Blower capable of rotating in two directions

Abstract

The invention discloses a blower capable of rotating bidirectionally, which comprises a handle and an air supply assembly, and is characterized in that the handle comprises a handle body; the air supply assembly is connected with the movable end of the handle joint structure for the household appliance. The handle joint structure for the household appliance comprises a first component, a second component and a connecting module, the air supply assembly is connected with the first component; and the connecting module is arranged above the handle body. The air supply assembly and the handle body are both connected with the handle joint structure for the household appliance, so that the air supply assembly can rotate relative to the handle with the handle joint structure for the household appliance as a rotating fulcrum, and the first component and the second component cannot rotate relative to each other when being in a mutually embedded and abutted state. When rotating force is applied, the second component deforms so as to release the embedding and abutting state of the first component, so that the first component and the second component can rotate relatively, and the forward and reverse two-way rotating function of the blower is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of hair dryers, and in particular relates to a hair dryer capable of bidirectional rotation. Background Art

[0002] A hair dryer is a device used for drying and styling hair. It delivers air through a blower and heats the air through an internal heating element. Foldable hair dryers have been developed for travel or home storage purposes. These can be easily folded or reopened according to the needs of the usage scenario. However, this rotation method only meets the folding requirement and cannot meet the needs when the user requires a specific blowing angle. The rotation angle is small and can only be rotated in one direction relative to the front of the handle, realizing two optional modes of folding and opening. In addition, the assembly process of the hair dryer handle is cumbersome, as the installation and fixing of multiple components is relatively cumbersome. To solve at least one of the above technical problems, it is necessary to develop a hair dryer that can rotate in both directions. Summary of the Invention

[0003] The object of the present invention is to provide a hair dryer that can rotate in both directions to solve the above-mentioned technical problems. The air supply component and the handle body are both connected to the joint structure of the handle for household appliances, so that the air supply component can rotate relative to the handle with the joint structure of the handle for household appliances as a rotation fulcrum, wherein the first component and the second component cannot rotate relative to each other when they are in a mutually engaged and conflicting state. When a rotational force is applied, the second component is deformed to release the engaged and conflicting state of the first component, so that the first component and the second component can rotate relative to each other. Further release of the force will restore to the conflict limit state, so that the first component and the second component maintain a certain angle. This switching between the rotating and non-rotating states is achieved by applying force to deform and release the limit to achieve relative rotation and restore the conflict limit without applying force. The implementation method is convenient and the structure is simple, and the forward and reverse bidirectional rotation function of the hair dryer is achieved.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0005] A hair dryer capable of bidirectional rotation comprises a handle and an air supply assembly, wherein the handle comprises a handle body; the air supply assembly is connected to a movable end of a joint structure of a handle for household appliances;

[0006] The household appliance handle joint structure comprises a first component and a second component coaxially arranged and interlocked to limit or deform to release the limit for relative rotation, and a connecting module providing a fulcrum for the relative rotation of the first component and the second component;

[0007] The air supply assembly is connected to the first component; the connection module is arranged above the handle body.

[0008] Preferably, the connecting module includes a connecting shaft that is coaxially connected to the first component and the second component and enables the two to rotate relative to each other.

[0009] Preferably, the handle further comprises an outer shell sleeved on the handle body, a first fixing member and a second fixing member which abut to fix the outer shell.

[0010] Preferably, the first fixing member is arranged at the upper end of the handle body, the second fixing member is arranged at the lower end of the handle body, and the two axial sides of the outer shell are respectively in conflict with the first fixing member and the second fixing member.

[0011] Preferably, the first fixing member includes a first fixing member body and a first buckle fixedly arranged on the first fixing member body;

[0012] The connecting module is provided with a first buckle hole which is buckled and connected to the first buckle;

[0013] The lower end surface of the first fixing member body contacts the upper end surface of the outer shell.

[0014] Preferably, the second fixing member includes a second fixing member body connected to an end of the handle body away from the connecting module;

[0015] A first boss is provided inside the outer shell, and two sides of the first boss are respectively in conflict with the handle body and the second fixing member body.

[0016] Preferably, the second fixing member further includes an end cover connected to the second fixing member body.

[0017] Preferably, the second fixing member body is provided with one or more second buckles;

[0018] The end cover is provided with a second buckle hole which is buckled and connected to the second buckle.

[0019] Preferably, the side surface of the end cover is in conflict with the inner surface of the outer shell;

[0020] The lower end of the end cover is flush with the lower end of the outer shell.

[0021] Preferably, the air supply component is provided with a connection frame;

[0022] The outer surface of the first component is in contact with the inner surface of the connecting frame, and the outer surface of the connecting frame is in contact with the inner surface of the rotating shell.

