Vehicle air conditioner filter adopting three-dimensional supporting framework variable structure

Abstract

The invention discloses a vehicle air conditioner filter adopting a three-dimensional support framework variable structure, relates to the technical field of vehicle air conditioner filters, and aims to solve the problem that a filter layer deviates or even falls off due to a bumping state in a use scene of the vehicle air conditioner filter. Comprising an auxiliary frame body and a main frame which are connected in an inserted mode, and supporting framework structures are installed on the two sides of the inner wall of the auxiliary frame body through lower tooth grooves; the vehicle air conditioner filter is composed of a gear / rack structure, a hinged type supporting framework structure and filter cloth, the adjustable hinged type supporting framework structure drives the filter cloth to achieve adjustment of the air inlet area, and the vehicle air conditioner filter is applied to the self-locking function of the gear / rack structure combined with a rotating screw structure in practice; the filter layer supporting framework structure of the air conditioner filter can be ensured to be stable and anti-falling in a bumpy scene; due to the structural design of the detachable main frame and the detachable auxiliary frame, the filter layer can be replaced without damage after adsorption saturation, so that the use cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning filter technology, specifically to an automotive air conditioning filter employing a three-dimensional support frame with a variable structure. Background Technology

[0002] The automotive cabin air filter is a core component for ensuring air quality inside the vehicle. Its frame structure directly determines the filter's installation compatibility, filtration stability, service life, and ease of maintenance. Currently, most mainstream automotive cabin air filter frames are fixed, one-piece structures.

[0003] Referring to the invention patent application No. 202510072566.3, which discloses an automotive air conditioning filter, it can adjust the air intake surface according to the density of impurities. However, the service life of automotive air conditioning filters varies depending on the usage scenario. When they cannot be cleaned or even lose their air filtration effect, they need to be replaced. The integrated structure of the invention cannot remove and replace the filter part. At the same time, the use of structures such as belt drive components and motor drive components is easily loosened by vehicle bumps. Considering the above defects, when applied to high-frequency replacement scenarios, once replaced, the entire filter needs to be replaced. Moreover, the possible misalignment or detachment between the belt drive components and filter cloth after bumps will prevent it from achieving the adjustable air intake surface function. Therefore, this application proposes a solution. Summary of the Invention

[0004] The purpose of this invention is to provide an automotive air conditioning filter with a variable structure of a three-dimensional support frame, in order to solve the defects of existing automotive air conditioning filters.

[0005] The objective of this invention can be achieved through the following technical solution: a vehicle air conditioning filter employing a three-dimensional support frame with a variable structure, comprising a sub-frame and a main frame that are interlocked. Support frame structures are installed on both sides of the inner wall of the sub-frame via lower toothed grooves. Each support frame structure includes a rotating frame that is laterally rolled within the lower toothed groove. A transmission rod is installed through the middle of the end side of each rotating frame. Both ends of the transmission rod extending to the outer side of the rotating frame are fitted with toothed rings that mesh with the lower toothed grooves. A filter cloth for air filtration is commonly fitted around the exterior of several rotating frames. The main frame is interlocked with the sub-frame and internally equipped with an adjustment component for adjusting the air inlet area of ​​the support frame structure.

[0006] The adjustment assembly is further configured such that: the adjustment component includes a rotating screw inserted longitudinally into the middle of one end of the main frame, the inner end of the rotating screw is connected to a rotating bearing, and the rotating bearing is connected to a pair of transmission racks via a connecting rod.

[0007] The configuration is further defined as follows: a pair of transmission racks extend into the lower tooth groove and mesh with the toothed ring, and an adjustment knob is fitted onto one end of the rotating screw that extends to the outside of the main frame.

[0008] The filter cloth is further configured as follows: the filter cloth is an elastic filter layer structure, and the filter cloth is distributed around the frame structure surface of the rotating skeleton, with both ends of the filter cloth being bonded to the frame structure surface of the rotating skeleton.

[0009] Further configuration: the rotating frame is a square frame structure with both ends attached to the inner wall of the sub-frame, and each rotating frame has rivets symmetrically installed at the curved part of the filter cloth.

