Connecting structure of folding electric hair drier

Abstract

The utility model discloses a connecting structure of a folding electric hair drier, which comprises a handle body and an electric hair drier body, a hinge part I is arranged on the handle body, a hinge part II is arranged on the electric hair drier body, and the hinge part I and the hinge part II are rotatably connected; a rhythm piece is fixedly arranged on one side of the second hinge part, a plurality of cambered surface clamping grooves are formed in one side of the rhythm piece in an annular array mode, the cambered surface clamping grooves are used in cooperation with a plurality of elastic arms, the elastic arms are fixedly arranged, a plurality of elastic pieces are fixedly arranged in the first hinge part, and the elastic pieces abut against the sides, away from the rhythm piece, of the elastic arms. And the elastic sheet can continuously apply a reset force to the elastic arm in a manner of propping against the elastic arm, so that the elastic arm is prevented from being loosened due to fatigue in a short time, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair care tools, in particular to a connection structure of a folding hair dryer. Background Art

[0002] A hair dryer is a tool used daily for hair drying and care. In order to save space and improve portability, a foldable hair dryer has appeared on the market, such as the public technical document "CN108813896A, a foldable hair dryer". Specifically, a rotating block in a connecting portion cooperates with a rotating shaft in a handle so that the handle can be easily rotated and folded relative to the shell. This is the most conventional and simplest design. It can maintain smooth rotation during initial use, and the damping design can keep the handle and the hair dryer body relatively stationary in the absence of external force, thereby maintaining normal use. However, after frequent use, the rotating parts will age, resulting in damping failure, that is, the hair dryer body cannot maintain relative stationary with the handle body in the absence of external force, and cannot maintain normal use. The function of this hair dryer is normal, but in such a case, users generally discard the hair dryer, thereby shortening the service life of the hair dryer. Utility Model Content

[0003] The purpose of the present invention is to provide a connection structure of a foldable hair dryer to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A connection structure of a foldable hair dryer, comprising a handle body and a hair dryer body, wherein the handle body is provided with a first hinge part, and the hair dryer body is provided with a second hinge part, wherein the first hinge part and the second hinge part are rotatably connected;

[0006] A rhythm piece is fixedly provided on one side of the hinge part 2, and a plurality of arc-shaped slots are provided in a circular array on one side of the rhythm piece. The arc-shaped slots are used in conjunction with a plurality of elastic arms, and the elastic arms are fixedly arranged. A plurality of elastic pieces are fixedly provided in the hinge part 1, and the elastic pieces are in conflict with the side of the elastic wall away from the rhythm piece.

[0007] According to a further technical solution, there are four arc-surface slots distributed at 90 degrees, and there are four elastic arms distributed in a cross shape, and the ends of the four elastic arms are respectively engaged with the four arc-surface slots.

[0008] A further technical solution is that the hinge part 1 is designed to be "concave", and a rotating shaft that penetrates into the hinge part 2 is fixed at the groove, and a plurality of clips are provided at one end of the rotating shaft, and the clips are clipped with the fixed part 1, and one end of a plurality of elastic arms is connected to the fixed part 1.

[0009] A further technical solution is that a fixing part 2 is provided on the outside of the fixing part 1, the fixing part 2 is clamped with the card strip, and one end of a plurality of spring pieces is connected to the fixing part 2, and the side surface of the fixing part 2 is in contact with the inner side of the hinged part 1.

[0010] According to a further technical solution, a limiting groove for accommodating the spring piece and the spring arm is provided on the inner side of the hinge part 1.

[0011] A further technical solution is that a channel for the rotating shaft to pass through is provided in the middle of the second hinge part, and a mounting position for placing the rhythm piece is provided on one side of the second hinge part. A plurality of card holes are provided at the end face of the mounting position, and the arc-shaped card slot is designed to be concave outside and convex inside, and the convex surface is snapped into the card hole.

[0012] Beneficial effects of the utility model:

[0013] When it is necessary to open or fold, the handle body and the hair dryer body are moved away from each other with the rotation structure formed by the first hinge part and the second hinge part as the center. At this time, the multiple elastic arms and the rhythm piece have a tendency to move in a dislocated manner with each other. When the external force reaches a certain value, the end of the elastic arm will disengage from the arc-surface slot and slide on the surface of the rhythm piece. After rotating to a certain angle, the end of the elastic arm will be locked into another arc-surface slot to complete the opening or closing operation.

[0014] In addition, the shrapnel can continuously apply a reset force to the spring arm by resisting the spring arm, avoiding fatigue and loosening of the spring arm in a short period of time, thereby extending its service life.

