Air inlet hidden type electric hair drier structure

Abstract

An air inlet hidden type electric hair drier structure comprises an air cylinder, a handle arranged on the air cylinder, an air hole formed in the air cylinder, a fan located in the air hole, a motor used for driving the fan to rotate, an air inlet formed in one end of the air hole, an air door used for closing and opening the air inlet and a spiral spring used for driving the air door to return to the original position. The motor drives the fan to rotate so that air can enter from the air inlet and flow out from the air outlet, flowing air forces the air door to open the air inlet, the spiral spring drives the air door to close the air inlet after the motor stops working, and dust or tiny foreign matter can be effectively prevented from entering by closing the air inlet in the placing state. The interior of the electric hair dryer is kept clean, the failure rate of equipment is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryers, and in particular discloses a structure of a hair dryer with hidden air inlet. Background Art

[0002] The hair dryer is a household appliance that is often used in daily life. It is mainly used for drying hair and styling hairstyles. The hair dryer relies on a fan to drive the blades to rotate. When the blades rotate, air is sucked in from the air inlet. The centrifugal airflow formed is then blown out from the wind nozzle at the front of the hair dryer to achieve the purpose of drying and shaping. The hair dryer works very frequently, but the usage time is short. If it is left idle for a long time, it is easy to absorb dust and smaller foreign objects may fall into it. Long-term accumulation will affect the normal operation of the motor and easily cause equipment failure. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a structure of a hair dryer with hidden air inlet, including a hair dryer and a handle arranged on the hair dryer, characterized in that: the hair dryer is provided with an air hole, a fan located in the air hole, and an electric motor for driving the fan to rotate, an air inlet is provided at one end of the air hole, the hair dryer is provided with a damper for closing and opening the air inlet, and a spiral spring for driving the damper to return to its original position, an air outlet is provided at the other end of the air hole, the motor drives the fan to rotate so that air enters from the air inlet and flows out from the air outlet, the flowing air forces the damper to open the air inlet, and after the motor stops working, the spiral spring drives the damper to close the air inlet. Closing the air inlet in the placed state effectively prevents dust or tiny foreign matter from entering, keeps the inside of the hair dryer clean, and improves the service life of the components in the air hole.

[0004] Furthermore, the wind tube is provided with an inner tube and an outer tube, the fan and the motor are located in the inner tube, the outer tube is sleeved on the outer side of the inner tube, the air hole passes through the outer tube, the damper is movably arranged at the air inlet of the outer tube, and the handle is arranged on the outer tube.

[0005] Furthermore, support shafts are provided at two ends of the air inlet of the outer cylinder that are far away from each other. The support shaft is provided with a coil spring. The main body of the coil spring is arranged on the support shaft. The spring end of the coil spring extends to connect the damper, and the damper is rotatably arranged on the outer cylinder.

[0006] Furthermore, the damper is provided with two pieces in a semicircular shape, the two dampers are respectively located on both sides of the supporting shaft, and the two spring ends of the spiral spring are respectively connected to the two dampers.

[0007] Furthermore, two ends of the damper close to the supporting shaft and far from each other are provided with rotating shafts, and the rotating shafts are rotatably arranged on the inner wall of the outer cylinder.

[0008] Furthermore, the inner tube is also provided with an inner air outlet, which is located inside the outer tube. An air inlet net is provided at the inner air outlet. The maximum radius of rotation of the damper with the rotating shaft as the center is R, and the vertical distance from the rotating shaft to the air inlet net is L, L≥0.8 times R.

[0009] Furthermore, the inner cylinder is provided with an air inlet net covering the inner air outlet, the air inlet net is provided with a plurality of micro holes penetrating the air inlet net, and the fan and the motor are located at one end close to the inner air inlet net.

[0010] Furthermore, the inner wall of the outer cylinder is provided with a convex strip, and the outer wall of the inner cylinder is provided with a groove, and the convex strip is inserted into the groove to fix the connection between the inner cylinder and the outer cylinder.

[0011] Furthermore, the inner tube consists of three parts: an air outlet section, an upper shell and a lower shell. The air outlet is located at the end of the air outlet section away from the upper shell and the lower shell. The upper shell, the lower shell and the air outlet section are snap-connected in sequence. The end of the upper shell and the lower shell close to the air inlet net is used to accommodate a fan and a motor. A mica sheet bracket is provided in the air outlet section, and a heating element is wound around the mica sheet bracket.

