Cooling fan of automobile engine

Abstract

The utility model relates to the field of fans, and discloses an automobile engine cooling fan which comprises a rotating disc and a plurality of fan blades installed on the rotating disc through detachable structures. The detachable structure comprises inserting grooves and inserting blocks, wherein the inserting grooves are circumferentially formed in the outer wall of the rotating disc, the number of the inserting grooves is the same as that of the fan blades, one ends of the inserting grooves are open, and the tops of the inserting blocks are fixed to the fan blades. An anti-disengaging part used for preventing the inserting block from disengaging from the inserting groove and an unlocking part used for releasing limiting of the anti-disengaging part to the inserting block are arranged in the inserting groove. The limiting groove is formed in the bottom of the inserting-connecting block, the limiting block is arranged in the inserting-connecting groove in a telescopic mode and can be partially inserted into the limiting groove, the containing groove is formed in the inserting-connecting groove and used for containing the retracted limiting block, and a telescopic component used for driving the limiting block to stretch out and draw back is arranged between the containing groove and the limiting block. According to the mechanism, the extension and retraction of the limiting block are controlled through the extension component to limit the insertion block, so that the installation between the fan blades and the turntable is realized.

Description

Technical Field

[0001] The utility model relates to the field of fans, in particular to a cooling fan for an automobile engine. Background Art

[0002] The automobile engine is the machine that provides power for the car and is the heart of the car. It affects the car's power, economy and environmental protection. The cooling fan is an important component in the engine. Its function is to dissipate heat from the engine when it is running.

[0003] A Chinese patent with announcement number CN217055683U discloses a cooling fan and an engine, including a hub and fan blades, wherein the hub includes a hub body with an annular structure and a fin plate with one end connected to the hub body and the other end extending away from the hub body, wherein the fan blades are detachably connected to the fin plate, and reinforcing ribs with a regular hexagonal honeycomb structure are provided on the fin plate, and a plurality of mounting holes are provided on the fin plate, wherein the fan blades are detachably connected to the fin plate by rivets or bolts cooperating with the mounting holes.

[0004] The fan blades in the above structure can be inserted into the mounting holes on the fin plate by means of multiple bolts or rivets, so as to realize the installation between the fan blades and the fin plate, and the reinforcing ribs of the regular hexagonal honeycomb structure arranged on the fin plate can improve the stiffness and strength of the fin plate, so that the fin plate has higher deformation resistance. However, in the process of installing the fan blades to the fin plate, multiple bolts or rivets are required to realize the connection between a single fan blade and the fin plate, and then it is necessary to repeat the steps to install other fan blades on the fin plate to complete the installation between multiple fan blades and the fin plate, which leads to low installation efficiency of the fan blades. Utility Model Content

[0005] The utility model provides an automobile engine cooling fan to solve the problem that the installation between a single fan blade and a fin plate in the prior art requires the use of multiple bolts or rivets, while there are multiple fan blades in the fan, resulting in low installation efficiency during the installation process between the multiple fan blades and the fin plates.

[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] A car engine cooling fan comprises a turntable and a plurality of fan blades, wherein the plurality of fan blades are respectively mounted on the turntable through a detachable structure, wherein the detachable structure comprises a plug-in slot which is circumferentially arranged on the outer wall of the turntable and has an open end which is the same number as the fan blades, and a plug-in block which is embedded in the plug-in slot and is fixed to the fan blades at the top, wherein an anti-slip component for preventing the plug-in block inserted in the plug-in slot from slipping out of the plug-in slot and an unlocking component for releasing the limit of the plug-in block by the anti-slip component are arranged in the plug-in slot, wherein the anti-slip component comprises a limit slot arranged at the bottom of the plug-in block, a limit block which is telescopically arranged in the plug-in slot and can be partially inserted into the limit slot, and a receiving slot arranged in the plug-in slot for receiving the retracted limit block, and a telescopic component for driving the limit block to be telescopic is arranged between the receiving slot and the limit block.

