Multifunctional oscillating fan

Abstract

The utility model relates to the technical field of oscillating fans, in particular to a multifunctional oscillating fan which comprises an oscillating fan assembly, and the oscillating fan assembly comprises a lifting type supporting column, a fan shell installed above the lifting type supporting column and a front end cover installed on the front end face of the fan shell. A fan motor is arranged in the fan shell, an output shaft of the fan motor is connected with a fan blade shaft barrel piece with a plurality of fan blades, and a shock absorption and noise reduction assembly is arranged at the end, facing the front end cover, of the fan blade shaft barrel piece. The shock absorption and noise reduction assembly comprises two air spring buffers which are embedded in the fan blade shaft barrel piece in a back-to-back mode, a supporting and positioning shaft installed between the free end of the fan blade shaft barrel piece and the rotary connection front end cover, and silica gel shock absorption buffering sleeves which are arranged on the outer walls of the peripheral sides of the two ends of the supporting and positioning shaft in a sleeving mode respectively. And common high-frequency vibration and noise of a traditional fan are eliminated, so that a user is not interfered by the noise, and a more quiet and pleasant environment can be created.

Description

Technical Field

[0001] The utility model relates to the technical field of oscillating fans, in particular to a multifunctional oscillating fan. Background Art

[0002] Fans are a common electronic product. When the weather is hot, people usually use fans to cool down. During use, when people need to change the direction of the fan blowing air, there are usually two structures to change the direction of the fan blowing air. One is to set the fan head to shake, so as to switch the direction of the fan head to achieve the effect of changing the wind direction, and the other is to set a rotatable wind guide cover at the fan outlet. The current shaking fan often produces a lot of noise due to its high speed and strong wind force. Although the noise may be relatively small at medium and low wind speeds, at the maximum wind speed, the noise generated by the friction between the fan shaft and mechanical equipment such as the motor and the axial movement noise during the high-speed rotation of the fan shaft may cause trouble to users, especially those who are sensitive to noise, especially when they need a quiet environment to rest or work.

[0003] After searching, the existing Chinese patent publication number: CN215566798U is a kind of oscillating fan, including a base, fixed blocks are connected to both sides of the base, rollers are provided at the bottom ends of the fixed blocks, and a first support column is connected to the top end of the base, a support frame is provided on the side of the first support column, a first electric push rod is installed in the support frame, and the bottom end of the first electric push rod passes through the base and is connected to a fixed plate.

[0004] The cited patent documents also have the same problem. The noise generated by the friction between the fan shaft and mechanical devices such as the motor and the axial movement noise during the high-speed rotation of the fan shaft may cause trouble to users, especially those who are sensitive to noise, especially when they need a quiet environment to rest or work. Utility Model Content

[0005] The utility model aims to provide a multifunctional oscillating fan to solve the above problems in view of the shortcomings of the prior art.

[0006] In order to achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is:

[0007] A multifunctional oscillating fan is provided, comprising an oscillating fan assembly, the oscillating fan assembly comprising a lifting support column, a fan housing installed above the lifting support column and a front end cover installed on the front end surface of the fan housing, a fan motor is arranged inside the fan housing, the output shaft of the fan motor is connected to a blade shaft cylinder member having a plurality of fan blades, a shock-absorbing and noise-reducing component is arranged at one end of the blade shaft cylinder member facing the front end cover, the shock-absorbing and noise-reducing component comprises two air spring buffers embedded in the blade shaft cylinder member back to back, a supporting positioning shaft installed between the free end of the blade shaft cylinder member and the rotatably connected front end cover, and silicone shock-absorbing and buffer sleeves respectively sleeved on the outer walls of the circumferential sides of both ends of the supporting positioning shaft.

[0008] Preferably, in this solution, the inner cavity of one end of the fan shaft cylinder member close to the front end cover is symmetrically divided into two separately arranged shock-absorbing buffer chambers by a fixed partition;

[0009] The fixed partition is welded in the inner cavity of the fan blade shaft cylinder.

