Display screen automatic and manual turnover structure and tower fan

Abstract

This utility model relates to an automatic and manual screen flipping structure and a tower fan, comprising: a rotating structure including a drive motor and a transmission component; a screen assembly rotatably disposed in a groove in the top cover of the machine to which it is mounted, including a display bracket and a display panel, the display panel being fixed to the display bracket; the output end of the drive motor is connected to the transmission component via a safety coupling structure; the safety coupling structure is configured to: a) transmit the output torque of the drive motor to the transmission component to drive the screen assembly to flip; b) when the torque received by the transmission component or the screen assembly exceeds a predetermined value due to obstruction, the safety coupling structure slips to interrupt the torque transmission. This utility model has both automatic and manual screen flipping functions, and avoids pinching hands and damaging the drive motor during the flipping process.

Description

Technical Field

[0001] This utility model relates to an air conditioning device, and more particularly to a display screen with automatic and manual flip structure and a tower fan. Background Technology

[0002] Most tower fans on the market currently have their displays fixed to the top of the unit. This fixed design forces users to stand directly above the machine to view operating information such as fan speed and temperature, resulting in a poor user experience. While some products feature rotating displays, they generally lack effective anti-pinch protection mechanisms. If a child inserts their fingers into the rotating gap during the automatic rotation of the display, it can easily cause a pinching injury, posing a safety hazard. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies of the prior art by proposing a method that can not only drive the display screen to automatically rotate, enhancing the product's technological feel and user experience, but also allow users to manually rotate it to adapt to different usage scenarios. More importantly, it can effectively prevent users' fingers from being pinched during the rotation process, ensuring high safety.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0005] A display screen that can be automatically flipped and manually flipped is provided, including:

[0006] A rotating structure, the rotating structure including a drive motor and a transmission component;

[0007] A display assembly, rotatably disposed within a recess in the top cover of the machine to which it is mounted, includes a display bracket and a display panel; the display panel is fixed to the display bracket.

[0008] The output end of the drive motor is connected to the transmission component via a safety coupling structure; the safety coupling structure is configured to: a) transmit the output torque of the drive motor to the transmission component to drive the display screen assembly to flip; b) when the torque received by the transmission component or the display screen assembly exceeds a predetermined value due to obstruction, the safety coupling structure slips to interrupt the torque transmission.

[0009] Furthermore:

[0010] The safety coupling structure is a torque limiting structure.

[0011] The torque limiter is a ball-bearing torque limiting structure.

[0012] The ball-type torque limiting structure includes a gear shaft connected to the output shaft of a drive motor; a drive gear loosely fitted on the gear shaft, with a drive gear limiting groove on its end face; a gear cover fixed inside the gear shaft; a spring and a steel ball disposed inside the gear cover; the steel ball engaging with the drive gear limiting groove under the preload of the spring; the drive gear meshing with the driven gear of the transmission component, and the driven gear being fixedly connected to the display bracket.

[0013] The drive motor can rotate in both directions, and through the safety coupling structure and transmission components, it drives the display screen assembly to flip upward or reset downward.

[0014] It also includes a sensing device, which includes a driven rod and a micro switch. The driven rod is fixed to one side of the display bracket, and the micro switch is fixedly installed at a position corresponding to the position that the driven rod can press when the display assembly is flipped to the upright position. When the display assembly is flipped upwards to the point where the driven rod presses the micro switch, the micro switch sends a signal to control the drive motor to stop working.

[0015] The display assembly can be flipped back and hidden in the groove of the top cover when not in use.

[0016] A tower fan is provided, including a housing and a fan assembly disposed within the housing. The fan assembly includes a fan, an air duct, and a motor. The motor drives the fan assembly to rotate and draw in airflow, which is then blown out along the air duct. The fan also includes an automatic and manual flip-up display screen structure as described above, which is disposed on the top cover of the housing.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By incorporating a safety coupling structure, the display screen can be automatically and manually flipped, balancing ease of operation, flexibility, and a high-tech feel. The slippage function of the safety coupling structure effectively prevents reverse drive and damage to the motor during manual flipping, and provides reliable anti-pinch protection. If an obstacle is encountered during automatic flipping, the coupling can immediately slip and idle, preventing injury to the user and ensuring high safety.