[0008] By adopting the above scheme, the plug-in block arranged under the fan blade can be inserted into the plug-in slot on the turntable when the fan blade needs to be installed on the turntable. When the plug-in block is inserted into the plug-in slot, the telescopic component can be used to control the limit block to retract into the storage slot, so that the plug-in block can be inserted into the plug-in slot. When the limit slot on the plug-in block is exactly opposite to the position of the limit block in the plug-in slot, the telescopic component will drive the limit block to extend out of the storage slot and insert into the limit slot, thereby limiting the position of the plug-in block, realizing the installation between the fan blade and the turntable, thereby improving the efficiency of fan blade installation.

[0009] Preferably, the telescopic component includes a rebound component arranged between the bottom of the storage slot and the limit block for driving the limit block to partially extend out of the storage slot, and a retraction component arranged on the end of the limit block away from the bottom of the storage slot for driving the limit block to automatically retract into the storage slot when the plug-in block is inserted into the plug-in slot.

[0010] Preferably, the rebound component includes a spring arranged between the bottom surface of the receiving groove and the bottom surface of the limiting block.

[0011] By adopting the above scheme, the limit block can be partially extended out of the storage slot by the spring arranged between the bottom surface of the storage slot and the bottom surface of the limit block. At the same time, the spring can also drive the limit block to reset after the limit block retracts.

[0012] Preferably, the retractable component includes an inlet slope provided at one end of the limit block away from the bottom of the storage slot, and the inlet slope is inclined and enlarged from one end close to the opening of the plug-in slot toward one end away from the opening of the plug-in slot.

[0013] By adopting the above scheme, when the plug-in block is inserted into the plug-in slot, the plug-in block will gradually abut against the guide slope on the surface of the limit block. At this time, the plug-in block will exert pressure on the guide slope on the limit block, thereby pressing the limit block back into the receiving slot. At this time, the plug-in block can be inserted into the plug-in slot, and when the limit slot at the bottom of the plug-in block is directly opposite to the limit block in the receiving slot, the rebound component set at this time will drive the limit block to rebound partially and extend out of the receiving slot and insert into the limit slot, thereby preventing the plug-in block from falling out of the plug-in slot and realizing the installation between the fan blades and the turntable.

[0014] Preferably, the unlocking component includes a pulling rod arranged vertically downward on the bottom surface of the limit block and capable of driving the limit block to retract; a through groove for partially passing the pulling rod is arranged at the bottom of the storage groove; a concave hole which is interconnected with the through groove is also arranged on the turntable; the pulling rod passes through the through groove and is inserted into the concave hole; a limiting component for limiting the lifting and lowering of the pulling rod is arranged between the concave hole and the pulling rod passing through the through groove.

[0015] By adopting the above scheme, the setting of the pulling rod can drive the limit block to move downward when the fan blades need to be removed from the turntable, so that the limit block is disengaged from the limit groove at the bottom of the plug-in block. At this time, the plug-in block can be pulled out of the plug-in groove, thereby removing the fan blades from the turntable. The setting of the limit component can limit the lifting and lowering of the pulling rod, thereby reducing the probability of the pulling plate automatically descending when the fan is in use, causing the fan blades to fall from the turntable.

[0016] Preferably, the limiting component includes a latch, a through hole for the latch to pass through is provided at the position where the pulling rod extends out of the through slot, and a limiting hole for the latch to be partially inserted after passing through the through hole is provided on the concave hole.

[0017] By adopting the above scheme, the arranged pin is inserted through the through hole on the pulling rod into the limiting hole in the recessed hole, so that the pin limits the lifting and lowering of the pulling rod. Since the lifting and lowering of the pulling rod is limited, the limiting block inserted in the limiting groove at the bottom of the plug-in block cannot fall out of the limiting groove, thereby realizing the installation between the fan blades and the turntable.

[0018] Preferably, a blocking component is also provided on the turntable to prevent the latch from automatically falling out of the limiting hole.

