Cover plate fastener for air filter element

Abstract

The utility model discloses a cover plate fastener for an air filter element. The cover plate fastener comprises a fastening disc and a screw joint piece, the fastening disc is provided with a connecting hole matched with a central rod of the air filter element, one end of the connecting hole extends out of a concentric connecting sleeve, the connecting sleeve is provided with a plurality of slots at intervals, the end part of the connecting hole is provided with a limiting step, and the limiting step and the fastening disc form an annular slot matched with a filter element cover plate; the screwing piece is fixed in the connecting hole, and a screw hole in threaded connection with the center rod is formed in the screwing piece. According to the fastener, a traditional connection mode that a nut and a cover plate are separated is abandoned, the screwing piece is fixed to the fastening disc, the filter element cover plate is directly connected through the annular groove, nut loss is avoided, and maintenance cost and time loss are reduced; meanwhile, the disassembly and assembly steps of the air filter element cover plate and the center rod are simplified, the disassembly and assembly efficiency is remarkably improved, equipment maintenance is facilitated, and the advantages of being ingenious in structure and high in practicability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of air filter technology, specifically to a cover plate fastener for air filters. Background Technology

[0002] In fields such as automotive engines and industrial machinery, air filters are critical components ensuring the normal operation of equipment. They effectively filter impurities in the air, preventing dust, particles, and other foreign objects from entering the equipment and avoiding wear and damage to core components. The connection structure between the air filter's cover and center rod directly affects the filter's overall stability, sealing performance, and ease of maintenance.

[0003] Currently, most air filter elements on the market use nuts to connect the cover plate and the center rod, as exemplified by a filter element disclosed in application number CN201820991396.4. This connection method leaves the nut and cover plate separate, revealing several drawbacks in practical use. Firstly, the nut is easily lost during disassembly and assembly, requiring the search for a matching nut during subsequent reassembly, increasing maintenance and time costs. Secondly, during assembly, operators must first fit the cover plate onto the center rod before securing it with the nut; disassembly requires loosening the nut before removing the cover plate, making the process cumbersome and significantly reducing the efficiency of air filter assembly and disassembly, thus inconveniencing equipment maintenance. Therefore, there is an urgent need to design a new cover plate fastener for air filters to address the aforementioned problems in the existing technology. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a cover plate fastener for air filter elements.

[0005] The technical solution adopted by this utility model is: a cover plate fastener for an air filter element, including a fastening disc and a screw connector. The fastening disc is provided with a connecting hole for connecting and cooperating with the center rod of the air filter element. A connecting sleeve extends from one end of the connecting hole. The connecting sleeve is concentrically arranged with the connecting hole. Several slots are provided at intervals on the connecting sleeve. A limiting step is provided at the end of the connecting hole. An annular groove for connecting the filter element cover plate is formed between the limiting step and the fastening disc. The spacing of the annular groove is adapted to the wall thickness at the mounting hole of the fastening disc.

[0006] The screw connector is fixed inside the connecting hole, and the screw connector has a screw hole for threaded connection of the central rod.

[0007] Furthermore, the outer edge of the limiting step is provided with an inlet ramp.

[0008] Furthermore, a sleeve extends from the end face of the fastening disc away from the connecting sleeve, and "I"-shaped handles extend from both sides of the sleeve toward the outer ring of the fastening disc.

[0009] Furthermore, the fastening disc, connecting sleeve, sleeve, and flat handle are integrally molded from plastic, while the screw connectors are made of metal.

[0010] Furthermore, there are four slots, which are equally spaced on the connecting sleeve, and the length of the slots is 2 / 5 to 3 / 4 of the length of the connecting sleeve.

[0011] The beneficial effects of this utility model are:

[0012] First, by fixing the screw fitting into the connecting hole of the fastening disc, and the annular groove on the fastening disc can be directly connected and fitted with the filter element cover, the traditional connection method of separating the nut and the cover is eliminated, effectively avoiding the problem of losing the nut during disassembly and assembly, and reducing the additional maintenance costs and time loss caused by the loss of the nut.

[0013] Second, the annular groove on the fastening disc can directly connect and cooperate with the filter cover plate. During assembly, there is no need to first install the cover plate and then fix the nut as in the traditional method. During disassembly, there is no need for step-by-step operation, which greatly simplifies the disassembly and assembly steps between the air filter cover plate and the center rod, significantly improves the disassembly and assembly efficiency, and facilitates the maintenance of the equipment.

[0014] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram from another side view of the present invention.

[0017] Figure 3 This is a schematic diagram showing the connection between the present invention and the filter element cover.

[0018] Figure 4 This is a schematic diagram of the filter element cover.

[0019] Figure 1-4 In the middle: 1. Fastening disc; 2. Screw connector; 3. Connecting hole; 4. Connecting sleeve; 5. Groove; 6. Limiting step; 7. Filter cover plate; 8. Circular groove; 9. Screw hole; 10. Guide slope; 11. Sleeve; 12. "I" handle. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] This utility model provides a cover plate fastener for an air filter element.

