Multi-speed-change roller structure of handheld appliance

Abstract

The utility model discloses a multistage speed change roller structure of a hand-held appliance, which comprises a hand-held appliance main body and a control assembly, and the hand-held appliance main body comprises an air duct shell; the control assembly is installed on the handheld device body and comprises a roller used for adjusting gears and an encoder located in the air duct shell, the roller is installed outside the outer side wall of the air duct shell in a left-right rotating mode and connected with the encoder, and a rotating shaft of the roller is parallel to the front-back direction of the air duct shell; the roller is directly located outside the air duct shell, and the axis of the roller is parallel to the front-back direction of the handheld appliance, so that the encoder can be located in the air duct shell, the roller and the encoder can be designed separately, a sinking groove in the prior art can be omitted, the external structure of the air duct shell is simple, and the cost is low. Only the roller needs to be installed outside the air duct shell without an additional fixing structure, the air duct shell is easier to manufacture, and a sinking groove does not need to be designed.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a multi-stage variable speed roller structure for a handheld appliance. Background Art

[0002] Existing hair dryers include a handheld appliance and an electronic control component. For example, in a Chinese patent: a stepless drive bladeless high-speed hair dryer (CN117016939A), the electronic control component is equipped with a roller and an encoder connected to the roller, and the gear is adjusted by the forward or backward rotation of the roller. However, this design causes the roller to occupy a relatively large space in the front-rear direction of the handheld appliance. To solve this problem, a sunken groove is provided on the outer side wall of the handheld appliance in the prior art, and the sunken groove sinks inward in the direction of the air duct, so that a part of the roller and the encoder can be embedded therein, reducing the space occupied by the roller in the front-rear direction. However, since both the roller and the encoder are provided in the sunken groove and fixed by a cover, the structure outside the air duct is complicated. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a multi-stage variable speed roller structure for a handheld appliance.

[0004] According to a multi-stage variable speed roller structure for a handheld appliance according to an embodiment of the first aspect of the utility model, it includes a handheld appliance main body and a control component. The handheld appliance main body includes an air duct housing; the control component is installed on the handheld appliance main body, and the control component includes a roller for adjusting gears and an encoder located inside the air duct housing. The roller is rotatably installed outside the outer side wall of the air duct housing and connected to the encoder, and the rotation axis of the roller is parallel to the front-rear direction of the air duct housing.

[0005] According to the multi-stage variable speed roller structure for a handheld appliance according to an embodiment of the utility model, it has at least the following technical effects: the roller is directly located outside the air duct housing and its axis is parallel to the front-rear direction of the handheld appliance, so that the encoder can be located inside the air duct housing. Furthermore, the roller and the encoder can be designed separately, thus eliminating the sunken groove in the prior art, simplifying the external structure of the air duct housing, only requiring the roller to be installed outside the air duct housing without additional fixing structures, and making the manufacturing of the air duct housing simpler without the need to design a sunken groove.

[0006] According to some embodiments of the utility model, the roller is installed on the top of the air duct housing.

[0007] According to some embodiments of the utility model, the control component further includes a decoder shaft, the decoder shaft is installed on the encoder, and the roller is rotatably installed outside the air duct housing through the decoder shaft.

[0008] According to some embodiments of the present utility model, the encoder and the decoder shaft are detachably mounted on the air duct housing, and the roller is detachably mounted on the decoder shaft.

[0009] According to some embodiments of the present utility model, the control assembly further includes a base. There is a slot with an upper opening inside the air duct housing. The base is movably mounted up and down in the slot. There is a communication hole on the outer side wall of the air duct housing that communicates with the slot. The encoder is placed inside the base. One end of the decoder shaft can be inserted into the base through the communication hole and connected to the encoder, and the roller is connected to the other end of the decoder shaft.

[0010] According to some embodiments of the present utility model, the outer side wall of the air duct housing has a convex platform protruding outward. The roller is mounted on the convex platform, and the edge of the convex platform has a recess for facilitating the pulling out of the roller.

[0011] According to some embodiments of the present utility model, a brushless motor is installed inside the air duct housing, and the roller is located above the brushless motor.

[0012] According to some embodiments of the present utility model, the axis of the roller is perpendicular to the axis of the air duct housing.

[0013] According to some embodiments of the present utility model, the roller is provided with a plurality of recessed portions spaced along the circumferential direction of the roller.

[0014] According to some embodiments of the present utility model, the handheld appliance body further includes a housing. The housing is sleeved outside the air duct housing, and a part of the roller is located inside the housing.

