Fan oscillating mechanism and fan

Abstract

The utility model provides a fan oscillating mechanism and a fan, and belongs to the technical field of pumping devices or systems specially suitable for elastic fluid. The fan oscillating mechanism comprises a fixed seat, an oscillating seat and a driving device, the driving device is connected with a position switch for controlling the driving device to rotate forwards and backwards, the position switch is provided with triggering pieces, one of the fixed seat and the oscillating seat is provided with a position switch mounting position, and the other one of the fixed seat and the oscillating seat is provided with more than two groups of triggering piece mounting positions. The trigger piece installation position is arranged on the base to define different head shaking angles, and a trigger piece detachable installation structure is arranged on the trigger piece installation position. And / or the number of the position switches is two, the number of the position switch mounting positions is more than two, so that different head shaking angles are defined, and the position switch mounting positions are provided with position switch detachable mounting structures. According to the utility model, a proper head shaking range can be determined according to different use occasions, the use is more flexible, and the problem that the use of the fan is limited due to the fixed head shaking angle of the existing head shaking mechanism is solved.

Description

Technical Field

[0001] This utility model relates to a fan oscillation mechanism and a fan, belonging to the technical field of pumping devices or systems specifically applicable to elastic fluids. Background Technology

[0002] Currently, there are many types of fans, the most common being ordinary blower fans and mist fans. Ordinary blower fans only blow air and are generally used indoors, while mist fans can spray mist while blowing air, resulting in a significant cooling effect. They are mostly used in outdoor public places such as stadiums, scenic spots, shuttle bus stops, parks, open-air performance venues, and night markets. Fans are generally equipped with an oscillating mechanism to adjust the range and angle of airflow or mist.

[0003] For example, Chinese utility model patent CN215370319U discloses a precise control mechanism for the oscillation angle. This mechanism includes a fixed base, an oscillation seat rotatably mounted on the fixed base, a motor driving the oscillation seat to rotate, and a switch plate controlling the motor's operation. The switch plate is located on the oscillation seat, with a micro switch at its bottom. The top of the fixed base has several protrusions along the rotation axis of the oscillation seat for triggering the micro switches. In use, when the motor drives the oscillation seat to rotate and reach a set angle, the protrusions on the top of the fixed base abut against and trigger the micro switches. The micro switches transmit an electrical signal to the switch plate and control the motor to rotate in the opposite direction or stop rotating, thus achieving precise control of the oscillation angle when the oscillation seat oscillates or is turned off.

[0004] However, since the protrusion is integrally formed on the top surface of the fixed base, and the position of the protrusion is fixed, the adjustable oscillation angle of the oscillation base is also fixed. It is impossible to determine the appropriate oscillation range according to different usage scenarios, which greatly limits the use of the fan. Utility Model Content

[0005] The purpose of this utility model is to provide a fan oscillation mechanism to solve the problem that the fixed oscillation angle of existing fan oscillation mechanisms limits the use of the fan; the purpose of this utility model is also to provide a fan to solve the above problems.

[0006] To achieve the above objectives, the fan oscillation mechanism of this utility model adopts the following technical solution:

[0007] A fan oscillation mechanism includes a fixed base, an oscillation base, and a drive device for driving the oscillation base to oscillate relative to the fixed base. The drive device is connected to a position switch for controlling its forward and reverse rotation. The position switch is equipped with a trigger element. One of the fixed base and the oscillation base has a position switch mounting position, and the other has a trigger element mounting position. Two trigger element mounting positions defining the same oscillation range form a group. There are two or more groups of trigger element mounting positions to define different oscillation angles. A detachable mounting structure for the trigger element is provided at the trigger element mounting position. Alternatively, there are two position switches, and two position switch mounting positions defining the same oscillation range form a group. There are two or more groups of position switch mounting positions to define different oscillation angles. A detachable mounting structure for the position switch is provided at the position switch mounting position.

[0008] The beneficial effects of the above technical solution are as follows: This utility model belongs to an improved invention and includes three parallel technical solutions. In the first technical solution, two trigger mounting positions that define the same oscillation range form a group. There are two or more sets of trigger mounting positions to define different oscillation angles. A detachable mounting structure for the trigger is provided at the trigger mounting position. Since the trigger is detachable and there are two or more sets of trigger mounting positions, the oscillation seat can have different oscillation angles when mounted at different mounting positions. This allows the appropriate oscillation range to be determined according to different usage scenarios, making the use more flexible.

[0009] In the second technical solution, two position switch mounting positions that define the same oscillation range form a group, and there are two or more groups of position switch mounting positions to define different oscillation angles. The position switch mounting positions are provided with detachable mounting structures. Since the position switches are detachable and there are two or more groups of position switch mounting positions, the oscillation base can have different oscillation angles when mounted on different mounting positions, so that the appropriate oscillation range can be determined according to different usage scenarios, making the use more flexible.

[0010] The third technical solution includes the first and second technical solutions, which can also adjust the oscillation range of the oscillation base, solving the problem that the fixed oscillation angle of the existing fan oscillation mechanism limits the use of the fan.

[0011] Furthermore, the oscillating base includes a mounting plate with two position switches. The mounting plate has two position switch mounting positions, and the two position switches are fixed to the mounting plate along the oscillation axis of the oscillating base.

[0012] Furthermore, the oscillating base includes two mounting plates arranged at intervals around the oscillation axis of the oscillating base, and each mounting plate is provided with at least one position switch mounting position.

