Portable fan

Abstract

The utility model provides a portable fan which comprises a shell, an air inlet cavity, a fixing cavity and an air duct are sequentially arranged in the length direction of the shell, the shell is further provided with an air inlet and an air outlet, the air inlet communicates with the air inlet cavity, and the air outlet communicates with the air duct; the braking assembly is contained in the fixing cavity, the braking assembly sucks air from the air inlet, and the air passes through the air inlet cavity, the braking assembly and the air duct and then is blown out from the air outlet; wherein the air outlet is formed in the length direction of the air duct, an air suction opening is further formed in one side of the air outlet, and air from the outside of the portable fan is dragged and sucked by airflow blown out of the air outlet to pass through the air suction opening. The air suction opening is formed in one side of the air outlet, strong air is formed under the action of negative pressure air suction, and the air outlet effect is guaranteed under the condition that portability is considered.

Description

Technical Field

[0001] This application relates to the field of fan technology, specifically to a portable fan with good airflow performance. Background Technology

[0002] In recent years, people have been pursuing a more convenient life. In order to meet the needs of outdoor activities or other life scenarios, a variety of portable fan products have appeared on the market, such as handheld fans and neck fans.

[0003] Currently available portable fans vary in size. Some offer strong airflow, but their large size significantly reduces portability; others are smaller, but their weak airflow and poor performance result in a poor user experience. Therefore, designing a portable fan that is both compact and delivers effective airflow is a pressing issue that needs to be addressed. Summary of the Invention

[0004] In view of this, this application provides a portable fan that generates strong airflow by setting an air intake on one side of the air outlet, thereby ensuring airflow effect while taking into account portability.

[0005] This application provides a portable fan, comprising: a housing having an air inlet cavity, a fixed cavity, and an air duct sequentially arranged along its length; the housing also having an air inlet and an air outlet, the air inlet communicating with the air inlet cavity and the air outlet communicating with the air duct; and a braking assembly housed in the fixed cavity, the braking assembly drawing air in from the air inlet, passing through the air inlet cavity, the braking assembly, and the air duct, and then blowing it out from the air outlet; wherein the air outlet is arranged along the length of the air duct, and a suction port is also provided on one side of the air outlet, through which air from outside the portable fan is drawn in by the airflow blown out from the air outlet.

[0006] Furthermore, the housing includes a first wall and a second wall, a first side of the first wall is closedly connected to a first side of the second wall, a second side of the first wall is opposite to and spaced apart from a second side of the second wall, and the outer surface of the first wall and the inner surface of the second wall define the air outlet.

[0007] Furthermore, the housing also includes a third wall, which is disposed on the outer side of the second side of the second wall. The third wall is sheet-like, and the third wall is spaced apart from the second side of the second wall to form the air intake.

[0008] Furthermore, the distance between the third wall and the second side of the second wall is 2.7-3.1 mm, and the distance between the third wall and the second side of the first wall is 6.6-12.6 mm.

[0009] Furthermore, the first side of the first wall and the second side of the first wall extend in the same direction, and the second side of the first wall extends beyond the first side of the first wall; the first side of the second wall and the second side of the second wall extend in the same direction, and the second side of the second wall extends beyond the first side of the second wall; the depth of the air outlet is 15-23mm.

[0010] Furthermore, a Coanda surface is formed on the outer surface of the second side of the first wall, and the air outlet is arranged to guide airflow onto the Coanda surface.

[0011] Furthermore, one side of the third wall extends in the same direction as the second side of the second wall, and the other side of the third wall extends in the same direction as the second side of the first wall, and the other side of the third wall does not extend beyond the second side of the first wall; the air intake and the air outlet extend parallel to each other, and the air intake and the air outlet are arranged side by side along the length direction.

[0012] Furthermore, it also includes a control component, which includes a power supply unit for providing power to the braking component and a control unit for controlling the braking component. The power supply unit is electrically connected to the control unit, and the control unit is electrically connected to the drive plate. The housing is provided with the air inlet cavity, the fixed cavity, the air duct, and the receiving cavity in sequence along the length direction. The control component is housed in the receiving cavity, and the control unit includes a switch and an interface exposed outside the housing.

