Hair dryer casing and hair dryer

Abstract

This invention relates to a hair dryer housing and a hair dryer. The hair dryer housing includes a main body, a nozzle, a connecting assembly, and an annular elastic ring. The connecting assembly includes a first ring and a second ring. The first ring has a first connecting structure, and the second ring has a second connecting structure. The annular elastic ring includes an arc-shaped linkage portion and at least two protrusions. The first ring is coaxially rotatable relative to the second ring. The protrusions located in the first connecting structure are compressed by the second ring. When the first connecting structure is aligned with the second connecting structure, the protrusions release elastic force and enter the second connecting structure, thereby fixing the first and second rings relatively. The main body and the nozzle are detachably connected by the first and second rings. In the aforementioned hair dryer housing, the protrusions can accumulate and release elastic force. When assembling or disassembling the main body and the nozzle, the elastic force of the protrusions must first be overcome, thereby enhancing the connection stability between the main body and the nozzle.

Description

Technical Field

[0001] This invention relates to the field of hair dryer technology, and in particular to a hair dryer housing and a hair dryer. Background Technology

[0002] Dust is frequently generated in industrial production, and hair dryers are often used to remove it in confined spaces. To meet the needs of different scenarios, hair dryers are typically equipped with nozzles of varying lengths and thicknesses. These nozzles are detachably connected to the hair dryer, allowing it to output airflow suitable for different environments. The traditional connection between the hair dryer and the nozzle involves a locking mechanism using a slot and a locking strip. However, this connection method is not secure and is prone to accidental detachment during use. Summary of the Invention

[0003] Therefore, it is necessary to provide a hair dryer housing and hair dryer to address the problem that the traditional connection between the hair dryer housing and the nozzle is not secure, which can easily lead to misoperation and the nozzle accidentally falling off the hair dryer during use.

[0004] This invention provides a hair dryer housing, comprising:

[0005] The main body is equipped with a first vent.

[0006] The blower nozzle is equipped with a second air vent.

[0007] A connecting assembly includes a first collar and a second collar, wherein the first collar is provided with a first connecting structure and the second collar is provided with a second connecting structure; the first collar is capable of coaxial rotation relative to the second collar so that the first connecting structure is aligned with the second connecting structure;

[0008] An annular elastic ring includes an arc-shaped linkage portion and at least two protrusions; the elastic ring is sleeved on the first collar, and the protrusions are located on the first connecting structure. When the first collar and the second collar rotate coaxially, the protrusions can be squeezed by the second collar and accumulate elastic force; when the first connecting structure is aligned with the second connecting structure, the protrusions release the elastic force and enter the second connecting structure, so that the first collar and the second collar are relatively fixed.

[0009] The main body is provided with one of the first collar and the second collar, and the blow nozzle is provided with the other of the first collar and the second collar. When the first collar and the second collar are relatively fixed, the first air vent is connected to the second air vent.

[0010] The aforementioned hair dryer housing, main body, and nozzle are detachably connected via a first and second set of rings. Specifically, when the first and second rings rotate coaxially until the first connecting structure aligns with the second connecting structure, the protrusion on the first ring can enter the second connecting structure from the first connecting structure, thus connecting the main body and the nozzle. In this connection method, the protrusion can accumulate and release elastic force. When assembling and disassembling the main body and nozzle, the elastic force of the protrusion must first be overcome, thereby enhancing the connection stability between the main body and the nozzle. Furthermore, there are at least two protrusions, which form an elastic ring through a linkage. When one protrusion is compressed, it will exert stress on the other protrusion through the linkage, keeping it protruding beyond the linkage. This enhances the fatigue resistance of the protrusion and reduces the possibility of the nozzle accidentally detaching from the main body due to loss of elastic deformation.

[0011] In one embodiment, the linkage part has a notch, and when the protrusion is squeezed by the second collar, the notch allows the linkage part to expand circumferentially around the first collar.

[0012] In one embodiment, the first connection structure is a connection hole, and the second connection structure is at least one of a connection hole and a connection groove.

[0013] In one embodiment, the protrusion includes a first rod and a second rod, one end of the first rod is connected to one end of the linkage part, one end of the second rod is connected to the other end of the linkage part, and the end of the first rod away from the linkage part and the end of the second rod away from the linkage part are connected to form a first arc-shaped transition structure.