[0013] Furthermore, the mounting plate has a stop portion for engaging with the corresponding trigger element to prevent the oscillating seat from continuing to swing in the event of a failure of the corresponding position switch.

[0014] Furthermore, the trigger includes a threaded rod with threads on its outer surface, and there are two or more sets of trigger mounting positions on the swaying seat or fixed seat. The detachable mounting structure of the trigger on the swaying seat or fixed seat is a threaded hole that can be connected to the threaded rod.

[0015] Furthermore, the fan oscillation mechanism includes a controller connected to both the position switch and the motor in the drive device. The controller and the position switch are both arranged on the oscillation base. The oscillation base includes a circular vertical tube or an arc-shaped vertical plate. The position switch is arranged on the outer periphery of the vertical tube or the vertical plate. A support base is also fixedly installed on the outer periphery of the vertical tube or the vertical plate. A control main board is installed on the support base. The controller is a chip installed on the control main board.

[0016] Furthermore, the oscillating seat includes an arc-shaped upright plate, a position switch or trigger arranged on the outer periphery of the upright plate, a base plate fixed to the bottom of the upright plate, and a geared motor as the driving device. The geared motor is fixed on the fixed base and the main body of the geared motor is located below the fixed base. The output shaft of the geared motor is driven by a drive shaft, and a bearing is installed between the drive shaft and the fixed base. A support surface for supporting the base plate is provided on the drive shaft. The drive shaft also has an outgoing end that passes through the base plate. The outgoing end is provided with an external thread and connected to a clamping nut for clamping the base plate.

[0017] Furthermore, the mounting base includes a central plate and an arc-shaped plate located around the central plate. A trigger mounting position or a position switch mounting position is provided on the arc-shaped plate, and a mounting structure for mounting the cable tray is provided on the side of the central plate facing away from the arc-shaped plate.

[0018] Furthermore, the mounting positions of each trigger element are arranged at intervals on the same circumference, and / or the mounting positions of each position switch are arranged at intervals on the same circumference.

[0019] To achieve the above objectives, the fan in this utility model adopts the following technical solution:

[0020] A fan includes a fan head and an oscillation mechanism connected to the fan head. The oscillation mechanism includes a fixed base, an oscillation seat, and a drive device for driving the oscillation seat to oscillate relative to the fixed base. The drive device is connected to a position switch for controlling its forward and reverse rotation. The position switch is equipped with a trigger element. One of the fixed base and the oscillation seat has a position switch mounting position, and the other has a trigger element mounting position. Two trigger element mounting positions defining the same oscillation range form a group. There are two or more groups of trigger element mounting positions to define different oscillation angles. A detachable mounting structure for the trigger element is provided at the trigger element mounting position. Alternatively, there are two position switches. Two position switch mounting positions defining the same oscillation range form a group. There are two or more groups of position switch mounting positions to define different oscillation angles. A detachable mounting structure for the position switch is provided at the position switch mounting position.

[0021] The beneficial effects of the above technical solution are as follows: This utility model belongs to an improved invention. The oscillating mechanism includes three parallel technical solutions. In the first technical solution, two trigger mounting positions that define the same oscillating range form a group. There are two or more sets of trigger mounting positions to define different oscillating angles. A detachable mounting structure for the trigger is provided at the trigger mounting position. Since the trigger is detachable and there are two or more sets of trigger mounting positions, the oscillating seat can have different oscillating angles when mounted at different mounting positions. This allows the appropriate oscillating range to be determined according to different usage scenarios, making it more flexible to use.

[0022] In the second technical solution, two position switch mounting positions that define the same oscillation range form a group, and there are two or more groups of position switch mounting positions to define different oscillation angles. The position switch mounting positions are provided with detachable mounting structures. Since the position switches are detachable and there are two or more groups of position switch mounting positions, the oscillation base can have different oscillation angles when mounted on different mounting positions, so that the appropriate oscillation range can be determined according to different usage scenarios, making the use more flexible.

[0023] The third technical solution includes the first and second technical solutions, which can also adjust the oscillation range of the oscillation base, solving the problem that the fixed oscillation angle of the existing oscillation mechanism limits the use of the fan.

[0024] Furthermore, the oscillating base includes a mounting plate with two position switches. The mounting plate has two position switch mounting positions, and the two position switches are fixed to the mounting plate along the oscillation axis of the oscillating base.

[0025] Furthermore, the oscillating base includes two mounting plates arranged at intervals around the oscillation axis of the oscillating base, and each mounting plate is provided with at least one position switch mounting position.

[0026] Furthermore, the mounting plate has a stop portion for engaging with the corresponding trigger element to prevent the oscillating seat from continuing to swing in the event of a failure of the corresponding position switch.

[0027] Furthermore, the trigger includes a threaded rod with threads on its outer surface, and there are two or more sets of trigger mounting positions on the swaying seat or fixed seat. The detachable mounting structure of the trigger on the swaying seat or fixed seat is a threaded hole that can be connected to the threaded rod.

[0028] Furthermore, the oscillating mechanism includes a controller connected to both the position switch and the motor in the drive device. The controller and the position switch are arranged on the oscillating base. The oscillating base includes a circular upright tube or an arc-shaped upright plate. The position switch is arranged on the outer periphery of the upright tube or the upright plate. A support base is also fixedly installed on the outer periphery of the upright tube or the upright plate. A control main board is installed on the support base. The controller is a chip installed on the control main board.

