An inner housing assembly, handle and hair appliance

Abstract

The utility model is suitable for hairdressing equipment technical field provides a kind of inner shell subassembly, handle and hairdressing machine. The above-mentioned inner shell subassembly includes upper cover, lower cover and circuit board, and the upper cover is detachably connected with the lower cover, and the upper cover and the lower cover are combined to form mounting cavity. The circuit board is arranged in the mounting cavity and is located between the upper cover and the lower cover, and the circuit board is detachably connected with the upper cover and the lower cover. At least one of the upper cover and the lower cover is provided with a support for mounting the circuit board, and the circuit board is at least abutted on the support. In this way, during the disassembly and assembly of the upper cover and the lower cover, the disassembly and assembly operation of the circuit board can be simultaneously realized, the difficulty of disassembly and assembly of the circuit board is reduced, and implementation is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of hair styling equipment technology, and in particular relates to an inner shell component, a handle and a hair styling tool. Background Technology

[0002] A hair styling tool is a tool used to style hair. It can wrap and heat hair to achieve curls, or straighten and heat hair to achieve straightness. In related technologies, hair styling tools include a handle containing a circuit board with an integrated control module for controlling the tool's operation. However, the circuit board in these technologies is secured with multiple fasteners, such as screws and bolts. This makes assembly difficult, hindering the production efficiency of the hair styling tool and making disassembly inconvenient, thus affecting the efficiency of rework and maintenance. Utility Model Content

[0003] In view of this, the present invention provides an inner shell assembly, a handle, and a hair styling tool to solve the technical problem of how to reduce the difficulty of disassembling and assembling the circuit board.

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

[0005] In a first aspect, this utility model provides an inner shell assembly, the inner shell assembly comprising: an upper cover; a lower cover detachably connected to the upper cover, at least one of the upper cover and the lower cover having a receiving space to form a mounting cavity when combined between the upper cover and the lower cover; and a circuit board disposed within the mounting cavity and located between the upper cover and the lower cover, the circuit board being detachably connected to both the upper cover and the lower cover; wherein at least one of the upper cover and the lower cover is provided with a support member for mounting the circuit board, and the circuit board at least abuts against the support member.

[0006] In some embodiments, the support abuts against the contour edge of the circuit board.

[0007] In some embodiments, the circuit board has a first end face and a second end face opposite each other in the thickness direction; the upper cover and the lower cover are respectively provided with the support members, and each support member abuts against the corresponding first end face and the second end face.

[0008] In some embodiments, the upper cover and the lower cover are respectively provided with a plurality of the support members, and each of the support members is located on both sides of the circuit board in the width direction.

[0009] In some embodiments, the supports located on the same side of the upper cover are spaced apart along the length of the circuit board; and / or, the supports located on the same side of the lower cover are spaced apart along the length of the circuit board.

[0010] In some embodiments, on the same side of the width direction of the circuit board, each of the supports on the upper cover and each of the supports on the lower cover are arranged opposite to each other in pairs; wherein the distance between two opposing supports is less than or equal to the thickness of the circuit board.

[0011] In some embodiments, the support member is a support rib, and one end of the support rib that abuts against the circuit board is configured as a plane or a stepped surface.

[0012] In some embodiments, at least one of the upper cover and the lower cover is further provided with a positioning member, and at least one end of the circuit board in the length direction abuts against the positioning member.

[0013] In some embodiments, at least one of the upper cover and the lower cover is further provided with a locking member, and a slot is formed on the circuit board, with at least a portion of the locking member inserted into the slot.

[0014] In some embodiments, the upper cover or the lower cover is provided with a locking post, and the circuit board is connected to the locking post by fasteners.

[0015] Secondly, this utility model embodiment provides a handle for supporting a hair styling head. The handle includes the inner shell assembly described in the first aspect. The handle also includes an outer shell forming a receiving cavity and having an opening at one end communicating with the receiving cavity. The open end of the outer shell is used to connect with the hair styling head, and the inner shell assembly is detachably installed in the receiving cavity and connected to the hair styling head.

[0016] Thirdly, this utility model provides a hair styling tool, which includes the handle described in the second aspect. The hair styling tool also includes a hair styling head for curling and / or straightening hair. The hair styling head is detachably connected to the handle and is located at one end of the housing where the opening is located.

