A hair styling device

Abstract

The utility model is suitable for hairdressing tool technical field provides a kind of hairdressing equipment.The hairdressing equipment includes hairdressing head and handle, hairdressing head is used to the hair styling treatment, handle is used to support hairdressing head.Handle has inner shell, shell and connecting piece, shell is sleeved in the outer shell, shell has the first end and the second end in axial direction, and inner shell has the third end and the fourth end in axial direction.The first end of shell is connected with hairdressing head or inner shell, the second end of shell is connected with the fourth end of inner shell by connecting piece, and the third end of inner shell is rotationally fixed to hairdressing head.Setting like this, handle is in the structure of inner and outer nesting, and structure is simple, and connection reliability is good, and the number of assembly gap on the outer contour of hairdressing equipment is less, and the overall coordination of appearance is good, and the overall aesthetic property is improved.

Description

Technical Field

[0001] This utility model belongs to the field of hair styling tools technology, and in particular relates to a hair styling device. Background Technology

[0002] Hair styling equipment is a tool used to style hair. It can wrap and heat hair to achieve curls, or straighten and heat hair to achieve straightness. Related technologies for hair styling equipment include a styling head and a handle. The handle is for the user to hold, and the styling head is mounted on the handle. The assembly process between the handle and the styling head is relatively complex, and the assembly gaps are visible on the outer contour of the hair styling equipment. This not only affects the aesthetics and overall appearance of the equipment but also hinders the ease of cleaning, resulting in a poor user experience. Utility Model Content

[0003] In view of this, the present invention provides a hair styling device to solve the technical problems of how to reduce assembly gaps on the outer contour of the hair styling device and how to reduce assembly complexity.

[0004] To solve the above problems, the technical solution provided by this utility model embodiment is as follows:

[0005] This utility model provides a hair styling device, including: a hair styling head for styling hair; a handle for supporting the hair styling head; the handle has an inner shell, an outer shell, and a connector, the outer shell being sleeved outside the inner shell, the outer shell having a first end and a second end opposite to each other in the axial direction, and the inner shell having a third end and a fourth end opposite to each other in the axial direction; wherein, the third end is rotatably fixed to the hair styling head, and the first end is connected to the hair styling head or the inner shell, and the second end is connected to the fourth end through the connector.

[0006] In some embodiments, the third end is axially connected to the hair styling head and circumferentially snapped onto the hair styling head, while the first end is connected to the hair styling head to restrict the rotation of the hair styling head relative to the inner shell.

[0007] In some embodiments, the outer shell is cylindrical, with at least one of the first end and the second end being configured as an open end, and the outer shell is axially fitted over the inner shell via the open end.

[0008] In some embodiments, the first end is inserted into the hair styling head; and / or, the connector is disposed within the housing.

[0009] In some embodiments, one of the hair styling head and the inner shell is provided with an insertion interface and a limiting groove. The insertion interface extends axially, and the limiting groove communicates with the insertion interface and extends circumferentially. The other of the hair styling head and the inner shell is provided with a protrusion. The protrusion is inserted axially into the insertion interface and rotates circumferentially into the limiting groove.

[0010] In some embodiments, one of the hair styling head and the inner shell is further provided with an elastic portion that can deform radially, the elastic portion being located within the limiting groove; wherein, when the connector connects the inner shell and the outer shell, the elastic portion protrudes radially, and the protrusion is circumferentially limited between the elastic portion and the sidewall forming the limiting groove.

[0011] In some embodiments, multiple insertion interfaces are provided, and each insertion interface is spaced apart in the circumferential direction. Each insertion interface has a limiting groove on at least one side in the circumferential direction, and the number of protrusions is the same as the number of insertion interfaces.

[0012] In some embodiments, the insertion interface and the limiting groove are provided on the inner side of the hair styling head, and the protrusion is provided on the outer side of the third end. When the connector connects the inner shell and the outer shell, the protrusion abuts against the end wall forming the limiting groove along the axial direction.

[0013] In some embodiments, the hair styling head includes: a body for mounting a heating element; an annular portion for connecting the outer shell, the annular portion being axially connected to one end of the body and forming an annular cavity for accommodating the inner shell portion; and a fastening portion located within the annular cavity and protruding radially from the inner side of the annular portion; wherein multiple fastening portions are provided circumferentially and spaced apart from each other, and an insertion interface is formed between two adjacent fastening portions, and each fastening portion is provided with a limiting groove.

[0014] In some embodiments, the connector is configured as a threaded fastener that secures the inner shell and the outer shell along the axial direction.

[0015] In some embodiments, one of the housing and the hair styling head is provided with a positioning groove, and the other of the housing and the hair styling head is provided with a positioning plug, which is inserted axially into the positioning groove.

[0016] In some embodiments, one of the inner shell and the outer shell is provided with an axially extending groove, and the other of the inner shell and the outer shell is provided with a slider that is axially inserted into the groove.

[0017] In some embodiments, multiple sliders are provided, and each slider is spaced apart along the axial direction.

[0018] In some embodiments, the outer shell is provided with a first connecting portion adjacent to the second end, and the first connecting portion is disposed on the inner side of the outer shell; the inner shell is provided with a second connecting portion corresponding to the first connecting portion, the second connecting portion is disposed on the outer side of the inner shell and adjacent to the fourth end, and the connector connects the first connecting portion and the second connecting portion.

