Stepless speed regulation fan

Abstract

The utility model discloses a stepless speed regulation fan which comprises a fan head and a base, the fan head is arranged on the base, the fan head comprises an installation cylinder, fan blades, a motor and a speed regulation device, the motor is arranged on the installation cylinder, the fan blades are connected with an output shaft of the motor, the speed regulation device is arranged on the installation cylinder, and the speed regulation device comprises an encoder, a control panel, a shifting piece and a rotating ring. The encoder is arranged in the mounting cylinder and electrically connected with the motor through the control panel, one end of the shifting piece is arranged on the encoder in a sleeving mode, the other end of the shifting piece is connected with the rotating ring, and the rotating ring is arranged on the mounting cylinder in a sleeving mode and can rotate relative to the mounting cylinder. When the speed of the fan needs to be adjusted, the rotating ring can be rotated so that the rotating ring can drive the shifting piece to rotate together, when the shifting piece rotates, the shifting piece acts on the encoder, the rotating speed of the motor is adjusted through the encoder, and therefore the motor drives the fan blades to adjust the rotating speed, different use requirements are met, the overall structure is simple, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to a fan, especially relates to a stepless speed regulation fan. BACKGROUND

[0002] In use, in order to meet different wind volume, the fan is equipped with a speed regulation structure, which can adjust the rotating speed of the fan blade. The existing various fans, including air circulation fan, are equipped with a speed regulation function, but the adjustment is basically through a button, and the fan has multiple gears to correspond to different wind force. However, the wind force of adjacent gears changes greatly, so it is sometimes difficult for the user to adjust to the appropriate wind force. SUMMARY

[0003] The utility model discloses a stepless speed regulation fan which can solve at least one of the above problems.

[0004] According to one aspect of the utility model, a stepless speed regulation fan is provided, which comprises a fan head and a base, the fan head is arranged on the base, the fan head comprises a mounting cylinder, a fan blade, a motor and a speed regulation device, the fan blade is connected with the output shaft of the motor, the speed regulation device is arranged on the mounting cylinder, the speed regulation device comprises an encoder, a control board, a dial piece and a rotating ring, the encoder is arranged in the mounting cylinder, the encoder is electrically connected with the motor through the control board, one end of the dial piece is sleeved on the encoder, the other end is connected with the rotating ring, the rotating ring is sleeved on the mounting cylinder and can rotate relative to the mounting cylinder.

[0005] The utility model has the advantages that: the rotating ring and the dial piece are arranged, so when the fan needs to be speed-regulated, the rotating ring can be rotated to drive the dial piece to rotate together, the dial piece acts on the encoder when rotating, the rotating speed of the motor is adjusted through the encoder, so the rotating speed of the fan blade driven by the motor is adjusted; since the rotating amount of the rotating ring is not limited by gears when rotating, the speed of the motor can be adjusted arbitrarily within a certain range under the action of the dial piece, the function of stepless speed regulation is realized, different use requirements are met, the overall structure is simple, and the operation is convenient.

[0006] In some embodiments, the inner side wall of the rotating ring is provided with a insertion hole, and the other end of the dial piece is inserted into the insertion hole. Thus, the insertion hole is arranged to facilitate the connection of the dial piece and the rotating ring and facilitate the rotation of the dial piece driven by the rotating ring.

[0007] In some embodiments, the fan head further comprises a pressing piece, the inner side wall of the rotating ring is provided with a first mounting step, the pressing piece is arranged on the first mounting step, the pressing piece is located below the dial piece, a limiting piece is arranged on the pressing piece, and the top end of the limiting piece is higher than the bottom end of the dial piece. Thus, the rotating position of the dial piece can be limited by the limiting piece on the pressing piece.

[0008] In some embodiments, the limiting piece is two pieces, and the two limiting pieces are respectively located on two sides of the pushing piece. Thus, the two limiting pieces can limit the positions of the pushing piece at two ends, and thus the maximum and minimum fan of the fan blade can be limited, so that the fan blade can rotate in a stable speed range.

[0009] In some embodiments, the pressing piece is provided with a plurality of mounting holes, and the pressing piece is fixed in the mounting cylinder through the mounting holes. Thus, the mounting holes facilitate the fixing of the pressing piece in the mounting cylinder, and the first mounting step can be limited by the pressing piece to prevent the rotating ring from being separated from the mounting cylinder.

[0010] In some embodiments, the pressing piece and the limiting piece are integrally formed. Thus, the processing and forming of the limiting piece are facilitated.

