Electric air outlet anti-pinch mechanism and automobile air outlet device

Abstract

The utility model discloses an electric air outlet anti-pinch mechanism and an automobile air outlet device, which comprise a main rotating part driven by an actuator to rotate, an auxiliary rotating part directly or indirectly coupled with an air guide blade, an axial groove arranged on the end face of the main rotating part facing the auxiliary rotating part, and a mounting space arranged on the outer side of the axial groove; the elastic piece is fixed in the mounting space, a protruding elastic protrusion is formed through bending, and the elastic protrusion extends into the axial groove; the slave rotating piece is provided with an access body embedded into the axial groove, and the side face of the access body is provided with a sunken part matched with the elastic protrusion and used for transmitting the torque of the master rotating piece to the slave rotating piece; when the air guide blades are blocked and the resistance torque exceeds the critical holding force between the elastic protrusions and the concave parts, the elastic protrusions are compressed and slide out of the concave parts, the main rotating piece idles relative to the auxiliary rotating piece, torque transmission is cut off, and clamping accidents are avoided. The utility model relates to the technical field of passenger car air conditioning systems.

Description

Technical Field

[0001] This utility model relates to the field of passenger vehicle air conditioning system technology, and more specifically to an electric air outlet anti-pinch mechanism and an automotive air outlet device. Background Technology

[0002] In the wave of automotive intelligence, some automakers have taken the lead in launching electric air vents equipped with automatic reset anti-pinch mechanisms. By integrating pressure sensors and intelligent control algorithms, these vents can instantly stop when foreign objects touch the air guide vanes, thus preventing accidents such as pinching injuries caused by the continued rotation of the vanes and significantly improving the safety performance of electric air vents.

[0003] The anti-pinch mechanism of the aforementioned air vents has a complex structure and a large number of parts, which leads to a surge in costs. Therefore, how to reduce costs while ensuring functionality and quality has become the key for automakers to enhance their competitiveness. Utility Model Content

[0004] To address the shortcomings and defects of existing technologies, an electric air vent anti-pinch mechanism for automobile air vents is provided, which avoids pinching accidents, automatically resets after the risk is eliminated, and is low in cost.

[0005] An anti-pinch mechanism for an electric air outlet, comprising:

[0006] The main rotating component is driven to rotate by an actuator.

[0007] The secondary rotating component is axially superimposed on the main rotating component, and the secondary rotating component is directly or indirectly coupled to the guide vanes.

[0008] The main rotating component has an axial groove on its end face facing the driven rotating component.

[0009] An installation space is provided on the outside of the axial groove;

[0010] The spring is fixed in the installation space and is formed by bending to form a protruding elastic protrusion that extends into the axial groove.

[0011] The rotating component is provided with an access body that is embedded in the axial groove.

[0012] A recessed portion matching the elastic protrusion is provided on the side of the access body.

[0013] The elastic protrusion abuts against the recess to form a locking action, which is used to transmit the torque of the main rotating member to the slave rotating member;

[0014] When the guide vane is obstructed and the drag torque exceeds the critical holding force between the elastic protrusion and the recess, the elastic protrusion is compressed and slides out of the recess, causing the main rotating member to idle relative to the driven rotating member, thereby cutting off torque transmission.

[0015] After the elastic protrusion slides out of the recess, it can elastically abut against the recess again to form a locking engagement when the main rotating member rotates to align the elastic protrusion with the recess.

[0016] With the above structure, the electric air outlet anti-pinch mechanism of this utility model has the following advantages compared with the prior art:

[0017] When the air guide vane touches a foreign object such as a finger or pet, and the air guide vane is obstructed and the resistance torque exceeds the critical holding force between the elastic protrusion and the recess, the elastic protrusion is compressed and slides out of the recess, causing the main rotating component to idle relative to the driven rotating component, thereby cutting off the torque transmission. At this time, the torque output by the actuator cannot act on the air guide vane to drive it to rotate, thus avoiding pinching accidents, greatly improving the user's sense of security, and effectively absorbing the impact force of the obstructed air guide vane on the actuator and other moving parts, significantly reducing mechanical wear and extending the product's service life.

