Nursing appliance

Abstract

The utility model discloses a nursing instrument, nursing instrument includes: hand component, hand component includes handle main part and handle shell, forms the airflow channel in handle main part, handle shell cover is established in handle main part outside, handle shell is provided with the hole of avoidance, handle main part is provided with screen cover, and the hole of avoidance avoids screen cover, and at least one side of screen cover length direction is provided with the clamping hook, and the inner wall of handle shell is connected with the clamping hook. Therefore, through setting the clamping hook on screen cover and the inner wall of handle shell connection, this can strengthen the connection reliability of screen cover and handle shell, can prevent screen cover from falling out when nursing instrument falls, and the clamping hook on screen cover is towards handle shell cover and is established in handle main part outside, namely, the clamping hook is set in the outside of handle main part, so as to prevent the clamping hook from interfering with the airflow channel, and can guarantee the airflow flow efficiency.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a nursing device. Background Technology

[0002] Hair dryers are an important household appliance used for personal care and beauty in daily life. With the advancement of technology and the increasing demand from people, new hair dryers are not only used to dry hair, but also to switch between hot and cold air, adjust wind speed and temperature, and generate negative ions. As the functions of hair dryers increase, the number of buttons on them also increases. For ease of design and production, multiple buttons are designed on a single cover.

[0003] In the prior art, the button cover is prone to falling off the appliance when it is dropped, and the hair dryer is small in size and has a compact structure, which requires balancing the connection positions between the structures and the airflow efficiency in the air duct. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a care device that can prevent the screen cover from falling off and can ensure airflow efficiency.

[0005] The nursing device according to an embodiment of the present utility model includes: a handle component, the handle component including a handle body and a handle shell, an airflow channel forming inside the handle body, the handle shell covering the outside of the handle body, an avoidance hole provided in the handle shell, a screen cover plate provided on the handle body, the avoidance hole avoiding the screen cover plate, a hook provided on at least one side of the screen cover plate in the length direction, the hook engaging with the inner wall of the handle shell; a blower component, the blower component being disposed at the air outlet end of the handle component and communicating with the airflow channel; and a bending connection mechanism for causing the blower component to rotate circumferentially relative to the handle component around the handle axis and to bend in a plane.

[0006] Therefore, by setting a hook on the screen cover and engaging with the inner wall of the handle housing, the connection reliability between the screen cover and the handle housing can be enhanced, preventing the screen cover from falling out when the nursing device is dropped. Furthermore, the hook on the screen cover faces the handle housing that covers the outside of the handle body, meaning the hook is located on the outside of the handle body. This prevents the hook from interfering with the airflow channel and ensures efficient airflow.

[0007] According to some embodiments of the present invention, the screen cover is provided with a plurality of hooks on at least one side along its length direction, and the plurality of hooks are spaced apart along the width direction of the screen cover.

[0008] According to some embodiments of the present invention, the inner surface of the screen cover is provided with reinforcing ribs extending along its length direction, the reinforcing ribs being located in the adjacent area of ​​the hook to enhance the structural strength of the snap-fit ​​area.

[0009] According to some embodiments of the present invention, the bending connection mechanism includes a rotary sealing joint and a hinge, so as to achieve circumferential rotation and bending while maintaining the airflow channel seal.

[0010] According to some embodiments of this utility model, the hinge is a spherical universal joint or a flexible corrugated pipe.

[0011] According to some embodiments of the present invention, the annular mating surface of the air outlet end of the handle is provided with a first limiting protrusion, and the annular mating surface of the air duct component opposite to it is provided with a second limiting protrusion. When the air duct component rotates around the axis of the handle component to a predetermined angle, the first limiting protrusion and the second limiting protrusion abut against each other to limit the circumferential rotation angle of the air duct component relative to the handle component.

[0012] According to some embodiments of this utility model, the rotation angle of the duct component relative to the handle component is set to α, and α satisfies the relationship: α≤250°.

[0013] According to some embodiments of the present invention, a sealing ring is provided on the outer circumferential side of the air outlet end of the handle component, and the air duct component is sleeved on the outer side of the sealing ring and elastically seals with the sealing ring.

[0014] According to some embodiments of the present invention, there are multiple sealing rings, which are spaced apart axially.