[0019] In some embodiments, multiple grooves are provided circumferentially, and each grooves contains one of the first connecting portions.

[0020] This utility model provides a hair styling device, which includes a hair styling head and a handle. The hair styling head is used to style hair, and the handle is used to support the hair styling head. The handle has an inner shell, an outer shell, and a connector. The outer shell is fitted over the inner shell and has a first end and a second end that are axially opposite each other. The inner shell has a third end and a fourth end that are axially opposite each other. The first end is connected to the hair styling head or the inner shell, and the second end is connected to the fourth end of the inner shell through the connector. The inner shell is rotatably fixed to the hair styling head. This arrangement results in a nested structure for the handle, with the connection between the handle and the hair styling head located on the inner shell. The outer shell covers the inner shell, thus concealing some of the assembly gaps on the inner shell, ensuring that at least some of the assembly gaps on the inner shell are not exposed on the outer contour of the hair styling device. The connector links the second and fourth ends, but is located away from the point where the handle connects to the hair styling head. No mounting positions for the connector are provided at the first and third ends, eliminating the need for a connector at the connection point between the hair styling head and the handle. This reduces the number and layers of assembly gaps at the connection point, improving assembly convenience. The hair styling device features a simple assembly method, fewer assembly gaps on its outer contour, good overall aesthetics, and ease of cleaning. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the hair styling equipment provided in the embodiment of this utility model;

[0022] Figure 2 An exploded view of the handle provided in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the handle provided in an embodiment of the present utility model, in which a portion is shown in cross-section.

[0024] Figure 4 An exploded view of the hair styling equipment provided in this embodiment of the utility model;

[0025] Figure 5 For hair styling equipment Figure 1 A cross-sectional view along the AA direction;

[0026] Figure 6 for Figure 5 A schematic diagram of its breakdown.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Hair styling head; 11. Heating element; 12. Body; 13. Annular part; 131. Annular cavity; 14. Fastening part; 141. Limiting groove; 1411. Side wall forming the limiting groove; 1412. End wall forming the limiting groove; 142. Insertion interface; 143. Positioning groove; 2. Handle; 21. Inner shell; 211. Third end; 212. Fourth end; 2121. Second connecting part; 213. Protrusion; 214. Slider; 22. Outer shell; 221. First end; 222. Second end; 2221. First connecting part; 223. Positioning insert; 224. Slide groove; 23. Back cover. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0031] In the following description, the terms "first," "second," "etc." are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the directions under normal use, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use.

[0032] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0033] like Figure 1 As shown, this embodiment of the present invention provides a hair styling device that can be used to style hair, such as straightening or curling it. The hair styling device includes a hair styling head 1 and a handle 2. The handle 2 supports the hair styling head 1 and is held by the consumer. The hair styling head 1 is used to style the hair; for example, it can straighten and / or curl the hair. It is understood that the hair styling head 1 includes a heating element 11 to heat the hair to achieve straightening and / or curling. Specifically, the hair styling head 1 can function solely as a curling iron to curl hair, or solely as a straightener to straighten hair. In some possible implementations, the hair styling head 1 can also function as both a curling iron and a straightener. For example, the hair styling head 1 can be equipped with a curling iron composed of two openable plates, each containing a heating element 11. The opposite sides of the two plates are planar, and the opposing sides are curved. With the two plates open, the user can place their hair into the gap between the plates, then close the plates again to clamp the hair, heat the hair, and pull it in a roughly straight direction to straighten it. With the two plates closed, the user can wrap their hair around the outer curved surfaces of the plates and heat it to curl it.

[0034] like Figure 2 and Figure 3 As shown, the handle 2 has an inner shell 21, an outer shell 22, and a connector (not shown). The outer shell 22 is fitted over the inner shell 21. Specifically, the outline of the outer shell 22 surrounds the inner shell 21 circumferentially and radially. The outer shell 22 is closer to the external environment than the inner shell 21. The outer outline of the outer shell 22 at least forms part of the outer outline of the handle 2, so it can be directly observed with the naked eye from the outside of the hair styling device. The structure and shape of the outer shell 22 define the shape and size of the inner shell 21. That is, the outer shell 22 is hollow inside, forming a cavity. The maximum diameter of the inner shell 21 does not exceed the inner diameter of the cavity formed by the outer shell 22. The inner shell 21 passes through the cavity of the outer shell 22. It can be simply understood that the outer shell 22 covers the inner shell 21 circumferentially.

[0035] The explanation is that the axial direction represents the length direction of the outer shell 22 and the inner shell 21, and is also the direction in which the maximum dimensions of the outer shell 22 and the inner shell 21 lie in the three-dimensional coordinate system. This axial direction... Figure 2 and Figure 3 The direction shown is N1. Radial indicates the diameter direction within the cross-section perpendicular to the axis; circumferential indicates the direction around the axis, which can be referenced... Figure 2 and Figure 3The N2 direction is shown. It should be noted that this embodiment of the invention does not limit the radial cross-sectional shape of the outer shell 22 and the inner shell 21. The cross-sectional shape can be square, circular, elliptical, etc., and the direction of the diameter can represent the straight line direction passing through the midpoint within any cross-section perpendicular to the axial direction. Since the outer shell 22 is fitted over the inner shell 21, it can be understood that the axial direction of both the outer shell 22 and the inner shell 21 is along the axial direction of the handle 2, the radial direction of both the outer shell 22 and the inner shell 21 is along the radial direction of the handle 2, and the circumferential direction of both the outer shell 22 and the inner shell 21 is along the circumferential direction of the handle 2.

