Hair drier

Abstract

The hair dryer comprises a machine shell and a handle, a motor barrel and a heat insulation barrel are sequentially arranged in the machine shell in the air outlet direction, the handle comprises a handle inner shell and a handle outer shell, the handle inner shell is detachably connected with the machine shell, a limiting inserting piece extending upwards is arranged at the top end of the handle inner shell, and an inserting avoiding hole is formed in the machine shell; the motor cylinder is provided with a limiting groove corresponding to the insertion avoiding hole, and the limiting insertion piece penetrates through the insertion avoiding hole to be in insertion fit with the limiting groove so as to axially limit the motor cylinder. The handle inner shell and the machine shell are designed in a split mode, a mold can be simplified, the deformation rate of the handle inner shell in the injection molding process is reduced, and the process stability is improved; the limiting assembly is arranged between the handle inner shell and the motor barrel, so that the motor barrel can be axially limited after the handle inner shell is installed in place, axial displacement of the motor barrel can be prevented, the situation that a buckle at the rear end of the machine shell is broken due to large stress is avoided, the stability of the structure in the machine shell is improved, and the service life of the blower is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of small household appliances, in particular to a hair dryer. BACKGROUND

[0002] The hair dryer is usually composed of a handle and a body, and the common handle mounting mode is disclosed in the form of patent No. CN218105161U. The body and the handle inner shell are of an integrated structure. This structure is prone to bending deformation of the handle inner shell when the parts are injection molded, and the mold is complex and difficult to control in production.

[0003] In order to solve the above problems, another patent No. CN210783274U discloses another handle mounting mode. The handle inner shell and the body are connected by a buckle, which can realize detachable connection of the handle. This not only facilitates the processing of the handle inner shell, but also simplifies the installation process of the handle.

[0004] For the hair dryer with the above structure, the air duct assembly in the body is generally only axially limited by the structure of the two ends of the body shell. The axial size of the heat insulation cylinder of the air duct assembly increases after being heated, which may cause axial displacement of the motor cylinder. When the hair dryer falls, the air duct assembly may also be axially displaced. These conditions are not conducive to the stability of the body structure, which may cause the buckle at the rear end of the body shell to be subjected to a large stress, affecting the connection with the end cover, and ultimately affecting the service life of the product. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of hair dryer, to solve the technical problems that the detachable handle of existing can only realize the detachable installation with the shell of machine head, cannot provide additional effect of limiting the structure in shell, leading to the poor stability of machine head structure.

[0006] The utility model discloses a kind of hair dryer, including shell and handle, the motor cylinder and heat insulation cylinder are sequentially provided in the shell along air outlet direction, the handle includes handle inner shell and handle shell, the handle inner shell is detachably connected with the shell, the top of the handle inner shell is provided with the limiting plug-in part extending upwards, the shell is provided with plug-in avoiding hole, the motor cylinder is provided with the limiting slot corresponding with the plug-in avoiding hole, the limiting plug-in part is inserted into the limiting slot through the plug-in avoiding hole, to the motor cylinder axial limit.

[0007] The hair dryer of the utility model also has the following additional technical features:

[0008] The limiting plug-in part and the limiting slot are provided corresponding to the air outlet end of the motor cylinder.

[0009] The top surface of the limiting plug-in part and the bottom wall of the limiting slot are provided with a gap.

[0010] The top surface of the limiting plug-in part is an inclined surface, and the inclined surface is consistent with the inclined direction of the bottom wall of the limiting groove.

[0011] The limiting plug-in part is provided with two, respectively corresponding to the left and right sides of the air outlet end of the motor cylinder.

[0012] The limiting plug-in part and the plug-in avoiding hole are provided with a gap, and the gap is not greater than 1 mm.

[0013] The top of the handle inner shell is provided with a connecting seat, the bottom of the machine shell is provided with an annular protruding connecting part, the limiting plug-in part is arranged on the connecting seat, and the connecting seat is arranged on the outer side of the connecting part and is fastened by a fastener.

