Fan base and fan

Abstract

The invention relates to the technical field of household appliances, and discloses a fan base and a fan. The fan base comprises a chassis provided with a wire inlet hole; the bottom cover is buckled on the chassis; the power line limiting structure comprises a limiting surrounding rib arranged on the chassis, a wire outlet hole is formed in the limiting surrounding rib, and a limiting space for limiting a power line is defined by the limiting surrounding rib; the power line limiting structure further comprises a pressing surrounding rib, when the bottom cover and the base plate are buckled, the pressing surrounding rib bends and presses the power line into the limiting space, and the pressing surrounding rib can restrain the power line in the line connecting direction of the line inlet hole and the line outlet hole. After the base and the bottom cover are buckled, the pressing surrounding ribs and the limiting surrounding ribs can form a three-dimensional limiting space for restraining and limiting the power line in multiple dimensions, the movement allowance of the power line can be well controlled, the power line can be effectively prevented from being pushed into the base in the up-down direction, the left-right direction and the like, and the power line is prevented from being pushed into the base in the up-down direction, the left-right direction and the like. And the forced requirement of safety regulation on push-in resistance of the power line is met.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and in particular to a fan base and a fan. Background Art

[0002] Existing power cord fastening methods for electrical products such as electric fans often use a single clip or tape wrapping. This type of structure can easily cause the power cord to shift due to improper operation during assembly, and it is difficult to meet the mandatory safety regulations for power cord resistance. Some products restrict the movement of the power cord by adding raised structures on the chassis and bottom cover. However, due to loose structures or excessive gaps, the power cord may still be squeezed into the appliance under external forces, posing a risk of leakage or short circuit. Some products use two screws to tighten the power cord at the power cord port. Although this solution can meet the mandatory requirements of safety regulations, it requires more steps in the production and assembly process, and the presence of two screws will also increase the cost of the entire device. Summary of the Invention

[0003] In view of this, the present invention provides a fan base and a fan to solve the problems in the prior art of complex power cord fixing structure, high cost, and the power cord being easily squeezed and pushed into the interior of the appliance.

[0004] In a first aspect, the present invention provides a fan base, comprising:

[0005] Chassis, with wire entry holes on the side;

[0006] Bottom cover, snapped onto the chassis;

[0007] The power line limiting structure includes a limiting reinforcement provided on the chassis corresponding to the wire inlet hole, the limiting reinforcement is provided with a wire outlet hole, and the limiting reinforcement encloses a limiting space for limiting the power line;

[0008] The power cord limiting structure also includes a pressed rib corresponding to the limiting rib set on the bottom cover. When the bottom cover is buckled with the chassis, the pressed rib bends the power cord into the limiting space and can constrain the power cord in the direction of the connection between the wire inlet and wire outlet holes.

[0009] Beneficial effect: The limiting reinforcement can enclose and form a limiting space for accommodating and limiting the power cord in the first direction. During assembly, the power cord can be placed in the limiting space of the limiting reinforcement first to achieve pre-positioning of the power cord and improve assembly efficiency. When the bottom cover is buckled onto the chassis, the pressing reinforcement can bend the power cord in the second direction and press it into the limiting space, so that the power cord is bent in a curved line, thereby constraining the power cord in the direction of the line connecting the wire entry hole and the wire outlet hole. The buckled pressing reinforcement and the limiting reinforcement can form a three-dimensional limiting space that constrains the power cord in multiple dimensions, which can not only well control the movable margin of the power cord, but also effectively prevent the power cord from being pushed into the base in the up, down, left, right and other directions, meeting the mandatory requirements of safety regulations for the power cord to resist being pushed into. Compared with the existing solution of tightening and fixing the power cord with two screws, the structure is simpler, the cost is lower, the process is simplified, and the production efficiency is higher. It effectively solves the problems of the existing power cord fixing method having a complex structure, high cost, and the power cord being easily squeezed and pushed into the interior of the appliance.

[0010] In an optional embodiment, the fan base has an assembled state in which the bottom cover is snapped onto the chassis;

[0011] When the fan base is in an assembled state, the pressing point of the pressing reinforcement on the power cord is located below the line connecting the wire inlet hole and the wire outlet hole, so as to limit the displacement of the power cord in the direction of the line connecting the wire inlet hole and the wire outlet hole.

