Head assembly, fan

Abstract

The present invention relates to the technical field of household appliances, and in particular to a head assembly and a fan. A head assembly includes: a first air duct frame, on the circumference of which an air outlet is arranged; a windshield, movably arranged at the first air duct frame; and a driving assembly, wherein the windshield is under the action of the driving assembly and has a first state of extending into the first air duct frame to close the air outlet and a second state of detaching from the first air duct frame to open the air outlet. A windshield is arranged in the head assembly of the present invention, and the windshield can realize the opening and closing of the air outlet arranged on the circumference of the first air duct frame under the action of the driving assembly. When the user does not need circumferential air outlet, the windshield can realize the closing of the air outlet under the action of the driving assembly, thereby effectively preventing foreign objects such as dust from the outside from entering the fan.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a head assembly and a fan. Background Art

[0002] Traditional fans have a relatively simple air outlet mode, and most of them are directed to a single area. In order to increase the air outlet range, a shaking head assembly is added between the head assembly and the base of the fan, and the head assembly rotates circumferentially around the base to increase the air outlet range.

[0003] However, the shaking head method generally cannot achieve a 360-degree shaking head function in the circumferential direction, and the shaking angle is limited. In the prior art, a circumferential air outlet flow channel is constructed in the head assembly, and a circumferential air outlet grille is arranged on the head assembly to communicate with the circumferential air outlet flow channel, so as to achieve the fan's 360-degree circumferential air outlet function.

[0004] However, the provision of the circumferential air outlet grille increases the overall air outlet area of ​​the fan, causing foreign matter such as dust from the outside to enter the fan more easily. The entry of foreign matter increases the probability of malfunction of components such as the blower in the fan. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the setting of the circumferential air outlet grille of the fan easily causes foreign matter such as dust to enter the inside of the fan, thereby providing a head assembly and a fan.

[0006] In order to solve the above problems, the present invention provides a head assembly including: a first air duct frame, on the circumferential surface of which is provided with an air outlet; a wind shield member movably arranged at the first air duct frame; and a driving assembly, wherein the wind shield member is acted upon by the driving assembly to have a first state of extending into the first air duct frame to close the air outlet and a second state of detaching from the first air duct frame to open the air outlet.

[0007] Optionally, the wind shield comprises:

[0008] The wind shield is annular, and in the first state, the outer peripheral wall of the wind shield is arranged close to the inner peripheral wall of the first air duct frame;

[0009] The driven part is arranged on the wind shielding part and connected with the driving assembly.

[0010] Optionally, the driven portion is arranged on a peripheral surface of the wind shielding portion.

[0011] Optionally, the driven portion is configured as a rack disposed along a height direction of the wind shielding portion.

[0012] Optionally, the rack is arranged to protrude from the outer peripheral surface of the wind shielding portion.

[0013] Optionally, it further includes a second air duct frame connected to the lower end of the first air duct frame, and in the second state, the wind shielding member is accommodated in the second air duct frame.

[0014] Optionally, the wind shield is movably arranged on the second air duct frame.

[0015] Optionally, a connecting structure is provided between the wind shield and the second air duct frame, and the connecting structure includes a sliding block and a first sliding groove that cooperate with each other, one of which is formed at the lower end of the wind shield and the other is formed at the upper end of the second air duct frame.

[0016] Optionally, a plurality of the first slide grooves are arranged at equal intervals along the circumferential direction on the circumferential surface of the upper frame wall of the second air duct frame body, and the notches of the first slide grooves are connected to the upper end surface of the second air duct frame body.

[0017] Optionally, the sliding blocks are arranged to protrude from the outer peripheral surface of the wind shield portion at equal intervals along the circumferential direction.

[0018] Optionally, the driven part is provided on at least one of the sliding blocks.

[0019] Optionally, a supporting frame is further included, two axial ends of which are respectively connected to the lower end of the first air duct frame and the upper end of the second air duct frame, and the wind shielding part is suitable for being nested in the supporting frame.

[0020] Optionally, a second slide groove corresponding to the first slide groove is arranged at the lower end of the frame wall of the supporting frame, and the second slide groove is connected to the first slide groove.