[0036] In related technologies, the handle has a mounting cavity for mounting electronic components. To facilitate the assembly of electronic components, the handle is often designed with an axially split structure, meaning the handle consists of at least two parts, each with an axially extending opening. The two parts are engaged or disengaged to open or close the mounting cavity. Therefore, an axially extending assembly gap inevitably exists on the handle. This assembly gap is relatively long and can still be visually observed on the outside of the hair styling device even after the hair styling head and handle are connected, making it prone to water and dust ingress, affecting the reliability of the circuit connection, and also hindering cleaning.

[0037] In this embodiment of the utility model, the handle 2 is composed of an inner shell 21 and an outer shell 22 nested together. The inner shell 21 can be configured as a split structure to accommodate and install electronic components. The outer shell 22 covers the inner shell 21 in the circumferential direction, and can at least cover part of the assembly gaps on the inner shell 21, so that at least part of the assembly gaps on the inner shell 21 are not exposed on the outer contour of the hair styling device. This reduces the assembly gaps on the outer contour of the hair styling device, reduces the possibility of water and dust entering the handle 2, and helps to keep the circuit inside the handle 2 more reliably connected. At the same time, dust is less likely to accumulate on the outer contour of the hair styling device, and it is also easier to clean.

[0038] like Figure 2 and Figure 3 As shown, the outer shell 22 has a first end 221 and a second end 222 that are axially opposite each other, and the inner shell 21 has a third end 211 and a fourth end 212 that are axially opposite each other. It should be noted that the ends can be located at the axial contour edges of the outer shell 22 and the inner shell 21, or at positions close to the axial contour edges. For example, the first end 221 represents the axial contour edge position of the outer shell 22, and the second end 222 represents the position close to the axial contour edge of the outer shell 22 opposite to the first end 221; similarly, the third end 211 represents the axial contour edge position of the inner shell 21, and the fourth end 212 represents the position close to the axial contour edge of the inner shell 21 opposite to the third end 211.

[0039] For example, 2- Figure 4As shown, the first end 221 is connected to the hair styling head 1 or the inner shell 21, the second end 222 is connected to the fourth end 212 via a connector, and the third end 211 is rotatably fixed to the hair styling head 1. Specifically, the first end 221 indicates the position where the outer shell 22 is connected to the hair styling head 1 or the inner shell 21, the second end 222 indicates the position where the outer shell 22 is connected to the inner shell 21; similarly, the third end 211 indicates the position where the inner shell 21 is connected to the hair styling head 1, and the fourth end 212 indicates the position where the inner shell 21 is connected to the outer shell 22. The first end 221 of the outer shell 22 can be connected to the hair styling head 1 or the inner shell 21. However, no matter which one the first end 221 is connected to, the inner shell 21 and the hair styling head 1 are locked in the circumferential direction after the third end 211 is rotated and fixed to the hair styling head 1, and cannot rotate relative to the hair styling head 1. The second end 222 and the fourth end 212 are fixed by a connector. The outer shell 22 and the inner shell 21 are both fixedly connected, so that the outer shell 22 cannot rotate relative to the hair styling head 1.

[0040] With this configuration, the connector connects the second end 222 and the fourth end 212, away from the connection point between the handle 2 and the hair styling head 1. The first end 221 and the third end 211 do not require pre-reserved locations for the connector installation, reducing the number and layers of assembly gaps between the handle 2 and the hair styling head 1. This simplifies assembly and reduces the possibility of water and dust entering the connection point, ensuring reliable electrical connection between the handle 2 and the hair styling head 1 and facilitating cleaning. Furthermore, since the connection point between the handle 2 and the hair styling head 1 is located on the third end 211 of the inner shell 21, and not on the outer shell 22, regardless of whether the first end 221 is connected to the hair styling head 1 or the inner shell 21, the outer shell 22, after being fixed to the inner shell 21 via the connector, can be securely attached to the hair styling head 1, resulting in a relatively simple structure for the outer shell 22. The inner shell 21 and the outer shell 22 are firmly fixed to the hair styling head 1 as a single unit, while maintaining a relatively simple structure. In other words, the handle 2 provided in this embodiment of the utility model is reliably fixed to the hair styling head 1 with a relatively simple structure. The design is ingenious and easy to implement.

[0041] It should be noted that the connector can be a threaded fastener such as a screw, bolt, or screw, or a fastener without threads such as a pin or wedge, or a snap-fit ​​component such as a snap-fit ​​or elastic self-locking component. This utility model embodiment does not limit the specific structure of the connector, as long as the connector can connect the second end 222 and the fourth end 212, thereby connecting the inner shell 21 and the outer shell 22.

