An electric air outlet vane assembly

Abstract

This utility model relates to the field of ventilation equipment technology and discloses an electric air outlet fan blade accessory, aiming to solve the problem of inconvenient adjustment and maintenance of existing accessories. It includes slotted fan blades equidistantly installed inside the air outlet frame. The front end of the fan blade is engaged with a locking block I, and the rear end with a locking block II. The shafts I and II of locking block I both penetrate the air outlet frame and are rotatably connected to it. A locking block III is engaged inside the fan blade and located inside locking block II, and the two are connected by a connecting rod. A linkage plate is sleeved on the outside of each connecting rod to achieve fan blade linkage. A sector gear is fixed to the outside of the shaft II of one of the locking blocks II. Moving the sector gear drives a single fan blade to swing. Under the action of the linkage plate, all fan blades swing synchronously, realizing air outlet adjustment. The overall structure balances ease of adjustment with convenient assembly and maintenance, and is suitable for various electric air outlet scenarios.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation equipment technology, specifically relating to an electric air outlet fan blade accessory. Background Technology

[0002] In fields such as automotive air conditioning, residential fresh air systems, and industrial ventilation equipment, electric air outlets are core components for airflow control, and the structural design of their fan blade accessories directly affects airflow efficiency, adjustment accuracy, and service life. Currently, most mainstream electric air outlet fan blade accessories on the market adopt an integrated or bolt-fixed assembly structure. The connection between the fan blades and the drive components and frame relies on welding or multiple sets of fasteners to achieve the fan blade oscillation adjustment function.

[0003] The existing electric air outlet structure uses a motor to drive a single active fan blade to rotate, and then uses a gear set or linkage mechanism to transmit power to drive the other driven fan blades to swing synchronously, thereby achieving the adjustment of the air outlet angle. This type of structure has been used to some extent in small ventilation equipment.

[0004] However, existing electric air vent fan blade accessories have significant drawbacks in practical use. On the one hand, they are difficult to assemble and maintain. Since the fan blades, clips, and shafts are mostly integrated designs or bolted, when a single fan blade wears or deforms and needs to be replaced, the entire air vent frame and drive assembly must be disassembled. This is not only cumbersome but may also damage surrounding components during disassembly, leading to increased maintenance costs. At the same time, bolted connections are prone to loosening in long-term vibration environments (such as during vehicle operation), requiring regular checks and tightening, which increases the workload of later maintenance.

[0005] On the other hand, the synchronous adjustment of the fan blades has low precision and insufficient stability. In the existing structure, the power transmission between the active and driven fan blades relies on gear meshing or linkage hinges. The backlash between gears and the assembly error of the linkage can cause the multiple fan blades to swing asynchronously, resulting in problems such as some fan blades shifting and disordered airflow. In addition, traditional fan blades mostly adopt straight-edge or single arc-shaped structures, and the connection with the locking block is only through a single slot for positioning. During long-term swinging, radial or circumferential offset is prone to occur, further reducing the adjustment precision. At the same time, straight-edge fan blades also increase airflow resistance, resulting in increased airflow noise and affecting the user experience. Utility Model Content

[0006] The present invention aims to solve the technical problems of inconvenient assembly and maintenance of the electric air outlet fan blades in the prior art, which rely heavily on integrated or bolt-fixed designs. Damage to a single component requires disassembly of the entire unit, and long-term vibration can easily lead to loose connections, increasing maintenance costs and workload. It also solves the technical problems of low synchronous adjustment accuracy and poor stability of the existing fan blades, and the tendency for power transmission to swing asynchronously due to backlash or assembly errors.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An electric air outlet fan blade accessory, comprising:

[0009] The slotted fan blades are evenly spaced and installed on the inside of the air outlet frame;

[0010] The locking block I corresponds to the front end of the slotted fan blade, and the shaft I on the locking block I passes through the front end of the air outlet frame and is rotatably connected to the air outlet frame;

[0011] The locking block II corresponds to the rear end of the slotted fan blade, and the shaft II on the locking block II passes through the rear end of the air outlet frame and is rotatably connected to the air outlet frame.