[0029] Furthermore, the oscillating seat includes an arc-shaped upright plate, a position switch or trigger arranged on the outer periphery of the upright plate, a base plate fixed to the bottom of the upright plate, and a geared motor as the driving device. The geared motor is fixed on the fixed base and the main body of the geared motor is located below the fixed base. The output shaft of the geared motor is driven by a drive shaft, and a bearing is installed between the drive shaft and the fixed base. A support surface for supporting the base plate is provided on the drive shaft. The drive shaft also has an outgoing end that passes through the base plate. The outgoing end is provided with an external thread and connected to a clamping nut for clamping the base plate.

[0030] Furthermore, the mounting base includes a central plate and an arc-shaped plate located around the central plate. A trigger mounting position or a position switch mounting position is provided on the arc-shaped plate, and a mounting structure for mounting the cable tray is provided on the side of the central plate facing away from the arc-shaped plate.

[0031] Furthermore, the mounting positions of each trigger element are arranged at intervals on the same circumference, and / or the mounting positions of each position switch are arranged at intervals on the same circumference. Attached Figure Description

[0032] Figure 1 This is a perspective view of embodiment 1 of the fan of this utility model;

[0033] Figure 2 This is a partial cross-sectional view of embodiment 1 of the fan of this utility model;

[0034] Figure 3 This is a perspective view of the fan oscillation mechanism in embodiment 1 of this utility model.

[0035] Figure 4 This is a perspective view of the fan oscillation mechanism in embodiment 1 of this utility model.

[0036] Figure 5This is a cross-sectional view of the fan oscillation mechanism in embodiment 1 of this utility model;

[0037] Figure 6 This is a top view of the fan oscillation mechanism in embodiment 2 of this utility model;

[0038] Figure 7 This is a top view of the fan oscillation mechanism in embodiment 3 of this utility model;

[0039] Figure 8 This is a top view schematic diagram of the fan oscillation mechanism in embodiment 4 of this utility model;

[0040] Figure 9 This is a perspective view of embodiment 5 of the fan of this utility model;

[0041] Figure 10 This is a partial structural diagram of embodiment 5 of the present invention.

[0042] In the diagram: 1. Pile; 2. Fan head; 21. Fan housing; 22. Fan blade; 3. Mounting base; 31. Center plate; 311. Mounting hole; 32. Arc-shaped plate; 321. First threaded hole; 322. Second threaded hole; 323. Mounting hole; 33. Internal gear ring; 4. Oscillating base; 41. Vertical plate; 42. Base plate; 421. Mounting plate; 43. Top plate; 431. Connecting hole; 5. Gear motor; 6. Transmission block; 7. Transmission shaft; 8. Bearing; 9. Lower clamping nut; 10. Upper clamping nut; 11. First bolt; 12. Second bolt; 13. First micro switch; 14. Second micro switch; 15. Support base; 16. Control main board; 17. Oscillating box; 18. Connecting arm. Detailed Implementation

[0043] To address the technical problems existing in the prior art, the basic concept of this utility model is to set two or more sets of trigger mounting positions and / or position switch mounting positions, and the triggers and / or position switches are detachable. By selecting different sets of trigger mounting positions and / or position switch mounting positions, the oscillation angle of the fan oscillation mechanism can be changed, thereby enabling the determination of the appropriate oscillation range according to different usage scenarios, making it more flexible in use.

[0044] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0045] Embodiment 1 of the fan in this utility model:

[0046] like Figure 1 As shown, the fan in this embodiment is a single-head cooling mist fan, including a post 1 and a fan head 2. The post 1 is cylindrical and used to fix it to the ground. The fan head 2 is located at the top of the post 1, as shown... Figure 2As shown, the device includes a fan housing 21, fan blades 22 installed inside the fan housing 21, a rotary motor that controls the rotation of the fan blades 22, and an atomizing device. During operation, purified water is drawn in by the pump unit and generates water under stable pressure. This water is transported to the atomizing device through a pipeline, and the water is sprayed out through a nozzle with an extremely fine aperture. Depending on the nozzle aperture, micro-mist particles ranging from 5 to 50 micrometers can be generated. These micro-mist particles are sprayed while blowing air under the action of the fan blades and the rotary motor.

[0047] A swing mechanism is installed between the fan head 2 and the post 1. This mechanism controls the fan head 2 to swing within a certain angle range, thus allowing the fan to have a certain radiation range. Specifically... Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the swaying mechanism includes a fixed base 3, a swaying seat 4 rotatably mounted on the fixed base 3, and a driving device for driving the swaying seat 4 to sway relative to the fixed base 3. The fixed base 3 is fixedly connected to the top of the pile 1. Specifically, the fixed base 3 is located in the inner hole at the top of the pile 1. Multiple fixing holes 323 are provided at intervals on the outer circumferential surface of the fixed base 3. The fixing holes 323 are threaded holes. By passing screws through the pile 1 and connecting them to the fixing holes 323, the fixing between the fixed base 3 and the pile 1 can be achieved.

