Central point searching device and fan

Abstract

The utility model discloses a central point searching device and a fan, the central point searching device comprises a baffle plate, the baffle plate is connected with an output shaft of a motor, the baffle plate can swing under the driving of the motor, the baffle plate is provided with at least two hollow grooves, and the at least two hollow grooves are concentrically arranged; light-emitting elements and light-sensitive elements of the at least two first photoelectric sensors are arranged above and below the hollow-out groove respectively, and detection light emitted by the first photoelectric sensors can penetrate through the hollow-out groove. After the central point searching device is applied to the fan, when the fan is started, the current head swinging direction of the fan can be recognized through recognition of the first photoelectric sensor on the two hollowed-out grooves, then the fan can swing towards the central point to avoid collision, meanwhile, the central point can be accurately positioned in the head swinging process of the fan, and therefore the head swinging direction of the fan is not influenced. And therefore, the fan can realize more intelligent operations.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially, it relates to a center point finding device and fan. BACKGROUND

[0002] In prior art, such as fan product generally is by a step motor drive rotating shaft to and fro swing, to realize swing air supply. However, this kind of fan cannot be clear deviation direction and angle before starting, can only find the center point through the way of impact stroke limit, so it is easy to damage the gear box of motor, and the fan needs to impact stroke limit once every time starting, if the switching frequency is frequent, it is more easy to lead to swing function failure. SUMMARY

[0003] In view of above technical problem, the utility model provides a center point finding device and fan to solve the problem of easy damage when the existing fan searches swing center point.

[0004] Other characteristics and advantages of the present disclosure will become apparent from the following detailed description, or will be learned by practice of the present disclosure.

[0005] According to an aspect of the utility model, a center point finding device is disclosed, which comprises:

[0006] The baffle is connected with a motor output shaft, and can swing under the drive of the motor, at least two hollow grooves are arranged on the baffle, the center point of the device is located between the at least two hollow grooves, and the at least two arc grooves are symmetrically arranged.

[0007] At least two first photoelectric sensors are arranged above and below the hollow grooves respectively, and the detection light emitted by the first photoelectric sensor can pass through the hollow groove.

[0008] Further, the baffle is fan-shaped.

[0009] Further, the hollow groove is arc-shaped and arranged with the same center.

[0010] Further, the baffle is provided with a limiting portion on both sides.

[0011] Further, a plurality of holes arranged in an arc shape are arranged on the baffle, and a second photoelectric sensor is further arranged in the center point finding device, the light emitting element and the photosensitive element of the second photoelectric sensor are arranged above and below the hole respectively, and when the baffle rotates, the detection light of the second photoelectric sensor can pass through the hole or be blocked by the baffle between the two holes.

[0012] Further, the plurality of holes and the hollow groove are arranged with the same center.

[0013] Further, the plurality of hole positions are distributed at equal intervals.

[0014] According to another aspect of the present application, a fan is provided, which comprises the center point finding device as described above, and further comprises an air outlet assembly, the air outlet assembly comprising a cover body, a fan blade arranged in the cover body, and a fan arranged in the cover body and used for driving the fan blade to rotate, an output shaft of the motor being directly or indirectly connected to the cover body and used for driving the cover body to swing.

[0015] By adopting the above scheme, the present application has the following beneficial effects:

[0016] When the fan is turned on, the center point finding device can identify the current swing direction of the fan, and the fan can swing to the center point to avoid collision; based on the at least two first photoelectric sensors, the center point can be accurately positioned during the swing of the fan, and more intelligent operations can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic view of the center point finding device of the present application;

[0018] Figure 2 Fig. 2 is another structural schematic view of the center point finding device of the present application;

[0019] Figure 3 Fig. 3 is still another structural schematic view of the center point finding device of the present application;

[0020] Figure 4 Fig. 4 is a structural schematic view of the center point finding device in another embodiment of the present application.

[0021] REFERENCE SIGNS:

[0022] 1, baffle; 11, hollow groove; 12, hole position; 2, output shaft; 3, first photoelectric sensor; 4, limiting portion; 5, second photoelectric sensor. DETAILED DESCRIPTION

[0023] The present application will be described in detail below in combination with the drawings and specific embodiments:

[0024] REFERENCE Figure 1The utility model provides a center point finding device, including: baffle 1, baffle 1 is connected with a motor output shaft 2, it can swing under the drive of motor, baffle 1 is provided with at least two hollowed-out slots 11, the center point of device is located between at least two hollowed-out slots 11, at least two hollowed-out slots 11 are symmetrically arranged;At least two first photoelectric sensors 3, the light emitting element and photosensitive element of first photoelectric sensor 3 are arranged respectively above and below hollowed-out slot 11, and the detection light emitted by first photoelectric sensor 3 can pass through hollowed-out slot 11.

[0025] Wherein, baffle 1 is fan-shaped, at least two hollowed-out slots 11 are symmetrically distributed on baffle 1, and limit part 4 is arranged on the two sides of baffle 1.