[0015] According to some embodiments of this utility model, a negative ion needle is provided inside the air duct component, and the negative ion needle is located upstream of the air outlet; the air outlet of the air duct component is spaced apart on the outside of the negative ion needle in the air outlet direction, and the circumferential distance from the negative ion needle to the opening plane of the air outlet along the air outlet direction is set as L, and L satisfies the relationship: L≥3mm.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a nursing device according to an embodiment of the present utility model; Figure 2This is a partial schematic diagram of a nursing device according to an embodiment of the present utility model; Figure 3 This is an exploded view of the handle housing and screen cover according to an embodiment of the present utility model; Figure 4 This is a partial schematic diagram of a nursing device according to an embodiment of the present utility model; Figure 5 for Figure 4 A schematic diagram of region A in the middle; Figure 6 This is a partial schematic diagram of a nursing device according to an embodiment of the present utility model; Figure 7 This is a partial schematic diagram of a nursing device according to an embodiment of the present utility model.

[0018] Figure label: 100. Nursing equipment; 10. Handle component; 11. Handle body; 112. Screen cover; 1121. Hook; 1122. Reinforcing rib; 12. Handle shell; 121. Clearance hole; 122. Slot; 13. First limit protrusion; 14. Air outlet; 15. Sealing ring; 20. Ventilation duct component; 21. Second limiting protrusion; 22. Ventilation net; 30. Bending connection mechanism; 31. Rotary sealing joint; 32. Hinge component. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0020] The following is for reference. Figures 1-7 Description of nursing device 100 according to an embodiment of the present utility model.

[0021] Combination Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the nursing device 100 according to an embodiment of the present invention mainly includes: a handle 10 and a blower 20. The handle 10 includes a handle body 11 and a handle housing 12. An airflow channel is formed within the handle body 11, providing a passage for airflow within the handle 10 and ensuring smooth airflow from the nursing device 100. The handle housing 12 covers the outside of the handle body 11, protecting the handle body 11 and the airflow channel inside. The handle body 11 is provided with a screen cover 112, which can be used to house the function buttons and display screen of the nursing device 100.

[0022] Furthermore, the handle housing 12 has a clearance hole 121, which allows the screen cover 112 on the handle body 11 to be exposed, so that the function buttons and display screen on the screen cover 112 can be exposed, facilitating user operation of the buttons and observation of the display screen. At least one side of the screen cover 112 along its length is provided with a hook 1121, which engages with the inner wall of the handle housing 12. This secure connection between the screen cover 112 and the handle housing 12 increases the reliability of the connection and prevents the screen cover 112 from falling out during use of the nursing device 100, thus improving the structural reliability of the nursing device 100.

[0023] Furthermore, the hook 1121 is located on the screen cover 112 and is engaged with the handle housing 12. That is, the hook 1121 is located on the side of the screen cover 112 facing the handle housing 12. This allows the hook 1121 to be positioned away from the handle body 11, preventing the hook 1121 from extending into the handle body 11. This also prevents the hook 1121 from interfering with the airflow in the airflow channel, ensuring that the radial cross-section of the airflow channel remains unchanged. This avoids affecting the airflow efficiency or generating abnormal noise, thereby ensuring the airflow efficiency in the airflow channel. This ensures that the nursing device 100 provides the user with strong and uniform airflow to meet the user's needs for different styles.

[0024] Furthermore, the air duct component 20 is disposed at the air outlet end of the handle component 10 and is connected to the airflow channel. Specifically, after the air duct component 20 is connected to the handle component 10, the air in the airflow channel can flow into the air duct component 20, thereby allowing the airflow to flow out from the air duct component 20 to realize the air outlet function of the nursing device 100.

[0025] Furthermore, the bending connection mechanism 30 is used to make the air duct component 20 rotate circumferentially relative to the handle component 10 around the handle axis and bend in a plane. This configuration allows the air duct component 20 to rotate axially relative to the handle component 10 to a certain angle, thereby changing the direction of the air blown out of the nursing device 100. In this way, the user can change the air outlet direction of the nursing device 100 without changing the angle at which the user holds the nursing device 100. This not only ensures the user's comfort when holding the nursing device 100, but also increases the air outlet range of the nursing device 100.

[0026] In an embodiment of this utility model, there is a certain angle between the end face of the handle housing 12 adjacent to the air duct component 20 and the radial section of the handle component 10, and the housing of the air duct component 20 is in contact with the end face of the handle component 10 adjacent to the air duct component 20. Thus, when the air duct component 20 rotates circumferentially relative to the axis of the handle component 10, there is an angle between the axis of the air duct component 20 and the axis of the handle component 10, so that the air duct component 20 can be bent relative to the handle component 10 in a plane.