[0015] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : A three-dimensional structural diagram of the utility model.

[0017] Figure 2 : A cross-sectional structural diagram of hinged portion 1 and hinged portion 2 of the present invention.

[0018] Figure 3 : Disassembly diagram of hinge part 1 and hinge part 2 of the present invention.

[0019] Figure 4 : The utility model of the spring piece, spring arm, rhythm piece and hinge part two structural diagrams.

[0020] Figure markings: 1-handle body, 2-hair dryer body, 31-hinge part 1, 32-hinge part 2, 331-rhythm piece, 332-arc slot, 333-convex surface, 341-elastic arm, 342-fixing part 1, 351-elastic piece, 352-fixing part 2, 361-rotating shaft, 362-card strip, 37-limiting slot, 381-channel, 382-installation position, 383-card hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] Please refer to Figure 1-4 ;

[0023] The connection structure described in the present invention is applied to a foldable hair dryer to extend its service life. Specifically, it includes a handle body 1 and a hair dryer body 2. The handle body 1 is provided with a hinge part 1 31, and the hair dryer body 2 is provided with a hinge part 2 32. The hair dryer body 2 and the handle body 1 are folded by rotating the hinge part 1 31 and the hinge part 2 32. In this embodiment, a segmented folding method is adopted, which allows users to choose the tilt angle to meet different usage scenarios. In a specific implementation method, a rhythm piece 331 is fixed on one side of the hinge part 2 32, and a plurality of arc-shaped card grooves 332 are provided in a ring array on one side of the rhythm piece 331. The arc-shaped card grooves 332 are used in conjunction with a plurality of elastic arms 341. The elastic arms 341 are fixedly arranged. In this embodiment, the elastic arms 341 can be fixed in any manner, such as being fixed on the hinge part 1 31, or fixed on the rotating shaft 361, etc., and are not limited here, as long as they are kept fixed. In addition, the end of the elastic arm 341 is provided with a card point that is engaged with the arc-shaped card groove 332.

[0024] In the initial state, the ends of the multiple elastic arms 341 are engaged with the arc-surface slots 332. In this engaged state, the handle body 1 and the hair dryer body 2 can be kept stationary in the absence of external force. When it is necessary to open or fold, the handle body 1 and the hair dryer body 2 are moved away from each other around the rotating structure formed by the first hinge part 31 and the second hinge part 32. At this time, the multiple elastic arms 341 and the rhythm piece 331 have a tendency to move in a dislocated manner with respect to each other. When the external force reaches a certain value, the ends of the elastic arms 341 will disengage from the arc-surface slots 332 and slide on the surface of the rhythm piece 331. After rotating to a certain angle, the ends of the elastic arms 341 will be engaged in another arc-surface slot 332 to complete the opening or closing operation.

[0025] In this embodiment, there are several arc-surface slots 332, and multi-angle adjustment can be achieved according to the above method to meet the customer's different angle usage requirements. Of course, long-term use of the elastic arm 341 will also cause fatigue, resulting in loosening of the card connection. In order to avoid failure, in this embodiment, a number of elastic pieces 351 are fixed in the hinge part 31. The elastic piece 351 conflicts with the side of the elastic wall away from the rhythm piece 331. The elastic piece 351 is made of metal material and has a stronger anti-fatigue effect. Since the rhythm piece 331 is made of plastic material, if the elastic arm 341 is made of metal material, it is easy to scratch and damage the rhythm piece when friction occurs. For this reason, the elastic arm 341 is also made of plastic material. For this reason, the elastic piece 351 uses a method of conflicting with the elastic arm 341 to continuously apply a reset force to it, thereby avoiding fatigue and loosening of the elastic arm 341 in a short period of time, thereby extending its service life.

[0026] In the present invention, there are four arc-surface slots 332 distributed at 90°, and there are four elastic arms 341 distributed in a "cross" shape. The ends of the four elastic arms 341 are respectively engaged with the four arc-surface slots 332, that is, the ends of the several elastic arms 341 are always kept engaged with the four arc-surface slots 332, that is, four fixed points are always formed, which can disperse the borne force and make the state maintained by the handle body 1 and the hair dryer body 2 more stable; if fine angle adjustment is required, more arc-surface slots 332 can be provided with reference to the above embodiment, and preferably the number of elastic arms 341 is the same as the number of arc-surface slots 332.

