An infrared atomizer for hair dryer and precise air guide

Abstract

The utility model discloses an infrared atomizer for blowing fan and accurate air guide, including detachable installation on the blowing fan atomizer main part, and detachable installation on the atomizer main part oil storage, atomizer main part includes detachable installation on the blowing fan main body back cover, set up on the main body back cover main body front cover to and set up between the main body front cover and main body back cover one atomization piece, the main body back cover and the main body front cover between the penetration formation has a plurality of outer ring air duct, the atomizer main part and the oil storage form the ventilation gap, and the main body front cover forms the inner ring air duct that is just for the atomization piece outside and is communicated with the ventilation gap, the main body front cover just for the position of atomization piece forms the atomization air duct. The utility model atomizes hair care essential oil and lets the wind that blows accurate take atomization hair care essential oil and export, makes hair care essential oil can be attached to the hair and the scalp even quickly, need not dirty the hand, still can be freely detached, satisfies different use demand.

Description

Technical Field

[0001] This utility model relates to the field of hair dryer technology, and in particular to an infrared atomizer for use in hair dryers that precisely guides airflow. Background Technology

[0002] Hair dryers are a common household appliance used to quickly dry wet hair, making life more convenient. However, because the air from hair dryers can sometimes be too hot, it can cause damage to the user's hair.

[0003] While existing hair dryers all have temperature control, applying hair oil still requires hand application. This method is inconvenient, inefficient, and often results in uneven oil distribution, leaving hair feeling greasy. To address this, atomizers have appeared on hair dryers to atomize the hair oil and apply it directly to the hair. However, while this solves the problem of hand application, the atomizer can obstruct the airflow, causing a change in airflow direction and making it difficult to precisely deliver the atomized oil to the intended areas of the hair. This makes it inconvenient to use and negatively impacts the user experience. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide an infrared atomizer for use in hair dryers that precisely guides airflow. This atomizes hair care oil efficiently and precisely carries the atomized hair care oil out of the hair dryer, allowing the hair care oil to quickly and evenly adhere to the hair and scalp for easy absorption. It eliminates the need to get hands dirty, improving the user experience. Furthermore, it can be easily detached from the hair dryer to meet the needs of different users.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows: An infrared atomizer for precise airflow guidance in a hair dryer includes an atomizer body detachably mounted on the hair dryer and an oil reservoir detachably mounted on the atomizer body. The atomizer body includes a rear cover detachably mounted on the hair dryer, a front cover disposed on the rear cover, and an atomizing plate disposed between the front cover and the rear cover. Several outer ring air channels are formed through the rear cover and the front cover to allow air from the hair dryer to escape. A ventilation gap is formed between the atomizer body and the oil reservoir. An inner ring air channel is formed on the front cover, facing the outer side of the atomizing plate and communicating with the ventilation gap. An atomizing air channel is formed on the front cover, directly opposite the atomizing plate.

[0006] As a further improvement of this utility model, the lower end of the ventilation gap is connected to the lower end of the outer ring air duct.

[0007] As a further improvement of this utility model, the lower end face of the rear cover of the main body is formed with an inwardly recessed wind direction guide surface.

[0008] As a further improvement of this utility model, the ventilation gap is generally inclined in the direction of converging towards the center.

[0009] As a further improvement of this utility model, the atomizer body also includes a PCB board disposed between the front cover and the rear cover of the body, at least one battery disposed on the rear cover of the body and electrically connected to the PCB board, at least one main magnet disposed on the rear cover of the body near the oil storage tank, and a magnetic ring disposed in the rear cover of the body and magnetically adsorbed onto the hair dryer.

[0010] As a further improvement of this utility model, the PCB board is provided with at least one infrared lamp that shines outward.

[0011] As a further improvement of this utility model, the atomizer body also includes a button disposed on the front cover of the body and electrically connected to the PCB board, and a charging port disposed on the front cover of the body and electrically connected to the PCB board.