[0014] In one embodiment, the second collar includes a circumferentially joined placement portion, a pressing portion, and a second transition structure. The second transition structure is disposed between the placement portion and the pressing portion, and the second connecting structure is disposed on the pressing portion. When the protrusion rotates from the placement portion to the pressing portion, the first arc-shaped transition structure and the second transition structure cooperate to gradually increase the pressing force on the protrusion.

[0015] In one embodiment, when the protrusion is located in the placement portion, the nozzle can be disengaged from the body along the axial direction of the hair dryer housing.

[0016] In one embodiment, the first collar has a limiting groove for mounting the elastic ring.

[0017] In one embodiment, at least two of the protrusions are circumferentially spaced apart, the number of the first connecting structure and the second connecting structure is the same as the number of the protrusions, and the circumferential spacing angle of the first connecting structure and the second connecting structure matches the protrusions, and each protrusion can enter the second connecting structure through the first connecting structure.

[0018] In one embodiment, the hair dryer housing further includes a cover that can cover the connection between the first collar and the second collar. The main body is provided with one of a retaining strip and a retaining groove, and the cover is provided with the other of a retaining strip and a retaining groove. The cover can rotate around the main body so that the retaining strip rotates to engage with the retaining groove.

[0019] The present invention also provides a hair dryer, comprising:

[0020] The hair dryer housing described in any of the above embodiments;

[0021] A drive assembly is disposed within the main body, and the drive assembly is capable of driving the first vent to generate airflow. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the assembly of a hair dryer according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the disassembled structure of the outer casing of a medium-sized hair dryer;

[0024] Figure 3 for Figure 1 An exploded view of the casing of a medium-sized hair dryer;

[0025] Figure 4 These are schematic diagrams illustrating the structures of different models of blower nozzles of the present invention;

[0026] Figure 5 for Figure 3 Enlarged view of region A in the middle;

[0027] Figure 6 for Figure 3 Schematic diagram of the structure of the intermediate elastic ring;

[0028] Figure 7 for Figure 3 Assembly diagram of the intermediate elastic ring and the first set of rings;

[0029] Figure 8 for Figure 3 A schematic diagram of the structure of the second ring in the middle;

[0030] Figure 9This is a schematic diagram of a structure in one embodiment of the present invention, showing that the main body is detachably connected to a cover.

[0031] Figure 10 for Figure 3 A schematic diagram showing the disassembled structure of the main body and trachea.

[0032] 1-Hair dryer; 10-Hair dryer housing; 100-Main body; 110-First vent; 120-Clamping strip; 121-Blocking strip; 122-Groove; 130-Third vent; 200-Nose; 210-Second vent; 300-Connecting assembly; 310-First collar; 311-First connecting structure; 312-First surface; 313-Second surface; 320-Second collar; 321-Second connecting structure; 322-Third surface Surface; 323-Fourth surface; 324-Placement part; 325-Extrusion part; 326-Second transition structure; 400-Elastic ring; 410-Linkage part; 411-Notch; 420-Protrusion part; 421-First rod; 422-Second rod; 423-First arc-shaped transition structure; 500-Cover body; 510-Slot; 511-Placement slot; 512-Protrusion; 600-Air pipe; 610-Brush part; 611-Brush bristles; 20-Drive assembly. Detailed Implementation

[0033] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0036] Reference Appendix Figure 1This invention provides a hair dryer 1 capable of blowing or sucking air to remove dust and other dirt from confined spaces, such as the corners of internal components in precision instruments. Specifically, the hair dryer 1 can remove dirt by either sucking in dust or blowing it off the target area. It is worth noting that applying this hair dryer 1 to dust removal in industrial production is only one application scenario and is not intended to limit the invention; for example, the hair dryer 1 can also be used to dry hair.

[0037] Reference Appendix Figure 2 The hair dryer 1 includes a hair dryer housing 10 and a drive assembly 20. The hair dryer housing 10 is used to install the drive assembly 20. The drive assembly 20 can generate airflow inside the hair dryer housing 10 and deliver the airflow to the outside of the hair dryer housing, thereby performing suction and blowing.

[0038] Specifically, the drive assembly 20 may include a motor and an impeller (not shown). The motor can drive the impeller to rotate at high speed to bring external air into the blower housing 10 or to exhaust the airflow inside the blower housing 10 to the outside, thereby forming blowing or sucking.

