Abstract

The utility model relates to the technical field of vehicle cooling fans, and discloses an assembly structure for a shroud ring and a fan, which comprises the shroud ring, the fan and a plurality of positioning buckles, a first outer ring and a second outer ring are arranged on the outer sides of the air protection ring and the fan respectively, and the second outer ring is located on the inner side of the first outer ring; a clamping groove and an abutting part are arranged on the positioning buckle; a plurality of buckle inserting parts are evenly arranged on the first outer ring in the circumferential direction, the clamping grooves are matched with the positions, at the buckle inserting parts, of the first outer ring in an inserting mode, and the abutting parts on the multiple positioning buckles abut against the second outer ring. According to the assembly structure, the fan shroud and the fan can be concentrically assembled, the concentricity is controllable, errors are extremely small, the risks of scraping and collision do not exist, noise can be reduced, the heat dissipation effect is improved, the structure of the positioning buckle is simpler, design is more reasonable, and the raw material cost and the production cost of the positioning buckle can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle heat dissipation fan technical field, concretely relates to a wind -guard ring and fan assembly structure. BACKGROUND

[0002] As Figure 1 shown, in the traditional automobile cooling system, the wind passes through the radiator and the wind collecting cover 4 in turn, and then is collected together, and then is cooled by the fan 3 for the cabin. The wind collecting cover 4 is fixed on the vehicle body at the same time with the radiator, and the fan 3 is connected with the engine; when running, the wind collecting cover 4, the fan 3 and the like have certain amplitude, and in order to prevent the collision between the fan 3 and the wind collecting cover 4 during driving, the gap required for the relative movement of the wind collecting cover 4 and the fan 3 needs to be left. In practice, the gap for safe movement between the wind collecting cover 4 and the fan 3 needs to be ensured, and the gap cannot be too large. As Figure 1 shown, the gap D between the traditional wind collecting cover 4 and the fan 3 after cooperation is generally kept at 25-30mm, the gap is relatively large, which will lead to the difficulty in aligning the center of the wind collecting cover 4 with the center of the fan 3, thereby leading to the difficulty in keeping the concentric installation of the wind collecting cover 4 and the fan 3, so as to reduce the heat dissipation effect, and bring problems such as large noise and the like.

[0003] Based on this, the prior art, such as the one shown in the publication numbers CN214742369U and CN113217473B, provides a center positioning tool for assembling the wind guard ring and the heat dissipation fan with guide vanes, which comprises a base, at least one clamping groove and at least one elastic arm are arranged on the base, the clamping groove is used for clamping with the inner ring edge of the wind guard ring, and the movable end of the elastic arm is used for abutting against the inner wall of the outer ring in the heat dissipation fan; the opening end of the clamping groove and the movable end of the elastic arm are located on the same side of the base. The center positioning tool can realize the precise alignment of the center of the wind guard ring and the center of the heat dissipation fan (that is, realize the concentric alignment and assembly of the wind guard ring and the heat dissipation fan), so as to avoid the uneven gap between the outer peripheral edges of the two components, thereby avoiding the scratching and abnormal sound between the two components, and improving the service life of the two components.

[0004] However, the existing center positioning tool needs to set a cuboid-shaped base and additionally add auxiliary supporting blocks and the like, so that the center positioning tool has defects of complex structure, high raw material cost and high production cost; moreover, the clamping grooves, elastic arms and auxiliary supporting blocks are arranged along the length direction of the cuboid-shaped base at intervals, and the number of the clamping grooves and the elastic arms is two, which all lead to the base needing to have a long enough length, so that the structure of the center positioning tool is more complex, and the raw material cost and the production cost are further increased, and the structure design is very unreasonable; in addition, the randomness of the installation angle and the installation position of the adjacent two center positioning tools when being installed on the inner ring edge of the wind guard ring is large, and the assembly is based on the experience of workers, so that the problem of the wind guard ring and the fan being different in center is easily caused. Utility model content

[0005] The utility model discloses a kind of assembly structures for wind guard ring and fan, which are used to overcome the defects of the prior art.