[0012] Furthermore, the outer cylinder and / or the air outlet section is provided with a covering portion located at the air outlet, and the covering portion is provided with a plurality of arc-shaped through holes penetrating the covering portion, and the through holes are arranged in concentric rings.

[0013] Beneficial effects of the utility model: the utility model has a structure of a hidden air inlet hair dryer. When the motor is in working state, the internal air pressure becomes smaller, and the air pressure forces the air door to open automatically. When the motor is not in working state, the air door is automatically closed in time, effectively preventing dust and small foreign objects from entering and affecting the equipment. The appearance is more beautiful after the air door is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is an exploded view of the utility model;

[0016] Figure 3 This is a structural diagram of the inner cylinder and outer cylinder of the air duct of the utility model;

[0017] Figure 4 This is a structural diagram of the air door of the utility model;

[0018] Figure 5 Another perspective view of the outer tube of the air duct of the utility model;

[0019] Figure 6 This is a structural diagram of the air outlet of the utility model;

[0020] Figure 7 This is a structural diagram of the air inlet net of the utility model;

[0021] Figure 8 It is a schematic diagram of the partial cross-sectional structure from the air inlet to the air inlet net and the movement trajectory of the air door of the utility model.

[0022] Reference numerals include:

[0023] 1--wind cylinder 2--handle 10--wind hole 11--inner cylinder 110--fan 111--motor 1 inner air outlet 114--air inlet net 1141--micropore 115--groove 116--air outlet section 1161--mica sheet bracket 117--upper shell 118--lower shell 12--outer cylinder 121--air inlet 122--damper 1221--rotating shaft 123--air outlet 124--support shaft 1243--coil spring 1244--spring end 125--convex strip 126--covering portion 1261--through hole. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0025] See also Figures 1 to 8 As shown, the utility model is a structure of a hidden air inlet hair dryer, comprising a hair dryer 1 and a handle 2 arranged on the hair dryer 1, characterized in that: the hair dryer 1 is provided with an air hole 10, a fan 110 located in the air hole 10, and a motor 111 for driving the fan 110 to rotate, an air inlet 121 is provided at one end of the air hole 10, the hair dryer 1 is provided with a damper 122 for closing and opening the air inlet 121, and a spiral spring 1243 for driving the damper 122 to return to its original position, an air outlet 123 is provided at the other end of the air hole 10, the motor 111 drives the fan 110 to rotate so that air enters from the air inlet 121 and flows out from the air outlet 123, the flowing air forces the damper 122 to open the air inlet 121, and after the motor 111 stops working, the spiral spring 1243 drives the damper 122 to close the air inlet 121, and closing the air inlet 121 in the non-working state effectively prevents dust or tiny foreign matter from entering, keeps the inside of the hair dryer clean, and improves the service life of the motor.

[0026] The air cylinder 1 is provided with an inner cylinder 11 and an outer cylinder 12, a fan 110 and a motor 111 are located in the inner cylinder 11, the outer cylinder 12 is sleeved on the outside of the inner cylinder 11, the air hole 10 passes through the outer cylinder 12, a damper 122 is movably arranged at an air inlet 121 of the outer cylinder 12, a handle 2 is arranged on the outer cylinder 12, the inner cylinder 11 is used for installing components such as the fan 110 and the motor 111, the outer cylinder 12 is used for sealing and protecting the inner cylinder 11, a damper 122 is installed at the air inlet 121 of the outer cylinder 12, and the damper 122 is automatically closed when not in operation, thereby effectively preventing dust or foreign matter from entering the air hole 10, thereby protecting the cleanliness of the internal components and improving the service life of the product.

[0027] A support shaft (124) is provided between the two air inlets (121) of the outer cylinder (12), and the support shaft 124 is provided with a coil spring 1243. The main body of the coil spring 1243 is arranged on the support shaft 124, and the spring end 1244 of the coil spring 1243 extends to connect to the damper 122. The damper 122 is rotatably arranged on the outer cylinder 12. The support shaft 124 is fixedly mounted on the air inlet 121 of the outer cylinder 12 to support the coil spring 1243. The spring end 1244 of the coil spring 1243 is fixedly connected to the damper 122. When the motor 111 is in working state, the motor 111 drives the fan 110 to pump air toward the air outlet 123 end, and negative pressure is formed between the air cylinder 1 and the outside of the air cylinder 1. The negative pressure forces the damper 122 to open inwardly. After the hair dryer is turned off, the negative pressure disappears, and the coil spring 1243 rebounds to force the damper 122 to close.