[0048] The oscillation axis of the oscillation base 4 extends vertically. The oscillation base 4 includes an arc-shaped upright plate 41. A bottom plate 42 is fixed to the bottom of the upright plate 41, and a top plate 43 is fixed to the top. The top plate 43 is provided with a connection hole 431 for fixed connection with the fan housing 21. The fan housing 21 is provided with a corresponding connection hole. Thus, the fan housing 21 can be fixed to the top plate 43 of the oscillation base 4 by screws, so that the fan housing 21, fan blades 22, rotating motor and atomizing device can rotate together with the oscillation base 4.

[0049] Specifically, the upright plate 41 is made by cutting a round tube. The upright plate 41 is welded and fixed to the base plate 42. In order to ensure the reliability of the fixation, a complete ring is retained at one end during the process of cutting the round tube in half. The ring is welded and fixed to the base plate 42, which increases the fixation area.

[0050] The base plate 42 is rotatably mounted on the fixed base 3. Specifically, the driving device is a geared motor 5, which is fixed on the fixed base 3 with its main body located below the fixed base 3. The output shaft of the geared motor 5 is connected to a drive shaft 7, thus the geared motor 5 can drive the drive shaft 7 to rotate. A bearing 8 is installed between the drive shaft 7 and the fixed base 3 to ensure rotational stability. The drive shaft 7 has a support surface for supporting the base plate 42, and it also has an outlet end that passes through the base plate 42. The outlet end has an external thread and is connected to an upper clamping nut 10 for pressing the base plate 42, thereby achieving relative fixation between the swaying seat 4 and the drive shaft 7. When the drive shaft 7 rotates, it can drive the swaying seat 4 to rotate together. Since the upright plate 41 is arc-shaped, it forms an open structure, which facilitates the installation of the upper clamping nut 10.

[0051] Furthermore, the lower end of the drive shaft 7 is provided with an inner hole, and a drive block 6 is welded and fixed in the inner hole. The drive block 6 has an anti-rotation hole (a non-circular irregular hole) that cooperates with the output shaft of the geared motor 5 to prevent rotation. Therefore, the output torque of the geared motor 5 is transmitted to the drive shaft 7 through the drive block 6, and the geared motor 5 and the drive shaft 7 are indirectly connected by transmission.

[0052] Furthermore, in this embodiment, the bearing 8 is a deep groove ball bearing, which can withstand a certain axial load and better support the weight of the drive shaft 7, the oscillating seat 4, and the fan head 2. In other embodiments, the bearing 8 can also be a thrust bearing or an angular contact ball bearing. A collar is provided in the middle of the drive shaft 7. The upper end face of the collar forms the aforementioned support surface, and the lower end face of the collar presses against the inner ring of the bearing 8. Both the upper and lower parts of the collar are provided with external threads. The upper external thread connects to the aforementioned upper clamping nut 10, and the lower external thread connects to the lower clamping nut 9. The lower clamping nut 9 clamps the inner ring of the bearing 8. The upper clamping nut 10 and the lower clamping nut 9 work together to achieve relative fixation of the inner ring of the bearing 8, the drive shaft 7, and the base plate 42. The outer ring of the bearing 8 is interference-fitted onto the fixed seat 3, and the fixed seat 3 is provided with corresponding stepped holes.

[0053] The geared motor 5 is connected to a position switch for controlling its forward and reverse rotation. The oscillating mechanism includes a controller connected to both the position switch and the geared motor 5. The position switch is equipped with a trigger element. One of the fixed base 3 and the oscillating base 4 has a position switch mounting position, and the other has a trigger element mounting position. Two trigger element mounting positions defining the same oscillating range form a group. There are two or more groups of trigger element mounting positions to define different oscillating angles. A detachable trigger element mounting structure is provided at each trigger element mounting position. Because the trigger element is detachable and there are two or more groups of trigger element mounting positions, mounting it in different positions allows the oscillating base to have different oscillating angles, thus enabling the determination of a suitable oscillating range according to different applications, making it more flexible in use.

[0054] Specifically, in this embodiment, the trigger mounting position is set on the fixed base 3, and the position switch mounting position is set on the oscillating base 4. There are two position switches, namely a first micro switch 13 and a second micro switch 14, which are arranged on the outer periphery of the upright plate 41. At the same time, there are also two triggers, which are located at the two ends of the rotation stroke of the two micro switches respectively. When the first micro switch 13 rotates to one end of its stroke, the first micro switch 13 can be triggered by the trigger, and then the controller controls the reduction motor 5 to output a reverse action, and the oscillating base 4 begins to reverse. When the second micro switch 14 reverses to the other end of its stroke, the second micro switch 14 is triggered, and the controller controls the reduction motor 5 to output a reverse action again, and the oscillating base 4 reverses again. This process is repeated to realize the reciprocating oscillation of the fan head 2.

[0055] Specifically, the main body of the base plate 42 is a circular ring plate, and a rectangular mounting plate 421 is integrally connected to the circular ring plate. The mounting plate 421 extends to one side of the outer periphery of the upright plate 41. The first micro switch 13 is fixed on the lower surface of the mounting plate 421, and the second micro switch 14 is fixed on the upper surface of the mounting plate 421. That is, in this embodiment, there is only one mounting plate 421. The mounting plate 421 is provided with two position switch mounting positions. The two position switches are fixed on the mounting plate 421 along the swing axis of the rocker arm 4, which is equivalent to stacking them one on top of the other. Of course, in order to ensure that both micro switches can be triggered, the contacts of the two micro switches are not on the same side. One contact extends outward to one side in the circumferential direction, and the other contact extends outward to the other side in the circumferential direction.