[0027] Furthermore, the blower component 20 in this embodiment can be replaced with other accessories, and after the other accessories are connected to the handle component 10, the other accessories can also rotate circumferentially relative to the handle component 10 or be bent in a plane relative to the handle component 10. With the help of other accessories, fine hair styling can be created, such as curly hair, straight hair, wavy hair, etc.

[0028] In addition, when the air duct component 20 is rotated circumferentially relative to the handle component 10 or is bent relative to the handle component 10, the air duct component 20 and the airflow channel are always kept in contact. This ensures that there is no fluid loss when the air duct component 20 is bent relative to the handle component 10, so as to ensure the working effect of the nursing device 100.

[0029] Combination Figure 3 As shown, the screen cover 112 has a plurality of hooks 1121 on at least one side along its length direction. The plurality of hooks 1121 are spaced apart along the width direction of the screen cover 112. This arrangement not only increases the number of hooks 1121 on the screen cover 112 to increase the connection points between the screen cover 112 and the handle housing 12, which helps to increase the connection strength between the screen cover 112 and the handle housing 12, but also prevents the plurality of hooks 1121 from being too close together on the screen cover 112, which would cause stress concentration and breakage between the positions of the plurality of hooks 1121. This helps to improve the structural strength of the screen cover 112, thereby improving the structural reliability of the nursing device 100.

[0030] In embodiments of this invention, multiple hooks 1121 are evenly and symmetrically arranged on the screen cover 112. The hooks 1121 are made of materials including, but not limited to, high-strength materials such as polyoxymethylene or reinforced nylon, and the manufacturing methods of the hooks 1121 include, but are not limited to, injection molding. The hooks 1121 form an interference fit with the pre-reserved slots on the handle housing 12 to improve the connection strength between the hooks 1121 and the slots, and the interference is between 0.1mm and 0.2mm to ensure that the hooks 1121 can withstand a large impact force without disengaging when the nursing device 100 is dropped.

[0031] Combination Figure 3As shown, the inner surface of the screen cover 112 is provided with a reinforcing rib 1122 extending along its length. The reinforcing rib 1122 is located in the adjacent area of ​​the hook 1121. This arrangement allows the reinforcing rib 1122 to provide stronger support for the hook 1121 along its length on the screen cover 112, thereby enhancing the structural strength of the engagement area between the hook 1121 and the inner wall of the handle housing 12. This not only improves the tightness of the connection between the hook 1121 on the side of the screen cover 112 along its length and the inner wall of the handle housing 12, thus improving the structural reliability of the screen cover 112 within the handle housing 12, but also prevents stress concentration and breakage at the hook 1121.

[0032] In embodiments of this utility model, the risk of screen cover 112 falling off during drop tests (such as 26 drops from a height of 1.5m at multiple angles) can be reduced to over 90%.

[0033] Combination Figure 7 As shown, the bending connection mechanism 30 includes a rotary sealing joint 31 and a hinge 32 to achieve circumferential rotation and bending while maintaining the airflow channel seal. Specifically, the rotary sealing joint 31 is connected to the hinge 32. The hinge 32 can rotate circumferentially relative to the axis of the rotary sealing joint 31, and the hinge 32 can be bent relative to the rotary sealing joint 31. This arrangement allows the air duct component 20 to rotate circumferentially relative to the axis of the handle component 10 and bend in a plane. On the other hand, the rotary sealing joint 31 can ensure the airtightness of the airflow channel, prevent airflow leakage, and thus ensure the maximum airflow of the nursing device 100.

[0034] According to some embodiments of this utility model, the hinge 32 is a spherical universal joint. Specifically, the spherical universal joint has a large rotation angle. By connecting the spherical universal joint to the sealing adapter, the hinge 32 can have a large rotation angle relative to the axis of the sealing adapter. This not only enables the duct component 20 to rotate circumferentially relative to the axis of the handle component 10, but also enables bending in a plane.

[0035] According to some other embodiments of the present invention, the hinge 32 is a flexible bellows. Specifically, the flexible bellows has multiple annular or spiral pleats and has axial, radial and angular compensation capabilities. By connecting the flexible bellows to the sealing adapter, the flexible bellows can be bent in any direction relative to the sealing adapter. This not only allows the duct component 20 to rotate circumferentially relative to the axis of the handle component 10, but also allows bending within a plane.