[0006] Based on this, the utility model discloses a kind of assembly structures for wind guard ring and fan, including wind guard ring, fan and multiple positioning buckles;The outer side of the wind guard ring and fan is respectively equipped with first outer ring and second outer ring, and second outer ring is located at the inner side of first outer ring;Clamping groove and abutment portion are equipped on the positioning buckle;First outer ring is uniformly equipped with multiple buckle insertion parts on the first outer ring along the circumference, and first outer ring insertion fits in the place of clamping groove and buckle insertion part, and the abutment portion on multiple positioning buckles all abuts against second outer ring.

[0007] Preferably, the first outer ring includes a cylindrical portion and an annular flared portion provided at one end of the cylindrical portion, a plurality of openings are uniformly provided on the annular flared portion along the circumferential direction, the openings are the buckle insertion parts, and the clamping groove is inserted and fitted with the cylindrical portion at the opening.

[0008] Preferably, a limiting block is provided on the side surface of the first outer ring, and a step portion that abuts against the limiting block is provided in the groove wall of the clamping groove; and / or, a step portion is provided on the side surface of the first outer ring, and a limiting block that abuts against the step portion is provided in the groove wall of the clamping groove.

[0009] Further preferably, after the limiting block and the step portion abut against each other, a gap is formed between the end surface of the first outer ring and the inner top surface of the clamping groove.

[0010] Further preferably, the clamping groove includes a first groove wall and a second groove wall, the first groove wall and the second groove wall respectively contact the outer side surface and the inner side surface of the first outer ring, one end of the first groove wall and the second groove wall is connected to each other to form a closed end, and the other end of the first groove wall and the second groove wall is separated to form a slot of the clamping groove.

[0011] The limiting block protrudes outward along the outer side surface of the first outer ring, and the step portion is provided in the first groove wall of the clamping groove.

[0012] Further preferably, a spacing is provided between the second slot wall and the abutting portion, so that a safety gap is formed between the first outer ring and the second outer ring.

[0013] The safety gap between the first outer ring and the second outer ring is controlled to be 8-10mm.

[0014] Further preferably, the abutting portion is provided with an arc-shaped wall, which abuts with the outer side surface of the second outer ring, and the arc-shaped wall and one end of the second slot wall are connected to each other to form a closed end.

[0015] Further preferably, the abutting portion is further provided with an extension wall connected with the arc-shaped wall, which extends towards the outside of the closed end of the arc-shaped wall, so that after the extension wall abuts with the outer side surface of the second outer ring, it extends out of the edge of the second outer ring.

[0016] Further preferably, the length of the arc-shaped wall is less than the length of the second slot wall.

[0017] Further preferably, the number of the buckle insertion portions is three, and the number of the buckle insertion portions is the same as the number of the positioning buckles.

[0018] Compared with the prior art, the utility model at least has the following beneficial effects:

[0019] The assembly structure of the utility model, through the cooperation of the wind guard ring, the fan and the plurality of positioning buckles, the clamping grooves of the plurality of positioning buckles can be inserted and matched with the first outer ring at the buckle insertion portion of the corresponding position of the wind guard ring, and the abutting portion of the plurality of positioning buckles can be abutted and matched with the second outer ring of the fan, so that the center of the first outer ring and the center of the second outer ring can be positioned and aligned, so that the wind guard ring and the fan can be assembled to the engine after keeping concentric, the concentricity is controllable, guaranteed and with minimal error, so that better gap cooperation between the wind guard ring and the fan is realized, so as to avoid scraping and collision of the wind guard ring and the fan, thereby reducing noise and ensuring the realization of the heat dissipation effect.

[0020] Moreover, the positioning buckle does not need to add auxiliary supporting blocks and rectangular base structures like the center positioning tool of CN214742369U, so that the structure of the positioning buckle is simpler, the design is more reasonable, and the raw material cost and production cost of the positioning buckle can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the gap cooperation between the traditional wind collector and the fan.

