This article shows a hand-held electric hair curler, which includes a roller (2) that can blow hot air toward the hair, and the diameter of the roller (2) is adjustable to form curls of different diameters. The reel (2) is composed of a number of reel elements (3). In order to unwind or close the reel, these reel elements can move radially outward or inward. When being folded, the reel elements (3) overlap with each other, but The airflow can still be blown from the inner diameter hole (3d) of the roller (2) to the hair without any hindrance.
This article deals with hand-held electric hair curlers. The hair curler includes a handle through which the hair curler can be held; a roller protruding from the handle, on which the hair is rolled, and the roller is hollow to allow fluid to flow from it. There are holes in the drum to allow fluid to flow outwards to the hair. The diameter of the roll screen can be adjusted, which can be fully expanded or completely reduced to form rolls of different diameters.
When the curling iron of this paper is fully retracted, its diameter can be significantly reduced compared to the existing device. Another object of the present invention is to improve other hair curlers so that they can blow a large amount of hot and dry air to the hair.
The roller of the hair curler provided herein includes a plurality of elongated roller elements, which are arranged in the same direction along the radial direction to form an axisymmetric roller generally. These reel elements can move radially inward and outward together to reduce and expand the diameter of the reel. In the fully expanded state, the spool elements are connected to each other to form a substantially closed spool. In the reduced state, the respective reel elements in the substantially closed reel overlap. When the roller is fully unfolded, fully collapsed or in any intermediate state, the perforated roller element can allow fluid to flow directly from the interior of the roller to the hair.
The hair curler of the present invention has many advantages. First, its structure can reduce the diameter of the reel. Secondly, a large amount of air flow can flow directly from the inside of the drum to the hair.
Figure 1 is a side view of the thermal blowing brush of the present invention, the thermal blowing brush includes a diameter adjustable roll, the roll is in the unfolded state);
Figure 2 is a view similar to Figure 1, which shows a cross-sectional view of the reel;
Figure 3 is an enlarged exploded perspective view of the reel, the figure shows the main components;
Fig. 4 is an enlarged view of one of the components shown in Fig. 3, the so-called reel element;
Figures 4a and 4b show the two adjacent reel elements in the reel in a fully expanded and fully collapsed state, respectively;
Figures 5a and 5b are cross-sectional views at A-A in Figure 2, which respectively reflect the two states of expansion and collapse;
Fig. 6 and Fig. 7 are similar to Fig. 2, but the adjustable mechanical components of the reel are enlarged. Figure 6 shows the outer end of the reel, and Figure 7 shows the inner end of the reel.
Fig. 8 is similar to Fig. 3, showing another structure of the hot air brush.
And Figure 9 is a side view of the reel, which shows another adjustable mechanism.
Turning now to Figures 1-7, the hot blowing brush includes a fixed handle 1, a roller 2 for brushing hair, and a hot air blower (not shown in the figure). The hot air blower is installed in the fixed handle 1 to heat the air. Then, the hot air is directly discharged along the drum 2 through the holes described below, and the hair is heated while brushing.
The reel 2 is composed of six elongated reel elements 3, which are arranged radially in the same direction with each other to form a substantially cylindrical reel. Each spool element 3 includes a base 3a, a row of protruding brush teeth 3b, and a tree surface protrusion 3c is measured on the base 1 to serve as a base for adjacent element bases 3a. There is a row of holes 3d on the base 3a, and a row of notches on the side protrusions 3c. Each reel element 3 is integrally made of plastic, and metal reinforcing ribs 3f are added to it. Figure 5b shows the roll 2 with the bases 3a stacked on top of each other in the fully collapsed state. Figure 5a shows the roll 2 with gaps between the bases 3a in the fully unfolded state, and the side protrusions 3c close these gaps. The gap closure can ensure that the reel 2 is basically airtight, so that the hot air only passes through the hole 3d from the reel.
内出流。 Inside out. The outer diameter of the reel 2 is 14mm in the fully collapsed state, and in the fully expanded state
In the state, it is 21mm.
It can be clearly seen from Figures 4a and 4b that the holes 3d are always unobstructed, which can make a large amount of dry hot air blow directly from the inside of the drum 2 to the hair, and the hot air blower will not present reverse pressure or overheating danger. As shown in Fig. 4a, when the reel 2 is in a fully expanded state, the gas is discharged through the hole 3d and the notch 3e. As shown in Fig. 4b, when the roll 2 is in the fully collapsed state, the notch 3e moves to be aligned with the hole 3d, so that the hole remains unobstructed.
The user can expand or collapse the reel 2 by means of the adjustable knob 4 on the top of the reel. The user pinches the knob 4 and depresses the knob against the spring bias in the direction of the handle 1 along the axial direction of the reel 2 to disengage the knob 4 from the locking mechanism, and then turns the knob 4 in a clockwise direction to unfold the reel 2. Or turn the knob counterclockwise to close the reel 2. Subsequently, the knob 4 is released, so that under the action of the spring bias, the knob moves in the opposite direction along the axis of the reel 2 and engages with the locking mechanism again to prevent it from continuing to rotate.