[0027] In one embodiment, the hinge part 31 is of a "concave" design, and a rotating shaft 361 that penetrates into the hinge part 2 32 is fixed at the groove, and a plurality of clamping strips 362 are provided at one end of the rotating shaft 361. The rotating shaft 361 is kept stationary relative to the hinge part 1 31, and one end of the plurality of elastic arms 341 is connected to the fixing part 1 342. The plurality of elastic arms 341 are formed into a whole through the fixing part 1 342, and the clamping strip 362 is clamped with the fixing part 1 342, so that the plurality of elastic arms 341 remain fixed to the handle body 1.

[0028] In addition, a second fixing portion 352 is provided on the outer side of the first fixing portion 342, and one end of several spring pieces 351 is connected to the second fixing portion 352, so that the several spring pieces 351 form a whole through the second fixing portion 352, which can better distribute the force and delay the occurrence of metal fatigue. The side surface of the second fixing portion 352 contacts the inner side of the hinged portion 1 31, and the second fixing portion 352 is clamped with the clamping strip 362, which can keep the relative positions of the first fixing portion 342 and the second fixing portion 352 fixed, and keep the spring piece 351 in contact with the elastic arm 341.

[0029] A limiting groove 37 is provided on the inner side of the hinge part 31 for accommodating the spring piece 351 and the spring arm 341, further limiting the position of the spring arm 341 and the spring piece 351 to avoid rotation and reducing the pressure of the clamping strip 362 in the rotating shaft 361.

[0030] In the embodiment of the present invention, a channel 381 for the rotation shaft 361 to pass through is provided in the middle of the hinge part 32, and a mounting position 382 for placing the rhythm piece 331 is provided on one side of the hinge part 32, and a plurality of card holes 383 are provided at the end face of the mounting position 382. The arc-surface card groove 332 is designed to be concave outside and convex inside, and the convex surface 333 is snapped into the card hole 383; since the rhythm piece needs to undergo a friction process with the elastic arm 341 during each rotation, it needs to be made of wear-resistant material, and the hinge part 32 is exposed to the outside and can be seen by the user, so it needs to be made of more beautiful material. Therefore, one-time injection molding cannot meet the requirements, and the use of split parts can meet the production requirements, and there will not be too much difficulty in the assembly process.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A connection structure for a foldable hair dryer, comprising a handle body (1) and a hair dryer body (2), wherein the handle body (1) is provided with a first hinge portion (31), and the hair dryer body (2) is provided with a second hinge portion (32), wherein the first hinge portion (31) and the second hinge portion (32) are rotatably connected, and characterized in that: A rhythm piece (331) is fixedly provided on one side of the hinge part 2 (32), and a plurality of arc surface slots (332) are provided in a circular array on one side of the rhythm piece (331). The arc surface slots (332) are used in conjunction with a plurality of elastic arms (341), and the elastic arms (341) are fixedly arranged. A plurality of elastic pieces (351) are fixedly provided in the hinge part 1 (31), and the elastic pieces (351) are in contact with the side of the elastic wall away from the rhythm piece (331).

2. The connection structure of a folding hair dryer according to claim 1, characterized in that: The arc surface slots (332) are four in number and distributed at 90 degrees. The elastic arms (341) are four and distributed in a "cross" shape. The ends of the four elastic arms (341) are respectively engaged with the four arc surface slots (332).

3. The connection structure of a folding hair dryer according to claim 1, characterized in that: The hinge part 1 (31) is designed as a "concave" shape, and a rotating shaft (361) is fixed at the groove and penetrates into the hinge part 2 (32). One end of the rotating shaft (361) is provided with a plurality of clamping strips (362), and the clamping strips (362) are clamped with the fixed part 1 (342). One end of the plurality of elastic arms (341) is connected to the fixed part 1 (342).

4. The connection structure of a folding hair dryer according to claim 3, characterized in that: A second fixing part (352) is provided on the outer side of the first fixing part (342), the second fixing part (352) is engaged with the clamping strip (362), and one end of a plurality of spring pieces (351) is connected to the second fixing part (352), and the side surface of the second fixing part (352) contacts the inner side of the first hinge part (31).

5. The connection structure of a folding hair dryer according to claim 4, characterized in that: A limiting groove (37) for accommodating the elastic piece (351) and the elastic arm (341) is provided on the inner side of the hinge part 1 (31).

6. The connection structure of a folding hair dryer according to claim 5, characterized in that: The middle part of the hinge part 2 (32) is provided with a channel (381) for the rotation shaft (361) to pass through, and a mounting position (382) for placing the rhythm piece (331) is provided on one side of the hinge part 2 (32). A plurality of clamping holes (383) are provided at the end surface of the mounting position (382). The arc surface clamping groove (332) is designed to be concave outside and convex inside, and the convex surface (333) is clamped into the clamping hole (383).

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