[0039] Reference Appendix Figure 3 The hair dryer housing 10 includes a main body 100 and a nozzle 200. A motor and impeller are installed inside the main body 100. The main body 100 has a first vent 110 through which the airflow generated by the impeller can flow to the outside of the main body 100. The nozzle 200 is detachably connected to the main body 100 and has a second vent 210. After the main body 100 is connected to the nozzle 200, the first vent 110 and the second vent 210 communicate. (See attached diagram) Figure 4 The nozzle 200 includes various models of different lengths and thicknesses. After the different models of nozzle 200 are connected to the main body 100, the hair dryer 1 can output a variety of different airflows, thereby enhancing the ability of the hair dryer 1 to adapt to different usage scenarios.

[0040] The traditional connection between the main body 100 and the nozzle 200 is achieved by a locking mechanism using a slot and a locking strip. However, this connection is not secure and is prone to accidental detachment of the nozzle 200 from the main body 100 during use. This invention differs from the traditional connection method by using a connecting component 300 and an elastic ring 400 to achieve a detachable connection between the main body 100 and the nozzle 200.

[0041] The following will describe in detail, with reference to the accompanying drawings, how the connecting component 300 and the elastic ring 400 enable the detachable connection between the main body 100 and the nozzle 200.

[0042] Reference Appendix Figure 5The connecting assembly 300 includes a first collar 310 and a second collar 320. The first collar 310 has a first connecting structure 311, and the second collar 320 has a second connecting structure 321. The first collar 310 is coaxially rotatable relative to the second collar 320, so that the first connecting structure 311 is aligned with the second connecting structure 321. The first connecting structure 311 is a connecting hole, and the second connecting structure 321 is at least one of a connecting hole and a connecting groove. It is worth noting that the second connecting structure 321 may include only a connecting hole, only a connecting groove, or both a connecting hole and a connecting groove.

[0043] Specifically, the first collar 310 includes a first surface 312 and a second surface 313, with a connecting hole extending from the first surface 312 to the second surface 313. The second collar 320 includes a third surface 322 and a fourth surface 323, with the second connecting structure 321 being a connecting hole, extending from the third surface 322 to the fourth surface 323; and the second connecting structure 321 being a connecting groove, extending from the third surface 322 to the fourth surface 323 but not penetrating it.

[0044] For the first collar 310 to be able to rotate coaxially relative to the second collar 320, the diameters of the first collar 310 and the second collar 320 must be different. For example, the diameter of the first collar 310 can be larger than the diameter of the second collar 320. In this case, the first collar 310 being able to rotate coaxially relative to the second collar 320 means that the second collar 320 can extend into the first collar 310, and the second surface 313 is in contact with the third surface 322 and can rotate relative to it. Alternatively, the diameter of the first collar 310 can be smaller than the diameter of the second collar 320. In this case, the first collar 310 being able to rotate coaxially relative to the second collar 320 means that the first collar 310 can extend into the second collar 320, and the first surface 312 is in contact with the fourth surface 323 and can rotate relative to it.

[0045] Reference Appendix Figure 6 The elastic ring 400 is generally annular, and includes an arc-shaped linkage portion 410 and at least two protrusions 420. The elastic ring 400 can be fitted onto the first ring 310 (as shown in the attached figure). Figure 7 As shown), specifically, the first ring 310 can be fitted with a limiting groove 314 for the elastic ring 400 to be fitted, and the protrusion 420 is provided on the first connecting structure 311, thereby restricting the elastic ring 400 as a whole within the limiting groove 314.

[0046] When the first collar 310 and the second collar 320 rotate coaxially, the protrusion 420 located in the first connecting structure 311 is compressed by the second collar 320 and accumulates elastic force. When the first collar 310 and the second collar 320 rotate coaxially to the point where the first connecting structure 311 is aligned with the second connecting structure 321, the protrusion 420 can release the elastic force and enter the second connecting structure 321, so that the first collar 310 and the second collar 320 are relatively fixed.

