Quick dismounting structure for filter screen of subway air conditioner

Abstract

The utility model provides a quick dismounting structure for a filter screen of a subway air conditioner, which belongs to the technical field of subway air conditioners and comprises an air outlet frame, a gland, an elastic positioning piece and a separation blade. One end of the slot along the insertion direction of the filter screen is opened, and the other end of the slot is closed. The gland is hinged to the air outlet frame, and a hinged shaft is perpendicular to the insertion plane of the filter screen. The gland is used for sealing the opening end of the slot, so that the filter screen cannot be separated from the slot. The elastic positioning piece is arranged at the free end of the gland and has the elastic freedom degree of moving towards the gland. The blocking piece is fixedly arranged on the air outlet frame and located on the moving path of the elastic positioning piece turning over along with the gland. When the gland seals the open end of the slot, the elastic positioning piece abuts against the blocking piece so as to prevent the gland from turning over. According to the quick dismounting structure for the filter screen of the subway air conditioner, provided by the utility model, the filter screen on the air outlet frame can be conveniently and quickly dismounted.

Description

Technical Field

[0001] This utility model belongs to the field of subway air conditioning technology, and more specifically, it relates to a quick-release structure for subway air conditioning filters. Background Technology

[0002] During the daily operation of the subway, due to the complex and diverse external environment, a large amount of dust, microorganisms and various impurities are continuously drawn into the carriage through the air conditioning vents, thereby reducing the air freshness inside the carriage.

[0003] To address this issue, current subway air conditioning systems are equipped with filters at the air outlets. Their main function is to effectively intercept dust particles, microorganisms, and other impurities in the air, thereby ensuring that the air quality inside the carriages remains at a relatively good level. However, the existing installation structure of the subway air conditioning filters means that when removing the filters, workers must first remove the air outlet frame from the top of the carriage, and then further remove the pressure caps that are screwed onto the air outlet frame before finally pulling the filter out. The entire disassembly and assembly process is complex, increases the labor intensity of workers, and the frequent disassembly and assembly may also lead to the loss of parts. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-release structure for subway air conditioning filters, which facilitates the rapid disassembly of the filter on the air outlet frame.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a quick-release structure for a subway air conditioning filter, comprising:

[0006] An air outlet frame has a slot for inserting a filter screen, wherein one end of the slot is open and the other end is closed along the insertion direction of the filter screen;

[0007] A pressure cap is hinged to the air outlet frame, with the hinge axis perpendicular to the insertion plane of the filter screen; the pressure cap is used to close the opening end of the slot so that the filter screen cannot be removed from the slot;

[0008] An elastic positioning element is disposed at the free end of the pressure cap, the elastic positioning element having an elastic degree of freedom to move toward the pressure cap; and

[0009] The baffle is fixedly mounted on the air outlet frame and is located on the moving path of the elastic positioning member as the pressure cover flips.

[0010] When the pressure cap closes the opening end of the slot, the elastic positioning member abuts against the baffle to prevent the pressure cap from flipping over.

[0011] In one possible implementation, a connecting post is fixedly disposed at the free end of the gland, and the elastic positioning element includes:

[0012] The positioning block is slidably sleeved on the connecting post, and its direction of movement is coplanar with the plane where the pressure cap is located;

[0013] The first spring is fixed at both ends to the pressure cap and the positioning block respectively, and is sleeved on the connecting post;

[0014] The positioning block can move to a first position to avoid the baffle, and can also move to a second position to abut against the baffle. When the first spring is in its natural state, the positioning block is located in the second position.

[0015] In one possible implementation, the connecting post is a square post, and the positioning block has a square hole through which the connecting post passes.

[0016] In one possible implementation, the baffle has a guide ramp, and when the cap rotates toward closing the slot, the positioning block abuts against the guide ramp and moves from the second position to the first position.

[0017] In one possible implementation, a limiting part for blocking the positioning block is fixedly provided on the connecting column, and the positioning block is located in the second position when it abuts against the limiting part.

[0018] In one possible implementation, the air outlet frame is provided with an ejection assembly for ejecting the filter from the slot.