[0013] Furthermore, the length of the air duct is 4-6 times the length of the air inlet cavity, the maximum cross-sectional area of ​​the air duct is less than the minimum cross-sectional area of ​​the air inlet cavity, the maximum cross-sectional area of ​​the fixed cavity is less than or equal to the minimum cross-sectional area of ​​the air inlet cavity, and the minimum cross-sectional area of ​​the fixed cavity is greater than or equal to the maximum cross-sectional area of ​​the air duct; the diameter of the portion of the housing in the fixed cavity is 28-35mm, and the length of the housing in the fixed cavity is 30-40mm.

[0014] The portable fan is a neck fan. The housing is symmetrically provided with two air inlet chambers, two fixed chambers, and two air ducts. Two braking components are respectively provided in the two fixed chambers. When worn with the air outlet facing upward, the air generated by the braking components blows towards the user's head. Alternatively, when worn with the air outlet facing downward, the air generated by the braking components blows towards the user's neck.

[0015] Compared with the prior art, the portable fan of this application has the following advantages: by setting the air inlet on one side of the air outlet, the negative pressure suction creates a strong wind, ensuring the air output effect while taking into account portability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the portable fan described in this application;

[0017] Figure 2 This is a cross-sectional view of the portable fan of this application;

[0018] Figure 3 This is a partial exploded view of the portable fan of this application;

[0019] Figure 4 This is a cross-sectional view of the portable fan of this application from another angle;

[0020] Figure 5 yes Figure 4 Enlarged view of section D;

[0021] Figure 6 yes Figure 4 A diagram from another angle;

[0022] Figure 7 yes Figure 2 Enlarged view of section C;

[0023] Figure 8 This is a cross-sectional view of the braking component of this application. Detailed Implementation

[0024] To facilitate a better understanding of the purpose, structure, features, and effects of this application, the application will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0025] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component present.

[0026] In this application, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0027] In the description of this application, the terms "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] In one embodiment, such as Figures 1 to 3The diagram shows a portable fan according to this application. The portable fan includes a housing 1 and a braking assembly. The housing 1 has an air inlet chamber 13, a fixed chamber 14, and an air duct 15 arranged sequentially along its length. The housing 1 also has an air inlet 11 and an air outlet 12. The air inlet 11 is connected to the air inlet chamber 13, and the air outlet 12 is connected to the air duct 15. The braking assembly is housed in the fixed chamber 14. The braking assembly draws air in from the air inlet 11, passes through the air inlet chamber 13, the braking assembly, and the air duct 15, and then blows it out from the air outlet 12.

[0029] Among them, such as Figure 1 , Figure 3 and Figure 4 As shown, the air outlet 12 is arranged along the length of the air duct 15. The housing 1 has an inner surface 1A and an outer surface 1B. The air outlet 12 is defined by the inner surface 1A and the outer surface 1B, which are close to or overlap each other at the air outlet 12. The braking assembly is housed in the fixed cavity 14, thus making the portable fan safer. Because the air outlet 12 is defined by the inner surface 1A and the outer surface 1B of the housing 1, the blown air is strong, smooth, and uniform, providing a good user experience.

[0030] In one embodiment, such as Figures 4 to 6 As shown, the air outlet 12 has an outlet 121. At the outlet 121 of the air outlet 12, the distance between the inner surface 1A and the outer surface 1B is 1-5mm, which is conducive to the airflow being ejected from the outlet 121 of the air outlet 12, resulting in a larger airflow force.

[0031] In one embodiment, such as Figures 3 to 5 As shown, the housing 1 includes a first wall 1a and a second wall 1b, which are separately formed and then assembled. A first side of the first wall 1a is closedly connected to a first side of the second wall 1b, and a second side of the first wall 1a is opposite to and spaced apart from a second side of the second wall 1b. The outer surface 1B of the first wall 1a and the inner surface 1A of the second wall 1b define the air outlet 12. In this embodiment, the first and second sides of the first wall 1a extend in the same direction, and the second side of the first wall 1a extends beyond the first side of the first wall 1a; the first and second sides of the second wall 1b extend in the same direction, and the second side of the second wall 1b extends beyond the first side of the second wall 1b. The depth of the air outlet 12 is 15-23 mm. An air outlet 12 with a suitable depth can better rectify the airflow, reduce noise, and avoid turbulence.