[0011] In some embodiments, the infinitely variable speed fan further comprises a pressing spring, the control board is provided with a mounting column, the mounting column is provided with a through hole, one end of the pressing spring is arranged in the through hole, and the other end is located outside the mounting column. Thus, the pressing spring can function as a switch, which facilitates the control of the opening and closing of the motor, i.e., the opening and closing of the fan.

[0012] In some embodiments, the infinitely variable speed fan further comprises an end cover, the end cover is arranged on the rotating ring, and the other end of the pressing spring abuts against the end cover. Thus, the end cover can protect the corresponding structure in the mounting cylinder.

[0013] In some embodiments, the top end of the mounting cylinder is provided with a second mounting step, and the bottom end of the rotating ring is arranged on the second mounting step. Thus, the second mounting step facilitates the mounting of the rotating ring on the mounting cylinder, and the rotating ring can rotate relative to the mounting cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of an embodiment of the infinitely variable speed fan of the utility model;

[0015] Figure 2 is a structural schematic view of a fan head in an embodiment of the infinitely variable speed fan of the utility model;

[0016] Figure 3 is Figure 2 a structural schematic view from another angle;

[0017] Figure 4 is Figure 2 a sectional view of the structural schematic view;

[0018] Figure 5is the structure schematic view of the installation cylinder in the stepless speed regulation fan of the utility model;

[0019] Figure 6 is Figure 5 the sectional structure schematic view;

[0020] Figure 7 is the structure schematic view of the inner part structure of the installation cylinder in the stepless speed regulation fan of the utility model. DETAILED DESCRIPTION

[0021] The utility model will be explained further in detail in combination with the drawings.

[0022] Refer to Figures 1-7 A stepless speed regulation fan, including fan head 1 and base 2, fan head 1 is located on base 2, and fan head 1 includes installation cylinder 11, fan blade 12, motor 13 (not shown in the drawing) and speed regulation device 14, fan blade 12 is connected with the output shaft of motor 13, speed regulation device 14 is located on installation cylinder 11, and speed regulation device 14 includes encoder 141, control panel 142, dial 143 and rotating ring 144, encoder 141 is located in installation cylinder 11, encoder 141 is electrically connected with motor 13 through control panel 142, one end of dial 143 is sleeved on encoder 141, the other end is connected with rotating ring 144, rotating ring 144 is sleeved on installation cylinder 11 and can rotate relative to installation cylinder 11;Fan blade 12 is connected with the output shaft of motor 13, and the output shaft of motor 13 rotates to drive fan blade 12 to rotate.

[0023] Among them, control panel 142 is the existing commonly used control circuit board, the signal transmission of encoder 141 reaches control panel 142, and then the signal output of control panel 142 reaches motor 13, realizes that motor 13 rotates according to corresponding rotating speed, and encoder 141 realizes the adjustment of the rotating speed of motor 13 through control panel 142, which is prior art, and the specific control process will not be repeated here.

[0024] In actual use, fan head 1 further includes shell 16, the shell 16 is covered on the outside of installation cylinder 11, and the fan blade 12 is covered, which plays a protective role.When the fan needs to be speed-regulated, the operator can act on rotating ring 144, drive rotating ring 144 to rotate;Rotating ring 144 rotates, drives dial 143 to rotate together, so that dial 143 acts on encoder 141, changes the encoding information on encoder 141, and finally makes the rotating speed of motor 13 increase or decrease, thereby realizing the adjustment of the rotating speed of fan blade 12 and realizing the stepless speed regulation of the fan.

[0025] The inner side wall of the rotating ring 144 is provided with a insertion hole 145, and the other end of the pressing piece 143 is inserted into the insertion hole 145.

[0026] The fan head 1 further comprises a pressing piece 15, the inner side wall of the rotating ring 144 is provided with a first installation step 146, the pressing piece 15 is arranged on the first installation step 146, the pressing piece 15 is located below the pressing piece 143, and the pressing piece 15 is provided with a limiting piece 151, and the top end of the limiting piece 151 is higher than the bottom end of the pressing piece 143.

[0027] The limiting piece 151 is two pieces, and the two limiting pieces 151 are located on the two sides of the pressing piece 143. When the pressing piece 143 approaches one of the limiting pieces 151, the rotating speed of the motor gradually decreases; when the pressing piece 143 approaches the other limiting piece 151, the rotating speed of the motor gradually increases, so that the rotating speed of the motor can be adjusted by controlling the rotating direction of the rotating ring 144, the rotating speed of the fan blade is adjusted, the wind power is adjusted, and different use requirements are met.