[0023] This application has achieved beneficial technical effects:

[0024] The air supply component and the handle body of the present invention are connected to the joint structure of the handle for household appliances, so that the air supply component can rotate relative to the handle with the joint structure of the handle for household appliances as a rotating fulcrum, wherein the first component and the second component cannot rotate relative to each other when they are in a mutually engaged and conflicting state. When a rotational force is applied, the second component is deformed to release the engaged and conflicting state with the first component, so that the first component and the second component can rotate relative to each other. Further release of the force will restore to the conflict limit state, so that the first component and the second component maintain a certain angle. This switching between the rotating and non-rotating states is achieved by releasing the limit by applying force to deform the air supply component to rotate relative to each other and restoring the conflict limit by not applying force. The implementation method is convenient and the structure is simple, and the forward and reverse bidirectional rotation function of the hair dryer is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shown is one of the structural diagrams of a hair dryer;

[0026] Figure 2 Shown is the second structural diagram of the hair dryer;

[0027] Figure 3 The figure shows a schematic diagram of the connection structure between the air supply assembly and the joint structure of the handle for household appliances;

[0028] Figure 4 Shown is an exploded structural diagram of the joint structure of the air supply assembly and the handle for household appliances;

[0029] Figure 5 Shown Figure 2 CC-direction cross-sectional structural diagram;

[0030] Figure 6 Shown is a schematic diagram of the exploded structure of the handle;

[0031] Figure 7 Shown is one of the schematic diagrams of the assembly structure of the joint structure;

[0032] Figure 8 Shown is the second schematic diagram of the assembly structure of the joint structure;

[0033] Figure 9 Shown is one of the exploded structural diagrams of the joint structure;

[0034] Figure 10 Shown is the second exploded structural diagram of the joint structure;

[0035] Figure 11 Shown is one of the structural schematic diagrams of the first component;

[0036] Figure 12 Shown is the second structural diagram of the first component;

[0037] Figure 13 Shown is a schematic structural diagram of the interference groove;

[0038] Figure 14 Shown is a schematic structural diagram of the second component;

[0039] Figure 15 FIG1 is a schematic diagram showing the assembly structure of the first component and the rotating housing;

[0040] Figure 16 FIG2 is a second schematic diagram of the assembly structure of the first component and the rotating housing;

[0041] Figure 17 FIG3 is a third schematic diagram of the assembly structure of the first component and the rotating housing;

[0042] Figure 18 FIG4 is a fourth schematic diagram of the assembly structure of the first component and the rotating housing;

[0043] Figure 19 Shown is one of the exploded structural diagrams of the first component and the rotating shell;

[0044] Figure 20 FIG2 is a second exploded structural diagram of the first component and the rotating shell;

[0045] Figure 21 The figure shows one of the structural diagrams of the joint structure setting connection module;

[0046] Figure 22 The figure shows the second structural diagram of the joint structure setting connection module;

[0047] Figure 23 Shown Figure 22 AA-direction cross-sectional structural diagram;

[0048] Figure 24 Shown is the third exploded structural diagram of the joint structure;

[0049] Figure 25 The fourth diagram of the exploded structure of the joint structure is shown;

[0050] Figure 26 Shown is a schematic diagram of the connection state of the connecting shaft and the second component;

[0051] Figure 27 Shown is a schematic diagram of the positional relationship between the first protrusion and the first engaging portion DETAILED DESCRIPTION

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0053] The technical solution of the present invention is described in detail below with reference to specific embodiments.

[0054] Reference Figures 1 to 27 As shown, a joint structure for a handle of a household appliance includes a first member 1 and a second member 2 coaxially arranged and interlocked to limit or deform to release the limit to allow relative rotation. When the first member 1 and the second member 2 are in a mutually interlocked and conflicting state, they cannot rotate relative to each other. When a rotational force is applied, the second member 2 deforms to release the interlocking and conflicting state with the first member 2, allowing the first member 1 and the second member 2 to rotate relative to each other. Further release of the force restores the state to the conflicting and limiting state, maintaining a certain angle between the first member 1 and the second member 2. This switching between the rotating and non-rotating states is achieved by applying force to release the limit to allow relative rotation and restoring the conflicting limit without applying force. This method is convenient to implement and has a simple structure.