[0014] The handle inner shell comprises a first shell and a second shell which are radially spliced, the connecting seat is arranged on the inner side of the first shell, the connecting seat is provided with a screw hole, and the connecting part is provided with a screw column corresponding to the screw hole.

[0015] The upper ends of the first shell and the second shell are buckled, and the lower ends of the first shell and the second shell are screw-connected.

[0016] The top end of the handle outer shell is provided with an annular limiting rib, the machine shell is provided with an annular groove for receiving the limiting rib, a limiting block is arranged on part of the limiting rib, and the groove is provided with a limiting hole matched with the limiting block.

[0017] Due to the above technical scheme, the utility model has the following beneficial effects:

[0018] 1. The hair dryer of the utility model, the handle inner shell and the machine shell adopt split design, which can simplify the mold, reduce the deformation rate of the handle inner shell in the injection molding process, improve the process stability, improve the quality of the product, on the basis of detachable connection of the handle inner shell and the machine shell, a limiting assembly is arranged between the handle inner shell and the motor cylinder, so that the handle inner shell can be axially limited after being installed in place, the axial displacement of the motor cylinder can be prevented, the fracture of the buckle at the rear end of the machine shell due to large stress can be avoided, the stability of the inner structure of the machine shell is improved, and the service life of the hair dryer is prolonged.

[0019] 2. It can be understood that, since the heat-insulating cylinder is provided with a heating element, the heat-insulating cylinder may expand and increase in axial size due to the temperature of the heating element, in order to reduce the influence of the expansion of the heat-insulating cylinder on the motor cylinder, the limiting plug-in part and the limiting groove are arranged corresponding to the air outlet end of the motor cylinder, that is, the structure for limiting the motor cylinder is closer to the connection position of the heat-insulating cylinder and the motor cylinder, which is more conducive to preventing the motor cylinder from being axially displaced due to the expansion of the heat-insulating cylinder, thereby reducing the stress on the buckle at the rear end of the machine shell and improving the stability of the overall structure of the machine shell.

[0020] 3. In order to improve the installation reliability of the handle, a gap is provided between the top surface of the limiting plug-in part and the bottom wall of the limiting groove, which can compensate for the processing error of the limiting plug-in part, ensure reliable connection of the limiting plug-in part and the limiting groove, and avoid changes in structural size caused by the cold and hot cycle of the hair dryer, which can cause the limiting plug-in part to be in contact with the motor cylinder, resulting in the handle being skewed and affecting the stability of the connection between the handle and the casing.

[0021] 4. The motor cylinder is generally cylindrical in structure, the limiting groove is protruded on the motor cylinder, the bottom wall of the limiting groove is formed by the arc-shaped side wall of the motor cylinder, and the bottom wall of the limiting groove is inclined due to the influence of the shape of the motor cylinder. In order to better match the limiting plug-in part and the limiting groove, the top surface of the limiting plug-in part is inclined, and the inclination direction of the inclined surface is consistent with that of the bottom wall of the limiting groove. The design of the inclined surface of the limiting plug-in part can prevent interference between the limiting plug-in part and the limiting groove during insertion, and also has a certain guiding effect, which is beneficial to the quick insertion of the limiting plug-in part through the plug-in avoiding hole and then matched with the limiting groove, making the installation more smooth.

[0022] 5. In order to improve the limiting effect of the motor cylinder, two limiting plug-in parts are provided, which are arranged on the left and right sides of the air outlet end of the motor cylinder respectively. Thus, the end of the motor cylinder close to the heat insulation cylinder is uniformly and firmly limited by the two limiting plug-in parts, which can effectively prevent the motor cylinder from axial displacement, and can avoid the problem that the limiting plug-in part may be broken and the limiting effect may be lost when a larger impact is applied to the limiting plug-in part used alone.

