Combinable protective mesh enclosure of fan

Abstract

The invention discloses a combinable protective mesh enclosure of a fan. The combinable protective mesh enclosure comprises a central mesh enclosure, the mesh enclosure comprises an annular mesh enclosure and a central mesh enclosure, and the annular mesh enclosure comprises a plurality of concentric circular metal wires and radial metal wires fixedly welded to the circular metal wires. A hollow hole is formed in the centroid of the annular mesh enclosure, and the radial metal wires on the annular mesh enclosure are respectively provided with an inner extension section extending inwards in the radial direction and an outer extension section extending outwards in the radial direction on the inner ring and the outer ring of the annular mesh enclosure; the hollow holes of the annular mesh enclosure are used for accommodating the inner adjacent annular mesh enclosure or the central mesh enclosure; the radial metal wires of the adjacent annular mesh enclosures are provided with parallel attaching positions, and the parallel attaching positions are mutually clamped or welded. The clamping piece provides clamping connection, and the clamping connection is further provided with an inserting tongue capable of closing an opening of the clamping groove after falling down due to hot iron. The protective net cover can be freely combined, clamped or welded from inside to outside, so that complete protective net covers with different sizes are formed, the degree of freedom is high, the structural strength is good, and on-site batch production is facilitated.

Description

Technical Field

[0001] The invention relates to the field of fan components, and in particular to a combinable protective net cover of a fan. Background Art

[0002] The protective mesh cover of the heat sink fan is an indispensable part of the heat sink fan. The protective mesh cover mainly prevents foreign objects from colliding with the fan blades of the heat sink fan. It avoids damage to the fan blades and prevents people from being scratched by the fan blades. Traditional protective mesh covers are generally welded from many thin iron wires to form a spider web-like pattern. Different heat sink fans have a large span of diameters. If welding tooling is designed for each protective mesh cover of different sizes, the equipment cost will be high. It is necessary to change the design of the protective mesh cover to simplify the difficulty and cost of the manufacturing stage. Summary of the invention

[0003] The problem to be solved by the present invention is to provide a combinable protective mesh cover for a fan, which can be freely assembled, snap-fitted or welded from the inside to the outside, so as to form complete protective mesh covers of different sizes, with high degree of freedom, and is also conducive to on-site batch production.

[0004] In order to solve the above problems, the present invention provides a combinable protective mesh cover for a fan. To achieve the above purpose, the technical solution adopted by the present invention to solve the technical problem is:

[0005] A combinable protective mesh cover for a fan comprises: a central mesh cover; an annular mesh cover, wherein the central mesh cover and the annular mesh cover comprise a plurality of concentric circular ring metal wires, and further comprise radial metal wires welded and fixed to the circular ring metal wires; a hollow hole is provided at the centroid of the annular mesh cover, and the radial metal wires on the annular mesh cover respectively comprise inner extension sections extending radially inward and outer extension sections extending radially outward at the inner and outer rings of the annular mesh cover; a clamping piece, wherein mutually parallel clamping grooves are recessed on the same surface, and an outwardly convex plugging tongue is formed at the junction of adjacent clamping grooves, and the plugging tongue can be softened after hot stamping The top of the inserted tongue after lodging can be bonded and fixed to the other side of the opening edge of the adjacent slot; the inserted tongue is provided with a plurality of notches for interrupting the inserted tongue; wherein the slot can accommodate the inner extension section or the outer extension section, and the notch can allow the circular metal wire to pass through; the hollow hole of the annular mesh cover is used to accommodate the adjacent annular mesh cover or the central mesh cover inside; the radial metal wires of the adjacent annular mesh covers have parallel fitting parts, and the parallel fitting parts are mutually clamped or welded; the number of radial metal wires of the annular mesh cover is not less than the number of radial metal wires of the annular mesh cover at its own hollow hole.

[0006] The beneficial effect of adopting the above technical solution is that a central mesh and one or more annular meshes can be combined into a complete protective mesh. The combination method is from the inside to the outside. In this way, the production batch of the central mesh is the largest, and the application of the larger annular meshes is basically getting smaller and smaller. This makes it convenient for the production line to re-set the clamping or welding tooling and assembly line. The production site can be rearranged, and a large number of central meshes and annular meshes can be mass-produced first, and then spliced, clamped or welded in the final process. The main structure of the annular mesh is similar, so they are collectively referred to as annular meshes. In fact, they are of different sizes and can be arranged concentrically with each other.