[0021] Optionally, a plurality of guide plates are provided at intervals along the circumference of the upper end surface of the support frame, and when the second state changes to the first state, the guide plates restrict the radial deviation of the wind shielding part.

[0022] Optionally, the driving assembly comprises:

[0023] A driving motor is arranged in the second air duct frame;

[0024] A driving gear is arranged on the motor shaft of the driving motor and meshes with the rack.

[0025] The present invention also provides a fan, comprising: a head assembly as described in any one of the above items; and a base, wherein the head assembly is arranged on the base.

[0026] The technical solution of the present invention has the following advantages:

[0027] 1. The head assembly in the present invention includes: a first air duct frame, on the circumferential surface of which is provided with an air outlet; a wind shield, movably provided at the first air duct frame; a driving assembly, the wind shield, under the action of the driving assembly, has a first state in which it extends into the first air duct frame to close the air outlet and a second state in which it is separated from the first air duct frame to open the air outlet.

[0028] A wind shield is provided in the head assembly of the present invention, and the wind shield can realize opening and closing of the air outlet arranged on the peripheral surface of the first air duct frame under the action of the driving assembly. When the user does not need circumferential air outlet, the wind shield can realize closing of the air outlet under the action of the driving assembly, thereby effectively preventing foreign matter such as dust from the outside from entering the inside of the fan.

[0029] 2. The windshield member in the head assembly of the present invention includes: a windshield portion, which is annular, and in a first state, the outer peripheral wall of the windshield portion is arranged close to the inner peripheral wall of the first air duct frame; a driven portion, which is arranged on the windshield portion and connected to the driving assembly, and the outer peripheral wall of the windshield portion is arranged close to the inner peripheral wall of the first air duct frame, so as to achieve the outer peripheral wall of the windshield portion and the inner peripheral wall of the first air duct frame as close as possible to ensure the sealing effect of the air outlet.

[0030] 3. In the head assembly of the present invention, a connecting structure is arranged between the wind shield and the second air duct frame, and the connecting structure includes a sliding block and a first sliding groove that cooperate with each other, one of which is formed at the lower end of the wind shield, and the other is formed at the upper end of the second air duct frame. The cooperation mode of the sliding block and the sliding groove has a simple structure and low processing cost.

[0031] 4. In the head assembly of the present invention, a plurality of first slide grooves are arranged at equal intervals along the circumferential direction on the circumferential surface of the upper frame wall of the second air duct frame, and the notches of the first slide grooves are connected to the upper end surface of the second air duct frame. The first slide grooves arranged at equal intervals ensure the uniformity of the force during the lifting and lowering process of the wind shield, and are not prone to deflection. The notch of the first slide groove is connected to the upper end surface of the second air duct frame to ensure that the slider can be directly installed into the first slide groove from the notch, reducing the installation difficulty between the slide groove and the slider, thereby improving the assembly efficiency.

[0032] 5. In the present invention, at least one slider in the head assembly is provided with a driven part, and the slider and the driven part are designed to be integrated, which simplifies the overall structure of the windshield component and enables the slider to have the functions of guiding lifting and driving at the same time.

[0033] 6. In the head assembly of the present invention, a second slide groove corresponding to the first slide groove is arranged at the lower end of the frame wall of the supporting frame body, and the second slide groove is connected with the first slide groove, thereby increasing the lifting stroke of the wind shield member and ensuring that the wind shield member can completely close the air outlet. In addition, the large stroke design can control the air outlet range of the circumferential air outlet by controlling the lifting height of the wind shield member.