[0023] 6. In order to facilitate the installation of the handle inner shell, the diameter of the plug-in avoiding hole is slightly larger than the outer diameter of the limiting plug-in part, so that the limiting plug-in part can quickly pass through the plug-in avoiding hole and then be matched with the limiting groove. On this basis, the single-sided gap between the plug-in avoiding hole and the limiting plug-in part should be as small as possible, such as not more than 1 mm, which can limit the rotation of the handle inner shell in the circumferential direction, improve the positioning accuracy of the handle inner shell, and thus reliably connect the limiting plug-in part and the limiting groove.

[0024] 7. In order to improve the connection effect of the handle inner shell and the casing, the top of the handle inner shell is provided with a connecting seat, the bottom of the casing is provided with a ring-shaped protruding connecting part, and the connecting seat is sleeved on the outside of the connecting part and fastened by a fastener. The connection mode of nesting and fastening has high connection strength, the connection between the handle inner shell and the casing is uniformly stressed in the circumferential direction, which can improve the connection stability, and the wrapping of the connecting seat on the connecting part is beneficial to the accurate positioning of the handle inner shell, which can prevent the handle from being installed skewly. Further, the limiting plug-in part is provided on the connecting seat, which makes the installation of the handle inner shell and the limiting of the motor cylinder consistent, which is beneficial to the quick insertion of the limiting plug-in part into the limiting groove and prevents deviation during installation, thereby ensuring the reliability of the plug-in.

[0025] Further, in order to facilitate the fastening of the handle inner shell and the machine shell, the handle inner shell is composed of a first shell and a second shell which are radially spliced, the connecting seat is arranged on the inner side of the first shell, the connecting seat is provided with a screw hole, the connecting part is provided with a screw column corresponding to the screw hole, and during specific installation, the first shell is first connected with the machine shell, so that the screw is conveniently arranged on the connecting seat and the connecting part, and then the second shell is installed, so that the convenience of installation is ensured, and the reliability of the connection between the handle inner shell and the machine shell is improved through the first shell and the second shell wrapping the screw fixing structure.

[0026] Further, the upper ends of the first shell and the second shell are buckled, and the lower ends of the first shell and the second shell are screw-connected, so that the number of screws is reduced and the installation efficiency is improved under the premise of ensuring the firm installation of the first shell and the second shell.

[0027] 8. In order to improve the installation effect of the handle outer shell and the machine shell, the top end of the handle outer shell is provided with an annular limiting rib, the machine shell is provided with an annular groove for receiving the limiting rib, the limiting rib and the groove are matched to ensure the flatness of the handle joint line and prevent the joint line from being misaligned, further, a limiting block is protruded on part of the limiting rib, a limiting hole is arranged in the groove and matched with the limiting block, the matching of the limiting block and the limiting hole can ensure the positioning accuracy of the handle outer shell in the circumferential direction and prevent the joint line from having a height difference, so as to ensure the smooth appearance of the machine shell and the handle, in addition, the limiting rib is inserted into the interior of the machine shell, when the handle is subjected to a bending moment in the front-rear direction, the limiting rib can provide auxiliary supporting force, further improving the structural strength of the handle, so that the user can hold and use the handle more safely and reliably. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate certain illustrative embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0029] Figure 1 It is an explosion structure schematic view of the machine shell, the handle inner shell and the handle outer shell under an embodiment of the present application.

[0030] Figure 2 It is an explosion structure schematic view of the air duct assembly and the handle inner shell under an embodiment of the present application.

[0031] Figure 3 It is Figure 2 It is a schematic view of the limiting plug-in part of the handle inner shell in the machine shell being inserted into the limiting groove of the motor cylinder.

[0032] Figure 4 It is a schematic view of the limiting plug-in part and the limiting groove being plug-in matched under an embodiment of the present application.

[0033] Figure 5 Figure 1 is a schematic view of the structure of the handle inner shell according to an embodiment of the present application.