[0018] If the air guide vane does not come into contact with fingers, pets or other foreign objects during the idling of the main rotating component, the air guide vane will not be obstructed. When the main rotating component rotates to the point where the elastic protrusion and the recess are aligned, the elastic protrusion will elastically push into the recess to form a lock, thus achieving automatic reset. The torque output by the actuator can be applied to the air guide vane to drive it to rotate. After the risk is eliminated, automatic reset is achieved, which greatly improves the user's operational convenience.

[0019] Compared with solutions that integrate pressure sensors and intelligent control algorithms, the structure of this application is simpler and the cost is lower. It is compatible with various types of electric air outlet architectures and enables product iteration and upgrades.

[0020] As an improvement of this utility model, the outer peripheral side of the access body is a continuous arc surface, and the recessed part is located in the middle section of the arc path of the arc surface.

[0021] After the elastic protrusion slides out of the recess, it elastically abuts against the arc surface and slides along the arc path until it abuts against the recess again.

[0022] As an improvement to this utility model, the two ends of the spring are bent inward to form a locking part.

[0023] A block is provided in the installation space to align with the engaging part.

[0024] The spring sheet undergoes elastic deformation to engage with the block at the locking part.

[0025] An automotive air vent device includes an anti-pinch mechanism for an electric air vent as described in any one of the above descriptions, and also includes a housing with an air vent channel.

[0026] The air guide vanes are installed inside the air outlet duct.

[0027] The actuator is mounted on the housing, and the actuator is equipped with an output gear.

[0028] The main rotating component is provided with an input gear that meshes with the output gear.

[0029] A connecting shaft is provided on the housing. The main rotating component and the driven rotating component are each sleeved on the connecting shaft through the central hole and are axially limited by the limiting structure on the connecting shaft.

[0030] As an improvement of this utility model, the number of guide vanes is multiple, and each vane is rotatably connected to the housing via a rotating shaft.

[0031] Each guide vane has a connecting rod on its rotating shaft.

[0032] Furthermore, the ends of each connecting rod are hinged to the same linkage rod, so that the multiple guide vanes are interconnected.

[0033] A shaft parallel to the axis of rotation is provided on one of the connecting rods.

[0034] The rotating component has a radially extending crank portion, on which an elongated transmission groove is formed.

[0035] The shaft is placed in the transmission groove. When the rotating part rotates, the side wall of the transmission groove moves the shaft and drives the guide vanes to rotate through the connecting rod. Attached Figure Description

[0036] Figure 1 This is a structural schematic diagram of an electric air outlet anti-pinch mechanism according to this utility model.

[0037] Figure 2 This is a schematic diagram of the main rotating component and the driven rotating component of this utility model under an explosive state.

[0038] Figure 3 This is a schematic diagram of the rotating component of this utility model.

[0039] Figure 4 This is a front view structural diagram of the main rotating component and the driven rotating component of this utility model.

[0040] Figure 5 This is the utility model Figure 4 Schematic diagram of the cross-sectional structure along the AA direction.

[0041] Figure 6 This is the utility model Figure 5 Enlarged schematic diagram of the structure at point B.

[0042] Figure 7 This is a structural schematic diagram of an automotive air vent device according to the present invention.

[0043] Figure 8 This is a schematic diagram of the transmission structure between the rotating part and the guide vanes of an automotive air outlet device according to this utility model.

[0044] The figure shows: 1. Actuator; 2. Main rotating component; 2.1. Axial groove; 2.2. Installation space; 2.21. Block; 2.3. Input gear; 3. Slave rotating component; 3.1. Connecting body; 3.11. Arc surface; 4. Spring; 4.1. Elastic protrusion; 4.2. Engaging part; 5. Recessed part; 6. Guide vane; 6.1. Connecting rod; 6.11. Shaft; 6.12. Linkage rod; 7. Housing; 7.1. Air outlet channel; 8. Crank part; 8.1. Transmission groove. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] Please see Figure 1-6 As shown,

[0047] An anti-pinch mechanism for an electric air outlet, comprising:

[0048] The main rotating component 2 is driven to rotate by actuator 1.