[0017] This utility model provides an inner shell assembly, which includes an upper cover, a lower cover, and a circuit board. The upper and lower covers are detachably connected, forming a mounting cavity when assembled. The circuit board is disposed within the mounting cavity, between the upper and lower covers, and is detachably connected to both. At least one of the upper and lower covers has a support for mounting the circuit board, with the circuit board at least abutting against the support. This configuration allows the circuit board to be fixed by placing it on the support and then assembling the upper and lower covers. Since the circuit board is detachably connected to both the upper and lower covers, disassembling the upper and / or lower covers exposes the circuit board, enabling its removal. Therefore, by arranging the circuit board for assembly and disassembly simultaneously during the assembly and disassembly of the upper and lower covers, the difficulty of assembling and disassembling the circuit board is reduced. This ingenious design facilitates easy implementation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the hair styling device provided in an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A partial sectional view of the handle in the AA direction;

[0020] Figure 3 An exploded view of the handle provided in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the top cover provided in an embodiment of the present utility model;

[0022] Figure 5 A schematic diagram of a first structure for connecting the lower cover to the circuit board, provided in an embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of a second structure for connecting the lower cover to the circuit board, provided as an embodiment of the utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Handle; 1. Inner shell assembly; 11. Mounting cavity; 12. Top cover; 13. Bottom cover; 131. Positioning component; 132. Locking component; 133. Locking pin; 14. Circuit board; 141. First end face; 142. Second end face; 143. Slot; 15. Support component; 151. First support component; 152. Second support component; 153. Stepped surface; 2. Outer shell; 21. Receiving cavity; 22. Opening; 20. Hair styling head. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Firstly, such as Figure 1 and Figure 2 As shown, this embodiment of the invention provides an inner shell assembly 1 for installation within the outer shell 2 of a hair styling tool. The hair styling tool is a tool for styling hair, capable of straightening and / or curling. It is understood that "outer shell 2 of the hair styling tool" refers to a shell whose outline is visible to the naked eye on the outside of the hair styling tool; the outer shell 2 at least forms part of the outer outline of the hair styling tool. The inner shell assembly 1 is installed within the outer shell 2 and is not visible on the outer outline of the hair styling tool.

[0031] like Figure 2 and Figure 3As shown, the inner shell assembly 1 includes an upper cover 12, a lower cover 13, and a circuit board 14. The lower cover 13 is detachably connected to the upper cover 12. At least one of the upper cover 12 and the lower cover 13 has a receiving space to form a mounting cavity 11 when combined between the upper cover 12 and the lower cover 13. Specifically, the upper cover 12 may form a cavity opening towards the lower cover 13, and the lower cover 13 may be a plate-like surface that closes the cavity. After the upper cover 12 and the lower cover 13 are combined, the side wall of the lower cover 13 facing the upper cover 12, together with the wall of the upper cover 12 forming the cavity, forms the mounting cavity 11. Alternatively, the lower cover 13 may form a cavity opening towards the upper cover 12, and the upper cover 12 may be a plate-like surface that closes the cavity. After the upper cover 12 and the lower cover 13 are combined, the side wall of the upper cover 12 facing the lower cover 13, together with the wall of the lower cover 13 forming the cavity, forms the mounting cavity 11. In some possible embodiments, refer to... Figure 3 The upper cover 12 forms a cavity that opens toward the lower cover 13, and the lower cover 13 forms another cavity that opens toward the upper cover 12. The cavities in the upper cover 12 and the lower cover 13 both represent the aforementioned "accommodation space", and together they form the mounting cavity 11 after the upper cover 12 and the lower cover 13 are combined.

[0032] like Figure 2 and Figure 3 As shown, the circuit board 14 is disposed within the mounting cavity 11 and located between the upper cover 12 and the lower cover 13. The circuit board 14 is detachably connected to both the upper cover 12 and the lower cover 13. The assembly of the circuit board 14 can be completed during the assembly of the upper cover 12 and the lower cover 13, reducing the assembly difficulty of the circuit board 14 and improving its assembly efficiency, thereby increasing the production efficiency of the hair styling device. Furthermore, since the circuit board 14 is detachably connected to both the upper cover 12 and the lower cover 13, disassembling the upper cover 12 and the lower cover 13 exposes the circuit board 14, enabling its disassembly. This also reduces the difficulty of disassembling the circuit board 14, facilitating rework and maintenance.