[0034] Figure 6 Figure 2 is a schematic view of the structure of the casing and handle outer shell according to an embodiment of the present application.

[0035] Reference signs:

[0036] 10, casing; 101, plug-avoiding hole; 102, connecting part; 103, groove; 104, limiting hole; 11, motor cylinder; 12, heat insulation cylinder; 13, handle inner shell; 131, connecting seat; 132, first shell; 1321, clamping groove; 133, second shell; 1331, clamping hook; 14, handle outer shell; 141, limiting rib; 142, limiting block; 15, limiting plug; 151, inclined surface; 16, limiting groove; 17, gap; 18, screw column; 19, screw hole. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail in an exemplary manner in combination with the drawings.

[0038] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail in an exemplary manner in combination with the drawings.

[0039] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0040] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of the technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0042] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. However, it is noted that direct connection means that the two main bodies connected by the connection relationship are not connected by the transition structure, but are connected to form a whole only by the connection structure. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] As Figures 1 to 6 As shown in the figure, the present application provides a hair dryer, which comprises a casing 10 and a handle, the casing 10 is provided with a motor cylinder 11 and a heat insulation cylinder 12 in sequence along the air outlet direction, the handle comprises a handle inner casing 13 and a handle outer casing 14, the handle inner casing 13 is detachably connected with the casing 10, the top end of the handle inner casing 13 is provided with a limiting plug-in part 15 extending upward, the casing 10 is provided with a plug-in avoiding hole 101, the motor cylinder 11 is provided with a limiting groove 16 corresponding to the plug-in avoiding hole 101, the limiting plug-in part 15 is plug-in matched with the limiting groove 16 through the plug-in avoiding hole 101, so as to axially limit the motor cylinder 11.

[0045] The handle inner shell 13 and the shell 10 adopt a split design, the mold can be simplified, the deformation rate of the handle inner shell 13 in the injection molding process is reduced, the process stability is improved, and the quality of the product is improved; on the basis that the handle inner shell 13 and the shell 10 are detachably connected, a limiting assembly is arranged between the handle inner shell 13 and the motor cylinder 11, so that the motor cylinder 11 can be axially limited after the handle inner shell 13 is installed in place, axial displacement of the motor cylinder 11 can be prevented, fracture of the buckle at the rear end of the shell 10 due to large stress can be avoided, the stability of the structure in the shell 10 is improved, and the service life of the hair dryer is prolonged.

[0046] It can be understood that the motor cylinder 11 and the heat insulation cylinder 12 are connected to form an air duct assembly, in the prior art, one end of the air duct assembly is limited by the front end of the shell 10, and the other end of the air duct assembly is sleeved with the air inlet protection piece to be limited, in the case that the heat insulation cylinder 12 is heated and expanded to cause the axial dimension to become longer, or the air duct assembly is impacted when the hair dryer falls, the air duct assembly may still be axially displaced, first, the buckle at the rear end of the shell 10 is easily subjected to large stress to aggravate the fracture of the buckle, and second, the hair dryer may be disintegrated when falling. In order to solve the above problems, the application adds axial limiting of the air duct assembly, and the limiting plug-in part 15 and the limiting groove 16 are plug-in matched to realize additional limiting effect, so as to improve the stability of the structure of the shell 10.

[0047] Compared with the detachable handle in the prior art, the limiting plug-in part 15 is integrated on the handle inner shell 13 of the application, and the installation of the handle inner shell 13 and the limiting of the motor cylinder 11 can be realized at the same time only by connecting the handle inner shell 13 and the shell 10 in one step, the installation step is simple, the structure is compact, the volume of the hair dryer is not increased, and the overall performance of the hair dryer is improved.