[0019] In one possible implementation, the eject component includes:

[0020] An elastic ejector is slidably disposed in the slot and has an elastic degree of freedom to move toward the open end of the slot;

[0021] An elastic locking member is fixedly mounted on the elastic ejector and has an elastic degree of freedom to move toward the air outlet frame;

[0022] When the filter screen is inserted into the slot, the elastic ejector abuts against the closed end of the slot, and the elastic locking member engages with the air outlet frame.

[0023] In one possible implementation, a sleeve is fixedly mounted on the air outlet frame, the axial direction of the sleeve is the same as the insertion direction of the filter screen, and a connecting rod is slidably mounted on the sleeve along the axial direction, the connecting rod being fixed to the elastic ejector.

[0024] In one possible implementation, the resilient ejector includes:

[0025] The top plate is slidably disposed in the slot along the insertion direction of the filter screen, and both ends extend outward through the slot in a direction perpendicular to the sliding direction of the top plate to form an extension, the extension being fixed to the connecting rod;

[0026] The second spring is fixed at both ends to the connecting rod and the sleeve, respectively, and is sleeved on the connecting rod.

[0027] In one possible implementation, the resilient locking element includes:

[0028] The lock housing is fixedly mounted on the elastic ejector.

[0029] The locking block is slidably disposed on the lock housing, and its moving direction is perpendicular to the moving direction of the elastic ejector.

[0030] The third spring is fixed at both ends to the lock housing and the lock block respectively, and is sleeved on the lock block;

[0031] The air outlet frame has a slot suitable for engaging with the locking block. When the filter is inserted into the slot, the locking block engages with the slot.

[0032] This utility model provides a quick-release structure for subway air conditioning filters. Compared with existing technologies, its advantages are as follows: When the filter needs to be removed, the operator only needs to press the elastic positioning piece to disengage it from the baffle, releasing the restriction on the rotation of the cover. Then, the cover can be flipped open around the hinge shaft, and the filter can be directly pulled out of the slot without removing screws, reducing the risk of losing parts. When installing the filter, first insert the filter into the slot opening until it abuts against the slot closing end. Then, rotate the cover to close the slot opening, so that the elastic positioning piece abuts against the baffle under its own elasticity, locking the cover and completing the filter installation. The installation process is simple and convenient, without the need for alignment and tightening screws as in traditional methods. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the overall structure of the quick-release structure for subway air conditioning filters provided in this embodiment of the utility model;

[0035] Figure 2 Another angle schematic diagram of the overall structure of the quick-release structure for subway air conditioning filters provided in this embodiment of the utility model;

[0036] Figure 3 for Figure 1 A magnified structural diagram of part A in the middle;

[0037] Figure 4 for Figure 2 A magnified structural diagram of part B.

[0038] In the diagram: 1. Air outlet frame; 11. Slot; 12. Baffle; 121. Guide slope; 13. Sleeve; 14. Connecting rod; 2. Cover; 21. Connecting post; 22. Limiting part; 31. Positioning block; 32. First spring; 41. Top plate; 411. Extension part; 42. Second spring; 51. Lock case; 52. Lock block; 53. Third spring. Detailed Implementation

[0039] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0040] Please see Figure 1 , Figure 2 and Figure 3 This invention provides a quick-release structure for a subway air conditioning filter. The quick-release structure includes an air outlet frame 1, a pressure cap 2, an elastic positioning member, and a baffle 12. The air outlet frame 1 has a slot 11 for inserting the filter, with one end open and the other closed along the filter insertion direction. The pressure cap 2 is hinged to the air outlet frame 1, with the hinge axis perpendicular to the filter insertion plane. The pressure cap 2 closes the open end of the slot 11, preventing the filter from being removed. The elastic positioning member is located at the free end of the pressure cap 2, possessing an elastic degree of freedom to move towards the pressure cap 2. The baffle 12 is fixedly mounted on the air outlet frame 1 and positioned along the movement path of the elastic positioning member as the pressure cap 2 flips. When the pressure cap 2 closes the open end of the slot 11, the elastic positioning member abuts against the baffle 12 to prevent the pressure cap 2 from flipping.