[0056] Meanwhile, when a micro switch malfunctions, it will no longer be able to send a signal to the controller, and the controller will be unable to control the oscillating seat 4 to reverse normally. The geared motor 5 will continue to output torque in one direction, causing the trigger to bend or break the contact of the micro switch. In order to prevent the oscillating seat 4 from passing the trigger and continuing to rotate, which would lead to the wire connected to the motor being torn off, the mounting plate 421 in this embodiment has a stop part for blocking the oscillating seat 4 from continuing to swing when the corresponding micro switch malfunctions. The stop part is the end of the mounting plate 421. Under normal circumstances, the micro switch is triggered when its contact is pressed and rotated by a certain angle, which in turn causes the swing arm 4 to reverse. If the micro switch malfunctions and cannot provide a feedback signal, the contact will be continuously pressed. When the contact rotates to its limit position, or when the contact deforms to a certain extent after reaching its limit position, the stop part of the mounting plate 421 can stop the trigger and prevent the swing arm 4 from continuing to swing. Subsequently, the protection program set by the controller can promptly stop the geared motor 5 to protect it from being damaged.

[0057] In this embodiment, the two triggers are the first bolt 11 and the second bolt 12. Corresponding to the first bolt 11, the fixed seat 3 is provided with three (in other embodiments, two or more) first threaded holes 321 arranged at intervals around the swing axis of the swaying seat 4. The shank of the first bolt 11 is a threaded rod with threads on the outside. The threaded rod can be connected to any of the first threaded holes 321. The position of each first threaded hole 321 constitutes a trigger mounting position. The first bolt 11 has three trigger mounting positions. At the same time, the first threaded hole 321 itself constitutes a detachable trigger mounting structure.

[0058] Corresponding to the second bolt 12, the fixed seat 3 is provided with three (in other embodiments, two or more) second threaded holes 322 arranged at intervals around the swing axis of the swaying seat 4. Similarly, the shank of the second bolt 12 is a threaded rod with threads on the outside. The threaded rod can be connected to any of the second threaded holes 322. The position of each second threaded hole 322 constitutes a trigger mounting position. The second bolt 12 also has three trigger mounting positions. At the same time, the second threaded hole 322 itself constitutes a detachable trigger mounting structure.

[0059] When the oscillating base 4 rotates, it drives the two microswitches to rotate together. Assuming that the two microswitches rotate in the direction of the first bolt 11, the contact of the first microswitch 13 eventually contacts the first bolt 11, triggering the first microswitch 13 and sending a signal to the controller. The controller controls the geared motor 5 to reverse according to the feedback signal, causing the two microswitches to rotate in the direction of the second bolt 12. Eventually, the contact of the second microswitch 14 contacts the second bolt 12, triggering the second microswitch 14 and sending a signal to the controller. The controller then controls the geared motor 5 to reverse again according to the feedback signal, and so on, to achieve the reciprocating oscillation of the fan head 2.

[0060] Three first threaded holes 321 and three second threaded holes 322 are arranged at intervals on the same circumference, that is, six trigger mounting positions are arranged at intervals on the same circumference. One first threaded hole 321 and one second threaded hole 322 form a group. When the first bolt 11 is installed in different first threaded holes 321 and the second bolt 12 is installed in different second threaded holes 322, a total of nine groups of trigger mounting positions can be formed. However, since the three first threaded holes 321 and the three second threaded holes 322 are arranged at equal intervals, the swaying angle of three of the nine groups of trigger mounting positions is the same as that of the other groups. There are a total of six different swaying angles. Of course, if the three first threaded holes 321 or the three second threaded holes 322 are not arranged at equal intervals, a maximum of nine different swaying angles can be defined.

[0061] In other words, when the first bolt 11 and / or the second bolt 12 are installed in different threaded holes, the timing of the triggering of the first micro switch 13 and / or the second micro switch 14 can be changed, altering the swing angle range of the oscillating seat 4 and thus adjusting the radiation range of the fan head 2. Therefore, the radiation range can be changed according to specific application scenarios, offering flexible and unrestricted use. Since bolts are used as triggering elements, the cost is low, configuration is easy, and installation and position adjustment are convenient, improving operational efficiency.

[0062] In this embodiment, the controller and position switches are simultaneously arranged on the rocker arm 4, enabling the controller and the two microswitches to rotate together. This keeps the wires connecting the controller and the two microswitches relatively stationary, ensuring stability during use. Specifically, a support base 15 is fixedly provided on the outer periphery of the upright plate 41, and a control motherboard 16 is mounted on the support base 15. The controller is a chip mounted on the control motherboard 16, which can be a microcontroller, FPGA, DSP, MCU, or other types of chips.

[0063] In addition, the fixing base 3 in this embodiment is plate-shaped, including a central plate 31 and an arc-shaped plate 32 located around the central plate 31 and in a semi-circular arc shape. The outer peripheral surface of the arc-shaped plate 32 is concentric with the outer peripheral surface of the upright plate 41. The fixing hole 323 is provided on the outer peripheral surface of the arc-shaped plate 32, and the axis of the fixing hole 323 extends radially along the arc-shaped plate 32. The first threaded hole 321 and the second threaded hole 322 are both provided on the arc-shaped plate 32, and their axes extend in the vertical direction. That is, the two triggering elements—the first bolt 11 and the second bolt 12—are both installed on the arc-shaped plate 32. In addition, the side of the central plate 31 facing away from the arc-shaped plate 32 is provided with a mounting structure for mounting the wire harness board. In this embodiment, the mounting structure is specifically a mounting hole 311, which is a threaded hole, so that the wire harness board is fixed to the central plate 31 by screws and the wire harness is pressed onto the central plate 31. The wire harness runs from the side of the central plate 31 facing away from the arc-shaped plate 32, making the structure more compact.