[0032] In one embodiment, such as Figures 3 to 6As shown, the portable fan also includes a plurality of guide members 151, which are spaced apart along the length of the air duct 15. The guide members 151 are used to guide the airflow generated by the braking assembly toward the air outlet 12, and simultaneously abut against the first wall 1a and the second wall 1b. By providing the guide members 151, the airflow is rectified and guided, reducing noise and avoiding turbulence. It should be understood that there may be a gap between the outer surface 1B of the first wall 1a and the inner surface 1A of the second wall 1b, thereby defining the air outlet 12; alternatively, at least a portion of the outer surface 1B of the first wall 1a and the inner surface 1A of the second wall 1b may not be spaced apart, i.e., they may overlap. The guide members 151 then spread out the overlapping portion, thereby defining the air outlet 12.

[0033] In one embodiment, such as Figures 3 to 6 As shown, an air intake 1d is also provided on one side of the air outlet 12. Air from outside the portable fan is drawn in by the airflow blown out of the air outlet 12 through the air intake 1d. The housing 1 also includes a third wall 1c, which is located on the outer side of the second side of the second wall 1b. The third wall 1c is sheet-like, and is spaced apart from the second side of the second wall 1b to form the air intake 1d. By providing the air intake 1d on one side of the air outlet 12, external natural airflow can be drawn in on top of the air generated by the braking assembly, forming a larger but equally smooth and uniform airflow together with the airflow from the air outlet 12, resulting in a better user experience. The air intake 1d extends parallel to the air outlet 12, and the air intake 1d and the air outlet 12 are arranged side by side along the length direction, further enhancing the airflow effect.

[0034] In one embodiment, such as Figures 3 to 6 As shown, the distance between the second side of the third wall 1c and the second side of the second wall 1b is 2.7-3.1 mm, and the distance between the second side of the third wall 1c and the second side of the first wall 1a is 6.6-12.6 mm. The width of the air intake 1d is also small, allowing air to be ejected with greater force. The outer surface 1B of the second side of the first wall 1a has a Coanda surface, and the air outlet 12 is arranged to guide airflow onto the Coanda surface.

[0035] In one embodiment, such as Figures 3 to 6As shown, one side of the third wall 1c extends in the same direction as the second side of the second wall 1b, and the extension of one side of the third wall 1c exceeds the second side of the second wall 1b; the other side of the third wall 1c extends in the same direction as the second side of the first wall 1a, and the extension of the other side of the third wall 1c does not exceed the second side of the first wall 1a. The shallow depth of the air intake 1d facilitates the airflow from the air outlet 12 to draw in external airflow through the air intake 1d. Furthermore, since one side of the third wall 1c extends beyond the second side of the second wall 1b, the third wall 1c can better guide the airflow, resulting in a smoother and more uniform airflow between the air outlet 12 and the air intake 1d.

[0036] In one embodiment, such as Figures 1 to 3 As shown, the length of the air inlet cavity 13 is 20-30mm, and the length of the air duct 15 is 2-6 times the length of the air inlet cavity 13. The maximum cross-sectional area of ​​the air duct 15 is smaller than the minimum cross-sectional area of ​​the air inlet cavity 13, the maximum cross-sectional area of ​​the fixed cavity 14 is less than or equal to the minimum cross-sectional area of ​​the air inlet cavity 13, and the minimum cross-sectional area of ​​the fixed cavity 14 is greater than or equal to the maximum cross-sectional area of ​​the air duct 15. The cross-sections of the air inlet cavity 13, the fixed cavity 14, and the air duct 15 decrease along their lengths, and the transitions between adjacent air inlets 13, fixed cavities 14, and air ducts 15 are smooth. The air inlet cavity 13 is short in length but has a large cross-section, which is beneficial for air intake and airflow guidance, increasing the air intake volume. Furthermore, the air inlet cavity 13 effectively avoids turbulence and noise caused by direct contact between external airflow and the braking assembly. The cross-section of the air duct 15 is small, and the air generated by the braking component is pressurized and concentrated in the air duct 15 to enhance the air outlet effect; the length of the air duct 15 is long, which can increase the air outlet range and improve the blowing experience.