[0033] like Figure 2 and Figure 3 As shown, at least one of the upper cover 12 and the lower cover 13 is provided with a support member 15 for mounting the circuit board 14, and the circuit board 14 at least abuts against the support member 15. Specifically, the support member 15 may be provided only in the upper cover 12, only in the lower cover 13, or both the upper cover 12 and the lower cover 13 may have support members 15. For example, the support member 15 may be provided only in the lower cover 13, the circuit board 14 may be placed on the support member 15, and then the upper cover 12 may be fastened onto the lower cover 13 to complete the assembly operation of the circuit board 14; after the upper cover 12 is removed, the circuit board 14 still abuts against the support member 15 of the lower cover 13 without significant positional displacement, so that the cables or electrical connectors on the circuit board 14 remain reliably connected.

[0034] This utility model provides an inner shell assembly 1 for installation in the outer shell 2 of a hair stylist. The inner shell assembly 1 includes an upper cover 12, a lower cover 13, and a circuit board 14. The upper cover 12 and the lower cover 13 are detachably connected. At least one of the upper cover 12 and the lower cover 13 has a receiving space to form a mounting cavity 11 when combined between the upper cover 12 and the lower cover 13. The circuit board 14 is disposed within the mounting cavity 11 and located between the upper cover 12 and the lower cover 13. The circuit board 14 is detachably connected to both the upper cover 12 and the lower cover 13. At least one of the upper cover 12 and the lower cover 13 is provided with a support member 15 for mounting the circuit board 14, and the circuit board 14 at least abuts against the support member 15. With this setup, the circuit board 14 is placed on the support 15, and then the upper cover 12 and the lower cover 13 are assembled. Through the relative compression of the upper cover 12 and the lower cover 13, the circuit board 14 can be assembled and fixed simultaneously. Since the circuit board 14 can be detachably connected to both the upper cover 12 and the lower cover 13, the circuit board 14 can be exposed by disassembling the upper cover 12 and / or the lower cover 13, thus enabling the disassembly of the circuit board 14. The operation is simple and easy to implement, reducing the difficulty of assembling and disassembling the circuit board 14 and facilitating the installation and removal of the circuit board 14.

[0035] In some embodiments, such as Figure 2 and Figure 3 As shown, the support member 15 abuts against the outline edge of the circuit board 14. It can be understood that the outline edge of the circuit board 14 represents the position where the circuit board 14 directly contacts the external environment and has an edge. On one hand, the position where the circuit board 14 abuts against the support member 15 is located at the outline edge, which allows for a larger area and space to assemble cables or electrical connectors, facilitating circuit connections. On the other hand, the outline edge of the circuit board 14 is prone to being suspended; placing the support member 15 at the outline edge of the circuit board 14 reduces the suspended area of ​​the circuit board 14, increasing the stability of the assembled circuit board 14.

[0036] In some embodiments, such as Figure 2 and Figure 3As shown, the circuit board 14 has a first end face 141 and a second end face 142 opposite to each other in the thickness direction. It can be understood that the circuit board 14 is a plate-shaped component, and the thickness direction of the circuit board 14 represents its minimum outline dimension in a three-dimensional coordinate system. In the schematic diagram of this application, the thickness direction of the circuit board 14 is represented by N3, the first end face 141 represents the upper end face of the circuit board 14, and the second end face 142 represents the lower end face of the circuit board 14. Support members 15 are respectively provided on the upper cover 12 and the lower cover 13, and each support member 15 abuts against the corresponding first end face 141 and second end face 142. For ease of explanation, the support member 15 provided on the upper cover 12 is defined as the first support member 151, and the support member 15 provided on the lower cover 13 is defined as the second support member 152. It can be understood that the first support member 151 abuts against the first end face 141, and the second support member 152 abuts against the second end face 142, with the circuit board 14 sandwiched between the first support member 151 and the second support member 152. The circuit board 14 is abutted at both the top and bottom, which makes it easier for the circuit board 14 to be stably positioned between the upper cover 12 and the lower cover 13, thus improving the stability of the circuit board 14 after assembly.