[0064] Embodiment 2 of the fan in this utility model:

[0065] like Figure 6 As shown, the difference between this embodiment and embodiment 1 is that the first micro switch 13 and the second micro switch 14 in this embodiment are not stacked one on top of the other, but are arranged at intervals along the circumference. At this time, the first bolt 11 and the second bolt 12 are still detachable and the fixing seat 3 is provided with multiple trigger mounting positions to change the installation position of the first bolt 11 and the second bolt 12. Of course, only the position of the first bolt 11 or only the position of the second bolt 12 can be adjusted.

[0066] Embodiment 3 of the fan in this utility model:

[0067] like Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, the first microswitch 13 and the second microswitch 14 are fixed components mounted on the fixed base 3, while the first bolt 11 and the second bolt 12 are rotating components mounted on the oscillating base 4. When the oscillating base 4 rotates to the set position, the first bolt 11 can trigger the first microswitch 13, thereby causing the oscillating base 4 to reverse. When it reverses to the set position, the second bolt 12 can trigger the second microswitch 14, thereby causing the oscillating base 4 to reverse again, and so on. At the same time, the oscillating base 4 is provided with multiple threaded holes spaced circumferentially to form multiple trigger mounting positions, which can change the position of the first bolt 11 and / or the second bolt 12 to achieve adjustment of the oscillation angle.

[0068] Embodiment 4 of the fan in this utility model:

[0069] like Figure 8 As shown, the difference between this embodiment and embodiment 3 is that there is only one bolt on the oscillating seat 4, which is the first bolt 11. At this time, there is only one threaded hole on the oscillating seat 4 for installing the first bolt 11. The position of the first bolt 11 is not adjustable. There is only one trigger mounting position, but the positions of the first micro switch 13 and / or the second micro switch 14 are adjustable. The first micro switch 13 and / or the second micro switch 14 are mounted on the fixed seat 3 by screws, and the fixed seat 3 is provided with at least two corresponding mounting holes. Each mounting hole is arranged at intervals around the swing axis of the oscillating seat 4. The position of each mounting hole constitutes a position switch mounting position, and the mounting hole itself is a detachable mounting structure for the position switch. Similarly, two position switch mounting positions that limit the same oscillation range form a group. There can be more than two groups of position switch mounting positions, thereby limiting different oscillation angles. That is, by changing the position of the first micro switch 13 and / or the second micro switch 14, the oscillation angle can also be adjusted.

[0070] Embodiment 5 of the fan in this utility model:

[0071] like Figure 9 As shown, the fan in this embodiment is a dual-head cold fog fan, which also includes a post 1. The top of the post 1 is connected to two fan heads 2 through a oscillating mechanism. The oscillating mechanism can control the two fan heads 2 to oscillate simultaneously.

[0072] Combination Figure 9 and Figure 10As shown, the oscillating mechanism includes an oscillating box 17 and connecting arms 18 connected to both sides of the oscillating box 17. Each connecting arm 18 is connected to a fan head 2. The oscillating mechanism also includes a fixed base 3, an oscillating seat 4 rotatably mounted on the fixed base 3, and a driving device for driving the oscillating seat 4 to oscillate relative to the fixed base 3. The fixed base 3 is fixedly connected to the post 1. The driving device includes a geared motor 5 and a driving gear (not shown in the figure) mounted on the output end of the geared motor 5. An internal gear ring 33 is provided on the fixed base 3. The driving gear meshes with the internal gear ring 33. When the geared motor 5 controls the driving gear to rotate, the oscillating seat 4 can be driven to rotate under the meshing action of the driving gear and the internal gear ring 33. That is, the geared motor 5 in this embodiment is a follower motor.

[0073] Furthermore, the oscillating base 4 includes two mounting plates 421 spaced apart around the oscillation axis of the oscillating base 4. Each mounting plate 421 has a position switch mounting position, meaning that each of the two mounting plates 421 has a position switch installed. The two position switches are a first micro switch 13 and a second micro switch 14, which rotate together with the oscillating base 4. The fixed base 3 is equipped with a first bolt 11 and a second bolt 12, and a plurality of first threaded holes 321 are provided corresponding to the first bolt 11. Each first threaded hole 321 forms a trigger mounting position, and the first threaded hole 321 itself is a detachable trigger mounting structure. A plurality of second threaded holes 322 are provided corresponding to the second bolt 12, and each second threaded hole 322 forms a trigger mounting position, and the second threaded hole 322 itself is a detachable trigger mounting structure. The oscillation angle can be adjusted by adjusting the positions of the first bolt 11 and the second bolt 12.

[0074] In addition, each mounting plate 421 has a stop portion for engaging with the corresponding bolt to prevent the swing seat 4 from continuing to swing in the event of a corresponding microswitch failure. The stop portion is the end of the mounting plate 421 facing the corresponding bolt, so as to prevent the contact of the microswitch from being bent or broken, which would cause the swing seat 4 to continue to rotate past the bolt, thereby causing the wire connected to the motor to be torn off.