[0012] Beneficial effect: The wire outlet hole adopts a groove structure set on the edge of the limiting reinforcement, which makes it convenient for the power cord to be installed into or taken out of the wire outlet hole, and the distance between the two opposite side walls of the wire clamping groove is smaller than the outer diameter of the power cord. The wire clamping groove and the power cord have an interference fit, so that the wire outlet hole can clamp the power cord to prevent the power cord from loosening, further increase the pulling force and stability of the power cord, and reduce the risk of the power cord being pulled out or pushed into the base.

[0013] In an optional embodiment, the wire outlet hole is a wire clamping groove provided on the edge of the limiting rib, and the wire clamping groove is interference fit with the power cord.

[0014] Beneficial effect: The wire outlet hole adopts a groove structure set on the edge of the limiting reinforcement, which makes it convenient for the power cord to be installed into or taken out of the wire outlet hole, and the interference fit between the wire clamping groove and the power cord enables the wire outlet hole to clamp the power cord, further increasing the pulling force and stability of the power cord, preventing the power cord from loosening, and reducing the risk of the power cord being pulled out or pushed into the base.

[0015] In an optional embodiment, the outer diameter of the power cord is D, the width of the wire clamping groove is W, and 0.7D≤W≤0.95D.

[0016] Beneficial effect: The width of the wire clamping groove is 0.7 to 0.95 times the outer diameter of the power cord, which can effectively ensure that the interference between the wire clamping groove and the power cord is between 0.2 mm and 1 mm. The width of the wire clamping groove and the outer diameter of the power cord are designed by adopting the above dimensions, which can not only ensure effective constraint on the power cord, but also avoid the problem that the wire clamping groove is too small, which makes it inconvenient to install and remove the power cord, and is easy to squeeze the power cord.

[0017] In an optional embodiment, the depth of the wire clamping groove is D1, and 1.2D≤D1≤2D.

[0018] Beneficial effect: The depth of the wire clamping groove is 1.2 to 2 times the outer diameter of the power cord. With this design, the wire clamping groove can completely accommodate the power cord, avoiding the problem that the exposed power cord is easily damaged by friction with other components, thereby increasing the service life of the power cord and reducing safety hazards.

[0019] In an optional embodiment, at least parts of the two opposite side walls of the thread clamping groove are configured as inclined first guide surfaces.

[0020] Beneficial effect: The first guide surface provided on the inner wall of the wire clamping groove plays a guiding role, making it easier for the power cord to slide into position.

[0021] In an optional embodiment, a first buckling edge is provided on the outer periphery of the chassis, the wire inlet hole is opened on the first buckling edge, and the wire outlet hole is arranged opposite to the wire inlet hole;

[0022] The limiting rib is U-shaped, the opening side of the U-shaped limiting rib faces the wire entry hole, and an assembly gap for the bottom cover to be buckled and installed is reserved between the opening end and the first buckling edge.

[0023] Beneficial Effects: The outlet and inlet holes are positioned opposite each other, preventing the power cord from being broken or damaged by repeated bending on a horizontal surface. The assembly gap between the open end of the limiting reinforcement and the first snapping edge provides space for the bottom cover to be installed, facilitating its insertion. The pressing reinforcement interlocks with the limiting reinforcement, ensuring that the power cord ultimately forms a curved routing.

[0024] In an optional embodiment, a second buckling edge is provided on the bottom cover, and a relief opening is provided on the second buckling edge corresponding to the wire inlet hole;

[0025] The pressed reinforcement is connected around the avoidance opening, and the pressed reinforcement includes a pressing line wall, and the height of the pressing line wall is greater than the height of the second buckling edge.

[0026] Beneficial effect: By setting a avoidance opening corresponding to the wire entry hole on the second buckling edge, after the bottom cover and the chassis are buckled together, the power cord enters the three-dimensional limited space formed by the pressing reinforcement and the limiting reinforcement through the wire entry hole and the avoidance opening in sequence, and by adopting a design in which the height of the wire pressing wall is greater than the height of the second buckling edge, it is ensured that the wire pressing wall can press the power cord in the limited space to form a curved route, thereby increasing the pulling force of the power cord and reducing the possibility of the power cord being pulled out or pushed into the base.

[0027] In an optional embodiment, pressing the reinforcement further comprises:

[0028] Two connecting side walls, the two connecting side walls are connected between the two sides of the pressing wall and the second buckling edge;

[0029] Assume that the outer diameter of the power line is D and the distance between the two connecting side walls is d, where 1.3D≥d≥D.

[0030] Beneficial effect: The distance between the two connecting side walls and the width of the power cord are designed within the size range of 1.3D≥d≥D, so that the width between the two connecting side walls is close to the width of the power cord, thereby limiting the left and right movement space of the power cord, and preventing the power cord from having a large range of movement space within the pressed reinforcement, thereby initially limiting the movement space and further restricting it at the limit space and the wire outlet hole.

