A hair dryer housing assembly and a hair dryer

Abstract

This utility model relates to a hair dryer housing assembly and a hair dryer. The hair dryer housing assembly includes a nozzle housing and a handle housing. The nozzle housing includes a main body and a rear cover. The main body is a cavity structure with an open rear end. The rear cover is fitted onto the open rear end of the main body. The handle housing is connected to the outer side wall of the nozzle housing. The rear cover is a cover structure with an open front end. The inner peripheral wall of the main body has at least two first engaging portions spaced axially at the end near the open end. The outer peripheral wall of the rear cover has a second engaging portion. The second engaging portion enters the interior of the main body through the open rear end, passes through at least two first engaging portions, and engages with the first engaging portion away from the open rear end. This utility model, through the cooperation of at least two first engaging portions and the second engaging portion, provides double protection for the rear cover, effectively preventing the rear cover from detaching from the nozzle housing when the hair dryer is dropped.

Description

Technical Field

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

[0002] Hair dryers are common electrical appliances. Their working principle involves a motor driving a rotor that rotates the fan blades, drawing air in through the inlet and creating a centrifugal airflow before expelling it through the outlet. Currently, the typical hair dryer casing consists of a cylindrical body and a handle. The cylindrical body includes a cylindrical section with an open rear end and a detachable back cover attached to the rear. The back cover is usually secured to the cylindrical body with simple clips. The handle is connected to the side wall of the cylindrical body and communicates with its interior. Therefore, if a user accidentally drops the hair dryer, the impact could easily cause the back cover to detach, posing a safety hazard of electric shock or burns if the internal live components come into contact with the user. Utility Model Content

[0003] Based on this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a hair dryer housing assembly and hair dryer. Through the cooperation of at least two first locking parts and a second locking part, the back cover can play a double protection role, preventing the back cover from coming out of the hair dryer housing when the hair dryer is dropped, thereby improving the safety of the hair dryer.

[0004] To achieve the above objectives, the first aspect of this utility model provides a hair dryer housing assembly, including a hair dryer housing and a handle housing. The hair dryer housing includes a hair dryer body and a rear cover. The hair dryer body is a cavity structure with an opening at the rear end. The rear cover is disposed on the rear opening of the hair dryer body. The handle housing is connected to the outer side wall of the hair dryer housing.

[0005] The rear cover is a cover structure with an open front end. The inner peripheral wall of the air duct body has at least two first snap-fit ​​parts spaced axially at the end near the opening of the air duct body. The outer peripheral wall of the rear cover has a second snap-fit ​​part. The second snap-fit ​​part enters the interior of the air duct body from the rear opening of the air duct body, passes through at least two first snap-fit ​​parts in sequence, and engages with the first snap-fit ​​part away from the rear opening of the air duct body.

[0006] Therefore, according to the present invention, the hair dryer housing assembly has at least two first locking parts arranged sequentially at intervals along the axial direction on the inner peripheral wall of the main body of the hair dryer, and correspondingly, at least one second locking part is arranged on the outer peripheral wall of the rear cover. The second locking part is arranged to pass through at least two first locking parts in the axial direction and then lock with the first locking part away from the main body of the hair dryer. In this way, at least two first locking parts form at least two layers of protection in the same direction. Even if the hair dryer is accidentally dropped and deformed, causing the rear cover to slide backward, the second locking part of the rear cover will encounter an adjacent first locking part and lock into it after leaving the innermost first locking part. This ensures that the rear cover will not completely detach from the main body of the hair dryer when it is dropped, eliminating safety hazards and improving the safety of the hair dryer.

[0007] In one embodiment, the inner peripheral wall of the air duct body is provided with at least two first snap-fit ​​portions at equal intervals along the axial direction at one end near the opening of the air duct body, and the outer peripheral wall of the rear cover is provided with at least two second snap-fit ​​portions at equal intervals along the axial direction, wherein the distance between two adjacent first snap-fit ​​portions is equal to the distance between two adjacent second snap-fit ​​portions.

[0008] In one embodiment, the first snap-fit ​​part is a slot structure, and the second snap-fit ​​part is an elastic buckle structure.

[0009] In one embodiment, the groove depth of the first snap-fit ​​portion is greater than or equal to 0.3 mm, and the engagement amount between the second snap-fit ​​portion and the first snap-fit ​​portion is greater than or equal to 0.3 mm.