[0048] The limiting plug-in part 15 can be a cylindrical limiting pin, which is beneficial to be arranged, and can improve the installation efficiency. Alternatively, the limiting plug-in part 15 can be a limiting rib, a limiting boss or the like, which can be set according to actual needs. The plug-in avoiding hole 101 is a through hole, and the limiting groove 16 is provided with an opening downward, so that the limiting plug-in part 15 is inserted into the limiting groove 16 through the opening.

[0049] As a preferred embodiment, the limiting plug-in part 15 and the limiting groove 16 are arranged corresponding to the air outlet end of the motor cylinder 11.

[0050] It can be understood that, due to the heating element arranged in the heat insulation cylinder 12, the heat insulation cylinder 12 may expand and become longer in axial dimension under the influence of the temperature of the heating element. In order to reduce the influence of the expansion of the heat insulation cylinder 12 on the motor cylinder 11, the closer the structure limiting the motor cylinder 11 to the connecting position of the heat insulation cylinder 12 and the motor cylinder 11, the more conducive to preventing the axial displacement of the motor cylinder 11 caused by the expansion of the heat insulation cylinder 12, so as to reduce the stress on the buckle at the rear end of the machine shell 10 and improve the stability of the overall structure of the machine shell 10.

[0051] Specifically, the limiting plug-in part 15 and the limiting slot 16 are arranged at the air outlet end of the motor cylinder 11, that is, the projection of the limiting plug-in part 15 and the limiting slot 16 on the motor cylinder 11 to the air outlet end of the motor cylinder 11 is shorter than the projection to the air inlet end of the motor cylinder 11, and preferably, as shown in Figure 2 and Figure 3 The limiting plug-in part 15 and the limiting slot 16 are arranged close to the connecting position of the motor cylinder 11 and the heat insulation cylinder 12, which can strengthen the axial limiting of the motor cylinder 11.

[0052] As a preferred embodiment, a gap 17 is arranged between the top surface of the limiting plug-in part 15 and the bottom wall of the limiting slot 16.

[0053] As shown in Figure 4 , when the limiting plug-in part 15 is inserted, the gap 17 can compensate for the processing error of the limiting plug-in part 15, ensure reliable connection between the limiting plug-in part 15 and the limiting slot 16, and avoid changes in structural size caused by the cold and hot cycle of the hair dryer, which may cause the limiting plug-in part 15 to abut against the motor cylinder 11 and cause the handle to be skewed, thereby affecting the stability of the connection between the handle and the machine shell 10.

[0054] As a preferred embodiment, the top surface of the limiting plug-in part 15 is a slope 151, and the slope 151 is consistent with the inclination direction of the bottom wall of the limiting slot 16.

[0055] The motor cylinder 11 is generally cylindrical in structure, the limiting slot 16 is protruded on the motor cylinder 11, the bottom wall of the limiting slot 16 is formed by the arc-shaped side wall of the motor cylinder 11, and the bottom wall of the limiting slot 16 is arranged obliquely due to the influence of the shape of the motor cylinder 11. In order to better match the limiting plug-in part 15 and the limiting slot 16, as shown in Figure 2 and Figure 4 , the slope 151 of the limiting plug-in part 15 is designed to prevent interference with the limiting slot 16 during insertion, and also plays a certain guiding role, which is conducive to the quick passage of the limiting plug-in part 15 through the plug-in avoiding hole 101 and then cooperates with the limiting slot 16, making the installation more smooth.

[0056] As a preferred embodiment, two limiting inserts 15 are arranged on the left and right sides of the air outlet end of the motor cylinder 11, and the motor cylinder 11 is provided with two limiting grooves 16 at the bottom of the motor cylinder 11.

[0057] As shown in Figure 2 , the end of the motor cylinder 11 close to the heat insulation cylinder 12 is uniformly and firmly limited by the two limiting inserts 15, which can effectively prevent the axial displacement of the motor cylinder 11 and avoid the problem of limiting failure caused by the possible fracture of the limiting insert 15 when a larger impact is applied.