[0055] The first component 1 includes a first connecting member 11 and a first fitting portion 12 provided on the first connecting member 11;

[0056] The second member 2 includes a second connecting member 21 coaxially arranged with the first connecting member 11, and a second interlocking portion 22 arranged on the second connecting member 21 and interlocked with the first interlocking portion 12 to limit the position. The first connecting member 11 and the second connecting member 21 are coaxially arranged, and are respectively provided with a first interlocking portion 12 and a second interlocking portion 22 that can interlock and interfere with each other, thereby limiting the rotation of the first member 1 and the second member 2; when rotation is required, force is applied to the first connecting member 11 to reach a pre-rotation state, so that the first interlocking portion 12 squeezes the second interlocking portion 22, causing the second connecting member 21 to deform, thereby releasing the interlocking and interlocking state between the first interlocking portion 12 and the second interlocking portion 22, so that the first member 1 and the second member 2 can rotate relative to each other; similarly, force can be applied to the first connecting member 11 to achieve a pre-rotation state. The force is applied to the second component 2 to reach a pre-rotation state, so that the first engaging portion 12 squeezes the second engaging portion 22, causing the second connecting member 21 to deform, thereby releasing the engaging and conflicting state between the first engaging portion 12 and the second engaging portion 22, so that the first component 1 and the second component 2 can rotate relative to each other; when the force is released, the state of the first component 1 and the second component 2 is restored to a limited position; this switching between the rotating and non-rotating states is achieved by releasing the limit by applying force and deformation to achieve relative rotation and restoring the conflict limit without applying force, which is convenient to achieve and has a simple structure.

[0057] Preferably, at least one of the first member 1 and the second member 2 has the function of being deformed by being squeezed. Specifically, one or more of the first connecting member 11, the second connecting member 21, the first fitting portion 12, and the second fitting portion 22 has the function of being deformed by being squeezed; by being deformed by being squeezed, the interlocking limiting state is released, and the relative rotation of the first member 1 and the second member 2 is achieved.

[0058] The first component 1 and the second component 2 are coaxially arranged from the outside to the inside. The coaxially arranged first component 1 and the second component 2 are convenient for mutual engagement to achieve mutual interference and limit, or for mutual compression to achieve deformation and release of limit.

[0059] The first connecting member 11 includes a first connecting body 111, a first cavity 112 disposed in the first connecting body 111 and accommodating the second connecting member 21, and the first fitting portion 12 includes a first groove 121 disposed on the inner surface of the first cavity 112, and first protrusions 122 disposed on both sides of the first groove 121.

[0060] The second connecting member 21 includes a second connecting body 211 coaxially disposed within the first cavity 112, a deformable portion 212 disposed on the second connecting body 211, and a second engaging portion 22 including a second protrusion 221 disposed on the deformable portion 212 and engageable within the first groove 121. The first engaging portion 12 and the second engaging portion 22 are disposed opposite each other, forming a concentrically encircling state. The first engaging portion 12 is disposed on a radial surface within the first cavity 112. The first cavity 112 has an opening communicating with the outside, wherein the opening is disposed on one side of the first connecting body 111 in the axial direction, facilitating assembly of the second component 2 into the first cavity 112. Specifically, the first groove 121 and the first protrusion 122 are arranged circumferentially around the first cavity 112. The first groove 121 and the second protrusion 221 are engaged with each other, so that the first connecting body 111 and the second connecting body 211 are limited to each other, and a non-rotating state is achieved; and when force is applied to the first connecting body 111, the first connecting body 111 has a pre-rotating force, so that the first protrusion 122 squeezes the second protrusion 221, and the deformation part 212 connected to the second protrusion 221 is squeezed and moves in the direction of the force, thereby driving the second protrusion 221 to move, so as to release the mutual engagement state of the first groove 121 and the second protrusion 221, and realize the first component 1 and the second component 2 is in the released limit state, so that the first component 1 and the second component 2 can rotate relative to each other; when the force on the first connecting body 211 is released, the deformation portion 212 is not squeezed by the outside and returns to its original state, so that the first groove 121 and the second protrusion 221 return to the mutually embedded state, so that the first component 1 and the second component 2 can be limited when they rotate relative to each other at a certain angle and maintain a certain angle; this method of switching the rotation and non-rotation states is achieved by releasing the limit by applying force deformation to achieve relative rotation and restoring the conflict limit without applying force, which is convenient to achieve and has a simple structure.

[0061] The deformation portion 212 includes a first through hole 2121 and a first connecting bar 2122 provided on the second connecting body 211;

[0062] Along the radial direction of the second connecting body 211, the first through holes 2121 and the first connecting bars 2122 are arranged in sequence;

[0063] The second protrusion 221 is disposed on the outer surface of the first connecting strip 2122 . One side of the first connecting strip 2122 conflicts with the first through hole 2121, and the other side of the first connecting strip 2122 is connected to the second protrusion 211; the first connecting strip 2122 is arc-shaped, so that the cross-section of the outer periphery of the first connecting body 211 is circular, and the cross-section of the radial direction of the first cavity 112 is circular; the setting of the first through hole 2111 enables the first connecting strip 2122 to have space for deformation; when the first protrusion 122 squeezes the second protrusion 221, the first connecting strip 2122 is squeezed and deformed. At this time, the area of the first through hole 2121 changes due to the squeezing, and the second protrusion 221 moves toward the setting direction of the first through hole 2121, thereby releasing the mutual fitting state of the first groove body 121 and the second protrusion 221, and realizing the release of the limit state of the first component 1 and the second component 2; after the force is released, the first connecting strip returns to its original state, thereby restoring the fitting state of the first groove body 121 and the second protrusion 221.