[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic structural diagram of the roller mounted on the air duct housing;

[0018] Figure 2 is a schematic structural diagram of the roller;

[0019] Figure 3 is a cross-sectional view of the handheld appliance;

[0020] Figure 4 is an exploded view of the control assembly and the air duct housing;

[0021] Figure 5 It is a schematic structural diagram of an air duct housing in a certain direction;

[0022] Figure 6 It is a schematic structural diagram of the air duct housing in another direction;

[0023] Figure 7 It is a schematic structural diagram of a hand-held appliance.

[0024] Reference numerals: hand-held appliance main body 100, outer side wall 101, air duct housing 110, slot 111, communication hole 112, boss 113, recess 1131, brushless motor 114, housing 120, control assembly 200, roller 210, first end face 211, second end face 212, rotating toroidal surface 213, recessed portion 214, encoder 220, decoder shaft 230, base 240. Detailed implementation manners

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0029] Refer to Figure 1 、 2, as shown in FIGS. 3, the multi-stage variable speed roller structure of the handheld appliance according to the embodiment of the present utility model includes a handheld appliance main body 100 and a control assembly 200. The handheld appliance main body 100 includes an air duct housing 110; the control assembly 200 is installed on the handheld appliance main body 100. The control assembly 200 includes a roller 210 for adjusting the air speed gear of the blower or the temperature gear of the electric heating element and an encoder 220 located in the air duct housing 110. The roller 210 is rotatably installed outside the outer side wall 101 of the air duct housing 110 and is connected to the encoder 220. The roller 210 includes a first end face 211 and a second end face 212 arranged at intervals in the front and rear directions and a rotating circular ring surface 213 arranged between the first end face 211 and the second end face 212. The second end face 212 is located in front of the air duct housing 110. A part of the second end face 212 and the outer side wall 101 of the air duct housing 110 face each other in the front and rear directions of the air duct housing 110, that is, the rotation axis of the roller 210 is parallel to the front and rear directions of the air duct housing 110.

[0030] The roller 210 is directly located outside the air duct housing 110 and its axis is parallel to the front and rear directions of the handheld appliance, so that the encoder 220 can be located inside the air duct housing 110. Furthermore, the roller 210 and the encoder 220 can be designed separately, so that the sunk groove in the prior art can be cancelled, the external structure of the air duct housing is simple, only the roller needs to be installed outside the air duct housing without additional fixing structure, and the manufacturing of the air duct housing is simpler without designing a sunk groove.

[0031] During operation, the roller 210 is rotated left or right to adjust the air speed of the blower or the temperature of the electric heating element.

[0032] Specifically, the roller 210 can be arranged on the air duct housing 110 at any position in the circumferential direction of the air duct housing 110. For example, at 90°, 180° or 270° in the circumferential direction of the air duct housing 110; and the number of the rollers 210 can also be set according to actual needs. For example, when multiple rollers 210 are provided, the multiple rollers 210 are arranged at intervals in the circumferential direction of the air duct housing 110 on the air duct housing 110, or the multiple rollers 210 are arranged at intervals in the up and down directions of the air duct housing 110.

[0033] In some embodiments of the present utility model, as Figure 1 、 3 shown, the roller 210 is installed on the top of the air duct housing 110 so that when the user holds the handheld appliance, it is better to rotate the roller 210 and it is easier to adjust the air speed of the blower or the temperature of the electric heating element.

[0034] In some embodiments of the present utility model, as Figure 3 、 4As shown, the control component 200 further includes a decoder shaft 230. The decoder shaft 230 is installed on the encoder 220. The roller 210 is rotatably installed on the outer side of the air duct housing 110 through the decoder shaft 230. When the roller 210 rotates, the encoder 220 feeds back a signal to the control board, and the control board adjusts the wind speed of the fan or the temperature of the electric heating element according to the signal.

[0035] In a further embodiment of the present utility model, the encoder 220 and the decoder shaft 230 are detachably installed on the air duct housing 110, and the roller 210 is detachably installed on the decoder shaft 230, which is convenient for assembling the encoder 220, the decoder shaft 230 and the roller 210.

[0036] In a further embodiment of the present utility model, as Figure 4 , 5 shown, the control component 200 further includes a base 240. The air duct housing 110 has a slot 111 with an upper opening. The base 240 is vertically movably installed in the slot 111 so that the base 240 can be inserted into the slot 111 in the vertical direction or removed from the slot 111. As Figure 4 shown, a communication hole 112 is provided on the outer side wall 101 of the air duct housing 110 corresponding to the position of the slot 111. The communication hole 112 is respectively communicated with the slot 111 and the outside of the air duct housing 110. The encoder 220 is placed in the base 240. As Figure 3 , 5 , 6 shown, one end of the decoder shaft 230 can be inserted into the base 240 through the communication hole 112 and connected to the encoder 220, and the roller 210 is connected to the other end of the decoder shaft 230. With the above structure of the control component 200, it is convenient for installation and disassembly;

[0037] During installation, the encoder 220 is placed in the base 240, the base 240 is inserted downward into the slot 111, one end of the decoder shaft 230 passes through the communication hole 112 and is connected to the encoder 220, and the roller 210 is connected to the other end of the decoder.