[0019] The display can be hidden away when not in use, maintaining the device's overall appearance and preventing dust accumulation and damage from bumps and knocks.

[0020] Using a ball-type torque limiter as a specific implementation of the safety coupling structure results in a compact structure, sensitive response, and high reliability. Attached Figure Description

[0021] Figure 1This is an exploded structural diagram of an embodiment of the automatic and manual flip-up display screen of this utility model.

[0022] Figure 2 This is a schematic diagram of the rotating structure of the display component in an embodiment of the automatic and manual flipping structure of the display screen of this utility model.

[0023] Figure 3 yes Figure 2 A magnified view of the rotating structure at point A.

[0024] Figure 4 This is a cross-sectional view of the sensing device in an embodiment of the automatic and manual flip-screen structure of this utility model.

[0025] Figure 5 This is a cross-sectional view of an embodiment of the automatic and manual flip-screen structure of this utility model in the triggered sensing state.

[0026] Figure 6 This is a schematic diagram of the display screen assembly in the flat (folded up) state of an embodiment of the tower fan of this utility model.

[0027] Figure 7 This is a schematic diagram of the display screen assembly in the tilted (working) state of an embodiment of the tower fan of this utility model. Detailed Implementation

[0028] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] like Figures 1 to 5 As shown, a display screen that can be automatically flipped and manually flipped includes:

[0030] Rotating structure 2, the rotating structure includes a drive motor 23 and a transmission component;

[0031] The display assembly 3 is rotatably disposed in the groove of the top cover 1 of the machine on which it is mounted, and includes a display bracket 31, a PCB display board 32 and a display panel 33; the display panel 33 is fixed to the display bracket 31.

[0032] The output end of the drive motor 23 is connected to the transmission component via a safety coupling structure; the safety coupling structure is configured as follows:

[0033] a) Transmit the output torque of the drive motor to the transmission components to drive the display assembly to flip;

[0034] b) When the torque applied to the transmission component or display assembly exceeds a predetermined value due to obstruction, the safety coupling structure slips to interrupt torque transmission.

[0035] The drive motor can rotate in both directions, and drives the display screen assembly to flip upward or reset downward through a safety coupling structure and transmission components.

[0036] The present invention provides a display screen automatic and manual flip structure, the core of which is to add a safety coupling structure between the drive motor 23 and the transmission component (such as a gear set).

[0037] In this embodiment, the safety coupling structure specifically adopts a ball-bearing torque limiting structure. This ball-bearing torque limiting structure includes a gear shaft 24 connected to the output shaft of the drive motor 23, a drive gear 25 loosely fitted on the gear shaft 24, a gear cover 26 fixed within the gear shaft 24, and a spring 28 and steel balls 27 disposed within the gear cover 26. Under the preload of the spring 28, the steel balls 27 are partially embedded in the drive gear limiting groove 251 on the end face of the drive gear 25. The drive gear 25 meshes with the driven gear 22, and the driven gear 22 is fixedly connected to the display bracket 31.

[0038] The display assembly 3 is fixedly connected to the driven gear 22 via the display bracket 31 and is rotatably accommodated in the groove of the top cover 1. The PCB display board 32 and the display panel 33 are mounted on the display bracket 31.

[0039] The driven rod 41 of the sensing device 4 is fixed to one side of the display bracket 31. The micro switch 42 is fixed in the appropriate position, and its spring 421 is in the position that the driven rod 41 can press when the display assembly 3 is flipped to the vertical position.