[0034] 7. In the head assembly of the present invention, a plurality of guide plates are arranged at intervals along the circumference of the upper end surface of the support frame. When the second state changes to the first state, the guide plates restrict the radial deviation of the wind shield. The arrangement of the guide plates ensures the stability of the wind shield during the lifting process and reduces the problem of jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 An exploded view of the head assembly in Example 1 provided by the present invention;

[0037] Figure 2 A schematic structural diagram of the wind shield in the second state in Embodiment 1 provided by the present invention;

[0038] Figure 3 A schematic structural diagram of a windshield member in a first state in Embodiment 1 provided by the present invention;

[0039] Figure 4 A schematic structural diagram of a windshield member in Embodiment 1 provided by the present invention;

[0040] Figure 5 A schematic structural diagram of a support frame in Embodiment 1 provided by the present invention;

[0041] Figure 6 This is a schematic structural diagram of the second air duct frame in Example 1 provided by the present invention.

[0042] Description of reference numerals:

[0043] 1-first air duct frame; 11-air outlet;

[0044] 2-windshield; 21-windshield portion; 22-driven portion; 23-slider;

[0045] 3-second air duct frame; 31-first slide slot;

[0046] 4-support frame; 41-second slide slot; 42-guide plate;

[0047] 5-Blower assembly. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] Example 1

[0053] like Figures 1 to 6 As shown, a head assembly provided in this embodiment includes: a first air duct frame 1, on the circumferential surface of which is provided with an air outlet 11; a wind shield 2, movably provided at the first air duct frame 1; and a driving assembly, wherein the wind shield 2 is acted upon by the driving assembly to have a first state in which it extends into the first air duct frame 1 to close the air outlet 11 and a second state in which it is detached from the first air duct frame 1 to open the air outlet 11.

[0054] The head assembly in this embodiment is a head assembly on an air circulation fan. As a variation, it can also be a head structure of a table fan, a floor fan or other fan.

[0055] like Figure 1As shown, the head assembly in this embodiment includes a lower shell structure, in which a fan assembly 5 is installed, and the fan assembly 5 includes a fan fixed on the shell and an impeller installed on the fan shaft. A grid-shaped air inlet structure is processed at the lower end of the shell. When the fan assembly is working, the external airflow enters the first air duct frame 1 through the air inlet structure. Under the action of the air guide plate, the airflow flowing along the axial direction of the impeller is changed in direction and flows out from the air outlet 11 on the peripheral surface of the first air outlet frame 1 to the outside, thereby realizing the circumferential air outlet of the fan.

[0056] In this embodiment, a windshield 2 is provided inside the head assembly. The windshield 2 can be directly provided on the first air duct frame 1, and can also be provided on the shell at the air inlet end of the first air frame 1 as a deformable windshield 2. Its implementation position can be adaptively adjusted according to the design needs to simplify the structural design. What needs to be satisfied is that the windshield 2 is movably provided at the first air duct frame 1, so that the windshield 2 can realize the opening and closing of the air outlet provided on the peripheral surface of the first air duct frame 1 under the action of the driving component. When the user does not need circumferential air discharge, the windshield 2 can realize the closing of the air outlet under the action of the driving component, thereby effectively preventing foreign matter such as dust from the outside from entering the inside of the fan.

[0057] On the basis of the above-mentioned embodiment, as a further limitation, the wind shield member 2 includes: a wind shield portion 21, which is annular, specifically a cylindrical structure with openings at both ends, so that the interior of the wind shield portion 21 is constructed into an air duct, and in the first state, the outer peripheral wall of the wind shield portion 21 is close to the inner peripheral wall of the first air duct frame 1, so as to achieve the outer peripheral wall of the wind shield portion 21 and the inner peripheral wall of the first air duct frame 1 as close as possible to ensure the sealing effect of the air outlet 11.

[0058] Further, the windshield 2 also includes: a driven part 22, which is arranged on the windshield 21 and connected to the driving assembly to facilitate the driving assembly to drive the windshield 2 and realize the lifting function of the windshield 2. In a specific embodiment, the driven part 22 is constructed as a rack arranged along the height direction of the windshield 21. The way of lifting the rack is simple and easy to operate, and the rack is protruding from the outer peripheral surface of the windshield 21 to facilitate the assembly of the rack. As a deformation of the position of the driven part, it can also be arranged on the inner peripheral surface of the windshield 21, or implemented on the end surface of the windshield 21. As a deformation, the above-mentioned rack can also be embedded in the peripheral wall of the windshield 21 in the form of an internal rack to make the structure more compact. As a deformation, the specific structure of the driven part in the above is not limited to the rack. According to the different driving modes of the driving assembly, it can also be a top pressing convex block, such as when a cam rotation lifting mode is adopted; it can also be a pulley structure, such as when a belt transmission mode is adopted; it can also be a screw hole structure, such as when a screw slider lifting structure is adopted.