[0064] The deformable portion 212 is deformed by being squeezed to drive the second protrusion 221 , and when not squeezed, it returns to its original state to restore the second protrusion 221 to the state of being fitted with the first groove 121 .

[0065] There are one or more deformable portions 212 , and each deformable portion 212 is correspondingly provided with a second protrusion 221 .

[0066] The two deformable parts 212 are symmetrically provided, wherein each deformable part 212 is provided with a corresponding second protrusion 221. This provides a double force-bearing position between the first component 1 and the second component 2, thereby making the limiting state more stable and allowing the first component 1 and the second component 2 to stably maintain a certain angle.

[0067] The first engaging portions 12 are provided in one or more groups on the inner surface of the first cavity 112 in the circumferential direction.

[0068] Among them, multiple groups of the first interlocking parts 12 are partially and continuously arranged or have interval arrangements or are arranged in a surrounding and continuous manner. The technical solution is that the first interlocking parts 12 are arranged in a surrounding and continuous manner, so that the first protrusions 122 are arranged on both sides of the first groove body 121, and the number of the first protrusions 122 is the same as the number of the first groove body 121; so that there are multiple adjustable angles between the first component 1 and the second component 2. And when the second protrusion 221 and the first groove body 121 are in a mutually interlocking state, the first protrusions 122 arranged on both sides restrict the second protrusion 221, and the problem of the second component 2 rotating when it is not squeezed occurs;

[0069] The first cavity 112 is provided with a first contact block 1121 on its axial surface;

[0070] The second connecting body 211 is provided with a contact groove 2111 that can contact the first contact block 1121 to limit the relative rotation range of the first and second components 1 and 2. The contact groove 2111 is provided on the side of the second connecting body 211 close to the first contact block 1121. The relative rotation range of the first and second components 1 and 2 is determined by the length of the first contact block 1121 and the contact groove 2111. Therefore, during the use of the product, the rotation angle is limited to avoid rotation to an angle that may cause accidents, such as excessive rotation angle causing parts to collide, internal cables to be stretched beyond the set range, and other problems.

[0071] The interference groove 2111 is arranged along the circumferential direction of the second connecting body 211. The two ends of the interference groove 2111 in the circumferential direction conflict with the first interference block 1121. The stroke set by the present technical solution is a relative rotation of 180 degrees, so that under the premise of the initial state being 0 degrees during the application process, 90 degrees of forward rotation and 90 degrees of reverse rotation can be achieved. It has a large rotation angle. When used in household appliances such as hair dryers, it can realize forward and reverse rotation of the rotating part, so that it can rotate forward and backward relative to the handle during use, making the experience more comfortable. Under the interlocking action of the first protrusion and the first groove body, within the rotation range, it can be achieved within a certain range. The angle is limited, and a variety of rotation angles are optional, which improves the flexibility of use. The specific relative rotation angle can be adaptively adjusted as needed and is not limited here. In the present technical solution, the interference groove 2111 is connected to one of the first through holes 2121, and the depth of the interference groove 2111 set in the second connecting body 211 is less than or equal to half the thickness of the second connecting body 211 to a depth that can effectively interfere with the first interference block; avoid setting a deeper depth to affect the connection between the second groove body and the chimeric block set on the other side;

[0072] The household appliance handle joint structure further includes a connection module 3 that provides a fulcrum for the relative rotation of the first component 1 and the second component 2.

[0073] The connecting module 3 includes a connecting shaft 31 coaxially connected to the first and second components 1 and 2, allowing them to rotate relative to each other. The connecting shaft 31 extends through the first and second components 1 and 2, providing a fulcrum for relative rotation of the first and second components 1 and 2, thereby improving the stability of the rotation process. The connecting shaft 31 is configured to limit the rotation of the second component 2 relative to the connecting shaft 31, and to flexibly connect with the first component 1, allowing the first component 1 to rotate relative to the second component 2 and the connecting shaft 31.