[0031] In an optional embodiment, the shape of the pressed reinforcement matches the shape of the limiting reinforcement and the size is smaller than the limiting reinforcement;

[0032] When the bottom cover is buckled with the chassis, the pressed reinforcement is correspondingly buckled into the limiting reinforcement.

[0033] Beneficial effects: The shape of the pressed reinforcement is consistent with the shape of the limiting reinforcement, and the size of the pressed reinforcement is smaller than the size of the limiting reinforcement. When the bottom cover is buckled with the chassis, the pressed reinforcement is correspondingly buckled into the limiting reinforcement, thereby forming a three-dimensional limiting space. The power cord limiting structure completely eliminates the possibility of the power cord being pushed in in all directions by adopting the above-mentioned surrounding ribs and three-dimensional limiting cavity design, and can control the power cord activity margin within the range of ±0.5mm, ensuring structural stability and reliability.

[0034] In an optional embodiment, a first reinforcing rib is provided between the limiting rib and the chassis.

[0035] Beneficial effect: By setting the first reinforcing rib, the structural strength of the limiting reinforcement can be increased, avoiding the problem of insufficient strength of the limiting reinforcement when the power cord is pulled or pushed in, resulting in breakage or deformation.

[0036] In an optional embodiment, a second reinforcing rib is provided between the pressed rib and the bottom cover.

[0037] Beneficial effect: By setting the second reinforcing rib, the structural strength of the pressing reinforcement can be increased, avoiding the problem of breakage or deformation caused by insufficient strength of the pressing reinforcement when the power cord is pulled or pushed.

[0038] In a second aspect, the present invention further provides a fan comprising a fan base according to any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a schematic structural diagram of a base in an embodiment of the present invention;

[0041] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0042] Figure 3 This is a schematic structural diagram of the bottom cover in an embodiment of the present invention;

[0043] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0044] Figure 5 This is a transverse cross-sectional view of the bottom cover and the chassis after assembly in an embodiment of the present invention;

[0045] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0046] Figure 7 A longitudinal cross-sectional view of the assembled base and support column in an embodiment of the present invention;

[0047] Figure 8 for Figure 7 An enlarged view of the structure at the center cable entry hole (with an illustration of the S-shaped curve routing of the power cable).

[0048] Description of reference numerals:

[0049] 10. Fan base;

[0050] 11. Chassis; 110. Wire inlet hole; 111. Position-limiting rib; 1110. Position-limiting space; 1111. Wire outlet hole; 1112. First guide surface; 1113. Second guide surface; 112. First buckling edge; 113. First reinforcing rib;

[0051] 12. Bottom cover; 121. Pressed ribs; 1211. Pressed wall; 1212. Connecting side walls; 12120. Bevel; 122. Second buckling edge; 1220. Avoidance; 123. Second reinforcing rib; 20. Support column. DETAILED DESCRIPTION

[0052] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0055] 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.

[0056] Existing power cord fastening systems for electrical appliances like electric fans often rely on single clips or tape wrapping. These structures can easily cause the power cord to shift during assembly due to improper operation and fail to meet safety regulations for power cord push-in resistance. Some products restrict power cord movement by adding raised structures on the chassis and bottom cover. However, due to loose structures or excessive gaps, the power cord can still be squeezed into the appliance under external forces, posing a risk of leakage or short circuit.

[0057] The root cause of these issues lies in the lack of systematic restrictions on the multi-dimensional movement of the power cord and the lack of a pre-fixing mechanism during assembly, resulting in the final push-in resistance failing standard testing. Some products even use two screws to secure the power cord between the chassis and the bottom cover. While this solution meets mandatory safety regulations, it requires more steps during production and assembly, resulting in low production efficiency. Furthermore, the presence of two screws increases the overall cost of the device.

[0058] Therefore, an effective and simple wire harness restraint structure is needed to meet the mandatory safety regulations on the anti-push-in resistance of power cords.

[0059] The following combination Figures 1 to 8 , describing embodiments of the present invention.