[0038] In some embodiments of the present utility model, as Figure 1 shown, the outer side wall 101 of the air duct housing 110 has a convex platform 113 protruding outward. The roller 210 is installed on the convex platform 113. The edge of the convex platform 113 has a recess 1131 for facilitating the removal of the roller 210. By providing the recess 1131 at the edge of the convex platform 113, there is a space between the roller 210 and the convex platform 113, and the user can insert his fingernail or an auxiliary tool into the space, and then the user can remove the roller 210.

[0039] In some embodiments of the present utility model, as Figure 3As shown, a brushless motor 114 is installed inside the air duct housing 110, and the roller 210 is located above the brushless motor 114, facilitating the user to adjust the gears.

[0040] In some embodiments of the present invention, the axis of the roller 210 is perpendicular to the axis of the air duct housing 110, facilitating the user to adjust the gears.

[0041] In some embodiments of the present invention, as Figure 4 shown, a plurality of recessed portions 214 are provided on the first end face 211 at intervals along the circumferential direction of the roller 210, facilitating the rotation of the roller 210.

[0042] In some embodiments of the present invention, as Figure 7 shown, the hand-held appliance main body 100 further includes a housing 120. The housing 120 is sleeved outside the air duct housing 110, and a part of the roller 210 is located inside the housing 120, making the appearance of the hand-held appliance more beautiful and better protecting the roller 210.

[0043] In some embodiments of the present invention, a hair dryer air duct part or a dust suction head of a hand-held vacuum cleaner is installed on the top of the housing 120.

[0044] In the description of this specification, the description with reference to terms such as "some embodiments" or "it is conceivable that" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation 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 a suitable manner in any one or more embodiments or examples.

[0045] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-stage speed-changing roller structure for a handheld device, characterized in that: include: The handheld device body includes an air duct housing; A control component is installed on the handheld device body, and the control component includes a roller for adjusting the gear position and an encoder located in the air duct shell. The roller is rotatably placed outside the outer wall of the air duct shell and connected to the encoder, and the rotation axis of the roller is parallel to the front-to-back direction of the air duct shell.

2. The multi-stage speed-changing roller structure of the handheld device according to claim 1, characterized in that: The roller is installed on the top of the air duct shell.

3. The multi-stage speed-changing roller structure of the handheld device according to claim 1, characterized in that: The control assembly further comprises a decoder shaft, wherein the decoder shaft is mounted on the encoder, and the roller is rotatably mounted on the outer side of the air duct housing via the decoder shaft.

4. The multi-stage speed-changing roller structure of the handheld device according to claim 3, characterized in that: The encoder and the decoder shaft are detachably mounted on the air duct housing, and the roller is detachably mounted on the decoder shaft.

5. The multi-stage speed-changing roller structure of the handheld device according to claim 4, characterized in that: The control component also includes a base, the air duct shell has a slot with an upper opening, the base can be moved up and down and installed in the slot, the outer wall of the air duct shell has a connecting hole connected to the slot, the encoder is placed in the base, one end of the decoder shaft can be inserted into the base through the connecting hole and connected to the encoder, and the roller is connected to the other end of the decoder shaft.

6. The multi-stage speed-changing roller structure of the handheld device according to claim 1, characterized in that: The outer side wall of the air duct shell has a boss protruding outwards, the roller is mounted on the boss, and the edge of the boss has a recessed portion for facilitating the pulling out of the roller.

7. The multi-stage speed-changing roller structure of the handheld device according to claim 1, characterized in that: A brushless motor is installed in the air duct housing, and the roller is located above the brushless motor.

8. The multi-stage speed-changing roller structure of the handheld device according to claim 1, characterized in that: The axis of the roller is perpendicular to the axis of the air duct shell.

9. The multi-stage speed-changing roller structure of the handheld device according to claim 1, characterized in that: The roller is provided with a plurality of recessed portions spaced apart along the circumferential direction of the roller.

10. The multi-stage speed-changing roller structure of the handheld device according to claim 1, characterized in that: The handheld device body also includes a shell, which is sleeved outside the air duct shell, and a part of the roller is located inside the shell.

Images