[0007] The clamping piece provides clamping for independent mesh covers at different radial positions. First, the clamping slot serves as a preliminary limit for the radial metal wire. Second, the notch serves to avoid the circumferential metal wire. Third, the function of the tongue in the initial state is similar to that of the clamping slot, which serves as an auxiliary positioning effect. The tongue, which is softened and then solidified in the later stage, serves as an auxiliary fixing effect, so that the radial metal wire cannot be loosened from the clamping piece at all. This makes the integrity of the entire combined mesh cover better.

[0008] As a further improvement of the present invention, the top of the insert tongue is provided with a destructible connecting rib, and the connecting rib forms a closed loop hole with the notch.

[0009] The beneficial effect of adopting the above technical solution is that the connecting rib is the appearance of the card as a component product when it is just shipped or sold. The existence of the connecting rib can ensure that the tops of the plug tongues are connected to each other at the beginning, so that the plug tongues have a certain integrity and will not be easily twisted, thereby facilitating the unified vertical insertion of the plug tongues between the inner extension section and the outer extension section.

[0010] As a further improvement of the present invention, the width of the inserting tongue gradually narrows along the protruding direction of the inserting tongue; the number of the notches is not less than two, and the notches break the inserting tongue into a plurality of local inserting tongue segments, and the local inserting tongue segments after hot stamping fall down alternately in opposite directions.

[0011] The beneficial effect of adopting the above technical solution is that the insert tongue is inverted in the limited state, so as to seal the top of the card slot and fully wrap the inner extension section or the outer extension section in the card slot, thereby greatly improving the assembly firmness and preventing the inner extension section, the outer extension section and the card component from loosening.

[0012] As a further improvement of the present invention, both ends of the slot are connected, and the cross-sectional profile of the inner wall of the slot is a major arc.

[0013] The beneficial effect of adopting the above technical solution is that the opening width of the card slot is slightly smaller than the width of its own cavity, and the card slot has a certain card relay force on the inner extension section and the outer extension section.

[0014] The inner extension section and the outer extension section provide a fitting and welding position for the adjacent independent parts, and after welding, they can form an integrated protective mesh. The more radially outward, the more radial metal wires there are, which can ensure the overall structural strength and protection density of the protective mesh, and avoid the protective density and structural strength of the protective mesh becoming smaller and worse as it moves radially outward.

[0015] As a further improvement of the present invention, the radial metal wires on the central mesh cover have outer extension sections extending radially outward at the edge of the central mesh cover, and the centroid of the central mesh cover has metal discs welded to the radial metal wires.

[0016] The beneficial effect of adopting the above technical solution is that the central mesh can also be a complete protective mesh, which is suitable for fans with very small sizes. The edge of the central mesh is convenient for welding with the smallest central mesh.

[0017] As a further improvement of the present invention, the radial metal wires on the central mesh cover and the annular mesh cover are arranged along an annular array, and the number of radial metal wires of the annular mesh cover is twice the number of radial metal wires of the annular mesh cover at the hollow holes thereof.

[0018] The beneficial effect of adopting the above technical solution is: ensuring that the outer extension section of the annular mesh cover can be welded, ensuring the firmness of the whole after welding.

[0019] As a further improvement of the present invention, the spacing between the circular metal wires in the central mesh cover and the annular mesh cover is equal, annular gaps are formed between adjacent circular metal wires, and the number of circular metal wires in each annular mesh cover is equal.

[0020] The beneficial effects of adopting the above technical solution are: the annular gaps are equal, ensuring the uniformity of the overall appearance and protection density. The radial widths of the annular meshes are equal, so that the outer diameter of the combined protection mesh is enlarged by a certain level.

[0021] As a further improvement of the present invention, the lengths of the inner extension section and the outer extension section are equal, and the length of a single inner extension section is greater than the width of a single annular gap.

[0022] The beneficial effect of adopting the above technical solution is that the weld between the inner extension section and the outer extension section is long enough to ensure that the radial metal wire is overall straight after welding.

[0023] As a further improvement of the present invention, the radial metal wires are all welded to the same axial end face of the circular metal wire; the circular metal wire and the radial metal wire have the same thickness, and the outer diameter of the radial metal wire is less than 3 mm.

[0024] The beneficial effect of adopting the above technical solution is that the circular metal wire and the radial metal wire can be bent and cut from metal wires of the same specifications, and the overall thickness of the metal wire is relatively thin, making it easy to shape the inner extension section and the outer extension section, and to facilitate the parallel fitting of the inner extension section and the outer extension section.

[0025] As a further improvement of the present invention, the outer extension section forms a hook-shaped piece for the screw to pass through after being bent.