[0060] According to an embodiment of the present invention, on the one hand, the present invention provides a fan base 10, comprising: a chassis 11, a bottom cover 12, and a power cord limiting structure, wherein a wire entry hole 110 is provided on the side of the chassis 11, and the bottom cover 12 is buckled on the chassis 11, and the power cord limiting structure comprises a limiting rib 111 arranged on the chassis 11, and a wire exit hole 1111 is provided on the limiting rib 111, and the limiting rib 111 encloses a limiting space 1110 for accommodating and limiting the power cord; the power cord limiting structure also comprises a pressed rib 121 arranged on the bottom cover 12 corresponding to the limiting rib 111, and when the bottom cover 12 is buckled with the chassis 11, the pressed rib 121 bends the power cord and presses it into the limiting space 1110, and can constrain the power cord in the direction of the line connecting the wire entry hole 110 and the wire exit hole 1111.

[0061] In the above embodiment, the limiting ribs 111 can enclose and form a limiting space 1110 for accommodating and limiting the power cord in the first direction. During assembly, the power cord can be placed in the limiting space 1110 of the limiting ribs 111 first to achieve pre-positioning of the power cord and improve assembly efficiency. When the bottom cover 12 is buckled onto the chassis 11, the pressing ribs 121 can bend the power cord in the second direction and press it into the limiting space 1110, so that the power cord is bent in a curved line, thereby constraining the power cord in the direction of the line connecting the wire entry hole 110 and the wire outlet hole 1111. The pressed ribs 121 and the limiting ribs 111 after buckling can form a three-dimensional limiting space 1110 that constrains the power cord in multiple dimensions. Not only can the movable margin of the power cord be well controlled, but also the power cord can be effectively prevented from being pushed into the base in the upper, lower, left, and right directions, meeting the mandatory requirements of safety regulations for the power cord to resist being pushed into. Compared with the existing solution of tightening and fixing the power cord with two screws, the structure is simpler, the cost is lower, the process is simplified, and the production efficiency is higher. It effectively solves the problems of the existing power cord fixing method in the art, which is complex in structure, high in cost, and the power cord is easily squeezed and pushed into the interior of the appliance.

[0062] Specifically, the first direction and the second direction are different from the direction of the line connecting the wire inlet hole 110 and the wire outlet hole 1111, and the limiting rib 111 is provided at the wire inlet hole 110. Preferably, the first direction is perpendicular to the second direction. More preferably, the first direction is the radial direction of the base, and the second direction is the axial direction of the base, or, when the power cord is flat, the first direction can also be said to be the width direction of the power cord, and the limiting rib 111 can limit and constrain the power cord in the width direction of the power cord, and the second direction is the thickness direction of the power cord, and the pressing rib 121 can limit and constrain the power cord in the thickness direction of the power cord. The pressing rib 121 squeezes the power cord into the limiting space 1110, causing the power cord to bend, and presses the power cord into the limiting space 1110 in an S-shaped curve, so that the power cord is curved, which can effectively prevent the power cord from being pulled out directly, increase the pulling force of the power cord, and ensure that the power cord will not easily fall out when pushed in.

[0063] In some embodiments, the fan base 10 has an assembled state in which the bottom cover 12 is buckled onto the chassis 11; when the fan base 10 is in the assembled state, the pressing point Q of the pressing rib 121 on the power cord is located below the line connecting the wire inlet hole 110 and the wire outlet hole 1111, so as to limit the displacement of the power cord in the direction of the line connecting the wire inlet hole 110 and the wire outlet hole 1111.

[0064] Combine Figure 7 and Figure 8 As shown, when the bottom cover 12 is buckled onto the chassis 11, the pressing ribs 121 are correspondingly buckled into the limiting ribs 111, and the pressing point Q of the pressing ribs 121 on the power cord is located below the line connecting the wire inlet hole 110 and the wire outlet hole 1111, thereby increasing the pulling force of the power cord and ensuring that the power cord eventually forms a curved route. The curved route can effectively prevent the power cord from being directly pulled out or easily pushed into the base.

[0065] It should be noted that, in this embodiment, Figure 7 and Figure 8 As shown, the pressing point Q of the pressing rib 121 on the power cord is located below the line connecting the wire inlet hole 110 and the wire outlet hole 1111, which is not absolute but relative. When the fan base 10 is in the assembled state, it is located below the line connecting the wire inlet hole 110 and the wire outlet hole 1111. When the fan base 10 is in use, that is, when it is assembled and used normally, the bottom cover 12 is located below the chassis 11. At this time, the pressing point Q of the pressing rib 121 on the power cord is located above the line connecting the wire inlet hole 110 and the wire outlet hole 1111.

[0066] In other words, the pressing point Q of the pressing rib 121 on the power cord, the wire inlet 110, and the wire outlet 1111 are arranged in a triangle, with the pressing point Q located between the wire inlet 110 and the wire outlet 1111. In other words, when the fan base 10 is in the assembled state with the bottom cover 12 fastened to the chassis 11, the pressing point Q of the pressing rib 121 on the power cord is lower than the wire outlet 1111.