[0012] As a further improvement of this utility model, the oil storage tank includes an oil storage front cover embedded in the rear cover of the main body, at least one oil storage magnet disposed at one end of the oil storage front cover near the rear cover of the main body and magnetically attracted to the magnet of the main body, an oil storage rear cover disposed on the oil storage front cover, an oil storage fiber rod disposed between the oil storage front cover and the oil storage rear cover, and an oil storage cotton disposed at one end of the oil storage fiber rod near the oil storage front cover. An oil storage cavity for oil storage is formed between the oil storage front cover and the oil storage rear cover.

[0013] As a further improvement of this utility model, an oil filling port is provided on the oil storage front cover, and an oil filling port cover is provided with an oil filling sealing silicone.

[0014] As a further improvement of this utility model, a front cover fixing boss is formed in the middle of the oil storage front cover, extending towards the oil storage rear cover and fixing one end of the oil storage fiber rod; a rear cover fixing boss is formed in the middle of the oil storage rear cover, extending towards the oil storage front cover and fixing the other end of the oil storage fiber rod; the oil storage tank also includes a compression spring with one end pressing against the rear cover fixing boss and the other end pressing against the oil storage cotton.

[0015] The beneficial effects of this utility model are as follows: This infrared atomizer comprises an atomizer body detachably mounted on a hair dryer and an oil reservoir detachably mounted on the atomizer body. The atomizer body includes a rear cover detachably mounted on the hair dryer, a front cover mounted on the rear cover, and an atomizing plate positioned between the front and rear covers. Several outer ring air channels are formed between the rear and front covers to allow air from the hair dryer to escape. A ventilation gap is formed between the atomizer body and the oil reservoir. An inner ring air channel is formed on the front cover, facing the outer side of the atomizing plate and communicating with the ventilation gap. An atomizing air channel is formed on the front cover, directly opposite the atomizing plate. This infrared atomizer body can be freely installed and removed from the hair dryer to meet the needs of different users. The oil reservoir is magnetically attached to the atomizer body, facilitating easy installation and removal for adding essential oils. The entire process is simple and convenient, requiring no multiple screws or disassembly steps, thus improving the user experience. A portion of the air generated by the hair dryer is blown outward through the vertically penetrating outer ring air duct, while another portion of the air enters the atomizing plate through the ventilation gap. The portion near the outer side of the atomizing plate blows the atomized hair oil from the outer side of the atomizing plate vertically outward through the inner ring air duct, while the portion near the middle of the atomizing plate blows the atomized hair oil from the middle of the atomizing plate vertically outward through the atomizing air duct. Because the atomizing air duct is located in the middle of the front cover and is vertical, the airflow is concentrated towards the center, achieving precise airflow guidance. This allows the atomized hair oil to be accurately and concentratedly blown onto the scalp and hair for absorption. Furthermore, combined with the airflow from the outer ring air duct, the airflow can be blown out from multiple angles, making it easier for users and improving the efficiency of hair drying.