[0010] In one embodiment, the inner peripheral wall of the air duct body is provided with at least two first snap-fit ​​portions in the circumferential direction of each first snap-fit ​​portion, and the outer peripheral wall of the rear cover is provided with at least two second snap-fit ​​portions in the circumferential direction of each second snap-fit ​​portion.

[0011] In one embodiment, the first snap-fit ​​part is an elastic snap-fit ​​structure, and the second snap-fit ​​part is a slot structure.

[0012] In one embodiment, the groove depth of the second snap-fit ​​portion is greater than or equal to 0.3 mm, and the engagement amount between the first snap-fit ​​portion and the second snap-fit ​​portion is greater than or equal to 0.3 mm.

[0013] In one embodiment, the rear cover has a flange extending radially outward at the end away from its opening, a tightening part is provided on the outer side wall of the rear cover, and an abutting part is provided on the inner peripheral wall of the air duct body. The tightening part and the abutting part form an interference fit, and the flange abuts against the opening end of the air duct body.

[0014] In one embodiment, both the tightening part and the abutting part are inclined block structures, and the inclined surface of the tightening part and the inclined surface of the abutting part cooperate to abut against each other.

[0015] The second aspect of this utility model provides a hair dryer, which includes the hair dryer housing assembly described in any one of the above claims. According to this utility model, the hair dryer, through the cooperation of at least two first locking portions and a second locking portion, provides double protection for the rear cover, preventing the rear cover from detaching from the hair dryer housing when the hair dryer is dropped, thereby improving the safety of the hair dryer.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the hair dryer housing assembly according to an embodiment of the present utility model;

[0018] Figure 2 This is a partial cross-sectional schematic diagram of the hair dryer housing assembly according to an embodiment of the present utility model;

[0019] Figure 3 for Figure 2 An enlarged schematic diagram of part A shown;

[0020] Figure 4 This is a schematic diagram of the structure of the rear cover of the hair dryer housing assembly according to an embodiment of the present utility model;

[0021] Figure 5 This is an exploded view of the air duct shell according to an embodiment of the present utility model;

[0022] Figure 6 for Figure 5 An enlarged schematic diagram of part B is shown below;

[0023] Figure 7 This is a cross-sectional schematic diagram of a hair dryer according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Air duct housing; 11. Air duct body; 12. First snap-fit ​​part; 13. Abutting part; 14. Rear cover; 15. Second snap-fit ​​part; 16. Flanged edge; 17. Tightening part; 20. Handle housing. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely 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.

[0027] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In related technologies, hair dryers are commonly used electrical appliances. Their working principle involves a motor driving a rotor to rotate the fan blades, drawing air in through the air inlet and creating a centrifugal airflow before blowing it out through the air outlet. Currently, the casing structure of a hair dryer generally includes a cylindrical body and a handle. The cylindrical body consists of a cylindrical body with an open rear end and a detachable back cover mounted on the rear end of the cylindrical body. The back cover is usually fixed to the cylindrical body with simple clips. The handle is connected to the side wall of the cylindrical body and communicates with its interior. Therefore, if a user accidentally drops the hair dryer, the impact can easily cause the back cover to detach, posing a safety hazard of electric shock or burns if the internal live components come into contact with the user.

[0030] In view of this, the present invention provides a hair dryer housing assembly and a hair dryer. According to the embodiments of the present invention, the hair dryer housing assembly and hair dryer, through the cooperation of at least two first latching parts and a second latching part, can provide double protection for the rear cover, preventing the rear cover from detaching from the hair dryer housing when the hair dryer is dropped, thus improving the safety of the hair dryer.

[0031] Please see Figures 1 to 7 The first aspect of this utility model provides a hair dryer housing assembly, including a hair dryer housing 10 and a handle housing 20. The hair dryer housing 10 includes a hair dryer body 11 and a rear cover 14. The hair dryer body 11 is a cavity structure with a rear opening. The rear cover 14 is disposed on the rear opening of the hair dryer body 11. The handle housing 20 is connected and disposed on the outer side wall of the hair dryer housing 10. The rear cover 14 is a cover structure with a front opening. At least two first engaging portions 12 are axially spaced at one end of the inner peripheral wall of the hair dryer body 11 near the opening of the hair dryer body 11. A second engaging portion 15 is disposed on the outer peripheral wall of the rear cover 14. The second engaging portion 15 enters the interior of the hair dryer body 11 from the rear opening of the hair dryer body 11, passes through at least two first engaging portions 12 in sequence, and engages with the first engaging portion 12 away from the rear opening of the hair dryer body 11.