[0036] Combination Figure 4 and Figure 5As shown, the annular mating surface of the air outlet end of the handle 10 is provided with a first limiting protrusion 13, and the annular mating surface of the air duct 20 opposite to it is provided with a second limiting protrusion 21. When the air duct 20 rotates around the axis of the handle 10 to a predetermined angle, the first limiting protrusion 13 and the second limiting protrusion 21 abut against each other to limit the circumferential rotation angle of the air duct 20 relative to the handle 10. Specifically, after the air duct 20 rotates circumferentially relative to the handle 10 by a certain angle, the first limiting protrusion 13 on the handle 10 and the second limiting protrusion 21 on the air duct 20 engage to prevent the air duct 20 from continuing to rotate in the same direction. In this way, during the installation and production process of the nursing device 100, it can prevent production line workers from rotating the air duct 20 at a large angle, and can prevent dead bends in the wiring of the nursing device 100, thereby improving the product yield of the nursing device 100.

[0037] The predetermined angle at which the air duct component 20 rotates circumferentially around the axis of the handle component 10 until the first limiting protrusion 13 and the second limiting protrusion 21 abut against each other can be set according to the production design requirements of the nursing device 100.

[0038] It should be noted that when the first limiting protrusion 13 and the second limiting protrusion 21 are not in limiting contact, the air duct component 20 can rotate circumferentially relative to the handle component 10.

[0039] Combination Figure 4 and Figure 5 As shown, the rotation angle of the duct component 20 relative to the handle component 10 is α, and α satisfies the relationship: α≤250°. Specifically, the initial position of the duct component 20 is defined as the position when the axis of the duct component 20 and the axis of the handle component 10 are parallel to each other. The maximum rotation angle position of the duct component 20 is defined as the position when the duct component 20 is rotated so that the first limiting protrusion 13 and the second limiting protrusion 21 are in limiting engagement. In the embodiment of this utility model, α is the rotation angle between the initial position and the maximum rotation angle position of the duct component 20.

[0040] Furthermore, to prevent excessive rotation angle of the air duct component 20 relative to the handle component 10, which could lead to dead ends in the wiring within the nursing device 100, α needs to be set to not exceed a first preset value. In embodiments of this utility model, the first preset value includes, but is not limited to, 245°, 250°, and 255°.

[0041] Combination Figure 6As shown, a sealing ring 15 is fitted around the outer circumference of the air outlet 14 of the handle 10, and the air duct 20 is fitted around the outer side of the sealing ring 15 and elastically seals with the sealing ring 15. This arrangement can enhance the sealing between the air duct 20 and the handle 10, so that as much airflow as possible can flow into the air duct 20 in the airflow channel and then out from the air outlet 14 of the air duct 20. This can reduce the leakage of airflow between the air duct 20 and the handle 10, which is conducive to ensuring the airflow effect of the nursing device.

[0042] Furthermore, the outer side of the sealing ring 15 is elastically fitted with the air duct component 20, so that when the air duct component 20 is connected to the handle component 10, the inner wall of the air duct component 20 can at least partially compress the sealing ring 15 to enhance the sealing effect, thereby reducing the air leakage between the airflow channel and the air duct component 20, so as to reduce the air volume loss of the nursing appliance 100.

[0043] In embodiments of this utility model, the sealing ring 15 includes, but is not limited to, O-rings, and the material of the sealing ring 15 includes, but is not limited to, nitrile rubber. The Shore A hardness of nitrile rubber is between 60 and 70, which can balance the sealing and flexibility of the sealing ring 15. In addition, the wear resistance of nitrile rubber is better than that of silicone, making it suitable for high-friction rotating parts. This allows it to be used between the air duct part 20 and the handle part 10 to ensure the normal operation of the rotation function of the nursing device 100. Furthermore, the temperature resistance range of nitrile rubber is between -30℃ and 100℃, meeting the daily high-temperature use scenarios of the nursing device 100.

[0044] Furthermore, compared to silicone, nitrile rubber has better oil resistance, is less prone to the precipitation of low-molecular-weight siloxanes, and will not peel or fail to seal due to stickiness after long-term use. After aging tests (no cracks after 5000 rotations), the service life of the nitrile rubber-supported sealing ring 15 can be increased by 3 times compared to the silicone-made sealing ring 15.

[0045] According to an embodiment of the present invention, there are multiple sealing rings 15, which are spaced apart in the axial direction. This arrangement can enhance the sealing between the handle 10 and the air duct 20, improve the sealing effect, and further reduce the air volume loss of the nursing device 100.

[0046] In embodiments of this invention, the spacing between the multiple sealing rings 15 is not less than 3mm, so that the sealing effect is still maintained when a single ring fails.

[0047] In the embodiments of this utility model, the nursing device 100 undergoes an airtightness test, that is, when 5 kPa air pressure is applied in the airflow channel, the leakage at the sealing ring 15 does not exceed 0.5 L / min, which meets the industry standard for air leakage (1 L / min). The air leakage rate of the nursing device 100 in the embodiments of this utility model can be reduced to below 1%.