[0040] The work process is as follows:

[0041] Automatic flip display: Power flow: Drive motor 23 → Gear shaft 24 → Steel ball 27 → Drive gear limiting groove 251 → Drive gear 25 → Driven gear 22 → Display bracket 31. That is, the torque generated by the drive motor is transmitted to the steel ball 27 through the gear shaft 24. Under the pressure of the spring 28, the steel ball 27 is tightly locked in the limiting groove 251 of the drive gear, generating sufficient static friction. This friction (i.e., the maximum static friction) is greater than the force required to rotate the entire gear transmission system and the display assembly.

[0042] Therefore, the drive gear 25 rotates firmly along with the gear shaft 24, thus smoothly transmitting power and driving the display screen to flip. After the device is started, the drive motor 23 rotates forward, and the torque is transmitted to the drive gear 25 through the safety coupling structure (i.e., the engagement of the steel ball 27 and the limiting groove 251), which in turn drives the display bracket 31 to flip upward via the driven gear 22. The driven rod 41 rotates accordingly, and when it touches the micro switch spring 421, the micro switch 42 sends a signal, the drive motor 23 stops, and the display screen is in an angled display state, such as... Figure 5As shown.

[0043] Manual Flip Protection: When the user manually flips the display assembly 3, external force is transmitted to the driven gear 22 through the display bracket 31, which drives the driving gear 25 to rotate. Since the driving gear 25 is loosely fitted on the gear shaft 24, its power transmission relies on the friction between the steel ball 27 and the limiting groove 251. When the manually applied torque exceeds this maximum static friction, the steel ball 27 overcomes the preload of the spring 28 and slides out of the limiting groove 251, causing the driving gear 25 to spin freely relative to the gear shaft 24. At this time, the gear shaft 24 is connected to the output shaft of the drive motor 23, and the motor's own resistance keeps it stationary, thus preventing external force from driving the motor output shaft in the opposite direction and protecting the motor from damage.

[0044] This ingenious design ensures that:

[0045] Automatic mode: The motor has sufficient power to overcome friction and drive normally.

[0046] Manual mode: The force applied manually is sufficient to overcome friction and cause the mechanism to slip, but not enough to damage the motor.

[0047] Anti-pinch and overload protection:

[0048] During the automatic flipping process, suppose the user's finger is inserted into the gap between the display assembly 3 and the top cover 1 and is caught by the rising display assembly.

[0049] 1. Movement obstructed: The upward movement of the display assembly 3 is forced to stop due to contact with a finger. This means that the driven gear 22, which is fixedly connected to the display bracket 31, also stops rotating instantly.

[0050] 2. Transmission chain locking: Since the driven gear 22 and the driving gear 25 are meshed, the stopping of the driven gear 22 will immediately cause the driving gear 25 to also be unable to rotate.

[0051] 3. The motor is still rotating: At this time, the drive motor 23 is still running according to the program, continuously outputting torque to the gear shaft 24 in an attempt to make it rotate.

[0052] 4. Slippage Mechanism Trigger: The gear shaft 24, driven by the motor, continues to attempt to rotate. However, the driving gear 25, "connected" to the gear shaft 24 via the steel ball 27, cannot rotate because the driven gear 22 is "locked" in place. Therefore, the torque provided by the motor is concentrated at the contact point between the steel ball 27 and the driving gear retaining groove 251. This torque quickly exceeds the maximum static friction designed between the steel ball and the retaining groove. At this point, the powerful motor torque compresses the steel ball 27, causing it to overcome the preload of the spring 28 and retract into the gear cover 26. Once the steel ball "disengages" from the retaining groove, the gear shaft 24 can then idle inside the driving gear 25 (i.e., "slip"), while the driving gear 25 and the entire driven part remain stationary.

[0053] In this way, firstly, it protects the user; the display component 3 immediately stops moving, preventing further pressure on the finger and avoiding injury. The user can simply gently pull their finger out. Secondly, it protects the motor; the slippage mechanism allows the output shaft of motor 23 to continue rotating (unloaded), preventing the motor from overheating and burning out due to excessive current generated by being forced to stall.