[0026] The beneficial effect of adopting the above technical solution is that when welding with other connections is not required, the outer extension section can be shaped, and the shaped hook-shaped piece is equivalent to a fixing hole and can be assembled and fixed with a screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a front view of an annular mesh cover according to an embodiment of the present invention;

[0029] Figure 2 is an exploded view of an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the application of a central grille according to an embodiment of the present invention;

[0031] Figure 4 is a perspective view of an embodiment of the present invention;

[0032] Figure 5 It is a partial enlarged view of point A of one embodiment of the present invention;

[0033] Figure 6 is a three-dimensional diagram of a card according to an embodiment of the present invention;

[0034] Figure 7 is an application schematic diagram of a card according to an embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the application of a card component according to an embodiment of the present invention.

[0036] 1-center mesh cover; 2-annular mesh cover; 3-hollow hole; 4-circular metal wire; 5-radial metal wire; 6-inner extension section; 7-outer extension section; 8-hook-shaped piece; 9-metal disc; 10-weld; 11-annular gap; 12-clamp; 121-cage; 122-notch; 123-tongue; 124-connecting rib. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with specific embodiments:

[0038] In order to achieve the purpose of the present invention, a combinable protective mesh cover for a fan includes: a central mesh cover 1; an annular mesh cover 2, wherein the central mesh cover 1 and the annular mesh cover 2 include a plurality of concentric circular ring metal wires 4, and also include radial metal wires 5 welded and fixed to the circular ring metal wires 4; a hollow hole 3 is provided at the centroid of the annular mesh cover 2, and the radial metal wires 5 on the annular mesh cover 2 are respectively provided with inner extension sections 6 extending radially inward and outer extension sections 7 extending radially outward at the inner and outer rings of the annular mesh cover 2; a clamp 12, wherein mutually parallel clamping grooves 121 are recessed on the same surface, and a protruding plug tongue 123 is formed at the junction of adjacent clamping grooves 121, and the plug tongue 123 can be hot-stamped After softening and lodging, the top of the lodging tongue 123 can be bonded and fixed to the other side of the opening edge of the adjacent slot 121; the tongue 123 is provided with a plurality of notches 122 interrupting the tongue 123; wherein the slot 121 can accommodate the inner extension section 6 or the outer extension section 7, and the notch 122 can allow the circular metal wire 4 to pass through; the hollow hole 3 of the annular mesh cover 2 is used to accommodate the adjacent annular mesh cover 2 or the central mesh cover 1 inside; the radial metal wires 5 of the adjacent annular mesh covers 2 have parallel fitting parts, and the parallel fitting parts are mutually clamped or welded; the number of radial metal wires 5 of the annular mesh cover 2 is not less than the number of radial metal wires 5 of the annular mesh cover 2 at its own hollow hole 3.

[0039] Figure 8 compared to Figure 7 , Figure 8 The inserting tongue 123 is inverted, and the inverting of the inserting tongue 123 can be achieved by heat-scalding to make it soft and inverted, and then naturally cooling and solidifying, so as to seal the open top of the slot 121 and realize the embracing and fixing of the inner extension section 6 or the outer extension section 7.

[0040] In addition, the card is made of plastic.

[0041] The beneficial effect of adopting the above technical solution is that a central mesh cover and one or more annular mesh covers can be combined into a complete protective mesh cover. The combination method is from the inside to the outside. In this way, the production batch of the central mesh cover is the largest, and the application amount of the larger annular mesh covers is basically getting smaller and smaller. This makes it convenient for the production line to re-set welding tooling and assembly lines. The production site can be rearranged, and a large number of central mesh covers and annular mesh covers can be mass-produced first, and then spliced ​​and welded in the final process. The main structure of the annular mesh covers is similar, so they are collectively referred to as annular mesh covers. In fact, they are of different sizes and can be arranged concentrically with each other. The inner extension section and the outer extension section provide adjacent independent components with a fitting, clamping or welding position, which can form an integrated protective mesh cover after clamping or welding. The more radially outward, the more radial metal wires there are, which can ensure the overall structural strength and protection density of the protective mesh cover, and avoid the protective density of the protective mesh cover being smaller and the structural strength being worse as it moves radially outward.

[0042] The clamping piece provides clamping for independent mesh covers at different radial positions. First, the clamping slot serves as a preliminary limit for the radial metal wire. Second, the notch serves to avoid the circumferential metal wire. Third, the function of the tongue in the initial state is similar to that of the clamping slot, which serves as an auxiliary positioning effect. The tongue, which is softened and then solidified in the later stage, serves as an auxiliary fixing effect, so that the radial metal wire cannot be loosened from the clamping piece at all. This makes the integrity of the entire combined mesh cover better.