[0067] In some embodiments, the wire outlet hole 1111 is a wire clamping groove provided on the edge of the limiting rib 111 , and the wire clamping groove is interference fit with the power cord.

[0068] In the above embodiment, the wire outlet hole 1111 adopts a groove structure provided on the edge of the limiting rib 111, which facilitates the power cord to be installed into or taken out of the wire outlet hole 1111, and the interference fit between the wire clamping groove and the power cord enables the wire outlet hole 1111 to clamp the power cord, further increasing the pulling force and stability of the power cord, preventing the power cord from loosening, and reducing the risk of the power cord being pulled out or pushed into the base.

[0069] In some embodiments, the outer diameter of the power cord is D, the width of the wire clamping groove is W, and 0.7D≤W≤0.95D.

[0070] In the above embodiment, the width of the wire clamping groove is 0.7 to 0.95 times the outer diameter of the power cord, which can effectively ensure that the interference between the wire clamping groove and the power cord is between 0.2 mm and 1 mm. The width of the wire clamping groove and the outer diameter of the power cord are designed by adopting the above-mentioned dimensions, which can not only ensure effective constraints on the power cord, but also avoid the problem that the wire clamping groove is too small, which makes it inconvenient to install and remove the power cord, and easily squeezes the power cord.

[0071] In some embodiments, the depth of the wire clamping groove is D1, and 1.2D≤D1≤2D.

[0072] In the above embodiment, the depth of the wire clamping groove is 1.2 to 2 times the outer diameter of the power cord. With this design, the wire clamping groove can completely accommodate the power cord, avoiding the problem of the power cord being exposed and easily damaged by friction with other components, thereby increasing the service life of the power cord and reducing safety hazards.

[0073] It should be noted that the depth and width of the wire clamping groove in this embodiment are described using the example of a round power cord. When the power cord is a flat cable, the width of the wire clamping groove corresponds to 0.7 to 0.95 times the width of the power cord, and the depth of the wire clamping groove corresponds to 1.2 to 2 times the thickness of the power cord.

[0074] In some embodiments, at least part of the opposite side walls of the thread clamping groove are configured as inclined first guide surfaces 1112 .

[0075] In the above embodiment, the first guide surface 1112 provided on the inner wall of the wire clamping groove plays a guiding role, facilitating the power cord to slide into position.

[0076] Specifically, the two end corners of the wire clamping groove are configured as inclined first guide surfaces 1112. The distance between the two first guide surfaces 1112 gradually decreases as the power cord is inserted into the wire clamping groove. Optionally, the two end corners of the wire clamping groove are chamfered to form the first guide surfaces 1112. The opposing side walls of the wire clamping groove each include an inclined first guide surface 1112 and a straight wire clamping surface. The distance between the two wire clamping surfaces is constant, W, and 0.7D ≤ W ≤ 0.95D. The power cord is clamped between the two wire clamping surfaces.

[0077] Preferably, the inclination angle of the first guide surface 1112 is between 15° and 45°.

[0078] In some embodiments, a first snap-fit edge 112 is provided on the outer periphery of the chassis 11, the wire inlet hole 110 is opened on the first snap-fit edge 112, and the wire outlet hole 1111 is arranged opposite to the wire inlet hole 110; the limiting rib 111 is U-shaped, and the open side of the U-shaped limiting rib 111 faces the wire inlet hole 110, and an assembly gap is reserved between the open end and the first snap-fit edge 112 for the bottom cover 12 to be snapped and installed.

[0079] In the above embodiment, the outlet hole 1111 is positioned opposite the inlet hole 110 to prevent the power cord from being broken or damaged by repeated bending on a horizontal surface. The assembly gap reserved between the open end of the limiting rib 111 and the first snapping edge 112 provides space for the bottom cover 12 to be installed, facilitating its insertion. The pressing ribs 121 interlock with the limiting rib 111, ensuring that the power cord ultimately forms a curved routing.

[0080] Specifically, the wire entry hole 110 is a groove structure or notch provided on the first fastening edge 112. The width of the wire entry hole 110 is greater than the outer diameter of the power cord. The limiting rib 111 includes a first limiting sidewall provided opposite the wire entry hole 110 and two second limiting sidewalls connected to either side of the first limiting sidewall. A predetermined assembly gap is provided between the two second limiting sidewalls and the first fastening edge 112. The wire exit hole 1111 is a groove structure provided on the upper edge of the first limiting sidewall. One end of the two second limiting sidewalls is respectively connected to the first limiting sidewall, and the other end extends to a position with a predetermined assembly gap with the first fastening edges 112 on either side of the wire entry hole 110. The distance between the two second limiting sidewalls is greater than the width of the wire entry hole 110.