[0042] Specifically, the hair styling head 1 and the handle 2 can be fixedly connected or detachably connected. Whether the hair styling head 1 and the handle 2 are detachable depends on the electrical connection between them. For example, if the hair styling head 1 and the handle 2 are connected by a cable, then even if the third end 211 is detached from the hair styling head 1, the cable remains connected between the hair styling head 1 and the handle 2, maintaining the connection. In this embodiment, the hair styling head 1 and the handle 2 can be considered fixedly connected. In some possible embodiments, a detachable electrical connection can be provided between the hair styling head 1 and the handle 2. For example, a pogo pin can be provided between the hair styling head 1 and the handle 2, with a male connector for the pogo pin in one of the hair styling head 1 and the handle 2, and a female connector for the pogo pin in the other. After the hair styling head 1 and the handle 2 are assembled, they are electrically connected via the pogo pin; after the hair styling head 1 is separated from the handle 2, there is a gap between the hair styling head 1 and the handle 2, and they do not contact each other through other components, allowing the hair styling head 1 and the handle 2 to separate. In this embodiment, the handle 2 and the hair styling head 1 can be considered as detachably connected.

[0043] In the embodiment where the hair styling head 1 and the handle 2 are detachably connected, the handle 2 and the hair styling head 1 can be conveniently stored separately after separation. When a handle 2 is equipped with multiple hair styling heads 1, different hair styling heads 1 can be installed on the handle 2 to achieve different functions. For example, a handle 2 can be equipped with a curling head and a straightening head. By installing different types of hair styling heads 1 on the handle 2, curling and straightening can be achieved respectively. Of course, a handle 2 can also be equipped with multiple curling heads, but each curling head has a different diameter. By connecting curling heads of different diameters to the handle 2, hair curls of different diameters can be created to meet the diverse needs of users.

[0044] This utility model provides a hair styling device, which includes a hair styling head 1 and a handle 2. The hair styling head 1 is used for styling hair, for example, straightening and / or curling hair. The handle 2 is used to support the hair styling head 1 and is held by the consumer. The handle 2 has an inner shell 21, an outer shell 22, and a connector. The outer shell 22 is fitted over the inner shell 21 and has a first end 221 and a second end 222 that are axially opposite each other. The inner shell 21 has a third end 211 and a fourth end 212 that are axially opposite each other. The first end 221 of the outer shell is connected to the hair styling head 1 or the inner shell 21. The second end 222 of the outer shell is connected to the fourth end 212 of the inner shell through the connector. The third end 211 of the inner shell is rotatably fixed to the hair styling head 1. The handle 2 is designed with an inner and outer nested structure, and the connection between the handle 2 and the hair styling head 1 is located at the third end 211 of the inner shell 21. The outer shell 22 covers the inner shell 21, thus concealing some of the assembly gaps on the inner shell 21, ensuring that at least some of these gaps are not visible on the outer contour of the hair styling device. The connector connects the second end 222 and the fourth end 212, located away from the connection point between the handle 2 and the hair styling head 1. Since the first end 221 and the third end 211 do not have pre-reserved locations for the connector, there is no need to install a connector at the connection point between the hair styling head 1 and the handle 2, reducing the number and layers of assembly gaps between the handle 2 and the hair styling head 1. The hair styling device provided by this embodiment has fewer assembly gaps and fewer layers on its outer contour, resulting in a better appearance and shape coordination. It also offers better waterproof and dustproof performance, facilitates reliable circuit connections, and is easy to clean.

[0045] In some embodiments, such as 2- Figure 4 As shown, the third end 211 is axially connected to the hair styling head 1 and circumferentially rotates and engages with the hair styling head 1. The first end 221 of the outer shell is connected to the hair styling head 1 to restrict the rotation of the hair styling head 1 relative to the inner shell 21. The fact that the third end 211 can be axially connected to the hair styling head 1 indicates that the hair styling head 1 has a position (e.g., the insertion interface 142) for the inner shell 21 to move axially. The inner shell 21 can move closer to or further away from the hair styling head 1 through this position (e.g., the insertion interface 142). However, after the third end 211 rotates circumferentially, a relative positional change occurs between the inner shell 21 and the hair styling head 1 in the circumferential direction, that is, the inner shell 21 and the hair styling head 1 are misaligned in the circumferential direction, causing the third end 211 to avoid the aforementioned position (e.g., the insertion interface 142) and engage with the hair styling head 1. After the first end 221 is connected to the hair styling head 1, a connection is established between the first end 221 and the hair styling head 1, restricting the rotation of the hair styling head 1. The third end 211 cannot rotate circumferentially to reset, and cannot detach from the hair styling head 1 along its original position (such as the insertion interface 142), so that the inner shell 21 is fixed on the hair styling head 1, thereby realizing the assembly operation of the hair styling head 1 and the handle 2.

[0046] Thus, both the outer shell 22 and the inner shell 21 are connected to the hair styling head 1, and the outer shell 22 and the inner shell 21 are fixedly connected by a connector. The outer shell 22 and the inner shell 21 together restrict the rotation of the hair styling head 1 and limit each other, resulting in good reliability after the handle 2 and the hair styling head 1 are assembled. In addition, since the inner shell 21 is snapped into the hair styling head 1, it has a relatively simple connection structure, which eliminates the need for the user to turn it many times, making it convenient for the user to assemble the hair styling head 1 and the handle 2.