The locking mechanism will be described below. The fixed central shaft 5 protrudes from the handle 1. At the outer end of the fixed central shaft 5 there is a gasket 6 and a cap 7″. At this end of the shaft 5 there is also a flange 8 fixedly mounted on the cap 7 and the gasket. On the inner side of 6, there are gear teeth 8a on the outer circumference of the flange, and teeth 4a on the inner mesh circumference of the adjusting knob 4. Figure 6 reflects the normal position of the tooth, which is in line with the teeth of the flange 8. 8a is engaged and can therefore prevent the rotation of the adjusting knob 4. The adjusting knob 4 is held in the normal position by the spiral compression spring 9, which biases the adjusting knob 4 to move toward the outer end of the shaft 5.
And close to the gasket 6.
Now we will describe the adjustment mechanism. When the adjustment knob 4 is pressed against the action of the spiral compression spring 9, the teeth 4a protruding from the inside of the adjustment knob 4 will move instead of engaging with the teeth 8a protruding from the flange 8. In this way, the adjustment knob can be turned. The continuous rotation of the adjusting button 4 causes the nut 10 to rotate correspondingly, and the adjusting button 4 and the nut 10 are meshed together through gears 4a and 10a. The nut 10 is screwed on an external thread 11 a on the screw of the front cam 11, and the cam is slidably mounted on the central shaft 5. Double helix threading is used to make it particularly firm. The nut 10 is installed at a fixed axial position between the front cam cover 18 and the flange 8. Therefore, the rotation of the adjusting knob 4 and the successive rotation of the nut 10 cause the front cam 11 to move along the longitudinal axis. The connecting rod 13 transmits the axial movement of the front cam 11 to the rear cam 12, and the rear cam is also slidably mounted on the central shaft 5. When the front and rear cams 11, 12 move axially, the spool element 3 can be prevented from moving axially with the help of a stopper 16, which is mounted on the central shaft by a locking pin 19 (best shown in Figure 6) 5, and the reel element 3 is stuck on the cams 11 and 12 back and forth. Therefore, the reel 2 can be expanded or collapsed in the radial direction. The cams 11, 12 are placed in the front cam cover 18 and the rear cam cover 17, respectively. The front cam cover 18 is mounted on the stopper 16, and the rear cam cover 17 is mounted on the central shaft 5, from which air can flow into the drum 2.
Now, the cooperative action of the reel element 3, the cams 11, 12 and the connecting rod 13 will be further explained. Each drum element 3 has a pair of inclined side grooves on the outer end, which form an angled neck 20 so as to be embedded in the inclined radial groove 21 of the eight front cam 1 1. The inner end of the reel element 3 has an inclined portion 3g, so that the six reel elements are combined into a tapered inner end, the maximum diameter of which is substantially the same as the diameter of the handle 1, so that a large amount of air can flow into the reel. There is a large triangular hole 3b on each inclined part to send air to the outer surface of the curled hair and eliminate the increase in air pressure to prevent the hot air blower from overheating. In addition, each inclined portion has an inclined neck 22 as its terminal end, and this end is inserted into the inclined radial groove on the rear cam 12
2 3 in. As shown in Figure 7, the connecting rod 13 plate is placed next to the central axis 5, and at each end of it is provided a right-angle elbow 13a that turns outward. They are respectively snapped into the holes 2 4 and 25, and these holes Set on the front and rear cams 1 1 and 1 2 respectively.
Figures 8 and 9 show another embodiment. In this embodiment, the diameter of the reel 102 is adjusted by a thumb button 104 provided at the inner end of the reel. This arrangement can be done with only one hand. Hold the curling iron, and use your thumb to adjust the diameter of the roller. However, in this example, there is no locking mechanism to prevent knob 1 04 from turning. The assembly includes: a shaft mounted on the fixed clip 130, and the fixed clip is mounted on the handle (not shown), a fixed central shaft 105, and a front cam 11 mounted on the shaft 105 , A rear cam 112 mounted on the shaft 105, a front cam cover, 118, washer, 106, cap 107 and screw 108, reel element 103, reel element reinforcing rod 103f, and a suitable for mounting on the button 104 Inside the heat shield 131. An indispensable part of this component is the puller element 132. Its support, foot 132a is embedded in the gap 112a on the rear cam 112, so the part cannot be rotated, but it can be moved along the 105 axis. To move freely. The tensioning member 132 is provided with three external protrusions 132b arranged equidistantly in space, which cooperate with the spiral groove 104a on the inner surface of the rotatable knob 104.
When the knob 104 is turned, the protrusion 132b and the groove 104a act together to make the tension member 132 move axially along the shaft 105, because the neck portion 1 03a of each reel element 103 is embedded in the corresponding cap 1 of the tension member 1 32 In 32c, this axial movement is also transmitted to the reel element 103. When the reel element 103 moves in the axial direction, they are locked on the front and rear cams 111 and 112 respectively, causing the reel 102 Expand or collapse.
The present invention is not limited to hot air brushes, and the present invention can also be applied to various hair care tools such as curling tongs.