[0028] The damper 122 is semicircular and has two pieces. The two dampers 122 are respectively located on both sides of the support shaft 124. The two spring ends 1244 of the spiral spring 1243 are respectively connected to the two dampers 122. The support shaft 124 evenly divides the air inlet 121 into two semicircles. Combined with the two semicircular dampers 122, the sealing effect is maximized when the motor 111 is not working. When the damper 122 is open, the air inlet 121 is also expanded to the maximum extent, thereby increasing the air flow of the air hole 10.

[0029] The damper 122 has two ends that are away from each other near the support shaft 124 and are provided with rotating shafts 1221, which are rotatably arranged on the inner wall of the outer cylinder 12. The rotating shaft 1221 rotatably arranges the damper 122 on the inner wall of the outer cylinder 12 so that the damper 122 can be opened and closed repeatedly.

[0030] The inner tube 11 is also provided with an inner air port 113, which is located inside the outer tube 12. Figure 8, showing a schematic structure of the damper 122 rotating and opening process, the maximum radius of the damper 122 rotating around the shaft 1221 is R, the vertical distance from the shaft 1221 to the air inlet net 114 is L, L ≥ 0.8 times R, the distance L is to ensure that the damper 122 is opened at a rotation angle of 1 to 90 degrees in the outer cylinder 12, when L = 0.8 times R, the length of L is the shortest, and the damper 122 can be opened at a relatively large angle.

[0031] The inner cylinder 11 is provided with an air inlet net 114 covering the inner air outlet 113. The air inlet net 114 is provided with a plurality of micro holes 1141 penetrating the air inlet net 114. The fan 110 and the motor 111 are located at one end close to the inner air inlet net 114. The air inlet net 114 prevents the damper 122 from opening when the hair dryer is used, so that foreign objects can enter and damage the fan 110, the motor 111 and other components.

[0032] The inner wall of the outer cylinder 12 is provided with a convex strip 125, and the outer wall of the inner cylinder 11 is provided with a groove 115. The convex strip 125 is inserted into the groove 115 to fix the connection between the inner cylinder 11 and the outer cylinder 12. If the inner cylinder 11 and the outer cylinder 12 are not connected by the groove 115 and the convex strip 125, they are prone to looseness and the user experience is poor.

[0033] The inner cylinder 11 consists of an air outlet section 116, an upper shell 117, and a lower shell 118. The air outlet 123 is located at one end of the air outlet section 116 away from the upper shell 117 and the lower shell 118. The upper shell 117, the lower shell 118, and the air outlet section 116 are snap-connected in sequence. One end of the upper shell 117 and the lower shell 118 close to the air inlet net 114 is used to accommodate the fan 110 and the motor 111. A mica sheet bracket 1161 is provided in the air outlet section 116. A heating element is wound around the mica sheet bracket 1161. The motor 111 drives the fan to rotate, so that the air is heated by the heating element wound around the mica sheet bracket 1161 and then flows out from the air outlet 123, thereby increasing the experience and speeding up the drying of the hair. The snap connection between the upper shell 117 and the lower shell 118 facilitates the installation of internal components and improves work efficiency.

[0034] The outer cylinder 12 and / or the air outlet section 116 are provided with a covering portion 126 located at the air outlet 123. The covering portion 126 is provided with a plurality of arc-shaped through holes 1261 penetrating the covering portion 126. The through holes 1261 are arranged in concentric rings and match the heating element wound on the mica sheet bracket 1161, which is conducive to the shorter and faster outflow of the airflow after heating. At the same time, the covering portion 126 appropriately reduces the area of ​​the air outlet 123, increases the airflow pressure, increases the airflow velocity, accelerates the drying speed, and improves the experience effect.