[0074] The second connecting body 211 is provided with a second through hole 2112 connected to the connecting shaft 31 and limiting the circumferential rotation of the second connecting body 211 relative to the connecting shaft 31;

[0075] The first connecting body 111 is provided with a third through hole 1111 movably connected to the connecting shaft 31. The second through hole 2112 is provided at the center of the second connecting body 211; the connecting shaft 31, the first connecting body 111, and the second connecting body 211 are coaxially arranged, and the second connecting body 211 is synchronized with the connecting shaft 31. The first connecting body 111 can rotate relative to the second connecting body 211, thereby applying force to the first connecting body 111, thereby squeezing the second connecting body 211 and deforming it to achieve a rotatable effect;

[0076] The second through hole 2112 and the third through hole 1111 are coaxially arranged.

[0077] The connecting shaft 31 includes a first shaft body 311 and a second shaft body 312 connected to the second through hole 2112 and limiting the circumferential rotation of the second connecting body 211 relative to the connecting shaft 31;

[0078] The first shaft 311 is movably connected to the third through hole 1111;

[0079] The second shaft 312 is coaxially arranged with the first shaft 311. The coaxially arranged first shaft 311 and second shaft 312 form a connecting shaft 31 that passes through the second through hole 2112 and the third through hole 1111, thereby achieving the coaxial connection between the first connecting body 111 and the second connecting body 211. The second shaft 312 is connected to the second through hole 2112, restricting the second connecting body 211 from circumferential rotation relative to the connecting shaft 31, so that the second connecting body 211 and the connecting shaft 31 are in a synchronized state. The first shaft 311 is movably connected to the third through hole 1111, so that the first connecting body 111 can circumferentially rotate relative to the connecting shaft 31, forming a state in which the first connecting body 111 and the second connecting body 211 can perform relative rotation operation with the connecting shaft 31 as the support point.

[0080] Along the radial direction of the connecting shaft 31, the cross-section of the first shaft 311 is circular, and the cross-section of the third through hole 1111 is also circular. The first shaft 311 and the third through hole 1111 are movably connected, allowing the first connecting body 111 to rotate relative to the connecting shaft. The connecting shaft 31 also includes a contact platform 313 that contacts the first connecting body 111. The first connecting body 111 is provided with a contact plane 1112 that contacts the first contact platform 313. The edge of the contact plane 1112 is in contact with the third through hole 1111, thereby positioning the first connecting body.

[0081] Along the radial direction of the connecting shaft 31, the second shaft 312 defines a first flat surface 313 that limits the rotation of the second connecting body 211 relative to the connecting shaft 31. The second through hole 2112 defines a second flat surface 2113 that aligns with the first flat surface 313. The first flat surfaces 313 are symmetrically arranged in groups, with first curved surfaces 314 disposed between the groups of first flat surfaces 313. The second flat surfaces 2113 are symmetrically arranged in groups, with second curved surfaces 2114 disposed between the groups of second flat surfaces 2113. The surfaces of the first curved surfaces 314 and the second curved surfaces 2114 align with each other. The second component 2 is limited by the second shaft 312 to prevent it from circumferentially rotating relative to the connecting shaft 31, thereby achieving a state in which the first component 1 can rotate relative to the connecting shaft 31 and the second component 2 is synchronized with the connecting shaft 31, so that the first component 1 and the second component 2 rotate relative to each other under the drive of external force; the first plane 313 is fitted with the second plane 2113, and the rotation path of the second connecting body 211 is restricted, thereby limiting the rotation of the second connecting body 211 relative to the connecting shaft 31, so that the second connecting body 211 is synchronized with the connecting shaft 31, and during the process of applying force to the first connecting body 111, the first connecting body 111 can rotate relative to the second connecting body 211.

[0082] In an alternative embodiment of the cross-sectional shape of the second shaft body 312, the cross-sectional shape of the second shaft body 312 along its radial direction is one of polygonal, elliptical, and irregular, and the cross-sectional shape of the second through hole 2112 is adapted to the cross-sectional shape of the second shaft body. This allows the second shaft body 312 to engage with the second through hole 2112, thereby synchronizing the second connecting body 211 and the connecting shaft 31.

[0083] The second connecting body 211 is provided with a second groove 2115, and the second groove 2115 is provided in a radial direction of the second through hole 2112.

[0084] The connecting module 3 also includes an interlocking block 32 connected to the second groove 2115 to limit the circumferential rotation of the second connecting body 211 relative to the connecting shaft 31. The interlocking groove 2111 and the second groove 2115 are respectively arranged on both sides of the axial direction of the second connecting body 211, and the projections of the two intersect with each other. The second groove 2115 and the interlocking block 32 are interlocked with each other to prevent the second component 2 from rotating relative to the connecting shaft 31. The second groove 2115 is arranged toward the interlocking block. The edge of the second groove 2115 is abutted against the edge of the first through hole 2121, and the first through hole 2121 is arranged on both sides of the radial direction of the second groove 2115. The interlocking block 32 and the second groove 2115 limit the rotation of the second connecting body 211 relative to the connecting shaft 31. When the connecting shaft is restricted, the interlocking block 32 is provided to further restrict the rotation, thereby improving the stability of the relative rotation process between the first connecting body 111 and the second connecting body 211.