[0019] Preferably, the blocking component includes a screw cap arranged in the recessed hole, an external thread is arranged on the surface of the screw cap, and an internal thread matching the external thread on the screw cap is arranged on the inner wall of the recessed hole, and when the screw cap is screwed into the recessed hole, one end of the pin close to the screw cap abuts against the screw cap.

[0020] By adopting the above scheme, the recessed hole can be closed by the provided screw cover, thereby improving the overall aesthetics of the fan; and when the screw cover is screwed into the recessed hole, its surface will abut against the surface of the pin inserted through the through hole into the limiting hole on the recessed hole, preventing the pin from falling out of the limiting hole, making it impossible for the pulling rod to be raised or lowered, thereby preventing the limiting block from falling out of the limiting groove at the bottom of the plug-in block, thereby achieving installation between the fan blades and the turntable.

[0021] The utility model has a significant technical effect due to the adoption of the above technical scheme: the plug-in block arranged under the fan blade can be inserted into the plug-in slot on the turntable when the fan blade needs to be installed on the turntable, and when the plug-in block is inserted into the plug-in slot, the telescopic component can be used to control the limit block to retract into the storage slot, so that the plug-in block can be inserted into the plug-in slot, and when the limit slot on the plug-in block is directly opposite to the position of the limit block in the plug-in slot, the telescopic component will drive the limit block to extend out of the storage slot and insert into the limit slot, thereby limiting the position of the plug-in block, realizing the installation between the fan blade and the turntable, thereby improving the efficiency of fan blade installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an axonometric view of a cooling fan of an automobile engine in this embodiment;

[0023] Figure 2 This is a disassembled diagram of the present embodiment when the cover is opened;

[0024] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0025] Figure 4 is a top view of a cooling fan of an automobile engine in this embodiment;

[0026] Figure 5 yes Figure 4 Sectional view at the middle BB;

[0027] Figure 6 yes Figure 5 Enlarged view of point C in the middle;

[0028] Figure 7 is an axonometric view of the turntable in this embodiment;

[0029] Figure 8 is an axonometric view of the pulling rod and the limit block in this embodiment;

[0030] Fig. 9 is an axonometric view of the fan blade and the plug-in block in this embodiment;

[0031] Fig.10 It is an axonometric view of the rotary cover in this embodiment.

[0032] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. turntable; 2. fan blades; 3. plug-in slot; 4. plug-in block; 5. limit slot; 6. limit block; 7. storage slot; 8. spring; 9. guide slope; 10. pulling rod; 11. through slot; 12. recessed hole; 13. latch; 14. through hole; 15. limit hole; 16. screw cover; 17. installation hole. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Example

[0035] A car engine cooling fan, reference Figure 1 , Figure 7-Figure 9 , including a turntable 1 and a plurality of fan blades 2, wherein the plurality of fan blades 2 are respectively mounted on the turntable 1 through a detachable structure, the detachable structure including a plug-in slot 3 with an open end which is the same number as the fan blades 2 and a plug-in block 4 which is embedded in the plug-in slot 3 and fixed to the fan blade 2 at the top, an anti-slip component for preventing the plug-in block 4 inserted in the plug-in slot 3 from slipping out of the plug-in slot 3 and an unlocking component for releasing the limit of the plug-in block 4 by the anti-slip component are arranged in the plug-in slot 3, the anti-slip component including a limit slot 5 arranged at the bottom of the plug-in block 4, a limit block 6 which is telescopically arranged in the plug-in slot 3 and can be partially inserted into the limit slot 5, and a receiving slot 7 arranged in the plug-in slot 3 for accommodating the retracted limit block 6, and a telescopic component for driving the limit block 6 to telescope is arranged between the receiving slot 7 and the limit block 6.