[0010] The sub-frame is further configured such that both ends of its longitudinal direction are hollow structures, and each hollow structure is equipped with a sealing plate. The sub-frame, through the sealing plate and the filter cloth, forms the air filtration / non-filtration areas on both sides of the air conditioner filter.

[0011] The configuration is further defined as follows: a guide rod is connected to the end of the transmission rack away from the lower tooth groove; a guide ring plate is installed inside the main frame in the direction corresponding to the axis of the guide rod; and a limit plate is provided on the main frame along the moving direction of the transmission rack.

[0012] The sub-frame is further configured such that plug-in plates are installed on both sides of the end of the sub-frame near the main frame, and plug-in holes are opened on the main frame at the longitudinal position corresponding to the plug-in plates. The sub-frame and the main frame are connected by matching plug-in plates with plug-in holes.

[0013] The subframe and the main frame are further configured to be detachably connected, and the rotating bearing and the connecting rod are detachably connected.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention addresses the problem of filter layer displacement or even detachment caused by bumpy conditions in the use of automotive air conditioning filters. This invention utilizes a gear / rack structure, a hinged support frame structure, and filter cloth to construct an automotive air conditioning filter. The adjustable hinged support frame structure drives the filter cloth to adjust the air intake area. In practical application, the self-locking function of the gear / rack structure combined with the rotating screw structure ensures the stability of the filter layer support frame structure in bumpy conditions, preventing detachment. Furthermore, the detachable main and sub-frame design allows for non-destructive replacement of the filter layer after it becomes saturated, effectively reducing operating costs.

[0016] 2. The dual fixing method of adhesive and rivets enhances the connection strength between the filter cloth and the rotating frame, preventing the filter cloth from falling off due to long-term use or frequent adjustments; the elastic filter layer adapts to the rotation of the frame, reducing rigid tension damage, and the rivet fixing of bent parts avoids stress concentration, extending the filter cloth replacement cycle; the close fit design between the square rotating frame and the inner wall of the sub-frame, plus the sealing effect of the sealing plate, ensures that unfiltered air will not leak. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a cross-sectional view of the sub-frame of the present invention;

[0020] Figure 3 This is a side sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation structure of the rotating frame and filter cloth of the present invention;

[0022] Figure 5 This is a partial cross-sectional view of the rotating frame and filter cloth of the present invention;

[0023] Figure 6 This is a cross-sectional view of the transmission state of the rotating frame of the present invention;

[0024] Figure 7 This is a schematic diagram of the installation of the adjustment components in the main frame of the present invention;

[0025] Figure 8 This is a schematic diagram of the installation of the transmission rack of the present invention.

[0026] In the diagram: 1. Sub-frame; 2. Main frame; 3. Filter cloth; 4. Rotating skeleton; 5. Transmission rod; 6. Gear ring; 7. Transmission rack; 8. Rivet; 9. Limiting plate; 10. Rotating screw; 11. Adjusting knob; 12. Rotating bearing; 13. Sealing plate; 14. Lower tooth groove; 15. Connecting rod; 16. Guide hole plate; 17. Guide rod; 18. Insertion plate. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] To address the issue of filter layer displacement or even detachment caused by bumpy conditions in the use of automotive air conditioning filters, the following technical solution is proposed:

[0030] Reference Figure 1 - Figure 8 As shown, the vehicle air conditioning filter with a three-dimensional support frame variable structure in this embodiment includes a sub-frame 1 and a main frame 2 that are inserted into each other. The inner walls of the sub-frame 1 are equipped with support frame structures through lower tooth grooves 14 on both sides. The support frame structure includes a rotating frame 4 that is laterally rolled in the lower tooth groove 14. A transmission rod 5 is installed through the middle of the end side of each rotating frame 4. The two ends of the transmission rod 5 that extend to the outside of the rotating frame 4 are fitted with toothed rings 6 that mesh with the lower tooth groove 14. A filter cloth 3 for air filtration is fitted together on the outside of several rotating frames 4. The main frame 2 is inserted into the sub-frame 1 and is equipped with an adjustment component for adjusting the air intake area of ​​the support frame structure.