[0081] Preferably, the end surfaces of the two second limiting side walls away from the first limiting side wall are inclined surfaces. The upper inclined surfaces can serve as guides, allowing the bottom cover 12 to be snapped in more easily. Specifically, along the snapping direction of the bottom cover 12, the distance between the inclined surfaces and the first snapping edge 112 gradually decreases to a predetermined assembly gap.

[0082] In some embodiments, combined Figures 4 to 6 As shown, a second buckling edge 122 is provided on the bottom cover 12, and an avoidance opening 1220 is provided on the second buckling edge 122 corresponding to the wire entry hole 110, and the pressed rib 121 is connected around the avoidance opening 1220; the pressed rib 121 includes a wire pressing wall 1211, and the height of the wire pressing wall 1211 is greater than the height of the second buckling edge 122.

[0083] In the above embodiment, by providing the avoidance opening 1220 corresponding to the wire entry hole 110 on the second buckling edge 122, after the bottom cover 12 is buckled with the chassis 11, the power cord enters the three-dimensional limiting space 1110 formed by the pressing rib 121 and the limiting rib 111 through the wire entry hole 110 and the avoidance opening 1220 in sequence, and by adopting a design in which the height of the wire pressing wall 1211 is greater than the height of the second buckling edge 122, it is ensured that the wire pressing wall 1211 can press the power cord into a curved route in the limiting space 1110, thereby increasing the pulling force of the power cord and reducing the possibility of the power cord being pulled out or pushed into the base.

[0084] Specifically, the first buckling edge 112 and the second buckling edge 122 are both annular, the outer diameter of the second buckling edge 122 is smaller than the inner diameter of the first buckling edge 112, the wire pressing wall 1211 is arranged opposite to the avoidance opening 1220, the wire pressing wall 1211 is a horizontal rib pressed on the power cord, and the wire pressing wall 1211 intersects with the line connecting the wire inlet hole 110 and the wire outlet hole 1111. Preferably, the wire pressing wall 1211 is perpendicular to the line connecting the wire inlet hole 110 and the wire outlet hole 1111. The avoidance opening 1220 is a notch groove opened on the second buckling edge 122, the width of the notch groove is greater than the outer diameter of the power cord, so as to ensure that the power cord can smoothly enter the three-dimensional limiting space 1110 formed by the limiting rib 111 and the pressing rib 121.

[0085] Furthermore, the length of the wire pressing wall 1211 in the axial direction of the bottom cover 12 is greater than the length of the second buckling edge 122 in the axial direction of the bottom cover 12, that is, the height of the wire pressing wall 1211 is greater than the height of the second buckling edge 122. When the bottom cover 12 is buckled with the base, the second buckling edge 122 is correspondingly buckled in the first buckling edge 112, and the pressing rib 121 is correspondingly buckled in the limiting rib 111. The wire entry hole 110 is directly opposite to the avoidance opening 1220. The power cord enters the limiting space 1110 through the wire entry hole 110 and the avoidance opening 1220 in turn, and is led out through the wire outlet hole 1111. The wire pressing wall 1211 extends into the limiting space 1110 to press the power cord into an S-shaped route.

[0086] In some embodiments, the pressing rib 121 further includes two connecting side walls 1212, and the two connecting side walls 1212 are connected between both sides of the wire pressing wall 1211 and the second fastening edge 122; setting the outer diameter of the power cord as D and the distance between the two connecting side walls 1212 as d, wherein 1.3D ≥ d ≥ D.

[0087] In the above embodiments, by designing the distance between the two connecting side walls 1212 and the width of the power cord to adopt a dimension range of 1.3D ≥ d ≥ D, the width between the two connecting side walls 1212 is close to the width of the power cord, so that the moving space of the power cord in the left - right direction can be restricted, and the power cord cannot have a large moving space within the pressing rib, thus the moving space is initially restricted and further restricted at the limiting space 1110 and the wire outlet hole 1111.

[0088] Specifically, as Figure 4 shown, the two connecting side walls 1212 are located on both sides of the avoidance opening 1220, and the two connecting side walls 1212 are parallel. The edge of the connecting side wall 1212 away from the bottom cover 12 is an inclined hypotenuse 12120, and the design of this hypotenuse 12120 can guide the power cord to have a tendency to route towards the wire outlet hole 1111.