[0041] The air outlet frame 1 has a slot 11 for direct insertion of the filter screen, and the pressure cover 2 is hinged to the air outlet frame 1. During installation, after inserting the filter screen into the slot 11, the pressure cover 2 is rotated to close the opening end of the slot 11. During disassembly, the locking of the elastic positioning element and the baffle 12 is released, and the pressure cover 2 is flipped open to pull out the filter screen. This greatly simplifies the operation process, significantly reduces the labor intensity of the staff, improves the efficiency of filter screen replacement, and reduces the time occupied by complex disassembly and assembly for subway operation and maintenance.

[0042] In some embodiments, see Figure 3 A connecting post 21 is fixedly installed at the free end of the pressure cap 2. The elastic positioning element includes a positioning block 31 and a first spring 32. The positioning block 31 is slidably sleeved on the connecting post 21, and its direction of movement is coplanar with the plane where the pressure cap 2 is located. The two ends of the first spring 32 are fixed to the pressure cap 2 and the positioning block 31 respectively, and are sleeved on the connecting post 21. The positioning block 31 can move to a first position to avoid the baffle 12, and can also move to a second position to abut against the baffle 12. When the first spring 32 is in its natural state, the positioning block 31 is located in the second position.

[0043] Specifically, the positioning block 31 moves towards the pressure cover 2 to move to the first position, and the positioning block 31 moves away from the pressure cover 2 to move to the second position.

[0044] When the cover 2 rotates to close the slot 11, the positioning block 31 can slide on the connecting post 21 and stably abut against the baffle 12 under the action of the first spring 32, thus achieving reliable locking of the cover 2. When disassembly is required, push the positioning block 31 to overcome the elastic force of the first spring 32 and move it to the first position to avoid the baffle 12, and the cover 2 can be opened.

[0045] In some embodiments, see Figure 3 The connecting post 21 is a square post, and the positioning block 31 has a square hole for the connecting post 21 to pass through, so that the positioning block 31 can only slide in a specific direction on the connecting post 21, which prevents the positioning block 31 from rotating on the connecting post 21, and also prevents the positioning block 31 from shaking or shifting in other directions.

[0046] In some embodiments, see Figure 3The baffle 12 has a guide slope 121. When the cover 2 rotates toward the closing slot 11, the positioning block 31 abuts against the guide slope 121 and moves from the second position to the first position. The guide slope 121 of the baffle 12 guides the positioning block 31 during the closing process of the cover 2. When the cover 2 rotates toward the closing slot 11, the positioning block 31 abuts against the guide slope 121. As the cover 2 rotates, the positioning block 31 moves from the second position to the first position under the action of the guide slope 121, compressing the first spring 32. When the cover 2 completely closes the opening of the slot 11, the positioning block 31 returns to the second position under the elastic force of the first spring 32 and abuts against and locks against the baffle 12.

[0047] In some embodiments, see Figure 3 A limiting part 22 is fixedly provided on the connecting post 21 to block the positioning block 31. When the positioning block 31 abuts against the limiting part 22, the positioning block 31 is in the second position. The limiting part 22 on the connecting post 21 can precisely control the movement range of the positioning block 31 on the connecting post 21. When the positioning block 31 abuts against the limiting part 22, the positioning block 31 is in the second position, that is, the locked position that stably abuts against the baffle 12. During installation and use, the limiting part 22 ensures that the positioning block 31 will not move excessively due to changes in the elastic force of the first spring 32 or other external forces, and always remains in the correct locked position, ensuring the stable locking of the pressure cap 2 and improving the reliability of the filter installation.

[0048] Meanwhile, during disassembly, the operator can more intuitively judge whether the positioning block 31 is in a normal locked state based on the position of the limiting part 22, and whether it has moved to the first position when pushing the positioning block 31, which facilitates operation, reduces operational errors caused by misjudgment, and improves the efficiency of filter screen disassembly.

[0049] In some embodiments, the air outlet frame 1 is provided with an ejector assembly for ejecting the filter screen from the slot 11. When the filter screen needs to be removed, the ejector assembly can automatically eject a portion of the filter screen from the slot 11, making it convenient for staff to grab and pull out the filter screen. This avoids the inconvenience of staff having to manually reach deep into the slot 11 to pry out the filter screen in the traditional method. Especially when the slot 11 is deep or space is limited, the ejector assembly greatly improves the convenience of filter screen removal, reduces the difficulty and labor intensity of staff, and further improves the efficiency of filter screen replacement.