[0037] In some embodiments, such as Figure 3 and Figure 4 As shown, multiple support members 15 are respectively provided on the upper cover 12 and the lower cover 13, with each support member 15 located on both sides of the circuit board 14 in the width direction. It can be understood that, in the direction perpendicular to the thickness direction of the circuit board 14, the wide side and long side of the circuit board 14 form the maximum cross-section of the circuit board 14. The length direction of the circuit board 14 is the direction of its maximum outline dimension in the three-dimensional coordinate system. Correspondingly, the width direction of the circuit board 14 is the outline direction where the outline dimension of the maximum cross-section of the circuit board 14 is less than its length. Figure 3 and Figure 4 In the schematic diagram shown, direction N1 represents the width direction of circuit board 14, and direction N2 represents the length direction of circuit board 14. The upper cover 12 is provided with multiple first support members 151, each located on both sides of circuit board 14 in the width direction and abutting against the first end face 141. The lower cover 13 is provided with multiple second support members 152, each also located on both sides of circuit board 14 in the width direction and abutting against the second end face 142. Each of the first end face 141 and the second end face 142 is abutted against by multiple support members 15 in the width direction. The combined action of these support members 15 increases the area and support position of circuit board 14, ensuring that opposite sides of circuit board 14 are supported in the width direction. This reliably restricts the position of circuit board 14 in the width direction, facilitating its placement on the support members 15 for rapid assembly.

[0038] In some embodiments, such as Figure 3 and Figure 4 As shown, the support members 15 located on the same side of the upper cover 12 are spaced apart along the length of the circuit board 14; and / or, the support members 15 located on the same side of the lower cover 13 are spaced apart along the length of the circuit board 14. The first support member 151 may be spaced apart along the length of the circuit board 14, the second support member 152 may be spaced apart along the length of the circuit board 14, or both the first support member 151 and the second support member 152 may be spaced apart along the length of the circuit board 14. Regardless of which embodiment the support members 15 are configured in, multiple support members 15 are distributed along the length of the circuit board 14, and each support member 15 jointly supports the circuit board 14 along its length, increasing the support arm along the length of the circuit board 14 and improving the stability of the circuit board 14 after assembly.

[0039] In some embodiments, such as Figure 3 and Figure 4 As shown, on the same side of the circuit board 14 in the width direction, each support member 15 on the upper cover 12 and each support member 15 on the lower cover 13 are arranged opposite each other in pairs. That is, in the thickness direction of the circuit board 14, a first support member 151 and a second support member 152 are arranged opposite each other to form a support group. Each side of the circuit board 14 in the width direction also has a support group, and there are multiple support groups in the length direction of the circuit board 14. Among them, the distance between two opposing support members 15 is less than or equal to the thickness of the circuit board 14. That is, in each support group, the distance between the first support member 151 and the second support member 152 in the thickness direction is less than or equal to the thickness of the circuit board 14. When the distance between the first support member 151 and the second support member 152 in the thickness direction is less than the thickness of the circuit board 14, the first support member 151 abuts against the first end face 141, and the second support member 152 abuts against the second end face 142, and the first support member 151 and the second support member 152 reliably clamp the circuit board 14. When the distance between the first support member 151 and the second support member 152 in the thickness direction is equal to the thickness of the circuit board 14, it is convenient to maintain the structural strength of the circuit board 14 and reduce the possibility of damage to the circuit board 14.

[0040] In some embodiments, such as Figure 3As shown, the support member 15 is a support rib, and the end of the support rib that abuts against the circuit board 14 is either a flat surface or a stepped surface 153. It can be understood that "stepped surface 153" means that one end of the support rib forms two mutually perpendicular planes, and the edge of the circuit board 14 is engaged at the right angle of the stepped surface 153. When one end of the support member 15 is a flat surface, the circuit board 14 only needs to be placed on the flat surface during assembly, without the need for additional position calibration, facilitating the assembly and disassembly of the circuit board 14. When one end of the support member 15 is a stepped surface 153, a limiting groove is formed between the two opposing stepped surfaces 153 in the width direction of the circuit board 14. Placing the circuit board 14 within this limiting groove allows for one-step installation and positioning of the circuit board 14, reducing the assembly difficulty of the circuit board 14.