[0085] The connection module 3 further includes a first assembly 33 and a second assembly 34 that are assembled with each other;

[0086] The first assembly 33 is connected to one end of the connecting shaft 31 close to the first shaft body 311;

[0087] The second assembly 34 is connected to the interlocking block 32, and the second assembly 34 is provided with a third groove 341 which is interlocked with the second shaft 312. The shape of the third groove 341 is adapted to the shape of the second shaft 312. There is a space between the facing surfaces of the first assembly 33 and the second assembly 34, wherein after the first assembly 33 and the second assembly 34 are connected, a space with a "U"-shaped cross-section is formed between the two, which can accommodate the first component 1 and the rotating shell, or avoid interfering with the rotation process of the first component 1, the connecting frame, and the rotating shell; so that the connecting shaft 31 and the interlocking block 32 have support; by setting the connecting shaft 31 in a through state, wherein the connecting shaft 31 is sequentially provided with a first shaft 311 that can be movably connected and a second shaft 312 that can be limited, so as to cooperate with the first components 1, The second component 2 rotates relatively, and the end of the second shaft 312 is connected to the second assembly 34, so that the second assembly 34 is synchronized with the connecting shaft 31. The second assembly 34 is provided with a fitting block 32 that is fitted with the second groove 2115, so that the second connecting body 211 is further restricted, thereby being synchronized with the connecting shaft 31, so that the first assembly 33, the second assembly 34, the connecting shaft 31, the fitting block 32, and the second connecting body 211 are all in a synchronized state as a whole, and the first connecting body 111 can rotate relative to the whole. This structure occupies a smaller volume.

[0088] The third groove 341 is provided with a third plane 3411 that is aligned with the first plane 313. The third planes 3411 are symmetrically arranged in groups, and a third arc surface is provided between the groups of third planes. The third arc surface is aligned with the first arc surface. The end of the second shaft is embedded in the third groove, and the shapes of the two are adapted.

[0089] The first component 1 is covered with a rotating shell 4;

[0090] The first assembly 33 is provided with a fourth fitting surface 331 movably connected to the rotating housing 4;

[0091] The second assembly 34 is provided with a fifth fitting surface 342 that is movably connected to the rotating shell 4. Along the axial direction of the connecting shaft 31, the rotating shell 4 has openings on both sides thereof. The rotating shell 4 is fixedly connected to the first connecting body 111; the connecting shaft 31 passes through the rotating shell 4; the fourth fitting surface 331 is connected to the fifth fitting surface 342, and is movably connected to the bottom of the rotating shell 4. When force is applied to the first component 1, the rotating shell 4 is driven to rotate, thereby rotating relative to the first assembly 33 and the second assembly 34. The fourth fitting surface 331 and the fifth fitting surface 342 are both movably connected to the rotating shell 4, so that the rotating shell 4 has support when rotating, and the rotation process is more stable.

[0092] The cross-section of the bottom of the rotating housing 4 is arc-shaped;

[0093] The cross-sectional shapes of the fourth and fifth mating surfaces 331 and 342 are both arcuate. Furthermore, the shapes formed by the fourth and fifth mating surfaces 331 and 342 match the bottom of the rotating housing 4, facilitating the rotation of the rotating housing 4. The arcuate surfaces better match the rotation process, facilitating the rotation process.

[0094] A first convex ring 41 and a second convex ring 42 are respectively provided on both sides of the rotating housing 4;

[0095] The first assembly 33 is provided with a first sliding groove 332 movably connected to the first protruding ring 41;

[0096] The second assembly 34 defines a second sliding groove 343 movably connected to the second protruding ring 42 .

[0097] The first and second cams 331 and 332 are respectively connected to each other on both sides of the first and second cams 332, 333 and 334, so that the first and second cams 331 and 332 can be connected to each other at the same time.

[0098] The second protruding ring 42 is provided with a third protruding block 43 in its axial direction;

[0099] The second sliding groove 343 is provided with a third sliding groove 344 in the axial direction thereof;

[0100] The third protrusion 43 is engaged with the third slide groove 344. Specifically, the depth of the third slide groove 344 is deeper than that of the second slide groove 343; wherein the third slide groove 344 is provided with a certain length in the circumferential direction to cooperate with the rotation stroke of the rotating shell 4. The length of the third protrusion 43 is only sufficient to be engaged with the third slide groove 344 and cooperate to complete the stroke limit; the stroke limit matches the stroke limit of the interference groove 2111, so that the first component 1 has multiple stroke limit positions during the rotation process, thereby limiting the rotatable angle during the application of the product, thereby avoiding rotation to an angle where an accident may occur, such as collision of components due to excessive rotation angle, internal cables being stretched out of the set range, and other problems;

[0101] A hair dryer capable of bidirectional rotation comprises a handle 5 , wherein the handle 5 comprises a handle body 51 , and the connection module 3 is arranged above the handle body 51 .