[0089] In some embodiments, the shape of the pressing rib 121 matches the shape of the limiting rib 111 and its size is smaller than that of the limiting rib 111; when the bottom cover 12 is fastened to the chassis 11, the pressing rib 121 is correspondingly fastened into the limiting rib 111.

[0090] In the above embodiments, the shape of the pressing rib 121 is consistent with the shape of the limiting rib 111, and the size of the pressing rib 121 is smaller than the size of the limiting rib 111. When the bottom cover 12 is fastened to the chassis 11, the pressing rib 121 is correspondingly fastened into the limiting rib 111, so that a three - dimensional limiting space 1110 can be formed. By adopting the above - mentioned design of surrounding ribs and three - dimensional limiting cavities, the possibility of the power cord being pushed in all directions is completely eliminated, and the movement allowance of the power cord can be controlled within the range of ±0.5 mm, ensuring the structural stability and reliability.

[0091] Specifically, in this embodiment, both the pressing rib 121 and the limiting rib 111 are surrounding ribs and are in a U - shape or a C - shape. The size of the pressing rib 121 is smaller than the size of the limiting rib 111. As Figures 4 to 6 shown, the length of the connecting side wall 1212 is smaller than the length of the second limiting side wall of the limiting rib 111, and the length of the wire pressing wall 1211 is smaller than the length of the first limiting side wall of the limiting rib 111.

[0092] Furthermore, the length of the connecting side wall 1212 is greater than the gap distance between the second limiting side wall of the limiting rib 111 and the second buckling edge 122. This design prevents the power cord from slipping out of the gap between the second limiting side wall and the second buckling edge 122.

[0093] In some embodiments, a first reinforcing rib 113 is provided between the limiting rib 111 and the chassis 11 .

[0094] In the above embodiment, the first reinforcing rib 113 is provided to increase the structural strength of the limiting rib 111, thereby preventing the limiting rib 111 from being insufficiently strong when the power cord is pulled or pushed, thereby preventing the problem of breakage or deformation.

[0095] Preferably, there are multiple first reinforcing ribs 113 , and the multiple first reinforcing ribs 113 are arranged at intervals along the circumference of the limiting rib 111 , which can further increase the structural strength of the limiting rib 111 .

[0096] More preferably, the first reinforcing rib 113 is disposed on the outer peripheral side of the limiting rib 111 to prevent the first reinforcing rib 113 from interfering with the power line and affecting the routing of the power line when disposed inside the limiting rib 111 .

[0097] In some embodiments, a second reinforcing rib 123 is provided between the pressed rib 121 and the bottom cover 12 .

[0098] In the above embodiment, the second reinforcing ribs 123 are provided to increase the structural strength of the compression ribs 121, thereby preventing the compression ribs 121 from being insufficiently strong when the power cord is pulled or pushed, thereby preventing the power cord from breaking or deforming.

[0099] Preferably, the second reinforcing rib 123 is arranged inside the pressed rib 121 and is in the shape of a right triangle. One right-angled side of the second reinforcing rib 123 is connected to the middle position of the inner wall of the pressing wall 1211, and the other right-angled side is connected to the bottom cover 12.

[0100] The assembly process of the bottom cover 12, the chassis 11 and the power cord in this embodiment is as follows:

[0101] (1) Pre-positioning: Place the power cord into the wire clamping groove of the limiting reinforcement 111 and use the first guide surface 1112 to easily slide it into position.

[0102] (2) Buckling: Buckle the bottom cover 12 and the chassis 11, and interlock the limiting ribs 111 and the pressing ribs 121 to form a three-dimensional limiting cavity, so as to control the movable margin of the power cord within the range of ±0.5mm.

[0103] (3) Fixation: No additional screws are required, and the movement of the power cord is directly restricted by the bite of the ribs, reducing assembly costs and working hours.

[0104] This embodiment provides an efficient and reliable anti-pushing structure for the power cord of an electric fan. The core design is that the chassis 11 and the bottom cover 12 are synchronously provided with surrounding ribs to form a three-dimensional enclosure. The limiting ribs 111 of the chassis 11 are integrated with wire clamping grooves to achieve pre-positioning for assembly. The limiting ribs 111 on the chassis 11 and the pressed ribs 121 on the bottom cover 12 are buckled together to form a three-dimensional limiting cavity. Compared with existing power cord installation structures, it has the following advantages:

[0105] (1) Structural innovation: Through laboratory thrust testing, this application can meet the power cord push-in test requirements through the structural design of surrounding ribs and three-dimensional limiting cavities, completely eliminating the possibility of the power cord being pushed in in all directions.