[0031] The adjustment assembly includes a rotating screw 10 longitudinally inserted into the middle of one end of the main frame 2. The inner end of the rotating screw 10 is connected to a rotating bearing 12. The rotating bearing 12 is connected to a pair of transmission racks 7 through a connecting rod 15. The pair of transmission racks 7 extend into the lower tooth groove 14 and mesh with the toothed ring 6. An adjustment knob 11 is sleeved on the outer end of the rotating screw 10 extending to the outer side of the main frame 2.

[0032] It should be further explained that the adjustment knob 11 can be replaced by a drive motor to drive the rotating screw 10 to rotate, and a sensor (not shown in the figure) is set at the air inlet. The sensor can detect the density of impurities to provide density information, so that the rotating screw 10 can work according to the density information to achieve automatic adjustment. For example, the type of sensor can be an infrared sensor or a laser sensor. The light emitted by the infrared sensor is reflected when it encounters dust or other impurities. The density of the impurities is determined by detecting the intensity of the reflected light. The present invention does not limit the specific type of sensor.

[0033] A guide rod 17 is connected to one end of the transmission rack 7 away from the lower tooth groove 14. A guide ring plate 16 is installed inside the main frame 2 in the direction of the axis of the guide rod 17. A limit plate 9 is provided on the main frame 2 along the moving direction of the transmission rack 7.

[0034] The transmission process for adjusting the air intake area in this embodiment is as follows: The adjustment knob 11 is manually rotated, which drives the rotating screw 10 fixed to it to rotate around its own axis. The rotating screw 10 converts the rotational motion into linear motion through the rotating bearing 12 at its end, driving the connecting rod 15 to translate longitudinally along the main frame 2. The connecting rod 15 drives a pair of transmission racks 7 to move synchronously. Under the constraint of the guide rod 17 and the guide ring plate 16, the transmission racks 7 maintain the linearity of the translation trajectory and avoid deviation. The transmission racks 7 mesh with the toothed ring 6, converting the linear motion into the rotational motion of the toothed ring 6, which then drives the rotating frame 4 to rotate synchronously through the transmission rod 5. When the transmission racks 7 move to fit against the limiting plate 9, they stop moving to avoid over-adjustment that could cause the toothed ring 6 to detach from the lower tooth groove 14 or the filter cloth 3 to be overstretched.

[0035] Regarding the stable locking motion under bumpy conditions: This embodiment provides a self-locking and double-meshing constraint mechanism composed of a rotating screw 10, a gear ring 6, and a transmission rack 7. Specifically, the rotating screw 10 adopts a trapezoidal thread design, and its thread helix angle is less than the equivalent friction angle of the thread pair, forming a mechanical self-locking mechanism to ensure that the transmission rack 7 will not have axial displacement due to bumps when the adjustment knob 11 is rotated without external force; the gear ring 6 simultaneously meshes with the lower tooth groove 14 and the transmission rack 7 to form a bidirectional limit, preventing the rotating frame 4 from shifting laterally or longitudinally, thereby fixing the installation position of the filter cloth 3.

[0036] The sub-frame 1 is equipped with plug-in plates 16 on both sides of the end near the main frame 2. The main frame 2 has plug-in holes at the longitudinal position corresponding to the plug-in plates 16. The sub-frame 1 and the main frame 2 are connected by matching the plug-in plates 16 with the plug-in holes. The sub-frame 1 and the main frame 2 are detachably connected, and the rotating bearing 12 and the connecting rod 15 are detachably connected.

[0037] Regarding the disassembly and assembly of the main frame 2 and the sub-frame 1, align the plug plate 18 of the sub-frame 1 with the plug hole of the main frame 2 and insert it longitudinally until the transmission rack 7 and the gear ring 6 are precisely engaged, thus completing the assembly; apply a pulling force in the opposite direction to disengage the plug plate 18 from the plug hole, thereby separating the main frame 2 from the sub-frame 1. At the same time, the detachable connection between the rotating bearing 12 and the connecting rod 15 can be separated and adjusted for maintenance / replacement.

[0038] Basic principle: This invention utilizes a gear / rack structure, a hinged support frame structure, and a filter cloth to construct an automotive air conditioning filter. The adjustable hinged support frame structure drives the filter cloth to adjust the air intake area. In practical applications, the self-locking function of the gear / rack structure combined with the rotating screw structure ensures that the filter layer support frame structure of the air conditioning filter remains stable and prevents detachment in bumpy environments. Furthermore, the detachable main and sub-frame design allows for non-destructive replacement of the filter layer after it becomes saturated with adsorption, thereby effectively reducing operating costs.