[0102] The handle 5 further includes an outer shell 52 sleeved on the handle body 51, a first fixing member 53 and a second fixing member 54 that abut against and fix the outer shell 51. The first fixing member 53 and the second fixing member 54 abut against the outer shell 52, thereby preventing the outer shell 51 from moving in the axial direction and fixing the outer shell 51.

[0103] The first fixing member 53 is provided at the upper end of the handle body 51, and the second fixing member 54 is provided at the lower end of the handle body 51. The two axial sides of the outer shell 52 respectively conflict with the first fixing member 53 and the second fixing member 54. The first fixing member 53 and the second fixing member 54 provided at the upper and lower ends of the handle body 51 respectively conflict with the two ends of the outer shell 51, thereby fixing the outer shell 51. The two ends of the outer shell are respectively limited by the first fixing member and the second fixing member. During the installation process, the outer shell is sleeved outside the handle body, and the two ends of the handle body are separated by the first fixing member and the second fixing member, thereby completing the limitation of the outer shell. This assembly method is convenient and easy to operate.

[0104] The first fixing member 53 includes a first fixing member body 531 and a first buckle 532 fixedly disposed on the first fixing member body 531;

[0105] The connecting module 3 is provided with a first buckle hole 35 which is buckled and connected to the first buckle 532;

[0106] The lower end surface of the first fixing member body 531 contacts the upper end surface of the outer shell 52. Specifically, the first snap holes 35 are provided on the outer surfaces of the first assembly 33 and the second assembly 34. The snap-fit connection of the first fixing member 53 facilitates installation. The lower end surface of the first fixing member body 531 contacts the upper end surface of the outer shell 52, thereby limiting the position of the outer shell 52.

[0107] The second fixing member 54 includes a second fixing member body 541 connected to an end of the handle body 51 away from the connecting module 3;

[0108] The outer shell 52 is provided with a first boss 521 on its interior. Two sides of the first boss 521 respectively contact the handle body 511 and the second fixing body 541. The second fixing body 541 is coaxially arranged with the handle body 51 and is connected via screws. This contacts the first boss 521, which in turn contacts the first fixing body 531, thereby securing the outer shell 52.

[0109] The second fixing member 54 further includes an end cover 542 connected to the second fixing member body 541. The end cover 542 is provided with a plurality of ventilation holes 543;

[0110] The second fixing member body 541 is provided with one or more second buckles 544;

[0111] The end cover 542 is provided with a second buckle hole 545 which is buckled with the second buckle 544 .

[0112] The side surface of the end cover 542 is in conflict with the inner surface of the outer shell 52;

[0113] The lower end of the end cover 542 is flush with the lower end of the outer shell 52 .

[0114] The hair dryer further comprises an air supply assembly 6, which is connected to the movable end of the joint structure of the handle of the household appliance;

[0115] The air supply assembly 6 is connected to the first component 1 .

[0116] The air supply assembly 6 is provided with a connection frame 61;

[0117] The outer surface of the first component 1 is in contact with the inner surface of the connecting frame 61, and the outer surface of the connecting frame 61 is in contact with the inner surface of the rotating shell 4. Specifically, the outer surface of the connecting portion of the upper end of the first component 1 is in contact with the inner surface of the connecting frame 61, forming a state in which the connecting frame 61 is sleeved on the outer portion of the upper end of the first component 1; the inner surface of the upper end of the rotating shell 4 is in contact with the outer surface of the connecting frame 61, forming a state in which the rotating shell 4 is partially sleeved on the outer surface of the connecting frame 61. The components have multiple contact surfaces and are sleeved on each other, thereby improving the stability of the rotation process or the resistance limit. The first component 1, the connecting frame 61, and the rotating shell 4 are connected by screws to form a synchronous rotation state. Correspondingly, the first component 1, the connecting frame 61, and the rotating shell 4 are all provided with screw holes 63 that can be connected by screws. The first component 1 and the connecting frame 61 are also connected to each other by a third buckle 113 and a third slot 62 provided on the first connector body 111.