[0049] Rotating component 3 is axially superimposed on main rotating component 2, and rotating component 3 is directly or indirectly coupled to guide vane 6.

[0050] The main rotating component 2 has an axial groove 2.1 on its end face facing the driven rotating component 3.

[0051] An installation space 2.2 is provided on the outside of the axial groove 2.1;

[0052] The spring piece 4 is fixed in the installation space 2.2 and is formed by bending to form a protruding elastic protrusion 4.1, which extends into the axial groove 2.1;

[0053] The rotating component 3 is provided with an access body 3.1 that is embedded in the axial groove 2.1.

[0054] A recess 5 matching the elastic protrusion 4.1 is provided on the side of the access body 3.1.

[0055] In some embodiments, the recess 5 can be a slot with a hemispherical structure.

[0056] The elastic protrusion 4.1 abuts against the recess 5 to form a locking, which is used to transmit the torque of the main rotating member 2 to the slave rotating member 3;

[0057] When the air guide vane 6 comes into contact with a foreign object such as a finger or pet, and the air guide vane 6 is obstructed and the drag torque exceeds the critical holding force between the elastic protrusion 4.1 and the recess 5, the elastic protrusion 4.1 is compressed and slides out of the recess 5, and the locking fails.

[0058] The main rotating component 2 rotates freely relative to the driven rotating component 3 to cut off torque transmission. At this time, the torque output by the actuator 1 cannot act on the guide vane 6 to drive it to rotate, thereby avoiding pinching accidents, greatly improving the user's sense of security, and effectively absorbing the impact force of the obstructed guide vane 6 on the actuator 1 and other moving parts, significantly reducing mechanical wear and extending the product's service life.

[0059] During the idling process of the main rotating component 2, if the air guide vane 6 does not touch any foreign objects such as fingers or pets, the air guide vane 6 will not be obstructed. When the main rotating component 2 rotates to the point where the elastic protrusion 4.1 aligns with the recessed part 5, the elastic protrusion 4.1 will elastically abut against the recessed part 5 again to form a lock, thus achieving automatic reset. The torque output by the actuator 1 can act on the air guide vane 6 to drive it to rotate. After the risk is eliminated, automatic reset is achieved, greatly improving the user's operational convenience.

[0060] Compared with solutions that integrate pressure sensors and intelligent control algorithms, the structure of this application is simpler and less expensive, and it can be compatible with various types of electric air outlet architectures, enabling product iteration and upgrades.

[0061] This application also has the following features:

[0062] 1. The elastic protrusion formed by bending the spring piece 4 has the characteristics of simple structure, low cost, and is conducive to mass production or procurement.

[0063] In addition, springs 4 with various rigidity properties are available for selection, and the mechanical properties can be flexibly matched according to actual working conditions, so that the torque for triggering the anti-pinch mechanism is adjustable, and springs 4 with appropriate trigger thresholds can be selected according to vehicle model requirements.

[0064] 2. The mechanism has a shorter axial length, better overall structure and compactness, making it suitable for use in air outlets with limited space. The core structure is also concealed, avoiding the structure from protruding outwards and being easily damaged by external factors.

[0065] Please see Figure 3 , Figure 5 , Figure 6 As shown, the outer peripheral side of the access body 3.1 is a continuous arc surface 3.11, and the recessed part 5 is provided in the middle section of the arc path of the arc surface 3.11;

[0066] After the elastic protrusion 4.1 slides out of the recess 5, it elastically abuts against the arc surface 3.11. During the idling process of the main rotating component 2, the elastic protrusion 4.1 slides along the arc-shaped path of the arc surface 3.11, providing a guiding function for the elastic protrusion 4.1.