[0012] Block III is inserted into the slotted fan blade and is located inside Block II. Block III and Block II are connected by a plug-in rod.

[0013] The linkage plate is fitted onto the outer side of each plug rod to achieve linkage of several slotted fan blades;

[0014] A sector gear is fixed to the outer side of the shaft II on one of the locking blocks II. By moving the sector gear, one of the slotted fan blades is driven to swing. Under the action of the linkage plate, several slotted fan blades arranged at equal distances swing synchronously to achieve the adjustment of the air outlet. The overall structure, through the sector gear drive and the linkage plate, can drive all the slotted fan blades to swing synchronously, so as to achieve convenient adjustment of the air outlet.

[0015] Preferably, the slotted fan blade has an arc-shaped slot with an opening at the top and two inclined U-shaped slots on both sides of the arc-shaped slot.

[0016] As a preferred embodiment, each of the card blocks I, II, and III is equipped with an arc-shaped card block that engages with the arc-shaped card slot, and two inclined U-shaped card blocks that engage with the inclined U-shaped card slot. The engagement of a fan blade with the arc-shaped and inclined U-shaped card slots and card blocks enhances the connection stability between the two and improves the assembly accuracy and efficiency.

[0017] Preferably, the connecting part II at the top of the card block II is provided with a plug-in groove that mates with the plug-in rod on the card block III. The plug-in rod is fixed on the connecting part III at the top of the card block III. The card block II and the card block III are connected through the plug-in groove and the plug-in rod, eliminating the need for screws and simplifying assembly and subsequent disassembly.

[0018] Preferably, both the connecting part II at the top of the card block II and the connecting part III at the top of the card block III are provided with a lever. The lever is designed to facilitate manual movement of the card blocks II and III, making it easy to adjust their positions on the card slot fan blade.

[0019] Preferably, the air outlet frame is provided with a U-shaped opening to provide clearance for the rotation of the sector gear. The U-shaped opening provides space for the rotation of the sector gear, avoids friction between the gear and the air outlet frame, ensures smooth operation of the gear and facilitates maintenance.

[0020] As a preferred embodiment, the lower convex plates arranged at equal intervals on the linkage plate are provided with through holes that are adapted to the plug-in rod for insertion and positioning. The through holes of the lower convex plates of the linkage plate are adapted to the plug-in rod, ensuring that all fan blades swing synchronously, and also enhancing the structural strength and connection stability of the linkage plate.

[0021] Preferably, the two ends of the slotted fan blade are provided with arc-shaped parts with opposite curvature directions. The opposite arc-shaped parts at both ends of the fan blade can guide the airflow smoothly and reduce the noise generated by wind resistance and airflow friction.

[0022] Compared with the prior art, the technical effects and advantages of this utility model are:

[0023] This invention significantly improves the ease of assembly and maintenance. By precisely matching the slots and blocks and connecting the plug rods of blocks II and III, it replaces the complex fixing method in the prior art. This not only allows for the rapid assembly of each component of the fan blade accessories, but also enables individual replacement of any single component without disassembling the entire structure if a problem occurs later, greatly reducing maintenance difficulty and cost.

[0024] Regarding the precision of fan blade adjustment, this invention utilizes the cooperation of a linkage plate and a plug-in rod to enable all fan blades to move synchronously when a single fan blade swings, effectively avoiding the asynchronous adjustment of fan blades in the prior art, ensuring more precise adjustment of the air outlet angle and more stable and orderly airflow.

[0025] This invention optimizes the fan blade structure design, with arc-shaped sections at both ends of the fan blade having opposite curvature directions. Compared with the traditional fan blade structure in the prior art, it can better guide airflow, reduce air resistance when airflow passes through, and reduce noise generated by airflow friction, thereby improving the overall user experience.