[0043] like Figure 6 As shown, in some other embodiments of the present invention, the top of the insert tongue 123 is provided with a destructible connecting rib 124, and the connecting rib 124 forms a closed loop hole with the gap.

[0044] The thickness of the connecting rib 124 does not exceed 0.5 mm. The connecting rib 124 can be understood as a plastic wire. When the clamp 12 is assembled, as the clamp 12 moves, the inner extension section and the outer extension section will touch the connecting rib 124. The structural strength of the connecting rib 124 is weak and it will be broken naturally, which will not affect the entire clamping process.

[0045] The beneficial effect of adopting the above technical solution is that the connecting rib is the appearance of the card as a component product when it is just shipped or sold. The existence of the connecting rib can ensure that the tops of the plug tongues are connected to each other at the beginning, so that the plug tongues have a certain integrity and will not be easily twisted, thereby facilitating the unified vertical insertion of the plug tongues between the inner extension section and the outer extension section.

[0046] like Figure 8 As shown, in other embodiments of the present invention, the width of the tongue 123 gradually narrows along the protruding direction of the tongue 123; the number of the notches 122 is not less than two, and the notches 122 divide the tongue 123 into a plurality of local tongue segments, and the local tongue segments after hot stamping fall down alternately in opposite directions.

[0047] The beneficial effect of adopting the above technical solution is that the insert tongue is inverted in the limited state, so as to seal the top of the card slot and fully wrap the inner extension section or the outer extension section in the card slot, thereby greatly improving the assembly firmness and preventing the inner extension section, the outer extension section and the card component from loosening.

[0048] like Figure 8 As shown, in some other embodiments of the present invention, both ends of the slot 121 are connected, and the cross-sectional profile of the inner wall of the slot 121 is a major arc.

[0049] The beneficial effect of adopting the above technical solution is that the opening width of the card slot is slightly smaller than the width of its own cavity, and the card slot has a certain card relay force on the inner extension section and the outer extension section.

[0050] In other embodiments of the present invention, the radial wires 5 on the central mesh cover 1 have outer extension sections 7 extending radially outward at the edge of the central mesh cover 1 , and the centroid of the central mesh cover 1 has metal discs 9 welded to the radial wires 5 .

[0051] The beneficial effect of adopting the above technical solution is that the central mesh can also be a complete protective mesh, which is suitable for fans with very small sizes. The edge of the central mesh is convenient for welding with the smallest central mesh.

[0052] In other embodiments of the present invention, the radial wires 5 on the central mesh 1 and the annular mesh 2 are arranged along an annular array, and the number of radial wires 5 of the annular mesh 2 is twice the number of radial wires 4 of the annular mesh 2 at its own hollow holes 3 .

[0053] The beneficial effect of adopting the above technical solution is: ensuring that the outer extension section of the annular mesh cover can be welded, ensuring the firmness of the whole after welding.

[0054] In other embodiments of the present invention, the spacing between the circular metal wires 4 in the central mesh cover 1 and the annular mesh cover 2 is equal, annular gaps 11 are formed between adjacent circular metal wires 4, and the number of circular metal wires 4 in each annular mesh cover 2 is equal.

[0055] The beneficial effects of adopting the above technical solution are: the annular gaps are equal, ensuring the uniformity of the overall appearance and protection density. The radial widths of the annular meshes are equal, so that the outer diameter of the combined protection mesh is enlarged by a certain level.

[0056] In some other embodiments of the present invention, the lengths of the inner extension section 6 and the outer extension section 7 are equal, and the length of a single inner extension section 6 is greater than the width of a single annular gap 11 .

[0057] The beneficial effect of adopting the above technical solution is that the weld between the inner extension section and the outer extension section is long enough to ensure that the radial metal wire is overall straight after welding.

[0058] In other embodiments of the present invention, the radial metal wires 5 are welded to the same axial end surface of the circular metal wire 4; the circular metal wire 4 and the radial metal wire 5 have the same thickness, and the outer diameter of the radial metal wire 5 is less than 3 mm.

[0059] The beneficial effect of adopting the above technical solution is that the circular metal wire and the radial metal wire can be bent and cut from metal wires of the same specifications, and the overall thickness of the metal wire is relatively thin, making it easy to shape the inner extension section and the outer extension section, and to facilitate the parallel fitting of the inner extension section and the outer extension section.