[0067] The above improvements ensure that after the elastic protrusion 4.1 slips out, it can only slide along the arc surface 3.11 and will eventually fall into the recess 5. This allows the elastic protrusion 4.1 to accurately return to its original position and abut against the recess 5, making the reset reliability of the elastic protrusion 4.1 better.

[0068] In addition, when the elastic protrusion 4.1 abuts against the arc surface 3.11, it is compressed to keep it in the preset assembly position. In the rotational movement trajectory, there are no obstructions blocking the side wall of the elastic protrusion 4.1, which can prevent the spring piece 4 from being damaged or dislodged from the assembly position, thereby further improving the reliability of the device operation and extending its service life.

[0069] Please see Figure 6 As shown, the two ends of the spring piece 4 are bent inward to form the engaging part 4.2.

[0070] A block 2.21, which aligns with the engaging part 4.2, is provided in the installation space 2.2.

[0071] During assembly, the spring piece 4 is unfolded outward so that the block 2.21 enters the inner side of the engaging part 4.2. Then the spring piece 4 is released, and the engaging part 4.2 elastically rebounds and holds the block 2.21 so that the spring piece 4 is stably held in the preset assembly position. The spring piece 4 does not need to be fixed to the installation space 2.2 with screws or rivets, which is conducive to automated production assembly.

[0072] Please see Figure 7-8 As shown, an automotive air vent device includes an electric air vent anti-pinch mechanism as described in any of the above descriptions, and also includes a housing 7. The housing 7 is provided with an air outlet channel 7.1 for receiving airflow and outputting it.

[0073] The guide vane 6 is installed inside the air outlet duct 7.1. When driven to rotate by the rotating component 3, it can cause the guide vane 6 to swing, thereby acting on the passing airflow and adjusting its direction.

[0074] Actuator 1 is located on the outer wall of housing 7, and actuator 1 is equipped with an output gear.

[0075] The main rotating component 2 is equipped with an input gear 2.3 that meshes with the output gear, thereby introducing the torque of the actuator 1 into the anti-pinch mechanism.

[0076] A connecting shaft is provided on the housing 7 and is integrally injection molded with the housing 7. The main rotating part 2 and the driven rotating part 3 are each sleeved on the connecting shaft through the central hole and are axially limited by the limiting structure on the connecting shaft. The limiting structure can be a radially protruding limiting block, and two axially spaced limiting blocks are provided on the connecting shaft. The main rotating part 2 and the driven rotating part 3 are sleeved between the two limiting blocks.

[0077] In some embodiments, the rotating component 3 is directly coupled to the air guide vane 6, and the air guide vane 6 can be directly mounted on the rotating component 3. The air guide vane 6 is rotated synchronously by the rotation of the rotating component 3, thereby achieving airflow regulation.

[0078] In some embodiments, the rotating member 3 is indirectly coupled to the guide vane 6:

[0079] There are multiple guide vanes 6, each rotatably connected to the housing 7 via a rotating shaft. The rotating shaft is arranged parallel to the axis of the main rotating component 2 and the driven rotating component 3.

[0080] Each guide vane 6 has a connecting rod 6.1 mounted on its rotating shaft.

[0081] Furthermore, the ends of each connecting rod 6.1 are hinged to the same linkage rod 6.12, so that the multiple air guide blades 6 are interconnected.

[0082] A shaft 6.11 parallel to its axis of rotation is provided on one of the connecting rods 6.1.

[0083] The rotating component 3 has a radially extending crank portion 8, on which an elongated transmission groove 8.1 is formed.

[0084] Shaft 6.11 is placed inside transmission groove 8.1.

