Air inlet structure of blowing equipment

Abstract

The utility model discloses an air inlet structure of blowing equipment. The air inlet structure comprises a concave cavity arranged on an equipment main body, an air inlet cover arranged on an opening of the concave cavity in a covering manner, and a fixed knob connected between the concave cavity and the air inlet cover, a fixed seat is arranged at the bottom of the concave cavity, and at least two rotary connection grooves are formed in the fixed seat; each rotary connection groove comprises an insertion opening part and a limiting opening part; a guide cylinder part is arranged on the air inlet cover; the fixed knob penetrates through the guide cylinder part and is inserted into the fixed seat, a clamping pin is arranged at the front end of the fixed knob, a hook part is arranged at the front end of the clamping pin, the thickness of the clamping pin corresponding to the hook part is smaller than or equal to the width of the insertion opening part and larger than the width of the limiting opening part, and the thickness of a main body of the clamping pin is smaller than or equal to the width of the limiting opening part; and a constraint structure is arranged between the fixed knob and the air inlet cover. According to the utility model, the fixed knob penetrates through the guide cylinder part of the air inlet cover and is rotationally clamped on the fixed seat of the concave cavity, so that the disassembly and assembly of the air inlet cover are simplified, and the installation stability is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of blowing equipment, in particular to an air inlet structure of blowing equipment. Background Art

[0002] Existing hair dryers are generally divided into pet hair dryers for drying pet hair and hair dryers for drying hair according to different power and user groups; existing hair dryers generally include an equipment body for blowing out hot air, and the interior of the existing equipment body is generally structured to form a fan cavity for installing a fan, and an air outlet structure and an air inlet structure connected to the fan cavity are respectively arranged at the front and rear ends thereof.

[0003] The air inlet structure of the existing hair dryer generally includes a concave cavity which is structurally arranged on the equipment body and connected to the fan cavity, an air inlet cover which is arranged on the concave cavity, and a filter component (sponge, etc.) embedded between the concave cavity and the air inlet cover. The existing air inlet cover and the concave cavity are mostly fixedly connected by snap-fitting. Such snap-fitting connection is not only cumbersome to operate, but also easy to be unhooked and separated during long-term use, and there is room for improvement. Utility Model Content

[0004] The utility model aims to overcome the defects in the above-mentioned prior art and provides an air inlet structure of a hair dryer, which has a simple and reasonable structure. A fixing knob passes through the guide tube portion of the air inlet cover and is rotatably clamped on the fixing seat of the concave cavity to achieve fixed connection between the air inlet cover and the concave cavity, which greatly simplifies the disassembly and assembly of the air inlet cover and also improves the matching stability between the air inlet cover and the concave cavity.

[0005] To achieve the above-mentioned purpose, the utility model provides an air inlet structure of a hair dryer, comprising a concave cavity arranged on a main body of the device, an air inlet cover arranged to cover an opening of the concave cavity, and a fixed knob connected between the concave cavity and the air inlet cover;

[0006] A fixing seat is provided at the bottom of the concave cavity and at least two rotation grooves are provided on the fixing seat at intervals around the circumference, wherein the rotation groove includes an insertion opening and a limiting opening connected to the insertion opening;

[0007] The air inlet cover is provided with a guide tube portion corresponding to the fixing seat;

[0008] The fixing knob passes through the guide tube portion of the air inlet cover and is fixedly inserted on the fixing seat of the concave cavity. The front end of the fixing knob corresponding to the insertion direction is provided with at least two clamping feet that match the rotation grooves one by one. The inner wall and / or outer wall of the front end of the clamping feet are provided with hooks that match the inner wall of the edge of the limiting mouth. The thickness of the clamping feet at the hook part corresponding to the hook part is less than or equal to the width of the insertion mouth and greater than the width of the limiting mouth. The main body thickness of the clamping feet is less than or equal to the width of the limiting mouth.

[0009] A restraining structure for limiting the separation of the air inlet cover is arranged between the fixing knob and the air inlet cover.

[0010] It is further configured that: a first sinking platform for inserting the guide tube part of the air inlet cover is recessed on the corresponding end surface of the fixing seat, and at least two of the rotation grooves are arranged on the bottom of the first sinking platform;

[0011] At least one positioning notch is arranged on the front end of the guide tube portion, and a positioning rib matching the positioning notch is correspondingly arranged on the first sinking platform.

[0012] It is further configured that: a plurality of retaining ribs with horizontal extension sections are arranged at intervals around the inner wall of the guide tube portion corresponding to the rear port, a channel for inserting the clamping pin is formed between the ends of two adjacent retaining ribs, and rear end surfaces of the horizontal extension sections of the plurality of retaining ribs cooperate to form a resting plane;

[0013] The rear end of the fixing knob is provided with a resting ring for resting on a resting plane.