[0016] The above is an overview of the utility model's technical solution. The following description, in conjunction with the accompanying drawings and specific embodiments, will further illustrate the utility model. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the air duct for the air outlet of this utility model; Figure 4 Exploded view of the atomizer body and oil reservoir; Figure 5 Another exploded view of the atomizer body and the oil reservoir; Figure 6 An exploded view of the atomizing entity; Figure 7 This is an exploded view of the oil storage tank; In the diagram: 1. Atomizer body; 101. Rear cover of the body; 1011. Airflow guide surface; 102. Front cover of the body; 1021. Atomizing air duct; 1022. Inner ring air duct; 103. PCB board; 104. Battery; 105. Atomizing plate; 106. Main magnet; 107. Infrared lamp; 108. Magnetic ring; 109. Outer ring air duct; 110. Button; 111. Charging port; 2. Oil reservoir; 21. Front cover of oil reservoir; 211. Filling port; 212. Front cover fixing boss; 22. Oil reservoir magnet; 23. Rear cover of oil reservoir; 231. Rear cover fixing boss; 24. Oil reservoir fiber rod; 25. Oil reservoir cotton; 26. Oil reservoir cavity; 27. Add sealing silicone; 28. Compression spring; 3. Ventilation gap. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods of this utility model will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0019] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please refer to Figures 1 to 7This utility model provides an infrared atomizer for use in a hair dryer with precise airflow guidance. It includes an atomizer body 1 detachably mounted on the hair dryer and an oil reservoir 2 detachably mounted on the atomizer body 1. The atomizer body 1 includes a rear cover 101 detachably mounted on the hair dryer, a front cover 102 disposed on the rear cover 101, and an atomizing plate 105 disposed between the front cover 102 and the rear cover 101. Several outer ring air channels 109 are formed between the rear cover 101 and the front cover 102 to allow air from the hair dryer to escape. A ventilation gap 3 is formed between the atomizer body 1 and the oil reservoir 2. An inner ring air channel 1022 is formed on the front cover 102, directly opposite the outer side of the atomizing plate 105 and communicating with the ventilation gap 3. An atomizing air channel 1021 is formed on the front cover 102 directly opposite the atomizing plate 105.

[0023] The infrared atomizer body 1 can be freely installed and removed from a hair dryer to meet the needs of different users. The oil reservoir 2 is magnetically attached to the atomizer body 1, facilitating easy installation and removal for adding hair oil. The entire process is simple and convenient, requiring no multiple screws or disassembly steps, thus improving the user experience. A portion of the air generated by the hair dryer passes through the vertically penetrating outer ring air duct 109 and is blown outwards. Another portion of the air generated by the hair dryer enters the atomizing plate 105 through the ventilation gap 3. The portion near the outer side of the atomizing plate 105 blows the atomized hair care oil from the outer side of the atomizing plate 105 vertically out through the inner ring air duct 1022, while the portion near the middle of the atomizing plate 105 blows the atomized hair care oil from the middle of the atomizing plate 105 vertically out through the atomizing air duct 1021. Since the atomizing air duct 1021 is located in the middle of the front cover 102 of the main body and is vertical, the air force in this portion is concentrated in the middle, achieving the purpose of precise air guiding. This facilitates the precise and concentrated blowing of the atomized hair care oil onto the scalp and hair for absorption. In addition, the air force emitted by the outer ring air duct 109 can be blown out from multiple angles, making it more convenient for users and improving the efficiency of hair drying. For the structure of the hair dryer, please refer to patent number 202421383256.0, patent number 2025209066012 and patent number 2025209073586. A hollow air duct is opened in the middle for air outlet, and the infrared atomizer is installed at the front end of the middle of the hollow air duct.

[0024] Preferably, to ensure that the air blown from the hair dryer enters the ventilation gap 3 more effectively, such as... Figure 2 and Figure 3As shown, the lower end of the ventilation gap 3 is connected to the lower end of the outer ring air duct 109, so that the air blown out of the hair dryer can better enter the ventilation gap 3 and then blow out the atomized hair care oil through the inner ring air duct 1022 and the atomizing air duct 1021. Only the ventilation gap 3 and the outer ring air duct 109 can circulate the air produced by the hair dryer, so that the air force is more concentrated and stronger, the drying effect is better, and the purpose of precise air guiding is achieved, which is conducive to the precise and concentrated blowing of the atomized hair care oil onto the scalp and hair for absorption.