[0059] On the basis of the above embodiment, as a further limitation, a second air duct frame 3 connected to the lower end of the first air duct frame 1 may be further included, and in the second state, the wind shield 2 is accommodated in the second air duct frame 3. The external airflow enters the second air duct frame 3 under the action of the fan, and then flows into the first air duct frame 1. In the second state, the wind shield 2 descends into the second air duct frame 3, effectively utilizing the air duct space of the second air duct frame 3, reducing the need for additional space when the wind shield 2 descends, thereby ensuring the compactness of the head assembly structure.

[0060] On the basis of the above embodiment, as a further limitation, the windshield 2 is movably arranged on the second air duct frame 3, and the movably arranged manner is that the windshield 2 can perform lifting and lowering movements in the airflow direction of the second air duct frame 3. In order to realize the connection between the windshield 2 and the second air duct frame 3, a connecting structure is arranged between the windshield 2 and the second air duct frame 3, and the connecting structure includes a sliding block 23 and a first sliding groove 31 that cooperate with each other, and the sliding block 23 performs reciprocating movement in the first sliding groove 31, and one of the sliding block 23 and the first sliding groove 31 is formed at the lower end of the windshield 2, and the other is formed at the upper end of the second air duct frame 3. In one specific embodiment, four first slide grooves 31 are arranged at equal intervals along the circumference on the circumference of the upper frame wall of the second air duct frame 3. The slots of the first slide grooves are connected to the upper end surface of the second air duct frame 3. The first slide grooves 31 arranged at equal intervals ensure the uniformity of the force during the lifting and lowering of the wind shield 2, and are not prone to deflection. The slots of the first slide grooves 31 are connected to the upper end surface of the second air duct frame 3 to ensure that the slider can be directly installed into the first slide groove 31 from the slots, reducing the difficulty of installation between the slide grooves and sliders, thereby improving assembly efficiency. The sliders 23 are arranged at equal intervals along the circumference to protrude from the outer circumference of the wind shield 21, such as Figure 4 As described above, a clamp is provided at one end of the slider 23 away from the outer peripheral surface of the wind shield 21 to prevent it from escaping from the first slide groove 31. Of course, the number of the first slide groove 31 or the slider 23 can be adaptively adjusted according to actual needs.

[0061] On the basis of the above embodiment, as a further limitation, a driven portion 22 is provided on at least one slider 23. As a specific implementation, a rack structure can be directly formed on one side surface of the slider 23. This method simplifies the overall structure of the wind shield and enables the slider 23 to have the functions of guiding lifting and driving at the same time.

[0062] On the basis of the above embodiment, as a further limitation, it can also include a support frame 4, whose two axial ends are respectively connected to the lower end of the first air duct frame 1 and the upper end of the second air duct frame 3, and the hollow position of the support frame 4 is also used as an air duct, and the wind shield part 21 is nested in the support frame 4. In the first state, the wind shield part 21 protrudes from the upper end surface of the support frame 4 and enters into the first air duct frame, thereby realizing the closing function of the air outlet.

[0063] On the basis of the above embodiment, as a further limitation, the lower end of the frame wall of the support frame 4 is provided with a second slide slot 41 corresponding to the first slide slot 31, and the second slide slot 41 is connected to the first slide slot 31. The lifting stroke of the wind shield is increased to ensure that the wind shield can completely close the air outlet, and the large stroke design can control the air outlet range of the circumferential air outlet by controlling the height of the wind shield.

[0064] On the basis of the above embodiment, as a further limitation, a plurality of guide pieces 42 are arranged at intervals along the circumference of the upper end surface of the support frame 4, and when the second state changes to the first state, the guide pieces 42 restrict the radial deviation of the wind shield 21. The arrangement of the guide pieces 42 ensures the stability of the wind shield during the lifting process and reduces the problem of jamming.