[0039] Example 2

[0040] Reference Figure 1 - Figure 8 As shown, this embodiment, based on Embodiment 1, further optimizes the connection stability and filtration sealing performance between the filter cloth 3 and the supporting frame structure:

[0041] The filter cloth 3 is an elastic filter layer structure, and the filter cloth 3 is distributed around the frame structure surface of the rotating frame 4. Both ends of the filter cloth 3 are bonded to the frame structure surface of the rotating frame 4. The rotating frame 4 is a square frame structure and its two ends are attached to the inner wall of the sub-frame 1. Rivets 8 are symmetrically installed on the curved parts of each rotating frame 4 corresponding to the filter cloth 3.

[0042] Both ends of the sub-frame 1 are hollow structures, and each of the sub-frame 1 is equipped with a sealing plate 13. The sub-frame 1 forms the air filtering / non-filtering areas on both sides of the air conditioning filter through the sealing plate 13 and the filter cloth 3.

[0043] When the rotating frame 4 rotates, its square frame structure causes the surrounding elastic filter cloth 3 to stretch or contract synchronously. The elastic properties of the filter cloth 3 are adapted to the rotation angle changes of the rotating frame 4, avoiding damage caused by rigid tension. The rivets 8 fix the curved parts of the filter cloth 3, so that the filter cloth 3 always stays in contact with the rotating frame 4 during the rotation process, without wrinkles or slippage, ensuring the accuracy of the air inlet area adjustment.

[0044] The rotating frame 4 is attached to the inner wall of the sub-frame 1 at both ends to form a horizontal seal, which prevents air from leaking from the gap between the rotating frame 4 and the inner wall of the sub-frame. The sealing plate 13 seals the hollow structure at both ends of the sub-frame 1 and together with the filter cloth 3, forms a closed filtration channel to ensure that air can only be filtered through the filter cloth 3 and there is no short circuit of unfiltered air.

[0045] The beneficial effects of this embodiment are as follows: the dual fixing method of adhesive and rivets improves the connection strength between the filter cloth 3 and the rotating frame 4, avoiding filter cloth detachment due to long-term use or frequent adjustment; the elastic filter layer adapts to the rotation of the frame, reducing rigid tension damage; the rivet fixing of bent parts avoids stress concentration, extending the filter cloth replacement cycle; the fit design between the square rotating frame and the inner wall of the sub-frame, plus the sealing effect of the sealing plate, ensures that unfiltered air will not leak.

[0046] Example 3

[0047] Reference Figure 1 - Figure 8 As shown, this embodiment combines the technical content of Embodiment 1 and Embodiment 2 to form the following usage method:

[0048] The assembly process is as follows:

[0049] Step 1: Assembly of filter cloth 3. The elastic filter cloth 3 is wrapped around the square frame surface of the rotating frame 4. First, the two ends of the filter cloth 3 are fixed with adhesive. Then, rivets 8 are symmetrically installed at the curved parts of the filter cloth 3 to complete the fixing of the filter cloth to a single rotating frame.

[0050] Step 2: Installation of the support frame structure. Multiple rotating frames 4 with filter cloth 3 assembled are connected in series through transmission rod 5, so that the toothed rings 6 at both ends of the transmission rod 5 are aligned with the lower toothed grooves 14 on the inner wall of the sub-frame 1, and are inserted laterally and rolled to the preset position.

[0051] Step 3: Install sealing plate 13. Fix sealing plate 13 to the hollow structure at both ends of the longitudinal direction of the sub-frame 1 to complete the sealing of the filter area.

[0052] Step 4: Connect the main and auxiliary frames. Insert the plug plate 18 of the auxiliary frame 1 into the plug hole of the main frame 2 until the transmission rack 7 and the gear ring 6 are fully engaged, and complete the overall assembly.