[0058] As a preferred embodiment, a gap is provided between the limiting insert 15 and the plug-avoiding hole 101, and the gap is not greater than 1 mm.

[0059] Specifically, the diameter of the plug-avoiding hole 101 is slightly larger than the outer diameter of the limiting insert 15, so that the limiting insert 15 can pass through the plug-avoiding hole 101 quickly and cooperate with the limiting groove 16. On this basis, the single-sided gap between the plug-avoiding hole 101 and the limiting insert 15 should be as small as possible, such as not greater than 1 mm, which can limit the rotation of the handle inner shell 13 in the circumferential direction, improve the positioning accuracy of the handle inner shell 13, and thus reliably connect the limiting insert 15 and the limiting groove 16.

[0060] As a preferred embodiment, the top of the handle inner shell 13 is provided with a connecting seat 131, the bottom of the machine shell 10 is provided with an annular protruding connecting part 102, the limiting insert 15 is arranged on the connecting seat 131, and the connecting seat 131 is sleeved on the outside of the connecting part 102 and fastened by a fastener.

[0061] As shown in Figure 1 , the handle inner shell 13 and the machine shell 10 adopt a connection mode of nesting and fastening, the connection strength is high, the handle inner shell 13 and the machine shell 10 are uniformly stressed in the circumferential direction, which can improve the connection stability, and the connecting seat 131 wrapping the connecting part 102 is conducive to the accurate positioning of the handle inner shell 13, which can prevent the handle from being installed obliquely; further, the limiting insert 15 is arranged on the connecting seat 131, which makes the installation of the handle inner shell 13 and the limiting of the motor cylinder 11 consistent, which is conducive to the quick insertion of the limiting insert 15 into the limiting groove 16 and prevents the offset during installation, thereby ensuring the plug reliability.

[0062] In one embodiment, the handle inner shell 13 includes a first shell 132 and a second shell 133 which are radially spliced, the connecting seat 131 is arranged on the inner side of the first shell 132, the connecting seat 131 is provided with a screw hole 19, and the connecting part 102 is provided with a screw column 18 corresponding to the screw hole 19.

[0063] As shown in Figure 1As shown, the bottom of the connecting seat 131 is provided with a first boss extending inwardly, and the screw hole 19 is provided on the first boss. The connecting part 102 is provided with a second boss extending inwardly, and the screw column 18 is provided on the second boss. When the second boss is abutted against the first boss during the sleeving, the screw column 18 and the screw hole 19 can be aligned, and the connecting seat 131 can support the connecting part 102, which is beneficial to the accurate positioning of the handle inner shell 13, and can also strengthen the structural strength of the connecting position of the handle inner shell 13 and the machine shell 10, and improve the connection reliability.

[0064] During the specific installation, the first shell 132 is first connected with the machine shell 10, which facilitates the screwing of the connecting seat 131 and the connecting part 102, and then the second shell 133 is installed, which not only ensures the convenience of installation, but also can improve the reliability of the connection between the handle inner shell 13 and the machine shell 10 through the first shell 132 and the second shell 133 wrapping the screw fixing structure.

[0065] Further, the upper ends of the first shell 132 and the second shell 133 are buckled, and the lower ends of the first shell 132 and the second shell 133 are screwed.

[0066] Under the premise of ensuring the firm installation of the first shell 132 and the second shell 133, this connection mode can reduce the number of screws and improve the installation efficiency. Figure 5 As shown, the upper ends of the second shell 133 are provided with clamping hooks 1331, and correspondingly, the first shell 132 is provided with clamping grooves 1321 at the corresponding positions. The preliminary fixation of the first shell 132 and the second shell 133 can be realized through the clamping of the clamping hooks 1331 and the clamping grooves 1321. The lower end of the first shell 132 is provided with a screw column 18, and the lower end of the second shell 133 is provided with a screw hole 19 at the corresponding position. The fastening of the first shell 132 and the second shell 133 can be realized through the screwing of the screw hole 19 and the screw column 18, which can ensure the stability and reliability of the overall structure of the handle inner shell 13.