[0050] Specifically, the ejection assembly includes a resilient ejector and a resilient locking member. The resilient ejector is slidably disposed within the slot 11 and has an elastic degree of freedom to move toward the open end of the slot 11. The resilient locking member is fixedly disposed on the resilient ejector and has an elastic degree of freedom to move toward the air outlet frame 1. When the filter is inserted into the slot 11, the resilient ejector abuts against the closed end of the slot 11, and the resilient locking member engages with the air outlet frame 1. When disassembly is required, the resilient locking member is operated to release the engagement, and the resilient ejector, under its own elastic force, can eject the filter, thereby improving the overall performance and reliability of the quick-release filter structure.

[0051] In some embodiments, see Figure 4 A sleeve 13 is fixedly installed on the air outlet frame 1. The axial direction of the sleeve 13 is the same as the insertion direction of the filter screen. A connecting rod 14 is slidably installed on the sleeve 13 along the axial direction. The connecting rod 14 is fixed to the elastic ejector.

[0052] When the elastic ejector is triggered, the connecting rod 14 slides inside the sleeve 13, stably transmitting the elastic force to the elastic ejector, enabling it to smoothly eject the filter screen from the slot 11. This avoids uneven ejection or jamming of the filter screen due to unstable force transmission, ensuring the smoothness of the ejection process.

[0053] In some embodiments, see Figure 4 The elastic ejector includes a top plate 41 and a second spring 42. The top plate 41 is slidably disposed in the slot 11 along the insertion direction of the filter screen, and both ends extend outwards through the slot 11 in a direction perpendicular to the sliding direction of the top plate 41, forming extensions 411. The extensions 411 are fixed to the connecting rod 14. The second spring 42 is fixed at both ends to the connecting rod 14 and the sleeve 13, respectively, and is sleeved on the connecting rod 14.

[0054] After the elastic locking element is released, the second spring 42 contracts, causing the connecting rod 14 to move. The connecting rod 14 drives the top plate 41 to move through the extension 411, thereby causing the top plate 41 to move along the slot 11. During the movement, the top plate 41 pushes the filter screen out of the slot 11.

[0055] In some embodiments, see Figure 4 The elastic locking component includes a lock housing 51, a locking block 52, and a third spring 53. The lock housing 51 is fixedly mounted on the elastic ejector. The locking block 52 is slidably mounted on the lock housing 51, and its movement direction is perpendicular to the movement direction of the elastic ejector. The third spring 53 is fixed at both ends to the lock housing 51 and the locking block 52, respectively, and is sleeved on the locking block 52. A slot is provided on the air outlet frame 1 to engage with the locking block 52. When the filter screen is inserted into the slot 11, the locking block 52 engages with the slot.

[0056] During filter installation, the locking block 52 engages with the slot on the air outlet frame 1 under the action of the third spring 53, locking the elastic ejector and preventing the filter from accidentally popping out. When the filter needs to be removed, simply apply a certain external force to overcome the elastic force of the third spring 53, causing the locking block 52 to disengage from the slot, thus unlocking the elastic ejector and allowing the filter to be removed.

[0057] In summary, the quick-release structure for a subway air conditioning filter provided by this utility model, compared with the prior art, allows workers to easily remove the filter by simply pressing the elastic positioning member to disengage it from the baffle 12, thus releasing the restriction on the rotation of the cover 2. Then, the cover 2 can be flipped open around the hinge axis to directly pull the filter out of the slot 11 without removing screws, reducing the risk of losing parts. When installing the filter, first insert it into the open end of the slot 11 until it abuts against the closed end. Then, rotate the cover 2 to close the open end of the slot 11, allowing the elastic positioning member to abut against the baffle 12 under its own elasticity, locking the cover 2 and completing the filter installation. The installation process is simple and convenient, eliminating the need for alignment and screw tightening as in traditional methods.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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. A quick-release structure for a subway air conditioner filter, characterized in that, include: The air outlet frame (1) has a slot (11) for inserting a filter screen, wherein one end of the slot (11) is open and the other end is closed along the insertion direction of the filter screen; A pressure cap (2) is hinged to the air outlet frame (1), and the hinge axis is perpendicular to the insertion plane of the filter screen; the pressure cap (2) is used to close the opening end of the slot (11) so that the filter screen cannot be removed from the slot (11); An elastic positioning element is disposed at the free end of the pressure cap (2), the elastic positioning element having an elastic degree of freedom to move toward the pressure cap (2); and The baffle (12) is fixedly installed on the air outlet frame (1) and is located on the moving path of the elastic positioning member as the cover (2) flips; When the pressure cap (2) closes the opening end of the slot (11), the elastic positioning member abuts against the baffle (12) to prevent the pressure cap (2) from flipping over.