[0010] In this solution, the two air spring buffers are preferably mounted symmetrically on the outer walls of both sides of the fixed partition, and the ends of the two air spring buffers facing away from each other are fixedly connected with an arc-shaped support plate;

[0011] The arc-shaped curved outer wall of each arc-shaped support plate elastically abuts against the inner wall of the shock-absorbing buffer chamber.

[0012] Preferably, in this solution, two snap-in holes are symmetrically provided on the outer wall of the fan blade shaft cylinder outside the shock-absorbing buffer chamber, and the outer wall of each arc-shaped support plate is symmetrically and integrally connected with two snap-in joints for being inserted into the snap-in holes.

[0013] Preferably, the end of the fan blade shaft cylinder member facing away from the fan motor is equipped with a detachable end cover by bolts, and the outer wall of the detachable end cover is welded with a first mounting sleeve which is sleeved on the circumference of one end of the supporting positioning shaft.

[0014] Preferably, a bearing seat is welded at the center of the inner wall of the front end cover, and a sealed bearing connected to the supporting positioning shaft is interference fit in the bearing seat.

[0015] Preferably, the outer wall of the bearing seat is welded with a second mounting sleeve which is sleeved on the circumference of the other end of the supporting positioning shaft, and the two silicone shock-absorbing and buffering sleeves are respectively embedded in the first mounting sleeve and the second mounting sleeve to provide shock-absorbing for the supporting positioning shaft.

[0016] Preferably, the inner wall of the detachable end cover is integrally formed with a sealing inner cover, and the sealing inner cover is sealingly fitted in the inner cavity of the fan blade shaft cylinder.

[0017] Preferably, the bottom end of the lifting support column is fixedly connected to a support base plate, and the bottom surface of the back of the fan housing is provided with an oscillating motor housing.

[0018] The beneficial effects of the utility model are:

[0019] This multifunctional oscillating fan has a special shock-absorbing and noise-reducing component at the connection between the fan shaft and the front cover, including an air spring buffer and an arc-shaped support plate, which can absorb and disperse the axial and radial vibration energy during the high-speed rotation of the fan blades, effectively reducing the noise caused by friction and high-speed rotation between the fan shaft and the fan motor. At the same time, the silicone shock-absorbing and buffer sleeves are installed at both ends of the support positioning shaft to absorb axial impact and vibration, further reducing the noise source, thereby significantly reducing the noise level of the fan when running at the maximum wind speed, providing users with a quieter and more comfortable use environment;

[0020] The coordination of the support and positioning shaft and the sealed bearing, as well as the shock-absorbing protection of the silicone shock-absorbing cushion sleeve, reduces the fatigue damage of the fan's internal mechanical structure caused by long-term vibration, effectively improves the overall stability of the fan, and thus extends the fan's service life and maintenance cycle;

[0021] While providing strong wind power, the fan eliminates the high-frequency vibration and noise common in traditional fans, allowing users to enjoy the coolness without being disturbed by noise, especially when sleeping at night or concentrating on work or study, creating a more quiet and pleasant environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the fan housing and the fan blade shaft cylinder of the utility model in the disassembled state;

[0025] Figure 3 It is a schematic diagram of the structure of the fan blade shaft cylinder and the detachable end cover of the utility model in the disassembled state;

[0026] Figure 4 This is a schematic diagram of the connection state structure of the support and positioning shaft of the utility model;

[0027] Figure 5It is a schematic diagram of the connection structure of the air spring buffer of the utility model.