[0025] Preferred, such as Figure 2 and Figure 3 as well as Figure 5 As shown, in order to further improve the airflow from the hair dryer into the ventilation gap 3, the lower end face of the main body back cover 101 has an inwardly recessed airflow guide surface 1011. When this infrared atomizer is installed in the hollow air duct of the hair dryer, it completely blocks the hollow air duct, so that the air generated by the hair dryer can only be blown outward through the outer ring air duct 109 and the ventilation gap 3. Furthermore, the airflow on the outer side of the hollow air duct of the hair dryer is guided by the tilting effect of the airflow guide surface 1011, making it easier to enter the outer ring air duct 109 and the ventilation gap 3, making the airflow more concentrated and stronger, resulting in a better drying effect. It also achieves the purpose of precise airflow guidance, which is conducive to the precise and concentrated blowing of the atomized hair care oil onto the scalp and hair for absorption.

[0026] Preferred, such as Figure 2 and Figure 3 As shown, in order to make the hair oil more accurately and concentratedly blown onto the scalp and hair for absorption after atomization, the ventilation gap 3 is generally inclined in the direction of upward and central convergence. This allows the air blown out from the ventilation gap 3 to carry the atomized hair oil towards the center under its inclined guiding structure, making the airflow more concentrated and stronger, resulting in better drying effect. It also achieves the purpose of precise air guidance, which is conducive to the atomized hair oil being accurately and concentratedly blown onto the scalp and hair for absorption.

[0027] For other structural features of the atomizer body 1, such as Figure 1 , Figures 4 to 6As shown, the atomizer body 1 also includes a PCB board 103 disposed between the front cover 102 and the rear cover 101, at least one battery 104 disposed on the rear cover 101 and electrically connected to the PCB board 103, at least one main magnet 106 disposed on the rear cover 101 near the oil reservoir 2, and a magnetic ring 108 encircling the rear cover 101 and magnetically adsorbed onto the hair dryer. The atomizing plate 105 is electrically connected to the PCB board 103. The oil reservoir 2 is magnetically adsorbed onto the main magnet 106, thereby facilitating free installation and removal from the atomizer body 1 for adding essential oil. The entire process is simple and convenient, requiring no multiple screw disassembly steps, thus improving the user experience. Furthermore, by setting a PCB board 103 between the front cover 102 and the rear cover 101 of the main body, and setting a battery 104 on the rear cover 101, the atomizing plate 105 is electrically connected to the PCB board 103. This allows the infrared atomizer to be used independently of the hair dryer, avoiding the common problem of atomizers and hair dryers having a conductive connection that suffers severe wear and tear over time, leading to subsequent unusability. The battery 104 provides power, and the PCB board 103 controls the atomizing plate 105 to atomize the hair care oil in the oil storage tank 2. Driven by the airflow of the hair dryer, the oil is then applied to the hair, allowing it to quickly and evenly adhere to the hair and scalp for easy absorption. This eliminates the need for messy hands and allows for hair conditioning while drying, improving the user experience. The atomizing plate 105 can be a ceramic atomizing plate, an ultrasonic atomizing plate, etc., and the specific type can be chosen according to the actual situation; therefore, no specific limitation is made in this embodiment. The hair dryer is equipped with a magnet or magnetic ring that matches the magnetic ring 108. The two are magnetically attracted to each other, allowing the infrared atomizer to be detachably installed on the hair dryer for use. After the infrared atomizer is removed, the hair dryer can be used independently, thus meeting the needs of different users. The magnetic attraction structure avoids the common problem of conductive connections between atomizers and hair dryers on the market, which leads to severe wear and tear of the conductive structure over time and subsequent unusability. This effectively improves the practicality of this infrared atomizer.

[0028] Preferred, such as Figure 2 and 6 As shown, in order to make the hair care oil more effective on the scalp and hair, the PCB board 103 is provided with at least one infrared lamp 107 that shines outward. The infrared lamp 107 irradiates the hair and scalp, thereby promoting vasodilation, improving the microenvironment of hair follicles, making the hair care effect better, and further improving the user experience of this infrared atomizer.