[0047] When the protrusion 420 is compressed, the linkage 410 will also be subjected to a corresponding force and undergo elastic deformation. When one protrusion 420 is compressed, the corresponding force is transmitted to the other protrusions 420 through the linkage 410. This force keeps the other protrusions 420 protruding from the linkage 410, thereby increasing the resistance when the first and second collars 310 rotate relative to each other. This strengthens the connection between the first and second collars 310 during assembly and disassembly, improving the stability of the first and second collars 320 after assembly, and preventing accidental detachment of the first and second collars 320 after assembly. In one embodiment, the elastic deformation of the linkage 410 can allow the linkage 410 to move circumferentially around the first collar 310. Specifically, the linkage 410 has a notch 411, which allows the linkage 410 to expand circumferentially around the first collar 310 when the protrusion 420 is compressed by the second collar 320. In other embodiments, the linkage part 410 may not have a notch 411. In this case, the elastic deformation of the linkage part 410 may be the radial expansion of the linkage part 410 along the first collar 310.

[0048] In one embodiment, at least two protrusions 420 are circumferentially spaced apart. The number of the first connecting structure 311 and the second connecting structure 321 is the same as the number of protrusions 420, and the circumferential spacing angle of the first connecting structure 311 and the second connecting structure 321 matches the protrusions 420. That is, each protrusion 420 can enter the second connecting structure 321 through the first connecting structure 311.

[0049] Continue to refer to the appendix Figure 6 In one embodiment, the protrusion 420 includes a first rod 421 and a second rod 422. One end of the first rod 421 is connected to one end of the linkage 410, and one end of the second rod 422 is connected to the other end of the linkage 410. The ends of the first rod 421 and the second rod 422 that are away from the linkage 410 are connected to form a first arc-shaped transition structure 423. When the protrusion 420 is compressed by the second collar 320, the first arc-shaped transition structure 423 prevents the protrusion 420 from losing its elastic deformation ability due to a sudden increase in the compressive force, thus helping to improve the service life of the protrusion 420.

[0050] Reference Appendix Figure 8 As shown, in one embodiment, the second collar 320 includes a circumferentially joined placement portion 324, a pressing portion 325, and a second transition structure 326. The second transition structure 326 is disposed between the placement portion 324 and the pressing portion 325, and a second connecting structure 321 is disposed on the pressing portion 325. The radial dimension of the placement portion 324 is smaller than the radial dimension of the pressing portion 325. The placement portion 324 is a portion that facilitates the entry of the protrusion 420 into the second collar 320. The pressing portion 325 is a portion that presses the protrusion 420. The second transition structure 326 can be an arc-shaped surface or a sloped surface. When installing the first ring 310 and the second ring 320, the protrusion 420 is first aligned axially with the placement part 324, and then the protrusion 420 and the placement part 324 are brought closer together axially so that the protrusion 420 is placed inside the placement part 324. Then, the first ring 310 and the second ring 320 are rotated coaxially. The protrusion 420 follows the rotation of the first ring 310, passes through the second transition structure 326, enters the extrusion part 325, and finally aligns with the second connecting structure 321. When the protrusion 420 rotates from the placement part 324 to the extrusion part 325, the first arc-shaped transition structure 423 and the second transition structure 326 cooperate to gradually increase the extrusion pressure on the protrusion 420, thereby further improving the service life of the protrusion 420.

[0051] Preferably, when the protrusion 420 is located in the placement portion 324, the nozzle 200 can detach from the main body 100 along the axial direction of the hair dryer housing 10. This can be understood as the placement portion 324 extending to the edge of the first collar 310 near the second collar 320. It should be noted that when the protrusion 420 is located in the placement portion 324, the protrusion 420 does not contact the placement portion 324, that is, the protrusion 420 is not compressed by the placement portion 324. It can be understood that in other embodiments, when the protrusion 420 is located in the placement portion 324, the protrusion 420 contacts the placement portion 324 but is not compressed by the placement portion 324, or the protrusion 420 contacts the placement portion 324 and is simultaneously compressed by the placement portion 324, the compressive force being less than the compressive force experienced by the protrusion 420 when it is located in the compression portion 325.

[0052] The main body 100 is provided with one of a first collar 310 and a second collar 320, and the nozzle 200 is provided with the other of the first collar 310 and the second collar 320. When the first collar 310 and the second collar 320 are relatively fixed, the first air vent 110 is connected to the second air vent 120. It is worth noting that the connection between the main body 100 and one of the first collar 310 and the second collar 320 can be integrally formed or detachably connected, and the connection between the nozzle 200 and the other of the first collar 310 and the second collar 320 can also be integrally formed or detachably connected.