[0026] The above-mentioned device works, for example, Figure 1 When both first photoelectric sensors 3 can detect light signals, it indicates that the current fan has found the center point. Figure 2 When only the right first photoelectric sensor 3 detects light signals, it indicates that the current baffle 1 needs to rotate to the right, that is, the fan swings to the right to find the center point. Figure 3 Similarly, when only the left first photoelectric sensor 3 detects light signals, the fan needs to rotate to the left to find the center point until both first photoelectric sensors 3 detect light signals.

[0027] The above-mentioned center point finding device can be applied to the fan, which is used to confirm the center point when the fan swings, and the fan further includes an air outlet assembly, the air outlet assembly includes a cover body, a fan blade arranged in the cover body, and a fan arranged in the cover body and used to drive the fan blade to rotate, and the output shaft 2 of the motor is directly or indirectly connected to the cover body, which is used to drive the cover body to swing.

[0028] When the output shaft 2 of the motor rotates, the cover body will rotate because the output shaft 2 is fixed to the cover body, that is, the entire air outlet assembly rotates to realize the swing, and then the above-mentioned center point finding device is used, the baffle 1 is driven by the motor to rotate synchronously, and the center point of the fan swing is located, and then the angle and speed of the fan swing can be adjusted according to requirements.

[0029] After the center point finding device is applied to the fan, the current swing direction of the fan can be identified when the fan is turned on, and then the fan can swing to the center point to avoid collision; based on the at least two first photoelectric sensors 3 arranged, the center point can be accurately located during the fan swing, and then more intelligent operations can be realized.

[0030] In another embodiment, for example, Figure 4As shown, the baffle 1 of the center point finding device is further provided with a plurality of arc-shaped arranged hole positions 12, the light emitting element and the photosensitive element of the second photoelectric sensor 5 are arranged above and below the hole positions 12 respectively, when the baffle 1 rotates, the detection light of the second photoelectric sensor 5 can pass through the hole positions 12 or be blocked between two hole positions 12.

[0031] Among them, the plurality of hole positions 12 can be arranged with the hollow groove 11 and the same center, and the plurality of hole positions 12 can be equidistant and symmetrically distributed with the hollow groove 11.

[0032] The first photoelectric sensor 3 and the arc-shaped hollow groove 11 of the last embodiment are used to find the center point of the fan, and the second photoelectric sensor 5 and the hole position 12 in the embodiment are used to position the angle of the fan. Specifically, the limiting part 4 is used to limit the maximum swing angle of the fan, and the arrangement of the hole position 12 can monitor the angle of the fan swing, and further monitor the gear of the fan swing, the gear of the swing is defined according to the speed of the swing, and the angle of the corresponding fan swing can be calculated according to the angle of the baffle, the number of hole positions 12 and the interval of hole positions 12. In work, when both first photoelectric sensors 3 can detect light signals, it means that the current fan has found the center point. After finding the center point, when the fan swings to the right, the left first photoelectric sensor 3 detects the light signal, and the right first photoelectric sensor 3 does not detect the light signal, at this time, the second photoelectric sensor 5 detects how many times the light signal, which represents how many hole positions 12 the fan rotates, and after conversion, the angle of the fan rotation can be obtained, and the swing angle of the fan can be easily set by cooperating with the swing angle of the fan (not more than the limiting part 4).

[0033] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A center point finding device, characterized by, The application relates to a fan comprising a center point searching device. The fan comprises a baffle connected with an output shaft of a motor, the baffle can swing under the drive of the motor, at least two hollow grooves are arranged on the baffle, a center point of the device is located between the at least two hollow grooves, and the at least two hollow grooves are symmetrically arranged. At least two first photoelectric sensors are arranged above and below the hollow grooves respectively, and the detection light emitted by the first photoelectric sensors can pass through the hollow grooves.

2. The center point finding device of claim 1, wherein, The hollow grooves are arranged in an arc shape and have the same center.

3. The center point finding device of claim 1, wherein, The baffle is in a fan shape.

4. The center point finding device of claim 1, wherein, Limiting parts are arranged on two sides of the baffle.

5. The center point finding device of claim 1, wherein, Arc-shaped multiple hole positions are further arranged on the baffle, a second photoelectric sensor is further arranged in the center point searching device, the light emitting element and the photosensitive element of the second photoelectric sensor are arranged above and below the hole positions respectively, when the baffle rotates, the detection light of the second photoelectric sensor can pass through the hole positions or be blocked by the baffle between two hole positions.

6. The center point finding device of claim 5, wherein, The multiple hole positions are arranged with the same center as the hollow grooves.

7. The center point finding device of claim 5, wherein, The multiple hole positions are distributed at equal intervals.

8. A fan, characterized by The fan comprises the center point searching device according to any one of claims 1-7, and further comprises an air outlet assembly, the air outlet assembly comprises a cover body, fan blades arranged in the cover body, and a fan arranged in the cover body and used for driving the fan blades to rotate, and the output shaft of the motor is directly or indirectly connected with the cover body and used for driving the cover body to swing.

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