[0037] In one embodiment, such as Figures 1 to 3 As shown, the portion of the housing 1 within the fixing cavity 14 is cylindrical, with a diameter of 28-35 mm and a length of 30-40 mm. The smaller diameter of the fixing cavity 14 allows for a smaller overall cross-section of the housing 1, resulting in a relatively slender and well-proportioned neck fan that is easy to carry. The smaller length of the fixing cavity 14 also allows for a more reasonable design of the air duct 15 for airflow.

[0038] In one embodiment, such as Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the braking assembly includes a motor 2 and a fan 3. The motor 2 includes a cylinder 21, a stator assembly 22, and a rotor assembly 23. The motor 2 is a three-phase high-speed motor 2, which can provide high-speed and stable rotational speed, improving the airflow effect. At least a portion of the fan 3 is disposed within the cylinder 21. In this embodiment, the entire fan 3 is disposed within the cylinder 21. Therefore, the braking assembly has a compact and reasonable structure, and occupies a relatively short length of the cavity.

[0039] In one embodiment, such as Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the braking assembly further includes a buffer sleeve 33 disposed outside the cylinder 21. The buffer sleeve 33 includes an annular portion 331 and a plurality of protrusions 332 spaced around the outer surface 1B of the annular portion 331. When the braking assembly is received in the fixed cavity 14, at least a portion of the plurality of protrusions 332 is compressed, thereby the braking assembly can be securely fixed in the fixed cavity 14. The buffer sleeve 33 provides the braking assembly with strong friction and shock absorption capacity, effectively reducing the noise generated by the braking assembly.

[0040] In one embodiment, such as Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, a first limiting part 17 is provided between the fixed cavity 14 and the air inlet cavity 13, and a second limiting part 18 is provided between the fixed cavity 14 and the air duct 15. The buffer sleeve 33 also includes a wrapping part 333 connecting the two ends of the buffer sleeve 33. The wrapping part 333 at one end isolates and buffers the end of the cylinder 21 and the first limiting part 17, and the wrapping part 333 at the other end isolates and buffers the end of the cylinder 21 and the second limiting part 18. The wrapping part 333 further provides buffering and shock absorption capacity for the braking assembly, further reducing the noise generated by the braking assembly. In addition, the cooperation of the first limiting part 17, the second limiting part 18 and the wrapping parts 333 at both ends further limits the axial movement of the braking assembly. Therefore, the braking assembly is firmly fixed in the fixed cavity 14, and the braking assembly can generate air stably, continuously and with low noise. The material of the buffer sleeve 33 can be silicone, foam, or other materials with buffering capacity, without limitation. Of course, in other embodiments, the braking assembly may not have the buffer sleeve 33.

[0041] In one embodiment, such as Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the cylindrical body 21 includes an outer ring portion 211, an inner ring portion 212, and a plurality of connecting blades 213 connecting the outer ring portion 211 and the inner ring portion 212. The inner ring portion 212 is located on the side of the outer ring portion 211 near the air duct 15, and the inner ring portion 212 protrudes slightly towards the air duct 15. This allows for more space on the side of the outer ring portion 211 facing the air inlet cavity 13 to accommodate other structures, resulting in a reasonable spatial layout within the cylindrical body 21. A base plate 214 is provided inside the inner ring portion 212, and a hollow shaft cylinder 215 extends axially from the base plate 214 towards the air inlet cavity 13. The rotor assembly 23 includes a rotating shaft 231, a bearing 232, and a magnetic ring 233. The rotating shaft 231 and at least one bearing 232 are located within the shaft cylinder 215. In this embodiment, the number of bearings 232 is two, with both bearings 232 located within the shaft cylinder 215. Of course, one of the two bearings 232 can be located inside the shaft sleeve 215, and the other can be located outside the shaft sleeve 215, as long as a stable fit between the rotating shaft 231 and the shaft sleeve 215 can be ensured. The stator assembly 22 is located on the radial outer side of the rotating shaft 231 and the shaft sleeve 215, and the magnetic ring 233 is located on the radial outer side of the stator assembly 22; the fan 3 is located on the side of the outer ring portion 211 near the air inlet cavity 13, and the fan 3 is fixed on the rotating shaft 231.