[0014] It is further configured as follows: the number of the retaining ribs is the same as the number of the rotational grooves and they are arranged in a one-to-one correspondence and extend in the same direction.

[0015] It is further configured as follows: a protrusion is provided on the rear side of each clamping foot of the fixing knob, the protrusion is located on the front side of the placing ring and the two cooperate to form a bayonet structure for the retaining rib to be clamped into.

[0016] It is further configured that: a protrusion is provided on the front end surface of the horizontal extension section of the retaining rib corresponding to the connection between the insertion opening and the limiting opening of the rotation groove.

[0017] It is further configured as follows: the retaining rib is a ""-shaped structure rotated 90° counterclockwise.

[0018] It is further configured that: the concave cavity is provided with a second sink structure corresponding to its opening for embedding the air inlet cover.

[0019] It is further configured that: a filter assembly is installed in the space between the cavity and the air inlet cover.

[0020] Compared with the prior art, the utility model has a simple and reasonable structure. The air inlet cover and the concave cavity are fixedly connected by a fixing knob that passes through the guide tube portion of the air inlet cover and is rotated and clamped on the fixing seat of the concave cavity. This greatly simplifies the disassembly and assembly of the air inlet cover and also improves the matching stability between the air inlet cover and the concave cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a blowing device of the utility model;

[0022] Figure 2 It is a schematic diagram of the separation structure of a blowing device corresponding to the air inlet structure of the utility model;

[0023] Figure 3 is a schematic diagram of a separation structure of an air inlet structure of another specific implementation structure;

[0024] Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure of the middle concave cavity component;

[0025] Figure 5 yes Figure 3 A schematic diagram of the three-dimensional structure of the middle air inlet cover;

[0026] Figure 6 yes Figure 3 Schematic diagram of the three-dimensional structure of the fixed knob.

[0027] The following reference numerals are marked on the drawings in conjunction with the drawings:

[0028] 10. Equipment body; 20. Air outlet structure; 30. Air inlet structure; 31. Concave cavity; 311. Fixed seat; 312. First sink; 313. Rotary groove; 3131. Insertion opening; 3132. Limit opening; 314. Positioning rib; 315. Second sink; 32. Air inlet cover; 320. Guide tube; 321. Positioning notch; 322. Stop rib; 3221. Horizontal extension section; 3222. Protrusion; 33. Fixing knob; 331. Card foot; 3311. Hook; 332. Shelving ring; 333. Bump; D1. Thickness at the hook; D2. Main body thickness of the card foot; D3. Width of the insertion opening; D4. Width of the limit opening. DETAILED DESCRIPTION

[0029] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0030] The utility model discloses a blowing device such as Figure 1As shown, the device body 10 includes a device body 10, the internal structure of which is provided with a fan cavity for installing a fan, the device body 10 is provided with an air outlet structure 20 connected to the fan cavity corresponding to its front end structure and is provided with an air inlet structure 30 connected to the fan cavity corresponding to its rear end structure, and the air outlet structure 20 is generally connected to the grip handle through an air duct; in this way, the device body 10 draws external airflow into the interior through the air inlet structure 30 at the rear end through the operation of the fan and blows it out from the air outlet structure 20 at the front end after heating.