[0053] The air intake area adjustment procedure is as follows:

[0054] When the density of impurities in the air is high, such as in foggy or dusty weather, and the air intake area needs to be reduced to improve filtration accuracy: Rotate the adjustment knob 11 clockwise to drive the rotating screw 10 to rotate, which drives the transmission rack 7 to move towards the sub-frame 1. The gear ring 6 drives the rotating frame 4 to rotate clockwise, the filter cloth 3 shrinks, and the air intake area is reduced.

[0055] When increased airflow is required, such as during high-speed driving or when there are many people in the vehicle: Rotate the adjusting knob 11 counterclockwise, the transmission rack 7 moves in the opposite direction, the rotating frame 4 rotates counterclockwise, the filter cloth 3 unfolds, and the air intake area increases.

[0056] In summary, this invention uses a mechanical transmission chain of "adjustment knob - rotating screw - transmission rack - gear ring - rotating frame" as its core, combined with structures such as thread self-locking, guide limit, and double meshing, which not only ensures the accuracy of air intake area adjustment, but also achieves stable locking under bumpy conditions.

[0057] On the other hand, the coordinated movement of the elastic filter cloth structure and the square rotating frame, as well as the sealing fit between the sealing plate and the frame, further optimize the rationality of movement and the filtration sealing performance.

[0058] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0059] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A vehicle air conditioning filter employing a three-dimensional support frame with a variable structure, comprising a sub-frame (1) and a main frame (2) that are interlocked, characterized in that, Both sides of the inner wall of the sub-frame (1) are equipped with a supporting frame structure through the lower tooth groove (14); The supporting frame structure includes a rotating frame (4) that is laterally rolled in the lower tooth groove (14). A transmission rod (5) is installed through the middle of the end side of each rotating frame (4). Both ends of the transmission rod (5) extending to the outside of the rotating frame (4) are fitted with toothed rings (6) that mesh with the lower tooth groove (14). A filter cloth (3) for air filtration is fitted together on the outside of several rotating frames (4). The main frame (2) is connected to the sub-frame (1) and is equipped with an adjustment component inside for supporting the adjustment of the air inlet area of ​​the skeleton structure.

2. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 1, characterized in that, The adjustment assembly includes a rotating screw (10) inserted longitudinally into the middle of one end of the main frame (2). The inner end of the rotating screw (10) is connected to a rotating bearing (12), and the rotating bearing (12) is connected to a pair of transmission racks (7) through a connecting rod (15).

3. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 2, characterized in that, A pair of the transmission racks (7) extend into the lower tooth groove (14) and mesh with the toothed ring (6), and the outer end of the rotating screw (10) extends to one end outside the main frame (2) and is fitted with an adjustment knob (11).

4. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 1, characterized in that, The filter cloth (3) is an elastic filter layer structure, and the filter cloth (3) is distributed around the frame structure surface of the rotating skeleton (4). Both ends of the filter cloth (3) are bonded to the frame structure surface of the rotating skeleton (4).

5. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 4, characterized in that, The rotating frame (4) is a square frame structure with both ends attached to the inner wall of the sub-frame (1), and each of the rotating frames (4) is symmetrically equipped with rivets (8) at the curved part of the filter cloth (3).

6. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 1, characterized in that, Both ends of the sub-frame (1) are hollow structures, and each of the sub-frames (1) is equipped with a sealing plate (13) corresponding to the hollow structure. The sub-frame (1) forms the air filtration / non-filtration areas on both sides of the air conditioner filter through the sealing plate (13) and the filter cloth (3).

7. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 3, characterized in that, The transmission rack (7) is connected to a guide rod (17) at one end away from the lower tooth groove (14). The main frame (2) is equipped with a guide ring plate (16) in the direction of the axis of the guide rod (17), and the main frame (2) is provided with a limit plate (9) along the moving direction of the transmission rack (7).

8. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 2, characterized in that, The sub-frame (1) is equipped with plug-in plates (16) on both sides of the end near the main frame (2). The main frame (2) has plug-in holes at the longitudinal position corresponding to the plug-in plates (16). The sub-frame (1) and the main frame (2) are connected by matching the plug-in plates (16) with the plug-in holes.

9. The automotive air conditioning filter with a variable structure and three-dimensional support frame as described in claim 8, characterized in that, The sub-frame (1) and the main frame (2) are detachably connected, and the rotating bearing (12) and the connecting rod (15) are detachably connected.

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