[0042] In one embodiment, as shown in Figure Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the rotor assembly 23 also includes a housing 234, which is fitted around the magnetic ring 233 and tightly fitted with the rotating shaft 231. The fan 3 is fixed to the rotating shaft 231, and is coaxially arranged with the motor 2. The stator assembly 22 generates a magnetic field, causing the magnetic ring 233 and the housing 234 to rotate. The housing 234 drives the rotating shaft 231 and the fan 3 to rotate simultaneously. This eliminates the need for additional transmission devices for the motor 2 and the fan 3, effectively improving the transmission efficiency of the neck fan.

[0043] In one embodiment, such as Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the fan 3 includes a hub 31 and a plurality of blades 32 spaced around the outside of the hub 31. The diameter of the maximum cross-section of the hub 31, the diameter of the housing 234, and the diameter of the inner ring 212 differ by 0.5 mm from any two of these three diameters. The airflow generated by the plurality of blades 32 can smoothly pass through the area between the housing 234 and the outer ring 211, and the area between the inner ring 212 and the outer ring 211, and is blown towards the air duct 15. The hub 31, the housing 234, and the inner ring 212 are axially aligned, and their diameters are similar, resulting in a compact structure for the motor 2 and the fan 3.

[0044] In one embodiment, such as Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the inner ring portion 212 forms a receiving portion 216 on the side of the substrate 214 facing the air duct 15. The drive plate 24 is disposed in the receiving portion 216, and the control member 42 is electrically connected to the drive plate 24. The receiving portion 216 is directly formed by the inner ring portion 212, that is, the drive plate 24 is directly snapped into the inner ring portion 212 and is disposed facing the air duct 15, which facilitates the connection of the drive plate 24 with other electrical components. The substrate 214 also has a notch, through which wires are electrically connected to the stator assembly 22 and the drive plate 24.

[0045] In one embodiment, such as Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, each of the two free ends of the housing 1 is provided with a receiving cavity 16. The neck fan also includes a control assembly, which includes a power supply component 41 that provides power to the braking assembly, and a control component 42 that controls the braking assembly. The power supply component 41 is electrically connected to the control component 42, and the control component 42 is electrically connected to the drive plate 24. The power supply component 41 and the control component 42 are housed in the receiving cavity 16. The control component 42 includes a switch 43 and an interface 44 exposed outside the free end of the housing 1.

[0046] It should be understood that in this embodiment, the air inlet cavity 13, the fixing cavity 14, the air duct 15, and the receiving cavity 16 are sequentially arranged along the length direction of the housing 1. Of course, in other embodiments, the air inlet cavity 13, the fixing cavity 14, and the air duct 15 may also be sequentially arranged along the length direction of the housing 1, and the receiving cavity 16 may be disposed on one side of the air inlet cavity 13 or on one side of the air duct 15.

[0047] In one embodiment, such as Figures 1 to 4 As shown, the portable fan is a neck-hanging fan. The housing 1 is symmetrically provided with two air inlet chambers 13, two fixing chambers 14, and two air ducts 15. Two braking components are respectively disposed in the two fixing chambers 14. When worn with the air outlet 12 facing upwards, the air generated by the braking components blows towards the user's head, and the air intake 1d can accelerate the airflow near the neck, thus having a sweat-absorbing effect. Alternatively, when worn with the air outlet 12 facing downwards, the air in the braking components blows towards the user's neck, and the air intake 1d can accelerate the airflow near the head, thus having a sweat-absorbing effect. In other embodiments, the portable fan can also be a handheld fan, a clip-on fan, a versatile fan, etc., and is not limited to this example.