[0029] Regarding other structural features of the atomizer body 1, such as Figure 1 , Figures 4 to 6As shown, the atomizer body 1 also includes a button 110 disposed on the front cover 102 and electrically connected to the PCB board 103, and a charging port 111 disposed on the front cover 102 and electrically connected to the PCB board 103. The button 110 is used to control whether the atomizer body 1 is started and to select related modes. The charging port 111 is connected to the battery 104 through the PCB board 103, thereby realizing the charging of the battery 104 and enabling the independent use of the infrared atomizer. The charging port 111 can be a USB Type-C, Micro Type-B, or other interface, which can be set according to the actual situation, so no specific limitation is made in this embodiment.

[0030] Preferred, such as Figure 6 As shown, the battery 104 consists of two sets, which effectively increases the usage time of the atomizer body 1 and improves the practicality of the infrared atomizer.

[0031] Regarding the specific structural configuration of the oil storage tank 2, as follows: Figures 2 to 3 as well as Figure 7 As shown, the oil storage tank 2 includes an oil storage front cover 21 embedded in the main body rear cover 101, at least one oil storage magnet 22 disposed at one end of the oil storage front cover 21 near the main body rear cover 101 and magnetically adsorbed onto the main body magnet 106, an oil storage rear cover 23 disposed on the oil storage front cover 21, an oil storage fiber rod 24 disposed between the oil storage front cover 21 and the oil storage rear cover 23, and an oil storage cotton 25 disposed at one end of the oil storage fiber rod 24 near the oil storage front cover 21. An oil storage space is formed between the oil storage front cover 21 and the oil storage rear cover 23 for oil storage. The oil chamber 26 stores hair care oil and other essential oils, which are then absorbed and temporarily stored in the oil storage fiber bar 24. The oil storage cotton 25 absorbs the hair care oil temporarily stored on the oil storage fiber bar 24 onto itself. Because it is closer to the atomizing plate 105, the hair care oil on it is better atomized by the atomizing plate 105 and then blown out, improving the atomization efficiency of this infrared atomizer and preventing the problem that the hair care oil remains in the oil storage chamber 26 and cannot be atomized and blown out when the infrared atomizer is rotated with the hair dryer and the hair dryer nozzle is facing upward. By setting an oil storage magnet 22 on the rear cover 101 of the main body, the oil storage magnet 22 can be magnetically attracted to the main body magnet 106, thereby achieving the purpose of stably installing the oil storage tank 2 on the atomizer body 1. Furthermore, the magnetic attraction method makes it easy to remove the oil storage tank 2 from the atomizer body 1 for replenishing the hair care essential oil inside, which is convenient for users. The whole process is simple and convenient, without the need for multiple screw disassembly procedures, thus improving the user experience.

[0032] The specific method for replenishing hair care oil in the oil storage cavity 26 is as follows: Figure 4 as well as Figure 7As shown, the oil storage front cover 21 is provided with an addition port 211, and the addition port 211 is covered with an addition sealing silicone 27. Hair care essential oil flows into the oil storage cavity 26 through the addition port 211, and after replenishment, the addition port 211 is sealed with the addition sealing silicone 27, thereby sealing the oil storage cavity 26 and preventing the hair care essential oil from leaking out.

[0033] Regarding the specific method of fixing the oil-storing fiber rod 24 within the oil-storing cavity 26, as follows: Figure 2 and Figure 3 As shown, a front cover fixing boss 212 is formed in the middle of the oil storage front cover 21, extending towards the oil storage rear cover 23 and fixing one end of the oil storage fiber rod 24. A rear cover fixing boss 231 is formed in the middle of the oil storage rear cover 23, extending towards the oil storage front cover 21 and fixing the other end of the oil storage fiber rod 24. The front end of the oil storage fiber rod 24 is placed in the front cover fixing boss 212, and the rear end is placed in the rear cover fixing boss 231. The two cooperate with each other to fix the oil storage fiber rod 24 and prevent the oil storage fiber rod 24 from shifting during use, which would cause the hair care essential oil to fail to atomize properly.