[0053] The aforementioned hair dryer housing 10, main body 100, and nozzle 200 are detachably connected by a first collar 310 and a second collar 320. Specifically, when the first collar 310 and the second collar 320 rotate coaxially until the first connecting structure 311 aligns with the second connecting structure 321, the protrusion 420 located on the first collar 310 can enter the second connecting structure 321 from the first connecting structure 311, thereby connecting the main body 100 and the nozzle 200. In this connection method, the protrusion 420 can accumulate and release elastic force. When the main body 100 and the nozzle 200 are disassembled and assembled, the elastic force of the protrusion 420 must be overcome first, thereby enhancing the connection stability between the main body 100 and the nozzle 200. In addition, there are at least two protrusions 200. The at least two protrusions 200 form an elastic ring 400 through the linkage 410. When one of the protrusions 420 is compressed, it will generate stress on the other protrusion 420 through the linkage 410 to keep it protruding from the linkage 410, thereby enhancing the fatigue resistance of the protrusion 420 and reducing the possibility that the nozzle 200 may accidentally fall off the main body 100 due to the loss of elastic deformation ability of the protrusion 420. In addition, since at least two protrusions 420 are connected by a linkage 410, the resistance when the first collar 310 and the second collar 320 rotate relative to each other increases, making the first collar 310 and the second collar 320 more tightly connected during assembly and disassembly, improving the stability of the first collar 310 and the second collar 320 after assembly, and preventing the first collar 310 and the second collar 320 from accidentally falling off after assembly.

[0054] Reference Appendix Figure 9 In one embodiment, the hair dryer housing 10 further includes a cover 500, which can cover the connection between the first collar 310 and the second collar 320, thereby further preventing accidental disengagement of the first collar 310 and the second collar 320 due to accidental operation.

[0055] Specifically, the outer surface of the main body 100 is provided with a retaining strip 120, and the inner surface of the cover 500 is provided with a retaining groove 510 and a placement groove 511. The retaining groove 510 and the placement groove 511 are connected, and the placement groove 511 extends to the ends of the cover 500 opposite to the main body 100. It is worth noting that the retaining groove 510 does not extend through the end of the cover 100. When the cover 500 is installed with the main body 100, the retaining strip 120 is first aligned with the placement groove 511 axially, and then the retaining strip 120 and the placement groove 511 are brought closer together axially so that the retaining strip 120 is placed in the placement groove 511. At this time, the cover 500 covers the connection between the first collar 310 and the second collar 320. Then, the cover 500 is rotated coaxially relative to the main body 100. The retaining strip 120 on the main body 100 moves from the placement groove 511 to the retaining groove 510 to engage with the main body 100 as the main body 100 rotates. In other embodiments, the card slot 510 and the placement slot 511 may be disposed on the outer side of the main body 100, and the card strip 120 may be disposed on the inner side of the cover 500.

[0056] Furthermore, the main body 100 is also provided with a blocking strip 121, which is connected to the locking strip 120 and is arranged vertically. The blocking strip 121 is used to prevent the locking strip 120 from extending excessively into the locking groove 510, thereby affecting the locking effect between the locking strip 120 and the locking groove 510. In addition, the locking strip 120 is also provided with a groove 122, and a protrusion 512 adapted to the groove 122 is provided in the locking groove 510. After the locking strip 120 enters the locking groove 510, the protrusion 512 is first squeezed by the end of the locking strip 120 away from the blocking strip 121 and accumulates elastic force. When the locking strip 120 continues to extend into the locking groove 510 until the protrusion 512 is aligned with the groove 122, the protrusion 512 can release the elastic force and enter the groove 122. The cooperation between the protrusion 512 and the groove 122 further enhances the connection stability between the cover 500 and the main body 100. It is worth noting that the protrusion 512 can also be made of a rigid material that does not undergo elastic deformation after being compressed. In this case, when the protrusion 512 is compressed by the retaining strip 120, the protrusion 512 transmits the compressive force to the cover 500, thereby causing the cover 500 to undergo elastic deformation. In other embodiments, the groove 122 can be formed on the cover 500, and the elastic protrusion 512 can be provided on the retaining strip 120.