[0031] Specific as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the air outlet structure 20 includes a concave cavity 31 structurally arranged on the device body 10, an air inlet cover 32 covering the opening of the concave cavity 31, and a fixed knob 33 connected between the air inlet cover 32 and the concave cavity 31. A space for accommodating a filter component such as a sponge and a filter net is formed between the air inlet cover 32 and the concave cavity 31. The filter component can effectively remove foreign matter carried in the inhaled airflow. The bottom and / or side wall of the concave cavity 31 are provided with a through opening connected to the fan cavity; wherein the concave cavity 31 can be a part of the device body 10 ( Figure 2 ) or a separate component having a cavity 31 ( Figure 3), a fixing seat 311 is provided at the bottom of the concave cavity 31, and at least two rotating grooves 313 are provided at intervals on the end surface of the fixing seat 311, and the rotating groove 313 includes an insertion opening 3131 and a limiting opening 3132 connected to the insertion opening 3131; a guide tube portion 320 opposite to the fixing seat 311 is provided on the air inlet cover 32; the fixing knob 33 is inserted into the concave cavity 31 through the guide tube portion 320 of the air inlet cover 32 The fixing seat 311 is used to realize the fixed connection between the air inlet cover 32 and the concave cavity 31. The front end of the fixing knob 33 corresponding to the insertion direction is provided with at least two clamping feet 331 which are matched with the screw-on groove 313 in a one-to-one manner. Each clamping foot 331 is provided with a hook part 3311 which is matched with the inner wall of the edge of the limiting mouth 3132 on the inner side wall and / or the outer side wall corresponding to the front end thereof. The thickness D1 of the clamping foot 331 corresponding to the hook part 3311 is less than or equal to the thickness D2 of the insertion mouth 3132. The width D3 of 3131 is greater than the width D4 of the limiting mouth 3132, and the main body thickness D2 of the clamping foot 331 is less than or equal to the width D4 of the limiting mouth 3132. Such a structure allows the end of the clamping foot 331 to be inserted into the screw-on groove 313 through the insertion mouth 3131 and the hook 3311 of the clamping foot 331 to be screwed into the limiting mouth 3132 by rotation to achieve anti-detachment cooperation and connection between the clamping foot 331 and the screw-on groove 313. At the same time, a constraint structure for limiting the detachment of the air inlet cover 32 is provided between the fixing knob 33 and the air inlet cover 32. In this way, the constraint structure and the cooperation between the clamping foot 331 and the screw-on groove 313 can achieve a stable cooperation and connection between the air inlet cover 32 and the concave cavity 31, which effectively simplifies the disassembly and assembly of the air inlet cover 32 and ensures the installation stability of the air inlet cover 32. The air inlet structure of this patent is suitable for the air inlet of hair-drying equipment such as pet water blowers and hair dryers.

[0032] like Figure 4 and Figure 5As shown, a first sunken platform 312 for inserting the guide tube portion 320 of the air inlet cover 32 is recessed on the corresponding end surface of the fixing seat 311, at least two rotation grooves 313 are arranged on the bottom of the first sunken platform 312, and at least one positioning notch 321 is arranged on the front port of the guide tube portion 320, and a positioning rib 314 matching the positioning notch 321 is correspondingly arranged on the first sunken platform 312, so that the rotation of the air inlet cover 32 can be effectively restricted by matching the positioning notch 321 with the positioning rib 314, thereby ensuring the effectiveness of the rotation of the fixing knob 33; at the same time, a plurality of retaining ribs 322 with horizontal extension sections 3221 are arranged at circumferential intervals on the inner wall of the guide tube portion 320 corresponding to the rear port, and the ends of two adjacent retaining ribs 322 are spaced apart. A channel is formed in the middle for inserting the clamping pin 331, and the rear end surfaces of the plurality of horizontal extension sections 3221 cooperate to form a resting plane. The rear end of the fixed knob 33 has a resting ring 332 for resting on the resting plane of the guide tube portion 320, so that the resting ring 332 of the fixed knob 33 cooperates with the resting plane of the guide tube portion 320 to form a constraint structure for limiting the air inlet cover 32 from being separated from the fixed knob 33; preferably, the number of the retaining ribs 322 is the same as the number of the rotational grooves 313 and they are arranged in the same direction in a one-to-one corresponding manner. Preferably, when the positioning notch 321 of the guide tube portion 320 of the air inlet cover 32 cooperates with the positioning rib 314 of the fixing seat 311, the two end portions of the horizontal extension section 3221 are arranged correspondingly to the two end portions of the rotational groove 313.

[0033] In the above scheme, if Figure 5 and Figure 6The cam 332 is a substantially parallelogram of the first and second projections on the second cam 333. The cam 332 is a substantially parallelogram of the first and second projections on the second cam 333. The cam 332 is a substantially parallelogram of the first and second projections on the second cam 333. The cam 332 is a substantially parallelogram of the first and second projections on the second cam 333. The fixing knob 33 is initially combined with the air inlet cover 32, and then the air inlet cover 32 engaged with the fixing knob 33 is aligned and covered on the opening of the concave cavity 31. Since the retaining rib 322 corresponds to the rotation groove 313, by controlling the rotation angle when the fixing knob 33 is combined with the air inlet cover 32, it can be ensured that the clamping foot 331 of the fixing knob 33 is just aligned with the insertion opening 3131 of the rotation groove 313, so that the positioning notch 321 of the guide tube part 320 can be clamped into the positioning rib 314 while the clamping foot The cam 331 is inserted into the rotation groove 313 through the insertion opening 3131; further preferably, the front end of the horizontal extension section 3221 of the retaining rib 322 is provided with a protrusion 3222 at the connection between the insertion opening 3131 of the rotation groove 313 and the limiting opening 3132, so that when the fixing knob 33 is combined with the air inlet cover 32, the protrusion 333 is controlled not to go over the protrusion 3222 to ensure that the air inlet cover 32 is positioned and installed on the concave cavity 31. 3131 are arranged relative to each other, and the foot 331 can be clamped into the limiting opening 3132 of the screw-on groove 313 by controlling the protrusion 333 to rotate over the protrusion 3222, so that the air inlet cover 32 and the concave cavity 31 can be conveniently and securely connected through the fixing knob 33; further preferably, the retaining rib 322 is a ""-shaped structure that is rotated 90° counterclockwise, so that excessive force can be avoided when the fixing knob 33 is combined with the air inlet cover 32, which directly causes the protrusion 333 to be screwed out of the retaining rib 322 area.