[0032] Therefore, according to the hair dryer housing assembly of this utility model, at least two first locking portions 12 are sequentially and spaced apart along the axial direction on the inner peripheral wall of the hair dryer body 11. Correspondingly, at least one second locking portion 15 is provided on the outer peripheral wall of the rear cover 14. The second locking portion 15 passes through at least two first locking portions 12 in sequence along the axial direction and then locks with the first locking portion 12 away from the hair dryer body 11. In this way, at least two first locking portions 12 form at least two layers of protection in the same direction. Even if the hair dryer is accidentally dropped and deformed, causing the rear cover 14 to slide backward, the second locking portion 15 of the rear cover 14 will encounter an adjacent first locking portion 12 after leaving the innermost first locking portion 12 and lock into that first locking portion 12. This ensures that the rear cover will not completely come off the hair dryer body 11 when the hair dryer is dropped, eliminating safety hazards and improving the safety of the hair dryer.

[0033] Furthermore, the inner peripheral wall of the duct body 11 of this invention is provided with at least two first snap-fit ​​portions 12 at equal intervals along the axial direction at the end near the opening of the duct body 11, and the outer peripheral wall of the rear cover 14 is provided with at least two second snap-fit ​​portions 15 at equal intervals along the axial direction. The distance between two adjacent first snap-fit ​​portions 12 is equal to the distance between two adjacent second snap-fit ​​portions 15. That is, the at least two first snap-fit ​​portions 12 of this invention are distributed at equal intervals along the same direction, and the at least two second snap-fit ​​portions 15 are distributed at equal intervals along the same direction, so that the at least two second snap-fit ​​portions 15 can respectively engage with the at least two adjacent first snap-fit ​​portions 12; that is, the rear cover 14 is snap-fitted to the duct body 11 through the at least two second snap-fit ​​portions 15, further improving the connection stability between the rear cover 14 and the duct body 11.

[0034] Furthermore, to improve the connection stability between the rear cover 14 and the air duct body 11, in some embodiments of this utility model, the inner peripheral wall of the air duct body 11 is provided with at least two first latching portions 12 in the circumferential direction of each first latching portion 12, and the outer peripheral wall of the rear cover 14 is provided with at least two second latching portions 15 in the circumferential direction of each second latching portion 15. That is, in these embodiments, at least two first latching portions 12 are provided in the same circumferential direction, thereby making the connection between the rear cover 14 and the air duct body 11 in the circumferential direction more secure and reliable.

[0035] In this embodiment of the invention, the first latching portion 12 is a slot structure, and the second latching portion 15 is an elastic snap-fit ​​structure. It is worth noting that in some other embodiments, the first latching portion 12 may be an elastic snap-fit ​​structure, and the second latching portion 15 may be a slot structure.

[0036] To better understand the hair dryer housing assembly of this utility model, the first snap-fit ​​part 12 in this embodiment is a slot structure, and there are two first snap-fit ​​parts 12. The second snap-fit ​​part 15 is an elastic buckle structure, and there is one second snap-fit ​​part 15. The connection relationship between the hair dryer body 11 and the rear cover 14 in this embodiment is specifically described. In this embodiment, the groove depth of the first snap-fit ​​part 12 is greater than or equal to 0.3 mm, and the engagement amount between the second snap-fit ​​part 15 and the first snap-fit ​​part 12 is greater than or equal to 0.3 mm. When the rear cover 14 is inserted into the rear end opening of the hair dryer body 11, the second snap-fit ​​part 15 first passes through the first snap-fit ​​part 12 adjacent to the rear end opening of the hair dryer body 11, and then continues to be inserted until the second snap-fit ​​part 15 engages and snaps into the innermost first snap-fit ​​part 12 of the hair dryer body 11, thereby completing the assembly between the cover 14 and the hair dryer body 11.