[0041] In some embodiments, such as Figure 2 and Figure 5 As shown, at least one of the upper cover 12 and the lower cover 13 is further provided with a positioning member 131, and at least one end of the circuit board 14 in the length direction abuts against the positioning member 131. One or more positioning members 131 can be provided, such that one or both ends of the circuit board 14 in the length direction abut against the positioning member 131. The positioning member 131 restricts the degree of freedom of the circuit board 14 in the length direction, resulting in higher stability of the assembled circuit board 14. Furthermore, when one end of the circuit board 14 in the length direction abuts against the positioning member 131, the circuit board 14 can be placed on the support member 15 first, and then moved along the length direction until the circuit board 14 abuts against the positioning member 131. The positioning member 131 provides physical feedback on whether the circuit board 14 is properly installed, facilitating more precise and intuitive installation of the circuit board 14, making the operation simple and easy to implement.

[0042] In some embodiments, such as Figure 6As shown, at least one of the upper cover 12 and the lower cover 13 is further provided with a locking member 132, and the circuit board 14 has a locking groove 143, with at least a portion of the locking member 132 inserted into the locking groove 143. Alternatively, the locking member 132 may be provided in the upper cover 12, and the circuit board 14 may be inserted into the upper cover 12 through the locking groove 143; or the locking member 132 may be provided in the lower cover 13, and the circuit board 14 may be inserted into the lower cover 13 through the locking groove 143. In some possible implementations, both the upper cover 12 and the lower cover 13 may be provided with locking members 132. In this embodiment, the circuit board 14 has at least two slots 143. For example, the circuit board 14 can be first inserted into the locking member 132 in the upper cover 12, so that one slot 143 on the circuit board 14 is inserted into the locking member 132 of the upper cover 12; after the lower cover 13 is fastened, the locking member 132 in the lower cover 13 is inserted into the other slot 143 of the circuit board 14. However, regardless of the arrangement, the circuit board 14 is inserted into the locking member 132 through the slot 143, which is simple in structure and allows for relatively quick assembly and disassembly of the circuit board 14.

[0043] In some embodiments, such as Figure 2 and Figure 3 As shown, either the upper cover 12 or the lower cover 13 is provided with a locking post 133, and the circuit board 14 is connected to the locking post 133 via a fastener (not shown in the figure). The upper cover 12 can be provided with a locking post 133, thus fixing the upper cover 12 and the circuit board 14 into a single assembly; alternatively, the lower cover 13 can be provided with a locking post 133, thus fixing the lower cover 13 and the circuit board 14 into a single assembly. Taking the lower cover 13 as an example, during assembly, the circuit board 14 can first be placed on the second support 152 and locked onto the locking post 133 of the lower cover 13, and then the upper cover 12 can be fastened onto the lower cover 13, thereby fixing the circuit board 14. This design simplifies the assembly and disassembly of the circuit board 14 while further improving the assembly stability of the circuit board 14.

[0044] Secondly, such as Figure 1 and Figure 3 As shown, this embodiment of the utility model provides a handle 10 for supporting a hair styling head 20. The handle 10 includes the inner shell assembly 1 described in the first aspect, and therefore has the same technical effect. Even when disassembling and assembling the circuit board 14, there is no need to set up a large number of fasteners to lock the circuit board 14, resulting in higher assembly efficiency and facilitating rework and maintenance.

[0045] like Figure 1 and Figure 3As shown, the handle 10 also includes a housing 2, which forms a receiving cavity 21 and has an opening 22 at one end communicating with the receiving cavity 21. The end of the housing 2 with the opening 22 is used to connect with the hair styling head 20. The inner housing assembly 1 is detachably installed in the receiving cavity 21 and connected to the hair styling head 20. Both the inner housing assembly 1 and the housing 2 are connected to the hair styling head 20 and together support the hair styling head 20. The contact area between the handle 10 and the hair styling head 20 is relatively large to improve the stability of the hair styling head 20 after it is connected to the handle 10.

[0046] Thirdly, such as Figure 1 As shown, this utility model embodiment provides a hair styling tool. The hair styling head 20 includes the handle 10 described in the second aspect, and therefore has the same technical effect, namely, the difficulty of disassembling and assembling the circuit board 14 is relatively low, which facilitates the improvement of production efficiency and also makes it convenient to realize rework and maintenance.

[0047] like Figure 1 As shown, the hair styling tool also includes a hair styling head 20, which is used for curling and / or straightening hair. Specifically, the hair styling head 20 can function solely as a curling iron for curling, or solely as a straightener for straightening, or it can combine both functions. For example, the hair styling head 20 can be equipped with a curling iron composed of two openable plates. The opposite sides of the two plates are flat, while the opposing sides are curved, to wrap around the hair and achieve curling. Specifically, when the two plates are open, the user can place their hair into the gap between the two plates, then close the plates again to clamp the hair, heat the hair, and pull it in a generally straight direction to achieve straightening. When the two plates are closed, the user can wrap their hair around the outer curved surfaces of the two plates and heat the hair to achieve curling.