[0075] In other embodiments of the fan: Unlike embodiment 3, in addition to the adjustable positions of the first bolt and the second bolt, the positions of the first micro switch and the second micro switch are also adjustable. The first micro switch and the second micro switch are mounted on the fixed base by screws, and the fixed base is provided with at least two corresponding mounting holes. The mounting holes are arranged at intervals around the swing axis of the oscillating base. At this time, adjusting the position of any one, two, three, or four of the first bolt, the second bolt, the first micro switch, and the second micro switch can change the oscillation angle.

[0076] In other embodiments of the fan: Unlike embodiment 3, the positions of the first bolt and the second bolt are fixed and cannot be adjusted, while the positions of the first micro switch and the second micro switch are adjustable. The first micro switch and the second micro switch are mounted on the mounting base by screws, and the mounting base has at least two corresponding mounting holes. In this case, adjusting the position of any one or both of the first micro switch and the second micro switch can change the oscillation angle. Of course, in other embodiments, only the position of one micro switch can be adjusted.

[0077] In other embodiments of the fan: Unlike embodiment 2, in addition to the adjustable positions of the first and second bolts, the positions of the first and second microswitches are also adjustable. The first and second microswitches are mounted on the oscillation base by screws, and the oscillation base has at least two corresponding mounting holes. The mounting holes are spaced apart around the oscillation axis of the oscillation base. In this case, adjusting the position of any one, two, three, or four of the components (first bolt, second bolt, first microswitch, and second microswitch) can change the oscillation angle. Of course, in other embodiments, in addition to the adjustable positions of the first and second bolts, only the position of one microswitch may be adjustable.

[0078] In other embodiments of the fan: Unlike embodiment 2, the positions of the first and second bolts are fixed and cannot be adjusted, while the positions of the first and second microswitches are adjustable. The first and second microswitches are mounted on the oscillation base by screws, and the oscillation base has at least two corresponding mounting holes. In this case, adjusting the position of any one or both of the first and second microswitches can change the oscillation angle. Of course, in other embodiments, besides the fixed and non-adjustable positions of the first and second bolts, only one microswitch may be adjustable.

[0079] In other embodiments of the fan: Unlike embodiment 2, only one microswitch is provided, with its contact facing downwards. The first and second bolts are still detachable and the mounting base has multiple mounting positions to adjust the installation positions of the first and second bolts. Of course, only the position of the first bolt or only the second bolt can be adjusted. To ensure that both the first and second bolts can trigger the same microswitch, the heads of the first and second bolts need to be trimmed to create a guide bevel. The guide bevel first contacts the contact of the microswitch to ensure that the contact can move and the microswitch can be triggered.

[0080] In other embodiments of the fan: Unlike embodiment 1, the mounting structure provided on the side of the center plate facing away from the arc-shaped plate can also be a welded stud, or in other embodiments, the mounting structure may not be provided, and the fixing seat does not have a wire harness function.

[0081] In other embodiments of the fan: Unlike embodiment 1, the mounting base is a complete annular plate.

[0082] In other embodiments of the fan: Unlike embodiment 1, the drive device includes a motor and a drive gear installed at the output end of the motor. In this case, a driven gear can be installed on the transmission shaft or an external gear ring can be provided on the outer circumference of the transmission shaft. The drive gear meshes with the driven gear or the external gear ring, thereby driving the transmission shaft to rotate.

[0083] In other embodiments of the fan: Unlike embodiment 1, when the bearing is a thrust bearing, the lower clamping nut is no longer required, and the bearing is only supported by the fixed seat. In this case, the lower part of the drive shaft does not need to be provided with external threads and can be set as a smooth shaft.

[0084] In other embodiments of the fan: Unlike embodiment 1, the transmission block can be omitted, and the output shaft of the geared motor is directly anti-rotationally engaged with the transmission shaft, that is, the transmission shaft is directly machined with an anti-rotation hole.

[0085] In other embodiments of the fan: Unlike embodiment 1, the drive shaft may not include a collar, but instead has a shoulder. The drive shaft consists of a large-diameter section and a small-diameter section, with a shoulder formed between the large-diameter section and the small-diameter section. The shoulder can support the base plate of the oscillating seat. At the same time, the large-diameter section is a smooth rod section that is assembled with a bearing, and the small-diameter section is a screw section that passes through the base plate of the oscillating seat and is connected to a clamping nut.

[0086] In other embodiments of the fan: Unlike embodiment 1, the vertical plate of the oscillating seat can be replaced with a circular vertical tube. In this case, the upper clamping nut can be installed by extending from the upper end of the vertical tube. If a wire needs to pass through, a wire hole can be opened on the tube wall of the vertical tube.

[0087] In other embodiments of the fan: the micro switch can also be replaced with a roller limit switch or a direct-acting limit switch, or of course, a non-contact proximity switch.

[0088] In other embodiments of the fan: the controller and the position switch can be arranged on the fixed base at the same time to ensure that the wiring harness connecting the two is not tangled. Of course, the controller and the position switch can be on the fixed base and the other on the oscillation base, as long as the wiring harness between the two is long enough and will not be disconnected.

[0089] In other embodiments of the fan: Unlike embodiment 1, the mounting plate for installing the two position switches can be a separate plate, welded and fixed separately to the base of the oscillating seat, rather than being integrally connected to the base plate of the oscillating seat.