[0037] Optionally, in some embodiments of this utility model, a flange 16 is provided radially outward at the end of the rear cover 14 away from its opening, a tightening part 17 is provided on the outer side wall of the rear cover 14, and an abutting part 13 is provided on the inner peripheral wall of the air duct body 11. The tightening part 17 and the abutting part 13 form an interference fit, and the flange 16 abuts against the opening end of the air duct body 11. Both the tightening part 17 and the abutting part 13 are inclined block structures, with the inclined surface of the tightening part 17 engaging with the inclined surface of the abutting part 13. Thus, the inner peripheral wall of the air duct body 11 and the outer side wall of the rear cover 14 form an interference fit through the abutting part 13 and the tightening part 17, respectively, allowing the rear cover 14 to be firmly connected to the air duct body 11. Furthermore, the second locking part 15 engages with the first locking part 12, further improving the connection strength between the rear cover 14 and the air duct body 11. Similarly, the number of tightening parts 17 and abutting parts 13 can be set according to actual needs.

[0038] The second aspect of this utility model provides a hair dryer, which includes the hair dryer housing assembly of any of the above. According to the hair dryer of this utility model, the rear cover 14 can be doubly protected by the cooperation of at least two first locking parts 12 and second locking parts 15, preventing the rear cover 14 from coming off the hair dryer housing 10 when the hair dryer is dropped, thereby improving the safety of the hair dryer.

[0039] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the utility model's hair dryer housing assembly and hair dryer range. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A hair dryer housing assembly, characterized in that: The device includes a duct housing and a handle housing. The duct housing includes a duct body and a rear cover. The duct body is a cavity structure with an opening at the rear end. The rear cover is placed over the rear opening of the duct body. The handle housing is connected to the outer wall of the duct housing. The rear cover is a cover structure with an open front end. The inner peripheral wall of the air duct body has at least two first snap-fit ​​parts spaced axially at the end near the opening of the air duct body. The outer peripheral wall of the rear cover has a second snap-fit ​​part. The second snap-fit ​​part enters the interior of the air duct body from the rear opening of the air duct body, passes through at least two first snap-fit ​​parts in sequence, and engages with the first snap-fit ​​part away from the rear opening of the air duct body.

2. The hair dryer housing assembly according to claim 1, characterized in that: The inner peripheral wall of the air duct body is provided with at least two first snap-fit ​​parts at equal intervals along the axial direction at the end near the opening of the air duct body, and the outer peripheral wall of the rear cover is provided with at least two second snap-fit ​​parts at equal intervals along the axial direction, and the distance between two adjacent first snap-fit ​​parts is equal to the distance between two adjacent second snap-fit ​​parts.

3. The hair dryer housing assembly according to claim 1, characterized in that: The first snap-fit ​​part is a slot structure, and the second snap-fit ​​part is an elastic buckle structure.

4. The hair dryer housing assembly according to claim 3, characterized in that: The groove depth of the first snap-fit ​​part is greater than or equal to 0.3 mm, and the engagement amount between the second snap-fit ​​part and the first snap-fit ​​part is greater than or equal to 0.3 mm.

5. The hair dryer housing assembly according to claim 1, characterized in that: The inner peripheral wall of the air duct body is provided with at least two first snap-fit ​​parts in the circumferential direction of each first snap-fit ​​part, and the outer peripheral wall of the rear cover is provided with at least two second snap-fit ​​parts in the circumferential direction of each second snap-fit ​​part.

6. The hair dryer housing assembly according to claim 1, characterized in that: The first snap-fit ​​part is an elastic snap-fit ​​structure, and the second snap-fit ​​part is a slot structure.

7. The hair dryer housing assembly according to claim 6, characterized in that: The groove depth of the second snap-fit ​​part is greater than or equal to 0.3 mm, and the engagement amount between the first snap-fit ​​part and the second snap-fit ​​part is greater than or equal to 0.3 mm.

8. The hair dryer housing assembly according to claim 1, characterized in that: The rear cover has a flange extending radially outward from the end away from its opening. A tightening part is provided on the outer wall of the rear cover, and an abutting part is provided on the inner peripheral wall of the air duct body. The tightening part and the abutting part form an interference fit, and the flange abuts against the opening end of the air duct body.

9. The hair dryer housing assembly according to claim 8, characterized in that: Both the tightening part and the abutting part are inclined block structures, and the inclined surface of the tightening part and the inclined surface of the abutting part cooperate to abut against each other.

10. A hair dryer, characterized in that: Includes the hair dryer housing assembly according to any one of claims 1 to 9.

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