[0026] In terms of component operation stability and service life, this utility model provides sufficient space for the rotation of the fan gear by setting a U-shaped opening on the air outlet frame, avoiding frictional wear between the gear and the frame; and the composite snap-fit ​​structure between the fan blade and the locking block enhances the stability of the connection between the components, reduces loosening and displacement problems during long-term use, and extends the overall service life of the accessories. Attached Figure Description

[0027] Figure 1 This is a first-view diagram of the present invention;

[0028] Figure 2 This is a second-view diagram of the present invention;

[0029] Figure 3A schematic diagram of the structure for mounting locking blocks I, II, and III on the slotted fan blade of this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the slotted fan blade of this utility model;

[0031] Figure 5 This is a diagram showing the engagement state of the slotted fan blade with the locking block II.

[0032] Figure 6 This is a diagram showing the state of the card block II and card block III being inserted and connected in this utility model.

[0033] Figure 7 This is a schematic diagram of the structure of the card block I of this utility model;

[0034] Figure 8 This is a schematic diagram of the structure of the card block III of this utility model;

[0035] Figure 9 This is a schematic diagram of the structure of the card block II of this utility model;

[0036] Figure 10 This is a schematic diagram of the structure of the linkage plate and the insert rod on the card block Ⅲ of this utility model.

[0037] Figure 11 This is an exploded view of the linkage plate and card block II and card block III of this utility model.

[0038] In the picture:

[0039] 1. Slotted fan blades; 11. Arc-shaped slot; 12. U-shaped slot; 13. Arc-shaped section;

[0040] 2. Air outlet frame; 201. U-shaped opening;

[0041] 3. Locking block I; 301. Arc-shaped locking block; 302. Inclined U-shaped locking block; 303. Shaft I;

[0042] 4. Locking block II; 401. Connecting part II; 402. Insertion groove; 403. Shaft II;

[0043] 5. Locking block III; 501. Connecting rod; 502. Connecting part III; 503. Pulling block;

[0044] 6. Linkage plate; 601. Lower convex plate; 602. Through hole;

[0045] 7. Sector gear. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] The following combination Figures 1 to 11 This application will be described in further detail.

[0048] This application discloses an electric air outlet fan blade accessory, including a slotted fan blade 1, a locking block I 3, a locking block II 4, a locking block III 5, a linkage plate 6, and a sector gear 7;

[0049] The slotted fan blades 1 are evenly arranged and installed on the inner side of the air outlet frame 2; the locking block I 3 is inserted into the front end of the slotted fan blade 1, and the shaft I 303 on the locking block I 3 passes through the front end of the air outlet frame 2 and is rotatably connected to the air outlet frame 2; the locking block II 4 is inserted into the rear end of the slotted fan blade 1, and the shaft II 403 on the locking block II 4 passes through the rear end of the air outlet frame 2 and is rotatably connected to the air outlet frame 2; the locking block III 5 is inserted into the slotted fan blade 1 and is located inside the locking block II 4, and the locking block III 5 and the locking block II 4 are connected by the plug rod 501; the linkage plate 6 is sleeved on the outer side of each plug rod 501 to realize the linkage of several slotted fan blades 1; the sector gear 7 is fixed on the outer side of the shaft II 403 on one of the locking blocks II 4, and by moving the sector gear 7, one of the slotted fan blades 1 is driven to swing, and under the action of the linkage plate 6, several slotted fan blades 1 arranged at equal distances are driven to swing synchronously to realize the adjustment of the air outlet.

[0050] The original sector gear 7 is fixed on the outside of the shaft II403 of one of the locking blocks II4. When external power, such as motor drive or manual operation, is applied to the sector gear 7, the gear drives the shaft II403 to rotate, which in turn drives the single slotted fan blade 1 that is locked with the locking block II4 to swing around the axis, thus completing the power transmission from the gear to the single fan blade.