[0047] In some embodiments, such as Figure 2 and Figure 3 As shown, the outer shell 22 is cylindrical, and its peripheral wall extends axially from one end to the other, giving it a relatively complete cylindrical wall. At least one of the first end 221 and the second end 222 is configured as an open end, and the outer shell 22 is axially fitted over the inner shell 21 through the open end. The first end 221 can be an open end, the second end 222 can be an open end, or both the first end 221 and the second end 222 can be open ends. The outer shell 22 has an opening only at at least one end for the inner shell 21 to pass through, without affecting the contour integrity of the outer shell 22's peripheral wall. The outer shell 22 and the inner shell 21 are fitted together at the end wall, reducing assembly gaps on the circumferential contour of the outer shell 22, thereby reducing assembly gaps on the outer contour of the hair styling device.

[0048] In some embodiments, such as Figure 4 and Figure 5 As shown, the first end 221 is inserted into the hair styling head 1. The first end 221 is partially covered by the contour of the hair styling head 1 and is not exposed on the outer contour of the hair styling device. The first end 221 is the connection end between the outer shell 22 and the hair styling head 1. The first end 221 is hidden inside the hair styling head 1, thus concealing the assembly gap between the outer shell 22 and the hair styling head 1. Furthermore, since the outer shell 22 is fitted outside the inner shell 21, the assembly gap between the third end 211 and the hair styling head 1 is also covered by the contour of the hair styling head 1, meaning the assembly gap between the inner shell 21 and the hair styling head 1 is also concealed. The assembly gaps between the handle 2 and the hair styling head 1 are also concealed, reducing the assembly gaps on the outer contour of the hair styling device.

[0049] In some embodiments, such as Figure 3 and Figure 4As shown, the connector is disposed within the outer casing 22. That is, the outline dimension of the connector does not exceed the outline dimension of the outer casing 22. Specifically, the outline of the connector will not extend beyond the outline range of the outer casing 22 axially or radially. In the radial direction, the maximum diameter of the connector is smaller than the inner diameter of the outer casing 22. The connector can be disposed between the outer casing 22 and the inner casing 21, or it can be disposed within the inner casing 21. In any case, the connector is located within the outer casing 22. Therefore, the assembly gaps connecting the connector to the second end 222 and the fourth end 212 are also hidden within the outer casing 22 and will not be exposed on the outer outline of the hair styling device. This further reduces the assembly gaps on the outer outline of the hair styling device and improves its aesthetic appearance and overall shape coordination.

[0050] For ease of explanation, "the outer casing 22 is cylindrical" is defined as the first embodiment, "the first end 221 is inserted into the hair styling head 1" is defined as the second embodiment, and "the connector is disposed within the outer casing 22" is defined as the third embodiment. It is understood that the first, second, and third embodiments can be used simultaneously, or one of the first, second, and third embodiments can be selected for implementation; when using the first embodiment, one can also choose between the second and third embodiments.

[0051] In some embodiments, such as Figures 4-6 As shown, one of the hair styling head 1 and the inner shell 21 has an insertion interface 142 and a limiting groove 141, while the other of the hair styling head 1 and the inner shell 21 has a protrusion 213. The insertion interface 142 and the limiting groove 141 can be provided on the hair styling head 1, and the protrusion 213 can be provided on the inner shell 21; alternatively, the protrusion 213 can be provided on the hair styling head 1, and the insertion interface 142 and the limiting groove 141 can be provided on the inner shell 21. For ease of explanation, the example of the hair styling head 1 having an insertion interface 142 and a limiting groove 141, and the inner shell 21 having a protrusion 213 will be used. The insertion interface 142 extends axially and penetrates the axial portion of the end wall of the hair styling head 1. The limiting groove 141 communicates with the insertion interface 142 and extends circumferentially, meaning the limiting groove 141 is located circumferentially and is at least arc-shaped. The protrusion 213 is axially inserted into the insertion interface 142 and circumferentially rotated and engaged in the limiting groove 141. The protrusion 213 moves axially within the insertion interface 142. After rotation, the protrusion 213 rotates into the limiting groove 141 after passing the position where the insertion interface 142 connects to the limiting groove 141. A relative positional change occurs between the protrusion 213 and the insertion interface 142, resulting in circumferential misalignment until the protrusion 213 is engaged in the limiting groove 141. At this point, the protrusion 213 cannot detach from the hair styling head 1 along the insertion interface 142, thus fixing the inner shell 21 to the hair styling head 1. The outer shell 22 is then fixed to the inner shell 21 via a connector, thereby fixing it to the hair styling head 1 through the inner shell 21. This completes the assembly operation of the handle 2.

[0052] In related technologies, the handle is fixed to the hair styling head via a threaded connection. The handle and hair styling head are only connected by a self-locking thread, making it easy for them to rotate relative to each other circumferentially, potentially leading to detachment. However, in this embodiment, after the first end 221 of the outer shell is connected to the hair styling head 1, the first end 221 and the hair styling head 1 are locked circumferentially, thus restricting the degree of freedom of movement of the inner shell 21 in the circumferential direction. The connection structure between the outer shell 22 and the hair styling head 1 reduces the possibility of the inner shell 21 moving circumferentially, thereby reducing the possibility of the inner shell 21 rotating circumferentially to the insertion interface 142 and detaching from the hair styling head 1.