[0034] In some specific embodiments, such as Figure 4 As shown, the concave cavity 31 is provided with a second sink 315 structure for embedding the air inlet cover 32 at its opening, which can effectively improve the combination of the concave cavity 31 and the air inlet cover 32 and ensure the integrity and aesthetics of the equipment body 10.

[0035] Compared with the prior art, the utility model has a simple and reasonable structure. The air inlet cover and the concave cavity are fixedly connected by a fixing knob that passes through the guide tube portion of the air inlet cover and is rotated and clamped on the fixing seat of the concave cavity. This greatly simplifies the disassembly and assembly of the air inlet cover and also improves the matching stability between the air inlet cover and the concave cavity.

[0036] The above disclosure is only an embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An air inlet structure of a blowing device, characterized in that: It includes a concave cavity structured on the device body, an air inlet cover covering the opening of the concave cavity, and a fixing knob connected between the concave cavity and the air inlet cover; A fixing seat is provided at the bottom of the concave cavity and at least two rotation grooves are provided on the fixing seat at intervals around the circumference, wherein the rotation groove includes an insertion opening and a limiting opening connected to the insertion opening; The air inlet cover is provided with a guide tube portion corresponding to the fixing seat; The fixing knob passes through the guide tube portion of the air inlet cover and is fixedly inserted on the fixing seat of the concave cavity. The front end of the fixing knob corresponding to the insertion direction is provided with at least two clamping feet that match the rotation grooves one by one. The inner wall and / or outer wall of the front end of the clamping feet are provided with hooks that match the inner wall of the edge of the limiting mouth. The thickness of the clamping feet at the hook part corresponding to the hook part is less than or equal to the width of the insertion mouth and greater than the width of the limiting mouth. The main body thickness of the clamping feet is less than or equal to the width of the limiting mouth. A restraining structure for limiting the separation of the air inlet cover is arranged between the fixing knob and the air inlet cover.

2. The air inlet structure of a blowing device according to claim 1, characterized in that: A first sinking platform for inserting the guide tube portion of the air inlet cover is concavely arranged on the corresponding end surface of the fixing seat, and at least two of the rotation grooves are arranged on the bottom of the first sinking platform; At least one positioning notch is arranged on the front end of the guide tube portion, and a positioning rib matching the positioning notch is correspondingly arranged on the first sinking platform.

3. The air inlet structure of a blowing device according to claim 1 or 2, characterized in that: A plurality of retaining ribs with horizontal extension sections are arranged at intervals around the inner wall of the guide tube portion corresponding to the rear port, a channel for inserting the clamping pin is formed between the ends of two adjacent retaining ribs, and the rear end surfaces of the horizontal extension sections of the plurality of retaining ribs cooperate to form a resting plane; The rear end of the fixing knob is provided with a resting ring for resting on a resting plane.

4. The air inlet structure of a blowing device according to claim 3, characterized in that: The number of the retaining ribs is the same as the number of the rotation grooves and they are arranged in a one-to-one correspondence and extend in the same direction.

5. The air inlet structure of a blowing device according to claim 4, characterized in that: The fixing knob is provided with a protrusion on the rear side corresponding to each clamping foot, and the protrusion is located on the front side of the placing ring and the two cooperate to form a bayonet structure for the retaining rib to be clamped into.

6. The air inlet structure of a blowing device according to claim 5, characterized in that: A protrusion is arranged on the front end surface of the horizontal extension section of the retaining rib corresponding to the connection between the insertion opening and the limiting opening of the rotation groove.

7. The air inlet structure of a blowing device according to claim 5 or 6, characterized in that: The retaining rib is a """-shaped structure rotated 90° counterclockwise.

8. The air inlet structure of a blowing device according to claim 1, characterized in that: The concave cavity is provided with a second sinking platform structure corresponding to its opening for embedding the air inlet cover.

9. The air inlet structure of a blowing device according to claim 1, characterized in that: A filter assembly is installed in the space between the concave cavity and the air inlet cover.

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