[0022] Figure 2 It is a structure schematic view of the assembly structure of the wind guard ring and the fan of the embodiment.

[0023] Figure 3 A perspective view of the positioning buckle of the present embodiment.

[0024] Figure 4 A cross-sectional view of the assembly structure of the wind guard and the fan of the present embodiment.

[0025] Figure 5 A perspective view of Figure 4 An enlarged view of reference numeral A.

[0026] Figure 6 A structure view of the gap fit between the wind guard and the fan of the present embodiment.

[0027] BRIEF DESCRIPTION OF DRAWINGS Positioning buckle 1; clamping groove 11; stepped portion 111; first groove wall 112; second groove wall 113; spacing 12; abutting portion 13; extension wall 131; arc-shaped wall 132; wind guard 2; first outer ring 21; cylindrical portion 211; annular flared portion 212; buckle insertion portion 22; limiting block 23; fan 3; second outer ring 31; air collector 4; gap 5. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, comprehensible and easily understood, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0029] EMBODIMENT

[0030] The assembly structure of the wind guard and the fan of the present embodiment, referring to Figure 2 , comprises a wind guard 2, a fan 3 and a plurality of positioning buckles 1. The outer side of the wind guard 2 is provided with a first outer ring 21, the outer side of the fan 3 is provided with a second outer ring 31, and the second outer ring 31 is located inside the first outer ring 21.

[0031] In the actual assembly process, the positioning buckles 1 are needed to position and align the center of the first outer ring 21 with the center of the second outer ring 31, so that the wind guard 2 and the fan 3 are kept concentric, and then the wind guard 2 and the fan 3 are installed on the engine to realize the heat dissipation effect.

[0032] Referring to Figures 2-3 , the positioning buckle 1 is provided with a clamping groove 11 and an abutting portion 13 connected in sequence (as shown in Figure 3 ).

[0033] Among them, the first outer ring 21 is uniformly provided with a plurality of buckle insertion portions 22 (as shown in Figure 2 , 5The card slot 11 is located on the side of the first outer ring 21, and the notch of the card slot 11 faces the first outer ring 21 at the buckle insertion part 22, so that the first outer ring 21 at the buckle insertion part 22 is inserted into the notch of the card slot 11 to be inserted and matched with the card slot 11. In this way, the positioning buckle 1 can be fixed on the outer side of the wind guard ring 2 through the insertion and matching of the card slot 11 and the first outer ring 21 at the buckle insertion part 22.

[0034] Specifically, referring to Figures 2-6 , the first outer ring 21 includes a cylindrical portion 211 (as shown in Figure 5 , 6 ) and an annular flared portion 212 (as shown in Figure 5 , 6 ) provided at one end of the cylindrical portion 211. A plurality of openings are uniformly provided on the annular flared portion 212 in the circumferential direction, and the openings are the buckle insertion parts 22, so that the card slot 11 can be inserted and matched with the cylindrical portion 211 at the openings. In this way, the openings can better position and limit the insertion and matching of the card slot 11 and the first outer ring 21, thereby effectively avoiding the problem that the wind guard ring 2 is easily out of concentricity with the fan 3 due to the randomness of the installation angle and position of the existing center positioning tool on the inner edge of the wind guard ring 2, and thus helping to improve the positioning and concentricity accuracy of the positioning buckle 1.

[0035] The number of buckle insertion parts 22 is preferably three, and the number of buckle insertion parts 22 is the same as the number of positioning buckles 1. Therefore, by limiting the number of buckle insertion parts 22 and positioning buckles 1, and the specific positions of the three buckle insertion parts 22 (i.e. openings), the insertion and matching of the card slot 11 and the first outer ring 21 can be more stable and reliable, thereby helping to improve the positioning and concentricity accuracy of the positioning buckle 1, making the concentricity controllable, guaranteed and with minimal error.