[0085] When actuator 1 drives the main rotating component 2 to rotate, the main rotating component 2 drives the secondary rotating component 3 to rotate through the elastic protrusion 4.1 and the recess 5. The shaft 6.11 is pushed from the side wall of the transmission groove 8.1 of the rotating component 3, and the guide vane 6 is driven to rotate through the connecting rod 6.1. Since the guide vane 6 is linked to each other through the linkage rod 6.12, multiple guide vanes 6 can rotate in almost parallel order to achieve a better airflow regulation effect.

[0086] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An anti-pinch mechanism for an electric air outlet, characterized in that, include: The main rotating component (2) is driven to rotate by the actuator (1). The secondary rotating component (3) is axially superimposed on the main rotating component (2), and the secondary rotating component (3) is directly or indirectly coupled to the guide vane (6). The main rotating component (2) has an axial groove (2.1) on its end face facing the secondary rotating component (3). An installation space (2.2) is provided on the outside of the axial groove (2.1); The spring piece (4) is fixed in the installation space (2.2) and is formed by bending to form a protruding elastic protrusion (4.1), which extends into the axial groove (2.1); The rotating member (3) is provided with an axial groove ( Access body (3.1) within 2.1), A recess (5) matching the elastic protrusion (4.1) is provided on the side of the access body (3.1). The elastic protrusion (4.1) abuts against the recess (5) to form a locking, for transmitting the torque of the main rotating member (2) to the slave rotating member (3). When the guide vane (6) is obstructed and the resistance torque exceeds the critical holding force between the elastic protrusion (4.1) and the recess (5), the elastic protrusion (4.1) is compressed and slides out of the recess (5), causing the main rotating member (2) to idle relative to the secondary rotating member (3) to cut off torque transmission; After the elastic protrusion (4.1) slides out of the recess (5), it can elastically abut against the recess (5) again to form a lock when the main rotating member (2) rotates to the point where the elastic protrusion (4.1) and the recess (5) are aligned.

2. The electric air outlet anti-pinch mechanism according to claim 1, characterized in that: The outer peripheral side of the access body (3.1) is a continuous arc surface (3.11), and the recess (5) is located in the middle section of the arc path of the arc surface (3.11); When the elastic protrusion (4.1) slides out of the recess (5), it elastically abuts against the arc surface (3.11) and slides along the arc path until it abuts against the recess (5) again.

3. The electric air outlet anti-pinch mechanism according to claim 2, characterized in that: The two ends of the spring piece (4) are bent inward to form a locking part (4.2). A block (2.21) is provided in the installation space (2.2) to align with the engaging part (4.2). The spring (4) is elastically deformed so that the engaging part (4.2) engages with the block (2.21).

4. A car air vent device, characterized in that: The device includes an electric air outlet anti-pinch mechanism as described in any one of claims 1-3, and also includes a housing (7) with an air outlet channel (7.1). The guide vane (6) is installed inside the air outlet duct (7.1). The actuator (1) is mounted on the housing (7), and the actuator (1) is provided with an output gear. The main rotating component (2) is provided with an input gear (2.3) that meshes with the output gear. A connecting shaft is provided on the housing (7). The main rotating part (2) and the driven rotating part (3) are each sleeved on the connecting shaft through the central hole and are axially limited by the limiting structure on the connecting shaft.

5. The automotive air vent device according to claim 4, characterized in that: The number of the air guide blades (6) is multiple, and each is rotatably connected to the housing (7) via a rotating shaft. Each guide vane (6) has a connecting rod (6.1) on its rotating shaft. Furthermore, the ends of each connecting rod (6.1) are hinged to the same linkage rod (6.12) so that the multiple guide vanes (6) are connected. Inter-functionality settings; A shaft (6.11) parallel to the axis of rotation is provided on one of the links (6.1). The rotating member (3) is provided with a crank portion (8) extending radially, and an elongated transmission groove (8.1) is provided on the crank portion (8). The shaft (6.11) is placed in the transmission groove (8.1). When the rotating part (3) rotates, the side wall of the transmission groove (8.1) moves the shaft (6.11) and drives the guide vane (6) to rotate through the connecting rod (6.1).

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