[0036] refer to Figure 2-Figure 9 The telescopic component includes a rebound component arranged between the bottom of the storage groove 7 and the limit block 6 for driving the limit block 6 to partially extend out of the storage groove 7, and a retraction component arranged on the end of the limit block 6 away from the bottom surface of the storage groove 7 for driving the limit block 6 to automatically retract into the storage groove 7 when the plug-in block 4 is inserted into the plug-in groove 3. The rebound component includes a spring 8 arranged between the bottom surface of the storage groove 7 and the bottom surface of the limit block 6. The retraction component includes an introduction slope 9 arranged at the end of the limit block 6 away from the bottom of the storage groove 7. The introduction slope 9 is inclined and enlarged from the end close to the opening of the plug-in groove 3 to the end away from the opening of the plug-in groove 3.

[0037] The unlocking component includes a pulling rod 10 which is arranged vertically downward on the bottom surface of the limit block 6 and can drive the limit block 6 to retract. A through groove 11 is arranged at the bottom of the storage groove 7 for the pulling rod 10 to partially pass through. In this embodiment, the spring 8 is sleeved outside the pulling rod 10, and a mounting hole 17 is also arranged at the bottom of the storage groove 7 for the spring 8 to be partially inserted. The through groove 11 is arranged in the middle of the mounting hole 17. A concave hole 12 which is mutually interpenetrating with the through groove 11 is also arranged on the turntable 1. The pulling rod 10 passes through the through groove 11 and is inserted into the concave hole 12. A limiting component for limiting the lifting and lowering of the pulling rod 10 is arranged between the concave hole 12 and the pulling rod 10 passing through the through groove 11. The limiting component includes a latch 13. A through hole 14 is arranged at the place where the pulling rod 10 extends out of the through groove 11 for the latch 13 to pass through. A limiting hole 15 is arranged on the concave hole 12 for the latch 13 to be partially inserted after passing through the through hole 14.

[0038] refer to Figure 1-Figure 2 , Fig.10 A blocking component for preventing the latch 13 from automatically falling out of the limiting hole 15 is also provided on the turntable 1. The blocking component includes a screw cap 16 arranged in the recessed hole 12. An external thread is arranged on the surface of the screw cap 16. An internal thread matching the external thread on the screw cap 16 is arranged on the inner wall of the recessed hole 12. When the screw cap 16 is screwed into the recessed hole 12, one end of the latch 13 close to the screw cap 16 abuts against the screw cap 16. In this embodiment, the outer wall of the screw cap 16 can also block the opening of the plug-in slot 3, thereby further reducing the probability of the plug-in block 4 falling out of the plug-in slot 3.

[0039] Specific disassembly and assembly process: when the fan blade 2 needs to be removed from the turntable 1, first, unscrew the rotary cover 16 from the concave hole 12, then pull the pin 13 inserted into the limiting hole 15 on the concave hole 12 out of the limiting hole 15, then pull the pull rod 10 downward, at this time the pull rod 10 will drive the limiting block 6 to move downward, so that the limiting block 6 is disengaged from the limiting groove 5 at the bottom of the plug-in block 4, and then the sliding plug-in block 4 can remove the fan blade 2 from the turntable. When the fan blade 2 needs to be installed on the turntable 1, the plug-in block 4 can be inserted into the plug-in slot 3 on the turntable 1. When the plug-in block 4 is inserted into the plug-in slot 3, the plug-in block 4 will gradually abut against the introduction slope 9 on the limit block 6. After that, the plug-in block 4 continues to be moved into the plug-in slot 3, and the plug-in block 4 will apply pressure to the introduction slope 9 on the limit block 6, thereby The limit block 6 is retracted into the storage groove 7 and the spring 8 arranged in the storage groove 7 is squeezed, causing the spring 8 to undergo elastic deformation. At this time, the plug-in block 4 can be smoothly inserted into the plug-in groove 3. When the limit groove 5 on the plug-in block 4 is directly opposite to the limit block 6 in the storage groove 7, the spring 8 arranged in the mounting hole 17 will restore and push the limit block 6 to partially extend out of the storage groove 7 and insert it into the limit groove 5 on the plug-in block 4. At this time, the plug-in block 4 will be limited in the plug-in groove 3, thereby realizing the installation between the fan blade 2 and the turntable 1. Afterwards, repeat the above steps to install the other fan blades 2 on the turntable 1, and then, insert the pin 13 through the through hole 14 on the pulling rod 10 into the limiting hole 15 on the recessed hole 12 in turn, so that the pin 13 limits the movement of the pulling rod 10. Finally, screw it back into the recessed hole 12 to complete the overall installation between the fan blade 2 and the turntable 1.