[0118] Along the axial direction of the first member 1 , the projection of the first contact block 1121 intersects with the projection of one of the first through holes 2121 ;

[0119] The cross-section of the first through hole 2121 is fan-shaped, wherein there is a certain distance between the side of the first through hole 2121 away from the first connecting strip 2122 and the center of the second connecting body 211, so that the second connecting member 21 has space for the connecting shaft 31 to pass through, which is convenient for fixing the second component 2 and allows the first component 1 to rotate a certain distance relative to the second component 2.

[0120] The surface of the first groove body 121 and the surface of the first protrusion 122 are both arc-shaped, and the surface of the second protrusion 122 is arc-shaped and matches the shape of the surface of the first groove body 121. The surface of the first groove body 121 and the surface of the first protrusion 122 are continuously arranged to form a wave shape.

[0121] The center O of the first cavity 112 is taken as the origin; the radius of the first groove 121 is OA; the radius of the position where the first protrusion 122 reaches its maximum height toward the center O of the first cavity 112 is OB; the straight-line distance between the position where the second protrusion 122 reaches its maximum height away from the center O of the first cavity 112 and the center O of the first cavity 112 is OC, satisfying OB<OC<OA; wherein the second connecting body 211 and the first cavity 112 are coaxially arranged and have the same center O;

[0122] The joint structure is specifically used in household appliance handles, such as hair dryer handles and other components that need to rotate.

[0123] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

[0125] The above is a detailed description of an embodiment of a bidirectionally rotatable hair dryer provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in several ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A hair dryer capable of bidirectional rotation, comprising a handle (5) and an air supply assembly (6), characterized in that: The handle (5) comprises a handle body (51); the air supply assembly (6) is connected to the movable end of the joint structure of the handle for the household appliance; The household appliance handle joint structure comprises a first component (1), a second component (2) coaxially arranged and interlocked to limit or deform to release the limit for relative rotation, and a connecting module (3) providing a fulcrum for the relative rotation of the first component (1) and the second component (2); The air supply assembly (6) is connected to the first component (1); the connection module (3) is arranged above the handle body (51).

2. The hair dryer according to claim 1, characterized in that The connecting module (3) comprises a connecting shaft (31) coaxially connected to the first component (1) and the second component (2) so that the two components can rotate relative to each other.

3. The hair dryer according to claim 1, wherein The handle (5) further comprises an outer shell (52) sleeved on the outside of the handle body (51), a first fixing member (53) and a second fixing member (54) that abut against and fix the outer shell (51).

4. The hair dryer according to claim 3, characterized in that The first fixing member (53) is arranged at the upper end of the handle body (51), and the second fixing member (54) is arranged at the lower end of the handle body (51). The two axial sides of the outer shell (52) are respectively in conflict with the first fixing member (53) and the second fixing member (54).

5. The hair dryer according to claim 4, characterized in that The first fixing member (53) comprises a first fixing member body (531) and a first buckle (532) fixedly arranged on the first fixing member body (531); The connecting module (3) is provided with a first buckle hole (35) which is buckled and connected to the first buckle (532); The lower end surface of the first fixing member body (531) abuts against the upper end surface of the outer shell (52).

6. The hair dryer according to claim 4, characterized in that The second fixing member (54) comprises a second fixing member body (541) connected to an end of the handle body (51) away from the connecting module (3); A first boss (521) is provided inside the outer shell (52), and two sides of the first boss (521) respectively contact the handle body (511) and the second fixing member body (541).

7. The hair dryer according to claim 2, characterized in that The first component (1) includes a first connecting member (11); The second component (2) includes a second connecting member (21) arranged coaxially with the first connecting member (11); The first connecting member (11) comprises a first connecting body (111), and a first cavity (112) disposed in the first connecting body (111) and accommodating the second connecting member (21); The second connecting member (21) comprises a second connecting body (211) coaxially arranged in the first cavity (112).

8. The hair dryer according to claim 7, characterized in that The second connecting body (211) is provided with a second through hole (2112) connected to the connecting shaft (31) and limiting the circumferential rotation of the second connecting body (211) relative to the connecting shaft (31); The first connecting body (111) is provided with a third through hole (1111) movably connected to the connecting shaft (31).

9. The hair dryer according to claim 8, characterized in that The connecting shaft (31) comprises a first shaft body (311) and a second shaft body (312) connected to the second through hole (2112) and limiting the circumferential rotation of the second connecting body (211) relative to the connecting shaft (31); The first shaft (311) is movably connected to the third through hole (1111); The second shaft (312) is coaxially arranged with the first shaft (311).

10. The hair dryer according to claim 1, wherein The air supply component (6) is provided with a connection frame (61); The outer surface of the first component (1) fits in contact with the inner surface of the connecting frame (61), and the outer surface of the connecting frame (61) fits in contact with the inner surface of the rotating shell (4).

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