[0028] The pressing piece 15 is provided with a plurality of installation holes 152, and the pressing piece 15 is fixed in the installation cylinder 11 through the installation holes 152.

[0029] When the pressing piece 15 is installed, the pressing piece 15 is fixed in the installation cylinder 11 through the screws penetrating through the installation holes 152, the pressing piece 15 is pressed above the first installation step 146, and the first installation step 146 is limited, so that the rotating ring 144 is always matched with the installation cylinder 11, and the rotating ring 144 is prevented from being separated from the installation cylinder 11.

[0030] The pressing piece 15 and the limiting piece 151 are integrally injection molded structures.

[0031] The endless speed regulation fan further comprises a pressing spring 3, the control panel 142 is provided with an installation column 147, the installation column 147 is provided with a through hole, one end of the pressing spring 3 is arranged in the through hole, and the other end is located outside the installation column 147.

[0032] The end cover 4 can be made of transparent plastic panel; when acting on the position of the pressing spring 3, the end cover 4 is slightly deformed at the contact position with the pressing spring 3, so that the pressing spring 3 is correspondingly deformed, the pressing spring 3 acts on the control panel, the signal is changed, the control panel controls the opening and closing of the motor according to the signal change, so as to control the opening and closing of the fan. Through the pressing spring 3 acting on the control panel 142, the opening and closing of the motor are realized, which belongs to the prior art, and the specific principle will not be described here.

[0033] The inner side of the top end of the mounting cylinder 11 is provided with a second mounting step 111, and the bottom end of the rotating ring 144 is arranged on the second mounting step 111. Thus, by arranging the second mounting step 111, the rotating ring 144 can be limited and quickly mounted on the mounting cylinder 11.

[0034] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A stepless speed-regulating fan, characterized in that, The device includes a fan head (1) and a base (2). The fan head (1) is mounted on the base (2). The fan head (1) includes a mounting cylinder (11), a fan blade (12), a motor (13), and a speed control device (14). The fan blade (12) is connected to the output shaft of the motor (13). The speed control device (14) is mounted on the mounting cylinder (11). The speed control device (14) includes an encoder (141), a control board (142), a paddle (143), and a rotating ring (144). The encoder (141) is located inside the mounting cylinder (11). The encoder (141) is electrically connected to the motor (13) through the control board (142). One end of the paddle (143) is sleeved on the encoder (141), and the other end is connected to the rotating ring (144). The rotating ring (144) is sleeved on the mounting cylinder (11) and can rotate relative to the mounting cylinder (11).

2. The stepless speed-regulating fan according to claim 1, characterized in that, The inner wall of the rotating ring (144) is provided with a socket (145), and the other end of the paddle (143) is inserted into the socket (145).

3. The stepless speed-regulating fan according to claim 2, characterized in that, The fan head (1) also includes a pressure plate (15). The inner side wall of the rotating ring (144) is provided with a first mounting step (146). The pressure plate (15) is located on the first mounting step (146). The pressure plate (15) is located below the lever (143). The pressure plate (15) is provided with a limiting piece (151). The top of the limiting piece (151) is higher than the bottom of the lever (143).

4. The stepless speed-regulating fan according to claim 3, characterized in that, The limiting piece (151) consists of two pieces, which are located on both sides of the lever (143).

5. The stepless speed-regulating fan according to claim 4, characterized in that, The pressure plate (15) is provided with a plurality of mounting holes (152), and the pressure plate (15) is fixed in the mounting cylinder (11) through the mounting holes (152).

6. The stepless speed-regulating fan according to claim 3 or 4, characterized in that, The compression plate (15) and the limiting plate (151) are integrally formed.

7. The stepless speed-regulating fan according to any one of claims 1 to 5, characterized in that, It also includes a pressing spring (3), and the control plate (142) is provided with a mounting post (147). The mounting post (147) is provided with a through hole. One end of the pressing spring (3) is located in the through hole, and the other end is located outside the mounting post (147).

8. The stepless speed-regulating fan according to claim 7, characterized in that, It also includes an end cap (4), which is placed on the rotating ring (144), and the other end of the pressing spring (3) abuts against the end cap (4).

9. The stepless speed-regulating fan according to any one of claims 1 to 5, characterized in that, The top inner side of the mounting cylinder (11) is provided with a second mounting step (111), and the bottom end of the rotating ring (144) is located on the second mounting step (111).

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