2. The quick-release structure for a subway air conditioning filter as described in claim 1, characterized in that, The free end of the pressure cap (2) is fixedly provided with a connecting post (21), and the elastic positioning element includes: The positioning block (31) is slidably sleeved on the connecting column (21), and its moving direction is coplanar with the plane where the pressure cap (2) is located; The first spring (32) is fixed at both ends to the pressure cap (2) and the positioning block (31) respectively, and is sleeved on the connecting post (21); The positioning block (31) can move to a first position to avoid the baffle (12) and can also move to a second position to abut against the baffle (12). When the first spring (32) is in its natural state, the positioning block (31) is located in the second position.

3. The quick-release structure for a subway air conditioning filter as described in claim 2, characterized in that, The connecting post (21) is a square post, and the positioning block (31) has a square hole through which the connecting post (21) passes.

4. The quick-release structure for a subway air conditioner filter as described in claim 2, characterized in that, The baffle (12) has a guide slope (121), and when the cover (2) rotates in the direction of closing the slot (11), the positioning block (31) abuts against the guide slope (121) and moves from the second position to the first position.

5. The quick-release structure for a subway air conditioner filter as described in claim 2, characterized in that, A limiting part (22) for blocking the positioning block (31) is fixedly provided on the connecting column (21). When the positioning block (31) abuts against the limiting part (22), the positioning block (31) is located in the second position.

6. The quick-release structure for a subway air conditioning filter as described in claim 1, characterized in that, The air outlet frame (1) is provided with an ejection assembly for ejecting the filter screen from the slot (11).

7. The quick-release structure for a subway air conditioning filter as described in claim 6, characterized in that, The ejection component includes: The elastic ejector is slidably disposed in the slot (11) and has an elastic degree of freedom to move toward the open end of the slot (11); An elastic locking member is fixedly mounted on the elastic ejector and has an elastic degree of freedom to move toward the air outlet frame (1). When the filter is inserted into the slot (11), the elastic ejector abuts against the closed end of the slot (11), and the elastic locking member engages with the air outlet frame (1).

8. The quick-release structure for a subway air conditioner filter as described in claim 7, characterized in that, A sleeve (13) is fixedly installed on the air outlet frame (1). The axial direction of the sleeve (13) is the same as the insertion direction of the filter screen. A connecting rod (14) is slidably installed on the sleeve (13) along the axial direction. The connecting rod (14) is fixed to the elastic ejector.

9. A quick-release structure for a subway air conditioning filter as described in claim 8, characterized in that, The elastic ejector includes: The top plate (41) is slidably disposed in the slot (11) along the insertion direction of the filter screen, and both ends extend outward through the slot (11) in a direction perpendicular to the sliding direction of the top plate (41) to form an extension (411), the extension (411) being fixed to the connecting rod (14); The second spring (42) is fixed at both ends to the connecting rod (14) and the sleeve (13) respectively, and is sleeved on the connecting rod (14).

10. A quick-release structure for a subway air conditioning filter as described in claim 7, characterized in that, The elastic locking element includes: Lock housing (51) is fixedly mounted on the elastic ejector; The locking block (52) is slidably disposed on the lock housing (51), and its moving direction is perpendicular to the moving direction of the elastic ejector. The third spring (53) is fixed at both ends to the lock housing (51) and the lock block (52) respectively, and is sleeved on the lock block (52); The air outlet frame (1) is provided with a slot suitable for engaging with the locking block (52). When the filter screen is inserted into the slot (11), the locking block (52) engages with the slot.

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