[0048] In the embodiments of this utility model, the durability of the nursing device 100 is enhanced, the O-ring has a lifespan of at least 50,000 rotations, while the silicone ring peels after about 15,000 rotations. This provides a better feel for the user, and the rotational torque can be controlled between 0.2 and 0.5 N·m.

[0049] According to an embodiment of the present invention, a negative ion needle is provided inside the air duct component 20. The negative ion needle is located on the upstream side of the air outlet. The air outlets of the air duct component 20 are spaced apart on the outer side of the negative ion needle in the air outlet direction. The circumferential distance from the negative ion needle to the opening plane of the air outlet along the air outlet direction is set as L, and L satisfies the relationship: L≥3mm.

[0050] Specifically, a negative ion needle is provided inside the air duct component 20, and the negative ion needle is located on the upstream side of the air outlet. This allows the air in the air duct component 20 to flow through the negative ion needle and carry away the negative ions generated on the negative ion needle, so that the air blown out by the nursing device 100 carries negative ions, thereby increasing the negative ion function of the nursing device 100.

[0051] Furthermore, an air mesh 22 is provided at the air outlet of the air duct component 20. The air mesh 22 can not only allow the airflow inside the air duct component 20 to ensure the normal airflow of the nursing device 100, but also prevent hands from being put into the air outlet. This can protect the user from being burned by the excessively hot airflow, and also protect the negative ion needle, thereby improving the reliability of the nursing device 100.

[0052] Furthermore, to ensure safety and reliability of the negative ion needle, the circumferential distance from the negative ion needle to the air outlet opening plane along the air outlet direction needs to be set to not exceed a second preset value. In embodiments of this utility model, the second preset value includes, but is not limited to, 2.5mm, 3.0mm, and 3.5mm.

[0053] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "circumferential", "radial", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A nursing appliance, characterized in that, include: A handle assembly, comprising a handle body and a handle housing, wherein an airflow channel is formed within the handle body, the handle housing covers the outside of the handle body, the handle housing has an clearance hole, the handle body is provided with a screen cover, the clearance hole avoids the screen cover, and at least one side of the screen cover in the length direction is provided with a hook, the hook engaging with the inner wall of the handle housing; A ductwork assembly, wherein the ductwork assembly is disposed at the air outlet end of the handle assembly and communicates with the airflow channel; A bending connection mechanism is used to enable the air duct component to rotate circumferentially relative to the handle component around the handle axis and to bend in a plane.

2. The nursing appliance according to claim 1, characterized in that, The screen cover has a plurality of hooks on at least one side along its length direction, and the plurality of hooks are spaced apart along the width direction of the screen cover.

3. The nursing appliance according to claim 2, characterized in that, The inner surface of the screen cover is provided with reinforcing ribs extending along its length, and the reinforcing ribs are located in the adjacent area of ​​the hook to enhance the structural strength of the snap-fit ​​area.

4. The nursing appliance according to claim 1, characterized in that, The bending connection mechanism includes a rotary sealing joint and a hinge to achieve circumferential rotation and bending while maintaining the airflow channel seal.

5. The nursing appliance according to claim 4, characterized in that, The hinge is a spherical universal joint or a flexible bellows.

6. The nursing appliance according to claim 1, characterized in that, The annular mating surface of the air outlet end of the handle is provided with a first limiting protrusion, and the annular mating surface of the air duct is provided with a second limiting protrusion. When the air duct rotates around the axis of the handle to a predetermined angle, the first limiting protrusion and the second limiting protrusion abut against each other to limit the circumferential rotation angle of the air duct relative to the handle.

7. The nursing appliance according to claim 6, characterized in that, Let the rotation angle of the duct component relative to the handle component be α, where α satisfies the relationship: α≤250°.

8. The nursing appliance according to claim 1, characterized in that, A sealing ring is fitted around the air outlet end of the handle, and the air duct is fitted around the outside of the sealing ring and elastically seals with it.

9. The nursing appliance according to claim 8, characterized in that, There are multiple sealing rings, which are spaced apart axially.

10. The nursing appliance according to claim 1, characterized in that, The air duct component is equipped with a negative ion needle, which is located upstream of the air outlet. The air outlets of the air duct component are spaced apart on the outside of the negative ion needle in the air outlet direction. The circumferential distance from the negative ion needle to the opening plane of the air outlet along the air outlet direction is set as L, and L satisfies the relationship: L≥3mm.

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