[0053] In some embodiments, such as Figure 5 and Figure 6 As shown, one of the hair styling head 1 and the inner shell 21 is also provided with an elastic part (not shown in the figure), which can deform radially. Specifically, after the elastic part is pressed, it undergoes radial compression deformation; after the pressure on the elastic part is released, it recovers its radial deformation. The elastic part is located in the limiting groove 141. When the connecting member connects the inner shell 21 and the outer shell 22, the elastic part protrudes radially, and the protrusion 213 is circumferentially limited between the elastic part and the side wall 1411 forming the limiting groove. That is, when the protrusion 213 rotates circumferentially in the limiting groove 141, it will pass through the position where the elastic part is located. When the protrusion 213 passes through the position where the elastic part is located, the elastic part is compressed by the pressure of the protrusion 213. After the protrusion 213 passes through the position where the elastic part is located and continues to rotate, the external force on the elastic part disappears, and the elastic part recovers its radial deformation, so that the protrusion 213 is circumferentially limited between the elastic part and the side wall 1411 forming the limiting groove. The inner shell 21 is constrained by the elastic part and will not rotate back to its original position in the circumferential direction. In this way, by restricting the degree of freedom of movement of the inner shell 21 in the circumferential direction, the reliability of the connection between the inner shell 21 and the hair styling head 1 is improved. Even when the outer shell 22 is not installed, the inner shell 21 will not rotate back to its original position in the circumferential direction, reducing the possibility that the inner shell 21 will detach from the hair styling head 1 when the outer shell 22 is not installed.

[0054] In some embodiments, such as Figure 4As shown, multiple connectors 142 are provided, spaced apart circumferentially. The number of protrusions 213 is the same as the number of connectors 142. For example, if there are four connectors 142, there are also four protrusions 213, and each protrusion 213 can be inserted into one connector 142. Each connector 142 has a limiting groove 141 on at least one side circumferentially. Specifically, a limiting groove 141 can be provided on one side of the connector 142, so that after the protrusion 213 is inserted into the connector 142, it can rotate unidirectionally towards the side where the connector 142 is located; alternatively, a limiting groove 141 can be provided on each side of the connector 142, so that after the protrusion 213 is inserted into the connector 142, it can rotate towards either side. It can be understood that multiple limiting grooves 141 are also provided, and the number of limiting grooves 141 is at least equal to the number of protrusions 213. A protrusion 213 is engaged in a limiting groove 141. The third end 211 of the inner shell and the hair styling head 1 have multiple connection positions in the circumferential direction, which reduces the suspended area of ​​the third end 211 and makes the inner shell 21 more reliably connected to the hair styling head 1.

[0055] In some embodiments, such as Figure 3 and Figure 4 As shown, the hair styling head 1 has an insertion interface 142 and a limiting groove 141 on its inner side, and a protrusion 213 is provided on the outer side of the third end 211. It can be understood that the third end 211 protrudes axially from the first end 221, allowing the protrusion 213 to be provided on the outer side of the third end 211, and allowing the protrusion 213 to be inserted into and engaged within the limiting groove 141. When the connector connects the inner shell 21 and the outer shell 22, the protrusion 213 axially abuts against the end wall 1412 forming the limiting groove (see reference). Figure 5 Specifically, the positive pressure between the protrusion 213 and the end wall forming the limiting groove 141 increases, thereby increasing the sliding friction between the protrusion 213 and the end wall forming the limiting groove 141, reducing the possibility of the protrusion 213 moving in the circumferential direction, making the protrusion 213 more reliably engaged in the limiting groove 141, and improving the stability of the connection between the handle 2 and the hair styling head 1.

[0056] In some embodiments, such as Figure 4As shown, the hair styling head 1 includes a body 12, an annular portion 13, and a fastening portion 14. The body 12 is used to mount the heating element 11. The annular portion 13 is used to connect to the outer shell 22. The annular portion 13 is axially connected to one end of the body 12 and forms an annular cavity 131 for accommodating a portion of the inner shell 21. That is, the annular portion 13 is disposed between the body 12 and the outer shell 22, and the cross-section of the annular portion 13 in the axial direction is annular. The annular portion 13 surrounds the annular cavity 131, which can at least accommodate the third end 211 of the inner shell and the first end 221 of the outer shell. The fastening portion 14 is located inside the annular cavity 131 and protrudes radially from the inner side of the annular portion 13. It can be understood that "inner side of the annular portion 13" refers to the side of the annular portion 13 that surrounds the annular cavity 131. Multiple fastening portions 14 are provided circumferentially and spaced apart from each other. An insertion interface 142 is formed between two adjacent fastening portions 14, and each fastening portion 14 has a limiting groove 141. The side wall of the fastening portion 14 in the circumferential direction is the side wall 1411 forming the limiting groove, and the end wall of the fastening portion 14 in the axial direction is the end wall 1412 forming the limiting groove. The protrusion 213 is inserted between two adjacent fastening portions 14 and rotates circumferentially into the limiting groove 141. The connector connects the second end 222 and the fourth end 212 (see reference). Figure 3 After that, the protrusion 213 abuts against the axial end wall of the fastening part 14 and engages in the limiting groove 141, thus fixing the inner shell 21 to the hair styling head 1. This design is simple in structure and easy to implement, requiring no multiple turns of twisting, saving more effort, and can reliably maintain the connection stability between the handle 2 and the hair styling head 1.