[0028] Description of reference numerals:

[0029] In the figure: 1. Oscillating fan assembly; 2. Support base plate; 3. Lifting support column; 4. Fan housing; 5. Oscillating motor housing; 6. Front cover; 7. Connecting ear plate; 8. Connecting plate; 9. Fixing bolt; 10. Rear housing;

[0030] 11. Fan motor; 12. Rear end cover; 13. Fan blade shaft cylinder; 14. Fan blade; 15. Shock-absorbing and noise-reducing assembly; 16. Shock-absorbing and buffering chamber; 17. Fixed partition; 18. Removable end cover; 19. Sealed inner cover; 20. Threaded hole;

[0031] 21. Supporting and positioning shaft; 22. First mounting sleeve; 23. Silicone shock-absorbing and buffering sleeve; 24. Bearing seat; 25. Sealed bearing; 26. Second mounting sleeve; 27. Air spring buffer; 28. Arc support plate; 29. ​​Card connector. DETAILED DESCRIPTION

[0032] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the utility model and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0035] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0037] This embodiment discloses Figures 1 to 5 A multifunctional oscillating fan shown in the figure includes an oscillating fan assembly 1, which includes a lifting support column 3, a fan casing 4 installed above the lifting support column 3, and a front end cover 6 installed on the front end surface of the fan casing 4. A fan motor 11 is arranged inside the fan casing 4, and the output shaft of the fan motor 11 is connected to a blade shaft cylinder 13 with multiple fan blades 14. The bottom end of the lifting support column 3 is fixedly connected to a supporting base plate 2, and an oscillating motor casing 5 is arranged on the bottom surface of the back of the fan casing 4. A rear end shell 10 is integrally formed on the back of the fan casing 4, and a plurality of connecting ear plates 7 are welded to the inner wall of the rear end shell 10 in a circular array, and a connecting plate 8 is welded to the end of the fan motor 11. The connecting plate 8 is fixedly connected to the connecting ear plate 7 by bolts, and a rear end cover 12 is installed on the back of the rear end shell 10 by screws.

[0038] In this embodiment, a shock-absorbing and noise-reducing component 15 is provided at one end of the fan blade shaft cylinder 13 facing the front end cover 6. The shock-absorbing and noise-reducing component 15 includes two air spring buffers 27 embedded in the fan blade shaft cylinder 13 in back to back relation, a supporting positioning shaft 21 installed between the free end of the fan blade shaft cylinder 13 and the front end cover 6 for rotation connection, and silicone shock-absorbing buffer sleeves 23 respectively sleeved on the outer walls of the circumferential sides of the supporting positioning shaft 21 at both ends, so as to realize effective shock-absorbing and noise-reducing functions; the supporting positioning shaft 21 serves as the rotating connection point between the fan blade shaft cylinder 13 and the front end cover 6, ensuring that the fan blades can maintain stable axial motion while rotating at high speed, thereby preventing additional noise and wear caused by axial movement.

[0039] In this embodiment, the silicone shock-absorbing buffer sleeve 23, with its excellent elasticity and damping properties, is embedded in the positions where the supporting positioning shaft 21 passes through the first mounting sleeve 22 and the second mounting sleeve 26, thereby buffering and reducing the rotational motion of the supporting positioning shaft from the axial and radial directions, effectively suppressing the tiny vibrations caused by the operation of the bearing and the rotation of the fan blades.

[0040] In the present embodiment, the inner cavity at one end of the fan shaft cylinder member 13 close to the front end cover 6 is symmetrically divided into two separately arranged shock-absorbing buffer chambers 16 by a fixed partition 17. The fixed partition 17 is welded in the inner cavity of the fan shaft cylinder member 13. Two air spring buffers 27 are symmetrically installed on the outer walls of both sides of the fixed partition 17 back to back. The two air spring buffers 27 are fixedly connected to an arc support plate 28 at their back ends. The arc-shaped outer wall of each arc support plate 28 elastically abuts against the inner wall of the shock-absorbing buffer chamber 16, thereby enhancing the shock-absorbing effect.

[0041] In this embodiment, the air spring buffer 27 is an elastic element that works by utilizing gas pressure, and it can effectively absorb and dissipate the vibration energy generated by the fan shaft cylinder member 13 during high-speed rotation. When the fan shaft cylinder member 13 generates axial or radial vibration due to mechanical friction or high-speed rotation, the air spring buffer 27 converts this part of kinetic energy into smaller potential energy and heat energy through its own compression and extension action, thereby greatly reducing the vibration and noise transmitted to the fan housing and surrounding structures.