[0060] In other embodiments of the present invention, the outer extension section 7 forms a hook-shaped piece 8 for the screw to pass through after being bent.

[0061] The beneficial effect of adopting the above technical solution is that when welding with other connections is not required, the outer extension section can be shaped, and the shaped hook-shaped piece is equivalent to a fixing hole and can be assembled and fixed with a screw.

[0062] Among any two adjacent annular meshes 2, there is one annular mesh 2 whose radial wires 5 have center lines that pass through the centroid of the annular mesh 2 itself, and there is also one annular mesh 2 whose radial wires 5 have center lines that do not coincide with the same spatial point.

[0063] Figure 2 The example in FIG. 1 shows a central grille 1 and two annular grilles 2 .

[0064] Figure 3 yes Figure 2 The effect of the central mesh cover 1 after being bent at the outer extension section 7.

[0065] Figure 4 yes Figure 2 The shape after the central mesh cover 1 and the two annular mesh covers 2 are combined and welded. Figure 5 The weld 10 formed by welding the inner extension section 6 and the outer extension section 7 can be seen in the figure. The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A combinable protective screen for a fan, characterized in that: include: Center grille; The annular mesh cover comprises a plurality of concentric circular metal wires and radial metal wires fixedly welded to the circular metal wires; the centroid of the annular mesh cover is provided with a hollow hole, and the radial metal wires on the annular mesh cover are provided with inner extension sections extending radially inward and outer extension sections extending radially outward at the inner and outer circles of the annular mesh cover respectively; The card piece has mutually parallel card slots recessed on the same surface, and a protruding plug tongue is formed at the junction of adjacent card slots. The plug tongue can be softened and fall down after hot ironing, and the top of the fallen plug tongue can be bonded and fixed to the other side of the opening edge of the adjacent card slot; the plug tongue is provided with a plurality of notches that interrupt the plug tongue; Wherein, the slot can accommodate the inner extension section or the outer extension section, and the notch can allow the circular metal wire to pass through; The hollow holes of the annular mesh cover are used to accommodate adjacent annular mesh covers or central mesh covers inside; the radial metal wires of adjacent annular mesh covers have parallel fitting parts, and the parallel fitting parts are mutually clamped or welded; the number of radial metal wires of the annular mesh cover is not less than the number of radial metal wires of the annular mesh cover at its own hollow holes.

2. The combinable protective screen cover for a fan according to claim 1 is characterized in that: The top of the inserting tongue is provided with a destructible connecting rib, and the connecting rib forms a closed loop hole with the notch.

3. The combinable protective screen cover for a fan according to claim 1 is characterized in that: Along the protruding direction of the inserting tongue, the width of the inserting tongue gradually narrows; The number of the notches is not less than two, and the notches divide the inserting tongue into a plurality of local inserting tongue segments, and the local inserting tongue segments after hot stamping fall down alternately in opposite directions.

4. The combinable protective screen cover for a fan according to claim 1 is characterized in that: Both ends of the slot are connected, and the cross-sectional profile of the inner wall of the slot is a major arc.

5. The combinable protective screen cover for a fan according to claim 1 is characterized in that: The radial metal wires on the central mesh cover are provided with outer extension sections extending radially outward at the edge of the central mesh cover, and the centroid of the central mesh cover is provided with metal discs welded to the radial metal wires.

6. The combinable protective screen cover for the fan according to claim 5 is characterized in that: The radial metal wires on the central mesh cover and the annular mesh cover are arranged along an annular array, and the number of radial metal wires of the annular mesh cover is twice the number of radial metal wires of the annular mesh cover at the hollow hole thereof.

7. The combinable protective screen cover for a fan according to claim 5 is characterized in that: The spacing between the circular metal wires in the central mesh cover and the annular mesh cover is equal, annular gaps are formed between adjacent circular metal wires, and the number of circular metal wires in each annular mesh cover is equal.

8. The combinable protective screen cover for a fan according to claim 7 is characterized in that: The inner extension section is equal to the outer extension section in length, and the length of a single inner extension section is greater than the width of a single annular gap.

9. The combinable protective screen cover for a fan according to claim 5, characterized in that: The radial metal wires are all welded to the same axial end face of the circular metal wire; the circular metal wire and the radial metal wire have the same thickness, and the outer diameter of the radial metal wire is less than 3 mm.

10. The combinable protective screen cover for a fan according to claim 5, characterized in that: The outer extension section, after being bent, forms a hook-shaped piece for the screw to pass through.

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