[0048] The above detailed description is only an illustration of the preferred embodiment of this application and is not intended to limit the patent scope of this application. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A portable fan, characterized in that, include: The housing has an air inlet cavity, a fixed cavity and an air duct arranged sequentially along its length. The housing also has an air inlet and an air outlet, with the air inlet connected to the air inlet cavity and the air outlet connected to the air duct. A braking assembly is housed in the fixed cavity. The braking assembly draws air in from the air inlet, passes through the air inlet cavity, the braking assembly, and the air duct, and then blows it out from the air outlet. The air outlet is arranged along the length of the air duct, and an air intake is provided on one side of the air outlet. Air from outside the portable fan is drawn in by the airflow blown out of the air outlet and passed through the air intake.

2. The portable fan as described in claim 1, characterized in that: The housing includes a first wall and a second wall, a first side of the first wall is closedly connected to a first side of the second wall, a second side of the first wall is opposite to and spaced apart from a second side of the second wall, and the outer surface of the first wall and the inner surface of the second wall define the air outlet.

3. The portable fan as described in claim 2, characterized in that: The housing also includes a third wall, which is located on the outer side of the second wall. The third wall is sheet-like and is spaced apart from the second side of the second wall to form the air intake.

4. The portable fan as described in claim 3, characterized in that: The distance between the third wall and the second side of the second wall is 2.7-3.1 mm, and the distance between the third wall and the second side of the first wall is 6.6-12.6 mm.

5. The portable fan as described in claim 3, characterized in that: The first side of the first wall and the second side of the first wall extend in the same direction, and the second side of the first wall extends beyond the first side of the first wall. The first side of the second wall and the second side of the second wall extend in the same direction, and the second side of the second wall extends beyond the first side of the second wall. The depth of the air outlet is 15-23mm.

6. The portable fan as described in claim 5, characterized in that: The outer surface of the second side of the first wall is formed with a Coanda surface, and the air outlet is arranged to guide airflow onto the Coanda surface.

7. The portable fan as described in claim 5, characterized in that: One side of the third wall extends in the same direction as the second side of the second wall, and the third wall extends beyond the second side of the second wall. The other side of the third wall extends in the same direction as the second side of the first wall, and the third wall does not extend beyond the second side of the first wall. The air intake and the air outlet extend parallel to each other, and the air intake and the air outlet are arranged side by side along the length direction.

8. The portable fan as described in claim 1, characterized in that: It also includes a control component, which includes a power supply unit for providing power to the braking component and a control unit for controlling the braking component. The braking component includes a drive plate. The power supply unit is electrically connected to the control unit, and the control unit is electrically connected to the drive plate. The housing is provided with the air inlet cavity, the fixed cavity, the air duct, and the receiving cavity in sequence along its length. The control component is housed in the receiving cavity, and the control unit includes a switch and an interface exposed outside the housing.

9. The portable fan as described in claim 1, characterized in that: The length of the air duct is 4-6 times the length of the air inlet cavity. The maximum cross-sectional area of ​​the air duct is less than the minimum cross-sectional area of ​​the air inlet cavity. The maximum cross-sectional area of ​​the fixed cavity is less than or equal to the minimum cross-sectional area of ​​the air inlet cavity. The minimum cross-sectional area of ​​the fixed cavity is greater than or equal to the maximum cross-sectional area of ​​the air duct. The diameter of the portion of the housing in the fixed cavity is 28-35 mm, and the length of the housing in the fixed cavity is 30-40 mm.

10. The portable fan as described in any one of claims 1-9, characterized in that: The portable fan is a neck fan. The housing is symmetrically provided with two air inlet chambers, two fixed chambers, and two air ducts. Two braking components are respectively provided in the two fixed chambers. When worn with the air outlet facing upward, the air generated by the braking components blows towards the user's head. Alternatively, when worn with the air outlet facing downward, the air generated by the braking components blows towards the user's neck.

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