[0034] Preferred, such as Figure 2 and Figure 3 as well as Figure 7 As shown, the oil storage tank 2 also includes a compression spring 28 with one end pressing against the rear cover fixing boss 231 and the other end pressing against the oil storage cotton 25. The compression spring 28 compresses the oil storage fiber rod 24, so that the hair care essential oil in the oil storage fiber rod 24 can better enter the oil storage cotton 25 for atomization, ensuring the normal operation of this infrared atomizer and improving the atomization efficiency.

[0035] It should be noted that the infrared atomizer for hair dryers with precise airflow disclosed in this utility model is an improvement on the specific structure, but the specific control method is not the innovation of this utility model. The hair care oil, battery, magnet, atomizing plate, PCB board, infrared lamp, and other components involved in this utility model can be general standard parts or components known to those skilled in the art. Their structure, principle, and control method are all known to those skilled in the art through technical manuals or conventional experimental methods.

[0036] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, other structures obtained by using the same or similar technical features as the above embodiments of the present utility model are all within the protection scope of the present utility model.

Claims

1. An infrared atomizer for use in a hair dryer and for precise airflow guidance, characterized in that: The device includes an atomizer body detachably mounted on a hair dryer and an oil reservoir detachably mounted on the atomizer body. The atomizer body includes a rear cover detachably mounted on the hair dryer, a front cover disposed on the rear cover, and an atomizing plate disposed between the front cover and the rear cover. Several outer ring air channels are formed between the rear cover and the front cover to allow air from the hair dryer to escape. A ventilation gap is formed between the atomizer body and the oil reservoir. An inner ring air channel is formed on the front cover, facing the outer side of the atomizing plate and communicating with the ventilation gap. An atomizing air channel is formed on the front cover, facing the atomizing plate.

2. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 1, characterized in that: The lower end of the ventilation gap is connected to the lower end of the outer ring air duct.

3. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 1, characterized in that: The lower end face of the main body rear cover has an inwardly recessed wind direction guide surface.

4. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 1, characterized in that: The ventilation gap has an overall inclined structure that converges towards the center.

5. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 1, characterized in that: The atomizer body also includes a PCB board disposed between the front cover and the rear cover, at least one battery disposed on the rear cover and electrically connected to the PCB board, at least one main magnet disposed on the rear cover near the oil reservoir, and a magnetic ring disposed inside the rear cover and magnetically attached to the hair dryer.

6. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 5, characterized in that: The PCB board is equipped with at least one infrared lamp that emits light outwards.

7. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 5, characterized in that: The atomizer body also includes a button disposed on the front cover of the body and electrically connected to the PCB board, and a charging port disposed on the front cover of the body and electrically connected to the PCB board.

8. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 5, characterized in that: The oil storage tank includes an oil storage front cover embedded in the rear cover of the main body, at least one oil storage magnet disposed at one end of the oil storage front cover near the rear cover of the main body and magnetically attracted to the magnet of the main body, an oil storage rear cover disposed on the oil storage front cover, an oil storage fiber rod disposed between the oil storage front cover and the oil storage rear cover, and an oil storage cotton disposed at one end of the oil storage fiber rod near the oil storage front cover. An oil storage cavity for oil storage is formed between the oil storage front cover and the oil storage rear cover.

9. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 8, characterized in that: The oil storage front cover is provided with an addition port, and the addition port is covered with an addition sealing silicone.

10. The infrared atomizer for precise airflow guidance in a hair dryer according to claim 8, characterized in that: The front cover of the oil storage has a front cover fixing boss that extends toward the rear cover of the oil storage and fixes one end of the oil storage fiber rod. The rear cover of the oil storage has a rear cover fixing boss that extends toward the front cover of the oil storage and fixes the other end of the oil storage fiber rod. The oil storage tank also includes a compression spring that presses one end against the rear cover fixing boss and the other end against the oil storage cotton.

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