[0067] As a preferred embodiment, the top end of the handle outer shell 14 is provided with an annular limiting rib 141, and the machine shell 10 is provided with an annular groove 103 for receiving the limiting rib 141, as shown in Figure 6 The cooperation of the limiting rib 141 and the groove 103 can ensure the flatness of the handle joint line and prevent the joint line from being misaligned. Moreover, when the handle is subjected to a bending moment in the front-rear direction, the limiting rib 141 can provide auxiliary support force, further improving the structural strength of the handle, and making the user hold the handle more safely and reliably during use.

[0068] Further, a limiting block 142 is provided on part of the limiting rib 141, and a limiting hole 104 is provided in the groove 103 for inserting and cooperating with the limiting block 142, as shown in Figure 6As shown, the positioning of the handle shell 14 in the circumferential direction can be ensured by the cooperation of the limiting block 142 and the limiting hole 104, the height difference of the joint line is prevented, the smooth appearance of the casing 10 and the handle is ensured, and thus the appearance of the hair dryer is ensured to be beautiful.

[0069] The technical scheme of the utility model is not limited to the above embodiment, it should be pointed out that the technical scheme of any one embodiment and the technical scheme of one or more other embodiments are combined in the protection scope of the utility model. Although the utility model has been described in detail by general description and specific embodiments above, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the protection scope of the utility model.

Claims

1. A hair dryer comprising a casing and a handle, the casing having a motor cylinder and a heat insulation cylinder arranged in sequence in an air outlet direction, the handle comprising a handle inner casing and a handle outer casing, characterized in that the handle inner casing is detachably connected to the casing, the handle inner casing is provided with a limiting insert extending upward at a top end thereof, the casing is provided with an insert avoiding hole, the motor cylinder is provided with a limiting slot corresponding to the insert avoiding hole, and the limiting insert is inserted into the limiting slot through the insert avoiding hole to axially limit the motor cylinder.

2. The hair dryer according to claim 1, characterized in that the limiting insert and the limiting slot are arranged corresponding to an air outlet end of the motor cylinder.

3. The hair dryer according to claim 1, characterized in that a gap is arranged between a top surface of the limiting insert and a bottom wall of the limiting slot.

4. The hair dryer according to claim 1, characterized in that the top surface of the limiting insert is an inclined surface, and the inclined surface is consistent with an inclined direction of the bottom wall of the limiting slot.

5. The hair dryer according to claim 1, characterized in that two limiting inserts are arranged corresponding to left and right sides of the air outlet end of the motor cylinder respectively.

6. The hair dryer according to claim 1, characterized in that a gap is arranged between the limiting insert and the insert avoiding hole, and the gap is not greater than 1 mm.

7. The hair dryer according to claim 1, characterized in that the handle inner casing is provided with a connecting seat at a top portion thereof, the casing is provided with a connecting portion protruding annularly at a bottom portion thereof, the limiting insert is arranged on the connecting seat, and the connecting seat is sleeved outside the connecting portion and fastened by a fastener.

8. The hair dryer according to claim 7, characterized in that the handle inner casing comprises a first casing and a second casing spliced radially, the connecting seat is arranged inside the first casing, the connecting seat is provided with a screw hole, and the connecting portion is provided with a screw column corresponding to the screw hole.

9. The hair dryer according to claim 8, characterized in that the first casing and the second casing are buckled at upper ends thereof, and the first casing and the second casing are screwed at lower ends thereof.

10. The hair dryer according to claim 1, characterized in that the handle outer casing is provided with an annular limiting rib at a top end thereof, the casing is provided with an annular groove receiving the limiting rib, a limiting block is protruded on part of the limiting rib, and the groove is provided with a limiting hole inserted into the limiting block. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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