[0106] (2) Assembly optimization: Compared with the traditional solution that requires two screws, the number of screws is reduced, saving assembly costs and labor hours.

[0107] (3) Performance improvement: The three-dimensional limiting cavity controls the power cord's movable margin to ±0.5mm, ensuring structural stability and reliability.

[0108] According to another aspect of an embodiment of the present invention, a fan is provided, comprising the fan base 10 according to any one of the above embodiments.

[0109] Further, if Figure 7 As shown, the fan further includes a head (not shown in the figure) and a support column 20 connected between the fan base 10 and the head.

[0110] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations shall fall within the scope of protection of the embodiments of the present application.

Claims

1. A fan base, characterized in that: include: The chassis (11) is provided with a wire entry hole (110) on the side; A bottom cover (12) is buckled onto the chassis (11); A power line limiting structure comprises a limiting rib (111) provided on the chassis (11), wherein the limiting rib (111) is provided with a wire outlet hole (1111), and the limiting rib (111) encloses a limiting space (1110) for accommodating and limiting the power line; The power cord limiting structure further comprises a pressing rib (121) provided on the bottom cover (12) corresponding to the limiting rib (111); when the bottom cover (12) is buckled with the chassis (11), the pressing rib (121) bends the power cord and presses it into the limiting space (1110), and can constrain the power cord in the direction of the line connecting the wire inlet hole (110) and the wire outlet hole (1111).

2. The fan base according to claim 1, characterized in that: The fan base (10) is in an assembled state in which the bottom cover (12) is buckled onto the chassis (11); When the fan base (10) is in the assembled state, the pressing point of the pressing rib (121) on the power cord is located below the line connecting the wire inlet hole (110) and the wire outlet hole (1111), so as to limit the displacement of the power cord in the direction of the line connecting the wire inlet hole (110) and the wire outlet hole (1111).

3. The fan base according to claim 1, wherein: The wire outlet hole (1111) is a wire clamping groove provided on the edge of the limiting rib (111), and the wire clamping groove is interference-fitted with the power cord.

4. The fan base according to claim 3, characterized in that: The outer diameter of the power cord is D; The width of the wire clamping groove is W, and 0.7D≤W≤0.95D; and / or the depth of the wire clamping groove is D1, and 1.2D≤D1≤2D.

5. The fan base according to claim 3, characterized in that: At least part of the two opposite side walls of the clamping groove are constructed as inclined first guide surfaces (1112).

6. The fan base according to any one of claims 1 to 5, characterized in that: The outer periphery of the chassis (11) is provided with a first buckling edge (112), the wire inlet hole (110) is opened on the first buckling edge (112), and the wire outlet hole (1111) is arranged opposite to the wire inlet hole (110); The limiting rib (111) is U-shaped, the opening side of the U-shaped limiting rib (111) faces the wire entry hole (110), and an assembly gap for the bottom cover (12) to be fastened and installed is reserved between the opening end and the first fastening edge (112).

7. The fan base according to any one of claims 1 to 5, characterized in that: The bottom cover (12) is provided with a second buckling edge (122), and the second buckling edge (122) is provided with a avoidance opening (1220) corresponding to the wire inlet hole (110); The pressing rib (121) is connected around the avoidance opening (1220), and the pressing rib (121) includes a pressing wall (1211), and the height of the pressing wall (1211) is greater than the height of the second buckling edge (122).

8. The fan base according to claim 7, characterized in that: The pressed reinforcement (121) further comprises: Two connecting side walls (1212), the two connecting side walls (1212) are connected between the two sides of the pressing wall (1211) and the second buckling edge (122); Assuming the outer diameter of the power line is D, the distance between the two connecting side walls (1212) is d, wherein 1.3D≥d≥D.

9. The fan base according to any one of claims 1 to 5, characterized in that: The shape of the pressed rib (121) matches the shape of the limiting rib (111) and the size is smaller than the limiting rib (111); When the bottom cover (12) is buckled with the chassis (11), the pressing ribs (121) are correspondingly buckled into the limiting ribs (111).

10. The fan base according to any one of claims 1 to 5, characterized in that: A first reinforcing rib (113) is provided between the limiting rib (111) and the chassis (11); And / or, a second reinforcing rib (123) is provided between the pressed rib (121) and the bottom cover (12).

11. A fan, characterized in that: The fan base (10) comprises any one of claims 1 to 10.

Images