[0057] In some embodiments, such as Figures 2-4 As shown, the connector is a threaded fastener that axially fixes the inner shell 21 and the outer shell 22. Due to the adjustability of the threaded connection, the connector axially tightens the inner shell 21 and the outer shell 22, causing the protrusion 213 within the limiting groove 141 to axially abut against the end wall 1412 forming the limiting groove, increasing the friction between the protrusion 213 and the end wall 1412. Due to the self-locking property of the threaded connection, the inner shell 21 and the outer shell 22 are reliably connected, reducing the possibility of them loosening and thus reducing the possibility of the handle 2 separating from the hair styling head 1, facilitating a more secure fixation between the handle 2 and the hair styling head 1.

[0058] In some embodiments, such as Figures 4-6As shown, one of the outer shell 22 and the hair styling head 1 has a positioning groove 143, and the other of the outer shell 22 and the hair styling head 1 has a positioning block 223. Alternatively, the outer shell 22 may have the positioning groove 143 and the hair styling head 1 may have the positioning block 223; or the outer shell 22 may have the positioning block 223 and the hair styling head 1 may have the positioning groove 143. For ease of explanation, we will use the example of the hair styling head 1 having the positioning groove 143 and the outer shell 22 having the positioning block 223. It can be understood that the positioning groove 143 is axially formed on the fastening part 14, and the positioning block 223 protrudes from the first end 221 of the outer shell. The positioning block 223 is axially inserted into the positioning groove 143, so that the first end 221 is locked circumferentially with the annular part 13. The outer shell 22 is also fixed to the inner shell 21 by a connector, thus restricting the degree of freedom of movement of the inner shell 21 in the circumferential direction. In addition, by inserting the positioning block 223 into the positioning groove 143, the position of the outer shell 22 in the circumferential direction is restricted. There is no need to calibrate the relative position of the outer shell 22 and the inner shell 21. The connector can be installed directly, which simplifies the assembly operation of the inner shell 21 and the outer shell 22 and makes it convenient to implement.

[0059] In some possible implementations, such as Figure 4 As shown, multiple positioning blocks 223 are provided, with each positioning block 223 spaced apart in the circumferential direction, and the number of positioning blocks 223 is the same as the number of positioning slots 143. The outer shell 22 is connected to the fastening part 14 at multiple positions, which increases the connection area between the outer shell 22 and the fastening part 14, improves the reliability of the connection between the outer shell 22 and the hair styling head 1, and maintains a relatively accurate position, which can reliably restrict the degree of freedom of the inner shell 21 in the circumferential direction.

[0060] In some embodiments, such as Figure 2 and Figure 3 As shown, one of the inner shell 21 and the outer shell 22 has an axially extending groove 224, and the other of the inner shell 21 and the outer shell 22 is provided with a slider 214. It can be understood that the slider 214 and the groove 224 are located between the outer shell 22 and the inner shell 21. Alternatively, the inner shell 21 may have the groove 224 and the outer shell 22 may have the slider 214; or the inner shell 21 may have the slider 214 and the outer shell 22 may have the groove 224. Regardless of which embodiment is used, after the outer shell 22 is fitted over the inner shell 21, the slider 214 is axially inserted into the groove 224, locking the outer shell 22 and the inner shell 21 in the circumferential direction, thus restricting the degree of freedom of relative rotation between the outer shell 22 and the inner shell 21 in the circumferential direction. When the inner shell 21 and the outer shell 22 are mounted on the hair styling head 1 (see reference 1),... Figure 1After assembly, the outer shell 22 and the inner shell 21 are restricted in their circumferential degrees of freedom by the sliding groove 224 and the slider 214, so that the outer shell 22 can reliably restrict the inner shell 21's circumferential rotation relative to the hair styling head 1. That is, the outer shell 22 will not rotate relative to the inner shell 21 in the circumferential direction, and the overall structure has good stability.

[0061] In some embodiments, such as Figure 2 and Figure 3 As shown, multiple sliders 214 are provided, and each slider 214 is spaced apart along the axial direction. Each slider 214 together forms a support arm extending in the axial direction, and restricts the degree of freedom of rotation of the outer shell 22 and the inner shell 21 in the circumferential direction at multiple positions in the axial direction, so as to facilitate the stability of the relative position of the outer shell 22 and the inner shell 21.

[0062] In some embodiments, such as Figure 2 and Figure 3 As shown, a first connecting portion 2221 is provided at the second end 222 of the outer shell, and a second connecting portion 2121 corresponding to the first connecting portion 2221 is provided at the fourth end 212 of the inner shell. The connector connects the first connecting portion 2221 and the second connecting portion 2121. The first connecting portion 2221 and the second connecting portion 2121 form the mounting position of the connector. The first connecting portion 2221 is located inside the outer shell 22, and the second connecting portion 2121 is located outside the inner shell 21, so that the connector is located between the outer shell 22 and the inner shell 21. The connector is not displayed on the outer peripheral wall of the outer shell 22, thereby hiding the assembly gap between the connector and the first connecting portion 2221 and the second connecting portion 2121 inside the outer shell 22, reducing the assembly gap on the outer contour of the outer shell 22, and thus reducing the assembly gap on the outer contour of the hair styling equipment.