[0040] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A cooling fan for an automobile engine, comprising a turntable (1) and a plurality of fan blades (2), wherein the plurality of fan blades (2) are respectively mounted on the turntable (1) via a detachable structure, and characterized in that: The detachable structure comprises a plug-in slot (3) circumferentially arranged on the outer wall of the rotating disk (1) and having an opening at one end equal to the number of the fan blades (2), and a plug-in block (4) embedded in the plug-in slot (3) and fixed to the fan blade (2) at the top, wherein an anti-slipping component for preventing the plug-in block (4) inserted in the plug-in slot (3) from slipping out of the plug-in slot (3) and an unlocking component for releasing the stopper component from limiting the plug-in block (4), wherein the anti-slipping component comprises a limit slot (5) arranged at the bottom of the plug-in block (4), a limit block (6) telescopically arranged in the plug-in slot (3) and capable of being partially inserted into the limit slot (5), and a receiving slot (7) arranged in the plug-in slot (3) for receiving the retracted limit block (6), and a telescopic component for driving the limit block (6) to telescope is arranged between the receiving slot (7) and the limit block (6).

2. The automotive engine cooling fan according to claim 1, characterized in that: The telescopic component comprises a resilient component arranged between the bottom of the receiving groove (7) and the limiting block (6) for driving the limiting block (6) to partially extend out of the receiving groove (7), and a retracting component arranged on an end of the limiting block (6) away from the bottom surface of the receiving groove (7) for driving the limiting block (6) to automatically retract into the receiving groove (7) when the plug-in block (4) is inserted into the plug-in groove (3).

3. The automotive engine cooling fan according to claim 2, characterized in that: The resilient component comprises a spring (8) arranged between the bottom surface of the receiving groove (7) and the bottom surface of the limiting block (6).

4. The automotive engine cooling fan according to claim 2, characterized in that: The retractable component comprises an inlet bevel (9) arranged at one end of the limit block (6) away from the bottom of the storage groove (7), and the inlet bevel (9) is inclined and enlarged from one end close to the opening of the plug-in groove (3) to one end away from the opening of the plug-in groove (3).

5. The automotive engine cooling fan according to claim 3, characterized in that: The unlocking component comprises a pulling rod (10) arranged vertically downward on the bottom surface of the limiting block (6) and capable of driving the limiting block (6) to retract; a through groove (11) for partially passing the pulling rod (10) is arranged at the bottom of the storage groove (7); a concave hole (12) which is interpenetrating with the through groove (11) is also arranged on the rotating disk (1); the pulling rod (10) passes through the through groove (11) and is inserted into the concave hole (12); and a limiting component for limiting the lifting and lowering of the pulling rod (10) is arranged between the concave hole (12) and the pulling rod (10) passing through the through groove (11).

6. The automotive engine cooling fan according to claim 5, characterized in that: The limiting component comprises a latch (13), a through hole (14) for the latch (13) to pass through is provided at the position where the pulling rod (10) extends out of the through slot (11), and a limiting hole (15) is provided on the concave hole (12) for the latch (13) to be partially inserted after passing through the through hole (14).

7. The automotive engine cooling fan according to claim 6, characterized in that: A blocking component is also provided on the rotating disk (1) for preventing the latch pin (13) from automatically falling out of the limiting hole (15).

8. The automotive engine cooling fan according to claim 7, characterized in that: The blocking component comprises a screw cap (16) arranged in the concave hole (12), an external thread is arranged on the surface of the screw cap (16), and an internal thread matching the external thread on the screw cap (16) is arranged on the inner wall of the concave hole (12); when the screw cap (16) is screwed into the concave hole (12), one end of the latch (13) close to the screw cap (16) abuts against the screw cap (16).

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