[0023] In this embodiment, refer to Figure 1-4 The air filter cover fastener includes a fastening disc 1 and a screw connector 2. The fastening disc is provided with a connecting hole 3 for connecting and engaging with the center rod of the air filter. A connecting sleeve 4 extends from one end of the connecting hole 3. The connecting sleeve 4 is concentric with the connecting hole. A plurality of slots 5 are provided on the connecting sleeve 4 at intervals. A limiting step 6 is provided at the end of the connecting hole. An annular groove 8 for connecting the filter cover 7 is formed between the limiting step 6 and the fastening disc. The spacing of the annular groove 8 is adapted to the wall thickness at the mounting hole of the fastening disc.

[0024] The screw connector is fixed inside the connecting hole, and the screw connector is provided with a screw hole 9 for threaded connection of the central rod.

[0025] In the above technical solution, the connecting hole on the fastening disc mates with the central rod of the air filter element. The slot on the connecting sleeve makes it elastic, allowing it to expand or contract. Therefore, when the filter element cover is connected to the annular groove, it can contract; after the filter element cover is fully installed, it expands to connect the filter element cover into the annular groove. The wall thickness of the annular groove matches the mounting hole of the filter element cover, achieving a tight connection. The screw connector is threaded to the central rod, fixing the cover to the central rod.

[0026] This application replaces the traditional nut and directly connects the fastening disc to the filter element cover. In addition, it can be removed from the filter element cover for replacement after damage, realizing a reliable connection between the cover and the center rod. It also avoids the problem of easy nut loss in the traditional nut connection method, simplifies the disassembly and assembly steps, and improves work efficiency.

[0027] Specifically, the outer edge of the limiting step is provided with an inlet ramp 10.

[0028] In this embodiment, the guide slope of the outer edge of the limiting step is at a certain angle, which guides the filter cover plate smoothly into the annular groove during installation, thus playing a guiding role. This reduces the difficulty of installation, minimizes damage to parts during installation, and improves installation efficiency and accuracy.

[0029] Specifically, a sleeve 11 extends from the end face of the fastening disc away from the connecting sleeve, and "I"-shaped handles 12 extend from both sides of the sleeve 11 toward the outer ring of the fastening disc.

[0030] In this embodiment, the sleeve provides support for the "I"-shaped handle. The operator can apply torque by gripping the handle, causing the fastening disc to rotate via leverage, thereby achieving threaded connection or disassembly with the central rod. No additional tools are required, making operation more convenient and labor-saving, improving assembly and disassembly efficiency, and reducing labor intensity.

[0031] Specifically, the fastening disc, connecting sleeve, sleeve, and "I" handle are integrally molded from plastic, while the screw connectors are made of metal.

[0032] In this embodiment, the one-piece molded structure made of plastic is lightweight, low-cost, and possesses a certain degree of elasticity and corrosion resistance; the metal screw connectors ensure the strength and reliability of the threaded connection. While maintaining product performance, this reduces production costs and weight, and extends the product's service life.

[0033] Specifically, there are four slots, which are equally spaced on the connecting sleeve, and the length of the slots is 2 / 5 to 3 / 4 of the length of the connecting sleeve.

[0034] In this embodiment, the four equally spaced slots give the connecting sleeve uniform elasticity. The slot length is between 3 / 4 and 2 / 5 of the connecting sleeve length, ensuring that the connecting sleeve has both sufficient elasticity and a certain strength.

[0035] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A cover plate fastener for an air filter element, characterized in that: The device includes a fastening disc and a screw connector. The fastening disc has a connecting hole for connecting with the center rod of the air filter element. A connecting sleeve extends from one end of the connecting hole. The connecting sleeve is concentric with the connecting hole and has several slots spaced apart. A limiting step is provided at the end of the connecting hole. An annular groove for connecting the filter element cover is formed between the limiting step and the fastening disc. The spacing of the annular groove is adapted to the wall thickness at the mounting hole of the fastening disc. The screw connector is fixed inside the connecting hole, and the screw connector has a screw hole for threaded connection of the central rod.

2. The air filter cover fastener according to claim 1, characterized in that: The outer edge of the limiting step is provided with an inlet ramp.

3. The air filter cover fastener according to claim 1, characterized in that: A sleeve extends from the end face of the fastening disc away from the connecting sleeve, and "I"-shaped handles extend from both sides of the sleeve toward the outer ring of the fastening disc.

4. The air filter cover fastener according to claim 3, characterized in that: The fastening disc, connecting sleeve, sleeve, and "I" handle are integrally molded from plastic, while the screw connectors are made of metal.

5. The air filter cover fastener according to claim 1, characterized in that: The slots are four in number, evenly spaced on the connecting sleeve, and the length of the slots is 2 / 5 to 3 / 4 of the length of the connecting sleeve.

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