[0057] Reference Appendix Figure 10In one embodiment, a third vent 130 is provided at one end of the main body 100 relative to the first vent 110. A drive assembly 20 installed inside the main body 100 can drive airflow from the first vent 110 to the third vent 130 to complete inhalation. The drive assembly 20 can also drive airflow from the third vent 130 to the first vent 110 to complete exhalation. It is worth noting that the shape of the third vent 130 is not limited and can be circular, rectangular, or elliptical. In this embodiment, the third vent 130 is elliptical. The third vent 130 can be connected or disconnected from the air tube 600, which has an elliptical cross-section. The end of the air tube 600 facing away from the main body can be detachably connected to a brush 610. Multiple bristles 611 can be arranged circumferentially along the end of the brush 610 facing away from the air tube 600. The bristles 611 can effectively remove stubborn dirt. The hollow shape of the brush 610 facilitates airflow, and the bristles 611 further enhance the cleaning ability of the hair dryer 1, making it convenient to use. Furthermore, the side of the brush 610 facing away from the air tube 600 is inclined to the length direction of the main body 100. All bristles 611 can be of uniform length, meaning the plane formed by the ends of the multiple bristles 611 facing away from the brush 610 is also inclined to the length direction of the main body 100. Compared to a plane formed by multiple bristles 611 that is perpendicular to the length direction of the main body 100, this inclined plane provides more precise and convenient dirt removal.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A hair dryer housing, characterized in that, include: The main body is equipped with a first vent. The blower nozzle is equipped with a second air vent. A connecting assembly includes a first collar and a second collar. The first collar has a first connecting structure, which is a connecting hole. The second collar has a second connecting structure, which is at least one of a connecting hole and a connecting groove. The first collar is capable of coaxial rotation relative to the second collar to align the first connecting structure with the second connecting structure. The annular elastic ring includes an arc-shaped linkage portion and at least two protrusions. The at least two protrusions are circumferentially spaced apart. The number of the first connecting structure and the second connecting structure is the same as the number of protrusions, and the circumferential spacing angle of the first connecting structure and the second connecting structure matches the protrusions. Each protrusion can enter the second connecting structure through the first connecting structure. The elastic ring is sleeved on the first collar, and the protrusions are located on the first connecting structure. When the first collar and the second collar rotate coaxially, the protrusions can be squeezed by the second collar and accumulate elastic force. When the first connecting structure is aligned with the second connecting structure, the protrusion releases elastic force and enters the second connecting structure, so that the first collar and the second collar are relatively fixed. The main body is provided with one of the first collar and the second collar, and the blow nozzle is provided with the other of the first collar and the second collar. When the first collar and the second collar are relatively fixed, the first air vent is connected to the second air vent.

2. The hair dryer housing according to claim 1, characterized in that, The linkage part has a notch, and when the protrusion is squeezed by the second collar, the notch allows the linkage part to expand circumferentially around the first collar.

3. The hair dryer housing according to claim 1, characterized in that, The protrusion includes a first rod and a second rod. One end of the first rod is connected to one end of the linkage part, and one end of the second rod is connected to the other end of the linkage part. The end of the first rod away from the linkage part and the end of the second rod away from the linkage part are connected to form a first arc-shaped transition structure.

4. The hair dryer housing according to claim 3, characterized in that, The second ring includes a circumferentially spliced ​​placement part, a pressing part, and a second transition structure. The second transition structure is located between the placement part and the pressing part, and the second connecting structure is located in the pressing part. When the protrusion rotates from the placement part to the pressing part, the first arc-shaped transition structure and the second transition structure cooperate to gradually increase the pressing force on the protrusion.

5. The hair dryer housing according to claim 4, characterized in that, When the protrusion is located in the placement part, the nozzle can be detached from the main body along the axial direction of the hair dryer housing.

6. The hair dryer housing according to claim 1, characterized in that, The first ring has a limiting groove, which is used to install the elastic ring.

7. The hair dryer housing according to claim 1, characterized in that, The hair dryer housing also includes a cover that can cover the connection between the first collar and the second collar. The main body is provided with one of a retaining strip and a retaining groove, and the cover is provided with the other of a retaining strip and a retaining groove. The cover can rotate around the main body so that the retaining strip rotates to engage with the retaining groove.

8. A hair dryer, characterized in that, include: Hair dryer housing as described in any one of claims 1-7; A drive assembly is disposed within the main body and is capable of driving the first vent to generate airflow.

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