[0036] Specifically, the card slot 11 includes a first slot wall 112 and a second slot wall 113 (as shown in Figure 3 , 5 ). One end of the first slot wall 112 is connected to one end of the second slot wall 113 to form a closed end, and the other end of the first slot wall 112 is separated from the other end of the second slot wall 113 to form a notch of the card slot 11.

[0037] In use, after the notch of the card slot 11 is inserted into the first outer ring 21 from the buckle insertion part 22, the first slot wall 112 of the card slot 11 contacts the outer side of the first outer ring 21, and the second slot wall 113 of the card slot 11 contacts the inner side of the first outer ring 21; in this way, the insertion and matching of the card slot 11 and the first outer ring 21 is achieved.

[0038] Further, the side surface of the first outer ring 21 is provided with a limiting block 23 (as shown in Figure 5As shown), the groove wall of the slot 11 is provided with a stepped portion 111 that abuts against the limiting block 23 (as shown). Figure 3 , 5 (as shown); and / or, the side of the first outer ring 21 is provided with a stepped portion 111, and the groove wall of the slot 11 is provided with a limiting block 23 that abuts and cooperates with the stepped portion 111.

[0039] In one embodiment, the outer surface of the first outer ring 21 is provided with an outwardly protruding limiting block 23, and the first groove wall 112 of the slot 11 is provided with a stepped portion 111 that abuts against the limiting block 23. Thus, based on the insertion and engagement of the first outer ring 21 at the slot 11 and the buckle insertion portion 22, the abutting engagement of the limiting block 23 and the stepped portion 111 further enhances the stability and reliability of the insertion and engagement between the slot 11 and the first outer ring 21, thereby helping to further improve the positioning and concentric alignment accuracy of the positioning buckle 1.

[0040] Furthermore, after the limiting block 23 abuts against the step portion 111, there is a gap 5 between the end face of the first outer ring 21 and the top surface of the groove 11 (e.g., Figure 5 (As shown). After the air guard 2 and fan 3 are concentric and installed on the engine, this gap makes it easier to remove and separate the positioning clip 1 from the first outer ring 21.

[0041] The abutting part 13 is located on the side of the second outer ring 31 and abuts against the outer surface of the second outer ring 31. In this way, based on the fact that the slots 11 on the multiple positioning buckles 1 are engaged with the first outer ring 21, and the abutting part 13 on the multiple positioning buckles 1 is engaged with the second outer ring 31, the center of the first outer ring 21 and the center of the second outer ring 31 can be accurately positioned and aligned, so that the air shield 2 and the fan 3 are concentric before being assembled onto the engine.

[0042] Specifically, the abutment portion 13 is provided with an arc-shaped wall 132 (e.g., Figure 3 , 5 As shown, the arc-shaped wall 132 abuts against the outer surface of the second outer ring 31, and the arc-shaped wall 132 and the outer surface of the second outer ring 31 can achieve a better abutting fit.

[0043] The arc-shaped wall 132 and the second groove wall 113 are connected at one end to form a closed end. The abutment portion 13 is also provided with an extension wall 131 (such as an extension wall 131) connected to the arc-shaped wall 132. Figure 3 , 5As shown, the extension wall 131 extends outward toward the closed end of the arc-shaped wall 132, so that after the extension wall 131 abuts against the outer side of the second outer ring 31, it extends out to the edge of the second outer ring 31. In this way, through the joint cooperation of the arc-shaped wall 132 and the extension wall 131, the stability and reliability of the abutment part 13 and the second outer ring 31 can be improved, and it can abut against the fan 3 from both axial and radial directions, ensuring axial and radial accuracy, which helps to further improve the positioning and concentric alignment accuracy of the positioning buckle 1.

[0044] Preferably, the length of the arc-shaped wall 132 is less than the length of the second groove wall 113, which can reduce the production cost and raw material cost of the positioning buckle 1.