[0048] like Figure 1 and Figure 3 As shown, the hair styling head 20 is detachably connected to the handle 10 and is located at the end of the housing 2 where the opening 22 is provided. Specifically, as... Figure 1As shown, a handle 10 can be configured with one or more hair styling heads 20. When a handle 10 is configured with one hair styling head 20, after connecting the hair styling head 20 to the handle 10, it can be used to curl and / or straighten hair. Separating the hair styling head 20 from the handle 10 allows for convenient storage of both the handle 10 and the hair styling head 20. When a handle 10 is configured with multiple hair styling heads 20, each head can perform different functions. For example, a handle 10 can be configured with one curling head and one straightening head. By connecting different types of hair styling heads 20 to the handle 10, curling and straightening can be achieved respectively. Of course, a handle 10 can also be configured with multiple curling heads, but each curling head can produce hair curls of different diameters. Connecting curling heads of different diameters to the handle 10 allows for the creation of hair curls of different diameters to meet diverse user needs. It should be noted that the present invention does not limit the specific type and number of hair styling heads 20, as long as the handle 10 is detachably connected to the hair styling head 20, so that consumers can use the hair styling tool flexibly.

[0049] 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. An inner shell assembly, characterized in that, The inner shell assembly includes: Top cover; The lower cover is detachably connected to the upper cover, and at least one of the upper cover and the lower cover has a receiving space to form a mounting cavity when combined between the upper cover and the lower cover; A circuit board is disposed within the mounting cavity and located between the upper cover and the lower cover; the circuit board is detachably connected to both the upper cover and the lower cover. At least one of the upper cover and the lower cover is provided with a support for mounting the circuit board, and the circuit board at least abuts against the support.

2. The inner shell assembly according to claim 1, characterized in that, The support abuts against the outline edge of the circuit board.

3. The inner shell assembly according to claim 1, characterized in that, The circuit board has a first end face and a second end face that are opposite each other in the thickness direction; the upper cover and the lower cover are respectively provided with the support members, and each support member abuts against the corresponding first end face and the second end face.

4. The inner shell assembly according to claim 3, characterized in that, The upper cover and the lower cover are respectively provided with a plurality of support members, and each support member is located on both sides of the circuit board in the width direction.

5. The inner shell assembly according to claim 4, characterized in that, The support members located on the same side of the upper cover are spaced apart along the length of the circuit board; and / or, The support members located on the same side of the lower cover are spaced apart along the length of the circuit board.

6. The inner shell assembly according to claim 4, characterized in that, Located on the same side of the width direction of the circuit board, each of the support members on the upper cover and each of the support members on the lower cover are arranged opposite to each other in pairs; The distance between two of the supporting members is less than or equal to the thickness of the circuit board.

7. The inner shell assembly according to claim 1, characterized in that, The support member is a support rib, and the end of the support rib that abuts against the circuit board is set as a plane or a stepped surface.

8. The inner shell assembly according to claim 1, characterized in that, At least one of the upper cover and the lower cover is further provided with a positioning member, and at least one end of the circuit board in the length direction abuts against the positioning member.

9. The inner shell assembly according to claim 1, characterized in that, At least one of the upper cover and the lower cover is provided with a locking member, and a slot is provided on the circuit board, with at least a portion of the locking member inserted into the slot.

10. The inner shell assembly according to claim 1, characterized in that, The upper cover or the lower cover is provided with a locking post, and the circuit board is connected to the locking post by fasteners.

11. A handle for supporting a hair styling head, characterized in that, The handle includes the inner shell assembly as described in any one of claims 1-10, and the handle further includes: The outer shell forms a receiving cavity, and has an opening at one end that communicates with the receiving cavity; The outer shell has an opening at one end for connecting to the hair styling head, and the inner shell assembly is detachably installed in the receiving cavity and connected to the hair styling head.

12. A hair styling tool, characterized in that, Including the handle of claim 11, the hair styling device further includes: A hair styling head for curling and / or straightening hair, the hair styling head being detachably connected to the handle and located at one end of the housing where the opening is provided.

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