[0054] Automatic Reset and Hiding: When the device is turned off, the drive motor 23 reverses, driving the display assembly 3 to flip downwards and reset into the groove of the top cover 1 via the safety coupling structure. Figure 6 As shown, the program controls the motor to stop.

[0055] It should be noted that the safety coupling structure is not limited to the ball-type torque limiter as the only implementation method. Any mechanical or magnetic coupling that can achieve the overload slippage function falls within the protection scope of this utility model.

[0056] like Figure 6 and Figure 7 As shown, a tower fan includes a base 20 and a housing 10 mounted on the base 20, and a fan assembly (not shown) disposed within the housing 10. The fan assembly includes a fan wheel, an air duct, and a motor. The motor drives the fan assembly to rotate, drawing in airflow, which is then blown out along the air duct. It also includes an automatic and manual flip-up display screen, as described above. The top cover is the top cover of the housing. The display screen assembly 3 rotates and protrudes from the top cover of the housing, facilitating user reading of fan speed, timer, and temperature, providing convenience. Figure 7 As shown. After use, the display assembly 3 flips back to its original position and is hidden in the groove inside the top cover 1 of the housing, as shown. Figure 6 As shown.

[0057] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and these modifications and substitutions should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A display screen automatic and manual turnover structure, characterized in that, include: A rotating structure, the rotating structure including a drive motor and a transmission component; A display assembly, rotatably disposed within a recess in the top cover of the machine to which it is mounted, includes a display bracket and a display panel; the display panel is fixed to the display bracket. The output end of the drive motor is connected to the transmission component via a safety coupling structure; the safety coupling structure is configured to: a) transmit the output torque of the drive motor to the transmission component to drive the display screen assembly to flip; b) when the torque received by the transmission component or the display screen assembly exceeds a predetermined value due to obstruction, the safety coupling structure slips to interrupt the torque transmission.

2. The automatic and manual turnover structure of a display screen according to claim 1, characterized in that, The safety coupling structure is a torque limiting structure.

3. The automatic and manual flipping structure of claim 2, wherein, The torque limiting structure is a ball-bearing torque limiting structure.

4. The automatic and manual flipping structure of claim 3, wherein, The ball-type torque limiting structure includes: The gear shaft connected to the output shaft of the drive motor; The drive gear, which is loosely fitted on the gear shaft, has a drive gear limiting groove on its end face; A gear cover fixed inside the gear shaft; A spring and a steel ball are disposed within the gear cover; the steel ball engages with the limiting groove of the drive gear under the preload of the spring. The driving gear meshes with the driven gear of the transmission component, and the driven gear is fixedly connected to the display bracket.

5. The automatic and manual flipping structure of a display screen according to claim 1, characterized in that, The drive motor can rotate in both directions, and through the safety coupling structure and transmission components, it drives the display screen assembly to flip upward or reset downward.

6. The automatic and manual flipping structure for a display screen according to claim 1, characterized in that, It also includes a sensing device, which includes a driven rod and a micro switch. The driven rod is fixed to one side of the display bracket, and the micro switch is fixedly installed at a position corresponding to the position that the driven rod can press when the display assembly is flipped to the upright position. When the display assembly is flipped upwards to the point where the driven rod presses the micro switch, the micro switch sends a signal to control the drive motor to stop working.

7. The automatic and manual flipping structure for a display screen according to claim 1, characterized in that, The display assembly can be flipped back and hidden in the groove of the top cover when not in use.

8. A tower fan, comprising a housing and a fan assembly disposed within the housing, the fan assembly comprising a fan wheel, an air duct, and a motor, wherein the motor drives the fan assembly to rotate and draw in airflow, the drawn-in airflow then being blown out along the air duct, characterized in that: It also includes an automatic and manual flip-up display structure as described in any one of claims 1 to 7, wherein the automatic and manual flip-up display structure is disposed on the top cover of the housing.

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