[0035] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A structure of a hair dryer with hidden air inlet, comprising a hair dryer (1) and a handle (2) arranged on the hair dryer (1), characterized in that: The wind tube (1) is provided with a wind hole (10), a fan (110) located in the wind hole (10), and a motor (111) for driving the fan (110) to rotate; an air inlet (121) is provided at one end of the wind hole (10); the wind tube (1) is provided with a damper (122) for closing and opening the air inlet (121), and a spiral spring (1243) for driving the damper (122) to return to its original position; an air outlet (123) is provided at the other end of the wind hole (10); the motor (111) drives the fan (110) to rotate so that air enters from the air inlet (121) and flows out from the air outlet (123); the flowing air forces the damper (122) to open the air inlet (121); and after the motor (111) stops working, the spiral spring (1243) drives the damper (122) to close the air inlet (121).

2. The structure of a hair dryer with hidden air inlet according to claim 1, characterized in that: The wind tube (1) is provided with an inner tube (11) and an outer tube (12); a fan (110) and a motor (111) are located in the inner tube (11); the outer tube (12) is sleeved on the outer side of the inner tube (11); an air hole (10) passes through the outer tube (12); a damper (122) is movably arranged at an air inlet (121) of the outer tube (12); and a handle (2) is arranged on the outer tube (12).

3. The structure of a hair dryer with hidden air inlet according to claim 2, characterized in that: A support shaft (124) is provided between the two air inlets (121) of the outer cylinder (12); the support shaft (124) is provided with a coil spring (1243); the main body of the coil spring (1243) is arranged on the support shaft (124); the spring end (1244) of the coil spring (1243) extends to connect to the damper (122); and the damper (122) is rotatably arranged on the outer cylinder (12).

4. The structure of a hair dryer with hidden air inlet according to claim 3, characterized in that: The damper (122) is semicircular and has two pieces. The two dampers (122) are respectively located on both sides of the support shaft (124). The two spring ends (1244) of the spiral spring (1243) are respectively connected to the two dampers (122).

5. The structure of a hair dryer with hidden air inlet according to claim 3, characterized in that: Two ends of the damper (122) that are away from each other and close to the support shaft (124) are provided with rotating shafts (1221), and the rotating shafts (1221) are rotatably arranged on the inner wall of the outer cylinder (12).

6. The structure of a hair dryer with hidden air inlet according to claim 1, characterized in that: The inner cylinder (11) is further provided with an inner air port (113), the inner air port (113) being located inside the outer cylinder (12), the maximum radius of rotation of the air door (122) with the rotating shaft (1221) as the center being R, the vertical distance from the rotating shaft (1221) to the air inlet net (114) being L, and L being ≥ 0.8 times R.

7. The structure of a hair dryer with hidden air inlet according to claim 6, characterized in that: The inner cylinder (11) is provided with an air inlet net (114) covering the inner air outlet (113); the air inlet net (114) is provided with a plurality of micro holes (1141) penetrating the air inlet net (114); and the fan (110) and the motor (111) are located at one end close to the inner air inlet net (114).

8. The structure of a hair dryer with hidden air inlet according to claim 2, characterized in that: The inner wall of the outer cylinder (12) is provided with a convex strip (125), and the outer wall of the inner cylinder (11) is provided with a concave groove (115). The convex strip (125) is inserted into the concave groove (115) to fix the connection between the inner cylinder (11) and the outer cylinder (12).

9. The structure of a hair dryer with hidden air inlet according to claim 2, characterized in that: The inner cylinder (11) is composed of three parts: an air outlet section (116), an upper shell (117), and a lower shell (118); an air outlet (123) is located at one end of the air outlet section (116) away from the upper shell (117) and the lower shell (118); the upper shell (117), the lower shell (118), and the air outlet section (116) are snap-connected in sequence; one end of the upper shell (117) and the lower shell (118) close to the air inlet net (114) is used to accommodate a fan (110) and a motor (111); a mica sheet bracket (1161) is provided in the air outlet section (116), and a heating element is wound around the mica sheet bracket (1161).

10. The structure of a hair dryer with hidden air inlet according to claim 9, characterized in that: The outer cylinder (12) or / and the air outlet section (116) is provided with a covering portion (126) located at the air outlet (123); the covering portion (126) is provided with a plurality of arc-shaped through holes (1261) penetrating the covering portion (126); the through holes (1261) are arranged in a concentric ring.

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