[0042] In this embodiment, the arc-shaped support plate 28 serves as a conducting element, which is designed to better evenly disperse the elastic force of the air spring buffer 27. Through the elastic abutment between its arc-shaped surface and the inner wall of the shock-absorbing buffer chamber 16, it ensures that the air spring buffer can stably and fully exert its shock-absorbing effect throughout the entire working stroke.

[0043] In this embodiment, two snap-in holes are symmetrically opened on the outer wall of the fan shaft cylinder 13 outside the shock-absorbing buffer chamber 16, and the outer wall of each arc-shaped support plate 28 is symmetrically connected with two snap-in joints 29 for inserting into the snap-in holes.

[0044] In this embodiment, a removable end cover 18 is installed at one end of the blade shaft cylinder 13 facing away from the fan motor 11 through a fixing bolt 9, and a first mounting sleeve 22 is welded on the outer wall of the removable end cover 18 and sleeved on the circumference of one end of the support and positioning shaft 21. A bearing seat 24 is welded at the center position of the inner wall of the front end cover 6, and a sealed bearing 25 connected to the support and positioning shaft 21 is interference fit in the bearing seat 24. The bearing seat 24 is used to fix and support the sealed bearing 25 to ensure that it always maintains precise positioning and stable rotation state during the operation of the fan; a second mounting sleeve 26 is welded on the outer wall of the bearing seat 24 and sleeved on the circumference of the other end of the support and positioning shaft 21, and two silicone shock-absorbing buffer sleeves 23 are respectively embedded in the first mounting sleeve 22 and the second mounting sleeve 26 for buffering and shock-absorbing of the support and positioning shaft 21, forming a double-end buffer structure.

[0045] In this embodiment, the sealed bearing 25 not only supports the free rotation of the positioning shaft 21, but also has good sealing performance, preventing dust and other impurities from entering the bearing, thereby extending the service life of the bearing. At the same time, the use of silent bearings can also reduce the noise generated by their own operation, and cooperate with the silicone shock-absorbing and buffering sleeve to achieve noise reduction treatment for the rotating part of the supporting positioning shaft.

[0046] In this embodiment, a sealing inner cover 19 is integrally formed on the inner wall of the removable end cover 18, and the sealing inner cover 19 is sealingly fitted in the inner cavity of the blade shaft cylinder member 13 to ensure the sealing inside the blade shaft cylinder member 13. A plurality of threaded holes 20 are opened in a circular array on the peripheral outer wall of the removable end cover 18, and bolts are passed through the threaded holes 20 to connect with the blade shaft cylinder member 13.

[0047] Working principle:

[0048] The multifunctional oscillating fan has a fan motor 11 installed at a preset position of a fan housing 4, and then a fan shaft cylinder member 13 with a plurality of fan blades 14 is connected to the output shaft of the fan motor 11. A fixed partition 17 is made at one end of the fan shaft cylinder member 13 facing the front end cover 6, and is welded in the inner cavity of the fan shaft cylinder member 13, so that the inner cavity is symmetrically divided into two shock-absorbing buffer chambers 16, and two air spring buffers 27 are symmetrically installed on the inner walls on both sides of the fixed partition 17, and one end of them is elastically contacted with the inner wall of the corresponding shock-absorbing buffer chamber 16 through an arc-shaped support plate 28, and the characteristics of the air spring buffer 27 are used to absorb the vibration and noise generated by the fan shaft cylinder member 13 when rotating at a high speed, and a support positioning shaft 21 is installed between the free end of the fan shaft cylinder member 13 and the front end cover 6, and it is ensured that it can realize flexible rotation in the bearing seat 24 in the front end cover 6 through the sealing bearing 25. Two silicone shock-absorbing and buffering sleeves 23 are respectively sleeved on both ends of the supporting and positioning shaft 21, and are respectively embedded in the first mounting sleeve 22 and the second mounting sleeve 26 to form a double axial shock-absorbing and buffering effect;