[0065] On the basis of the above embodiments, as a further limitation, the driving component includes: a driving motor, which is arranged in the second air duct frame 3; a driving gear, which is arranged on the motor shaft of the driving motor and meshes with the rack. When the driving motor is working, the driving gear rotates. Since the driving motor is fixed in the second air duct frame 3, the rack will move up and down driven by the gear, thereby driving the wind shield to move in the first slide groove and the second slide groove.

[0066] Example 2

[0067] The present embodiment provides a fan, comprising the head assembly and a base in the above embodiment. The head assembly is mounted on the base and has all the technical advantages of the above head assembly, which will not be described one by one here.

[0068] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A head assembly, characterized in that: include: A first air duct frame (1), with an air outlet (11) arranged on its peripheral surface; A wind shield (2) movably arranged on the first air duct frame (1); a driving assembly, wherein the wind shield (2) is activated by the driving assembly to have a first state of extending into the first air duct frame (1) to close the air outlet (11) and a second state of detaching from the first air duct frame (1) to open the air outlet (11); The wind shield (2) comprises: The wind shield (21) is annular, and in the first state, the outer peripheral wall of the wind shield is arranged close to the inner peripheral wall of the first air duct frame (1); A driven part (22) is arranged on the wind shielding part (21) and is connected to the driving component; It also includes a second air duct frame (3) connected to the lower end of the first air duct frame (1); It also comprises a supporting frame (4), two axial ends of which are respectively connected to the lower end of the first air duct frame (1) and the upper end of the second air duct frame (3), and the wind shielding portion (21) is suitable for being nested in the supporting frame (4); A plurality of guide pieces (42) are arranged at intervals along the circumference of the upper end surface of the support frame (4); when the second state changes to the first state, the guide pieces (42) restrict radial deviation of the wind shield (21).

2. The head assembly according to claim 1, characterized in that: The driven portion (22) is arranged on the peripheral surface of the wind shielding portion (21).

3. The head assembly according to claim 1, characterized in that: The driven part (22) is configured as a rack arranged along the height direction of the wind shielding part (21).

4. The head assembly according to claim 3, characterized in that: The rack is arranged to protrude from the outer peripheral surface of the wind shielding portion (21).

5. The head assembly according to claim 3, characterized in that: In the second state, the wind shield (2) is accommodated in the second air duct frame (3).

6. The head assembly according to claim 5, characterized in that: The wind shield (2) is movably arranged on the second air duct frame (3).

7. The head assembly according to claim 6, characterized in that: A connection structure is provided between the wind shield (2) and the second air duct frame (3), the connection structure comprising a sliding block (23) and a first sliding groove (31) which cooperate with each other, one of which is formed at the lower end of the wind shield (2) and the other is formed at the upper end of the second air duct frame (3).

8. The head assembly according to claim 7, characterized in that: A plurality of the first slide grooves (31) are arranged at equal intervals along the circumferential direction on the circumferential surface of the upper frame wall of the second air duct frame (3), and the notches of the first slide grooves are connected to the upper end surface of the second air duct frame (3).

9. The head assembly according to claim 7, characterized in that: The sliding blocks (23) are arranged to protrude from the outer peripheral surface of the wind shielding portion (21) at equal intervals along the circumferential direction.

10. The head assembly according to claim 9, characterized in that: The driven part (22) is arranged on at least one of the sliding blocks (23).

11. The head assembly according to claim 7, characterized in that: A second slide groove (41) corresponding to the first slide groove (31) is arranged at the lower end of the frame wall of the support frame (4), and the second slide groove (41) is communicated with the first slide groove (31).

12. The head assembly according to claim 5, characterized in that: The driving assembly comprises: a driving motor, which is arranged in the second air duct frame; A driving gear is arranged on the motor shaft of the driving motor and meshes with the rack.

13. A fan, characterized in that: include: The head assembly according to any one of claims 1 to 12; and a base, on which the head assembly is arranged.

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