[0063] In some embodiments, such as Figure 2 and Figure 3 As shown, multiple circumferential grooves 224 are provided, and each groove 224 contains a first connecting part 2221. It can be understood that multiple first connecting parts 2221 are also provided; correspondingly, multiple second connecting parts 2121 and connecting members are also provided. One first connecting part 2221 is connected to one second connecting part 2121 via a connecting member. The grooves 224 extend axially, therefore the connecting members axially connect the first connecting parts 2221 and the second connecting parts 2121. After the slider 214 is inserted into the groove 224, the first connecting parts 2221 and the second connecting parts 2121 are aligned, eliminating the need for additional calibration of their positions, thus facilitating the installation of the connecting members. This design makes full use of the space within the grooves 224, resulting in a compact structure and simplified assembly of the connecting members, making implementation convenient.

[0064] In some embodiments, such as Figure 2As shown, the handle 2 also includes a rear cover 23, which is snapped between the outer shell 22 and the inner shell 21, and the rear cover 23 connects the outer shell 22 and the inner shell 21 away from the hair styling head 1 (see reference). Figure 1 One end of the inner shell 21. The rear cover 23 can cover the first connecting part 2221 and the second connecting part 2121 in the axial direction, thereby hiding the assembly gap between the inner shell 21 and the outer shell 22 connected by the connector. The outer peripheral wall of the outer shell 22 in the circumferential direction and the outer end wall of the outer shell 22 in the axial direction will not show the assembly gap between the inner shell 21 and the outer shell 22 connected by the connector, further reducing the assembly gap on the outer contour of the hair styling equipment and improving the appearance and shape coordination of the hair styling equipment.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hair styling device, characterized in that, include: A hair styling head is used to style and shape hair. Handle, supporting the hair styling head; The handle has an inner shell, an outer shell, and a connector. The outer shell is fitted over the inner shell and has a first end and a second end that are axially opposite each other. The inner shell has a third end and a fourth end that are axially opposite each other. The third end is rotatably fixed to the hair styling head, the first end is connected to the hair styling head or the inner shell, and the second end is connected to the fourth end through the connector.

2. The hair styling device according to claim 1, characterized in that, The third end is axially connected to the hair styling head and circumferentially rotatably engaged with the hair styling head, while the first end is connected to the hair styling head to restrict the rotation of the hair styling head relative to the inner shell.

3. The hair styling device according to claim 1, characterized in that, The outer shell is cylindrical, and at least one of the first end and the second end is provided as an open end. The outer shell is axially fitted over the inner shell via the open end.

4. The hair styling device according to claim 2 or 3, characterized in that, The first end is inserted into the hair styling head; And / or, the connector is disposed within the housing.

5. The hair styling device according to claim 2, characterized in that, One of the hair styling head and the inner shell has an insertion interface and a limiting groove. The insertion interface extends axially, and the limiting groove communicates with the insertion interface and extends circumferentially. The other of the hair styling head and the inner shell has a protrusion. The protrusion is inserted axially into the insertion interface and rotates circumferentially into the limiting groove.

6. The hair styling device according to claim 5, characterized in that, One of the hair styling head and the inner shell is further provided with an elastic part that can deform in the radial direction, and the elastic part is located in the limiting groove; In the state where the connector connects the inner shell and the outer shell, the elastic part protrudes radially, and the protrusion is circumferentially limited between the elastic part and the side wall forming the limiting groove.

7. The hair styling device according to claim 5, characterized in that, The connector is provided in multiple ways, and the connectors are spaced apart in the circumferential direction. Each connector is provided with a limiting groove on at least one side in the circumferential direction. The number of protrusions is the same as the number of connectors.

8. The hair styling device according to claim 5, characterized in that, The hair styling head has an insertion interface and a limiting groove on its inner side, and a protrusion is provided on the outer side of the third end. When the connector connects the inner shell and the outer shell, the protrusion abuts against the end wall of the limiting groove along the axial direction.

9. The hair styling device according to claim 8, characterized in that, The hair styling head includes: The main body is used to mount the heating element; An annular portion, the annular portion being used to connect the outer shell, the annular portion being axially connected to one end of the body, and forming an annular cavity for accommodating the inner shell portion; The fastening part is located inside the annular cavity and protrudes radially from the inner side of the annular part; The fastening parts are arranged in multiple circumferential directions and spaced apart from each other. The insertion interface is formed between two adjacent fastening parts, and each fastening part is provided with a limiting groove.

10. The hair styling device according to claim 1, characterized in that, The connector is configured as a threaded fastener, which secures the inner shell and the outer shell along the axial direction.

11. The hair styling device according to claim 1, characterized in that, One of the outer shell and the hair styling head is provided with a positioning groove, and the other of the outer shell and the hair styling head is provided with a positioning plug, which is inserted into the positioning groove along the axial direction.

12. The hair styling device according to claim 11, characterized in that, One of the inner shell and the outer shell is provided with an axially extending groove, and the other of the inner shell and the outer shell is provided with a slider, which is inserted into the groove axially.

13. The hair styling device according to claim 12, characterized in that, The slider is provided in multiple ways, and each slider is spaced apart along the axial direction.

14. The hair styling device according to claim 12, characterized in that, The outer shell is provided with a first connecting part, which is adjacent to the second end and is located on the inner side of the outer shell; the inner shell is provided with a second connecting part corresponding to the first connecting part, which is located on the outer side of the inner shell and is adjacent to the fourth end; the connector connects the first connecting part and the second connecting part.

15. The hair styling device according to claim 14, characterized in that, The slide groove is provided in multiple circumferential directions, and each slide groove is provided with one of the first connecting parts.

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