[0049] The fan motor 11 drives the blade shaft cylinder 13 and the multiple blades 14 thereon to rotate at high speed. When the blade shaft cylinder 13 generates axial movement or vibration caused by mechanical friction during high-speed rotation, the shock-absorbing and noise-reducing assembly located at the front end of the blade shaft cylinder 13 begins to play a role, and the support positioning shaft 21 passes through the blade shaft cylinder 13 and the front end cover 6, and realizes flexible rotation through the sealed bearing 25 in the bearing seat 24. In this process, the silicone shock-absorbing buffer sleeves 23 at both ends of the support positioning shaft 21 provide additional axial buffering, further reducing the vibration and noise generated by high-speed rotation.

[0050] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A multifunctional oscillating fan, comprising an oscillating fan assembly, characterized in that: The oscillating fan assembly includes a lifting support column, a fan housing installed above the lifting support column, and a front end cover installed on the front end surface of the fan housing, a fan motor is arranged inside the fan housing, the output shaft of the fan motor is connected to a fan blade shaft cylinder having a plurality of fan blades, a shock-absorbing and noise-reducing component is arranged at one end of the fan blade shaft cylinder facing the front end cover, the shock-absorbing and noise-reducing component includes two air spring buffers embedded in the fan blade shaft cylinder back to back, a support positioning shaft installed between the free end of the fan blade shaft cylinder and the rotatably connected front end cover, and silicone shock-absorbing and buffer sleeves respectively sleeved on the outer walls of the circumferential sides of both ends of the support positioning shaft.

2. The multifunctional oscillating fan according to claim 1, characterized in that: The inner cavity of one end of the fan shaft cylinder member close to the front end cover is symmetrically divided into two separately arranged shock-absorbing buffer chambers by a fixed partition; The fixed partition is welded in the inner cavity of the fan blade shaft cylinder.

3. The multifunctional oscillating fan according to claim 2, characterized in that: The two air spring buffers are symmetrically mounted on the outer walls of the fixed partition plate in a back-to-back manner, and the back-to-back ends of the two air spring buffers are fixedly connected with an arc-shaped support plate; The arc-shaped curved outer wall of each arc-shaped support plate elastically abuts against the inner wall of the shock-absorbing buffer chamber.

4. The multifunctional oscillating fan according to claim 3, characterized in that: Two clamping holes are symmetrically provided on the outer wall of the fan blade shaft cylinder outside the shock-absorbing buffer chamber, and the outer wall of each arc-shaped support plate is symmetrically and integrally connected with two clamping joints for being inserted into the clamping holes.

5. The multifunctional oscillating fan according to claim 4, characterized in that: A detachable end cover is installed at one end of the fan shaft cylinder member facing away from the fan motor through a fixing bolt, and a first installation sleeve which is sleeved on the circumference of one end of the supporting positioning shaft is welded to the outer wall of the detachable end cover.

6. The multifunctional oscillating fan according to claim 5, characterized in that: A bearing seat is welded at the center of the inner wall of the front end cover, and a sealed bearing connected to the supporting positioning shaft is interference-fitted in the bearing seat.

7. The multifunctional oscillating fan according to claim 6, characterized in that: A second mounting sleeve is welded to the outer wall of the bearing seat and is sleeved on the circumference of the other end of the supporting positioning shaft. The two silicone shock-absorbing and buffering sleeves are respectively embedded in the first mounting sleeve and the second mounting sleeve to provide shock-absorbing for the supporting positioning shaft.

8. The multifunctional oscillating fan according to claim 7, characterized in that: The inner wall of the detachable end cover is integrally formed with a sealing inner cover, and the sealing inner cover is sealingly fitted in the inner cavity of the fan blade shaft cylinder.

9. The multifunctional oscillating fan according to claim 8, characterized in that: The bottom end of the lifting support column is fixedly connected with a supporting base plate, and the bottom surface of the back of the fan housing is provided with an oscillating motor housing.

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