[0051] Block III5 is connected to block II4 via a plug-in rod 501. The linkage plate 6 is sleeved on the outside of the plug-in rods 501 of all blocks III5 through the through hole 602 of the lower protrusion plate 601, so that all the fan blades are connected in series. When a single fan blade swings, the plug-in rod 501 of block III5 pushes the linkage plate 6 to move. The linkage plate 6 then drives the remaining blocks III5 and blocks II4 to rotate through other through holes 602, so that all the slotted fan blades 1 arranged at equal distances swing synchronously.

[0052] The shaft I303 of the locking block I3 passes through the front end of the air outlet frame 2, and the shaft II403 of the locking block II4 passes through the rear end of the air outlet frame 2. Both are rotatably connected to the air outlet frame 2, providing two support points for the fan blade oscillation. At the same time, the fan blade is precisely engaged with the locking blocks I3, II4, and III5 through the locking slots, avoiding relative sliding, ensuring stability during the adjustment process, and ultimately achieving precise control of the air outlet angle.

[0053] The slotted fan blade 1 is provided with an arc-shaped slot 11 with an opening at the top and two inclined U-shaped slots 12 located on both sides of the arc-shaped slot 11. The locking blocks I 3, II 4 and III 5 are each provided with an arc-shaped locking block 301 that engages with the arc-shaped slot 11 and two inclined U-shaped locking blocks 302 that engage with the inclined U-shaped slots 12.

[0054] What are the advantages of the slotted fan blade 1? It is equipped with an arc-shaped slot 11 with an opening at the top and U-shaped slots 12 with inclined sides. The slot blocks I 3, II 4, and III 5 are all equipped with matching arc-shaped slot blocks 301 and double inclined U-shaped slot blocks 302, forming a composite snap-fit ​​structure of one arc-shaped slot block 301 and two inclined U-shaped slot blocks 302.

[0055] Compared to a single slot, the composite snap-fit ​​structure increases the contact area and engagement points between the fan blade and the locking block, effectively preventing the fan blade from shifting, loosening, or falling off during long-term oscillation, ensuring the stability of the connection between components, and extending service life. The arc-shaped slot 11 cooperates with the locking block to achieve radial positioning, while the inclined U-shaped slot 12 cooperates with the locking block to achieve circumferential positioning. This dual positioning eliminates the need for repeated calibration during fan blade and locking block installation, significantly improving assembly accuracy and efficiency.

[0056] The slotted fan blade 1 has arc-shaped portions 13 at both ends with opposite curvature directions. The arc-shaped portions 13 guide the airflow along a preset arc trajectory, reducing eddy currents at the blade edge, lowering wind resistance, and making the airflow smoother and more concentrated, avoiding the problems of dispersed and turbulent airflow caused by traditional straight-edged fan blades. When the airflow comes into contact with the arc-shaped portions 13, the impact force is smaller, and the noise generated by airflow friction is significantly reduced, improving the quiet experience during use, especially suitable for noise-sensitive scenarios such as cars and bedrooms.

[0057] The connecting part II401 at the top of the locking block II4 has a plug-in groove 402 that mates with the plug-in rod 501 on the locking block III5. The plug-in rod 501 is fixed to the connecting part III502 at the top of the locking block III5. The connecting part II401 at the top of the locking block II4 has a plug-in groove 402, and the connecting part III502 at the top of the locking block III5 has a fixed plug-in rod 501. The two are connected by inserting the plug-in rod 501 into the plug-in groove 402. The plug-in connection does not require screw fixation and can be assembled by manual insertion. Compared with the threaded connection, the assembly time is shortened, and it can be directly pulled out for disassembly, making it convenient to operate.

[0058] Both the connecting part II401 at the top of the locking block II4 and the connecting part III502 at the top of the locking block III5 are equipped with a lever 503. This allows for easy movement of the locking blocks II4 and III5 on the slotted fan blade 1 using the lever 503, making operation convenient.