[0045] A gap 12 is provided between the second groove wall 113 and the abutment part 13 (e.g., ...). Figure 5 As shown), so that a safety gap d is formed between the first outer ring 21 and the second outer ring 31 (as shown). Figure 6 As shown), it can control the safety gap d between the first outer ring 21 and the second outer ring 31 to 8-10mm. Figure 1 As shown, the gap D between the traditional air collector shroud 4 and the fan 3 is generally maintained at 25-30mm. Therefore, the positioning buckle 1 in this embodiment can reduce the safety gap d, reduce the difficulty of aligning the center of the first outer ring 21 with the center of the second outer ring 31, achieve the gap fit between the air collector ring 2 and the fan 3, and ensure that the air collector ring 2 and the fan 3 are always concentrically assembled, so as to avoid scratching or collision between the air collector ring 2 and the fan 3. Without the risk of scratching or collision, noise can be reduced and heat dissipation can be improved.

[0046] Moreover, the positioning buckle 1 in this embodiment does not require the addition of auxiliary support blocks and cuboid-shaped bases, as is the case with the center positioning tool in CN214742369U. Therefore, the structure of the positioning buckle 1 is simpler, the design is more reasonable, and it can also reduce the raw material cost and production cost of the positioning buckle 1.

[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. An assembly structure for a wind guard and a fan, comprising a wind guard, a fan, and multiple positioning clips; wherein a first outer ring and a second outer ring are respectively provided on the outer sides of the wind guard and the fan, and the second outer ring is located inside the first outer ring; characterized in that, The positioning buckle is provided with a slot and an abutment part; multiple buckle insertion parts are evenly provided along the circumferential direction on the first outer ring, the slot and the first outer ring at the buckle insertion part are inserted and matched, and the abutment parts on the multiple positioning buckles all abut against the second outer ring.

2. The assembly structure for a windshield and a fan according to claim 1, characterized in that, The first outer ring includes a cylindrical part and an annular flared part at one end of the cylindrical part. Multiple notches are evenly opened along the circumferential direction on the annular flared part. The notches are the snap-fit ​​parts, and the slots are inserted into the cylindrical part at the notches.

3. The assembly structure for a windshield and a fan according to claim 1, characterized in that, The first outer ring has a limiting block on its side, and the groove wall of the slot has a stepped portion that abuts against the limiting block; and / or, the first outer ring has a stepped portion on its side, and the groove wall of the slot has a limiting block that abuts against the stepped portion.

4. The assembly structure for a windshield and a fan according to claim 3, characterized in that, After the limiting block and the step portion abut and engage, there is a gap between the end face of the first outer ring and the top surface of the slot.

5. The assembly structure for a windshield and a fan according to claim 3, characterized in that, The slot includes a first slot wall and a second slot wall, which respectively contact the outer side and inner side of the first outer ring; one end of the first slot wall and the second slot wall are connected to each other to form a closed end, while the other end of the first slot wall and the second slot wall are separated to form the slot opening. The limiting block protrudes outward along the outer side of the first outer ring, and the stepped portion is located within the first groove wall of the slot.

6. The assembly structure for a windshield and a fan according to claim 5, characterized in that, A gap is provided between the second groove wall and the abutment portion to form a safe gap between the first outer ring and the second outer ring; The safety gap between the first outer ring and the second outer ring is controlled at 8-10mm.

7. The assembly structure for a windshield and a fan according to claim 5, characterized in that, The abutting part is provided with an arc-shaped wall, which abuts against the outer side of the second outer ring, and one end of the arc-shaped wall and the second groove wall are connected to each other to form a closed end.

8. The assembly structure for a windshield and a fan according to claim 7, characterized in that, The abutting part is also provided with an extension wall connected to the arc-shaped wall. The extension wall extends outward toward the closed end of the arc-shaped wall so that after the extension wall abuts the outer side of the second outer ring, it extends out of the edge of the second outer ring.

9. The assembly structure for a windshield and a fan according to claim 7, characterized in that, The length of the arc-shaped wall is less than the length of the second groove wall.

10. The assembly structure for a windshield and a fan according to claim 1, characterized in that, The number of the buckle insertion parts is three, and the number of buckle insertion parts is the same as the number of positioning buckles.

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