[0090] In other embodiments of the fan: the trigger can also be replaced with a screw, the shank of which forms a threaded rod.

[0091] In other embodiments of the fan: the trigger can also be replaced with a stud, such as a single-ended stud or a double-ended stud, in which case the threaded rod is the stud itself.

[0092] In other embodiments of the fan: the trigger can also be a trigger block or a trigger rod without threads. In this case, the trigger can be magnetically installed on the fixed base or oscillating base to achieve detachable installation. At the same time, multiple trigger magnetic positions are provided on the fixed base or oscillating base to change the installation position of the trigger.

[0093] In other embodiments of the fan: the position switch can be magnetically mounted on the fixed base or the oscillating base, thereby achieving detachable installation. At the same time, multiple magnetic positions for the position switch are provided on the fixed base or the oscillating base to change the installation position of the position switch.

[0094] In other embodiments of the fan: the controller may not be a chip mounted on the control motherboard, but a separate PLC.

[0095] In other embodiments of the fan: when there are multiple trigger mounting positions, the trigger mounting positions do not have to be on the same circumference, but can be on different circumferences, as long as it is ensured that the corresponding position switch can still be triggered after the position of the trigger changes.

[0096] In other embodiments of the fan: when there are multiple position switch mounting positions, the position switch mounting positions do not have to be on the same circumference, but can be on different circumferences, as long as it is ensured that the position switch can still be triggered by the trigger after the position changes.

[0097] In other embodiments of the fan: the fan may also be a regular fan that can only blow air.

[0098] The embodiment of the fan oscillation mechanism in this utility model is as follows: the specific structure of the fan oscillation mechanism is the same as that of the oscillation mechanism in any of the above-mentioned fan embodiments, and will not be repeated here.

[0099] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A fan oscillation mechanism, comprising a fixed base, an oscillation base, and a drive device for driving the oscillation base to oscillate relative to the fixed base, the drive device being connected to a position switch for controlling its forward and reverse rotation, the position switch being configured with a trigger element, a position switch mounting position being provided on one of the fixed base and the oscillation base, and a trigger element mounting position being provided on the other, characterized in that... Two trigger mounting positions that define the same oscillation range form a group, and there are two or more groups of trigger mounting positions to define different oscillation angles. A detachable mounting structure for the trigger is provided at each trigger mounting position. And / or there are two position switches, and two position switch mounting positions that define the same oscillation range form a group. There are two or more groups of position switch mounting positions to define different oscillation angles. A detachable mounting structure for the position switch is provided at each position switch mounting position.

2. The fan oscillation mechanism according to claim 1, characterized in that, The oscillating base includes a mounting plate and two position switches. The mounting plate has two position switch mounting positions, and the two position switches are fixed to the mounting plate along the oscillation axis of the oscillating base.

3. The fan oscillation mechanism according to claim 1, characterized in that, The oscillating base includes two mounting plates arranged at intervals around the oscillation axis of the oscillating base, and each mounting plate is provided with at least one position switch mounting position.

4. The fan oscillation mechanism according to claim 2 or 3, characterized in that, The mounting plate has a stop part that engages with the corresponding trigger element to prevent the oscillating seat from continuing to swing in the event of a failure of the corresponding position switch.

5. The fan oscillation mechanism according to claim 1, characterized in that, The trigger element includes a threaded rod with threads on its outer surface. There are two or more sets of trigger element mounting positions on the swaying seat or fixed seat. The detachable mounting structure of the trigger element on the swaying seat or fixed seat is a threaded hole that can be connected to the threaded rod.

6. The fan oscillation mechanism according to claim 1, characterized in that, The fan oscillation mechanism includes a controller connected to both a position switch and a motor in the drive unit. The controller and the position switch are both arranged on the oscillation base. The oscillation base includes a circular vertical tube or an arc-shaped vertical plate. The position switch is arranged on the outer periphery of the vertical tube or the vertical plate. A support base is also fixedly installed on the outer periphery of the vertical tube or the vertical plate. A control main board is installed on the support base. The controller is a chip installed on the control main board.

7. The fan oscillation mechanism according to claim 1, characterized in that, The oscillating base includes an arc-shaped upright plate, with a position switch or trigger arranged on the outer periphery of the upright plate. A base plate is fixed to the bottom of the upright plate. The driving device is a geared motor, which is fixed on the fixed base with its main body located below the fixed base. The output shaft of the geared motor is connected to a drive shaft, and a bearing is installed between the drive shaft and the fixed base. A support surface for supporting the base plate is provided on the drive shaft. The drive shaft also has an outlet end that passes through the base plate. The outlet end is provided with an external thread and connected to a clamping nut for pressing the base plate.

8. The fan oscillation mechanism according to any one of claims 1 to 3, characterized in that, The mounting base includes a central plate and an arc-shaped plate located around the central plate. A trigger mounting position or a position switch mounting position is provided on the arc-shaped plate. The side of the central plate facing away from the arc-shaped plate has a mounting structure for mounting the cable tray.

9. The fan oscillation mechanism according to any one of claims 1 to 3, characterized in that, The mounting positions of each trigger element are arranged at intervals on the same circumference, and / or the mounting positions of each position switch are arranged at intervals on the same circumference.

10. A fan, comprising a fan head and an oscillation mechanism connected to the fan head, characterized in that, The oscillating mechanism is the fan oscillating mechanism as described in any one of claims 1 to 9.

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