[0059] The air outlet frame 2 is provided with a U-shaped opening 201 to provide clearance for the rotation of the sector gear 7. When the sector gear 7 rotates, it will produce a certain range of circular motion. The U-shaped opening 201 can provide enough space to prevent the gear from colliding and rubbing against the inner wall of the air outlet frame 2, ensuring smooth gear rotation and reducing component wear. The U-shaped opening 201 allows direct observation of the operating status of the sector gear 7. When cleaning, lubricating, or replacing the gear, it is not necessary to disassemble the air outlet frame 2, reducing maintenance difficulty and cost.

[0060] The lower convex plates 601 arranged at equal intervals on the linkage plate 6 have through holes 602 that are adapted to the insertion rods 501 for positioning. The equal-distance arrangement of the lower convex plates 601 corresponds one-to-one with the fan blades, and the precise fit between the through holes 602 and the insertion rods 501 ensures that all insertion rods 501 are subjected to uniform force when the linkage plate 6 moves, driving all fan blades to swing synchronously, avoiding misalignment of individual fan blades, and controlling synchronization error to a very small range. The lower convex plates 601 enhance the structural strength of the linkage plate 6, preventing long-term deformation under stress; simultaneously, the sleeve structure between the through holes 602 and the insertion rods 501 makes the connection between the linkage plate 6 and the locking block III 5 more secure, preventing detachment during linkage.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric air outlet fan blade accessory, characterized in that, include: The slotted fan blades (1) are evenly spaced and installed on the inside of the air outlet frame (2); The locking block I (3) is inserted into the front end of the slotted fan blade (1), and the shaft I (303) on the locking block I (3) passes through the front end of the air outlet frame (2) and is rotatably connected to the air outlet frame (2); The locking block II (4) is inserted into the rear end of the slotted fan blade (1), and the shaft II (403) on the locking block II (4) passes through the rear end of the air outlet frame (2) and is rotatably connected to the air outlet frame (2); Card block Ⅲ (5) is inserted into the slotted fan blade (1) and located inside card block Ⅱ (4). Card block Ⅲ (5) and card block Ⅱ (4) are connected by a plug rod (501). The linkage plate (6) is sleeved on the outer side of each plug rod (501) to realize the linkage of several slotted fan blades (1); The sector gear (7) is fixed on the outer side of the shaft II (403) on one of the card blocks II (4). By moving the sector gear (7), one of the slotted fan blades (1) swings. Under the action of the linkage plate (6), several slotted fan blades (1) arranged at equal distances swing synchronously to realize the adjustment of the air outlet.

2. The electric air outlet fan blade accessory according to claim 1, characterized in that: The slotted fan blade (1) has an arc-shaped slot (11) with an opening at the top and two inclined U-shaped slots (12) on both sides of the arc-shaped slot (11).

3. The electric air outlet fan blade accessory according to claim 2, characterized in that: Card block I (3), card block II (4) and card block III (5) are each provided with an arc-shaped card block (301) that engages with the arc-shaped card groove (11) and two inclined U-shaped card blocks (302) that engage with the inclined U-shaped card groove (12).

4. The electric air outlet fan blade accessory according to claim 1, characterized in that: The connecting part II (401) at the top of the card block II (4) is provided with a plug groove (402) that is compatible with the plug rod (501) on the card block III (5). The plug rod (501) is fixed on the connecting part III (502) at the top of the card block III (5).

5. The electric air outlet fan blade accessory according to claim 4, characterized in that: Both the connecting part II (401) at the top of the card block II (4) and the connecting part III (502) at the top of the card block III (5) are provided with a lever (503).

6. The electric air outlet fan blade accessory according to claim 1, characterized in that: The air outlet frame (2) is provided with a U-shaped opening (201) to provide clearance space for the rotation of the sector gear (7).

7. The electric air outlet fan blade accessory according to claim 1, characterized in that: The lower convex plates (601) arranged at equal intervals on the linkage plate (6) are provided with through holes (602) that are adapted to be inserted and positioned for the insertion rod (501).

8. The electric air outlet fan blade accessory according to claim 1, characterized in that: The two ends of the slotted fan blade (1) are provided with arc-shaped parts (13) with opposite bending directions.

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